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Tytuł:
Simultaneity Analysis In A Wireless Sensor Network
Autorzy:
Malović, M.
Brajović, L.
Mišković, Z.
Šekara, T.
Powiązania:
https://bibliotekanauki.pl/articles/220479.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
time
frequency
simultaneity
synchronization
temperature
wireless sensor networks
Opis:
An original wireless sensor network for vibration measurements was designed. Its primary purpose is modal analysis of vibrations of large structures. A number of experiments have been performed to evaluate the system, with special emphasis on the influence of different effects on simultaneity of data acquired from remote nodes, which is essential for modal analysis. One of the issues is that quartz crystal oscillators, which provide time reading on the devices, are optimized for use in the room temperature and exhibit significant frequency variations if operated outside the 20–30°C range. Although much research was performed to optimize algorithms of synchronization in wireless networks, the subject of temperature fluctuations was not investigated and discussed in proportion to its significance. This paper describes methods used to evaluate data simultaneity and some algorithms suitable for its improvement in small to intermediate size ad-hoc wireless sensor networks exposed to varying temperatures often present in on-site civil engineering measurements.
Źródło:
Metrology and Measurement Systems; 2015, 22, 2; 275-288
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization schemes for wireless sensor network localization
Autorzy:
Niewiadomska-Szynkiewicz, E.
Marks, M.
Powiązania:
https://bibliotekanauki.pl/articles/907665.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
sieć bezprzewodowa
sieć sensorowa
lokalizacja
optymalizacja stochastyczna
wyżarzanie symulowane
wireless sensor networks
localization
stochastic optimization
simulated annealing
Opis:
Many applications of wireless sensor networks (WSN) require information about the geographical location of each sensor node. Self-organization and localization capabilities are one of the most important requirements in sensor networks. This paper provides an overview of centralized distance-based algorithms for estimating the positions of nodes in a sensor network. We discuss and compare three approaches: semidefinite programming, simulated annealing and two-phase stochastic optimization-a hybrid scheme that we have proposed. We analyze the properties of all listed methods and report the results of numerical tests. Particular attention is paid to our technique-the two-phase method-that uses a combination of trilateration, and stochastic optimization for performing sensor localization. We describe its performance in the case of centralized and distributed implementations.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2009, 19, 2; 291-302
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling and optimization of the force sensor network
Autorzy:
Bialic, G.
Zmarzły, M.
Stanisławski, R.
Powiązania:
https://bibliotekanauki.pl/articles/384391.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
sensor network optimization
mathematical modeling
Opis:
The power boiler erection process requires temporary suspending of buckstays (Fig. 1). The aim of buckstays installation is to brace screens of combustion chamber. Suspending of buckstays is performed by means of strand jacks and steel rods. The amount, location and force ranges of each rods are modelled on the basis of static structural strength computations. In the paper the force sensor network incorporated into computer and wireless communication system designed to prevent overloading of the rods resulting from force asymmetry or computational faults is introduced and next subjected to optimization procedure. The operational data delivered by the network and recorded on the system hard drives let the authors perform the correlation analysis and linear regression to reduce the number of sensors. Thus two stage hierarchic algorithm which constructs the set of models for every single sensor and estimates their parameters, and then using genetic procedure minimizes a certain loss function to automate the sensor network optimization process is introduced. As a result, such investigation could significantly reduce cost of the whole system.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2010, 4, 3; 55-59
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Erlang-based sensor network management for heterogeneous devices
Autorzy:
Nieć, M.
Pikuła, P.
Mamla, A.
Turek, W.
Powiązania:
https://bibliotekanauki.pl/articles/305475.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Erlang
mobile devices
sensor networks
Opis:
The paper describes a system designed to manage and collect data from the network of heterogeneous sensors. It was implemented using Erlang OTP and CouchDB for maximum fault tolerance, scalability and ease of deployment. It is resistant to poor network quality, shows high tolerance for software errors and power failures, operates on flexible data model. Additionally, it is available to users through an Web application, which shows just how easy it is to use the server HTTP API to communicate with it. The whole platform was implemented and tested on variety of devices like PC, Mac, ARM-based embedded devices and Android tablets.
Źródło:
Computer Science; 2012, 13 (3); 139-151
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metoda zrównoważonego zużycia energii w bezprzewodowej sieci pomiarowejEnergy balanced method in wireless sensor network
Energy balanced method in wireless sensor network
Autorzy:
Boniewicz, M.
Zieliński, M.
Powiązania:
https://bibliotekanauki.pl/articles/152358.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
bezprzewodowa sieć pomiarowa
równomierne zużycie energii
algorytmy trasowania
wireless sensor network
balanced energy consumption
routing algorithms
Opis:
W artykule przedstawiono metodę zrównoważenia zużycia energii w bezprzewodowej sieci pomiarowej. W przypadku rozwiązań bezprzewodowych istotnymi aspektami są zużycie energii oraz zrównoważenie zużycia energii. Opisano metody i wyniki symulacji pracy sieci przy klasycznym rozwiązaniu oraz przy zastosowaniu opracowanej metody. Wykazano czterokrotne zmniejszenie rozrzutu energii w sieci przy niewielkim wzroście łącznego zużycia energii. Opracowane rozwiązanie jest testowane na prototypowej sieci pomiarowej.
In this paper there is described the routing algorithm for wireless sensor networks. Energy consumption is very important for self-powered radio nodes. But in some applications energy balancing is more important. Wireless sensor networks used in large areas like farmlands or warehouses consist of hundreds of nodes. In classic methods routing is directed to short time of transmission or low energy consumption. But unbalanced energy consumption can often cause unpredictable failures because of lack of energy in frequently used nodes. Energy balancing prevents this behavior by dynamic bypassing the used nodes. The paper presents five methods for reducing energy consumption and a new method for energy balanced routing. The advantages and disadvantages of the methods are de-scribed. Fig. 1 shows the algorithm diagram. The performed simulations show almost four times smaller energy consumption deviation than the deviation in classic routing method. The energy balancing can be improved by changing the sequence of transmis-sion.
Źródło:
Pomiary Automatyka Kontrola; 2013, R. 59, nr 5, 5; 434-436
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensor network scheduling for identification of spatially distributed processes
Autorzy:
Uciński, D.
Powiązania:
https://bibliotekanauki.pl/articles/331382.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
sieć sensorowa
estymacja parametrów
układ o parametrach rozłożonych
macierz informacyjna Fishera
sensor network
parameter estimation
distributed parameter system
optimum experimental design
Fisher information matrix
Opis:
The work treats the problem of fault detection for processes described by partial differential equations as that of maximizing the power of a parametric hypothesis test which checks whether or not system parameters have nominal values. A simple node activation strategy is discussed for the design of a sensor network deployed in a spatial domain that is supposed to be used while detecting changes in the underlying parameters which govern the process evolution. The setting considered relates to a situation where from among a finite set of potential sensor locations only a subset of them can be selected because of the cost constraints. As a suitable performance measure, the Ds-optimality criterion defined on the Fisher information matrix for the estimated parameters is applied. The problem is then formulated as the determination of the density of gauged sites so as to maximize the adopted design criterion, subject to inequality constraints incorporating a maximum allowable sensor density in a given spatial domain. The search for the optimal solution is performed using a simplicial decomposition algorithm. The use of the proposed approach is illustrated by a numerical example involving sensor selection for a two-dimensional diffusion process.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2012, 22, 1; 25-40
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensor network infrastructure for intelligent building monitoring and management system
Autorzy:
Dymora, P.
Mazurek, M.
Nieroda, S.
