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Base on the analysis of traditional long-range medical healthcare system, the human body healthcare system used in the family is introduced in this paper. According to the requirements of family health monitor system, the paper compares several kinds of wireless communication technology which uses in the family, The system is presented to combine the short-range wireless communication technology Zigbee...
This paper presents a smart ZigBee indoor security system based on the small-scale fading effect of RF signals. The received signal strength in a wireless network stays stable with low variances in a closed indoor environment. The movement of objects will induce a small-scale fading effect, resulting in dramatic changes of the signal strength. The main idea is to deploy a ZigBee network in the detection...
In this work, a network based on wireless sensor network has been developed to monitor streetlight power cable. The sensor nodes mount on the streetlight pole and detect the cable voltage. Once a sensor node finds the voltage gone, it sends alarm information to the transformer station over other sensor nodes and then transmits to the control center through GPRS network. The central computer processes...
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