基于磁阻传感器的无线车辆检测器的设计

摘要

According to the phenomenon of the disturbances of earth's magnetic field caused by passing vehicles,anisotropic magnetoresistive sensor using and combining with Zig Bee,a wireless vehicle detector is designed. The principle of vehicle detection is described and an experimental prototype is designed and produced. The results of experiments demonstrate that the wireless vehicle detector can determine the presence of vehicles and their driving directions, and estimate their speed. The wireless vehicle detector has certain accuracy and practicality.%根据车辆经过会引起地磁场扰动这一现象,应用各向异性磁阻传感器并结合zig Bee技术,设计了一种无线车辆检测器.阐述了车辆检测原理,设计制作了实验样机.道路实测实验表明:该设计能够判断车辆的有无、行进方向,并可以进行车速估计,具有一定的准确性和实用性.