CN103091011A - Optical fiber type force value monitoring device - Google Patents
Optical fiber type force value monitoring device Download PDFInfo
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- CN103091011A CN103091011A CN 201110347756 CN201110347756A CN103091011A CN 103091011 A CN103091011 A CN 103091011A CN 201110347756 CN201110347756 CN 201110347756 CN 201110347756 A CN201110347756 A CN 201110347756A CN 103091011 A CN103091011 A CN 103091011A
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Abstract
An optical fiber type force value monitoring device comprises a shell and an optical fiber bending sensing unit. An opening is arranged on the shell, a movable rod is matched with the opening in a sliding mode, one end of the movable rod is connected with a sliding plate in the shell, and the other end of the movable rod is located outside the shell. The optical fiber bending sensing unit comprises a curvilinear test channel and a test unit, wherein the curvilinear test channel is used for passing through of optical fibers, and the test unit is connected with signal optical fibers and tests, analyzes and processes the power variation of optical signals in the signal optical fibers synchronously. The curvilinear test channel comprises a curvilinear support, a plurality of first deformation teeth and a plurality of second deformation teeth, wherein the plurality of first deformation teeth and the plurality of second deformation teeth are continuously distributed on the two opposite sides of the curvilinear support, a curvilinear channel is formed between the heads of the plurality of first deformation teeth and the plurality of second deformation teeth and used for being passed through by one or a plurality of signal optical fibers, and the first deformation teeth and the second deformation teeth are correspondingly distributed on two sides of the signal optical fibers. The curvilinear test channel is arranged between the inner wall of the shell and the sliding plate. The optical fiber type force value monitoring device has the advantages of micro-bending optical fiber sensing technology of being high in precision, anti-electromagnetic-interference and low in cost.
Description
Technical field
The present invention relates to a kind of fibre-optical sensing device, be specifically related to a kind of optical-fiber type power value monitoring device.
Background technology
The measurement of power value is one of the most general demand, and its application surface is boundless, and the production from the daily life to the industrial or agricultural all needs, and wherein using maximum is resistance strain gage, and its volume is little, cost is low, application is wide, but its shortcoming is also outstanding.Resistance strain gage relies on faint resistance variations to reflect the variation of power value, exist the problems such as nonlinear problem, temperature drift and zero migration, these need accurate bridge diagram to guarantee the accuracy of measuring, when being in strong electromagnetic interference environment, can impact whole test circuit, this not only affects the stability of resistance-strain chip test system, simultaneously to larger adverse effect is also arranged its serviceable life.In addition, use in inflammable and explosive place and also need take special structure, thereby increased cost.
Fiber grating is development in recent years a kind of optical fiber sensing technology faster, with respect to traditional sensing device as the resistance strain gage type, have that precision is high, the life-span is long, anti-electromagnetic interference (EMI), be easy to and the advantages such as microcomputer is connected, but the problems such as the power value sensor based on fiber grating (being called for short FBG here) also has some shortcomings, and as little in dynamic range, monitoring equipment is expensive.Conclusion part is just mentioned in " application of fiber grating in the prestress wire stress measurement " article that " photoelectron laser " the 16th volume the 10th periodical in 2005 is stepped on, " ..., when corresponding prestress steel twist line strain was 5457 μ ε, fracture appearred in FBG.Due to more than the strain of prestress wire can reach 10000 μ ε usually, so the attachment process of FBG need improve ... ".The strain value of the corresponding FBG fracture of mentioning in above-mentioned article is the data in experiment, and under the long-term environment for use of Practical Project, the strain value of corresponding FBG fracture is because the problems such as stress corrosion can be little a lot.On the other hand, the coefficient of linear thermal expansion of Steel material is approximately higher than greatly two orders of magnitude of coefficient of linear thermal expansion based on the FBG of quartz material, and this is also to need one of factor of considering.So, the improvement of the attachment process in FBG strain monitoring engineering need to be satisfied the requirement of many harsh conditions, accuracy and linear problem as test result, long-term stability and the life problems of using, and the problem introduced of coefficient of linear thermal expansion difference, these have all limited its promoting the use of in Practical Project.
