WO2004088884A1 - Optical system and method for monitoring variable in rotating member - Google Patents
Optical system and method for monitoring variable in rotating member Download PDFInfo
- Publication number
- WO2004088884A1 WO2004088884A1 PCT/ZA2003/000181 ZA0300181W WO2004088884A1 WO 2004088884 A1 WO2004088884 A1 WO 2004088884A1 ZA 0300181 W ZA0300181 W ZA 0300181W WO 2004088884 A1 WO2004088884 A1 WO 2004088884A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical
- source
- energy
- lens
- optical energy
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 53
- 238000012544 monitoring process Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 239000013307 optical fiber Substances 0.000 claims description 9
- 230000001902 propagating effect Effects 0.000 claims description 4
- 238000010408 sweeping Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000005452 bending Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010897 surface acoustic wave method Methods 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
- H04B10/801—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections
Definitions
- This invention relates to a system and method utilizing optical means to
- gauges that are mounted on the rotating member such as a shaft.
- SAWs surface acoustic waves
- the device can be rigidly mounted on a flat region on the member and when
- the member has to be made of a ferromagnetic material
- variable relating to a rotating member the system comprising:
- At least one transducer mountable on the member and which
- transducer in use modulates optical energy received from the
- the variable may be any one or more of strain, speed of rotation,
- the optical source may be mounted on a stationary platform and may
- a broadband optical source such as a super-luminescent diode
- optical fibre optical fibre
- the optical transmission system may comprise a first lens and a second
- the first lens being mountable on the stationary platform in
- the first and second lenses may comprise a pair of graded-
- GRIN refractive index
- the transducer may comprise a second length of optical fibre and optical
- the modulating means may
- the first and second elements may be identical to each other optical energy reflective element.
- the first and second elements may be identical to each other optical energy reflective element.
- the first and second gratings may be mounted on the member in spaced
- transducer may be provided in the first length of fibre.
- means may comprise an optical circulator having a first port connected
- the output of the circulator may be connected to means sensitive to
- Said means may comprise means
- the invention further includes within its scope a method of monitoring a
- variable relating to a rotating member the method comprising the steps
- figure 1 is a block diagram of an optical non-contact system
- figure 2(a) is a diagrammatic representation of a first embodiment of
- figure 2(b) is a similar diagrammatic representation of a second
- figure 3 is a typical spectrum diagram of wavelength separation
- figure 4 is a spectrum diagram generated in accordance with the
- figure 5 is a graph illustrating a comparison between theoretical
- the rotating member may for example be an elongate shaft 12 mounted
- the system comprises an optical source 16 mounted on stationary
- the optical source 16 may
- a broadband source such as a super-luminescent diode (SLD)
- SLD super-luminescent diode
- it may be a sweeping narrowband source (not shown).
- diode is coupled to a first length 20 of optical fibre and the first length of
- optical fibre is connected to a first input 22 of optical energy separating
- a second port 26 of the circulator is
- An output 34 of the circulator is connectable to
- the system further comprises a transducer 38 mounted on the shaft and
- transducer in use modulates optical energy received from the
- transducer comprises a second length 40 of optical fibre and two elongate frequency sensitive optical reflector elements connected in the
