CN202614411U - Distributed-type optical fiber temperature measurement system - Google Patents
Distributed-type optical fiber temperature measurement system Download PDFInfo
- Publication number
- CN202614411U CN202614411U CN201220113495.5U CN201220113495U CN202614411U CN 202614411 U CN202614411 U CN 202614411U CN 201220113495 U CN201220113495 U CN 201220113495U CN 202614411 U CN202614411 U CN 202614411U
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- optical fiber
- distributed
- measurement system
- temperature measurement
- fiber temperature
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Abstract
The utility model relates to a distributed-type optical fiber temperature measurement system. The distributed-type optical fiber temperature measurement system is characterized in that the distributed-type optical fiber temperature measurement system includes a laser, an optical path switcher, an optical fiber, a laser driver, a photoelectric converter, a signal amplifier, a digital balancer, a trigger and a computer. The optical fiber is connected with the optical path switcher. The optical path switcher, the photoelectric converter, the signal amplifier and the digital balancer are connected together successively. The digital balancer, the trigger, the laser driver, the laser and the photoelectric converter are connected together successively. The digital balancer is also connected with the computer. Compared with the prior art, the distributed-type optical fiber temperature measurement system provided by the utility model has advantages of good electromagnetic interference resistance, good high pressure resistance, good anti-explosion performance, good anti-flaming performance, small size, long measurement range and the like.
Description
Technical field
The utility model relates to a kind of measuring system of electric system, especially relates to a kind of distributed optical fiber temperature measuring system.
Background technology
Cable generates heat because of core flows through big electric current in operational process.The temperature of monitoring cable both can have been obtained the working condition of cable insulation, and then calculated the current-carrying capacity of cable line.Distribution type fiber-optic on-line temperature monitoring technology be widely used, the distributed temperature measuring of comparative maturity technology.
Existing light temperature sensing device is made up of laser driver, laser instrument, isochronous controller, coupling mechanism, reference optical fiber, light filter, photoelectric commutator, signal amplifier, data acquisition unit and computing machine.In the existing distributed fiber optic temperature measurement system, be prone to exist electromagnetic interference (EMI) by force, not high pressure resistant, firing and explosion prevention is limited in one's ability, size is big, measuring distance falls short of etc. shortcoming.
The utility model content
The purpose of the utility model is exactly that a kind of anti-electromagnetism, high pressure resistant, explosion-proof, anti-flaming, size is little, measuring distance is long distributed optical fiber temperature measuring system are provided in order to overcome the defective that above-mentioned prior art exists.
The purpose of the utility model can realize through following technical scheme:
A kind of distributed optical fiber temperature measuring system; It is characterized in that; Comprise laser instrument, light path switch, optical fiber, laser driver, photoelectric commutator, signal amplifier, digital equalizer, trigger and computing machine; Described optical fiber is connected with the light path switch; Described light path switch, photoelectric commutator, signal amplifier, digital equalizer connect successively, and described digital equalizer, trigger, laser driver, laser instrument, photoelectric commutator connect successively, and described digital equalizer is connected with computing machine.
Temperature sensor is evenly arranged respectively on the described optical fiber.
Compared with prior art, the utlity model has anti-electromagnetism, high pressure resistant, explosion-proof, anti-flaming, advantage such as size is little, measuring distance is long.
Description of drawings
Fig. 1 is the system architecture synoptic diagram of the utility model.
Among the figure: 1-laser instrument, 2-light path switch, 3-optical fiber, 4-laser driver, 5-trigger, 6-photoelectric commutator, 7-signal amplifier, 8-digital equalizer, 9-computing machine.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
As shown in Figure 1; A kind of distributed optical fiber temperature measuring system; Comprise laser instrument 1, light path switch 2, optical fiber 3, laser driver 4, photoelectric commutator 6, signal amplifier 7 and computing machine 9, measuring system also comprises digital equalizer 8 and trigger 5, and laser instrument 1 connects optical fiber 3 through light path switch 2; One end of signal amplifier 7 connects light path switch 6; The other end connects digital equalizer 8, and an end of digital equalizer 8 connects computing machine 9, and the other end connects laser instrument 1 through trigger 5, laser driver 4 successively.
Optical fiber 3 both as sensor, again as signal transmission passage, can be measured cable temperature completely through on the whole piece cable line, laying optical fiber in real time in whole temperature measurement system.
The concrete application of distributed optical fiber temperature measuring system mainly is divided into 3 kinds of situation: install thermometric optical fiber additional, lay thermometric optical fiber in the high-voltage cable metal sheath inboard and in the high-tension cable conductor, preset thermometric optical fiber at the high-voltage cable road surfaces that has put into operation.
Through the on-line monitoring of distributed optical fiber temperature measuring system, can find in the operational process that cable temperature is too high, abnormal information such as breakdown fault omen, ground wire are stolen to cable temperature; Simultaneously, monitoring result for reasonable adjustment current-carrying capacity of cable with prevent that cable line and tunnel fire hazard have important directive function.
This technology has anti-electromagnetism, high pressure resistant, explosion-proof, anti-flaming, advantage such as size is little, measuring distance is long.
Claims (2)
1. distributed optical fiber temperature measuring system; It is characterized in that; Comprise laser instrument, light path switch, optical fiber, laser driver, photoelectric commutator, signal amplifier, digital equalizer, trigger and computing machine; Described optical fiber is connected with the light path switch; Described light path switch, photoelectric commutator, signal amplifier, digital equalizer connect successively, and described digital equalizer, trigger, laser driver, laser instrument, photoelectric commutator connect successively, and described digital equalizer is connected with computing machine.
2. a kind of distributed optical fiber temperature measuring according to claim 1 system is characterized in that, is evenly distributed with temperature sensor on the described optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220113495.5U CN202614411U (en) | 2012-03-22 | 2012-03-22 | Distributed-type optical fiber temperature measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220113495.5U CN202614411U (en) | 2012-03-22 | 2012-03-22 | Distributed-type optical fiber temperature measurement system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202614411U true CN202614411U (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220113495.5U Expired - Lifetime CN202614411U (en) | 2012-03-22 | 2012-03-22 | Distributed-type optical fiber temperature measurement system |
Country Status (1)
| Country | Link |
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| CN (1) | CN202614411U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106019009A (en) * | 2016-05-20 | 2016-10-12 | 国网天津市电力公司 | Cable current-carrying capacity monitoring method and system base on distributed fiber temperature measurement method |
| CN104389588B (en) * | 2014-11-14 | 2017-02-22 | 大连理工大学 | Single-light-source optical fiber distribution temperature and fixed-point pressure measurement system and method |
-
2012
- 2012-03-22 CN CN201220113495.5U patent/CN202614411U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389588B (en) * | 2014-11-14 | 2017-02-22 | 大连理工大学 | Single-light-source optical fiber distribution temperature and fixed-point pressure measurement system and method |
| CN106019009A (en) * | 2016-05-20 | 2016-10-12 | 国网天津市电力公司 | Cable current-carrying capacity monitoring method and system base on distributed fiber temperature measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |
|
| CX01 | Expiry of patent term |