WSN节点超声波测距技术研究

摘要

In wireless sensor network, ranging between nodes is one of the key technologies of positioning algorithm based on ranging. In order to reduce the node costs and improve ranging accuracy, the ultrasonic non-reflective ranging method is proposed to estimate the distance between the two nodes. The ultrasonic ranging experiment was carried out in laboratory and a teaching corridor with hardware of ultrasonic transceiver module which was made by our laboratory, and JN5148 platform. The results show that the accuracy of this ranging system is good. So it is possible to provide reliable distance information for the localization of WSN.%节点间测距是无线传感器网络中基于距离的定位算法的关键技术之一,为了降低节点成本,提高测距精度,提出了采用超声波非反射式测距技术实现WSN节点的测距.采用实验室自制的超声波收发模块与JN5148开发板作为硬件平台,在实验室与教学楼走廊进行了测距实验.实验结果表明,该测距系统可以达到较高的测距精度,能够为无线传感器网络的定位提供可靠的距离信息.