| 摘要 |
An electronic security system for protecting an interior space such as the interior of an automobile includes a settable alarm for producing, when set by an arming signal, an alarm indication in response to a trigger signal, an arming circuit which, when activated, provides a setting signal to the alarm and activating means for activating and deactivating the arming circuit. The system also includes a detector for detecting a presence in the space being protected and providing a trigger signal to the alarm in response thereto and a detector, which may be the same as the detector which triggers the alarm, to inhibit activation of the arming circuit when a presence is detected in the space before the alarm is set. When the system is implemented as a vehicle anti-theft device, it may also include provision for preventing the system from becoming armed when the vehicle's engine is running and for preventing the vehicle's automatic door locks from locking when the vehicle is still occupied. |
