| 摘要 |
PROBLEM TO BE SOLVED: To provide a combination sensor system which can accurately determine interference in a sensor section, even in outdoor use. SOLUTION: The combination sensor system comprises the sensor section 1, provided with a first sensor (MW sensor) 3 and a second sensor (PIR sensor) 4, a moving distance detection circuit 21 for detecting a moving distance M1 of a human body P, on the basis of a first detection signal d1 from the first sensor 3, a distance detection circuit 20 for detecting the distance D1 from the sensor section 1 to the human body P on the basis of the first detection signal d1, and an interference decision circuit 22 which determines that interference has occurred and outputs an interference detection signal a2, when the detected moving distance M1 is not smaller than a predetermined moving distance M0 and when the detected distance D1 is not larger than a predetermined distance D0. COPYRIGHT: (C)2007,JPO&INPIT
|
