The present invention relates to an apparatus comprising a vibration pick up means for detecting vibration signal and transmitted to a signal analyzing means (8), via the extension of coaxial cable, wherein the vibration pick up means includes a contact plate (3) and a sensor cable (4), characterized in that the contact plate (3) placed over a coil spring (11) in a row having the sensor cable (4) fitted throughout length of the row to dampened the vibration signal that triggers an alert signal when an intruder object having weight greater than a predefined weight is detected, in which the predefined weight is defined by adjusting damping coefficient of the spring (11).
A system to detect human intrusion
02.12.2021
Patent
Elektronische Ressource
Englisch
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