Signal processing system for absolute-value sensors having periodic structures, particularly for position and angle sensors
US5493290A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1994 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Jan 14, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A signal processing arrangement for absolute-value sensors in which, within the periodic structure (3) a measurement surface which is divided into a plurality of measurement sections lies opposite at least one probe, each measurement section representing a position marking. Inputs (E.sub.n) of the periodic sensor structure (3) are cyclically connected to a signal source (1) via a switch input group (2), and outputs (O.sub.n) of the periodic structure (3) are connected to an evaluation circuit. In order to convert the geometrical value into an absolute electrical image signal, at least one probe in combination with, in each case, one measurement section forms at least one switch unit for each measurement position (X.sub.i). Between the outputs (O.sub.n) of the periodic structure (3) and the evaluation circuit (5), a cyclically switching output switch group (4) is arranged, and the switch units (X.sub.1) of the periodic sensor structure (3) which represent the same position are connected to each other on the input and/or output side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.