SEISMIC NON-CONTACT HUMAN DETECTOR Russian patent published in 2018 - IPC G01V1/16 G08B13/189 

FIELD: measuring equipment; data processing.

SUBSTANCE: invention relates to seismic non-contact human detectors. Seismic non-contact human detector contains a sequentially connected geophone, a preamplifier, a bandpass filter, an amplifier, a rectifier integrator, a first threshold device, a step classifier, an OR gate, a counter and an actuator, wherein the second counter input is connected to the second output of the step classifier and the input of the time device, the output of the temporary device is connected to the second input of the OR gate and the first threshold device comprises an additional output which is connected to an input of an automatic gain control circuit whose output is connected to the second input of the amplifier. Output of the integrator rectifier is connected to the input of the differentiator and the input of the first peak detector, while the output of the differentiator is connected to the input of the second peak detector, and the output of the first peak detector and the output of the second peak detector are connected to the inputs of the ratio calculation unit, in addition, the second threshold device, the XOR gate and the AND gate are connected in series to the output of the ratio calculation unit, and the AND gate is embedded in the connection of the second output of the step classifier with the second input of the counter and the input of the temporary device.

EFFECT: invention makes it possible to increase the noise immunity of a seismic non-contact human detector from seismic interference of various origins with an increase in the reliability of detecting a moving person.

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