The embodiment of the invention relates to a pin switching circuit of an OBD interface and vehicle detection equipment, and the circuit comprises a signal on-off module which is connected with a pin of the OBD interface. The signal bus is connected with the signal on-off module, and the signal on-off module is switched between an on state and an off state so as to control whether a signal is transmitted between the pin of the OBD interface and the signal bus or not; a channel on-off module, wherein the channel on-off module is connected with the signal bus; the signal transceiver group is used for receiving or sending at least one vehicle signal, and the signal transceiver group is connected with the channel on-off module; and the channel on-off module is switched between an on state and an off state so as to control whether the signal is transmitted between the signal transceiver group and the signal bus or not. The method can adapt to various vehicle fault diagnosis protocols, and supports the simultaneous use of various different diagnosis protocols to communicate with the OBD system of the vehicle.
本申请实施例涉及一种OBD接口的引脚切换电路和车辆检测设备,包括信号通断模组,信号通断模组与OBD接口的引脚连接;信号总线,信号总线与信号通断模组连接,信号通断模组在导通或断开状态之间切换,以控制信号是否在OBD接口的引脚和信号总线之间传输;信道通断模组,信道通断模组与信号总线连接;和信号收发器组,信号收发器组用于接收或发送至少一种车辆信号,信号收发器组与信道通断模组连接;信道通断模组在导通或断开状态之间切换,以控制信号是否在信号收发器组和信号总线之间传输。本发明可以适配多种车辆故障诊断协议,且支持同时使用多种不同的诊断协议与车辆的OBD系统进行通信。
Pin switching circuit of OBD interface and vehicle detection equipment
OBD接口的引脚切换电路及车辆检测设备
12.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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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