Motor speed sensor

Details Motor speed sensor Motor speed sensor

1976-06-01

1977-09-06

Rolinec, Rudolph V.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

324166, 250233, G01P 336

Patent

active

040471063

ABSTRACT:
A motor speed sensor for sensing the RPM speed of a motor is designed to be placed in line with a conventional mechanical tachometer take-off. The motor speed sensor includes rotatable shafts interconnecting the mechanical tachometer take-off so that the mechanical delivery to the tachometer is preserved and further includes a notched interrupter which rotates in cooperation with the interconnecting shafts. The notches of the interrupter are disposed to rotate between a photo-electric detector and a light source thereby interrupting the beam of light in order to provide a stream of output pulses whose frequency is directly proportional to the speed of the motor.

REFERENCES:
patent: 3729996 (1973-05-01), Metz
patent: 3866120 (1975-02-01), Ford
patent: 3886534 (1975-05-01), Swiden et al.
patent: 3942112 (1976-03-01), Westbrook

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