| 摘要 |
PROBLEM TO BE SOLVED: To efficiently and inexpensively monitor a monitoring area and to previously prevent a burglar event. SOLUTION: A galvano mirror 25 is driven and a moving object N invaded into a monitoring area E is speedily scanned by making light abut on the moving object N from a two-dimensional direction. Whether moving object information on the distance of the moving object and the tilting angle of the galvano mirror 25, which are previously set, and moving object information on the distance of the moving object and the tilting angle of the galvano mirror 25, which are obtained by an operation based on raw information of the moving object, are within a prescribed range or not is identified by an identification part 31. When they are within the prescribed range, the moving object N is considered to be a human being and a measure for calling a guard man is taken. When they are not within the prescribed range, he is considered to be not the human being and he is ignored.
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