| 摘要 |
PURPOSE:To monitor an invasion without switching the mode by temporarily displaying an unmanned state after detecting the state by using an ID discriminating device and starting the monitoring of invasion when card reading is performed while the unmanned state is displayed. CONSTITUTION:When an ID card is read by means of a card reader 1B on the entrance side and the collated result of the ID number of the card is 'OK', a controller 3 erects the in-room flag of the holder of the card and controls the temporary unlocking of an electric lock 2b. When another card reader 1A on the exit side reads the ID card and the collated result of the ID number is 'OK', controller 3 cancels the in-room flag of the holder and controls the temporary unlocking of the lock 2b. When all persons left the room and the in-room flags of the persons are canceled, the controller 3 makes the monitor lamp 1Bd of the card reader 1B on the entrance side to flicker for a prescribed period of time. When the last person leaving the room inserts his ID card into the card reader 1B and the ID number collated result of the card is 'OK', the controller 3 shifts the monitor lamp 1Bd to an invasion monitoring mode. |
