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Using cable-based mobile sensors to assist environment surveillance

Using cable-based mobile sensors to assist environment surve...

引用

ieee Internatonal conference on Mobile Adhoc and sensor systems (MASS)

作者： Shanshan Li Shaoliang Peng Mo Li Xiangke Liao National University of Defense Technology China Hong Kong University of Science and Technology Hong Kong China

there have been works done by utilizing mobile sensors as supplementary to assist the sensing coverage for the static sensor nodes in possible event happenings. Most of them assume that the mobile sensors are equipped with unlimited mobility and thus can move anywhere within the monitored field. However, the assumption of unlimited mobility has its own limitations and is unrealistic in many practical applications. Alternatively, we consider pre-deploying cables within the monitored field so that mobile sensors move along cables to destinations. In this case, we can far more relax the requirements on the mobile sensors and achieve more realistic usage despite of the complex field landforms. We find that existing cables deployed in the tunnel are perfect carriers for deploying mobile nodes which help get rid of the complex circumstance in the underground tunnel.

关键词： sensors Mobile communication Delay Monitoring Approximation algorithms Mobile computing Wireless sensor networks

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Evaluation of Antenna-Integrated 315MHz Transmitter for Smart Microsensors

Evaluation of Antenna-Integrated 315MHz Transmitter for Smar...

引用

5th international conference on Networked Sensing systems

作者： Kim, Jong-Wan Takao, Hidekuni Sawada, Kazuaki Ishida, Makoto Toyohashi Univ Technol Dept Elect & Elect Engn Toyohashi Aichi Japan

ISBN: (纸本)9784907764319

this paper presents the evaluation of the prototype of an integrated smart microsensor system that has been developed to monitor the motion and vital signs of humans in various environments. Integration of radio frequency transmitter (RF) technology with complementary metal-oxide-semiconductor/micro electro mechanical systems (CMOS/ MEMS) microsensors is required to realize the wireless smart microsensors system. the essential RF components such as a voltage controlled RF-CMOS oscillator (VCO), spiral inductors and an integrated antenna have been fabricated and evaluated experimentally. the fabricated RF transmitter and integrated antenna were packaged with subminiature series A (SMA,) connectors, respectively. For the impedance (50 Omega) matching, a bond-wire type inductor was developed. Integrated techniques for the RF transmitter by CMOS compatible processes have been successfully developed. After matching, the measured emission power at distance of 5m from RF transmitter was 37dBm (76.1dB mu V/m). the radiation patterns for the prototype of smart microsensor is close approximately an isotropic antenna. Also, for the 300-MHz band application, the prototype of smart microsensor has been successfully demonstrated.

关键词： Smart sensor RF transmitter integrated antenna CMOS/MEMS

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DHB-KEY: An efficient key distribution scheme for wireless sensor networks

DHB-KEY: An efficient key distribution scheme for wireless s...

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ieee Internatonal conference on Mobile Adhoc and sensor systems (MASS)

作者： Tony Chung Utz Roedig Infolab21 Lancaster University UK

Real-world deployments of wireless sensor networks require secure communication. In many application cases it is sufficient to provide message authentication at the sink. To implement this requirement using symmetric ciphers, keys shared between each sensor node and the sink have to be established and kept fresh during network operation. this paper presents a key distribution scheme based on the well known elliptic curve Diffie-Hellman key exchange mechanism that allows us to fulfil the previously outlined requirements efficiently. the DHB-KEY scheme requires only the distribution of a single sink-initiated broadcast message to set individual keys on all sensor nodes. thus, DHB-KEY has a low complexity and preserves scarce resources such as bandwidth and energy. In the paper we present a protocol specification based on the DHB-KEY scheme and its implementation for the well known TinyOS platform. A physical intrusion detection system in an office building is used to evaluate the protocol implementation. the evaluation shows that DHB-KEY is practical in real-world deployments.

关键词： Security Wireless sensor networks Peer to peer computing Protocols Cryptography Message authentication Buildings

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Content Management and Replication in the SNSP: A distributed Service-Based OS for sensor Networks

Content Management and Replication in the SNSP: A Distribute...

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Consumer Communications and Networking conference, CCNC ieee

作者： Jana van Greunen Jan Rabaey Department of Electrical Engineering University of California Berkeley CA USA

this paper presents data management and replication techniques used by the SNSP, a distributed operating system for sensor networks. three replication schemes, a deterministic, a distributed probabilistic and an adaptive observation based scheme are compared. the first two were adapted from related work and the latter was developed for the SNSP. Results indicate that the distributed scheme has the best performance in terms of total cost per data access as well as increased data availability. When access cost without overhead is considered, the adaptive algorithm performs the best, but its overhead is higher because data items are replicated independently of accesses.

关键词： Content management sensor systems Operating systems Costs Financial advantage program Telecommunication traffic Availability Hardware Resource management Bandwidth

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A phonological expression for physical movement monitoring in body sensor networks

A phonological expression for physical movement monitoring i...

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ieee Internatonal conference on Mobile Adhoc and sensor systems (MASS)

作者： Hassan Ghasemzadeh Jaime Barnes Eric Guenterberg Roozbeh Jafari Embedded Systems and Signal Processing Laboratory Department of Electrical Engineering University of Technology Dallas USA

Monitoring human activities using wearable wireless sensor nodes has the potential to enable many useful applications for everyday situations. the deployment of a compact and computationally efficient grammatical representation of actions reduces the complexities involved in the detection and recognition of human behaviors in a distributed system. In this paper, we introduce a road map to a linguistic framework for the symbolic representation of inertial information for physical movement monitoring. Our method for creating phonetic descriptions consists of constructing primitives across the network and assigning certain primitives to each movement. Our technique exploits the notion of a decision tree to identify atomic actions corresponding to every given movement. We pose an optimization problem for the fast identification of primitives. We then prove that this problem is NP-Complete and provide a fast greedy algorithm to approximate the solution. Finally, we demonstrate the effectiveness of our phonetic model on data collected from three subjects.

