| 摘要 |
PURPOSE: An anti-crime system is provided to protect a house from an invader by radically preventing intrusion from the outside. CONSTITUTION: The anti-crime system comprises an infrared sensor installed in one side of a building for sensing an intrusion of invaders into the building; a controller connected with the infrared sensor to control a signal transmitted from the sensor; an alarm device to notify an abnormality detected from the sensor and give a warning to an invader; a warning recorder provided in the infrared sensor to record contents of the warning produced from the alarm device; a locking device installed in an entrance and connected with the controller for locking the entrance when a warning is produced from the alarm device and; an emergency communication line to inform police station, security, or guarding company of an abnormality.
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