Detection system for automobiles and other motor-driven objects

Details Detection system for automobiles and other motor-driven objects Detection system for automobiles and other motor-driven objects

1975-04-21

1977-07-26

Habecker, Thomas B.

Communications: electrical

Selective

Having indication or alarm

340258C, G08G 100

Patent

active

040386333

ABSTRACT:
A system for detecting the presence of motor-driven vehicles or other objects which are motor-driven includes a sensor for detecting the presence of a changing magnetic field generated by operation of a rotational electrical device, such as an alternator, a generator, or a magneto contained in the electrical system of and driven by the motor of the object being sensed. The sensor includes a coil wound on a ferromagnetic core and connected to a suitable amplifier and output device. Electrical current is induced to flow in the coil as long as a motor-driven object containing an operative rotational electrical device is in close proximity to the coil. The output device is energized in response to the continuous flow of induced electrical current in the coil to provide a continuous output indicating that the presence of the motor-driven object is being detected.

REFERENCES:
patent: 2450166 (1948-09-01), Rich
patent: 3634843 (1972-01-01), Corris

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