Powiązania:
https://bibliotekanauki.pl/articles/106254.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
sensor network
infrastructure
intelligent building management
Opis:
The aim of this study was to present that it is possible to design and implement an efficient and functional intelligent building management system based on free tools, own project and self-realization of sensor network system which may be a low cost alternative to commercial ones. The paper presents the designed system consisting of implemented devices on the basis of sensor network technology and own hardware project in a building management system. At the application level there was designed and implemented the building management system which allows communication between the sensors, data exchange between the sensors and the database as well as the system parameters visualization panel used for intelligent building monitoring.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica; 2012, 12, 2; 59-71
1732-1360
2083-3628
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficient Wireless Sensor Network for Radiation Detection in Nuclear Sites
Autorzy:
Hashima, Sherief
Mahmoud, Imbab
Powiązania:
https://bibliotekanauki.pl/articles/1844636.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wireless sensor networks (WSNs)
radiation detection
multi-armed bandit (MAB)
Thomson sampling
network lifetime
Opis:
Due to the severe damages of nuclear accidents, there is still an urgent need to develop efficient radiation detection wireless sensor networks (RDWSNs) that precisely monitor irregular radioactivity. It should take actions that mitigate the severe costs of accidental radiation leakage, especially around nuclear sites that are the primary sources of electric power and many health and industrial applications. Recently, leveraging machine learning (ML) algorithms to RDWSNs is a promising solution due to its several pros, such as online learning and self-decision making. This paper addresses novel and efficient ML-based RDWSNs that utilize millimeter waves (mmWaves) to meet future network requirements. Specifically, we leverage an online learning multi-armed bandit (MAB) algorithm called Thomson sampling (TS) to a 5G enabled RDWSN to efficiently forward the measured radiation levels of the distributed radiation sensors within the monitoring area. The utilized sensor nodes are lightweight smart radiation sensors that are mounted on mobile devices and measure radiation levels using software applications installed in these mobiles. Moreover, a battery aware TS (BATS) algorithm is proposed to efficiently forward the sensed radiation levels to the fusion decision center. BA-TS reflects the remaining battery of each mobile device to prolong the network lifetime. Simulation results ensure the proposed BA-TS algorithm’s efficiency regards throughput and network lifetime over TS and exhaustive search method.
Źródło:
International Journal of Electronics and Telecommunications; 2021, 67, 2; 175-180
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensor network design for the estimation of spatially distributed processes
Autorzy:
Uciński, D.
Patan, M.
Powiązania:
https://bibliotekanauki.pl/articles/929585.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
projekt optymalny
estymacja parametrów
sieć sensorowa
identyfikacja źródłowa
optimal experiment design
parameter estimation
sensor network
source identification
Opis:
In a typical moving contaminating source identification problem, after some type of biological or chemical contamination has occurred, there is a developing cloud of dangerous or toxic material. In order to detect and localize the contamination source, a sensor network can be used. Up to now, however, approaches aiming at guaranteeing a dense region coverage or satisfactory network connectivity have dominated this line of research and abstracted away from the mathematical description of the physical processes underlying the observed phenomena. The present work aims at bridging this gap and meeting the needs created in the context of the source identification problem. We assume that the paths of the moving sources are unknown, but they are sufficiently smooth to be approximated by combinations of given basis functions. This parametrization makes it possible to reduce the source detection and estimation problem to that of parameter identification. In order to estimate the source and medium parameters, the maximum--ikelihood estimator is used. Based on a scalar measure of performance defined on the Fisher information matrix related to the unknown parameters, which is commonly used in optimum experimental design theory, the problem is formulated as an optimal control one. From a practical point of view, it is desirable to have the computations dynamic data driven, i.e., the current measurements from the mobile sensors must serve as a basis for the update of parameter estimates and these, in turn, can be used to correct the sensor movements. In the proposed research, an attempt will also be made at applying a nonlinear model-predictive-control-like approach to attack this issue.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2010, 20, 3; 459-481
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Theoretical Review of Topological Organization for Wireless Sensor Network
Autorzy:
Patil, Sarang Dagajirao
Patil, Pravin Sahebrao
Powiązania:
https://bibliotekanauki.pl/articles/1844489.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
clustering algorithms
DEBC
heterogeneous networks
LEACH
wireless sensor network
Opis:
The recent decades have seen the growth in the fields of wireless communication technologies, which has made it possible to produce components with a rational cost of a few cubic millimeters of volume, called sensors. The collaboration of many of these wireless sensors with a basic base station gives birth to a network of wireless sensors. The latter faces numerous problems related to application requirements and the inadequate abilities of sensor nodes, particularly in terms of energy. In order to integrate the different models describing the characteristics of the nodes of a WSN, this paper presents the topological organization strategies to structure its communication. For large networks, partitioning into sub-networks (clusters) is a technique used to reduce consumption, improve network stability and facilitate scalability.
Źródło:
International Journal of Electronics and Telecommunications; 2021, 67, 3; 507-515
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transmission Protocol Simulation Framework For The Resource-Constrained Wireless Sensor Network
Autorzy:
Wójcikowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/221437.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sensor network
computer simulations
sensor network protocols
Opis:
In this paper a prototype framework for simulation of wireless sensor network and its protocols are presented. The framework simulates operation of a sensor network with data transmission, which enables simultaneous development of the sensor network software, its hardware and the protocols for wireless data transmission. An advantage of using the framework is converging simulation with the real software. Instead of creating a model of the sensor network node, the same software is used in real sensor network nodes and in the simulation framework. Operation of the framework is illustrated with examples of simulations of selected transactions in the sensor network.
Źródło:
Metrology and Measurement Systems; 2015, 22, 2; 221-228
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Developments on an IEEE 802.15.4-based wireless sensor network
Autorzy:
Scheers, B.
Mees, W.
Lauwens, B.
Powiązania:
https://bibliotekanauki.pl/articles/308225.pdf
Data publikacji:
2008
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
wireless sensor networks
IEEE 802.15.4
effective data capacity
positioning
Opis:
In this paper a summary is given of the ongoing research at the Belgian Royal Military Academy in the field of mobile ad hoc networks in general and wireless sensor networks (WSNs) in particular. In this study, all wireless sensor networks are based on the physical and the medium access layer of the IEEE 802.15.4 low rate wireless personal area networks standard. The paper gives a short overview of the IEEE 802.15.4 standard in the beaconless mode together with a description of the sensor nodes and the software used throughout this work. The paper also reports on the development of a packet sniffer for IEEE 802.15.4 integrated in wireshark. This packet sniffer turns out to be indispensable for debugging purposes. In view of future applications on the wireless network, we made a theoretical study of the effective data capacity and compared this with measurements performed on a real sensor network. The differences between measurements and theory are explained. In case of geograph- ically meaningful sensor data, it is important to have a knowledge of the relative position of each node. In the last part of the paper we present some experimental results of positioning based on the received signal strength indicators (RSSI). As one could expect, the accuracy of such a method is poor, even in a well controlled environment. But the method has some potential.
Źródło:
Journal of Telecommunications and Information Technology; 2008, 2; 46-53
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Priority Based Routing for Forest Fire Monitoring in Wireless Sensor Network
Autorzy:
Koga, T.
Toyoda, K.
Sasase, I.
Powiązania:
https://bibliotekanauki.pl/articles/307886.pdf
Data publikacji:
2014
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
event detection
forest fire
priority
routing
wind
Opis:
Recently, forest fire monitoring system in wireless sensor networks has received much attention. The conventional scheme receives fire alert data quickly to inform about fire forest event. However, since two or more nodes may detect a fire, high priority fire detection data frequently collide. In this paper, a new forest fire monitoring system is proposed in order to reduce high priority fire detection data dropped rate, by specifying a high priority received data immediately after fire detection and just before the destruction by fire. Furthermore, the node only transmits high priority data to a node, which has a low possibility of destruction by fire for low end-to-end delay of high priority fire detection data. The simulation results show that proposed scheme can reduce high priority data dropped ratio and the end-to-end delay, and have less effect of wind direction compared with the conventional scheme.
Źródło:
Journal of Telecommunications and Information Technology; 2014, 3; 90-97
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Secure Data Aggregation in Wireless Sensor Network using Chinese Remainder Theorem
Autorzy:
Thomas, Sanu
Mathew, Thomaskutty
Powiązania:
https://bibliotekanauki.pl/articles/2074141.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Chinese remainder theorem
authenticated aggregation
augmented Chinese remainder rystem
TDMA schedule
uplink path
relay node
Opis:
A new method of lossless Secure Data Aggregation for Wireless Sensor Network is presented. Secure Data Aggregation is achieved using the popular Chinese Remainder theorem. Here, an ‘Augmented Chinese Remainder System’ is introduced that incorporates additional features to enforce a higher level of security to the aggregated data. The scheme provides inbuilt signature verification and eliminates the need for separate data validation algorithms. The method achieves data integrity and authentication simultaneously in addition to lossless data aggregation for the data forwarded from the Cluster Head to the Base Station. The aggregate contains the entire individual data from sensors in the encrypted form and the receiver deaggregates it to get the original data in full without any loss. The Augmented Chinese Remainder System can be extended to secure Multi-level Data Aggregation for WSN.
Źródło:
International Journal of Electronics and Telecommunications; 2022, 68, 2; 329--336
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pilot Agent-Driven Wireless Acoustic Sensor Network for Uninterrupted Data Transmission
Autorzy:
Ghosh, Utpal
Mondal, Uttam K.
