CN203981265U - Highly sensitive optical-fiber type vibration transducer - Google Patents
Highly sensitive optical-fiber type vibration transducer Download PDFInfo
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- CN203981265U CN203981265U CN201420295420.2U CN201420295420U CN203981265U CN 203981265 U CN203981265 U CN 203981265U CN 201420295420 U CN201420295420 U CN 201420295420U CN 203981265 U CN203981265 U CN 203981265U
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- fiber
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Abstract
The utility model discloses highly sensitive optical-fiber type vibration transducer, comprise machine box and be all positioned at fixed body, single-mode fiber, two suspention lines, two affixed bodies, whipple hammer and two limit bodies of machine box; Single-mode fiber self part rolls to circular and corresponding formation fiber optic loop, and fixed body is fixed fiber optic loop, and at least a fiber optic loop part is subject to self material deformation effect of stress and does not contact machine box inside surface so that unsettled and form unsettled fiber segment all the time; In unsettled fiber segment, be fixedly mounted with two affixed bodies, its one end affixed affixed body respectively separately of two suspention lines, its common affixed whipple hammer of other end separately of two suspention lines; Only when machine box is subject to vibrating, whipple hammer just now reciprocally swinging vibrates to order about unsettled fiber segment by two suspention lines, the part of the limited impression that fiber optic loop arranges separately through two limit bodies reciprocatingly slides in limited impression, and the limited impression that vibrated fiber optic loop is provided with separately by two limit bodies and fixed body constraint are down to by self material stress effect and elastic deformation repeatedly.The utility model structure is more reasonable, perfect, further improves the sensitivity of sense vibrations.
Description
Technical field
The utility model relates to fibre-optical sensing device, particularly highly sensitive optical-fiber type vibration transducer.
Background technology
Optical fiber sensing technology is the product of modern communication technology, is the brand-new technology progressively growing up along with the development of optical fiber and the communication technology.Fibre Optical Sensor has superiority in many aspects: than existing technology, have higher detection sensitivity, can make various geometric configuratioies, can survey various physical quantitys (sound, magnetic field, temperature, rotation etc.), also can be used for high temperature, high voltage, electronic noise, corrosion or other ambient stress, and there is the inherent characteristic of fiber-optic probe technology.Current, the development of sensory field of optic fibre can be divided into two general orientation in the world: principle research and application and development.Along with reaching its maturity of optical fiber technology, to Fibre Optical Sensor, practical exploitation becomes focus and the key of whole field development.Because optical fiber sensing technology does not promptly obtain industrialization as Fibre Optical Communication Technology, many gordian techniquies still rest on the laboratory model machine stage, apart from commercialization, have certain distance, so the principle research of optical fiber sensing technology is still in considerable position.By optical fiber sensing technology application and security protection, foreign applications research and development early, has reached the representative You Sanjia enterprise in Practical stage at present: OPTELLIOS, SENSOPTICS, FFT company.Worldwide, due to improving constantly of Dui Gong China Democratic National Construction Association and industrial plants security and benefit requirement, progressively soaring to the demand of integrated safety detecting system, possessing can be continuously, free of discontinuities, long range measurements have the distributed optical fiber sensing system of extremely strong compatibility to make to measure just with measured medium for this reason.Distributed optical fiber sensing system has three types conventionally: raman type, Brillouin's type and FBG type.
At present, the Fibre Optical Sensor of China research great majority concentrate on universities and colleges and R&D institution, still do not complete the transition to commercialization by laboratory.Wherein, the technology of comparative maturity comprises: optical fiber oil tank level and the temperature measurement system of Tsing-Hua University's Fibre Optical Sensor center and General Logistics Department's cooperation research and development exploitation, installation and operation several years; The optical fibre gyro system of BJ University of Aeronautics & Astronautics and general assembly cooperation research and development, index is 0.2 °/hr at present; The distributed optical fiber sensing system of China Measures Institute's development, existing related products report; The strong voltage of HUST and Guangdong company joint research and development, large current sensing system.In addition,, on Guangdong, Shenzhen and other places, also set up many fiber optic passive devices manufacturer.Because Fibre Optical Sensor fails to cross over the threshold of commercialization, the exponentially type optical fiber communication industry that do not resemble increases, many Fibre Optical Sensors that are applied to traffic administration, alarm device of needing badly and large component opitical fiber sensor testing tool still depend on import, and urgently the space of development is boundless.
