| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce a manufacturing cost of a system while maintaining security of the system in an entry and exit limiting system limiting entry and exit to a management object area by people other than permitted people. <P>SOLUTION: The entry and exit limiting system 1 is provided with a processing part 25 detecting intrusion and outputting a detection result when an infrared sensor 43 is detecting existence of a person in a monitoring area, and a radio wave transmitting and receiving part 31 can not receive a response signal from an authentication card 10 carried by a management object person. The authentication card 10 is configured to have a timer 11a counting the time to a preset operation time, a short circuit part 15 changing a setting of whether or not to allow entry and exit to the management object area when it is the operation time, and a resonance part 16 sending a response signal by radio when it is set by the short circuit part 15 to allow entry and exit, and a call signal sent by the radio wave transmitting and receiving part 31 is received. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
