Browsing by Author "Yang, Su-Hen"

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An Adaptive Routing Protocol for Health Monitoring with a Sensor Network and Mobile Robot
(2010)
Yang, Su-Hen
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Song, Kai-Tai
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電機工程學系
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Department of Electrical and Computer Engineering
In this paper, we developed an adaptive route selection algorithm for a Mobile Ad-hoc Network (MANET). This algorithm has been realized and implemented for health monitoring applications with sensor nodes and a mobile robot. The health care devices include a body-pose estimation module, and a SpO(2) and ECG sensor module. These sensor modules wore on individuals and the mobile robot itself form a mobile sensor network. Conventional Ad-hoc On-demand Distance Vector (AODV) looks for a route which has the smallest hop count, but the route with the smallest hop count might not be the best route. In this paper we propose a novel routing protocol that features to combine signal strength and battery level into account, and uses fuzzy inference to search for a route with stable RF signals. Simulation results show that the packet delivery ratio increases from 81% to 90%. In practical experiment on a Zigbee MANET, the packet delivery ratio improves from 66% to 94%. The proposed MANET has also been experimented in practical health care application by integrating a pose estimation module, a SpO(2) sensor and a mobile robot.
INTRUDER DETECTION SYSTEM AND METHOD
(2009-12-10)
Song, Kai-Tai
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Lin, Chia-Hao
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Lin, Chih-Sheng
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Yang, Su-Hen
This invention is an intruder detection system which integrates wireless sensor network and security robots. Multiple ZigBee wireless sensor modules installed in the environment can detect intruders and abnormal conditions with various sensors, and transmit alert to the monitoring center and security robot via the wireless mesh network. The robot can navigate in the environment autonomously and approach to a target place using its localization system. If any possible intruder is detected, the robot can approach to that location, and transmit images to the mobile devices of the securities and users, in order to determine the exact situation in real time.
Mobile Robot Intruder Detection Based on a Zigbee Sensor Network
(2008)
Lin, Chia-How
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Yang, Su-Hen
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Chen, Hong-Tze
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Song, Kai-Tai
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電控工程研究所
This paper presents an intruder detection system, which consists of a Zigbee sensor network and an autonomous mobile robot Multiple Zigbee sensor modules installed in the environment can detect intruders and abnormal conditions. Sensor nodes transmit intrusion alarm to the monitoring center as well as the mobile robot via Zigbee wireless mesh network. The robot can navigate in the environment autonomously and approach to a target place using onboard localization system. If any possible intruder is detected, the robot immediately moves to that location and transmits images to remote mobile devices such as PDA or smart phone of security guards and users, in order to determine and response to the situation in real time.