To provide a life guard system detecting not only an abnormal unlocking action in a lock but an abnormal condition such as occurrence of a fire and intrusion and an abnormal condition of a person on the interior side.
This life guard system is provided with the lock 14 arranged in a door 11, a lock action detecting means 15 installed on the interior side of the door 11 for detecting a locking action and a normal unlocking action of the lock 14 and an abnormal unlocking action from the exterior side, and an alarm generating means 19 giving an alarm K by the abnormal unlocking action detected by the lock action detecting means 15. By means of the lock action detecting means 15, a guard starting mode signal A is produced by detection of the locking action, a guard resetting mode signal B is produced by detection of the normal unlocking action, and an abnormal unlocking mode signal C is produced by detection of the abnormal unlocking action. By means of the alarm generating means 19, a locking information F is produced by receipt of the guard starting signal A, an intrusion alarm K is produced by receipt of the abnormal unlocking mode signal C, and the intrusion alarm K is stopped by receipt of the guard resetting mode signal B.
SHIMADO TAKAAKI
OHARA TAKANORI
SHIMADO TAKAAKI
AD FOREST KK
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