GAS CUTOFF SYSTEM

摘要

PROBLEM TO BE SOLVED: To improve usability while securing safety when a consumer is using a gas appliance when a drop state of a battery voltage is detected. SOLUTION: This gas cutoff system is provided with: a battery power source means 2; a cutoff means 3; a voltage detection means 5; a voltage abnormality determination means 13 for determining that the detected voltage is abnormal when it is below a predetermined value to output a cutoff signal; a cutoff signal delay means 14 for delaying the cutoff signal until no flow is detected in outputting the cutoff signal; a voltage alarm output means 15 for outputting voltage drop alarm indication in outputting the cutoff signal; a time measuring means 7 for measuring a predetermined time when the detected voltage is below the predetermined value; a restoration means 8 for outputting a signal for restoring the cutoff means 3; a restoration prohibition means 9 for prohibiting the input of the restoration signal to output a cutoff signal to the cutoff means 3 when it is determined by the time measuring means 7 that the predetermined time has elapsed or abnormality is detected during the predetermined time measurement; and an annunciation means 4 for displaying and annunciating the voltage drop by the alarm signal from the voltage alarm determination means 14. COPYRIGHT: (C)2007,JPO&INPIT