Acoustic absolute position encoder and method
US9121927B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 2012 |
| Grant date | Sep 1, 2015 |
| Priority date | — |
| Expiry date | Dec 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S1/76
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention teaches acoustic absolute position encoders and methods for deploying the same. The encoder has a moving member with a mechanical contacting portion, and a stationary member associated with the moving member. Reed elements are mounted on the stationary member such that they are mechanically engaged by the contacting portion of the moving member as the latter moves linearly or rotates. The reed elements generate sound tones in response to transient contact with the contacting portion. A receiver receives the tones and an acoustic processing circuit determines the absolute position of the moving member based on the sound tones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.