- the two elements may comprise a first Bragg grating 42 having a first Bragg grating 42 having a first Bragg grating 42 having a first Bragg grating 42 having a first Bragg grating 42 having a first Bragg grating 42 having a first Bragg grating 42 having a first Bragg grating 42 having a first Bragg grating 42 having a first Bragg grating 42 having a first Bragg grating 42 having a
- fibre 40 is connected at one end thereof to a second lens 46
- Second lens 46 is centrally mounted in a circular disc 50 mounted at
- a tube 52 At the other end of the tube there is provided a
- ball bearing arrangement 54 comprising a stationary inner ring 56 and a
- a flexible bellows member 62 is provided
- Optical energy propagates from source 16 in a first direction via
- the values of the wavelengths are proportional to the strain
- the reflected energy is separated from the energy
- first diagram for no torque applied to the shaft has a first difference 70
- the reflected signals is proportional to the torsion and that a common
- optical sensors measure primarily strain and temperature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Transform (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
- Optical Communication System (AREA)
- Gyroscopes (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60308068T DE60308068T2 (en) | 2003-04-02 | 2003-12-05 | OPTICAL SYSTEM AND METHOD FOR VARIABLE MONITORING IN ONE DIRECTOR |
AU2003291221A AU2003291221A1 (en) | 2003-04-02 | 2003-12-05 | Optical system and method for monitoring variable in rotating member |
EP03783816A EP1614240B1 (en) | 2003-04-02 | 2003-12-05 | Optical system and method for monitoring variable in rotating member |
US10/551,060 US20080011943A1 (en) | 2003-04-02 | 2003-12-05 | Optical system and method for monitoring variable in rotating member |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA200302585 | 2003-04-02 | ||
ZA2003/2585 | 2003-04-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004088884A1 true WO2004088884A1 (en) | 2004-10-14 |
Family
ID=33132342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ZA2003/000181 WO2004088884A1 (en) | 2003-04-02 | 2003-12-05 | Optical system and method for monitoring variable in rotating member |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080011943A1 (en) |
EP (1) | EP1614240B1 (en) |
AT (1) | ATE338394T1 (en) |
AU (1) | AU2003291221A1 (en) |
DE (1) | DE60308068T2 (en) |
WO (1) | WO2004088884A1 (en) |
ZA (1) | ZA200507969B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120162634A1 (en) * | 2009-07-22 | 2012-06-28 | Continental Teves Ag & Co. Ohg | Speed sensor |
US8547534B2 (en) * | 2009-09-03 | 2013-10-01 | Honda Motor Co., Ltd. | Optical fiber sensor, pressure sensor, end effector and sensor signal processor |
WO2014012173A1 (en) * | 2012-07-20 | 2014-01-23 | Advanced Test And Automation Inc. | System and method for measuring torque |
KR102698580B1 (en) | 2016-09-27 | 2024-08-23 | 일루미나, 인코포레이티드 | Imprinted Substrates |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3962911A (en) * | 1974-11-21 | 1976-06-15 | Beloit Corporation | Method and apparatus for coupling signals from a rotating device with end shafts exposed |
US4672214A (en) * | 1984-07-06 | 1987-06-09 | Honda Giken Kogyo Kabushiki Kaisha | Optical switch having light source and receiver positioned stationary relative to steering wheel |
US4746791A (en) * | 1985-11-28 | 1988-05-24 | Daimler-Benz Aktiengesellschaft | Fiber optic sensor with an optical modulator having a permanent magnet for the detection of the movement or position of a magnetic component |
US4767175A (en) * | 1985-07-26 | 1988-08-30 | Emil Wohlhaupter & Co. | Rotary device for transmitting light signals including annular photoelectric transducers |
US5182953A (en) * | 1990-07-13 | 1993-02-02 | Simmonds Precision Products, Inc. | Method and apparatus for shaft torque measurement with temperature compensation |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6876785B1 (en) * | 1999-06-30 | 2005-04-05 | The Board Of Trustees Of The Leland Stanford Junior University | Embedded sensor, method for producing, and temperature/strain fiber optic sensing system |
US6876786B2 (en) * | 2002-10-02 | 2005-04-05 | Cicese-Centro De Investigation | Fiber-optic sensing system for distributed detection and localization of alarm conditions |
-
2003
- 2003-12-05 AT AT03783816T patent/ATE338394T1/en not_active IP Right Cessation
