The invention relates to a geomagnetic differential vehicle detection method and system based on a single geomagnetic sensor. The problems that a current environment baseline algorithm is low in stability and poor in adaptability, and sensors such as a camera and a radar are high in cost and affected by weather are mainly solved. According to the method, geomagnetic sensors are arranged on a lane line on one side of a single lane at equal intervals, sensor sensing nodes collect geomagnetic data, three-axis first-order differential signals are calculated and filtered, the vehicle existence probability corresponding to the first-order differential signals is calculated through the Bayesian probability, and then vehicles are detected according to the vehicle existence probability. The uncertainty of magnetic field data is considered, and a more reliable detection result is provided. And finally, vehicle passing information is uploaded to an intelligent traffic cloud platform through a base station, so that accurate and real-time monitoring of road traffic flow information by the platform is realized.
本发明涉及一种基于单地磁传感器的地磁差分车辆检测方法及系统,主要解决当前环境基线算法稳定性低,适应性差并且摄像机和雷达等传感器成本高,受天气影响等问题。本发明方法将地磁传感器等间距的部署在单车道一侧的车道线上,传感器感知节点对地磁数据进行采集,计算三轴一阶差分信号并进行滤波,通过贝叶斯概率对一阶差分信号对应的有车概率进行计算,进而根据有车概率对车辆进行检测,考虑到了磁场数据的不确定性,提供更加可靠的检测结果。最后将车辆经过信息通过基站上传至智能交通云平台,实现平台对道路车流信息的准确、实时监控。
Geomagnetic differential vehicle detection method and system based on single geomagnetic sensor
一种基于单地磁传感器的地磁差分车辆检测方法及系统
2024-06-25
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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