CN201772949U - Distributed fiber temperature sensor system - Google Patents
Distributed fiber temperature sensor system Download PDFInfo
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- CN201772949U CN201772949U CN2010201369059U CN201020136905U CN201772949U CN 201772949 U CN201772949 U CN 201772949U CN 2010201369059 U CN2010201369059 U CN 2010201369059U CN 201020136905 U CN201020136905 U CN 201020136905U CN 201772949 U CN201772949 U CN 201772949U
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- master controller
- analog switch
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Abstract
The utility model relates to a distributed fiber temperature sensor system, which comprises a detected sensing optical cable, a wavelength division multiplexer arranged on the detected sensing optical cable, a photoelectric detector connected with the wavelength division multiplexer, a signal processor connected with the output end of the photoelectric detector, a main controller connected with the signal processor, and external equipment connected with the main controller. The distributed fiber temperature sensor system is characterized by also comprising a standby controller with the same configuration as the main controller and an analog switch, wherein the standby controller is also connected with the signal processor and the external equipment; and both the main controller and the standby controller are connected with the analog switch and then connected with the external equipment. Compared with the prior art, because of the standby controller with the same configuration as the main controller and the analog switch, the standby controller is immediately started to work when the signal processor detects the abnormality of the main controller, so the normal operation of the whole system is ensured, and the safety of the whole system is improved.
Description
Technical field
The utility model relates to a kind of distributed optical fiber temperature transducer system.
Background technology
Distributed optical fiber temperature transducer system is a kind of technology that is used for monitoring in real time the space temperature field distribution that grew up in recent years, mainly according to the optical time domain reflection (OTDR) of optical fiber and the optical fiber temperature effect of Raman scattering dorsad, it can the tested optical cable of continuous coverage place along the line temperature, measuring distance is several kilometers scope, spatial positioning accuracy reaches the order of magnitude of rice, can carry out uninterrupted automatic measurement, be specially adapted to the application scenario of multipoint temperature monitoring on a large scale.In electric system, this optical fiber sensing technology easily produces facilities such as the position, cable interlayer, cable passage, high-rating generator stator, high-power transformer, boiler of heating because of the loose contact reason at high voltage power cable, electrical equipment fixed point of temperature sensing occasion is with a wide range of applications.
General distributed optical fiber temperature transducer system includes tested sensing optic cable, be arranged on the wavelength division multiplexer on the tested sensing optic cable, the photoelectric detector that links to each other with wavelength division multiplexer, the signal processor that links to each other with the photoelectric detector output terminal, master controller that links to each other with signal processor and the external unit that links to each other with master controller are shown in accompanying drawing 2; Optical fiber in distributed optical fiber temperature transducer system in the optical cable be transmission medium be again the sensing medium, the scattered intensity of Raman dorsad in the optical fiber has been modulated in the temperature field of optical fiber space of living in each point, light has been gathered space temperature information through wavelength division multiplexer and photoelectric detector, after the signal processor demodulation, temperature information is extracted from noise in real time again, after the temperature information of master controller after with the signal processor demodulation gathered, the external unit that sends to the backstage was used.
Therefore wherein, generally adopt PC104 as master controller, PC104 compares common computer motherboard, and his volume is less, power consumption is lower, be more suitable in commercial Application.But in actual use, PC104 is owing to relate to a large amount of software and hardware technologies, miscellaneous part relatively, and easier appearance is unusual in the long-play process, in case and master controller occurs unusually, then the safety of whole distributed optical fiber temperature transducer system just can not get ensureing.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of at above-mentioned prior art the distributed optical fiber temperature transducer system of the normal operation of total system to occur still keeping when unusual when master controller.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this distributed optical fiber temperature transducer system, comprise tested sensing optic cable, be arranged on the wavelength division multiplexer on the tested sensing optic cable, the photoelectric detector that links to each other with wavelength division multiplexer, the signal processor that links to each other with the photoelectric detector output terminal, the master controller that links to each other with signal processor, the external unit that links to each other with master controller, it is characterized in that: also comprise one with the identical spare controller of described master controller configuration, first analog switch and second analog switch, described master controller with link to each other with described signal processor after described spare controller all is connected described first analog switch, described master controller with link to each other with described external unit after described spare controller all is connected described second analog switch.
