三轴AMR 车辆检测器的车型分类设计实现

随着城市机动车数量的不断增加，城市交通向智能交通方向的快速发展，传统 的车辆检测器已经不能满足智能交通对交通状况反映的要求. 车辆检测器的车型分类功 能成为检测器发展的趋势，针对目前AMR 车辆检测器弱化车型结构对磁场强度影响的 问题，设计了一种新型的AMR 车型识别检测器.单个检测器可以采集三个方向地磁变化 量，结合一个高精度的时间模块，可以获得磁场强度在立体三维空间的变化，丰富了采集 信息.通过比较常见的车型分类算法优缺点，采用DAG-SVM 进行车型分类. 实验测试的 结果表明，该检测器可以有效地对车辆进行分类.

Design and Implementation of Vehicle Classification Based on 3-axis AMR Vehicle Detector

With the increasing number of motor vehicle, urban transport is widely assisted by intelligent transportation system (ITS),. Traditional vehicle detector cannot meet the requirements of ITS’s reflection on traffic condition, the function of vehicle classification has received great attentions. Current AMR vehicle classification detector classify vehicle by the length of vehicle but the vehicle structure. To solve this problem, this paper designs a new kind vehicle classification detector. A single detector can collect three directions’geomagnetic variation, and magnetic field strength changes in three-dimensional space can be gained with the combination of a high-precision time module, which enriches the collected information. By comparing the pros and cons of common vehicle classification algorithms, DAG-SVM is selected to classify vehicles. The experimental test results prove the effectiveness of vehicle classifier detector designed in this paper.