Temat: Sensor Network - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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

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Skocz do pozycji: 2.

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

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Skocz do pozycji: 3.

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

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Skocz do pozycji: 4.

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

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Skocz do pozycji: 5.

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

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Skocz do pozycji: 6.

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

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Skocz do pozycji: 7.

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

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Skocz do pozycji: 8.

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

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Skocz do pozycji: 9.

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

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Skocz do pozycji: 10.

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

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