Optical fiber based microphone array for detecting acoustic emissions generated by an area of interest
US9736597B1 · kind B1 · utility
4Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2016 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Feb 17, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R29/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A microphone array for detecting acoustic emissions generated by equipment. The array includes at least one grid having a plurality of sensors each including a compact arrangement of optical fiber having first and second optical fiber ends wherein the first optical fiber end of a first sensor is terminated. The array also includes an optoelectronic device coupled to a second optical fiber end of a second sensor, wherein the optoelectronic device generates laser light that is transmitted through the plurality of sensors in the grid and is reflected back to the optoelectronic device to enable detection of acoustic emissions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.