| 摘要 |
PURPOSE:To obtain high reliability when the detection signal of a sensor is read in by providing the interface circuit of simple constitution for the sensor which has superior noise resistance characteristics. CONSTITUTION:Sensors 59, 64, and 161 which output a high-potential signal or low-potential signal selectively corresponding to the state of a body to be detected are connected to a signal processor 820 and the interface circuit 830 outputs the output signals of the sensors to a signal processor 820; inverter IC2 and IC3 which make the potentials of the high-potential signals of the sensors higher than the potential of the signal input system of the signal processor 820 and convert the high-potential signals outputted by the sensors into high-potential inverted signals to the same potential with the signal input system of the signal processor 820 and the high-potential signals outputted by the sensors into low-potential inverted signals lower than the high-potential inverted signals. |
