CN201653614U - Intensity demodulation-type optical fiber torque sensor for lamp cap - Google Patents
Intensity demodulation-type optical fiber torque sensor for lamp cap Download PDFInfo
- Publication number
- CN201653614U CN201653614U CN2010201511618U CN201020151161U CN201653614U CN 201653614 U CN201653614 U CN 201653614U CN 2010201511618 U CN2010201511618 U CN 2010201511618U CN 201020151161 U CN201020151161 U CN 201020151161U CN 201653614 U CN201653614 U CN 201653614U
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- China
- Prior art keywords
- optical fiber
- homogeneous
- rotary shaft
- lamp cap
- rotating shaft
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Abstract
The utility model relates to an intensity demodulation-type optical fiber torque sensor for a lamp cap, which overcomes the defects of lower accuracy degree and less possibility of realizing dynamic online detection of the traditional measurement equipment. The sensor comprises a homogeneous circular rotary shaft, a metal wire, a sensing optical fiber, a lamp cap fixture and a guiding optical fiber, wherein either end of the homogeneous circular rotary shaft is fixedly connected with the lamp cap fixture and is arranged coaxial with the lamp cap fixture; the metal wire is closely attached to the surface of the homogeneous circular rotary shaft, and an included angle theta1 is formed between the metal wire and the axial direction of the homogeneous circular rotary shaft; the sensing optical fiber is uniformly wound around the surface of the homogeneous circular rotary shaft, and an included angle theta2 is formed between the sensing optical fiber and the axial direction of the homogeneous circular rotary shaft; and the metal wire and the sensing optical fiber intersect on the surface of the homogeneous circular rotary shaft. The optical fiber torque sensor adopts an all-fiber structure and can work reliably for a long time in the environment with great electromagnetic interference; in addition, the optical fiber torque sensor has the advantages of higher accuracy and lower cost.
Description
Technical field
The utility model belongs to measuring technology and sensory field of optic fibre, is specifically related to a kind of intensity demodulation lamp cap torque optical sensor.
Background technology
Country payes attention to the specifications of quality of product safety performance, and in the electrical lighting industry, the safety index of lamp holder physical strength is classified the state compulsion test item as; The detection of lamp holder mechanical strength properties index torque resistant power, national standard explicitly calls for.Along with development of science and technology, the microminiaturization of detection system, intellectuality, networking will become trend, and traditional Static Detection technology will be substituted by new dynamic online measuring technique.
At present the lamp holder torque resistant force transducer that uses is generally strain gauge transducer, and this type of sensor adopts resistance strain gage as sensing element usually, has that sensitivity is lower, precision is not high, has bigger non-linear under the great straining force effect; Shortcomings such as output signal is fainter, antijamming capability is relatively poor.Be accompanied by the widespread use of optical fiber sensing technology, lamp cap torque Fibre Optical Sensor achievement in research of new generation is arisen at the historic moment.
Summary of the invention
The purpose of this utility model is that to overcome traditional measurement equipment degree of accuracy not high, is difficult for realizing the defective of dynamic online detection; Providing a kind of can work under strong electromagnetic interference environment reliably and with long-term, simple in structure, and lower-cost intensity demodulation lamp cap torque optical sensor.
The technical scheme that the utility model adopted is as follows:
The utility model comprises the circular rotating shaft of homogeneous, tinsel, sensor fibre, lamp base fixture, guiding fiber.Any end of the circular rotating shaft of homogeneous fixedly connected with lamp base fixture and with the coaxial setting of lamp base fixture, the diameter of described homogeneous circle rotating shaft is D, length is L, 40mm≤D≤50mm, 100mm≤L≤150mm; Tinsel is oblique to be close to around the home on the circular rotating shaft of homogeneous surface, and tinsel is 1,30 °≤θ of θ with the axial angle of the circular commentaries on classics of homogeneous
1≤ 60 °, diameter wiry is d, 0.3mm≤d≤0.4mm; Evenly direction is opposite around the home on the circular rotating shaft of homogeneous surface and with tinsel around the home for sensor fibre, and the axial angle of the circular commentaries on classics of sensor fibre and homogeneous is θ
2, 40 °≤θ
2≤ 50 °, the sensor fibre number of turns around the home is n, 5≤n≤10; Described tinsel and sensor fibre form 3～8 point of crossing on the circular rotating shaft of homogeneous surface.
The utility model compared with prior art has the following advantages:
1. employing all optical fibre structure, can be under strong electromagnetic interference environment reliably and with long-term work;
2. direct output intensity signal only needs simple opto-electronic conversion can obtain the lamp cap torque value; It is fast to measure response, the demodulation techniques maturation;
3. simple in structure, than strain gauge transducer, have higher precision and lower cost;
4. help realizing dynamic online detection, can promote microminiaturization, the intellectuality and networked of detection system.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 measures the embodiment synoptic diagram for lamp cap torque.
