Patent ID: 7068026

Claim:
A sensor signal circuit comprising: a voltage signal transmitting section having a sensor for transmitting a result of detection as a voltage signal; a voltage signal receiving section for receiving the voltage signal; a cable for connecting the voltage signal transmitting section and the voltage signal receiving section to define a voltage signal transmitting side and a voltage signal receiving side; a voltage/current converter provided in the voltage signal transmitting side, the voltage/current converter having a noninverting voltage/current converter for converting the voltage signal to a noninverted current signal and an inverting voltage/current converter for converting the voltage signal to an inverted current signal, the noninverted and inverted current signals corresponding to the voltage of the voltage signal; a voltage converter provided in the voltage signal receiving side for converting the noninverted and inverted current signals to a voltage to obtain the voltage signal; the cable comprising: a feed-in cable for transmitting the noninverted current signal from the noninverting voltage/current converter to the voltage converter; and a feed-back cable for transmitting the inverted current signal returning from the voltage converter to the inverting voltage/current converter.