| 摘要 |
PROBLEM TO BE SOLVED: To provide an intruder detection device and an intruder detection method, preventing erroneous decision caused by wind and improving intruder detection accuracy without applying high computation load, as one proposal for improving the degree of freedom of the design of a Sagnac interferometer optical fiber vibration sensor as a sensor for security. SOLUTION: The intruder detection device includes the optical fiber vibration sensor and an intruder detection part. The intruder detection part comprises an intruder determination unit and an alarm. The intruder determination unit comprises a data part preliminarily storing output level relative to a wind speed value, a wind speed determination part determining a wind speed based on detection signals from the optical fiber vibration sensor, and a threshold value determination part determining, with reference to the data stored in the data part, the output level for operating the alarm based on the wind speed determined. When the detection signals are larger than the output level for operating the alarm, alarm actuation signals are output. COPYRIGHT: (C)2011,JPO&INPIT |
