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Wyświetlanie 1-15 z 102
Tytuł:
A Frontier Statistical Approach Towards Online Tool Condition Monitoring and Optimization for Dry Turning Operation of SAE 1015 Steel
Autorzy:
Moganapriya, Chinnasamy
Rajasekar, Rathanasamy
Gobinath, Velu Kaliyannan
Prabhakaran, Paramasivam
Jaganathan, Saravana Kumar
Powiązania:
https://bibliotekanauki.pl/articles/2049413.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
coated inserts
microflown sensor
flank wear
I-Kaz
neural network
Opis:
This research study intends to develop an online tool condition monitoring system and to examine scientifically the effect of machining parameters on quality measures during machining SAE 1015 steel. it is accomplished by adopting a novel microflown sound sensor which is capable of acquiring sound signals. The dry turning experiments were performed by employing uncoated, TiAlN, TiAlN/WC-C coated inserts. The optimal cutting conditions and their influence on flank wear were determined and predicted value has been validated through confirmation experiment. During machining, sound signals were acquired using Ni DAQ card and statistical analysis of raw data has been performed. Kurtosis and I-Kaz coefficient was determined systematically. The correlation between flank wear and I-Kaz coefficient was established, which fits into power-law curve. The neural network model was trained and developed with least error (3.7603e-5). It reveals that the developed neural network can be effectively utilized with minimal error for online monitoring.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 3; 901-909
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method for the self-organization of a sensor network in belt conveyor exploitation
Metoda samoorganizacji sieci sensorycznej w eksploatacji przenośnika taśmowego
Autorzy:
Stankiewicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/256187.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:
monitoring
rollers
sensor network
self-organization
internet of things (IoT)
krążniki
sieć sensoryczna
samoorganizacja
Internet Rzeczy
Opis:
Systems for monitoring, control, and automation, which are capable for learning and adaptation, are increasingly used in the industry. The Internet of Things (IoT) technology and Machine-to-Machine (M2M) direct communication technology have a stronger and stronger impact on the structure and functionality of machine control systems, shaping the Industry 4.0 idea. Control systems that are in accordance with IoT use the communication channels, which are often highly complicated and which combine all subassemblies, modules, actuators, and sensors. The range of using the intelligent systems in the Polish mining industry also increases. The problem of the self-organization of communication routes (routing) in the complex sensor grid monitoring the operation of belt conveyor’s rollers is presented. The sensors creating the grid are independent, and they are equipped with an electronic measuring system and a Measuring and Transmitting Unit (MTU). Swarm Algorithm (SA), based on a swarm behaviour, was suggested for the creation and optimization of transmission routes in the suggested communication structure.
Systemy monitoringu, sterowania i automatyzacji, zdolne do adaptacji i uczenia się, są co raz szerzej stosowane w praktyce przemysłowej. Techniki Internetu Rzeczy (IoT – Internet of Things) oraz komunikacji bezpośredniej Maszyna do Maszyny (M2M – Machine to Machine) coraz mocniej wpływają na strukturę i funkcjonalność systemów sterowania stosowanych w maszynach, kształtując przy tym ideę Przemysłu 4.0 (Industry 4.0). Systemy sterowania zgodne z IoT wykorzystują sieci komunikacyjne, często o dużym stopniu komplikacji, łącząc poszczególne podzespoły, moduły, elementy wykonawcze i sensory.Wzrasta również obszar zastosowań systemów inteligentnych w polskim górnictwie węgla kamiennego. W artykule przedstawiono zagadnienie samoorganizacji ścieżek komunikacyjnych (trasowanie, routing) w złożonej sieci sensorycznej monitorującej działanie krążników przenośnika taśmowego. Poszczególne sensory, tworzące sieć, są niezależne i wyposażone w elektroniczny układ pomiarowy oraz transmisyjny MTU (Measuring and Transmitting Unit). W celu utworzenia i optymalizacji ścieżek transmisyjnych, w proponowanej strukturze komunikacyjnej, zaproponowano algorytm klasy SA (Swarm Algorithm) bazujący na zachowaniu roju.
Źródło:
Problemy Eksploatacji; 2016, 3; 145-154
1232-9312
Pojawia się w:
Problemy Eksploatacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new method for localization of wireless sensor networks based on path planning of mobile robots
Autorzy:
Ashoori, E
Babagoli, I
Alipour, S
Powiązania:
https://bibliotekanauki.pl/articles/102577.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
sensor nodes
localization
global positioning system (GPS)
wireless sensor network (WSN)
graph theory
Opis:
With an explosive growth of wireless sensor networks (WSN), many of their features and applications have become important. Localization of sensor nodes is one of the most important problems in WSN whose accuracy has a very large impact on its performance. Global positioning system (GPS) is a well-known and powerful way which differentiates methods of its use on each node individually. But, because of high energy consuming and processing GPS, it is inappropriate for WSNs. Different algorithms are suggested to overcome the consumed cost of GPS by putting GPS on only some nodes instead of all nodes in the network for localization. So, for nodes localization, just a number of nodes exploit GPS and, they can help other nodes of network in localization via distribution of their coordinates. The use of a mobile robot to send signals to coordinate the target node localization is a good idea. The mobile robot should move in the right path and can localize node more accurately at lower cost. This paper proposes a new method to localize all nodes through some localized nodes based on graph theory in a tree and network topology. The proposed method provides better performance at the cost of accuracy and the number of nodes that can be made up of local consumption.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 28; 10-17
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A ship network dynamic routing algorithm based on vector network
Autorzy:
Zhao, J.
