Method of creating conversion table for distance detection and displacement sensor
US6819100B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2003 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Dec 15, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D3/022
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A source table showing a standard relation between a detection object and a detection distance is stored in a memory (4). A CPU (3) receives inputs regarding distances to three measurement points from an input portion (5) and recognizes an amplitude voltage corresponding to the input, as a measured value at the measurement point. Furthermore, the CPU (3) extracts a range which corresponds to a difference between the farthest distance and the shortest distance, in which a ratio between voltages corresponding to measurement points closely resembles a ratio between the actually measured values, from the source table as a usage range, and creates a conversion table by correcting voltages in this extracted range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.