The invention provides a vehicle collision detection method and system based on feature time domain matching, and the method comprises the steps: S1, obtaining a high-frequency data packet uploaded in real time through employing a self-adaptive data sampling algorithm; s2, local anomaly detection: judging whether a local anomaly point exists or not, and when the local anomaly point exists, performing multi-dimensional feature processing on the data to obtain a feature set; s3, performing feature matching through the constructed historical feature database, and calculating a similar distance; s4, obtaining a minimum similar distance, inputting the minimum similar distance into the collision evaluation model, and outputting a collision detection result; the system comprises at least one device end, a collision detection end and a historical feature database. According to the invention, data is acquired through an adaptive data acquisition algorithm, data acquisition pressure is reduced, feature extraction and fusion are carried out through different dimensions, the problem of single feature extraction dimension is solved, matching detection is carried out through construction of a historical feature database, and the accuracy of vehicle collision detection is improved.

    本发明提供了一种基于特征时域匹配的车辆碰撞检测方法及系统,方法包括S1:采用自适应数据采样算法,获取实时上传的高频数据包;S2:局部异常检测,判断是否有局部异常点,当存在局部异常点时,对数据进行多维度特征处理,获得特征集合;S3:通过构建的历史特征数据库进行特征匹配,计算相似距离;S4:获得最小相似距离输入到碰撞评估模型中输出碰撞检测结果;系统包括至少一个设备端、碰撞检测端和历史特征数据库。本发明通过自适应数据采集算法采集数据,减少数据采集压力,通过不同维度进行特征的提取和融合,解决了特征提取维度单一问题,并通过构建历史特征数据库进行匹配检测,提高车辆碰撞检测的精确度。


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    Title :

    Vehicle collision detection method and system based on feature time domain matching


    Additional title:

    一种基于特征时域匹配的车辆碰撞检测方法及系统


    Contributors:
    TANG YI (author) / DING WENZHONG (author) / CHEN JIANBO (author)

    Publication date :

    2022-04-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G06K Erkennen von Daten , RECOGNITION OF DATA / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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