CN103196590B - Optical fiber winding device of spatial resolution calibration of distributed type optical fiber temperature sensing system - Google Patents
Optical fiber winding device of spatial resolution calibration of distributed type optical fiber temperature sensing system Download PDFInfo
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- CN103196590B CN103196590B CN201310085474.6A CN201310085474A CN103196590B CN 103196590 B CN103196590 B CN 103196590B CN 201310085474 A CN201310085474 A CN 201310085474A CN 103196590 B CN103196590 B CN 103196590B
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- optical fiber
- front panel
- spatial resolution
- temperature sensing
- sensing system
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 41
- 238000004804 winding Methods 0.000 title claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 description 14
- 238000002474 experimental method Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses an optical fiber winding device of spatial resolution calibration of a distributed type optical fiber temperature sensing system. The lower ends of two fixing boards are respectively installed on two side faces of a bottom board, a front panel and a rear panel which are the same in diameter are connected through a rotating shaft, a drive gear is fixed on the rotating shaft, a rotary disc is fixed on the section, extruding out of the front panel, of the rotating shaft, the rotary disc is provided with a pointer, the drive gear, three same driven gears and an inner gear are fixed on the inner side of the front panel through a gear fixing board which is the same with the front panel in diameter, the drive gear drives the inner gear to rotate through the three driven gears which are installed at equal intervals, a dial is engraved in the outer side face of the inner gear, a window through which scales of the inner gear can be observed is formed in the front panel, and the front panel and the rear panel are embedded into two grooves in the inner sides of the two fixing boards and extend to the bottom board. By means of the optical fiber winding device of the spatial resolution calibration of the distributed type optical fiber temperature sensing system, the problem that spatial resolution of the distributed type optical fiber temperature sensing system cannot be accurately measured when the calibration is conducted is solved.
Description
Technical field
The present invention relates to a kind of Optical Fiber Winding device, particularly relate to a kind of Optical Fiber Winding device of distributed optical fiber temperature sensing system spatial resolution calibration.
Background technology
Distributed optical fiber temperature sensing system, is mainly used temperature sensing optical fiber as temperature probe.Because optical fiber has antiacid anticorrosive high temperature resistantly, and simultaneously detection fiber be laid the feature of place's each point temperature, and therefore, this system has been widely used in tunnel, subway, power plant, chemical plant etc. and has used the large scale industry scene that legacy equipment cannot thermometric.Because the application scenario of distributed optical fiber temperature sensing system is more and more, also can be more and more higher to the requirement of this index of spatial resolution, therefore, for manufacturer and user, putting into effect corresponding calibrating standard is all very urgent work.
The spatial resolution of distributed optical fiber temperature sensing system is a long measure, refers to the accurately minimum fiber length of thermometric of distributed optical fiber temperature sensing system, distributed temperature measuring system in the market, and the index of this parameter is conventionally 3 meters of left and right.That at whole optical fiber temperature measurement system, studies is early stage, using the 10%-90% rising edge that records waveform as spatial resolution.This define method is actual similar with the response time define method of other traditional temperature measuring equipments, rise time is distributed temperature measuring system and temperature is made to the time of effective reflection, then system is again according to the corresponding relation of time and distance, calculate the bee-line that can make effecting reaction, i.e. spatial resolution.And in the middle of real system, determine that the method that spatial resolution is comparatively traditional mainly contains experimental method and theory method.Experimental method refers to by optical fiber is coiled into ring-type, fiber optic loop is put into Water Tank with Temp.-controlled and do thermometric experiment, simultaneously in each experimental group, constantly reduce the length of fiber optic loop, until can not Measurement accuracy water temperature, obtain correctly recording the fiber optic loop length of water temperature, this is defined as to spatial resolution.Another kind of theoretical method is from hardware, comprehensively comprise that the factors such as AD sampling time, APD processing time, pulse width are on the impact of the shortest thermometric time, calculate the shortest thermometric time of the normal work such as the parts that can guarantee AD, APD, thereby obtain corresponding spatial resolution.And at present in experiment, often need a plurality of fiber optic loop of each length of coiling, and increased the difficulty of experiment, and precision is lower, reduced the accuracy of experiment.
Summary of the invention
The object of the present invention is to provide the Optical Fiber Winding device of a kind of distributed optical fiber temperature sensing system spatial resolution calibration, solve when calibration and determine System spatial resolution with experimental method, problem that cannot convenient and swift Measurement accuracy.
