中文摘要：

针对传统无线节点定位算法中到达时间测距算法（TOA测距），需要大量的硬件支出来实现节点的时间同步的，以此来实现节点测距，从而实现节点定位的问题，这里通过无线微处理器JN5121与一种全新的基于信息时差的距离测算方法的结合，构建了一种全新的基于Zigbee协议的无线监测、定位网络；经系统运行实验表明：系统不需实现各个节点的时间同步，减少系统能耗，工作性能稳定，满足低密度、低精度、低成本的无线网络需求。

英文摘要：

As traditional TOA Ranging need a lot of hardware expenditures to achieve the node time synchronization, combining JN5121 wireless microcontroller and a new Distance Calculation Method based on information lag, we construct a new wireless monitoring, positioning network based on Zigbee Protocol, Experiments show the new system needn＇ t to achieve the node time synchronization, have low power consumption and stable performance, It meet the Low--density, low--accuracy, low--cost wireless network＇ s demand.