Electricity: measuring and testing – Electrical speed measuring – Including speed-related frequency generator
Patent
1996-05-09
1998-04-28
Strecker, Gerard R.
Electricity: measuring and testing
Electrical speed measuring
Including speed-related frequency generator
324173, 324174, 32420721, 324252, 327175, 327510, G01P 3481, G01P 3489, G01P 3309, H03K 3017
Patent
active
057449503
ABSTRACT:
A sensor for determining the rotational speed of a rotating element. The sensor includes a giant magnetoresistive ratio sensing device which is magnetically coupled to the rotating element and includes an output terminal. The sensing device generates an output signal at the output terminal having a frequency corresponding to the rotational speed of the rotating element. A wave-shaping circuit is connected to the output terminal for receiving the output signal and for generating a digital switching signal having a frequency equal to the frequency of the output signal. A frequency divider has an input connected to the wave shaping circuit for receiving the digital switching signal. The frequency divider generates, in response to the digital switching signal, a square wave output having a 50% duty cycle and a frequency equal to the frequency of the digital switching signal divided by a predetermined divisor.
REFERENCES:
patent: 3418528 (1968-12-01), Junichi Watanabe et al.
patent: 3732493 (1973-05-01), Pelkey
patent: 3867647 (1975-02-01), Callahan et al.
patent: 4556886 (1985-12-01), Shimizu et al.
patent: 4580047 (1986-04-01), Sasaki et al.
patent: 4914387 (1990-04-01), Santos
patent: 5068606 (1991-11-01), Kawate et al.
patent: 5101155 (1992-03-01), Oehler et al.
patent: 5231351 (1993-07-01), Kordts et al.
patent: 5287238 (1994-02-01), Baumgart et al.
patent: 5293125 (1994-03-01), Griffen et al.
patent: 5574364 (1996-11-01), Kajimoto et al.
Okuyama et al; "Magneto-transport phenomena . . . with two magnetic components", Journal of Magnetism and Magnetic Materials 113 (1992) pp. 79-82.
SSI Technologies, Inc.
Strecker Gerard R.
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