CN203551143U - Distributed temperature monitoring system based on fiber - Google Patents
Distributed temperature monitoring system based on fiber Download PDFInfo
- Publication number
- CN203551143U CN203551143U CN201320617147.6U CN201320617147U CN203551143U CN 203551143 U CN203551143 U CN 203551143U CN 201320617147 U CN201320617147 U CN 201320617147U CN 203551143 U CN203551143 U CN 203551143U
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- Prior art keywords
- monitoring system
- optical fiber
- temperature monitoring
- system based
- distributed temperature
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 42
- 239000000835 fiber Substances 0.000 title claims abstract description 11
- 239000013307 optical fiber Substances 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 230000005693 optoelectronics Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 4
- 238000013021 overheating Methods 0.000 abstract 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model provides a distributed temperature monitoring system based on fibers; the distributed temperature monitoring system comprises a fiber grating temperature sensor, a demultiplexer, a power supply, a broadband light source, a circulator, a demodulation module, an optical switch, an embedded module and a monitoring terminal; the fiber grating temperature sensor is connected with the demultiplexer connected with the optical switch; the optical switch is connected with the circulator connected with the demodulation module; the demodulation module is connected with the embedded module connected with the monitoring terminal; the power supply provides power for hardware facilities in the temperature monitoring system, and the broadband light source provides light source for the whole system; the novel temperature monitoring system can realize early prediction of cable joint faults generated by overheating, so an overheating position is determined, and the system has practical values.
Description
Technical field
The utility model relates to a kind of monitoring system, more particularly relates to a kind of Distributed Temperature Monitoring System based on optical fiber.
Background technology
At present, for the monitoring of power system device, by original fault detect, to status monitoring, changed, make every effort to before fault occurs, to the running state real-time monitoring of power system device, quick, accurate failure judgement origination point, failure cause.Temperature, is one of important step of status monitoring, and for power cable contact, when running overload, power cable insulation aging speed is very fast, and conductor temperature also can sharply rise, and thermal breakdown even occurs.Therefore, design a kind of system of temperature that can Real-Time Monitoring power system device, there is important theoretical and practical significance.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of Distributed Temperature Monitoring System based on optical fiber, this temperature monitoring system can be realized the early prediction due to overheated generation fault to cable splice, and occurring, after hot stall, provides and report to the police and determined thermal site.
The utility model is achieved through the following technical solutions: a kind of Distributed Temperature Monitoring System based on optical fiber, comprises multiple fiber-optical grating temperature sensors, multiple shunt, power supply, wideband light source, circulator, demodulation module, photoswitch, flush bonding module, monitoring terminal; Described multiple fiber-optical grating temperature sensor is connected on a described shunt, multiple shunts are connected on photoswitch, and photoswitch is connected with circulator, and circulator is connected with demodulation module, demodulation module is connected on flush bonding module, and flush bonding module connects monitoring terminal; Power supply is the power supply of hardware facility in this temperature monitoring system, and wideband light source provides light source for whole system.
In such scheme, described fiber-optical grating temperature sensor comprises optical fiber, multiple fiber gratings of connecting on described optical fiber, and the coated outside of optical fiber covering, and the coated outside of covering has coat.
In such scheme, described circulator is selected 1310/1550 of four ports, for light path, turns round.
In such scheme, described demodulation module adopts OLM-G11, for opto-electronic conversion.
In such scheme, described flush bonding module is selected the LPC2114 microcontroller of ARM7TDMI-S, with 128/256KB tell Flash storer, in sheet, crystal oscillator frequency scope is 1-30MHz.
In such scheme, the data display unit of described flush bonding module is the display mode that ZLG7289B chip directly drives 8 LED charactrons.
In such scheme, described flush bonding module is provided with sound and light alarm peripheral circuit.
The beneficial effect of a kind of Distributed Temperature Monitoring System based on optical fiber of the utility model is:
1, realize cable splice due to the overheated early prediction breaking down;
2, intuitively show the particular location of cable splice, power equipment, the monitor temperature of real-time continuous;
3, there is lan interfaces, can be connected with the supervising the network of electricity substation, realize information sharing, there is temperature and show and warning function;
4, user, according to the heterogeneity of each equipment in system, sets different alarm temperature, when temperature exceedes threshold value, and system sound and light alarm.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Distributed Temperature Monitoring System of the utility model based on optical fiber;
Fig. 2 is the structural representation of part 1 in Fig. 1.
