The invention relates to an air pressure alarm method for a commercial vehicle air brake system. The method comprises the steps that a front loop air pressure value, a rear loop air pressure value anda parking and hanging loop air pressure value are obtained; respectively comparing with a service brake low-pressure alarm threshold value, a service brake high-pressure alarm threshold value, a parking and hanging loop normal pressure upper limit value and a parking and hanging loop normal pressure lower limit value; and outputting an over-low air pressure signal, or a normal air pressure signal, or a low air pressure signal of the parking and hanging loop, or a high air pressure signal of the parking and hanging loop, or an over-high air pressure signal according to the comparison result. According to the invention, monitoring and related alarm methods for the parking and hanging loop are added, and judgment logic for freaking down of the pressure limiting valve is also added, so that when the pressure limiting valve and the parking and hanging loop break down, correct judgment and alarm can be made in time, and the driving safety is greatly improved; an alarm method for complex conditions caused by high-voltage faults is added, and the situations of false alarm and missing alarm are greatly reduced.
本发明涉及商用车气制动系统气压报警方法,包含步骤:获取前回路气压值、后回路气压值、驻挂回路气压值;与行车制动低压报警阈值、行车制动高压报警阈值、驻挂回路正常压力上限值、驻挂回路正常压力下限值分别对比;根据对比结果输出气压过低信号,或气压正常信号,或驻挂回路气压偏低信号,或驻挂回路气压偏高信号,或气压过高信号。本发明增加了对驻挂回路的监测及相关报警方法,也增加了限压阀发生故障时的判断逻辑,从而当限压阀和驻挂回路发生故障时,能及时做出正确的判断并报警,大幅提升了行车的安全性;增加了对由于高压故障带来的复杂情况下的报警方法,极大降低了误报、漏报的情况发生。
A air pressure alarm method for commercial vehicle air brake system
商用车气制动系统气压报警方法
2020-10-20
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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