摘要
为了在基于ZigBee标准的消防报警网络中实现对无线节点的定位,研究设计了一种使用接收信号强度指示(RSSI)值来估算目标位置的定位方法。采用一个目标节点确认周围存在的参考节点的数据采集机制,通过对适当数目的参考节点测得的RSSI值进行处理,从而实现对目标节点的定位。通过实验,验证了该数据采集和位置估算方法的有效性。结果表明,当节点密度设为0.32个/m2时,可将位置估计误差控制在2m以内。
In order to realize the localization of wireless notes in fire alarm network based on ZigBee standard, a localization method used the value of receive signal strength indicator（RSSI） to evaluate the targets＇ location was researched and designed. It used a data collecting mechanism that one target node affirmed the reference notes ex- isting around, by processing the measured RSSI values of an appropriate number of reference nodes to achieve the localization of targets. Through experiments, the validity of the data collecting and location evaluating method were good. The results indicated that the positon estimation error was within 2 m when the density of nodes was set to 0. 32 nodes/m^2.
出处
《低压电器》
北大核心
2007年第24期22-25,29,共5页
Low Voltage Apparatus