In figure: 1. fiber-optical grating temperature sensor, 2. shunt, 3. photoswitch, 4. circulator, 5. demodulation module, 6. flush bonding module, 7. monitoring terminal, 8. power supply, 9. wideband light source, 10. coat, 11. coverings, 12. optical fiber, 13. fiber gratings.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, a kind of Distributed Temperature Monitoring System based on optical fiber of the utility model is further described:
Fig. 1 is the structural representation of the Distributed Temperature Monitoring System of the utility model based on optical fiber, in figure, this temperature monitoring system comprises multiple fiber-optical grating temperature sensors 1, multiple shunt 2, photoswitch 3, circulator 4, demodulation module 5, flush bonding module 6, monitoring terminal 7, power supply 8 and wideband light source 9.Multiple fiber-optical grating temperature sensors 1 are connected on a shunt 2, multiple shunts 2 are connected on photoswitch 3, and photoswitch 3 is connected with circulator 4, and circulator 4 is connected with demodulation module 5, demodulation module 5 is connected on flush bonding module 6, and flush bonding module 6 connects monitoring terminal 7.Fiber-optical grating temperature sensor 1 monitors the temperature information of power equipment, convert it into as optical signal transmission is to shunt 2, shunt 2 sends signal to photoswitch 3, photoswitch 3 carries out light path revolution by signal by circulator 4, whole signals are transferred to demodulation module 5, and demodulation module 5 is transferred to flush bonding module 6 after converting light signal to electric signal, after flush bonding module 6 is processed, stored signal data, by the LAN interface of self, pass to monitoring terminal 7.Power supply 8 is the power supply of hardware facility in this temperature monitoring system, and wideband light source 9 provides light source for whole system.
Circulator 4 is selected 1310/1550 of four ports, for light path, turns round.Demodulation module 5 adopts OLM-G11, for opto-electronic conversion.Flush bonding module 6 is selected the LPC2114 microcontroller of ARM7TDMI-S, with 128/256KB tell Flash storer, in sheet, crystal oscillator frequency scope is 1-30MHz.The data display unit of flush bonding module 6 is the display mode that ZLG7289B chip directly drives 8 LED charactrons.Flush bonding module 6 is provided with sound and light alarm peripheral circuit.
Fig. 2 is the structural representation of part 1 in Fig. 1, in figure, and multiple fiber gratings 13 of connecting on optical fiber 12, the coated outside of optical fiber 12 covering 11, and coat 10 wraps up covering 11.Centre wavelength and the temperature of fiber grating 13 have relation, and the wavelength value being reflected back by monitoring fiber grating 13 changes, and can obtain the temperature value of fiber grating 13 present positions, thereby reach the object of temperature detection.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, but not in order to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when can utilizing the method for above-mentioned announcement and technology contents to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, still belong in the scope of technical solutions of the utility model.
Claims (7)
1. the Distributed Temperature Monitoring System based on optical fiber, is characterized in that: comprise multiple fiber-optical grating temperature sensors, multiple shunt, power supply, wideband light source, circulator, demodulation module, photoswitch, flush bonding module, monitoring terminal; Described multiple fiber-optical grating temperature sensor is connected on a described shunt, multiple shunts are connected on photoswitch, and photoswitch is connected with circulator, and circulator is connected with demodulation module, demodulation module is connected on flush bonding module, and flush bonding module connects monitoring terminal; Power supply is the power supply of hardware facility in this temperature monitoring system, and wideband light source provides light source for whole system.
2. a kind of Distributed Temperature Monitoring System based on optical fiber according to claim 1, it is characterized in that: described fiber-optical grating temperature sensor comprises optical fiber, multiple fiber gratings of connecting on described optical fiber, the coated outside of optical fiber covering, and the coated outside of covering has coat.
3. a kind of Distributed Temperature Monitoring System based on optical fiber according to claim 1, is characterized in that: described circulator is selected 1310/1550 of four ports, for light path, turns round.
4. a kind of Distributed Temperature Monitoring System based on optical fiber according to claim 1, is characterized in that: described demodulation module adopts OLM-G11, for opto-electronic conversion.
5. a kind of Distributed Temperature Monitoring System based on optical fiber according to claim 1, it is characterized in that: described flush bonding module is selected the LPC2114 microcontroller of ARM7TDMI-S, with 128/256KB tell Flash storer, in sheet, crystal oscillator frequency scope is 1-30MHz.
6. a kind of Distributed Temperature Monitoring System based on optical fiber according to claim 1, is characterized in that: the data display unit of described flush bonding module is the display mode that ZLG7289B chip directly drives 8 LED charactrons.
7. a kind of Distributed Temperature Monitoring System based on optical fiber according to claim 1, is characterized in that: described flush bonding module is provided with sound and light alarm peripheral circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320617147.6U CN203551143U (en) | 2013-10-08 | 2013-10-08 | Distributed temperature monitoring system based on fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320617147.6U CN203551143U (en) | 2013-10-08 | 2013-10-08 | Distributed temperature monitoring system based on fiber |
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| Publication Number | Publication Date |
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| CN203551143U true CN203551143U (en) | 2014-04-16 |
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| CN201320617147.6U Expired - Lifetime CN203551143U (en) | 2013-10-08 | 2013-10-08 | Distributed temperature monitoring system based on fiber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614641A (en) * | 2015-01-09 | 2015-05-13 | 山东航天电子技术研究所 | Quasi-distributed FBG conductor fault positioning system and method |
-
2013
- 2013-10-08 CN CN201320617147.6U patent/CN203551143U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614641A (en) * | 2015-01-09 | 2015-05-13 | 山东航天电子技术研究所 | Quasi-distributed FBG conductor fault positioning system and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |
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| CX01 | Expiry of patent term |