After investigating the advantages and disadvantages about variety kinds of wireless networks, we chose ZigBee to design the network nodes, combining the software and the hardware to realize the network communication. RSSI value is extracted by programming via three different grades of power, different range of distance and multiple measurements. We can draw the conclusion that in different distance, the power loss is different. Finally we make the chart of time-power to verify that Zigbee is a suitable, effective wireless communication method for measuring the distance in the situation with fewer nodes and shorter distance.%通过调研分析各种无线网络优缺点,根据系统特点选择使用ZigBee网络设计节点,软硬件结合实现网络通信功能,编写软件通过三个不同等级的功率、多次测量、不同范围的测量实现了RSSI( Received Signal Strength Indictor)值的提取.分析得出在不同测量距离内,传输损耗值是不同的,测量距离越小,损耗值越低,反之越高.通过测量值得出的时间功率图证明了ZigBee是有效的、适合短距离、节点较少的一种距离测量的无线组网通讯技术.
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