Summary of the invention
technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of optical-fiber type power value monitoring device is provided, precision with microbend fiber sensing technology is high, anti-electromagnetic interference (EMI), the advantage that cost is low, and its light path is the totally enclosed good stability that has, large dynamic range, long-life and anti-vibration characteristic, its checkout equipment can use the modal light source-light power meter of fiber optic communication field just passable, make the simple in structure of this power value monitoring device, processing and fabricating is convenient, cost is low and use-pattern is flexible, highly sensitive, result of use is good, and can be applicable to inflammable and explosive place, the possibility occurrence of decrease safent accident, use value is high, strong adaptability.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of optical-fiber type power value monitoring device, comprise a housing and a Fiber bending sensing unit, one opening is arranged on described housing, carriage release lever and opening are slidably matched, one end of described carriage release lever is connected with the slide plate that is positioned at described housing, the other end of described carriage release lever is positioned at outside housing, on described housing with on the carriage release lever that is positioned at outside housing, fixing or coupling arrangement is installed; Described Fiber bending sensing unit comprises the shaped form test channel of passing for signal optical fibre and joins with signal optical fibre and the optical signal power variable quantity in signal optical fibre carried out the test cell of synchronism detection and analyzing and processing; A plurality of distortion teeth one and a plurality of distortion tooth two that described shaped form test channel comprises curved bracket and is laid in continuously relative both sides on described curved bracket, described a plurality of distortion tooth one and a plurality of distortion tooth two are the shaped form passage that between staggered corresponding laying and head both, formation is passed for one or more signal optical fibres, and described distortion tooth one and distortion tooth two correspondences are laid in the both sides of signal optical fibre; Be mounted with the shaped form test channel between described inner walls and slide plate.
Also be mounted with the auxiliary spring in parallel with the shaped form test channel between described slide plate and inner walls.
Settling respectively between described slide plate two faces relative with enclosure interior is auxiliary spring and shaped form test channel.
Described auxiliary spring is the combination of butterfly spring or butterfly spring.
Described curved bracket is shaped form housing, spring, corrugated tube or cylinder.
Outside described test cell housing, the part of described signal optical fibre is passed the opening on housing wall and is connected with test cell.
Be mounted with the counterbalance spring that is connected in series with the shaped form test channel between described inner walls and slide plate.
Be mounted with the anti-device of turning round on described carriage release lever.
Fluted in described inner walls, fin is arranged on slide plate, described groove and fin are to be slidably matched.
The present invention compared with prior art has the following advantages:
1, simple in structure, processing and fabricating is easy, input cost is low and use-pattern is flexible, highly sensitive.
2, by adopting the monitoring device based on the optical fiber micro-bending sensing technology can improve measuring accuracy, and have good anti-electromagnetic interference capability, corrosion resistance, have simultaneously good shock resistance, be suitable for the Practical Project environmental baseline.
3, its totally enclosed light path detection has improved stability, the reliability of Fibre Optical Sensor unit, has increased the security of power value sensing device, and has been suitable for being applied in inflammable and explosive place.
4, adopt special optical fiber serviceable life of extended fiber sensing unit significantly, as adopting the carbon coated optical fiber in 200 years Theoretical Design life-spans, can greatly reduce maintenance cost.
5, power value sensing device of the present invention has larger dynamic range, and changes different auxiliary springs and can detect different power value scopes, has more wide application prospect.
In sum, the present invention is simple in structure, reasonable in design, processing and fabricating convenient, cost is low and use-pattern is flexible, highly sensitive, the monitoring dynamic range is large, and practical value is high, and is suitable for inflammable and explosive and the chamber electromagnetic interference environment, the generation of Accident prevention has broad application prospects.
Below by drawings and Examples, the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the structural representation of shaped form test channel in embodiment 1.
Fig. 3 is the structural representation of curved bracket in embodiment 1.
Fig. 4 is the structural representation of shaped form test channel in embodiment 2.
Fig. 5 is the structural representation of shaped form test channel in embodiment 3.
Fig. 6 is the local structure for amplifying schematic diagram at A place in Fig. 5.
Fig. 7 is the structural representation of shaped form test channel in embodiment 4.
Fig. 8 is that Fig. 7 is along A-A ' cross-sectional view.
The structural representation of Fig. 9 embodiment of the present invention 5.
The structural representation of Figure 10 embodiment of the present invention 6.
The structural representation of Figure 11 embodiment of the present invention 7.
Description of reference numerals:
The 1-optical cable; The 2-housing; The 3-top cover;
4-1-is out of shape tooth one; 4-2-is out of shape tooth two;
The 5-test cell; 6-shaped form test channel; The 7-pulling eye; The 8-draw ring;
The 9-auxiliary spring; The 10-carriage release lever; The 11-counterbalance spring; The 12-slide plate; The 13-fin;
The anti-device of turning round of 14-; The 15-butterfly spring; The 16-groove; 19-shaped form housing;
The 33-signal optical fibre; The 38-spring; The 40-corrugated tube;
The 42-tube wall; The 36-cylinder; The 37-gap.
