| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly reliable combined crime prevention sensor which can always accurately calculate a moving distance and moving speed of suspicious invader by using both a microwave sensor and an image sensor and can reduce a false report and missing report. SOLUTION: The combined crime prevention sensor comprises the microwave sensor 2 which transmits microwaves to a sensing area and detects and outputs distance information toward an object and first distance changing information in a designated period on the basis of reflected waves of the microwaves from the object existing in the sensing area, the image sensor 3 which photographs an image in the sensing area and detects and outputs moving distance information in the image indicating a moving distance on the image of the object whose movement is detected in a designated period on the basis of changes among images photographed in time series, and an operation means 4 for determining whether the object is an invader or not on the basis of the distance information, the first distance changing information, and direction change information. COPYRIGHT: (C)2006,JPO&NCIPI
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