| Summary: | 碩士 === 中原大學 === 電子工程研究所 === 100 === On widely use of Internet and mobile communication technologies, the population can get easier to communicate to others in the digital era. And the rapid development of smart phones allows users to all kinds of situations for accessing to a variety of Internet services. In this study, we implement a system to locate the user position both in indoor and outdoor environment and monitor them. This system is implemented based on Android OS and combines GPS outdoor positioning and Wi-Fi indoor positioning technology. A PHP server is as well as build for data storage and response to carer’s query. A functionality called “safe area” is designed and implemented, allowing system to determine whether the user leaves a predefined safe range. If the user leaves, an alarm function will be activated to inform the carer so that the carer can handle the event. This system has the potential to be extended to diverse territories, including the elderly and children stray detection, route tracing out the trajectory of travelers, disability action guidance systems, etc.
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