Browsing by Author "Cheng, Kai-Yang"

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iMouse: An integrated mobile surveillance and wireless sensor system
(2007-06-01)
Tseng, Yu-Chee
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Wang, You-Chiun
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Cheng, Kai-Yang
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Hsieh, Yao-Yu
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資訊工程學系
With their environment-sensing capability, wireless sensor networks can enrich human life in applications such as healthcare, building monitoring, and home security. The iMouse system integrates WSN technologies into surveillance technologies to support intelligent mobile surveillance services. The authors suggest several ways to improve or extend iMouse. One option is to facilitate mobile sensor navigation by, for example, integrating localization schemes to guide mobile sensors instead of using color tapes. A second option is to exploit coordination among mobile sensors, especially when they're on the road.
Using event detection latency to evaluate the coverage of a wireless sensor network
(2007-10-15)
Wang, You-Chiun
;
Cheng, Kai-Yang
;
Tseng, Yu-Chee
;
資訊工程學系
;
Department of Computer Science
A wireless sensor network (WSN) consists of many tiny and low-power devices deployed in a sensing field. One of the major tasks of a WSN is to monitor the surrounding environment and to detect events occurring in the sensing field. Given an event appearing in a WSN, the event detection latency is to model the time that it takes for the WSN to be aware of the event. In this work, we analyze the latency using a probabilistic approach under an any-sensor-detection and a k-sensor-detection models, where k > 1 is an integer. Such an analysis can be used as an index to evaluate a WSN's coverage and thus can help guide the deployment of a WSN. We also develop simulations to verify our analytical results. (C) 2007 Elsevier B.V. All rights reserved.