Powiązania:
https://bibliotekanauki.pl/articles/27312943.pdf
Data publikacji:
2023
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
agent technology
audio signal
multipath routing
partial topology
WASN
Opis:
Wireless acoustic sensor networks (WASN) usually demand uninterrupted and reliable data transmissions and an efficient path from the source nodes to the destination nodes, thus ensuring reliable delivery of sensitive or critical data with the use of multipath routing protocols. This paper presents a novel agent-driven WASN relying on a set of static and mobile agents. In the proposed technique, the location address is functioned into the operating node and the destination node. Calculations of the midpoint between the operating and the destination nodes are followed by identifying the shortest path based on a reference axis, using a mobile agent and a location address. Such an approach aims to ensure maximum utilization of the communicating paths. Based on the information concerning partial topology of the network, the destination node computes the weight factor and multiple paths using node distances, energy ratios and efficiencies of specific links. Then, the destination node selects the appropriate path from the multiple paths available, to transmit the data. This article also analyzes the performance of the proposed system with various parameters taken into consideration and shows its efficiency in comparison to other existing techniques.
Źródło:
Journal of Telecommunications and Information Technology; 2023, 4; 53--60
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Configuring a sensor network for fault detection in distributed parameter systems
Autorzy:
Patan, M.
Uciński, D.
Powiązania:
https://bibliotekanauki.pl/articles/929887.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
metoda podziału i ograniczeń
ograniczony plan eksperymentu
układ o parametrach rozłożonych
detekcja uszkodzeń
estymacja parametryczna
rozmieszczanie czujników
branch-and-bound
constrained experimental design
distributed parameter system
fault detection
parameter estimation
sensor location
Opis:
The problem of fault detection in distributed parameter systems (DPSs) is formulated as that of maximizing the power of a parametric hypothesis test which checks whether or not system parameters have nominal values. A computational scheme is provided for the design of a network of observation locations in a spatial domain that are supposed to be used while detecting changes in the underlying parameters of a distributed parameter system. The setting considered relates to a situation where from among a finite set of potential sensor locations only a subset can be selected because of the cost constraints. As a suitable performance measure, the Ds-optimality criterion defined on the Fisher information matrix for the estimated parameters is applied. Then, the solution of a resulting combinatorial problem is determined based on the branch-and-bound method. As its essential part, a relaxed problem is discussed in which the sensor locations are given a priori and the aim is to determine the associated weights, which quantify the contributions of individual gauged sites. The concavity and differentiability properties of the criterion are established and a gradient projection algorithm is proposed to perform the search for the optimal solution. The delineated approach is illustrated by a numerical example on a sensor network design for a two-dimensional convective diffusion process.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2008, 18, 4; 513-524
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Smart wireless sensor network and configuration of algorithms for condition monitoring applications
Autorzy:
Uhlmann, E.
Laghmouchi, A.
Geisert, C.
Hohwieler, E.
Powiązania:
https://bibliotekanauki.pl/articles/99644.pdf
Data publikacji:
2017
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
condition monitoring
data analysis
sensor network
algorithm
MEMS sensor
cloud
Opis:
Due to high demand on availability of production systems, condition monitoring is increasingly important. In recent years, the technical development have improved for realization of condition monitoring applications as a result of technological progress in fields such as sensor technology, computer performance and communication technology. Especially, the approaches of Industrie 4.0 and the use of the Internet of Things (IoT) technologies offer high potential to implement condition monitoring solutions. The connection of several sensor data of components to the cloud allows the identification of anomalies or defect pattern, this information can be used for predictive maintenance and new data-driven business models in production industry. This paper illustrates a concept of a smart wireless sensor network for condition monitoring application based on simple electronic components such as the single-board computer Raspberry Pi 2 modules and MEMS (Micro-Electro-Mechanical Systems) vibration sensors and communication standards MQTT (Message Queue Telemetry Transport). The communication architecture used for decentralized data analysis using machine learning algorithms and connection to the cloud is explained. Furthermore, a procedure for rapid configuration of condition monitoring algorithms to classify the current condition of the component is demonstrated.
Źródło:
Journal of Machine Engineering; 2017, 17, 2; 45-55
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensor Network Deployment Optimization for Improved Area Coverage Using a Genetic Algorithm
Autorzy:
Szklarski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/1861643.pdf
Data publikacji:
2016
Wydawca:
Wyższa Szkoła Bezpieczeństwa Publicznego i Indywidualnego Apeiron w Krakowie
Tematy:
network of sensors
genetic algorithm
sensors deployment
area coverage
Opis:
Ensuring optimal coverage is a central objective of every sensor deployment plan. Effective monitoring of the environment helps to minimize manpower and time, while enhancing surveillance capability. In this paper, a solution for improved area coverage was presented. A lattice of a pre-defined parameter has been used as an input for the algorithm. For the purpose of the research the blanket deployment strategy has been adopted. Then, a genetic algorithm has been proposed and implemented to find an optimal solution. The proposed approach has been tested and the conclusions have been drawn. The results proved that the proposed genetic algorithm could already provide satisfactory results, usually finding only suboptimal solutions.
Źródło:
Security Dimensions; 2016, 19(19); 150-181
2353-7000
Pojawia się w:
Security Dimensions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Secure Data Aggregation Mechanism based on Constrained Supervision for Wireless Sensor Network
Autorzy:
Wang, Yubo
Li, Liang
Ao, Chen
Zhang, Puning
Wang, Zheng
Zhao, Xinyang
Powiązania:
https://bibliotekanauki.pl/articles/226140.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Wireless Sensor Network
security data aggregation
trust management
constrained supervision
Opis:
The data aggregation process of wireless sensor networks faces serious security problems. In order to defend the internal attacks launched by captured nodes and ensure the reliability of data aggregation, a secure data aggregation mechanism based on constrained supervision is proposed for wireless sensor network, which uses the advanced LEACH clustering method to select cluster heads. Then the cluster heads supervise the behaviors of cluster members and evaluate the trust values of nodes according to the communication behavior, data quality and residual energy. Then the node with the highest trust value is selected as the supervisor node to audit the cluster head and reject nodes with low trust values. Results show that the proposed mechanism can effectively identify the unreliable nodes, guarantee the system security and prolong the network life time.
Źródło:
International Journal of Electronics and Telecommunications; 2019, 65, 2; 259-266
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pomiarowa sieć radiowa o niskim zużyciu energii
Energy efficient wireless sensor network
Autorzy:
Boniewicz, R.
Zieliński, M.
Powiązania:
https://bibliotekanauki.pl/articles/156068.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
sieć radiowa
CC1100
moduł radiowy
Scilab
Metanet
graf skierowany
stanowisko pomiarowe
niskie zużycie energii
wireless sensor network
radio module
directed graph
measurement system
low energy consumption
Opis:
W artykule opisano prace badawcze służące zaprojektowaniu, symulacji i realizacji radiowej sieci pomiarowej charakteryzującej się niskim zużyciem energii. Proponowana sieć ma charakteryzować się równomiernym zużyciem energii przez wszystkie moduły oraz dynamicznym algorytmem trasowania pozwalającym na długotrwałą pracę sieci. W artykule opisano stanowisko służące do badań i kontroli sieci, metodę trasowania, a także sposób symulacji w środowisku Scilab. Podano także parametry charakteryzujące projektowaną sieć, takie jak czasy transmisji i pobór energii.
This paper presents research, design and simulations of an energy efficient wireless sensor network. It describes a routing protocol designed for evenly energy consumption. There is shown how to simulate a network in the Scilab environment. The test wireless sensor network including a measurement station and construction of radio modules are presented. The radio modules consists of Texas Instruments/chipcon's CC1100 transceiver and Atmel's ATmega32 microcontroller. The network can join up to 65535 radio modules (16 bit addressing). The measurement station consists of programmable power supply, an oscilloscope, precise multimeters and a JTAG module. It allows measuring the current consumption in different working modes, checking the time of operations and controlling the radio system. This solution will be used in a wireless water meter network. The most important feature in this application is a long working time (up to 10 years). The even energy consumption should extend the network reliability and its time of work.
Źródło:
Pomiary Automatyka Kontrola; 2011, R. 57, nr 12, 12; 1515-1517
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Embedded RFID and Wireless Mesh Sensor Network Materializing Automated Production Line Monitoring
Autorzy:
Zulkifli, C.
Hassan, H.
Ismail, W.
Semunab, S.