Fan, J.
Powiązania:
https://bibliotekanauki.pl/articles/260081.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship network
vector network
vector address
routes discovery
wireless sensor network
Opis:
In view of the characteristics of low speed mobile ship network, strong network dynamics and large signal interference, this paper proposes a low-rate mobile sensor network routing algorithm. In mobile wireless sensor networks, network topology changes frequently is a new challenge for resource constrained sensor node. Constantly updated network topology, sensor nodes need to exchange data frequently in order to maintain fresh route, resulting in sensor nodes consume a lot of energy. To solve this problem, to reduce control overhead is considered to be an effctive strategy. In this paper, we present a vector network-based dynamic routes (VNDR) scheme aims to minimize the control cost of the sensor nodes. We propose data exchange based on binary-coded vector address to reduce the control cost, moreover, we present a set of communication rules that govern the routes search procedure thereby requiring little cost of packet analysis to determine the next hop of node. VNDR performance was compared with well known scheme such as SPIN and DD. Simulation results show that, our VNDR scheme reduced the network control overhead and improved network lifetime.
Źródło:
Polish Maritime Research; 2018, S 2; 62-68
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study of Wireless Sensor Networks to Comprehend their Relevance to Different Applications
Autorzy:
Agarkhed, Jayashree
Dattatraya, Patil Yogita
Patil, Siddarama
Powiązania:
https://bibliotekanauki.pl/articles/308904.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
clustering
energy efficiency
multipath-based routing
wireless sensor network
Opis:
Wireless sensor networks (WSNs) have experienced enormous growth, both in terms of the technology used and their practical applications. In order to understand the features of WSNs that make the solution suitable for a specific purpose, one needs to be aware of the theoretical concepts behind and technological aspects of WSNs. In this paper, the significance of WSNs is illustrated, with a particular emphasis placed on their demands and on understanding researchrelated problems. A review of the literature available is presented as well. Detailed discussions concerning sensor node architecture, different types of sensors used and their relevance for various types of WSNs is presented, highlighting the need to achieve application-specific requirements without degrading service quality. Multipath and cluster-based routing protocols are compared in order to analyze QoS requirements they are capable of satisfying, and their suitability for different application areas is reviewed. This survey highlights the performance of different routing protocols, therefore providing guidelines enabling each of the routing techniques to be used, in an efficient manner, with factors such as specific network structure, protocol operation and routing path construction taken into consideration in order to achieve better performance.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 2; 3-13
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
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:
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:
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
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:
An Approach to Structural Health Monitoring of Composite Structures Based on Embedded PZT Transducers
Autorzy:
Dziendzikowski, M.
Dragan, K.
Kurnyta, A.
Kornas, Ł.
Latoszek, A.
Zabłocka, M.
Kłysz, S.
Leski, A.
Chalimoniuk, M.
Giewoń, J.
Powiązania:
https://bibliotekanauki.pl/articles/97829.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
structural health monitoring
PZT sensor network
barely visible impact damages
Opis:
One approach to developing a system of continues automated monitoring of structural health is to use elastic waves excited in a given medium by a piezoelectric transducers network. Depending on their source and the geometry of the structure under consideration elastic waves can propagate over a significant distance. They are also sensitive to local structure discontinuities and deformations providing a tool for detecting local damage in large aerospace structures. This paper investigates the issue of Barely Visible Impact Damages (BVIDs) detection in composite materials. The model description and the results of impact tests verifying damage detection capabilities of the proposed signal characteristics are presented in the paper.
Źródło:
Fatigue of Aircraft Structures; 2014, 6; 113-118
2081-7738
2300-7591
Pojawia się w:
Fatigue of Aircraft Structures
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An artificial neural networks approach to stator current sensor faults detection for DTC-SVM structure
Autorzy:
Klimkowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/1193212.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
DTC-SVM
current sensor
induction motor
detector
fault tolerant drive
neural network
Opis:
In the paper, an analysis is made of the stator current sensor fault detector based on artificial neural network for vector controlled induction motor drive system. The systems with different learning algorithms and structures are analyzed and tested in different drive conditions. Simulation results are obtained in direct torque control algorithm (DTC-SVM) and performed in MATLAB/SimPowerSystem software.
