Self-calibrating speedometer/odometer

Details Self-calibrating speedometer/odometer Self-calibrating speedometer/odometer

1981-05-08

1982-09-28

Krawczewicz, Stanley T.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

324168, 324174, 340671, G01P 348, G01P 354

Patent

active

043520634

ABSTRACT:
A speedometer/odometer system for use on a bicycle which system uses a magnet/coil arrangement and a signal processing means for providing a count of the spokes of a wheel as they pass the magnet/coil arrangement the count being determined over a selected time period to provide a digital signal speed indication or being cumulatively counted to provide a digital signal indication of distance travelled. The system can be easily calibrated by using means for producing a calibration constant which can be used to multiply the digital signals and the resultant signal supplied to a suitable digital display means for visually displaying the speed or distance for the rider.

REFERENCES:
patent: 2669669 (1954-02-01), Spaulding
patent: 3417289 (1968-12-01), Jensen
patent: 3716787 (1973-02-01), Hammond
patent: 3898563 (1975-08-01), Erisman
patent: 4007419 (1977-02-01), Jasmine
patent: 4074196 (1978-02-01), Webster
patent: 4156190 (1979-05-01), Chittenden
Hanson, Double Frequency Pulse Aplifier, IBM Technical Disclosure Bulletin, Oct. 1966, pp. 536,537.
Mereness, Bicycle Tachometer/Speedometer, IBM Technical Disclosure Bulletin, Feb. 1975, pp. 2570, 2571.
P de Jong, Bicycle Speedometer, Elector Jul./Aug. 1979, pp. 7-69, 7-70.

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