摘要
地磁传感器是一种动态检测地磁场变化的感应设备。文中提出了基于地磁传感器的一种车辆检测方法,通过对地磁检测器所采集的数据进行预处理和波形特征提取来进行车辆信息的检测。利用安装在路面上的2个地磁感应器,和基于动态基值的波形特征提取算法,对车辆流量和车辆速度及车型等信息进行有效的检测,试验结果表明基于地磁感应的车辆检测方法的准确率高达98%。
Magnetometer detector is a kind of detection equipment which can dynamically detect the changes of magnetic field.A method of vehicle detection was proposed based on this magnetometer detector.The preprocessing and the steps of feature of the waveform extraction of the collection data were introduced.The method to detect the speed and the type of the vehicle effectually based on the dynamic threshold value was discussed through using 2 Magneto resistive sensors which were fitted in the road.The experimental results show that the accuracy of the vehicle detection method based on magneto resistive sensors can be as high as 98%.
出处
《交通信息与安全》
2011年第3期43-46,共4页
Journal of Transport Information and Safety
关键词
检测器
波形特征
地磁感应效应
智能交通系统
vehicle detector
waveform features
magneto effect
intelligent transport system
