CN2537970Y - Optical fibre pressure sensor - Google Patents
Optical fibre pressure sensor Download PDFInfo
- Publication number
- CN2537970Y CN2537970Y CN 02224872 CN02224872U CN2537970Y CN 2537970 Y CN2537970 Y CN 2537970Y CN 02224872 CN02224872 CN 02224872 CN 02224872 U CN02224872 U CN 02224872U CN 2537970 Y CN2537970 Y CN 2537970Y
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- CN
- China
- Prior art keywords
- pressure
- optical fiber
- measure
- remotely
- pressure sensor
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- 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
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Abstract
An optical fiber sensor which can measure the pressure remotely consists of a plurality of circles of optical fibers on the cylinder shape rolled polyester film, a rubber protecting sleeve sleeves outside the optical fibers and a supporting mechanism. The optical fiber sensor can remotely measure the pressure and the pressure quantity transformed from other physical quantities. The utility model has the obvious advantages that: the sensor can remotely measure the pressure and resist lightening inference and is applicable to inflammable and explosive situations.
Description
Affiliated technical field
The utility model relates to a kind of fibre optic compression sensor, and it is to utilize the inside of optical fibre intensity variations to reflect the variation of external pressure.
At present, the method for known gaging pressure is a lot, and foil gauge mensuration, optical measuring method, Hall effect mensuration, optical grating ruler measurement method or the like are arranged.But present many measuring methods all are unfavorable for remote measurement and monitoring, and it is too big disturbed by extraneous forceful electric power signal, and the remote transmission distortion is serious, the measuring mechanism complexity, and poor reliability is unfavorable for safeguarding.In addition, all utilize the method for electrical measurement all to be not suitable for now for inflammable and explosive environment, because any point electric spark all may cause serious fire or explosion accident, cause immeasurable loss.
Summary of the invention
Prior art is disturbed in signals transmission greatly in order to overcome, distortion serious, be not suitable for inflammable and explosive occasion.The utility model provides a kind of the collection to measure and the pressure transducer that is transmitted in the whole body.
It has adopted and has made fibre-optical bending experience the pressure variation, and utilizes the waveguide of optical fiber as the remote transmission signal itself.Have signal undistorted, be easy to transmit, antijamming capability is strong, the remarkable advantage that is applicable to inflammable and explosive environment.
The technical scheme that the prior art problem that solves the utility model is adopted is: be rolled into 8-10 circle optical fiber in the mylar outside surface winding cylindraceous, put the elastomeric material sheath in outer fiber, and radially make a call to two via holes at caoutchouc elasticity sheath urceolus two, as the gaging pressure arrowhead of optical fiber cylinder.Its measuring principle is: when transmitting in the optical fiber of light signal in bending, the attenuation degree of its light intensity is relevant with the radius-of-curvature of fibre-optical bending, and radius-of-curvature is more little, and it is big more to decay.
The beneficial effects of the utility model are to reach the amount of pressure that is converted by other physical quantity by remote measurement pressure.Its remarkable advantage is can remote measurement pressure, and anti lightning disturbs, and can be applicable to inflammable and explosive occasion.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a section of structure of the present utility model.
Fig. 2 is the sectional view of Figure 1B-B direction.
In Fig. 1, Fig. 2,1. supporter. 2. mylar. 3. optical fiber. 4. rubber cover. 5. sense of displacement guide rail .6. deformation pressing plate. 7. lower position nut. 8. upper limit nut. the 9. pressure point of application.
Specific embodiment
In Fig. 1; support and the fixed mechanism of having formed sensor by supporter 1 and sense of displacement guide rail; formed the core component of experiencing pressure by mylar cylinder 2 and the optical fiber 3 and the rubber cover 4 that twine thereon; after being defined the strong point 9 and be under pressure by sense of displacement guide rail 5 and deformation pressing plate 6, cylinder can only be out of shape along sense of displacement guide rail arrowhead.Define the interval of gaging pressure by lower position nut 7 and upper limit nut 8, also protected optical fiber not to be pressed down simultaneously.When wanting telemeasurement pressure, need only couple together the two ends of optical fiber 3 and Transmission Fibers, after the strong point 9 was under pressure, cylinder can only be out of shape along the guide rail direction, light intensity in the optical fiber 3 decays because of crooked, and the size of its decay is directly proportional within the specific limits with pressure.So just realized long-range measurement to pressure.
Claims (3)
1. a fibre optic compression sensor is characterized in that optical fiber is wrapped on the mylar cylinder, and on cylindrical sleeve rubber sleeve.。
2. fibre optic compression sensor according to claim 1, its mylar are the elastomeric polypropylenes film of 0.08-0.1mm.
