The invention discloses a geomagnetic vehicle detection method of a multi-transient finite-state machine, which belongs to the field of vehicle detection, and comprises the following steps of: preprocessing an original geomagnetic signal which is acquired by a geomagnetic sensor and contains noise, obtaining a filtered signal from the original geomagnetic signal by using a translation invariant wavelet de-noising method; and a variance sequence of the original geomagnetic signal is calculated by using a sliding window, the variance sequence and the filtered signal are input into a multi-transient state machine, and the state machine outputs a final vehicle detection result. An original noisy signal is preprocessed by adopting a translation invariant wavelet denoising method, a multi-transient state machine vehicle detection algorithm based on a variance signal is provided, and an experimental result performed in a standard parking lot shows that compared with a classical vehicle detection algorithm, the algorithm provided by the invention has the advantages that the accuracy is greatly improved, and the detection accuracy is greatly improved. Theoretical support is provided for establishing an intelligent parking system and improving the vehicle management efficiency, in addition, the algorithm can also accurately detect special conditions such as weak magnetic vehicles, and the application range is wider.
本发明公开了一种多暂态有限状态机的地磁车辆检测方法,属于车辆检测领域,该方法包括对地磁传感器采集到的含噪声的原始地磁信号进行预处理,对所述原始地磁信号使用平移不变量小波去噪方法得到滤波后信号,并利用滑动窗口计算得出原始地磁信号的方差序列,将所述方差序列和滤波后信号输入多暂态状态机,状态机输出最终的车辆检测结果。本发明采用平移不变量小波去噪方法对原始含噪信号进行预处理,并提出一种基于方差信号的多暂态状态机车辆检测算法,在标准停车场中进行的实验结果表明,本发明所提出的算法相比于经典的车辆检测算法在准确率上有较大提升,为建立智慧停车系统、提升车辆管理效率提供了理论支撑,此外,本算法对于弱磁性车辆等特殊情况也能准确检测,适用范围更加广泛。
Geomagnetic vehicle detection method of multi-transient finite-state machine
一种多暂态有限状态机的地磁车辆检测方法
2023-09-12
Patent
Elektronische Ressource
Chinesisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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