CN204313997U - A kind of distributing optical fiber sensing pole tower health monitoring device - Google Patents
A kind of distributing optical fiber sensing pole tower health monitoring device Download PDFInfo
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- CN204313997U CN204313997U CN201420771134.9U CN201420771134U CN204313997U CN 204313997 U CN204313997 U CN 204313997U CN 201420771134 U CN201420771134 U CN 201420771134U CN 204313997 U CN204313997 U CN 204313997U
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 23
- 230000036541 health Effects 0.000 title claims abstract description 18
- 238000012806 monitoring device Methods 0.000 title claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 230000005611 electricity Effects 0.000 abstract description 5
- 230000003862 health status Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 238000004458 analytical method Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 abstract description 2
- 238000002405 diagnostic procedure Methods 0.000 abstract description 2
- 238000011156 evaluation Methods 0.000 abstract description 2
- 238000013178 mathematical model Methods 0.000 abstract description 2
- 238000004451 qualitative analysis Methods 0.000 abstract description 2
- 230000001953 sensory effect Effects 0.000 abstract description 2
- 238000000253 optical time-domain reflectometry Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a kind of distributing optical fiber sensing pole tower health monitoring device, relate to sensory field of optic fibre, the equipment of this distributing optical fiber sensing pole tower health monitoring device comprises sensor fibre, light source, modulator, fiber coupler, photo-detector, signal processing module, wireless transmitter module, wireless receiving module, as the wireless monitor system of shaft tower stress health status, the stressed real-time change of shaft tower can be monitored, and according to these data and in conjunction with icing mathematical model, fuzzy logic diagnostic method can qualitative analysis shaft tower health status, with or without icing, quantitative calculating ice covering thickness and prediction icing development trend, the security of operation state of analysis and evaluation transmission line of electricity, and reaching predetermined value alarm, for ensureing that the safe operation of network system has Great significance.
Description
Technical field
The utility model relates to sensory field of optic fibre, particularly a kind of distributing optical fiber sensing pole tower health monitoring device.
Background technology
Along with the continuous progress of human society, daily life is more and more stronger to the dependence of electricity, and transmission of electricity unobstructed is the guarantee of people's normal life, and transmission tower plays relaying action in the line, and the well damage of shaft tower affects the usual of transmission line of electricity.Causing shaft tower to damage main cause has following two kinds: one to be change due to meteorological condition, as icing and strong wind; Two is that the ground deformation that mining subsidence produces mainly contains the movement and distortion of vertical direction, the shearing strain in the movement and distortion of horizontal direction and Earth surface plane.The direct basis to high-voltage transmission line pole tower, shaft tower, span have an impact by the distortion of these earth's surfaces, and cause the distortion of other element of ultra-high-tension power transmission line further, even tower.Because both of these case has a process slowly, by early warning can be sent before shaft tower destroys to the monitoring of the main material STRESS VARIATION of shaft tower, take appropriate measures for power department.So just can avoid destroying and occur or reduce to destroy the loss brought.
If traditional sensor main by by fiber grating as detector, but fiber grating be point-like monitoring, the strained situation of stop position can only be monitored, be interrupted be arranged on shaft tower, the three-dimensional stressing conditions of shaft tower tower body can not be grasped completely.Once shaft tower is not go wrong in fiber grating position, this type detector cannot detect at all.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of distributing optical fiber sensing pole tower health monitoring device, the signal sent from shaft tower top wireless transmitter module is received, to solve the above-mentioned multinomial defect caused in prior art by adopting wireless receiving module.
1. for achieving the above object, the utility model provides following technical scheme: a kind of distributing optical fiber sensing pole tower health monitoring device, comprise sensor fibre, light source, modulator, fiber coupler, photo-detector, signal processing module, wireless transmitter module, wireless receiving module, sensor fibre is laid on shaft tower tower body, modulator is connected with fiber coupler, light source, fiber coupler, photo-detector, signal processing module, wireless transmitter module is connected in series to be encapsulated in a cabinet, form distribution type fiber-optic demodulating system, also be fixed on shaft tower tower body with described Fiber connection, wireless receiving module is placed in the monitoring room of distance shaft tower certain distance, the wireless signal that wireless transmitter module sends in cabinet can be received.
