CN203929275U - A kind of temperature-measuring system of distributed fibers - Google Patents
A kind of temperature-measuring system of distributed fibers Download PDFInfo
- Publication number
- CN203929275U CN203929275U CN201420345216.7U CN201420345216U CN203929275U CN 203929275 U CN203929275 U CN 203929275U CN 201420345216 U CN201420345216 U CN 201420345216U CN 203929275 U CN203929275 U CN 203929275U
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- laser instrument
- temperature
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- measuring system
- photodetector
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Abstract
The utility model provides a kind of temperature-measuring system of distributed fibers, it comprises measures main frame, sensing optic cable and multiple data display equipment, described sensing optic cable is connected with measurement main frame respectively with data display equipment, in described measurement main frame, be provided with singlechip control panel, laser instrument, optical cable wave division multiplex coupler, photodetector and data collecting card, described singlechip control panel is connected with laser instrument and data collecting card by wire, and optical cable wave division multiplex coupler is connected with laser instrument, photodetector by optical fiber.The utility model adopts optical fiber as temperature-sensitive and sensing media, can realize linear thermometric location real-time, has program control alarm switch amount output.Also there is very strong stability and reliability, in the time of long-term work, there is best security simultaneously, and can also be anti-flaming, explosion-proof, anticorrosive, anti-electromagnetic interference (EMI) is used safety in hostile environment.
Description
Technical field
The utility model relates to a kind of temp measuring system, especially relates to a kind of temperature-measuring system of distributed fibers.
Background technology
In transformer station, be laid with a large amount of power cables and control cables, and connect high-tension switch cabinet.These cable distribution, in cable tunnel, cable testing bridge, cable interlayer, are connecting respectively each electrical equipment, and are connected to pulpit, very harmful after generation Cable Firing Accident.Because cable is often concentrated and laid, once coverage on fire is wide, repair time is long, and the loss causing is large.Fire failure major part is because excess Temperature causes, therefore, before fire occurs in time, the temperature variation of monitor cable, switch cubicle send early warning, make user have the sufficient time to take appropriate measures, this is to being avoided accident occur or cause that fire is particularly important.
Traditional temperature measuring equipment has that band electro-detection, temperature accuracy are low, location ambiguity, thermometric reflection speed are low, the weakness such as thermometric coverage is short, constructional difficulties.According to each large-engineering actual temperature monitor signal situation in conjunction with optical technology and the electronic circuit technology development distributed linear optical fiber temp measuring system that meets the demands.The data that in an effective region, the instrument of monitor temperature gathers are more continuous, and the actual signal collecting is truer, and accuracy is higher, so just need the device of a kind of superpower arithmetic capability, high speed acquisition processing.By the long term monitoring to temperature and analysis, can draw many information of temperature, so can carry out for a long time temperature, continuously, precisely monitoring determines accuracy and the promptness of temperature pre-warning and warning to a great extent.
Utility model content
The utility model object is for the existing above-mentioned technical matters of prior art, and a kind of temperature-measuring system of distributed fibers is provided.
For achieving the above object, the utility model proposes a kind of temperature-measuring system of distributed fibers, it comprises measures main frame, sensing optic cable and multiple data display equipment, described sensing optic cable is connected with measurement main frame respectively with data display equipment, in described measurement main frame, be provided with singlechip control panel, laser instrument, optical cable wave division multiplex coupler, photodetector and data collecting card, described singlechip control panel is connected with laser instrument and data collecting card by wire, and optical cable wave division multiplex coupler is connected with laser instrument, photodetector by optical fiber.
As preferably, described laser instrument adopts many narrow pulse lasers.
As preferably, the fibre core of described sensing optic cable adopts multimode optical fiber, and fiber optic protection layer adopts spiral pipe armouring sheath.
The utility model adopts optical fiber as temperature-sensitive and sensing media, can realize linear thermometric location real-time, has program control alarm switch amount output.Also there is very strong stability and reliability, in the time of long-term work, there is best security simultaneously, and can also be anti-flaming, explosion-proof, anticorrosive, anti-electromagnetic interference (EMI) is used safety in hostile environment.
