GB2248498B - Variable gain optical sensing system - Google Patents
Variable gain optical sensing systemInfo
- Publication number
- GB2248498B GB2248498B GB9021549A GB9021549A GB2248498B GB 2248498 B GB2248498 B GB 2248498B GB 9021549 A GB9021549 A GB 9021549A GB 9021549 A GB9021549 A GB 9021549A GB 2248498 B GB2248498 B GB 2248498B
- Authority
- GB
- United Kingdom
- Prior art keywords
- sensing system
- variable gain
- optical sensing
- gain optical
- variable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 title 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35383—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using multiple sensor devices using multiplexing techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9021549A GB2248498B (en) | 1990-10-04 | 1990-10-04 | Variable gain optical sensing system |
AU86381/91A AU8638191A (en) | 1990-10-04 | 1991-09-26 | Variable gain optical sensing system |
PCT/GB1991/001667 WO1992006358A1 (en) | 1990-10-04 | 1991-09-26 | Variable gain optical sensing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9021549A GB2248498B (en) | 1990-10-04 | 1990-10-04 | Variable gain optical sensing system |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9021549D0 GB9021549D0 (en) | 1991-06-12 |
GB2248498A GB2248498A (en) | 1992-04-08 |
GB2248498B true GB2248498B (en) | 1994-04-13 |
Family
ID=10683205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9021549A Expired - Fee Related GB2248498B (en) | 1990-10-04 | 1990-10-04 | Variable gain optical sensing system |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU8638191A (en) |
GB (1) | GB2248498B (en) |
WO (1) | WO1992006358A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5557400A (en) * | 1995-02-15 | 1996-09-17 | Hewlett-Packard Company | Multiplexed sensing using optical coherence reflectrometry |
US5698848A (en) * | 1995-06-07 | 1997-12-16 | Mcdonnell Douglas Corporation | Fiber optic sensing systems and methods including contiguous optical cavities |
GB9710057D0 (en) * | 1997-05-19 | 1997-07-09 | King S College London | Distributed sensing system |
US6274863B1 (en) * | 1999-07-23 | 2001-08-14 | Cidra Corporation | Selective aperture arrays for seismic monitoring |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2190262B (en) * | 1986-05-09 | 1990-09-05 | Stc Plc | Sensor |
GB2202046A (en) * | 1987-03-11 | 1988-09-14 | Plessey Co Plc | Optical fibre sensor arrangement |
GB2222247A (en) * | 1988-08-23 | 1990-02-28 | Plessey Co Plc | Distributed fibre optic sensor system |
-
1990
- 1990-10-04 GB GB9021549A patent/GB2248498B/en not_active Expired - Fee Related
-
1991
- 1991-09-26 WO PCT/GB1991/001667 patent/WO1992006358A1/en unknown
- 1991-09-26 AU AU86381/91A patent/AU8638191A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
AU8638191A (en) | 1992-04-28 |
WO1992006358A1 (en) | 1992-04-16 |
GB2248498A (en) | 1992-04-08 |
GB9021549D0 (en) | 1991-06-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19941004 |