Źródło:
Power Electronics and Drives; 2016, 1, 36/1; 127-138
2451-0262
2543-4292
Pojawia się w:
Power Electronics and Drives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Innovative Multiple Attribute Based Distributed Clustering with Sleep/Wake Scheduling Mechanism for WSN
Autorzy:
Chavan, Shankar D.
Jagdale, Shahaji R.
Kulkarni, Dhanashree A.
Jadhav, Sneha R.
Powiązania:
https://bibliotekanauki.pl/articles/1844582.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
advanced distributed
energy efficient
adaptive clustering
clustering
lifetime
sleep-wake cluster head scheduling
throughput
wireless sensor network
Opis:
Wireless sensor network is a dynamic field of networking and communication because of its increasing demand in critical Industrial and Robotics applications. Clustering is the technique mainly used in the WSN to deal with large load density for efficient energy conservation. Formation of number of duplicate clusters in the clustering algorithm decreases the throughput and network lifetime of WSN. To deal with this problem, advance distributive energy-efficient adaptive clustering protocol with sleep/wake scheduling algorithm (DEACP-S/W) for the selection of optimal cluster head is presented in this paper. The presented sleep/wake cluster head scheduling along with distributive adaptive clustering protocol helps in reducing the transmission delay by properly balancing of load among nodes. The performance of algorithm is evaluated on the basis of network lifetime, throughput, average residual energy, packet delivered to the base station (BS) and CH of nodes. The results are compared with standard LEACH and DEACP protocols and it is observed that the proposed protocol performs better than existing algorithms. Throughput is improved by 8.1% over LEACH and by 2.7% over DEACP. Average residual energy is increased by 6.4% over LEACH and by 4% over DEACP. Also, the network is operable for nearly 33% more rounds compared to these reference algorithms which ultimately results in increasing lifetime of the Wireless Sensor Network.
Źródło:
International Journal of Electronics and Telecommunications; 2021, 67, 3; 437-443
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An On-Line Multiway Approach to In-Situ NDI Looking at the PZL-130TCII
Autorzy:
Dragan, K.
Dziendzikowski, M.
Kurnyta, A.
Latoszek, A.
Leski, A.
Kłysz, A.
Powiązania:
https://bibliotekanauki.pl/articles/97811.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
structural health monitoring
PZT sensor network
fatigue crack detection
full scale fatigue test
Opis:
Providing a reliable and universal Structural Health Monitoring (SHM) system allowing for remote aircraft inspections and a reduction of maintenance costs is a major challenge confronting the aerospace industry today. SHM based on guided Lamb waves is one of the approaches capable of addressing the issue while satisfying all the associated requirements. This paper presents a holistic approach to the continuous real time damage growth monitoring and early damage detection in aircraft structure. The main component of the system is a piezoelectric transducers (PZT) network. It is complemented by other SHM methods: Comparative Vacuum Monitoring (CVMTM) and Resistance Gauges at selected aircraft hot spots. The paper offers the description of damage detection capabilities including the analysis of data collected from the PZL-130 Orlik aircraft full-scale fatigue test.
Źródło:
Fatigue of Aircraft Structures; 2013, 5; 5-11
2081-7738
2300-7591
Pojawia się w:
Fatigue of Aircraft Structures
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of data aggregation methods and related issues in Wireless Sensor Networks
Autorzy:
Nels, S. Ninisha
Singh, J. Amar Pratap
Powiązania:
https://bibliotekanauki.pl/articles/2050167.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
data aggregation
wireless sensor network
WSN
clustering
cluster head
CH
cluster-based data aggregation
Opis:
Data aggregation is the process aimed at reducing the transmission count of packets being transmitted in the framework of in-network data processing. It is the data transmission model that takes the information transmitted from different nodes and generates a single data packet after finding and eliminating the redundant packets. Accordingly, this process decreases the transmission count and makes it possible to consume less energy. The major issues in data aggregation mechanism are related to reduction of latency and to energy balancing. Moreover, it is very complex to resolve the issue of packet loss, which is the failure of one or more transmitted packets to arrive at their destination due to the bad and/or congested channel conditions. The present survey involves a collection of 50 research papers dealing with the data aggregation models in wireless sensor networks (WSN). Various data aggregation methods, like the cluster-based approach, structure-free method, tree-based approach, in-network methods, and energy based aggregation model are considered in this survey, regarding the application and the energy usage involved. On the basis of the survey, the issues and drawbacks faced by the respective methodologies are highlighted. In addition, the paper presents simple statistics of the studies considered with respect to the performance measures, simulation tools, publication year, and classification of methods. The future dimensions of the respective research are supposed to be based on the challenges identified in this survey.
Źródło:
Control and Cybernetics; 2020, 49, 4; 419-446
0324-8569
Pojawia się w:
Control and Cybernetics
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
Wyświetlanie 1-15 z 102

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