Embodiment
A kind of optical-fiber type power value monitoring device as shown in Fig. 1,2 and 3 comprises a housing 2, and top cover 3 is arranged on housing 2, also comprises a Fiber bending sensing unit; On described housing 2, an opening is arranged, a carriage release lever 10 is slidably matched with opening, one end of described carriage release lever 10 is connected with the slide plate 12 that is positioned at described housing 2, the other end of described carriage release lever 10 is positioned at outside housing 2, on described housing 2 with on the carriage release lever 10 that is positioned at outside housing 2, pulling eye 7 is installed; Described Fiber bending sensing unit comprises the shaped form test channel 6 of passing for signal optical fibre 33 and joins with signal optical fibre 33 and the optical signal power variable quantity in signal optical fibre 33 carried out the test cell 5 of synchronism detection and analyzing and processing, preferably, test cell 5 is positioned at beyond housing 2; A plurality of distortion tooth one 4-1 and a plurality of distortion tooth two 4-2 that described shaped form test channel 6 comprises curved bracket and is laid in continuously relative both sides on described curved bracket, described a plurality of distortion tooth one 4-1 and a plurality of distortion tooth two 4-2 are the shaped form passage that between staggered corresponding laying and head both, formation is passed for one or more signal optical fibres 33, and described distortion tooth one 4-1 and distortion tooth two 4-2 correspondences are laid in the both sides of signal optical fibre 33; Be mounted with shaped form test channel 6 at described housing 2 inwalls and 12, slide plate.
In the present embodiment, curved bracket is shaped form housing 19, and a plurality of distortion tooth one 4-1 and a plurality of distortion tooth two 4-2 correspondences are laid on the inwall of shaped form housing 19, and the part of signal optical fibre 33 is passed housing 2 and is connected with test cell 5 by optical cable 1.Preferably, also be mounted with in housing 2 inside the counterbalance spring 11 that is connected in series with shaped form test channel 6, the other end of counterbalance spring 11 and housing 2 inwalls join.Because the existence of counterbalance spring 11 can further increase the scope that carriage release lever 10 can be detected, namely can detect the larger displacement of driving stem 10.
Preferably, be mounted with on described carriage release lever 10 and anti-turn round device 14, turn round by anti-the power value that device 14 is eliminated rotation when the revolving force value is arranged.
Preferably, fluted 16 at described housing 2 inwalls, fin 13 is arranged on slide plate 12, described groove 16 and fin 13 are to be slidably matched.
Preferably, be filled with material water-proof material around described signal optical fibre 33.As greasy for preventing water or the adhesive that blocks water, prevent hydrone or other impurity to the erosion of signal optical fibre 33, extend the serviceable life of signal optical fibre 33.
Preferably, described signal optical fibre 33 can adopt the special optical fibers such as carbon coated optical fiber, pi coated fiber, metallic coating signal optical fibre, thin footpath optical fiber.
As shown in Figure 4, the present embodiment is as different from Example 1: the curved bracket that comprises in described shaped form test channel 6 is spring 38, a plurality of distortion tooth one 4-1 and a plurality of distortion tooth two 4-2 correspondences are laid in spring 38 between the two adjacent rings spring wire, and distortion tooth one 4-1 and the two interlaced layings of 4-2 of distortion tooth.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
As illustrated in Figures 5 and 6, the present embodiment is as different from Example 1: the curved bracket that comprises in described shaped form test channel 6 is corrugated tube 40, in distortion tooth one 4-1 and distortion tooth two 4-2 correspondences are laid on the tube wall 42 of corrugated tube 40 on the two opposite side surfaces of recess, and distortion tooth one 4-1 and the two interlaced layings of 4-2 of distortion tooth.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
Embodiment 4
As shown in Fig. 7 and 8, the present embodiment as different from Example 1: described curved bracket 10 is cylinder 36, is distributed with gap 37 on the sidewall of cylinder 36, and 37 both sides up and down are laid with distortion tooth one 4-1 and distortion tooth two 4-2 of interlaced correspondence in the gap.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
As shown in Figure 9, the present embodiment as different from Example 1: also be mounted with the auxiliary spring in parallel with shaped form test channel 69 between described slide plate 12 and housing 2 inwalls.Due to the difference of power value F scope, can select suitable auxiliary spring 9 to make the scope that the distortion of shaped form test channel 6 can adaptive faculty value F, thereby make test result more accurate.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
As shown in figure 10, the present embodiment as different from Example 1: also be mounted with the combination that the butterfly spring in parallel with shaped form test channel 6 15 consists of between described slide plate 12 and housing 2 inwalls.Butterfly spring 15 has the advantages that the holding capacity value is large, distortion is little, can monitor larger power value F by the combination of using butterfly spring 15 to consist of.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
As shown in figure 11, the present embodiment as different from Example 1: settling respectively between inner relative two faces of described slide plate 12 and housing 2 is auxiliary spring 9 and shaped form test channel 6.Thereby monitor in the time of can being pressure-acting to power value F.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
The above; it is only preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, every any simple modification, change and equivalent structure of above embodiment being done according to the technology of the present invention essence changes, and all still belongs in the protection domain of technical solution of the present invention.