Powiązania:
https://bibliotekanauki.pl/articles/1402545.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
84.84.-x
07.57.-c
Opis:
In industrial manufacturing, wireless network can be used in supply chain, retail stock management, electronic security keys, and theft prevention. A proactive and cost effective solution advancement is needed in the industrial manufacturing to monitor and control output performance at a manufacturing plant. It is with this reason that the manufacturers require an efficient communication and real time feedback to maximize uptime and improve productivity. Consistent with the future market of new technologies deployment this invention proposes a new complete solution method and architecture of embedded active radio frequency identification with counter system through wireless mesh sensor network platform and smart data processing adopted through web-based monitoring system for industrial automation. The ability of the developed system to function in machine-to-machine wireless communication and the adoption of web-based monitoring and data centralization contributes improvement in reducing errors with human intervention. In this paper we discuss the framework approach of a smart web-based monitoring and data acquisition system on wireless mesh sensor network platform. The evaluations and measurements have been conducted in real world environments which are conducted at selected industrial production factory.
Źródło:
Acta Physica Polonica A; 2015, 128, 2B; B-86-B-89
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Challenges in Integrating Wireless Sensor Network and Internet of Things for Environmental Monitoring
Autorzy:
Vijayalakshmi, S. R.
Muruganand, S.
Powiązania:
https://bibliotekanauki.pl/articles/1193537.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Environmental monitoring
Internet of Things
Temperature and humidity measurement
Wireless Sensor Network
Opis:
Hardware technology developments and wireless communications enables the development of wireless sensor networks (WSNs). WSN will need to be connected to the Internet due to its variety of applications and their importance. This paper discusses the challenges in integrating WSN and IoT (Internet of Things). The best ways of integrating WSN and IoT for environmental monitoring are analyzed. The sensor node is developed to monitor environmental parameters such as temperature and humidity. The sensor SHT75 to sense the temperature and humidity of the environment, XBeePro to communicate with gateway, LCD to display information are interfaced with MSP430 Microcontroller. The microcontroller is used for processing, controlling and communicating the information. The sensor nodes are deployed to measure the parameter in the target area. The information is communicated to the world of Internet in one of the best integrating ways discussed in the paper.
Źródło:
World Scientific News; 2016, 41; 1-8
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acquisition Module for a Wireless Acoustic Sensor Network Suitable for Argentinian Urban Environments
Autorzy:
Caccia, Matias
Sacerdoti, Eduardo
Lombera, Esteban
Powiązania:
https://bibliotekanauki.pl/articles/2202298.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
acoustic sensor
WASN
wireless acoustic sensor network
urban noise
noise map
smart city
Opis:
Urban noise is a main component in the deterioration of life quality for people in urban areas. This problem mainly affects those who periodically travel through high traffic areas. The first step in reducing environmental noise is to characterize the urban setting with acoustic metrology for its diagnosis and control. This document exposes the design, construction and characterization of a wireless urban noise measurement module. The device works as a low-cost node with the capacity to be replicated for the deployment of a network of wireless acoustic sensors that allows the elaboration of dynamic urban noise maps. Each module consists of an electrical autonomy system, a single board computer and a MEMS microphone. The project also includes the design of a web portal to display measurement results in real time. The low-cost system was calibrated and compared with a class 1 sound level meter used to measure urban noise in the Autonomous City of Buenos Aires (CABA). Global differences of less than 1 dB were obtained. Urban noise was measured near the National University of Tres de Febrero following guidelines of ISO 1996-2 standard. The performance obtained in the evaluation instance and the results of the comparison were satisfactory.
Źródło:
Journal of Ecological Engineering; 2022, 23, 12; 89--98
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effective Approach for Data Aggregation in Wireless Sensor Network: a Structure Free Approach
Autorzy:
Prasad, U.
Adane, D. S.
Powiązania:
https://bibliotekanauki.pl/articles/108713.pdf
Data publikacji:
2014
Wydawca:
Społeczna Akademia Nauk w Łodzi
Tematy:
wireless sensor networks
throughput
delay
energy efficiency
protocols
event based
dynamic
Data Aggregation
Opis:
Wireless Sensor Network consist of thousands sensor node which have limited Power, Computation, Sensing and Communication capabilities. Among all operation of Sensor Node, Wireless Communication consumes most of the energy. So it is necessary to decrease the number of packets transmitted through the network. Many Sensor Node could detect similar event, which increases the overall bandwidth utilization to transmit redundant data. Here Nodes computation is cheaper than communication in terms of energy. So the technique of Data Aggregation is applied to summarize data which decreases the amount of data transmitted in the network, which in turn increases the lifetime of the network. Many Data aggregation protocols are based on a structured approach which is suitable for data collection application. But maintenance of the structure is an extra overhead and this approach is not suitable for dynamic scenario. So we propose an ad-hoc data aggregation protocol for dynamic scenario mainly event based application.
Źródło:
Journal of Applied Computer Science Methods; 2014, 6 No. 1; 55-65
1689-9636
Pojawia się w:
Journal of Applied Computer Science Methods
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Overcoming Localization Errors due to Node Power Drooping in a Wireless Sensor Network
Autorzy:
Khan, S. A.
Daachi, B.
Djouani, K.
Powiązania:
https://bibliotekanauki.pl/articles/226280.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wireless sensor networks
RSSI
localization
range-free scheme
energy considerations
neural networks
Opis:
Received Signal Strength Indication (RSSI) plays a vital role in the range-free localization of sensor nodes in a wireless sensor network and a good amount of research has been made in this regard. One important factor is the battery voltage of the nodes (i.e., the MICAz sensors) which is not taken into account in the existing literature. As battery voltage level performs an indispensable role for the position estimation of sensor nodes through anchor nodes therefore, in this paper, we take into a account this crucial factor and propose an algorithm that overcomes the problem of decaying battery. We show the results, in terms of more precise localization of sensor nodes through simulation. This work is an extension to [1] and now we also use neural network to overcome the localization errors generated due to gradual battery voltage drooping.
Źródło:
International Journal of Electronics and Telecommunications; 2011, 57, 3; 341-346
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Concept and Security Analysis of Wireless Sensor Network for Gas Lift in Oilwells
Autorzy:
Bielecki, B.
Ksiezopolski, B.
Krajka, A.
Wierzbicki, A.
Powiązania:
https://bibliotekanauki.pl/articles/106180.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
wireless sensor network
WSN
Gas Lift Valves
security requirements
Opis:
Pipelines, wellbores and ground installations are permanently controlled by sensors spread across the crucial points in the whole area. One of the most popular techniques to support proper oil drive in a wellbore is a Gas Lift. In this paper we present the concept of using wireless sensornetwork (WSN) in the oil and gas industry installations. Assuming that Gas Lift Valves (GLVs) in a wellbore annulus are sensor controlled, the proper amount of injected gas should be provided. In aground installation, the optimized amount of loaded gas is a key factor in the effcient oil production.This paper considers the basic foundations and security requirements of WSN dedicated to Gas Lift Installations. Possible attack scenarios and their influence on the production results are shown aswell.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica; 2014, 14, 2; 76-85
1732-1360
2083-3628
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Realizacja bezprzewodowej sieci czujników w standardzie ZigBee
Realization of the ZIGBEE wireless sensor network
Autorzy:
Gadaj, M.
Smulko, J.
Powiązania:
https://bibliotekanauki.pl/articles/267883.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
standard ZigBee
sieci bezprzewodowe
ZigBee standard
wireless network
Opis:
W pracy przedstawiono koncepcję budowy bezprzewodowej sieci ZigBee, z wykorzystaniem mikro-kontrolerów firmy Microchip Technology Inc. oraz modułów radiowych wykonanych na układzie CC2420 i pracujących w paśmie częstotliwości 2,5 GHz. Sieć składa się z węzła centralnego, dołączonego do komputera przenośnego, rejestrującego i analizującego dane od wszystkich węzłów sieci za pomocą przygotowanego programu. Węzły sieci komunikują się miedzy sobą, przekazując dane do węzła centralnego bez konieczności bezpośredniej komunikacji z tym węzłem. Przedstawiono szczegóły dotyczące opracowanego oprogramowania realizującego zadanie routingu przesyłanych w sieci danych. Opisano najistotniejsze problemy techniczne, jakie pojawiają się przy realizacji sieci bezprzewodowej w tym standarcie.
The conception of a wireless ZigBee sensor network has been presented. The network nodes consist of a microcontroller, produced by Microchip Technology Inc. and the trancievers made of CC2420 circuits and working at the frequency 2,5GHz. The network includes a central node, linked directly to the laptop, which collects and analysis data from all the network nodes by applying the prepared software. The network nodes communicate between each other and transmitt data to the central node without a direct communication. The details of the software which carry out routing between the nodes are enclosed. The most crucial practical problems that have appeared during preparation process are presented as well.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2007, 23; 45-48
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Delay analysis in wireless sensor network protocols
Analiza opóźnień w protokołach bezprzewodowych sieci sensorowych
Autorzy:
Dymora, P.
