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International conference on information, Communications and Signal processing

作者： Wei Kuang Lai Mei-Tso Lin Kai-Ting Yang Department of Computer Science and Engineering National Sun Yat-sen University Kaohsiung Taiwan

ISBN: (纸本)9781479904327

Wireless sensor network nowadays has been applied to a wide range of applications. However, there are still some challenges to apply sensor networks to practical applications, such as size constraint, cost constraint, and power constraint. All those constraints would become stricter in applying to Body sensor Network (BSN), which motivates scholars to develop more compact sensors with reasonable maintenance fees so as to carry by users or even embed into users' bodies. Under the constraints of size and cost, the battery size is strictly restricted accordingly. Thereupon power consumption becomes more and more essential to make BSN realistic. Therefore, we propose a novel architecture of BSN in this paper, which reduces the regular power consumption of BSN so that the device lifetime and network reliability can be significantly improved. The proposed architecture has following advantages: (1) it reduces redundant data transmissions without influencing the accuracy of the system. (2) By reducing unnecessary data transmissions and optimizing routing path, it simultaneously reduces the power consumption and prolongs the network lifetime. (3) It is feasible and highly applicable to many applications.

关键词： Power demand Body sensor networks Base stations Routing Wireless communication Batteries

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Poster abstract - ASWP: A long-term WSN deployment for environmental monitoring

Poster abstract - ASWP: A long-term WSN deployment for envir...

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International Symposium on information processing in sensor networks (IPSN)

作者： Miguel Navarro Tyler W. Davis Yao Liang Xu Liang Department of Computer and Information Science University of Pittsburgh

ASWP testbed, a long-term wireless sensor network (WSN) deployment for environmental monitoring, is presented. This testbed integrates 42 MICAz nodes that implement a periodic sampling application for external sensors exposed to a forested nature reserve at the Audubon Society of Western Pennsylvania (ASWP), USA. It has been running for the past two years using TinyOS-based platforms and the commercially available routing software XMesh. Network performance analysis indicates that the critical impact due to the outdoor environment and node physical failures significantly reduced the network yield when long-term periods were considered. In particular, it is found that an over-used routing path across the network was responsible for most of the packet retransmitted and dropped in ASWP. This preliminary work intends to provide a useful reference point for WSN research and development targeted towards outdoor WSNs for long-term deployments.

关键词： Wireless sensor networks Environmental monitoring Educational institutions sensors Abstracts Computers Routing

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On optimal periodic sensor scheduling for field estimation in wireless sensor networks

On optimal periodic sensor scheduling for field estimation i...

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IEEE Global conference on Signal and information processing (GlobalSIP)

作者： Sijia Liu Makan Fardad Engin Masazade Pramod K. Varshney Department of Electrical Engineering and Computer Science Syracuse University Syracuse NY USA Department of Electrical and Electronics Engineering Yeditepe University Istanbul Turkey

We consider the problem of finding the optimal time-periodic sensor schedule for field estimation in wireless sensor networks. The sensors are subject to resource constraints in the form of a limit on the number of times each sensor can be activated over one period. A correspondence between active sensors and the nonzero columns of the estimator gain matrix is established. We formulate an optimization problem which seeks the optimal periodic estimator gain matrix that minimizes the error covariance over one period, subject to the sensor resource constraints. The optimization problem is combinatorial in nature, and we apply the alternating direction method of multipliers (ADMM) to find its locally optimal solutions. Numerical results are provided to illustrate the effectiveness of the proposed method.

关键词： Schedules Frequency measurement Covariance matrices Silicon Optimization Equations Estimation

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Streaming the sound of smart cities: Experimentations on the smartsantander test-bed

Streaming the sound of smart cities: Experimentations on the...

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2013 IEEE International conference on Green Computing and Communications and IEEE Internet of Things and IEEE Cyber, Physical and Social Computing, GreenCom-iThings-CPSCom 2013

作者： Pham, Congduc Cousin, Philippe University of Pau LIUPPA Laboratory France Easy Global Market France

ISBN: (纸本)9780769550466

Smart Cities have emerged as an efficient infrastructure to contribute to so-called global sensing or situation-awareness applications. One example of large scale deployment of sensors in the city is the SmartSantander test-bed. Most of the deployment so far propose traditional scalar physical measures such as temperature or luminosity for a number of environment-related applications. The EAR-IT project moves a step further and proposes large-scale "real-life" experimentations of intelligent acoustics for supporting high societal value applications. One scenario that will be demonstrated is an on-demand acoustic data streaming feature for surveillance systems and management of emergencies. In this paper, we will present experimentations on streaming encoded acoustic data on low-resources devices. We will highlight the main sources of delays assuming no flow control nor congestion control to determine the best case performance level and will demonstrate that streaming acoustic data can be realized in a multi-hop manner on the SmartSantander infrastructure. © 2013 IEEE.