- 2003-12-05 DE DE60308068T patent/DE60308068T2/en not_active Expired - Lifetime
- 2003-12-05 EP EP03783816A patent/EP1614240B1/en not_active Expired - Lifetime
- 2003-12-05 US US10/551,060 patent/US20080011943A1/en not_active Abandoned
- 2003-12-05 WO PCT/ZA2003/000181 patent/WO2004088884A1/en not_active Application Discontinuation
- 2003-12-05 AU AU2003291221A patent/AU2003291221A1/en not_active Abandoned
-
2005
- 2005-10-03 ZA ZA200507969A patent/ZA200507969B/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3962911A (en) * | 1974-11-21 | 1976-06-15 | Beloit Corporation | Method and apparatus for coupling signals from a rotating device with end shafts exposed |
US4672214A (en) * | 1984-07-06 | 1987-06-09 | Honda Giken Kogyo Kabushiki Kaisha | Optical switch having light source and receiver positioned stationary relative to steering wheel |
US4767175A (en) * | 1985-07-26 | 1988-08-30 | Emil Wohlhaupter & Co. | Rotary device for transmitting light signals including annular photoelectric transducers |
US4746791A (en) * | 1985-11-28 | 1988-05-24 | Daimler-Benz Aktiengesellschaft | Fiber optic sensor with an optical modulator having a permanent magnet for the detection of the movement or position of a magnetic component |
US5182953A (en) * | 1990-07-13 | 1993-02-02 | Simmonds Precision Products, Inc. | Method and apparatus for shaft torque measurement with temperature compensation |
Also Published As
Publication number | Publication date |
---|---|
DE60308068T2 (en) | 2007-03-15 |
ATE338394T1 (en) | 2006-09-15 |
US20080011943A1 (en) | 2008-01-17 |
ZA200507969B (en) | 2007-02-28 |
EP1614240B1 (en) | 2006-08-30 |
DE60308068D1 (en) | 2006-10-12 |
AU2003291221A1 (en) | 2004-10-25 |
EP1614240A1 (en) | 2006-01-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4278349A (en) | Fiber optical temperature sensors | |
US5410404A (en) | Fiber grating-based detection system for wavelength encoded fiber sensors | |
US5963321A (en) | Self-calibrating optical fiber pressure, strain and temperature sensors | |
AU2003217614B2 (en) | (Fiber) optic sensor with proper modulation | |
US6671055B1 (en) | Interferometric sensors utilizing bulk sensing mediums extrinsic to the input/output optical fiber | |
US5918286A (en) | Apparatus for torque measurement on rotating shafts | |
US7881567B2 (en) | Optical device for monitoring a rotatable shaft with an oriented axis | |
US20100313658A1 (en) | Fiber optic particle motion sensor system | |
US20080085073A1 (en) | Dynamic optical waveguide sensor | |
JP2001500270A (en) | Bourdon tube pressure gauge with integrated optical strain sensor for measuring tension or compression strain | |
CN201892569U (en) | High-sensitivity and low-frequency vibrating sensor based on MMF-TFBG optical fiber structure | |
EP2331923A1 (en) | Industrial roll with optical roll cover sensor system | |
US4671113A (en) | Fiber optic accelerometer | |
WO1999005493A1 (en) | Transducer for measuring torque in a rotating shaft | |
Agliullin et al. | Tire strain measurement system based on addressed FBG-structures | |
ZA200507969B (en) | Optical system and method for monitoring variable rotating member | |
Kruger et al. | Non-contact torsion sensor using fibre Bragg gratings | |
US5389780A (en) | Optical torque sensor utilizing single polarizing area filters and mechanical amplifier | |
JP2018517908A (en) | Optical fiber pressure device, method and application | |
US5061069A (en) | Fiber-optic bender beam interferometer accelerometer | |
US5617022A (en) | Fiberoptic velocity transducer including dielectric coating for filtering and velocity determination | |
US4609817A (en) | Optical shaft position sensor | |
CN108401554B (en) | Full optical fiber interference type micro-vibration signal orientation pickup probe | |
RU155334U1 (en) | FIBER OPTICAL TEMPERATURE SENSOR | |
RU2085879C1 (en) | Torque converter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005/07969 Country of ref document: ZA Ref document number: 200507969 Country of ref document: ZA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003783816 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10551060 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: JP |