The invention discloses a two-way switch type brake pedal asynchronous fault diagnosis method and device. The method comprises the steps that S1, the conduction states of a first switch and a second switch of the brake pedal are obtained; S2, a first treading state and a second treading state of the brake pedal are determined according to the conduction states of the first switch and the second switch; S3, whether the first treading state is consistent with the second treading state or not is judged; S4, if not, a main cylinder pressure value of a vehicle brake main cylinder is obtained, and the main cylinder pressure value is compared with a preset pressure threshold value; S5, when the main cylinder pressure value is larger than the pressure threshold value, the duration time when the main cylinder pressure value is larger than the pressure threshold value is obtained, and the duration time is compared with a preset time threshold value; and S6, when the duration time is larger thanthe time threshold value, the brake pedal asynchronous fault is judged to occur. The occurrence of misinformation asynchronous faults caused by the problems of manufacturing and mounting precision isavoided, and the diagnosis result of the asynchronous faults of the two brake pedals is accurate.

    本发明公开了一种两路开关型制动踏板的不同步故障诊断方法及装置,方法包括:S1:获取制动踏板的第一开关与第二开关的导通状态;S2:根据第一、二开关的导通状态,确定制动踏板的第一、二踩踏状态;S3:判定第一踩踏状态与第二踩踏状态是否一致;S4:若不一致,获取车辆制动主缸的主缸压力值,并比对主缸压力值与预设的压力阈值;S5:当主缸压力值大于压力阈值时,获取主缸压力值大于压力阈值的持续时间,并比对持续时间与预设的时间阈值;S6:当持续时间大于时间阈值时,判定发生制动踏板不同步故障。本发明避免由于制造和安装精度的问题造成的误报不同步故障的发生,对两路制动踏板不同步故障诊断结果准确。


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    Title :

    Two-way switch type brake pedal asynchronous fault diagnosis method and device


    Additional title:

    两路开关型制动踏板不同步故障诊断方法及装置


    Contributors:

    Publication date :

    2020-09-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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