| 摘要 |
<p>PROBLEM TO BE SOLVED: To sense the location of a human body and the moving direction by installing guides divided into far and near, left and right and centers on three super-transmission infrared ray sensing elements. SOLUTION: The infrared ray radiated from a human body is converged through a Fresnel lens 11, the focusing to the infrared ray sensing part 17 within an infrared ray sensor part 14 is performed for the infrared ray, the infrared ray is divided by a guide part 12 according to directions (left side, right side, center and far and near), and the infrared ray entering from the pertinent areas is concentrated on the horizontal and long distance sensing elements 17a and 17b or a a short distance sensing element 17c which are located at the pertinent areas. Thus, the infrared ray sensed according to each area passes the impedance conversion part 20 for the infrared ray sensing part 17 and generates a sensor sensing signal. This signal is amplified by a signal processing means 15 and is outputted after an A/D conversion and a comparison analysis. Therefore, the appearance and movement of the human body exist, an output is generated from the infrared ray sensing element which is pertinent to the appearance area of the human body, and the location of the human body, the moving direction and the active amount become possible to be detected.</p> |
