The invention discloses a vehicle speed determination method, device and equipment and a medium, the method is executed by a vehicle control unit, and the method comprises the steps that the GPS signal state of an automobile data recorder is detected; if the state of the GPS signal is normal, acquiring a GPS vehicle speed in an automobile data recorder through a CAN bus, outputting a vehicle speed signal according to the GPS vehicle speed, and determining a first correction coefficient as a target correction coefficient according to the GPS vehicle speed; if the state of the GPS signal is abnormal, the speed of the sensor is calculated according to the reduction ratio of a rear axle of the vehicle, the rolling radius of a tire, the number of target wheel teeth, the target correction coefficient and the pulse signal period collected by the speed sensor, and a speed signal is output according to the speed of the sensor. According to the embodiment of the invention, the continuity, accuracy and reliability of the vehicle speed information in the vehicle driving process can be improved.

    本发明公开了一种车速确定方法、装置、设备及介质,由整车控制器执行,所述方法包括:检测行车记录仪的GPS信号状态;若所述GPS信号状态正常,则通过CAN总线获取行车记录仪中GPS车速,并根据所述GPS车速输出车速信号,且根据所述GPS车速确定第一修正系数作为目标修正系数;若所述GPS信号状态异常,则根据车辆后桥减速比、轮胎滚动半径,靶轮齿数和所述目标修正系数,以及车速传感器采集的脉冲信号周期计算传感器车速,并根据所述传感器车速输出车速信号。本发明实施例可以提高车辆行驶过程中车速信息的连续性、准确性和可靠性。


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    Title :

    Vehicle speed determination method and device, equipment and medium


    Additional title:

    一种车速确定方法、装置、设备及介质


    Contributors:
    LI WEIDONG (author) / LI CHENGYUE (author) / CAO ZHEN (author)

    Publication date :

    2024-12-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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