Inverse corner cube for non-intrusive three axis vibration measurement
US6655215B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 2001 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Aug 3, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H9/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A non-intrusive apparatus and method for measuring vibration of an object along three axes. A vibration measurement device is provided which has three orthogonal right triangular panels forming a pyramidal shape having three 90° angled corners which meet at an apex, wherein each triangular panel has an outer mirrored surface. The device is attached to an object which is subjected to vibration, such that the apex of the device points in a direction away from the object. A beam of light is directed onto the apex of the device such that a portion of the light is reflected off of each mirrored surface, sending reflected light in three directions to three different light sensors. The magnitude of vibration of the object can then be determined in each of three orthogonal directions, along three axes, by measuring the difference in movements of position between the reflected light and a reference beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.