| 摘要 |
<p>PURPOSE:To securely prevent a human body from being misdetected owing to environmental conditions, etc., by properly selecting an output which matches an environmental change between the outputs of >=2 kinds of human body detectors and judging the detection of the human body. CONSTITUTION:When a passive infrared-ray type human body detector 7 and a light beam type human body detector 8 are provided as the human body detector and a thermometer 3 is provided as an environmental condition detecting means, a human body is detected only with the output signal of the detector 7 if the temperature data of the thermometer 3 is less than a specific value. Further, when one human body detector outputs a detection signal, the detection of the human body is discriminated speedily. Further, the human body is detected only with the output signal of the light-beam type human detector 8. When the detectors 7 and 8 output detection signals at the same time, the detection of the human body is discriminated. Further, when an illuminance detector or rainfall detector 5 is provided as an environmental change detecting means, the human body is detected only with the output signal of the passing infrared-ray type human body detector 7 on condition that illuminance data is less than specific specific value and the detection is performed in nighttime or in a rainfall state.</p> |
