METHOD FOR MONITORING ON STATE OF SENSOR

摘要

PROBLEM TO BE SOLVED: To make it possible to highly accurately monitor the ON state of a sensor by simple circuit constitution. SOLUTION: The ON states of sensors connected to an every time monitoring part 101 are successively monitored, and after the end of monitoring the ON states of sensors for eight blocks, the ON states of sensors connected to a normal monitoring part 102(1) are monitored. After monitoring the ON states of all the sensors connected to the normal monitoring part 102 (1), monitoring operation is returned to the every time monitoring part 101 to monitor the ON states. Then the ON states of the sensors are monitored in the order of the every time monitoring part 101, a normal monitoring part 104(3), the monitoring part 101, a normal monitoring part 105(4), the monitoring part 101, a normal monitoring part 106(5), the monitoring part 101, a normal monitoring part 107(6), the monitoring part 101, and a normal monitoring part 108(7).