Development of Context-Aware Telecare Gateway over Wireless Sensor Network

• Main Authors: Yi-An Chen, 陳奕安
• Other Authors: Wen-Tzeng Huang
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/9t2un9

碩士 === 國立臺北科技大學 === 電腦與通訊研究所 === 96 === In recent years, Wireless Sensor Networks (WSN) has been already widely used to perceive the human activity environments. Although WSN is limited for its power electricity factor, it is still one of hot topics to be studied. Under highly growing and continuing demand over the world, how to design an effectively telecare system is one of the quite hot discussion topics. Hence, in this thesis, based on WSN system, we not only development an embedded gateway but also first propose a high-performance Client-Server structure to access the database. The ARM9 hardware platform, embedded Linux, and Java mechanism are employed in our gateway design. Our embedded platform owns the properties of low-cost, cross-platform, small size, and low-power consumption. There are two parts, Client and Server, in our gateway design, which uses the distribution method to process the input information such that this can effectively increase the system performance. The Bi-direction communication function is one major function and to be realized in this system. Therefore, uses can enable the telecare devices by a remote equipment with no place and time limitation; when not needing to use, uses can set the telecare devices as a sleep mode for power saving reason. Such design not only can reduce the working cycle of WSN but also increase the life-span of WSN. Moreover, since our gateway owns the bi-direction communication function, it can offer context-aware situation by each other and then provide the more suitable and real-time services for persons to be looked after. From our results, we know that the access performance of our proposed Client-Server structure is fast about 5~500 times on average than Direct Networking structure to access the database.