公开(公告)号：US5460028A

公开(公告)日：1995-10-24

申请号：US341230

申请日：1994-12-05

申请人： Peter Werner ,  Hermann Hemminger ,  Beate Glockner ,  Gerard Byrne ,  Stephan Johne

发明人： Peter Werner ,  Hermann Hemminger ,  Beate Glockner ,  Gerard Byrne ,  Stephan Johne

IPC分类号： G01N27/409 ,  F02D41/14 ,  F02D41/24 ,  G01N27/26 ,  F02B3/08

CPC分类号： F02D41/28 ,  F02D41/1493 ,  F02D41/1456

摘要： The invention is directed to a circuit for conditioning the output signal of a measuring sensor for further processing in a control apparatus which has a fixed ground potential which does not necessarily correspond to the ground potential of the measuring sensor. A conditioning circuit is provided which can be integrated on a chip and has the following characteristics. The conditioning circuit compensates for the fluctuating ground offset between exhaust gas probe and control apparatus ground when utilizing an exhaust gas probe burdened with a potential. The circuit arrangement includes an external circuit which can be changed to influence the input signal to the conditioning circuit. With this changeable external circuit, the output signal of the circuit arrangement can be so modified that the control apparatus outputs an output voltage with offset and an output voltage without offset. In the case of the external circuit for an output voltage without offset, an offset is impressed upon the input voltage which is then again subtracted at the output with an amplification factor so that the absolute value of the impressed offset has no influence on the output voltage.

摘要翻译： 本发明涉及一种用于调节测量传感器的输出信号的电路，用于在具有固定接地电位的控制装置中进一步处理，该固定接地电位不一定对应于测量传感器的接地电位。 提供了可以集成在芯片上并具有以下特征的调理电路。 调理电路补偿了排气探头与控制装置接地之间波动的接地偏移，并利用负载有潜力的排气探头。 电路装置包括可以改变以影响调节电路的输入信号的外部电路。 利用这种可变的外部电路，可以对电路装置的输出信号进行如此修改，使得控制装置输出具有偏移的输出电压和没有偏移的输出电压。 在没有偏移的输出电压的外部电路的情况下，在输入电压上施加偏移，然后在放大系数的输出处再次减去输入电压，使得被施加的偏移的绝对值对输出电压没有影响 。