Mazurek, M.
Powiązania:
https://bibliotekanauki.pl/articles/152924.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
quality of service
wireless sensor networks protocols
packet delay analysis
jakość usług
protokoły bezprzewodowych sieci sensorowych
analiza opóźnień pakietów
Opis:
Sensor networks form a special group of distributed measurement systems that can be used to control a wide range of applications with strong requirements for packet delay minimization. This can be achieved by using appropriate algorithms responsible for packet routing. The study of communication delays show that architecture and protocols can be used to provide support for QoS in the sensor network applications. This problem is a major challenge for researchers. This paper presents a comparative analysis of selected routing algorithms and their impact on the packet delays in the work.
Dynamiczny rozwój miniaturyzacji oraz niskie zapotrzebowanie na energię przyczyniło się do wzrostu popularności bezprzewodowych sieci sensorowych. Sieci te tworząc specjalną grupę rozproszonych systemów pomiarowych, mogą być wykorzystane do obsługi szerokiej gamy aplikacji, mających silne wymagania co do opóźnień w przesyle informacji między węzłami, jak również strat powstałych podczas transmisji danych. Zakres wykorzystania sieci jest praktycznie nieograniczony, od systemów sieci czujników przeznaczonych m.in. do monitorowania środowiska (pożary, powodzie itp.), kontroli i monitoringu stanu zdrowia, zastosowań w automatyce domowej, systemach bezpieczeństwa czy systemach militarnych. Aby zapewnić prawidłowe działanie systemu wymagana jest duża stabilność pracy sieci, a więc niski poziom opóźnień w działaniu, uwarunkowany m.in. odpornością sieci na uszkodzenia. Sieć czujników musi reagować na zmiany w topologii sieci, wywołane przez awarię węzłów, brak zasilania czy różnego rodzaju zakłócenia elektromagnetyczne. Istotną kwestią dla zapewnienia odpowiedniego poziomu jakości transmisji jest zapewnienie maksymalnej wydajności, energooszczędności i minimalnego poziomu błędów. Można to osiągnąć poprzez zastosowanie odpowiednich algorytmów odpowiedzialnych za trasowanie pakietów. Przeprowadzone badania opóźnień komunikacyjnych pokazują, które architektury lub protokoły mogą zostać wykorzystane do zapewnienia wsparcia QoS dla obsługiwanych przez sieć sensorową aplikacji. Problem ten stanowi duże wyzwanie dla naukowców. W niniejszej pracy przedstawiono analizę porównawczą wybranych algorytmów trasowania i ich wpływ na opóźnienia w pracy.
Źródło:
Pomiary Automatyka Kontrola; 2013, R. 59, nr 10, 10; 1054-1056
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
EEULA: an energy-aware event-driven unicast algorithm for wireless sensor network by learning automata
Autorzy:
Kashani, A. A. S.
Noori, A. M. M.
Powiązania:
https://bibliotekanauki.pl/articles/102180.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
network lifetime
wireless sensor network
learning automata
energy efficiency algorithm
Opis:
Energy consumption is one of the major challenges in wireless sensor networks, thus necessitating an approach for its minimization and for load balancing data. The network lifetime ends with the death of one of its nodes, which, in turn, causes energy depletion in and partition of the network. Furthermore, the total energy consumption of nodes depends on their location; that is, because of the loaded data, energy discharge in the nodes close to the base station occurs faster than other nodes, the model presented here, through using learning automata, selects the path appropriate for data transferring; the selected path is rewarded or penalized taking the reaction of surrounding paths into account. We have used learning automata for energy management in finding the path; the routing protocol was simulated by NS2 simulator; the lifetime, energy consumption and balance in an event-driven network in our proposed method were compared with other algorithms.
Źródło:
Advances in Science and Technology. Research Journal; 2016, 10, 30; 9-18
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring górnej sieci trakcyjnej z wykorzystaniem bezprzewodowej sieci sensorowej – węzeł pomiarowy
Overhead contact line monitoring using wireless sensor network – sensor node
Autorzy:
Karwowski, K.
Kuciński, M.
Kulig, E.
Powiązania:
https://bibliotekanauki.pl/articles/250920.pdf
Data publikacji:
2015
Wydawca:
Instytut Naukowo-Wydawniczy TTS
Tematy:
kolej
pojazd szynowy
trakcja
rail
rail vehicle
traction
Opis:
Wraz ze wzrostem prędkości pojazdów trakcyjnych rośnie potrzeba utrzymania sieci trakcyjnej w odpowiednim stanie. Konieczny jest ciągły monitoring i diagnostyka pozwalające wykrywać zjawiska pogarszające jakość odbioru energii z sieci trakcyjnej takie jak: nadmierne zużycie nakładek stykowych czy złe nastawy odbieraka prądu pojazdu. Jedną z metod jest umieszczenie czujników przyspieszenia na górnej sieci trakcyjnej. Analiza przebiegu tej wielkości fizycznej pozwoli określić stan układu sieć jezdna - odbierak prądu. Wybranie łączności bezprzewodowej jako medium transmisyjnego pomiędzy elementami sieci sensorowej, pozwala ominąć konieczność izolacji elektrycznej elementów sieci. Projekt musi uwzględniać niskie zużycie energii a także metody jej pozyskiwania z dostępnych źródeł odnawialnych. Jako standard komunikacyjny wybrano Bluetooth 4.0 Low Energy. Jest on dedykowany dla konsumenckich urządzeń czujnikowych, lecz jego zalety mogą znaleźć zastosowanie również w obszarze przemysłu. W artykule przedstawiono projekt i realizację sieci pozwalającej zbadać przebieg przyspieszeń sieci jezdnej. Opisano wykorzystane rozwiązania sprzętowo-programowe. Zaprezentowano wstępne wyniki pomiarów laboratoryjnych.
Together with increasing traction vehicle’s speed a need to maintain a traction network in an appropriate state rises. Constant monitoring and diagnostics is necessary, allows to detect unfavorable phenomenon deteriorating power receive quality e.g.: excessive wear of contact strips, incorrect vehicle’s trolley settings. One of the methods is to place acceleration sensor on overhead contact line. Waveform’s analysis should allow estimation of traction network – trolley system shape. Wireless network selection as sensor network communication medium bypasses necessity for electric insulation between network’s elements. The design has to take into an account low power usage and renewable sources energy harvesting methods. Bluetooth 4.0 Low Energy as transmission medium was chosen. It is dedicated for customer marker, however its multiple advantages can be exploited in industrial sensors. In paper was presented design and realization of wireless sensor network to investigate the catenary line acceleration. Hardware and software solution was described. Preliminary laboratory measurement’s results were presented.
Źródło:
TTS Technika Transportu Szynowego; 2015, 12; 2644-2649
1232-3829
2543-5728
Pojawia się w:
TTS Technika Transportu Szynowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distributed scheduling of measurements in a sensor network for parameter estimation of spatio-temporal systems
Autorzy:
Patan, M.
Kowalów, D.
Powiązania:
https://bibliotekanauki.pl/articles/331122.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
sensor network
distributed parameter system
parameter estimation
experimental design
sensor scheduling
sieć sensorowa
układ o parametrach rozłożonych
estymacja parametrów
projekt eksperymentalny
Opis:
The main aim of the paper is to develop a distributed algorithm for optimal node activation in a sensor network whose measurements are used for parameter estimation of the underlying distributed parameter system. Given a fixed partition of the observation horizon into a finite number of consecutive intervals, the problem under consideration is to optimize the percentage of the total number of observations spent at given sensor nodes in such a way as to maximize the accuracy of system parameter estimates. To achieve this, the determinant of the Fisher information matrix related to the covariance matrix of the parameter estimates is used as the qualitative design criterion (the so-called D-optimality). The proposed approach converts the measurement scheduling problem to a convex optimization one, in which the sensor locations are given a priori and the aim is to determine the associated weights, which quantify the contributions of individual gaged sites to the total measurement plan. Then, adopting a pairwise communication scheme, a fully distributed procedure for calculating the percentage of observations spent at given sensor locations is developed, which is a major novelty here. Another significant contribution of this work consists in derivation of necessary and sufficient conditions for the optimality of solutions. As a result, a simple and effective computational scheme is obtained which can be implemented without resorting to sophisticated numerical software. The delineated approach is illustrated by simulation examples of a sensor network design for a two-dimensional convective diffusion process.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2018, 28, 1; 39-54
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Building a wireless sensor network with use of RFM 12 modules - data exchange between nodes
Autorzy:
Mazur, D.
