| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a human body detection device capable of accurately detecting the presence/absence of a user in a detection area, with a simple device structure while saving energy. <P>SOLUTION: In a human body detection device 1, a Doppler signal producing portion 4 executes a first producing mode which produces at least two or more Doppler signals at a second periodic interval sufficiently short as compared with a first cycle, in every first cycle, and an action determining portion 6 compares the amplitude strength and first threshold values of the plurality of the Doppler signals in every first cycle to execute a first determination mode which determines whether a user exists in the detection area or not. <P>COPYRIGHT: (C)2013,JPO&INPIT |
