The invention relates to the technical field of vehicle braking, in particular to a brake switch state judgment method and system. The brake switch state judgment method comprises the following steps: judging whether a brake switch signal is credible or not; when the brake switch signal is not credible, judging whether a fault prompt signal indicating that the brake switch has a fault is received or not; when the fault prompt signal is received, a first signal is received, and whether the first signal is smaller than a first threshold value is judged; when the first signal is smaller than the first threshold value, it is judged that the brake switch does not act; when the first signal is larger than or equal to the first threshold value, the brake switch is judged to act. When a brake switch signal is incredible, whether the brake switch has a fault or not and judgment of a first signal are added, so that the situation that when the fault that the brake switch acts but the brake switch signal is incredible occurs, a brake pedal is treaded, and a brake lamp cannot be turned on is avoided; a front vehicle brakes but a brake lamp is not turned on, so that a rear vehicle cannot judge the driving behavior of the front vehicle in time, and traffic accidents are caused.
本发明涉及车辆制动技术领域,具体涉及一种制动开关状态判断方法及系统。制动开关状态判断方法包括如下步骤,判断制动开关信号是否可信;当制动开关信号不可信时,判断是否接收到制动开关存在故障的故障提示信号;接收到故障提示信号时,接收第一信号,并判断第一信号是否小于第一阈值;当第一信号小于第一阈值时,判定制动开关无动作;当第一信号大于等于第一阈值时,判定制动开关动作。在制动开关信号不可信时,通过增加制动开关是否存在故障和第一信号的判断,以避免出现例如制动开关动作但制动开关信号不可信的故障时,踩踏制动踏板而制动灯无法点亮,前车刹车但制动灯不亮造成后车无法及时判断前车驾驶行为,导致交通事故的发生。
Method and system for judging state of brake switch
一种制动开关状态判断方法及系统
2023-06-06
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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