In sum, although the sensitivity of its sense vibrations of Fibre Optical Sensor of existing various employing optical fiber sense vibrations is better, its structure is still reasonable not, and the sensitivity of sense vibrations still has much room for improvement.
Utility model content
The purpose of this utility model is to provide a kind of highly sensitive optical-fiber type vibration transducer, and its structure is more reasonable, perfect, further improves the sensitivity of sense vibrations.
The purpose of this utility model is achieved in that a kind of highly sensitive optical-fiber type vibration transducer, comprises machine box, the joints of optical fibre and is all positioned at fixed body, single-mode fiber, the first suspention line, the second suspention line, the first affixed body, the second affixed body, whipple hammer and the first limit body, second limit body of machine box, on machine box box wall, the installation jack that penetrates its wall body is being set, its two ends of single-mode fiber is affixed with the joints of optical fibre that are installed on jack respectively, single-mode fiber self part rolls to circular and corresponding formation fiber optic loop, the corresponding part of fiber optic loop self bends to and is connected as a single entity but intersects and contact or close two sections of optical fiber-first paragraph optical fibers and second segment optical fiber, fixed body is packed in machine box and first paragraph optical fiber and the position that second segment optical fiber intersects is relative to each other solidly installed, keep two sections of optical fibers to be the state of intersecting and to fix fiber optic loop, in machine box, be fixedly mounted with two limit body-the first limit bodies and the second limit body, two limit bodies are provided with limited impression, the limited impression that the part of fiber optic loop is provided with separately through two limit bodies respectively and be subject to self material deformation stress, Action of Gravity Field and limited groove stop and are constrained on all the time in the limited impression that two limit bodies arrange separately, at least a fiber optic loop part is corresponding is subject to self material deformation effect of stress and does not contact any wall of machine box inside surface so that unsettled and form unsettled fiber segment all the time in machine box, in unsettled fiber segment, be fixedly mounted with two affixed bodies-mutual the first affixed body and the second affixed body not contacting, two suspention line-the first suspention lines, it distinguishes affixed the first affixed body and the second affixed body in one end separately the second suspention line, two its common affixed whipple hammers of other end separately of suspention lines, the projection that the annular projection that fiber optic loop projects on surface level along pedal line direction projects separately along pedal line direction around two suspention lines and whipple hammer on surface level, whipple hammer is subject to fiber optic loop self material stress not contact any wall of machine box inside surface with gravity acting in conjunction and correspondingly by two suspention lines, is suspended in midair in machine box unsettled by two suspention lines, only when machine box is subject to vibrating, whipple hammer just now relatively machine box reciprocally swinging with the unsettled fiber segment of ordering about fiber optic loop by two suspention lines and having, vibrate, fiber optic loop reciprocatingly slides in mode contact with limited impression through the partial response of limited impression in limited impression, and the limited impression that vibrated fiber optic loop is provided with separately by two limit bodies and fixed body retrain down to by self material stress effect and elastic deformation repeatedly.
When the whipple hammer the utlity model has is vibrated and is caused fiber optic loop deformation, it is the used time of doing that optical fiber is subject to longitudinal (axially) mechanical stress, the length of fiber optic loop, core diameter and fiber core refractive index all will change, therefore, the optical physics amounts such as its frequency of light wave of the light conducting in single-mode fiber and wavelength also change corresponding, the optical physics amount changing is after photoelectric commutator conversion and data acquisition and signal processing circuit processing, again by utilizing frequency domain or time domain converter technique output waveform or spectrum analysis, this waveform or spectrum analysis just can reflect vibration signal and the vibration signal intensity that the utility model senses.The utility model structure is more reasonable, perfect, further improves the sensitivity of sense vibrations.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the overall three-dimensional sectional structure schematic diagram of the utility model.
