Electronic circuit and method for a dimension-measuring device
US6229301A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1998 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Dec 16, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D18/001
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The electronic circuit (3) comprises an electric feed circuit (42) supplying at least one feed voltage (E.sub.P E.sub.N) intended to feed a network of magnetoresistive electrodes (100) and a measuring circuit (30-39) including two differential inputs (C, C', S, S') connected to the network. The measuring circuit uses a rough counter and a fine interpolation circuit to determine the position of the sensor along the scale on the basis of the two sinusoidal input signals received. The feed circuit periodically reduces the electric feed voltage supplied so as temporarily to lessen the dissipation of energy in the magnetoresistive electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.