基于地磁感应的车辆检测方法的研究

Vehicle Detection Method Based on Magnetoresistive Sensors

地磁检测器是一种新型的利用磁场变化的车辆信息检测设备。文中提出了基于这种地磁检测器的交通流信息检测方法,通过对地磁检测器采集的数据进行预处理和特征提取,利用2个地磁感应器,应用基于阈值的车辆判别方法,进行了车流量的实时在线的实验检验,实验检验结果表明,基于地磁感应的车辆检测方法的准确率达到了96%。

Magnetometer detector is a new type of vehicle information detection equipment based on the changes of magnetic field. A method of traffic flow information detection was proposed based on this magnetometer detector. The preprocessing and the steps of feature extraction of the coilection data were introduced. The method to distinguish the vehicle based on threshold value was discussed by using 2 magnetoresistive sensors. A real-time experimental test of the traffic flow was conducted. The experimental results show that the accuracy of the vehicle detection method based on magnetoresistive sensors can be as high as 96%.