关键词： sensor networks

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Proceedings of the 2010 6th International conference on intelligent sensors, sensor networks and information processing, ISSNIP 2010

Proceedings of the 2010 6th International Conference on Inte...

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2010 6th International conference on intelligent sensors, sensor networks and information processing, ISSNIP 2010

ISBN: (纸本)9781424471768

The proceedings contain 55 papers. The topics discussed include: exploration of adaptive filters for target tracking in the presence of model uncertainty;comparative study of RPL-enabled optimized broadcast in wireless sensor networks;developing low-cost intelligent wireless sensor networks for aquatic environments;low cost prototyping system for sensor networks;developing low-cost intelligent wireless sensor networks for aquatic environments;low cost prototyping system for sensor networks;RHA: a robust hybrid architecture for information processing in wireless sensor networks;a reactive geographic routing protocol for wireless sensor networks;minimizing the operational cost of chemical sensor networks;multifunction array lidar network for intruder detection, tracking, and identification;induction motor condition monitoring using industrial wireless sensor networks;and performance analysis of IEEE 802.15.4 MAC protocol for WSNs with ACK frame transmission under unsaturated traffic conditions.

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Parallax Visualization Plug-in Toolset for Pursuer WAMI Data

Parallax Visualization Plug-in Toolset for Pursuer WAMI Data

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conference on Airborne Intelligence, Surveillance, Reconnaissance (ISR) Systems and Applications X

作者： Mayhew, Christopher A. Mayhew, Craig M. Forgues, Mark B. Vis III Imaging Inc Vienna Vienna Austria

ISBN: (纸本)9780819495044

Effective use of intelligence, surveillance, and reconnaissance (ISR) data gathered by unmanned aerial vehicle (UAV) missions is vital to US Military operations. The 2006 Geospatial Intelligence (GEOINT) Basic Doctrine includes the following statements: (a) A primary purpose of geospatial products has always been to provide visualization of operational spaces and activity patterns of all sizes and scales, ranging from global and regional level to cities and even individual buildings. (b) A picture is simply the fastest way to communicate spatial information to a customer. Parallax Visualization (PV) technologies have been introduced, which: (1) use existing UAV sensor data, (2) provide critical alignment software tools, and (3) produce autostereoscopic (automatic depth perception) ISR work products. PV work products can be distributed across military networks and viewed on standard unaided displays. Previous evaluations have established that PV of ISR full motion video (FMV) data presents three-dimensional information in an obvious and immediate manner, thus literally adding a new dimension to the basic picture goal as set out by the GEOINT doctrine.(1)

关键词： Photovoltaics Visualization Intelligence systems sensors Image visualization 3D image processing Image enhancement Unmanned aerial vehicles Video Surveillance

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Study of wireless sensor network applications in network optimization

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sensors and Transducers 2013年第10期157卷 180-189页

作者： Li, Haigang School of information and Electrical Engineering China University of Mining and Technology China

Because of the rapid development of wireless sensor network, it widely applied in all areas of life, in-depth study of the technology will also explore the potential application of more in-depth. The main research of WSN technology in some environment in the real world information acquisition and processing technology, it realizes the intercommunication of the real world and the Internet world, opened the human WSN network era. WSN network through the digital world com. Human concepts inherent information world and explore the objective facts, from the inquiry from change the people and things in nature, the data are the basic objects interactively;the sensor node has sensing effect in direct contact with the objective environment, continuously enhance the practical function of virtual networks, but also increase the capacity of human understanding of the objective world;through the real-time sensing and found the state change monitoring target, at the same time the collection of data processing, the processing of useful information through the wireless transmission mode is transmitted to a data collection center or client. It will make the development and wide application in various fields of social life are more intelligent and modernization. Although its development still in an immature stage, Tan of many problems still has not obtained the very good solution, research work on WSN is far from over. In this paper the concept and system structure of wireless sensor network analysis began to design, application system based on wireless sensor network monitoring farmland use temperature and humidity ZigBee as an example to study the development process of application system for wireless sensor networks. © 2013 IFSA.

