摘要
针对现有无线定位系统中,定位引擎算法固化导致应用缺少灵活性、成本高的问题,提出一种集成ZigBee无线收发器和微控制器的CC2430为核心器件,并配以终端软件的集中式无线传感器网络定位系统方案。该方案利用软件方法实现较高的定位精度,降低对硬件的要求,减少了无线传感器定位系统的成本。无线定位网络主要由协调器节点、参考节点和盲节点组成,系统采集盲节点到各参考节点的信号强度指示值(RSSI),值通过协调器RS232接口与上位机实现通信,并根据不同的应用环境由上位机选择合适的RSSI定位算法,实时获取盲节点位置。实验表明该方案切实可行有效。
Aiming at the problem of high cost and lacking flexibility in application caused by location algorithm burned to chip in the existing wireless location system,the design of concentrated wireless sensor netWorks location system is proposed,which used the CC2430 with integrated ZigBee wireless transceiver and micro-contronller as the core,combined with terminal software. The design makes uses of software method to realize higher location accuracy and reduce the demand of the hardware ,the cost of wireless sensor networks location system is decreased. The wireless location system was composed of coordinator node,reference node and blind node,and collected RSSI （received signal strength indicator）value of blind node between each reference node,then RSSI value was transmitted to the up machine through the RS232 interface of coordinator. The appropriate RSSI location algorithm was chosen according to different application environment, and the blind node position was acquired in real time. The results of test indicate that the design is feasible and valid.
出处
《电子设计工程》
2010年第5期84-86,共3页
Electronic Design Engineering