Brief description of the drawings
Fig. 1 is the structured flowchart of a kind of temperature-measuring system of distributed fibers described in the utility model.
Embodiment
Feature of the present utility model and advantage will be elaborated by reference to the accompanying drawings by embodiment.
As shown in Figure 1, a kind of temperature-measuring system of distributed fibers, it comprises measures main frame 1, sensing optic cable 2 and multiple data display equipment 3, described sensing optic cable 2 is connected with measurement main frame 1 respectively with data display equipment 3, in described measurement main frame 1, be provided with singlechip control panel 11, laser instrument 12, optical cable wave division multiplex coupler 13, photodetector 14 and data collecting card 15, described singlechip control panel 11 is connected with laser instrument 12 and data collecting card 15 by wire, optical cable wave division multiplex coupler 13 is by optical fiber and laser instrument 12, photodetector 14 connects, described laser instrument adopts many narrow pulse lasers, the fibre core of described sensing optic cable adopts multimode optical fiber, fiber optic protection layer adopts spiral pipe armouring sheath.
Principle of work of the present utility model: laser instrument 12 sends pulse laser, by entering into sensing optic cable 2 to be measured after optical cable wave division multiplex coupler 13, pulse laser constantly produces backscattering in the interior communication process of sensing optic cable 2, back-scattering light turns back to optical cable wave division multiplex coupler 13, after glistening light of waves cable wave division multiplex coupler 13, from back-scattering light, extract anti-Stokes and Stokes two is restrainted scattered light, this two-beam becomes light signal through photodetector 14 electric signal of amplification; Then data collecting card 15 be transferred on data display equipment 3 by electrical signal collection and by singlechip control panel 11 show, analyzing and processing.
Specific embodiment described herein is only to the explanation for example of the utility model structure.The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (3)
1. a temperature-measuring system of distributed fibers, it is characterized in that: it comprises measures main frame, sensing optic cable and multiple data display equipment, described sensing optic cable is connected with measurement main frame respectively with data display equipment, in described measurement main frame, be provided with singlechip control panel, laser instrument, optical cable wave division multiplex coupler, photodetector and data collecting card, described singlechip control panel is connected with laser instrument and data collecting card by wire, and optical cable wave division multiplex coupler is connected with laser instrument, photodetector by optical fiber.
2. a kind of temperature-measuring system of distributed fibers as claimed in claim 1, is characterized in that: described laser instrument adopts many narrow pulse lasers.
3. a kind of temperature-measuring system of distributed fibers as claimed in claim 1, is characterized in that: the fibre core of described sensing optic cable adopts multimode optical fiber, and fiber optic protection layer adopts spiral pipe armouring sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345216.7U CN203929275U (en) | 2014-06-26 | 2014-06-26 | A kind of temperature-measuring system of distributed fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345216.7U CN203929275U (en) | 2014-06-26 | 2014-06-26 | A kind of temperature-measuring system of distributed fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203929275U true CN203929275U (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420345216.7U Expired - Fee Related CN203929275U (en) | 2014-06-26 | 2014-06-26 | A kind of temperature-measuring system of distributed fibers |
Country Status (1)
| Country | Link |
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| CN (1) | CN203929275U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607219A (en) * | 2017-09-18 | 2018-01-19 | 北京航空航天大学 | A kind of distributed temperature measuring system based on optical fiber radiation induced attenuation temperature sensitivity |
| CN110332595A (en) * | 2019-06-05 | 2019-10-15 | 北京航天控制仪器研究所 | A kind of automatic control hold over system of combination distributed optical fiber temperature measurement host |
-
2014
- 2014-06-26 CN CN201420345216.7U patent/CN203929275U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607219A (en) * | 2017-09-18 | 2018-01-19 | 北京航空航天大学 | A kind of distributed temperature measuring system based on optical fiber radiation induced attenuation temperature sensitivity |
| CN110332595A (en) * | 2019-06-05 | 2019-10-15 | 北京航天控制仪器研究所 | A kind of automatic control hold over system of combination distributed optical fiber temperature measurement host |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20180626 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |