| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem that the number of persons cannot be recognized, thereby unauthorized access can not be detected when the plurality of persons simultaneously pass the area of a condominium, etc. <P>SOLUTION: Weight sensors are arranged uniformly on a floor surface in a certain area. Footprint candidates are selected from sensor data of the sensors, so as to measure the number of persons. When the number of persons passing in the area is counted, the unauthorized access, such as tailgating, is detected. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
