为提高车辆检测准确度和系统抗干扰能力,降低系统成本,减少对路面的破坏,提出了基于地磁感应的无线车辆检测系统的设计研究方法。与传统车辆检测器相比,该检测器采用各向异性磁阻传感器进行设计,尺寸小,易于集成。检测器对采集的数据进行处理和特征提取,并通过无线网络系统将数据传输给上位机,无需布线,易于施工。试验结果表明,系统工作稳定可靠,不受环境路况天气等外在因素的影响,与传统车辆检测系统相比,在性能、实时性、成本、寿命、维护等方面整体上有很大的优越性。%In order to improve the accuracy of vehicle detection and system noise immunity,lower system cost and reduce the damage on the road,a design and study method of wireless vehicle detecting system based on geomagnetic induction was proposed.Compared with the traditional vehicle detector,the detector is easily integrated which is designed by using anisotropic magneto resistive sensor.The detector size is small.The collection data processed and feature extracted were performed by detector.The data was transferred to the host computer through the wireless network system.The system is no wiring and easy to construct.The experiments indicate that the system worked stable and reliable and is not affected by road environment and weather factors.The system is superior to the traditional vehicle detection system on performance,real-time,cost,life circle,maintenance and so on.
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