| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive monitoring system capable of high-speed processing in addition to accurate monitoring within a target area. SOLUTION: The monitoring system includes a plurality of distance sensors 11 installed correspondingly to a plurality of monitoring object areas 6 to be monitored, the plurality of distance sensors 11 measuring distances to the corresponding monitoring object areas 6, respectively; a reference distance storage unit 25 which stores reference distances to be compared with measurement distances measured by the plurality of distance sensors 11; and a distance comparison means 22 which compares the measurement distance by each of the plurality of distance sensors 11 with the reference distance corresponding to each distance sensor 11. The plurality of monitoring object areas 6 is constituted so that the adjacent monitoring object areas 6 are overlapped, and the distance comparison means 22 calculates the height and position of a monitoring object 2 based on comparison results and monitors the monitoring object 2 present between the monitoring object area 6 and the distance sensor 11. COPYRIGHT: (C)2011,JPO&INPIT
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