| 摘要 |
<P>PROBLEM TO BE SOLVED: To automatically set and change an external output delay time of a gas leak alarm based on a signal from a gas meter. <P>SOLUTION: This device for automatically switching and setting an external output delay time in the gas leak alarm is constituted of: an unconnected detection signal detection part 1 which detects an unconnected detection signal to be periodically transmitted from a meter; a power source answer request signal detection part 2 which detects a power source answer request signal to be periodically transmitted from the meter; a pattern table 3 which associates a pattern to be formed by combination of each signal of the unconnected detection signal and the power source answer request signal with the external output delay time; a pattern determination part 4 which determines whether or not a pattern to be formed from two detection results to be brought by the unconnected detection signal detection part 1 and the power source answer request signal detection part 2 is the pattern defined in the pattern table 3, and extracts the external output delay time corresponding to the determined pattern; and an external output delay time output part 5 which automatically outputs the external output delay time extracted by the pattern determination part 4. <P>COPYRIGHT: (C)2012,JPO&INPIT |