Embodiment
A kind of highly sensitive optical-fiber type vibration transducer, as shown in Figure 1, comprise machine box 12, the joints of optical fibre 1 and be all positioned at fixed body 16, single-mode fiber 2, the first suspention line 5, the affixed body 14 of the second suspention affixed body 4, second of line 11, first, whipple hammer 9 and the first limit body 6, second limit body 13 of machine box 12, on machine box 12 box walls, the installation jack that penetrates its wall body is being set, single-mode fiber 2 its two ends are affixed with the joints of optical fibre 1 that are installed on jack respectively, single-mode fiber 2 self part rolls to circular and corresponding formation fiber optic loop 10, the corresponding part of fiber optic loop 10 self bends to and is connected as a single entity but intersects and contact or close two sections of optical fiber-first paragraph optical fibers 17 and second segment optical fiber 15, fixed body 16 is packed in machine box 12 and first paragraph optical fiber 17 and the position that second segment optical fiber 15 intersects is relative to each other solidly installed, keep two sections of optical fibers to be the state of intersecting and to fix fiber optic loop 10, in machine box 12, be fixedly mounted with two limit body-the first limit bodies 6 and the second limit body 13, two limit bodies are provided with limited impression 7, the limited impression 7 that the part of fiber optic loop 10 is provided with separately through two limit bodies respectively and be subject to self material deformation stress, Action of Gravity Field and limited groove 7 stop and are constrained on all the time in the limited impression 7 that two limit bodies arrange separately, at least fiber optic loop 10 part is corresponding is subject to self material deformation effect of stress and does not contact any wall of machine box 12 inside surface so that unsettled and form unsettled fiber segment 3 all the time in machine box 12, in unsettled fiber segment 3, be fixedly mounted with two affixed bodies-mutual the first affixed body 4 and the second affixed body 14 not contacting, two suspention line-the first suspention lines 5, its one end affixed the first affixed body 4 and second affixed body 14 respectively separately of the second suspention line 11, two its common affixed whipple hammers 9 of other end separately of suspention lines, the projection that the annular projection that fiber optic loop 10 projects on surface level along pedal line direction projects separately along pedal line direction around two suspention lines and whipple hammer 9 on surface level, whipple hammer 9 is subject to fiber optic loop 10 self material stress not contact the machine box any wall of 12 inside surface with gravity acting in conjunction and correspondingly by two suspention lines, suspended in midair at machine box 12 interior unsettled by two suspention lines, only when machine box 12 is subject to vibrating, whipple hammer 9 unsettled fiber segment 3 vibrations that machine box 12 reciprocally swingings have to order about fiber optic loop 10 by two suspention lines relatively just now, fiber optic loop 10 reciprocatingly slides in mode contact with limited impression 7 through the partial response of limited impression 7 in limited impression 7, and vibrated 10 limited impressions that are provided with separately by two limit bodies of fiber optic loop 7 and fixed body 16 constraints are down to by self material stress effect and elastic deformation repeatedly.
As shown in Figure 1, also comprise with whipple hammer 9 and do not produce relative to each other mutually the barrier post 8 of electric field action power or magnetic fields power; All barrier posts 8 are packed in machine box 12 uniform around whipple hammer 9 hoops, do not contact and do not contact with static whipple hammer 9 mutually each other, but the while again by with the discontiguous fiber optic loop 10 of barrier post 8 around; When whipple hammer 9 is swinging, the distance between any two barrier posts 8 can not be through the gap between it by being advisable with whipple hammer 9, so that whipple hammer 9 is limited in the regional extent that barrier post 8 surrounded and swings by barrier post 8; Two suspention lines pass respectively the gap between barrier post 8 and do not contact with arbitrary barrier post 8 when static.
