The invention discloses a TPMS multi-vehicle-speed signal coexistence processing and failure judgment method. The method comprises the following steps that: a vehicle speed message signal is receivedin real time with a refresh cycle taken as a time interval; vehicle speed data are obtained from the received vehicle speed message signal, and the maximum vehicle speed is taken as the current vehicle speed; and the loss time of each vehicle speed message signal is calculated, and if the loss time of a certain vehicle speed message signal is greater than a set time threshold, it is considered that a vehicle speed sensor corresponding to the vehicle speed message signal is invalid. According to the method of the invention, the failure of the TPMS vehicle speed sensor can be automatically detected. The maximum vehicle speed is used as the current vehicle speed, and even if part of vehicle speed signals are lost, stable vehicle speed signals can still be obtained.
本发明公开一种TPMS多车速信号并存的处理及失效判定方法。所述方法包括:以刷新周期为时间间隔实时接收车速报文信号;从接收到的车速报文信号中获取车速数据,以最大的车速作为当前车速;计算每个车速报文信号丢失的时间,如果某车速报文信号丢失的时间大于设定的时间阈值,则认为所述车速报文信号对应的车速传感器失效。本发明能够实现TPMS车速传感器失效的自动检测。通过以最大的车速作为当前车速,即使有部分车速信号丢失,仍然能够获得稳定的车速信号。
TPMS multi-vehicle-speed signal coexistence processing and failure judgment method
一种TPMS多车速信号并存的处理及失效判定方法
2020-09-15
Patent
Electronic Resource
Chinese
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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