FIELD: alarm signaling technologies.
SUBSTANCE: as vibro-sensitive element, a length of triboelectric cable is used with central conductor in form of spirally wound spring, positioned in wave-like fashion within aperture of dielectric pipe of triboelectric cable. During analysis of useful signal, high-frequency and resonance components are additionally selected and threshold analysis of amplitudes of high-frequency and low-frequency components of useful signal is performed only if exists a recorded fact of exceeding of threshold level by amplitude of resonance component of useful signal.
EFFECT: higher efficiency, broader functional capabilities, higher reliability, higher resistance to interference.
2 cl, 13 dwg
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