Method and a device for bending compensation in intensity-based fibre-optical measuring systems
US6934015B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2000 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Jun 16, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/088
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Compensation is provided for bending of an optical fibre in intensity-based optical measuring systems. A measuring signal and a reference signal of different wavelengths are generated and transmitted through an optical connection towards a sensor element. The reference signal is not influenced in the sensor element. The measuring and reference signals are detected and compensation is carried out for bending of the optical connection using correction data. The correction data is based upon pre-store data concerning the relationship between the measured reference signal and the measured measuring signal as a function of the bending influence on the optical connection. Devices and methods according to the invention allow for measurements with an optical pressure measuring system that exhibit effective compensation for any bending of the optical connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.