Claims (9)
1. optical-fiber type power value monitoring device, it is characterized in that: comprise a housing and a Fiber bending sensing unit, one opening is arranged on described housing, carriage release lever and opening are slidably matched, one end of described carriage release lever is connected with the slide plate that is positioned at described housing, the other end of described carriage release lever is positioned at outside housing, on described housing with on the carriage release lever that is positioned at outside housing, fixing or coupling arrangement is installed; Described Fiber bending sensing unit comprises the shaped form test channel of passing for signal optical fibre and joins with signal optical fibre and the optical signal power variable quantity in signal optical fibre carried out the test cell of synchronism detection and analyzing and processing; A plurality of distortion teeth one and a plurality of distortion tooth two that described shaped form test channel comprises curved bracket and is laid in continuously relative both sides on described curved bracket, described a plurality of distortion tooth one and a plurality of distortion tooth two are the shaped form passage that between staggered corresponding laying and head both, formation is passed for one or more signal optical fibres, and described distortion tooth one and distortion tooth two correspondences are laid in the both sides of signal optical fibre; Be mounted with the shaped form test channel between described inner walls and slide plate.
2. a kind of optical-fiber type power value monitoring device according to claim 1 is characterized in that: also be mounted with the auxiliary spring in parallel with the shaped form test channel between described slide plate and inner walls.
3. a kind of optical-fiber type power value monitoring device according to claim 1 is characterized in that: settling respectively between described slide plate two faces relative with enclosure interior is auxiliary spring and shaped form test channel.
4. according to claim 2 or 3 described a kind of optical-fiber type power value monitoring devices, it is characterized in that: described auxiliary spring is the combination of butterfly spring or butterfly spring.
5. according to 4 described a kind of optical-fiber type power value monitoring devices of claim, it is characterized in that: described curved bracket is shaped form housing, spring, corrugated tube or cylinder.
6. a kind of optical-fiber type power value monitoring device according to claim 1, it is characterized in that: outside described test cell housing, the part of described signal optical fibre is passed the opening on housing wall and is connected with test cell.
7. a kind of optical-fiber type power value monitoring device according to claim 1, is characterized in that: be mounted with the counterbalance spring that is connected in series with the shaped form test channel between described inner walls and slide plate.
8. a kind of optical-fiber type power value monitoring device according to claim 1, is characterized in that: be mounted with the anti-device of turning round on described carriage release lever.
9. a kind of optical-fiber type power value monitoring device according to claim 1 is characterized in that: fluted in described inner walls, fin is arranged on slide plate, and described groove and fin are to be slidably matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110347756 CN103091011A (en) | 2011-11-07 | 2011-11-07 | Optical fiber type force value monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110347756 CN103091011A (en) | 2011-11-07 | 2011-11-07 | Optical fiber type force value monitoring device |
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| CN103091011A true CN103091011A (en) | 2013-05-08 |
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| CN 201110347756 Pending CN103091011A (en) | 2011-11-07 | 2011-11-07 | Optical fiber type force value monitoring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390600A (en) * | 2014-11-19 | 2015-03-04 | 中国航空工业集团公司沈阳飞机设计研究所 | Design method of strain transducer applicable to large-deformation flexible structure |
| CN110868250A (en) * | 2018-08-28 | 2020-03-06 | 中国电信股份有限公司 | Method and system for determining relevant information of access equipment |
| CN111678455A (en) * | 2020-07-16 | 2020-09-18 | 山东舜感光电科技有限公司 | Memorable metal optical fiber strain sensor |
-
2011
- 2011-11-07 CN CN 201110347756 patent/CN103091011A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390600A (en) * | 2014-11-19 | 2015-03-04 | 中国航空工业集团公司沈阳飞机设计研究所 | Design method of strain transducer applicable to large-deformation flexible structure |
| CN110868250A (en) * | 2018-08-28 | 2020-03-06 | 中国电信股份有限公司 | Method and system for determining relevant information of access equipment |
| CN111678455A (en) * | 2020-07-16 | 2020-09-18 | 山东舜感光电科技有限公司 | Memorable metal optical fiber strain sensor |
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Application publication date: 20130508 |