Design and Implementation of an IoT Access Point with Repeater and Monitor Functionalities

• Main Authors: Ying-Chiao Liao, 廖英僑
• Other Authors: 張志勇
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/mz283y

碩士 === 淡江大學 === 資訊工程學系碩士班 === 102 === In internet of things (IoTs), an amount of smart objects based on ZigBee standard are used for achieving the goal of the low power consumption in communication. However, the small communication range of ZigBee devise cannot fully cover the widely region, including factory, mezzanine floor, villa, office, and so on. Therefore, the problems of limit communication range, multi-hop transmission, low signal strength, and interference result in low network performance even if each device cannot communicate with each other. Compared with ZigBee standard, Wi-Fi standard has larger communication range and better signal strength than that of ZigBee standard. Based on the above-mentioned features of Wi-Fi standard, this thesis propose an “Access Point Repeater with Monitoring Functionality” in weak-signal and multi-hop ZigBee environment. As a result, the proposed repeater not only extend the base station signal of Wi-Fi but also connect the nearby ZigBee device in local environment. Overall, the packets via Wi-Fi base station can forward to the proposed repeater and thus enhance the quality of packet transmission. In addition, the repeater is also embedded camera module to monitor the given region. Then, the snapshot of the monitoring area can be transmitted to Android smartphone by Wi-Fi standard. Consequently, the requirement in monitoring functionality for IoTs can be achieved.