For solving above technical matters, the present invention is achieved by the following technical solutions:
The present invention includes: two fixed heads, base plate, rotating shaft, rotating disc, front panel, rear panel, driving gear, three identical follower gears, annular wheel, gear fixed head and index dials, the lower end of two fixed heads is arranged on respectively the two sides of base plate, the identical front panel of diameter is connected with rotating shaft with rear panel, in rotating shaft between front panel and rear panel, be fixed with driving gear, stretch out in the rotating shaft outside front panel fixedly rotating disc, on rotating disc with pointer, the gear fixed head identical with front panel diameter is by driving gear, three identical follower gears, annular wheel is fixed on front panel inner side, three follower gears that driving gear is installed by decile drive annular wheel to rotate, on annular wheel lateral surface, be carved with index dial, on front panel, have the window that can observe annular wheel scale, the front panel that diameter is identical and rear panel embed two grooves of two fixed head inner sides until on base plate.
In the middle of described two fixed heads, all have fiber-optic wire groove, two fixed head correspondences have the upper and lower horizontal draw-in groove of energy regulating base board.
Described base plate both sides have is convenient to the hole that optical fiber passes through.
The beneficial effect that the present invention has is:
The present invention is by design gear kinematic train, and rotating rotating disc can increase easily or reduce the length of optical fiber used and show that in real time institute is around fiber lengths.Cannot be convenient and swift while using the spatial resolution calibration of this distributed optical fiber temperature sensing system can effectively solve calibration with optical fiber wind accurately by the problem of the spatial resolution of experimental method measurement distributed optical fiber temperature sensing system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is rotating disc of the present invention and dependency structure schematic diagram.
Fig. 3 is fixed head of the present invention and base plate schematic diagram.
Fig. 4 is gear structure schematic diagram of the present invention.
Fig. 5 is gear side view of the present invention.
In figure: 1, fixed head, 2, base plate, 3, rotating shaft, 4, rotating disc, 5, front panel, 6, rear panel, 7, driving gear, 8, follower gear, 9, annular wheel, 10, gear fixed head, 11, index dial.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, the present invention includes two fixed heads 1, base plate 2, rotating shaft 3, rotating disc 4, front panel 5, rear panel 6, driving gear 7, three identical follower gears 8, annular wheel 9, gear fixed head 10 and index dials 11, the lower end of two fixed heads 1 is arranged on respectively the two sides of base plate 2, the identical front panel 5 of diameter is connected with rear panel 6 use rotating shafts 3, in the rotating shaft 3 that front panel 5 and rear panel are 6, be fixed with driving gear 7, stretch out in the rotating shaft 3 outside front panel 5 fixedly rotating disc 4, on rotating disc 4 with pointer, the gear fixed head 10 identical with front panel diameter is by driving gear 7, three identical follower gears 8, annular wheel 9 is fixed on front panel inner side, three follower gears 8 that driving gear 7 is installed by decile drive annular wheel 9 to rotate, on annular wheel 9 lateral surfaces, be carved with index dial 11, on front panel 5, have the window that can observe annular wheel 9 scales, two grooves that the front panel 5 that diameter is identical and rear panel 6 embed two fixed head 1 inner sides are until on base plate 2.
As shown in Figure 3, in the middle of described two fixed heads 1, all have fiber-optic wire groove, two fixed head 1 correspondences have the upper and lower horizontal draw-in groove of energy regulating base board 2.
As shown in Figure 3, described base plate 2 both sides have and are convenient to the hole that optical fiber passes through.
Principle of work of the present invention:
(1) by one section in whole piece optical fiber, be coiled into the circle that radius ratio front panel 5 diameters are large, pack in the rotating shaft between gear fixed head and rear panel, adjust fiber optic loop radius, the rotating shaft of can fitting is around a circle, then fixing.
(2) one end of optical fiber is drawn by the wire lead slot on a fixed head of the hole in base plate one side and base plate one side opening homonymy, the other end of optical fiber is drawn by the wire lead slot on another piece fixed head of the hole on base plate opposite side and opposite side base plate homonymy.Suppose that optical fiber is c rice by the length of any side fixed head 1, the length by base plate 2 is d rice.
(3) hold optical fiber one end outside fixed head 1, rotate rotating disc 4, drive rotating shaft 3 and driving gear 7, follower gear 8, annular wheel 9 to rotate simultaneously, because index dial 11 is placed on annular wheel 9, and rotate with annular wheel 9.Due to the drive connection of gear, when driving gear 7 turns around, 9 of annular wheels rotate a low-angle, the number of turns turning over computing scale dish 11.Therefore,, by the window of observation annular wheel 9 scales opened on front panel 5, can read the reading of the index dial 11 being arranged on annular wheel 9, the number of turns that rotating disc 4 turns over.And rotating disc 4 can drive rotating shaft 3 to rotate, by the pointer on rotating disc 4, can read the segmentation scale of front panel 5, the fiber lengths being wound around with accurate Calculation.If dial reading a circle, rotating disc 4 full scales are n, and pointer points to digital b, rotating shaft girth d rice, and the fiber lengths being wound around is QUOTE
?
