The invention discloses a collision signal detection and drive circuit, which belongs to the technical field of automobile electric appliances and comprises a signal induction circuit, a signal conversion circuit, a signal latch circuit and a drive circuit. Wherein the signal induction circuit is used for converting an acquired ignition current signal into an induction voltage signal and outputting the induction voltage signal to the signal conversion circuit; the signal conversion circuit is used for converting the induced voltage signal into a low-level signal and inputting the low-level signal into the signal latch circuit; the signal latch circuit outputs the detected low-level signal as a high-level signal, and inputs the high-level signal to the driving circuit; the driving circuit adopts the triode as a switch of the normally-closed relay, and a normally-closed contact of the normally-closed relay is connected with a whole vehicle high-voltage interlocking loop. According to the invention, the high-voltage interlocking loop can be cut off under the condition that the original air bag of the vehicle is not changed with risks, so that the effect of high-voltage power-off of the whole vehicle is realized.
本发明公开了一种碰撞信号检测及驱动电路,属于汽车电器技术领域,包括:信号感应电路、信号转换电路、信号锁存电路以及驱动电路;其中,所述信号感应电路将采集的点火电流信号转换成感应电压信号输出至所述信号转换电路;所述信号转换电路将所述感应电压信号转换成低电平信号,并将所述低电平信号输入至所述信号锁存电路;所述信号锁存电路将检测到的所述低电平信号输出为高电平信号,并将所述高电平信号输入至所述驱动电路;所述驱动电路采用所述三极管作为所述常闭继电器的开关,所述常闭继电器的常闭触点连接整车高压互锁回路。本发明能够在不对原车气囊做任何有风险的改动情况下,达到切断高压互锁回路从而实现整车高压下电的效果。
Collision signal detecting and driving circuit
一种碰撞信号检测及驱动电路
2023-10-20
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / H01H Elektrische Schalter , ELECTRIC SWITCHES / H03K PULSE TECHNIQUE , Impulstechnik |
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