Electricity: measuring and testing – Electrical speed measuring – Including speed-related frequency generator
Patent
1997-07-03
1999-07-20
Snow, Walter E.
Electricity: measuring and testing
Electrical speed measuring
Including speed-related frequency generator
324173, 324175, 32420722, 32420725, G01P 348, G01P 354, G01P 336, G01B 714
Patent
active
059260173
ABSTRACT:
A device for measuring a rotary frequency of a rotating vehicle tire includes a number of first poles uniformly arranged on a circle with a radius R1 on or within a vehicle tire. A first sensor, for sensing the first poles, is stationarily arranged at a distance R2 from a rotational axis of the vehicle wheel. The radii have the following relationship: 0.9 R1<R2<1.1 R1. A computing unit is connected to the first sensor. The first sensor sends first signals to the computing unit when the first poles pass the first sensor. The computing unit determines a first time period between passing of sequential ones of the first poles. The computing unit multiplies a reciprocal value of the first time period by a reciprocal value of the number of the first poles to a multiplication product and supplies the multiplication product as a measure of a first rotary frequency to a user device.
Becherer Thomas
Huinink Heinrich
Kleinhoff Klaus
Von Grunberg Hubertus
Continental Aktiengesellschaft
Snow Walter E.
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