Apparatus for detecting persons hidden in vehicles

Details Apparatus for detecting persons hidden in vehicles Apparatus for detecting persons hidden in vehicles

1976-04-12

1978-06-20

Swann, III, Glen R.

Communications: electrical

Systems

Call station

340 65, 340279, 340276, G08B 1300

Patent

active

040964744

ABSTRACT:
A seismic detection system for detecting persons hidden in vehicles inclu a seismic transducer used as a sensing device and electronic processing circuitry for processing the output signals from the seismic transducer. The electronic circuitry detects output signals from the seismic transducer, and, by counting the number of times the signal crosses a preset threshold during a given time window, makes a logic choice between there being personnel or no personnel in the vehicle. If a person or persons are in the vehicle an output is produced and this output is used to actuate audio and/or visual indicators thereby indicating that a person or persons are in the vehicle.

REFERENCES:
patent: 3668675 (1972-06-01), Joens et al.
patent: 3922663 (1975-11-01), Lubke et al.
patent: 3961323 (1976-06-01), Hartkorn

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