Vehicle speed signal pulse source

Details Vehicle speed signal pulse source Vehicle speed signal pulse source

1974-07-15

1976-02-17

Corcoran, Robert J.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

324 34D, G01P 348

Patent

active

039394166

ABSTRACT:
This disclosure relates to a vehicle speed signal pulse generator employing a multi-limbed magnetic stator structure and a rotatable magnetic rotor. The multi-limbed magnetic structure includes a pair of magnetic core members about which are wound a primary and secondary winding. A permanent magnet is located in the multi-limbed magnetic structure to cause polarized magnetic flux to flow through each of the magnetic core members. A source of oscillating signals is connected to the input terminals of the primary winding to produce a.c. oscillations in the secondary winding when the vehicle is at rest. The magnetizable rotor includes a plurality of circumferential teeth disposed adjacent the magnetic stator structure to modulate the a.c. oscillations so that the modulated signals developed on the output terminals of the secondary winding will be indicative of the speed of the moving vehicle.

REFERENCES:
patent: 3559064 (1971-01-01), Grundy
patent: 3855525 (1974-12-01), Bernin

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