Preferably, described fiber coupler is LC fiber coupler.
Preferably, described photo-detector is semiconductor photodetector.
Preferably, communicate optical signal processor is provided with in described signal processing module.
The beneficial effect of above technical scheme is adopted to be: this distributing optical fiber sensing pole tower health monitoring device is for a kind of Distributed Three-dimensional on-line monitoring of shaft tower stress, utilize distributing optical fiber sensing, optical fiber can be laid along tower body on electric transmission pole tower, whole optical fiber along road as sensor, thus can sensor monitoring to all sites of shaft tower, and pass through signal and the software process of rear end, the three-dimensional model that whole shaft tower is stressed can be made, and accomplish Real-Time Monitoring, just can intuitively find timely once go wrong somewhere, guarantee electrical network is normally run, larger effect can be played.As the wireless monitor system of shaft tower stress health status, the stressed real-time change of shaft tower can be monitored, and according to these data and in conjunction with icing mathematical model, fuzzy logic diagnostic method can qualitative analysis shaft tower health status, with or without icing, quantitatively calculate ice covering thickness and prediction icing development trend, the security of operation state of analysis and evaluation transmission line of electricity, and reaching predetermined value alarm, for ensureing that the safe operation of network system has Great significance.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of a kind of distributing optical fiber sensing pole tower health monitoring device of the utility model;
Fig. 2 is the structural representation of a kind of distributing optical fiber sensing pole tower health monitoring device of the utility model.
Embodiment
The preferred implementation of a kind of distributing optical fiber sensing pole tower health monitoring device of the utility model is described in detail below in conjunction with accompanying drawing.
Fig. 1 and Fig. 2 shows the embodiment of a kind of distributing optical fiber sensing pole tower health monitoring device of the utility model: this distributing optical fiber sensing pole tower health monitoring device, the equipment of described distributing optical fiber sensing pole tower health monitoring device comprises sensor fibre, light source, modulator, fiber coupler, photo-detector, signal processing module, wireless transmitter module, wireless receiving module, whole detecting step is:
As shown in Figure 1, sensor fibre is laid on shaft tower tower body.Light source, fiber coupler, photo-detector, signal processing module, wireless transmitter module is encapsulated in a cabinet, forms distribution type fiber-optic demodulating system, is also fixed on shaft tower tower body.Wireless receiving module is placed in the monitoring room of distance shaft tower certain distance, can receive the wireless signal that wireless transmitter module sends in cabinet.
When laser pulse is propagated in a fiber, can produce backward stimulated Brillouin scattering, scattered light can produce Brillouin frequency shifts, and frequency shift amount is relevant to temperature and stress, its frequency shift amount υ
bwith scattering strength variation delta P
bpass be:
υ
B＝C
σΔσ+C
TΔT
ΔP
B/P
B(0)＝C
σ′Δσ+C
T′ΔT
Wherein Δ σ is the variable quantity of stress, and Δ T is the variable quantity of temperature, C
σand C
tfor Brillouin
The coefficient of strain of frequency displacement and temperature coefficient, C
σ' and C
t' be the coefficient of strain of Brillouin's intensity and temperature coefficient, P
b(0) be the frequency of initial Brillouin intensity light.By calculating above-mentioned two formulas, the variable quantity of corresponding temperature and stress can be calculated easily by frequency shift amount and scattered light intensity variable quantity.