3. fibre optic compression sensor according to claim 1, its optical fiber and Transmission Fibers that is wrapped on the mylar cylinder is a same optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02224872 CN2537970Y (en) | 2002-05-09 | 2002-05-09 | Optical fibre pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02224872 CN2537970Y (en) | 2002-05-09 | 2002-05-09 | Optical fibre pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2537970Y true CN2537970Y (en) | 2003-02-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02224872 Expired - Fee Related CN2537970Y (en) | 2002-05-09 | 2002-05-09 | Optical fibre pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2537970Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100430707C (en) * | 2004-03-30 | 2008-11-05 | Asml控股股份有限公司 | Pressure sensor |
| CN100442029C (en) * | 2006-06-19 | 2008-12-10 | 中国科学院上海光学精密机械研究所 | Optical fiber raster dynamic weigher for vehicle axle weight |
| CN102080980A (en) * | 2010-12-06 | 2011-06-01 | 沈阳航空航天大学 | Measuring device and method of oil level/ intensity of airplane fuel oil |
| CN102576035A (en) * | 2009-10-23 | 2012-07-11 | 美国地震***有限公司 | Fiber optic transducers, fiber optic accelerometers and fiber optic sensing systems |
| CN103411727A (en) * | 2013-07-26 | 2013-11-27 | 西北工业大学 | Optical pressure senor for measuring pressure of compressor and measuring method of optical pressure sensor |
| CN104612665A (en) * | 2014-12-31 | 2015-05-13 | 哈尔滨工业大学 | Three-membrane and two-amplification high-voltage optical fiber pressure sensor and measuring method for underground pipeline pressure by sensor |
| WO2015169217A1 (en) * | 2014-05-06 | 2015-11-12 | 无锡华润上华半导体有限公司 | Pressure sensor and manufacturing method therefor |
| CN106773014A (en) * | 2016-12-12 | 2017-05-31 | 南京大学 | A kind of compound double cavity structure for improving optical fiber hydrostatic sensor sensitivity |
| CN109374751A (en) * | 2018-11-01 | 2019-02-22 | 北京航空航天大学 | A kind of fiber optic loop acoustic emission sensor and packaging method |
| CN109580053A (en) * | 2018-11-14 | 2019-04-05 | 国网浙江杭州市余杭区供电有限公司 | A kind of optical fiber matches the fibre optic compression sensor system of fine disk body |
-
2002
- 2002-05-09 CN CN 02224872 patent/CN2537970Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100430707C (en) * | 2004-03-30 | 2008-11-05 | Asml控股股份有限公司 | Pressure sensor |
| CN100442029C (en) * | 2006-06-19 | 2008-12-10 | 中国科学院上海光学精密机械研究所 | Optical fiber raster dynamic weigher for vehicle axle weight |
| CN102576035A (en) * | 2009-10-23 | 2012-07-11 | 美国地震***有限公司 | Fiber optic transducers, fiber optic accelerometers and fiber optic sensing systems |
| CN102080980A (en) * | 2010-12-06 | 2011-06-01 | 沈阳航空航天大学 | Measuring device and method of oil level/ intensity of airplane fuel oil |
| CN102080980B (en) * | 2010-12-06 | 2012-12-05 | 沈阳航空航天大学 | Measuring method of oil level/ intensity of airplane fuel oil |
| CN103411727B (en) * | 2013-07-26 | 2015-08-05 | 西北工业大学 | For the tonometric fibre optic compression sensor of pneumatic plant and measuring method thereof |
| CN103411727A (en) * | 2013-07-26 | 2013-11-27 | 西北工业大学 | Optical pressure senor for measuring pressure of compressor and measuring method of optical pressure sensor |
| CN105092110A (en) * | 2014-05-06 | 2015-11-25 | 无锡华润上华半导体有限公司 | Pressure sensor and manufacturing method thereof |
| WO2015169217A1 (en) * | 2014-05-06 | 2015-11-12 | 无锡华润上华半导体有限公司 | Pressure sensor and manufacturing method therefor |
| US10101225B2 (en) | 2014-05-06 | 2018-10-16 | Csmc Technologies Fab1 Co., Ltd. | Pressure sensor with light detection of diaphragm protrusion |
| CN104612665A (en) * | 2014-12-31 | 2015-05-13 | 哈尔滨工业大学 | Three-membrane and two-amplification high-voltage optical fiber pressure sensor and measuring method for underground pipeline pressure by sensor |
| CN104612665B (en) * | 2014-12-31 | 2017-07-28 | 哈尔滨工业大学 | Three films two are put high voltage optical fiber pressure sensor and the measuring method of down-hole pipe pressure are realized using the sensor |
| CN106773014A (en) * | 2016-12-12 | 2017-05-31 | 南京大学 | A kind of compound double cavity structure for improving optical fiber hydrostatic sensor sensitivity |
| CN109374751A (en) * | 2018-11-01 | 2019-02-22 | 北京航空航天大学 | A kind of fiber optic loop acoustic emission sensor and packaging method |
| CN109580053A (en) * | 2018-11-14 | 2019-04-05 | 国网浙江杭州市余杭区供电有限公司 | A kind of optical fiber matches the fibre optic compression sensor system of fine disk body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NORTHWESTERN POLYTECHNICAL UNIVERSITY Free format text: FORMER NAME OR ADDRESS: O-HI CHENG |
|
| CP03 | Change of name, title or address |
Address after: No. 127 Youyi West Road, Shaanxi, Xi'an Patentee after: Northwestern Polytechnical University Address before: No. 701, friendship West Road 127, West Village, building 3, west 6, Youyi Road, Shaanxi, Xi'an Patentee before: Ao Chengxi |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |