| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the number of part items and cost, to improve working efficiency, and to expand an object of a crime preventive countermeasure in the crime preventive countermeasure. <P>SOLUTION: A pulse signal outputted for detecting a position in opening-closing operation of a door 2 is used, and a door controller 4 determines the necessity of generating an alarm signal required for the crime preventive countermeasure by a control state of an electric lock 5 controlled by the door controller 4. The door controller 4 transmits this alarm signal by generating the alarm signal when determining that generation of the alarm signal is required. Actually, the alarm signal is generated by taking into consideration as being in a state where a suspicious individual opens the door 2, for example, by forcibly unlocking or damaging the electric lock 5, by counting a pulse signal by the predetermined number regardless of the condition that the electric lock 5 is in a locking state and the door controller 4 recognizes this state. <P>COPYRIGHT: (C)2009,JPO&INPIT |
