公开(公告)号：US4734673A

公开(公告)日：1988-03-29

申请号：US840477

申请日：1986-03-14

申请人： Youichi Murata ,  Fumioki Shibata

发明人： Youichi Murata ,  Fumioki Shibata

IPC分类号： F02N11/08 ,  F02N15/00 ,  G01R31/00 ,  G07C5/00 ,  B60Q1/00 ,  G08B21/00

CPC分类号： F02N11/0848 ,  G01R31/006 ,  G07C5/00 ,  F02N2200/044

摘要： Apparatus for detecting the start and stop of an engine starter motor includes a sensor, an amplifier, a comparator, and a monostable multivibrator. When a starter motor starts and stops, magnetic flux around the starter motor varies greatly. The sensor senses this varying magnetic flux and produces a voltage signal corresponding to the magnetic flux variation. The voltage signal is amplified by the amplifier so that the amplified voltage signal is fed to the comparator. When the voltage signal fed to the comparator is greater than the reference voltage of the comparator, a pulse signal is fed to the multivibrator, and in turn the multivibrator is triggered to output detecting signals corresponding to the start or stop of the starter motor. A warning lamp or buzzer may be energized by the detecting signal from the multivibrator.

摘要翻译： 用于检测发动机起动电动机的起动和停止的装置包括传感器，放大器，比较器和单稳态多谐振荡器。 起动马达启动和停止时，起动马达周围的磁通量变化很大。 传感器感测到这种变化的磁通量并产生对应于磁通量变化的电压信号。 电压信号由放大器放大，放大的电压信号被馈送到比较器。 当馈送到比较器的电压信号大于比较器的参考电压时，脉冲信号被馈送到多谐振荡器，并且多谐振荡器被触发以输出对应于起动电动机起动或停止的检测信号。 警报灯或蜂鸣器可能由多谐振荡器的检测信号通电。