VIBRATION PERIMETER PROTECTION SYSTEM Russian patent published in 2023 - IPC G08B13/22 

FIELD: burglar alarms.

SUBSTANCE: invention relates to vibration means for protecting the perimeters of facilities. Vibration perimeter security system comprising a cable sensing element, a charge amplifier, a band-stop filter to eliminate the influence of a power frequency signal, a signal splitter, a band-pass filter tuned to the F1 frequency band, a band-pass filter tuned to the F2 frequency band, a peak detector, a digital signal processing device. The output of the sensing element is connected to the input of the charge amplifier. The outputs of the charge amplifier are connected to the input of the digital signal processing device and the input of the band-stop filter. The output of the band-stop filter is connected to the input of a signal splitter, the outputs of which are connected to the input of the band-pass filter for frequency range F1 and to the input of the bandpass filter for frequency range F2. The output of the band-pass filter for the frequency range F1 is connected to the input of the digital signal processing device, and the output of the band-pass filter for the frequency band F2 is connected to the input of the peak detector, the output of which is connected to the input of the digital signal processing device.

EFFECT: expanded frequency range, increase the sensitivity of the vibration system, increased selectivity of the type of perimeter violation, and reduced frequency of false signals by the vibration system.

5 cl, 2 dwg