Maciąg, P.
Kielan, P.
Powiązania:
https://bibliotekanauki.pl/articles/114472.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
IEEE 802.15.4 standard
wireless sensor networks
RFM modules
ATmega processors
Opis:
IEEE 802.15.4 standard defines Physical (PHY) and Wireless Medium Access Control (MAC) layers for wireless sensor networks (WSN). In recent years, many types of wireless sensor networks have been developed based on this standard. Currently, probably the most popular implementation of the mentioned standard are wireless ZigBee networks. Moreover, ZigBee provides functions normally attributed to the higher layers of network protocol stack. Among those the most important functions are: routing of data, data encryption and providing redundancy connections between devices in the network. We present a slightly different approach to the construction of wireless sensor networks. This is the beginning of series of papers about implementation of the IEEE 802.15.4 standard and the previously mentioned expansion functions in the network, built with RFM wireless communication modules and ATmega processors. This paper describes the basics of compiling wireless connection and data transmission with using RFM modules. In addition, blocking and non-blocking types of connections between radio modules and ways to connect RFM modules with ATmega processors are described.
Źródło:
Measurement Automation Monitoring; 2015, 61, 9; 438-442
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Node Localization based on Anchor Placement using Fuzzy C-Means in a Wireless Sensor Network
Autorzy:
Irid, Sidi Mohammed Hadj
Hadjila, Mourad
Hachemi, Mohammed Hicham
Souiki, Sihem
Mosteghanemi, Reda
Mostefai, Chaima
Powiązania:
https://bibliotekanauki.pl/articles/2200723.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
WSN
localization algorithm
anchors
GM-SDP-2
WLS
CRLB
Fuzzy C-Means
RMSE
CDF
Opis:
Localization is one of the oldest mathematical and technical problems that have been at the forefront of research and development for decades. In a wireless sensor network (WSN), nodes are not able to recognize their position. To solve this problem, studies have been done on algorithms to achieve accurate estimation of nodes in WSNs. In this paper, we present an improvement of a localization algorithm namely Gaussian mixture semi-definite programming (GM-SDP-2). GMSDP is based on the received signal strength (RSS) to achieve a maximum likelihood location estimator. The improvement lies in the placement of anchors through the Fuzzy C-Means clustering method where the cluster centers represent the anchors’ positions. The simulation of the algorithm is done in Matlab and is based on two evaluation metrics, namely normalized root-mean-squared error (RMSE) and cumulative distribution function (CDF). Simulation results show that our improved algorithm achieves better performance compared to those using a predetermined placement of anchors.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 1; 99--104
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model symulacyjny sieci sensorowej na potrzeby systemów fuzji danych
Simulation model of sensor network for data fusion
Autorzy:
Dyk, M.
Najgebauer, A.
Pierzchała, D.
Powiązania:
https://bibliotekanauki.pl/articles/404003.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Symulacji Komputerowej
Tematy:
sieci sensorowe
fuzja danych
symulacja dyskretna zdarzeniowa
sensor networks
data fusion
discrete event simulation
Opis:
W pracy przedstawiono model sieci sensorowej będący podstawą dla budowy symulatora, który może być wykorzystany do generowania sytuacji oraz danych na potrzeby systemów fuzji danych. Model, a w konsekwencji symulator, pozwala na zbudowanie heterogenicznej sieci (lub wielu sieci), której sensory obserwują zmieniające się w czasie zjawiska. Zaletami proponowanego modelu są: możliwość szerokiej konfiguracji węzłów, które posiadać mogą wiele zdolności do obserwacji środowiska, również uznawanych obecnie za futurystyczne, oraz łatwa konfigurowalność algorytmów trasowania i komunikacji bezprzewodowej. Budowany w oparciu o przedstawiony model symulator będzie również umożliwiał modyfikację zachowania sensorów poprzez ich makroprogramowanie.
Paper presents wireless sensor network model which is base for desining and implementation of a simulator, which can be used by data fusion systems. The model, and in consequence the simulator, allows user to build a heterogeneous, wireless network. Its sensors can observe phenomena, which may change during simulation process. Proposed model has some advantages. First of all, sensors can be widely configured. They can have multiple observational capabilities, also those that are considered futuristic.
Źródło:
Symulacja w Badaniach i Rozwoju; 2013, 4, 4; 203-212
2081-6154
Pojawia się w:
Symulacja w Badaniach i Rozwoju
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum Bend Shortest Rectilinear Route Discovery for a Moving Sink in a Grid Based Wireless Sensor Network
Autorzy:
Thomas, Sanu
Mathew, Thomaskutty
Powiązania:
https://bibliotekanauki.pl/articles/226096.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
minimum bend shortest paths
travelling salesman problem
binary integer programming
edge orientation index
Vertex Bend Index
Vertex-Edge Incident Matrix
Opis:
In a rectilinear route, a moving sink is restricted to travel either horizontally or vertically along the connecting edges. We present a new algorithm that finds the shortest round trip rectilinear route covering the specified nodes in a grid based Wireless Sensor Network. The proposed algorithm determines the shortest round trip travelling salesman path in a two-dimensional grid graph. A special additional feature of the new path discovery technique is that it selects that path which has the least number of corners (bends) when more than one equal length shortest round trip paths are available. This feature makes the path more suitable for moving objects like Robots, drones and other types of vehicles which carry the moving sink. In the prosed scheme, the grid points are the vertices of the graph and the lines joining the grid points are the edges of the graph. The optimal edge set that forms the target path is determined using the binary integer programming.
Źródło:
International Journal of Electronics and Telecommunications; 2019, 65, 2; 267-276
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Combining fuzzy and cellular learning automata methods for clustering wireless sensor network to increase life of the network
Autorzy:
Aramideh, J
Jelodar, H
Powiązania:
https://bibliotekanauki.pl/articles/957968.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
wireless sensor network
clustering
fuzzy logic
cellular learning automata
Opis:
Wireless sensor networks have attracted attention of researchers considering their abundant applications. One of the important issues in this network is limitation of energy consumption which is directly related to life of the network. One of the main works which have been done recently to confront with this problem is clustering. In this paper, an attempt has been made to present clustering method which performs clustering in two stages. In the first stage, it specifies candidate nodes for being head cluster with fuzzy method and in the next stage, the node of the head cluster is determined among the candidate nodes with cellular learning automata. Advantage of the clustering method is that clustering has been done based on three main parameters of the number of neighbors, energy level of nodes and distance between each node and sink node which results in selection of the best nodes as a candidate head of cluster nodes. Connectivity of network is also evaluated in the second part of head cluster determination. Therefore, more energy will be stored by determining suitable head clusters and creating balanced clusters in the network and consequently, life of the network increases.
Źródło:
Advances in Science and Technology. Research Journal; 2014, 8, 24; 1-8
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowania sieci sensorowej do badania parametrów życiowych człowieka
Applications of the sensor network to examine human vital signs
Autorzy:
Nogły, Rafał
Wnuk, Marian
Powiązania:
https://bibliotekanauki.pl/articles/24065048.pdf
Data publikacji:
2022
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
sieć sensorowa
sensory
parametry życiowe
promieniowanie elektromagnetyczne
zakłócenia elektromagnetyczne
sensor network
sensors
vital signs
electromagnetic radiation
electromagnetic interference
Opis:
Artykuł koncentruje się na dostępnych urządzeniach wykorzystywanych w sieciach sensorowych do badania parametrów życiowych człowieka, a także wiedzy dotyczącej sensorów i ich wrażliwości na zakłócenia elektromagnetyczne. Przedstawiono podstawowe pojęcia opisujące badaną problematykę, które pozwalają na jej zrozumienie. Dodatkowo wskazano na wymagania dotyczące implementacji sieci sensorowej według wymagań służb. Pozwoli to na zobrazowanie problematyki dotyczącej opracowania uniwersalnej sieci sensorowej podwyższającej bezpieczeństwo żołnierza na polu walki. Należy mieć również na uwadze, że przy docelowej implementacji konieczne będzie przeprowadzenie dodatkowych badań w utrudnionych warunkach ze względu na promieniowanie elektromagnetyczne.
The article deals with the currently available devices used in sensor networks to examine human vital signs and the available knowledge about sensors and their sensitivity to electromagnetic interference. The article contains the basic concepts describing the studied issues that allow us to understand the being researched scientific field. In addition, it contains requirements for the implementation of the sensor network for the requirements of the services. This will allow you to illustrate the issues related to the development of a universal sensor network that increases the security of a soldier on the battlefield. It should also be borne in mind that with the final implementation it will also be necessary to carry out additional tests in difficult environments due to electromagnetic radiation.
