| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable an output of a long warning signal even after a forced warming signal is stopped by an erroneous judgment, and use conveniently. SOLUTION: A human body is detected only by a heat wire sensor part 1 before first confirmation period elapses just after power-on, and a warning signal is stopped unless the heat wire sensor part 1 outputs a human body detection signal within the first confirmation period, and a second confirmation period starts from stop of this warning signal, and it is confirmed whether or not the heat wire sensor part 1 outputs a human body detection signal before the second confirmation period elapses. Unless the heat wire sensor part 1 outputs the human body detection signal within the second confirmation period, environmental wave receiving data are acquires and updated, and if the heat wire sensor part 1 outputs the human body detection signal within the second confirmation period, an off-delay period is set to a first off-delay period to output immediately a warning signal, and then if it can be confirmed that the heat wire sensor part 1 does not output the human body detection signal within the first off-delay period, the environmental wave receiving data is acquired and updated, and also an off-delay period is set to a second off-delay period.</p> |
