Opto-electronic method and system for remote detection of physical magnitudes
US4814604A · kind A · utility
13Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Nov 12, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The optoelectronic method and system provides for remote detection of physical magnitudes by multiplexing and demultiplexing signals from a plurality of sensors. The system utilizes a single source of incoherent light which illuminates via optical fibers a plurality of sensors associated with encoding devices. Periodic modulation on the light transmitted by each sensor is accomplished at a frequency which is characteristic of the sensor in question. Demultiplexing is provided for demodulating the signals from the various sensors by a Fourier transform, and for identifying each signal by its characteristic modulation frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.