Źródło:
Biuletyn Wojskowej Akademii Technicznej; 2022, 71, 4; 111--120
1234-5865
Pojawia się w:
Biuletyn Wojskowej Akademii Technicznej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Integration, Analysis and Visualization of Sensor Data from Dispersed Wireless Sensor Network Systems Using the SWE Framework
Autorzy:
Lee, Y. J.
Trevathan, J.
Atkinson, I.
Read, W.
Powiązania:
https://bibliotekanauki.pl/articles/308227.pdf
Data publikacji:
2015
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
environment data
environmental monitoring
sensor technologies
standardization
web-based visualization
Opis:
Wireless Sensor Networks (WSNs) have been used in numerous applications to remotely gather real-time data on important environmental parameters. There are several projects where WSNs are deployed in different locations and operate independently. Each deployment has its own models, encodings, and services for sensor data, and are integrated with different types of visualization/analysis tools based on individual project requirements. This makes it dicult to reuse these services for other WSN applications. A user/system is impeded by having to learn the models, encodings, and services of each system, and also must integrate/interoperate data from different data sources. Sensor Web Enablement (SWE) provides a set of standards (web service interfaces and data encoding/model specications) to make sensor data publicly available on the web. This paper describes how the SWE framework can be extended to integrate disparate WSN systems and to support standardized access to sensor data. The proposed system also introduces a web-based data visualization and statistical analysis service for data stored in the Sensor Observation Service (SOS) by integrating open source technologies. A performance analysis is presented to show that the additional features have minimal impact on the system. Also some lessons learned through implementing SWE are discussed.
Źródło:
Journal of Telecommunications and Information Technology; 2015, 4; 86-97
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
FPGA and ASIC implementation of the algorithm for traffic monitoring in urban areas
Autorzy:
Szczepański, S.
Wójcikowski, M.
Pankiewicz, B.
Kłosowski, M.
Żaglewski, R.
Powiązania:
https://bibliotekanauki.pl/articles/202318.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
FPGA
ASIC
sensor network
Opis:
This paper describes the idea and the implementation of the image detection algorithm, that can be used in integrated sensor networks for environment and traffic monitoring in urban areas. The algorithm is dedicated to the extraction of moving vehicles from real-time camera images for the evaluation of traffic parameters, such as the number of vehicles, their direction of movement and their approximate speed. The authors, apart from the careful selection of particular steps of the algorithm towards hardware implementation, also proposed novel improvements, resulting in increasing the robustness and the efficiency. A single, stationary, monochrome camera is used, simple shadow and highlight elimination is performed. The occlusions are not taken into account, due to placing the camera at a location high above the road. The algorithm is designed and implemented in pipelined hardware, therefore high frame-rate efficiency has been achieved. The algorithm has been implemented and tested in FPGA and ASIC.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2011, 59, 2; 137-140
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Self-organization and Routing Algorithms for the Purpose of the Sensor Network Monitoring Environmental Conditions on a Given Area
Autorzy:
Bronk, K.
Lipka, A.
Wereszko, B.
Żurek, J.
Żurek, K.
Powiązania:
https://bibliotekanauki.pl/articles/307916.pdf
Data publikacji:
2016
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
network management
network self-organization
sensor networks
Opis:
The article describes an implementation of wireless sensor network (WSN) based on the IEEE 802.15.4-2006 standard, which was designed to monitor environmental conditions (e.g. temperature, humidity, light intensity, etc.) on a given area. To carry out this task, a self-organization algorithm called KNeighbors was selected. It exhibits low computational complexity and is satisfactory with respect to energy consumption. Additionally, the authors proposed a novel routing algorithm and some modifications to the MAC layer of the IEEE 802.15.4 standard. The article discusses the selected algorithms and procedures that were implemented in the network.
Źródło:
Journal of Telecommunications and Information Technology; 2016, 4; 39-52
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Percolation Driven Flooding for Energy Efficient Routing in Dense Sensor Networks
Autorzy:
Vakulya, G.
Simon, G.
Powiązania:
https://bibliotekanauki.pl/articles/308970.pdf
Data publikacji:
2009
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
flood routing
percolation
sensor network
Opis:
Simple flooding algorithms are widely used in ad hoc sensor networks either for information dissemination or as building blocks of more sophisticated routing protocols. In this paper a percolation driven probabilistic flooding algorithm is proposed, which provides large message delivery ratio with small number of sent messages, compared to traditional flooding. To control the number of sent messages the proposed algorithm uses locally available information only, thus induces negligible overhead on network traffic. The performance of the algorithm is analyzed and the theoretical results are verified through simulation examples.
Źródło:
Journal of Telecommunications and Information Technology; 2009, 2; 5-12
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Considerations on coverage and navigation in wireless mobile sensor networks
Autorzy:
Goszczynski, T.
Pilat, Z.
Powiązania:
https://bibliotekanauki.pl/articles/384966.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
wireless
mobile sensor network
coverage
navigation
Opis:
In wireless mobile sensor networks, periodic calculation of coverage is very important, since mobile sensors can be moved adequately to current needs, thus increasing the coverage. Those moves require the execution of navigation tasks. Global network central algorithms for those tasks are very costly regarding energy consumption and computational resources. Considerations presented herein pertain to the best algorithms for a network of numerous small mobile sensor nodes used for monitoring of large terrains. Localized algorithms suggested in this paper help calculate the coverage on-line and locally with the involvement of neighboring nodes only. Furthermore, localized collaborative navigation is presented. It enables yielding position estimation with no GPS use and ensures improvement rather than deterioration over time. It uses multi-sensor fusion algorithms based on optimization and a distributed iterative extended Kalman Filter.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2011, 5, 1; 58-63
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance analysis of multi-layered clustering network using fault tolerance multipath routing protocol (MRP-FT) in a wireless sensor network (WSN)
Autorzy:
Kaur, Gagandeep
Powiązania:
https://bibliotekanauki.pl/articles/2204100.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
scalability
fault tolerance
neural networks
Boltzmann learning
wireless sensor network
Opis:
Wireless sensor networks (WSNs) are ad hoc and self-configuring networks having the possibility that any sensor node can connect or leave the network. With no central controller in WSN, wireless sensor nodes are considered responsible for data routing in the networks. The wireless sensor nodes are very small in size and have limited resources, therefore, it becomes difficult to recharge or replace the battery of the sensor nodes at far places. The present study focused on reducing the battery consumption of the sensor nodes by the deployment of the newly proposed Fault Tolerance Multipath Routing Protocol (MRP-FT) as compared with the existing Low Energy Adaptive Clustering Hierarchy (LEACH) protocol under particle swarm optimisation based fault tolerant routing (PSO-FT) technique. The proposed algorithm of MRP-FT-based on the dynamic clustering technique using Boltzmann learning of the neural network and the weights were adjusted according to the area of networks, number of nodes and rounds, the initial energy of nodes (E0), transmission energy of nodes (d
Źródło:
Operations Research and Decisions; 2023, 33, 1; 75--92
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Survey of Multi-Objective Deployment in Wireless Sensor Networks
Autorzy:
Marks, M.
Powiązania:
https://bibliotekanauki.pl/articles/308483.pdf
Data publikacji:
2010
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
coverage
lifetime
placement
positioning
wireless sensor network
Opis:
The major challenge in designing wireless sensor networks (WSNs) is to find tradeoff between the desired and contrary requirements for the lifetime, coverage or cost while coping with the computation, energy and communication constraints. This paper examines the optimal placement of nodes for a WSN. It is impossible to consider the deployment of the nodes separately from WSNs applications. We highlight the properties of WSNs applications that determine the placement problem. We identify and enumerate the various objectives that should be considered. The paper provides an overview and concentrates on multi-objective strategies, their assumptions, optimization problem formulation and results.
Źródło:
Journal of Telecommunications and Information Technology; 2010, 3; 36-41
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
System monitorujący pracę bezprzewodowej sieci sensorowej oparty na przestrzennych typach danych
Wireless sensor network monitoring system based on spatial data types
Autorzy:
Dymora, P.
Mazurek, M.
Maciąg, P.
