| 摘要 |
<p>The invention concerns a presence detecting apparatus comprising: a body movement detecting means (4) for detecting a movement of a human body on a bed or a seat, said body movement detecting means (4) producing a signal, absence judging means (24) for judging the absence of a body on the bed or the seat when a signal level of the body movement detecting means (26) is below a second set value predetermined, presence judging means (25) for judging the presence of a body on the bed or the seat in a quiet state when the signal level is above the second set value and below a third set value predetermined, rough body movement judging means (26) for judging that the body has produced the rough body movement such as turning over on the bed or the seat when the signal level is above the third set value. <IMAGE></p> |