Among the figure: 1, the circular rotating shaft of homogeneous, 2, steel wire, 3, multimode optical fiber, 4, lamp base fixture, 5, guiding fiber, 6, light source, 7, detector, 8, light fixture.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
As shown in Figure 1, a kind of intensity demodulation lamp cap torque optical sensor comprises the circular rotating shaft 1 of homogeneous, steel wire 2, multimode optical fiber 3, lamp base fixture 4, guiding fiber 5.The circular rotating shaft 1 of homogeneous is round section, the equally distributed rotating shaft of quality.Lamp base fixture 4 is fixedlyed connected by the right-hand member of the circular rotating shaft of nut and homogeneous, in order to fixing lamp holder; It is 45mm that its diameter of organic glass (perhaps can select aluminium alloy for use) is adopted in the circular rotating shaft of homogeneous, and length is 150mm.Axially being 45 ° and sticking on the circular rotating shaft of the homogeneous surface with seccotine 504 of the circular rotating shaft of steel wire (perhaps can select phosphorus copper wire for use) and homogeneous, the diameter of steel wire (perhaps can select phosphorus copper wire for use) is 0.35mm; The circular rotating shaft of multimode optical fiber and homogeneous axially be 45 ° with tinsel around the home the hand of spiral be oppositely around the home on the circular rotating shaft of homogeneous surface, the two ends of optical fiber stick on the homogeneous circle rotating shaft surface with seccotine 504; The number of turns around the home of multimode optical fiber is 6; Steel wire and multimode optical fiber form 6 point of crossing on the circular rotating shaft of homogeneous surface.
As shown in Figure 2, the light that light source 6 sends is transferred to multimode optical fiber 3 through guiding fiber 5, is detected device 7 and receives.When lamp base fixture 4 is not rotated by external force, so multimode optical fiber 3 can not produce little bending with steel wire 2 contact positions owing to be subjected to the shearing strain of the circular rotating shaft 1 of homogeneous.So the transmission light intensity that detector 7 receives does not change.
When light fixture 8 at up time needle force F
1Drive when rotating down, drive the circular rotating shaft 1 of homogeneous simultaneously by lamp base fixture 4 and rotate.This moment, the other end in the circular rotating shaft 1 of homogeneous applied a reacting force F
2Keep circular rotating shaft 1 relative fixed of homogeneous, the circular rotating shaft 1 of homogeneous makes multimode optical fiber 3 and steel wire 2 contact positions produce little bending because of producing shearing strain everywhere.The moment of torsion difference that lamp holder applies, the micro curving rate peak value of pulse of optical fiber, wide variety difference cause through the optical power loss of multimode optical fiber 3 also different thus.The effect of this moment of torsion makes and is modulated by the light intensity of multimode optical fiber.By measuring the variation of multimode optical fiber 3 its transmitted intensities of little curved back, just can obtain the torque value of lamp holder.
The light path of optical fiber has been hermetic in the utility model, has anti-electromagnetic interference, high sensitivity and does not disturb the characteristics such as tested scene, is adapted at measuring under the adverse circumstances such as light fixture workshop; Compare traditional lamp cap torque sensor, adopt multimode fibre to be easier to realize dynamically online detection of lamp cap torque as measuring cell, and have higher precision and lower cost.
Claims (1)
1. intensity demodulation lamp cap torque optical sensor comprises the circular rotating shaft of homogeneous, tinsel, sensor fibre, lamp base fixture, guiding fiber, it is characterized in that:
Any end of the circular rotating shaft of homogeneous fixedly connected with lamp base fixture and with the coaxial setting of lamp base fixture, the diameter of described homogeneous circle rotating shaft is D, length is L, 40mm≤D≤50mm, 100mm≤L≤150mm; Tinsel is oblique to be close to around the home on the circular rotating shaft of homogeneous surface, and tinsel is θ with the axial angle of the circular commentaries on classics of homogeneous
1, 30 °≤θ
1≤ 60 °, diameter wiry is d, 0.3mm≤d≤0.4mm; Evenly direction is opposite around the home on the circular rotating shaft of homogeneous surface and with tinsel around the home for sensor fibre, and the axial angle of the circular commentaries on classics of sensor fibre and homogeneous is θ
2, 40 °≤θ
2≤ 50 °, the sensor fibre number of turns around the home is n, 5≤n≤10; Described tinsel and sensor fibre form 3～8 point of crossing on the circular rotating shaft of homogeneous surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201511618U CN201653614U (en) | 2010-04-02 | 2010-04-02 | Intensity demodulation-type optical fiber torque sensor for lamp cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201511618U CN201653614U (en) | 2010-04-02 | 2010-04-02 | Intensity demodulation-type optical fiber torque sensor for lamp cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201653614U true CN201653614U (en) | 2010-11-24 |
Family
ID=43118856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201511618U Expired - Fee Related CN201653614U (en) | 2010-04-02 | 2010-04-02 | Intensity demodulation-type optical fiber torque sensor for lamp cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201653614U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806646A (en) * | 2010-04-02 | 2010-08-18 | 中国计量学院 | Intensity demodulation lamp cap torque optical sensor |
| CN105784219A (en) * | 2015-12-17 | 2016-07-20 | 北京希卓信息技术有限公司 | Torque sensor and testing system thereof |
-
2010
- 2010-04-02 CN CN2010201511618U patent/CN201653614U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806646A (en) * | 2010-04-02 | 2010-08-18 | 中国计量学院 | Intensity demodulation lamp cap torque optical sensor |
| CN105784219A (en) * | 2015-12-17 | 2016-07-20 | 北京希卓信息技术有限公司 | Torque sensor and testing system thereof |
| CN105784219B (en) * | 2015-12-17 | 2018-08-28 | 北京希卓信息技术有限公司 | A kind of torque sensor and its test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20120402 |