Powiązania:
https://bibliotekanauki.pl/articles/154722.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
przestrzenne typy danych
mikroprocesor AVR
protokoły bezprzewodowych sieci sensorowych
spatial data types
microcontrollers AVR
wireless sensor networks protocols
Opis:
Sieci sensorowe znajdują zastosowanie nie tylko w budowie systemów ostrzegających przed zagrożeniami naturalnymi, ale również w projektowaniu inteligentnych budynków czy specjalistycznej aparatury medycznej. System sensorowy składa się zazwyczaj z pewnej liczby węzłów pomiarowych, których zadaniem jest dostarczanie informacji o pewnych pożądanych parametrach. Parametry te mogą mówić np. o stanie poziomu wód rzecznych, stężeniu niebezpiecznych gazów czy występowaniu substancji niebezpiecznych dla środowiska naturalnego. Dobrze zaprojektowana sieć sensorowa powinna cechować się redundancją, możliwością routowania danych pomiędzy węzłami pomiarowymi oraz wykorzystaniem odpowiedniego mechanizmu dostępu do pasma komunikacyjnego. Istotną część systemu sensorowego stanowi aplikacja monitorująca oraz wizualizująca stan sensorów. W niniejszym artykule przedstawiono oryginalne podejście do budowy sieci sensorowej i wizualizacji jej działania z użyciem przestrzennych typów danych.
Because of their low cost, high availability and redundancy, wireless sensor networks are used in wide variety of applications. Today building monitoring systems which can inform about and prevent natural disasters, designing smart houses and supporting contemporary medicine are achieved by using sensor networks. When implementing a wireless sensor network, designer have to elaborate protocol which can be used to provide communication between sensors, user interface for monitoring and controlling system and database in which should be stored data from sensors. This paper presents capabilities of sensor network and spatial data types in designing smart house.
Źródło:
Pomiary Automatyka Kontrola; 2014, R. 60, nr 10, 10; 849-853
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bi-criteria Gateway Placement Problem in Wireless Sensor Networks
Autorzy:
Czajko, M. M.
Wojciechowski, J. M.
Powiązania:
https://bibliotekanauki.pl/articles/226778.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wireless sensor network
bi-criteria optimization
heuristics
Opis:
Over the last few years, wireless sensor networks (WSNs) have started to play more and more important role in civil and military applications. A typical sensor network consists of resource-constrained sensing nodes, which monitor environment and send the data to more powerful gateway nodes. The goal of gateway nodes is to aggregate, process and send the data to other gateways or directly to sink nodes. The proper placement of nodes is needed to provide good network operation. Sensing nodes are often placed in a random manner unlike gateways. Gateways, due to their role and cost, are installed rather in a controlled way. In this paper, a bi-criteria gateway placement problem is introduced. The problem is shown to be NP-hard. We formulate it as a linear programming problem, then we develop the Multi-criteria Simulated Allocation (MSAL) heuristic algorithm, for the purpose of cost-effective gateway deployment and power-effective wireless connection management. Finally, we evaluate the efficiency of the algorithm by comparison with the exact method.
Źródło:
International Journal of Electronics and Telecommunications; 2010, 56, 3; 215-221
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensor Actor Network Modeling utilizing the Holonic Architectural Framework
Autorzy:
Chiu, C.
Chaczko, Z.
Moses, P.
Powiązania:
https://bibliotekanauki.pl/articles/226170.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Extended Kohonen Maps (EKM)
Sensor Actor Networks (SANET)
Wireless Sensor Networks (WSN)
SANET Middleware
POE Classification Model
holonic architecture
Opis:
This paper discusses the results of utilizing advanced EKM modeling techniques to manage Sensor-Actor networks (SANETs) based upon the Holonic Architectural Framework. EKMs allow a quantitative analysis of an algorithmic artificial neural network process by using an indirect-mapping EKM to self-organize from a given input space to administer SANET routing and clustering functions with a control parameter space. Results demonstrate that in comparison to linear approximation techniques, indirect mapping with EKMs provide fluid control and feedback mechanisms by operating in a continuous sensory control space – thus enabling interactive detection and optimization of events in real-time environments.
Źródło:
International Journal of Electronics and Telecommunications; 2010, 56, 1; 49-54
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of cardiovascular risk in assisted living
Autorzy:
Wtorek, J.
Bujnowski, A.
Rumiński, J.
Poliński, A.
Kaczmarek, M.
Nowakowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/220605.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wearable systems
cardiovascular risk
body sensor network
Opis:
Disorders of the heart and blood vessels are the leading cause of health problems and death. Early detection of them is extremely valuable as it can prevent serious incidents (e.g. heart attack, stroke) and associated complications. This requires extending the typical mobile monitoring methods (e.g. Holter ECG, tele-ECG) by introduction of integrated, multiparametric solutions for continuous monitoring of the cardiovascular system. In this paper we propose the wearable system that integrates measurements of cardiac data with actual estimation of the cardiovascular risk level. It consists of two wirelessly connected devices, one designed in the form of a necklace, the another one in the form of a bracelet (wrist watch). These devices enable continuous measurement of electrocardiographic, plethysmographic (impedance-based and optical-based) and accelerometric signals. Collected signals and calculated parameters indicate the electrical and mechanical state of the heart and are processed to estimate a risk level. Depending on the risk level an appropriate alert is triggered and transmitted to predefined users (e.g. emergency departments, the family doctor, etc.).
Źródło:
Metrology and Measurement Systems; 2012, 19, 2; 231-244
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The dependence between the number of rounds and implemented nodes in LEACH routing protocol-based sensor networks
Zależność pomiędzy liczbą rund oraz ilością zaimplementowanych węzłów w sieci sensorowej opartej na protokole LEACH
Autorzy:
Mosorov, V.
Biedron, S.
Panskyi, T.
Powiązania:
https://bibliotekanauki.pl/articles/408889.pdf
Data publikacji:
2017
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
LEACH
sensor network
node
sieć sensorowa
sensor
Opis:
In the 21st century wireless sensor networks have gained much popularity due to their flexibility. This progress has enabled the use of sensor nodes on an unprecedented scale and opened new opportunities for the so-called ubiquitous computerization. The total freedom of nodes distribution within the wireless network, where the wireless characteristic is one of the greatest advantages of the use of wireless sensor networks, implies its greatest weakness, i.e. the limitation of mobile power sources. To overcome this challenge specialized routing protocols, such as LEACH, were ushered in for making the effective use of the energy of the nodes themselves. The purpose of this article is to show how the life of a sensor network depends on the number of nodes equipped with a mobile limited power source.
W XXI wieku sieci czujników bezprzewodowych zyskały bardzo dużą popularność przede wszystkim ze względu na swoją elastyczność. Szybki rozwój oraz postępy w tej dziedzinie umożliwiły wykorzystanie czujników na bezprecedensową skalę i otworzyły nowe możliwości dla tzw. wszechobecnej komputeryzacji. Całkowita swoboda rozmieszczenie węzłów w sieci bezprzewodowej, jest jedną z największych zalet zastosowania tej technologii. Niestety atut ten jest ten przyczyną największej słabości bezprzewodowych sieci sensorowych tj. zapewnieniem wydajnego, bezprzewodowego źródła zasilania. Jednym ze sposobów sprostowania temu wyzwaniu było opracowanie specjalistycznych protokołów routingu takich jak LEACH, których celem było efektywne wykorzystanie mobilnych źródeł energii umieszczonych w samych węzłach. Badanie przeprowadzone i opisane w tej publikacji ukazuje wpływ liczebności węzłów na życie badanej sieci sensorowej z wykorzystaniem protokołu LEACH.
Źródło:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2017, 7, 3; 60-63
2083-0157
2391-6761
Pojawia się w:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A wireless data acquisition and processing system
Autorzy:
Matuszewski, Ł.
Woźniak, W.
Stołowski, P.
Jessa, M.
Powiązania:
https://bibliotekanauki.pl/articles/114722.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
metrology
wireless sensor network
microcomputers
radio transmission
Opis:
The paper describes an idea and realization of a system for collecting and processing data from different types of wireless distributed sensors. The system consists of wireless sensor networks. Each network consists of a server connected to the Internet and theoretically unlimited number of clients. The described server has been built with two types of microcomputers. It provides tools for data collecting and processing. A client, described in Section 5, can be implemented on any PC (Personal Computer) with Windows or Linux including the Raspberry PI and any other microcomputer with HDMI joint. It allows providing an interactive signboard. The data coming from a wireless measuring unit is stored in the server. Two versions of the measuring unit (Section 6) were developed. They differ in wireless modules (compared in Section 2). The first solution uses XBee-PRO 868. The second one uses CC-2530 working in ISM 2.4GHz band. The coverage comparison of both solutions is presented in Section 7. The system can be adjusted to measure any environmental value starting with temperature, humidity and ending with more advanced like the chemical composition of air. There is also included comparison with existing commercial solutions.
Źródło:
Measurement Automation Monitoring; 2015, 61, 7; 330-332
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
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