Fig. 2 is the utility model structural representation, utilizes optical time domain reflectometry principle (OTDR) accurately to locate, determines forced position, and constructability personnel inspection keeps in repair.From transmitting signals to the return signal time used, then determining the speed of light in glass substance, just can calculate distance.It is how measuring distance that following formula just describes OTDR.
d＝(c×t)/2n
In this formula, c is light speed in a vacuum, and t after to be signal launch to the T.T. (two values are multiplied divided by the distance after 2 being exactly one way) receiving signal (round trip).Because light is slower than speed in a vacuum in glass, so in order to accurately measuring distance, tested optical fiber must indicate refractive index (n).N is indicated by optical fiber production business.
Just can determine corresponding position according to distance, transfer to wireless transmitter module.In the utility model, by light source, fiber coupler, photo-detector, signal processing module, wireless transmitter module is encapsulated in an airtight cabinet box body, is then fixed on shaft tower tower body.
The data that collect are given wireless receiving module at a distance by radio wave transmission by wireless transmitter module, by rear end Modling model, the three-dimensional model that whole shaft tower is stressed can be made, and accomplish Real-Time Monitoring, and set early-warning parameters, arrive early warning critical value, start the various measures such as sound and light alarm immediately.Power supply can adopt sun power or powered by wind energy in the wild.
Above is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (4)
1. a distributing optical fiber sensing pole tower health monitoring device, it is characterized in that: comprise sensor fibre, light source, modulator, fiber coupler, photo-detector, signal processing module, wireless transmitter module, wireless receiving module, sensor fibre is laid on shaft tower tower body, modulator is connected with fiber coupler, light source, fiber coupler, photo-detector, signal processing module, wireless transmitter module is connected in series to be encapsulated in a cabinet, form distribution type fiber-optic demodulating system, also be fixed on shaft tower tower body with described Fiber connection, wireless receiving module is placed in the monitoring room of distance shaft tower certain distance, the wireless signal that wireless transmitter module sends in cabinet can be received.
2. distributing optical fiber sensing pole tower health monitoring device according to claim 1, is characterized in that: described fiber coupler is LC fiber coupler.
3. distributing optical fiber sensing pole tower health monitoring device according to claim 1, is characterized in that: described photo-detector is semiconductor photodetector.
4. distributing optical fiber sensing pole tower health monitoring device according to claim 1, is characterized in that: be provided with communicate optical signal processor in described signal processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420771134.9U CN204313997U (en) | 2014-12-09 | 2014-12-09 | A kind of distributing optical fiber sensing pole tower health monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420771134.9U CN204313997U (en) | 2014-12-09 | 2014-12-09 | A kind of distributing optical fiber sensing pole tower health monitoring device |
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| CN204313997U true CN204313997U (en) | 2015-05-06 |
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| CN201420771134.9U Expired - Fee Related CN204313997U (en) | 2014-12-09 | 2014-12-09 | A kind of distributing optical fiber sensing pole tower health monitoring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225826A (en) * | 2016-08-01 | 2016-12-14 | 国网山西省电力公司大同供电公司 | A kind of ultra-high-tension power transmission line ice coating state monitoring device and method |
| CN106768526A (en) * | 2016-12-23 | 2017-05-31 | 潘敏 | A kind of crane for steelworks use stress mornitoring system |
| CN112345128A (en) * | 2020-09-22 | 2021-02-09 | 国家电网有限公司 | Mechanical force monitoring and analyzing method for ground wire of overhead transmission line |
-
2014
- 2014-12-09 CN CN201420771134.9U patent/CN204313997U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225826A (en) * | 2016-08-01 | 2016-12-14 | 国网山西省电力公司大同供电公司 | A kind of ultra-high-tension power transmission line ice coating state monitoring device and method |
| CN106768526A (en) * | 2016-12-23 | 2017-05-31 | 潘敏 | A kind of crane for steelworks use stress mornitoring system |
| CN112345128A (en) * | 2020-09-22 | 2021-02-09 | 国家电网有限公司 | Mechanical force monitoring and analyzing method for ground wire of overhead transmission line |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20171209 |