关键词： Zigbee

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Haptic Feedback in Endovascular Tele-Surgery Simulation through Vasculature Phantom Morphology Changes

Haptic Feedback in Endovascular Tele-Surgery Simulation thro...

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IEEE World Haptics conference (WHC)

作者： Tercero, Carlos R. Najdovski, Zoran Ikeda, Seiichi Nahavandi, Saeid Fukuda, Toshio Nagoya Univ Dept Micronano Syst Engn Nagoya Aichi 4648601 Japan Deakin Univ Ctr Intelligent Syst Geelong Vic 3217 Australia

ISBN: (纸本)9781479900886;9781479900879

The introduction of robotics technology within endovascular surgical procedures has realised accurate catheter navigation and reduced surgeon irradiation. Insufficient force information from the catheter remains a limitation for significant improvement in the performance of these procedures. While recent developments of catheter tip-force measurement sensors have witnessed a notable outcome, packaging complexities and sensor size constraints limit their application. This work presents an approach to catheter tip-force measurement during endovascular surgery simulation. Image processing and photoelasticity are utilized to measure arterial stress and morphological deformation in a carotid artery segment model. Deformation is measured in real-time and conveyed to the user as haptic feedback during tele-operation of a robotic catheter insertion system. A preliminary single user study was completed to realise the potential of force feedback as it is correlated to the level of deformation and stress in the artery model. The results of this haptic feedback are compared with experimental results of the same operator manually inserting the catheter, and also using a computer graphical-user-interface to control the catheter insertion system.

关键词： haptics tele-surgery photoelastic stress analysis

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DECENTRALIZED LOCALIZATION USING FINGERPRINTING AND KERNEL METHODS IN WIRELESS sensor networks

DECENTRALIZED LOCALIZATION USING FINGERPRINTING AND KERNEL M...

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European Signal processing conference

作者： Sandy Mahfouz FarahMourad-Chehade Paul Honeine Joumana Farah Hichem Snoussi Institut Charles Delaunay (CNRS) Université de Technologie de Troyes Troyes France Department of telecommunications Faculty of engineering Université Saint-Esprit de Kaslik Lebanon

ISBN: (纸本)9781479936878

sensors localization has become an essential issue in wireless sensor networks. This paper presents a decentralized localization algorithm that makes use of radio-location fingerprinting and kernel methods. The proposed algorithm consists of dividing the network into several zones, each of which having a calculator capable of emitting, receiving and processing data. By using radio-information of its zone, each calculator constructs, by means of kernel methods, a model estimating the nodes positions. Calculators estimates are then combined together, leading to final position estimates. Compared to centralized methods, this technique is more robust, less energy consuming, with a lower processing complexity.

关键词： decentralized processing fingerprinting localization machine learning wireless sensor networks Wireless sensor networks Fingerprinting kernel method Distributed processing Decentralized Seeds Calculators sensors Artificial Intelligence Machine Learning Radio

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An analysis on the effects of cluster leadership rotation among nodes using least temperature routing protocol

An analysis on the effects of cluster leadership rotation am...

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2013 International conference on Future information and Communication Engineering, ICFICE 2013

作者： Encarnacion, Nico Yang, Hyunho Department of Information and Telecommunication Engineering Kunsan National University 558 Daehak-ro Gunsan-si Jeollabuk-do 573-701 Korea Republic of

ISBN: (纸本)9789400765153

The area of body sensor networks has recently attracted many researchers due to its potential to revolutionize medicine. These sensors are usually implanted inside the human body and communicate among themselves. In the process of receiving, processing or transmitting data, these devices produce heat. The temperature produced by these sensor nodes might damage tissues surrounding the devices if exposed for a prolonged period of time. This paper seeks to improve and evaluate two protocols - Least Temperature Routing and Adaptive Least Temperature Routing protocol - by implementing clustering as well as a leadership rotation algorithm that was also previously proposed. The researchers used Castalia to simulate a basic BAN cluster composed of 6 nodes. To simulate all nodes sending data to one sink node, a throughput application was used. Simulations with leadership rotation showed significantly lower energy consumption compared to a set up with no leadership rotation. © 2013 Springer Science+Business Media Dordrecht.

关键词： Routing protocols

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