Claims (2)
1. a highly sensitive optical-fiber type vibration transducer, is characterized in that: comprise machine box (12), the joints of optical fibre (1) and be all positioned at fixed body (16), single-mode fiber (2), the first suspention line (5), the second suspention line (11), the first affixed body (4), the second affixed body (14), whipple hammer (9) and the first limit body (6), second limit body (13) of machine box (12), on machine box (12) box wall, the installation jack that penetrates its wall body is being set, its two ends of single-mode fiber (2) is affixed with the joints of optical fibre (1) that are installed on jack respectively, single-mode fiber (2) self part rolls to circular and corresponding formation fiber optic loop (10), the corresponding part of fiber optic loop (10) self bends to and is connected as a single entity but intersects and contact or close two sections of optical fiber-first paragraph optical fibers (17) and second segment optical fiber (15), fixed body (16) is packed in machine box (12) and first paragraph optical fiber (17) and the position that second segment optical fiber (15) intersects is relative to each other solidly installed, keep two sections of optical fibers to be the state of intersecting and to fix fiber optic loop (10), in machine box (12), be fixedly mounted with two limit body-the first limit bodies (6) and the second limit body (13), two limit bodies are provided with limited impression (7), the limited impression (7) that the part of fiber optic loop (10) is provided with separately through two limit bodies respectively and be subject to self material deformation stress, Action of Gravity Field and limited groove (7) stop and are constrained on all the time in the limited impression (7) that two limit bodies arrange separately, at least fiber optic loop (10) part is corresponding is subject to self material deformation effect of stress and does not contact any wall of machine box (12) inside surface so that unsettled and form unsettled fiber segment (3) all the time in machine box (12), in unsettled fiber segment (3), be fixedly mounted with two affixed bodies-mutual the first affixed body (4) and the second affixed body (14) not contacting, two suspention line-the first suspention lines (5), it distinguishes affixed the first affixed body (4) and the second affixed body (14) in one end separately the second suspention line (11), two its common affixed whipple hammers of other end (9) separately of suspention lines, the projection that the annular projection that fiber optic loop (10) projects on surface level along pedal line direction projects separately along pedal line direction around two suspention lines and whipple hammer (9) on surface level, whipple hammer (9) is subject to fiber optic loop (10) self material stress not contact any wall of machine box (12) inside surface with gravity acting in conjunction and correspondingly by two suspention lines, suspended in midair in machine box (12) unsettled by two suspention lines, only when machine box (12) is subject to vibrating, whipple hammer (9) unsettled fiber segment (3) vibration that machine box (12) reciprocally swinging has to order about fiber optic loop (10) by two suspention lines relatively just now, fiber optic loop (10) reciprocatingly slides in mode contact with limited impression (7) through the partial response of limited impression (7) in limited impression (7), and the limited impression (7) that vibrated fiber optic loop (10) is provided with separately by two limit bodies and fixed body (16) constraint are down to by self material stress effect and elastic deformation repeatedly.
2. highly sensitive optical-fiber type vibration transducer according to claim 1, is characterized in that: also comprise with whipple hammer (9) and do not produce relative to each other mutually the barrier post (8) of electric field action power or magnetic fields power; All barrier posts (8) are packed in machine box (12) uniform around whipple hammer (9) hoop, do not contact and do not contact with static whipple hammer (9) mutually each other, but simultaneously again by with the discontiguous fiber optic loop of barrier post (8) (10) around; When whipple hammer (9) is when swinging, distance between any two barrier posts (8) can not be through the gap between it by being advisable, so that whipple hammer (9) is limited in by barrier post (8) the interior swing of regional extent that barrier post (8) is surrounded with whipple hammer (9); Two suspention lines pass respectively the gap between barrier post (8) and do not contact with arbitrary barrier post (8) when static.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420295420.2U CN203981265U (en) | 2014-06-04 | 2014-06-04 | Highly sensitive optical-fiber type vibration transducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420295420.2U CN203981265U (en) | 2014-06-04 | 2014-06-04 | Highly sensitive optical-fiber type vibration transducer |
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| Publication Number | Publication Date |
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| CN203981265U true CN203981265U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420295420.2U Withdrawn - After Issue CN203981265U (en) | 2014-06-04 | 2014-06-04 | Highly sensitive optical-fiber type vibration transducer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236694A (en) * | 2014-06-04 | 2014-12-24 | 新疆华讯科技开发有限公司 | Optical fiber type vibrating sensor high in sensitivity |
-
2014
- 2014-06-04 CN CN201420295420.2U patent/CN203981265U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236694A (en) * | 2014-06-04 | 2014-12-24 | 新疆华讯科技开发有限公司 | Optical fiber type vibrating sensor high in sensitivity |
| CN104236694B (en) * | 2014-06-04 | 2017-03-22 | 中科华讯科技开发有限公司 | Optical fiber type vibrating sensor high in sensitivity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20170322 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |