Electricity: electrical systems and devices – Electrical speed signal processing systems
Patent
1992-07-20
1995-11-28
Gaffin, Jeffrey A.
Electricity: electrical systems and devices
Electrical speed signal processing systems
307106, H01H 4700
Patent
active
054713617
ABSTRACT:
A vehicle wheel speed sensor has a rotor 11 provided with a series of circumferentially spaced rotor elements 12 mounted on a wheel axle 10. A sensor 13 mounted on a relatively non-rotatable support is influenced by passage of the rotor elements to output a sine wave signal. The sine wave signal is fed for processing to an interface unit 15 on the vehicle and pulses are generated at at least two predetermined phases of each cycle of the sine wave. A method of producing marker pulses by detecting the zero cross-over points and the peaks and troughs of a sine wave signal, and generating a marker pulse at each zero cross-over point and at each peak and trough of the sine wave signal is also described.
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patent: 4280165 (1981-07-01), Pospelov et al.
patent: 4551662 (1985-11-01), Ishida
Gaffin Jeffrey A.
Westland Aerospace Limited
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