| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a system allowing detection of presence/absence of a person intruding into a monitoring area, and allowing easy distinction of whether or not the detected person is permitted with the intrusion into the monitoring area. <P>SOLUTION: In an intrusion detection system, an electric wave intensity of a wireless signal 102 from an access point 101 for a wireless LAN is measured in a wireless signal monitor 105 disposed in a position most distant from the access point 101 inside the monitoring area 104, it is decided that an intruder 103 has intruded into the monitoring area 104 when falling than a predetermined electric wave intensity threshold value, and the wireless signal monitor 105 notifies an alarm terminal 107 via a LAN/WAN 106. The alarm terminal 107 accesses the access point 101, acquires terminal information peculiar to a terminal 109 carried by the intruder 103, accesses a terminal management server 108 previously registered with terminal information peculiar to a terminal carried by a person permitted with the intrusion, and decides that the intruder 103 is an unpermitted illegal intruder when the acquired terminal information is not registered. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
