The invention discloses a stable and reliable brake detection circuit which comprises a brake signal input end from a truck, the brake signal input end is connected with a resistor R125 through a line, a diode D8 is connected in parallel with the connecting line, and the anode of the diode D8 is connected with a resistor R131; the other end of the resistor R125 is connected with the base electrode of the triode Q15, and the resistor R30 is connected in parallel with the connecting line; a collector electrode of the triode Q15 is connected with a resistor R126 and a resistor R235 in parallel, the other end of the resistor R126 is connected with a system voltage SYS3.3V, a capacitor C105 is connected with a connecting line of the resistor R235 and the triode Q15 in parallel, and the other end of the resistor R235 is connected with a detection pin of the single-chip microcomputer MCU. The circuit can be applied to trucks and cars, is simple in circuit design and low in cost, is verified by a large number of mass production machines, is reliable in performance and strong in anti-interference performance, and has generalizability.
本发明公开了一种稳定可靠的刹车制动检测电路,包括来自卡车的刹车信号输入端,刹车信号输入端通过线路连接电阻R125,其连接线路上并联有二极管D8,二极管D8的阳极连接电阻R131;电阻R125的另一端与三极管Q15的基极连接,其连接线路上并联电阻R30;三极管Q15的集电极并联电阻R126和电阻R235,电阻R126的另一端接系统电压SYS3.3V,在电阻R235与三极管Q15的连接线路上并联电容C105,其电阻R235的另一端连接单片机MCU的检测脚。本电路可应用于卡车、轿车上使用,其电路设计简单、成本低廉,经过大量的量产机器验证,性能可靠,抗干扰性强,具有可推广性。
Stable and reliable brake detection circuit
一种稳定可靠的刹车制动检测电路
2022-05-13
Patent
Electronic Resource
Chinese
NTIS | 1971
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