INTRUDER MONITORING SYSTEM

PROBLEM TO BE SOLVED: To enable switching to a security mode only when simply passing through an entrance without performing any complicated close confirmation when going out in a short time by specifying and identifying the moving direction of a human body and an operated sensor. SOLUTION: The sensor related with the switching of a monitor mode is connected to a monitor line la, the moving direction of the human body is identified in S1 and S3, and the action of the human body is detected in S2. In a normal monitor state, the monitor line 1a forms a closed circuit from a terminal resistor RT. The sensor not related to the switching of the monitor mode is connected to a monitor line 1b, and M1-M3 are magnet sensors. In the normal monitor state, the monitor line 1b forms the closed circuit from the terminal resistor RT. A sensor information specifying means 4 specifies sensor information from the monitor lines 1a and 1b. A processing control means 5 determines the monitor mode by processing the specified sensor information based on a program and simultaneously controls an alarm output means 6 and a controller 3 based on the determined monitor mode.