.For example work as a=3, b=10, n=20, d=0.25 rice, the fiber lengths that is wound around is 1.125 meters.
(5) after complete optical fiber, fixed head 1 and base plate 2 are removed, fiber optic loop is put into together with rotating shaft to Water Tank with Temp.-controlled and carried out calibration experiments.The fiber lengths being immersed in tank is L ', L '=L+2c+d.
(6) if in calibration process, need to adjust fiber optic loop length, repeat (1) to (5) step, then carry out calibration experiments.
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change that the present invention is made, all fall into protection scope of the present invention.
Claims (3)
1. the Optical Fiber Winding device of distributed optical fiber temperature sensing system spatial resolution calibration, it is characterized in that, comprising: two fixed heads (1), base plate (2), rotating shaft (3), rotating disc (4), front panel (5), rear panel (6), driving gear (7), three identical follower gears (8), annular wheel (9), gear fixed head (10) and index dial (11), the lower end of two fixed heads (1) is arranged on respectively the two sides of base plate (2), the front panel that diameter is identical (5) is connected with rotating shaft (3) with rear panel (6), in rotating shaft (3) between front panel (5) and rear panel (6), be fixed with driving gear (7), stretch out the upper fixedly rotating disc (4) of the outer rotating shaft (3) of front panel (5), rotating disc (4) is upper with pointer, the gear fixed head (10) identical with front panel diameter is by driving gear (7), three identical follower gears (8), annular wheel (9) is fixed on front panel inner side, three follower gears (8) that driving gear (7) is installed by decile drive annular wheel (9) to rotate, on annular wheel (9) lateral surface, be carved with index dial (11), on front panel (5), have the window that can observe annular wheel (9) scale, the front panel that diameter is identical (5) and rear panel (6) embed two grooves of two fixed heads (1) inner side until on base plate (2).
2. the Optical Fiber Winding device that a kind of distributed optical fiber temperature sensing system spatial resolution according to claim 1 is calibrated, it is characterized in that: in the middle of described two fixed heads (1), all have fiber-optic wire groove, two fixed heads (1) correspondence has can the upper and lower horizontal draw-in groove of regulating base board (2).
3. the Optical Fiber Winding device of a kind of distributed optical fiber temperature sensing system spatial resolution calibration according to claim 1, is characterized in that: described base plate (2) both sides have is convenient to the hole that optical fiber passes through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310085474.6A CN103196590B (en) | 2013-03-18 | 2013-03-18 | Optical fiber winding device of spatial resolution calibration of distributed type optical fiber temperature sensing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310085474.6A CN103196590B (en) | 2013-03-18 | 2013-03-18 | Optical fiber winding device of spatial resolution calibration of distributed type optical fiber temperature sensing system |
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| Publication Number | Publication Date |
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| CN103196590A CN103196590A (en) | 2013-07-10 |
| CN103196590B true CN103196590B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310085474.6A Expired - Fee Related CN103196590B (en) | 2013-03-18 | 2013-03-18 | Optical fiber winding device of spatial resolution calibration of distributed type optical fiber temperature sensing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111060215A (en) * | 2019-12-30 | 2020-04-24 | 国兴汇金(深圳)科技有限公司 | Method for detecting spatial resolution of distributed optical fiber temperature sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61230103A (en) * | 1985-04-03 | 1986-10-14 | Electric Power Dev Co Ltd | Method for winding optical cable around aerial wire |
| CN100389332C (en) * | 2006-06-06 | 2008-05-21 | 北京航空航天大学 | Fiber collecting mechanism for automatic optical fiber winding machine |
| CN101566508B (en) * | 2009-06-01 | 2011-07-20 | 南京大学 | Distributed optical fiber temperature sensor with high spatial resolution |
| CN201877217U (en) * | 2010-09-26 | 2011-06-22 | 广州岭南电缆有限公司 | Automatic back-twisting composite optical fiber winding device |
| CN102914300B (en) * | 2012-09-28 | 2016-08-24 | 武汉长盈通光电技术有限公司 | A kind of rotation ring winding machine structure |
| CN203216640U (en) * | 2013-03-18 | 2013-09-25 | 中国计量学院 | Winding device for calibrating spatial resolution of distributed fiber temperature sensing system |
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