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1. 发明申请

WO1986005235A1 CIRCUIT ARRANGEMENT FOR DETECTING CURRENT VARIATION SIGNALS 审中-公开
标题翻译：用于检测电流变化信号的电路布置
公开(公告)号：WO1986005235A1
公开(公告)日：1986-09-12
申请号：PCT/AT1986000014
申请日：1986-02-19
申请人： VOEST-ALPINE FRIEDMANN GESELLSCHAFT M.B.H. , SCHMIDT, Karl-Heinz
发明人： VOEST-ALPINE FRIEDMANN GESELLSCHAFT M.B.H.
IPC分类号： F02D05/02
CPC分类号： F02D41/28 , F02D35/0007 , F02D41/22 , Y02T10/40
摘要： The circuit is intended to the detection of current modification signals of a needle transducer (Zs) connected to a constant direct voltage source and arranged in the injection device of an internal combustion engine. The circuit is capable of detecting very low signals particularly in vehicles where the high noise level conditions are prevailing. The transducer (Zs) is mounted at the output (4) of an adjustable direct voltage source (1) and is connected to a measurement resistance (RM) connected between the output (3) of a regulation amplifier (2) and the output of the direct voltage source (1). The output (3) of the regulating amplifier (2) is connected to the input of an alternating voltage amplifier (5) with pass-band. The output of the alternating voltage amplifier (5) is connected to the input of a Schmitt trigger (7) of which the output signal (UA) is representative of the variations of the sensor current (Is)
摘要翻译：该电路旨在检测连接到恒定直流电压源并布置在内燃机的注射装置中的针换能器（Zs）的当前修改信号。该电路能够检测非常低的信号，特别是在高噪声电平条件普遍的车辆中。传感器（Zs）安装在可调节直流电压源（1）的输出端（4）处，并连接到连接在调节放大器（2）的输出（3）和测量电阻直流电压源（1）。调节放大器（2）的输出（3）通过带通连接到交流电压放大器（5）的输入端。交流电压放大器（5）的输出连接到施密特触发器（7）的输入端，输出信号（UA）代表传感器电流（Is）的变化，

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