关键词： Humans Clustering algorithms Hidden Markov models Monitoring Training Construction industry Biomedical monitoring

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Mobility-assisted Spatiotemporal Detection in Wireless sensor Networks

Mobility-assisted Spatiotemporal Detection in Wireless Senso...

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ieee international conference on distributed computing systems

作者： Guoliang Xing Jianping Wang Ke Shen Qingfeng Huang Xiaohua Jia Hing Cheung So Department of Computer Science City University of Hong Kong

ISBN: (纸本)9781424431748

Wireless sensor networks (WSNs) deployed for mission-critical applications face the fundamental challenge of meeting stringent spatiotemporal performance requirements using nodes with limited sensing capacity. Although advance network planning and dense node deployment may initially achieve the required performance, they often fail to adapt to the unpredictability of physical reality. this paper explores efficient use of mobile sensors to address the limitations of static WSNs in target detection. We propose a data fusion model that enables static and mobile sensors to effectively collaborate in target detection. An optimal sensor movement scheduling algorithm is developed to minimize the total moving distance of sensors while achieving a set of spatiotemporal performance requirements including high detection probability, low system false alarm rate and bounded detection delay. the effectiveness of our approach is validated by extensive simulations based on real data traces collected by 23 sensor nodes.

关键词： Wireless sensor networks Object detection sensors Data fusion Ganglia observational data Network planning

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Improving Energy Conservation Using Bulk Transmission over High-Power Radios in sensor Networks

Improving Energy Conservation Using Bulk Transmission over H...

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international conference on distributed computing systems

作者： Cigdem Sengul Mehedi Bakht Albert F. Harris Tarek Abdelzaher Robin Kravets ASAP INRIA France UIUC USA CReSIS-KU USA

Low power radios, such as the CC2420, have been widely popular with recent sensor platforms. this paper explores the potential for energy savings from adding a high-power, high-bandwidth radio to current sensor platforms. High-bandwidth radios consume more power but significantly reduce the time for transmissions. Consequently, they offer net savings in total communication energy when there is enough data to offset wake-up energy overhead. the analysis on energy characteristics of several ieee 802.11 radios show that a feasible crossover point exists (in terms of data size) after which energy savings are possible. Based on this analysis, we present a bulk data transmission protocol for dual radio systems. the results of simulations and prototype implementation show significant energy savings at the expense of introducing acceptable delay.

关键词： ieee 802.11 Standards Receivers Routing Communication cables Energy consumption Protocols Data communication

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Comparing Symmetric-key and Public-key based Security Schemes in sensor Networks: A Case Study of User Access Control

Comparing Symmetric-key and Public-key based Security Scheme...

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ieee international conference on distributed computing systems

作者： Haodong Wang Bo Sheng Chiu C. Tan Qun Li College of William and Mary Williamsburg VA 23187-8795 USA

ISBN: (纸本)9781424431748

While symmetric-key schemes are efficient in processing time for sensor networks, they generally require complicated key management, which may introduce large memory and communication overhead. On the contrary, public-key based schemes have simple and clean key management, but cost more computational time. the recent progress of elliptic curve cryptography (ECC) implementation on sensors motivates us to design a public-key scheme and compare its performance with the symmetric-key counterparts. this paper builds the user access control on commercial off-the-shelf sensor devices as a case study to show that the public-key scheme can be more advantageous in terms of the memory usage, message complexity, and security resilience. Meanwhile, our work also provides insights in integrating and designing public-key based security protocols for sensor networks.

关键词： Access control Security Public key Cryptography Remote sensing Elliptic curve cryptography Memory management

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Integrating sensor Streams in pHealth Networks

Integrating Sensor Streams in pHealth Networks

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international conference on Parallel and distributed systems (ICPADS)

作者： Mark Roantree Donall McCann Niall Moyna Interoperable Systems Group University of Dublin Dublin Ireland School of Health and Human Performance University of Dublin Dublin Ireland

Personal Health (pHealth) sensor networks are generally used to monitor the well being of both athletes and the general public to inform health specialists of future and often serious ailments. the problem facing these domain experts is the scale and quality of data they must search in order to extract meaningful results. By using peer-to-peer sensor architectures and a mechanism for reducing the search space, we can, to some extent, address the scalability issue. However, synchronisation and normalisation of distributed sensor streams remains a problem in many networks. In the case of pHealth sensor networks, it is crucial for experts to align multiple sensor readings before query or data mining activities can take place. this paper presents a system for clustering and synchronising sensor streams in preparation for user queries.

关键词： Heart rate Biomedical monitoring sensor phenomena and characterization sensor systems Wireless sensor networks Data mining Collaboration Universal Serial Bus Humans Peer to peer computing

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An access-control model for Body sensor Networks using authorisation policies.

An access-control model for Body Sensor Networks using autho...

引用

ieee/EMBS international Summer School on Medical Devices and Biosensors

作者： Eleftheria Katsiri Distributed Software Engineering Department of Computing Imperial College London UK

the authorspsila previous work discusses a policy-based approach for autonomous management of access control in body-sensor networks using the concept of a Self-Managed-Cell (SMC). this paper discusses an implementation on this approach that permits the specification and enforcement of policies that facilitate management of access control on the SMC resources allowing for the grouping of resources in domains and roles.

关键词： Body sensor networks Authorization Sliding mode control Biosensors Access control Patient monitoring Resource management Biomedical monitoring Peer to peer computing Insulin

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