As improvement, described signal processor includes an alarm module.
Described master controller all links to each other with described signal processor by the PC104 interface with described spare controller.
Compared with prior art, advantage of the present utility model is: by an identical spare controller and an analog switch of described master controller configuration is set, when detecting master controller, signal processor occurs under the unusual situation, start spare controller work at once, guaranteed the normal operation of whole distributed optical fiber temperature transducer system, the security that has improved whole distributed optical fiber temperature transducer system.
Description of drawings
Fig. 1 is the structured flowchart of distributed optical fiber temperature transducer system among the utility model embodiment.
Fig. 2 is the structured flowchart of distributed optical fiber temperature transducer system in the prior art.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Distributed optical fiber temperature transducer system as shown in Figure 1, comprise tested sensing optic cable 1, be arranged on the wavelength division multiplexer 2 on the tested sensing optic cable, the photoelectric detector 3 that links to each other with wavelength division multiplexer 2, the signal processor 4 that links to each other with photoelectric detector 3 output terminals, master controller 5 all links to each other with first analog switch 9 by the PC104 interface with spare controller 6 and then links to each other with signal processor 4, master controller 5 has identical configuration with spare controller 6, and master controller 5 all is connected second analog switch 7 and links to each other with external unit 8 with spare controller 6.
In addition, described signal processor 4 includes an alarm module.During system start-up, signal processor 4 is realized communicating by letter with spare controller 6 with master controller 5 respectively, and master controller 5 and spare controller 6 all work in normal condition, otherwise the alarm module of signal processor 4 is just reported to the police.Second analog switch 7 places the state of master controller 5 and external unit direct communication during system start-up; And whether signal processor 4 monitoring master controller 5 in real time is operated in normal condition, if working properly, then continues to keep present situation; If signal processor 4 monitors master controller 5 (do not respond for a long time, communication data packet is continuously wrong etc.) arranged unusually, just notify first analog switch to make the master controller of spare controller 6 by the PC104 interface immediately as operation; And, second analog switch is switched to the state of spare controller 6 and external unit 8 direct communications.Simultaneously, signal processor 4 notice master controllers 5 carry out self-regeneration, if realized self-regeneration, then master controller as standby controller.If master controller can not be realized self-regeneration, just by spare controller relevant failure message is sent to external unit 8 immediately.
This programme has been realized the redundancy backup of master controller in the distributed optical fiber temperature transducer system, need not outage, and is non-maintaining, effectively increased the reliability of system, reduced because the risk that the hardware and software failure of master controller brings to system.
Claims (3)
1. distributed optical fiber temperature transducer system, comprise tested sensing optic cable, be arranged on the wavelength division multiplexer on the tested sensing optic cable, the photoelectric detector that links to each other with wavelength division multiplexer, the signal processor that links to each other with the photoelectric detector output terminal, the master controller that links to each other with signal processor, the external unit that links to each other with master controller, it is characterized in that: also comprise one with the identical spare controller of described master controller configuration, first analog switch and second analog switch, described master controller with link to each other with described signal processor after described spare controller all is connected described first analog switch, described master controller with link to each other with described external unit after described spare controller all is connected described second analog switch.
2. distributed optical fiber temperature transducer system according to claim 1 is characterized in that: described signal processor includes an alarm module.
3. distributed optical fiber temperature transducer system according to claim 1 and 2 is characterized in that: described master controller all links to each other with described signal processor by the PC104 interface with described spare controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201369059U CN201772949U (en) | 2010-03-16 | 2010-03-16 | Distributed fiber temperature sensor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201369059U CN201772949U (en) | 2010-03-16 | 2010-03-16 | Distributed fiber temperature sensor system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201772949U true CN201772949U (en) | 2011-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201369059U Expired - Fee Related CN201772949U (en) | 2010-03-16 | 2010-03-16 | Distributed fiber temperature sensor system |
Country Status (1)
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| CN (1) | CN201772949U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418557A (en) * | 2011-12-26 | 2012-04-18 | 江苏法尔胜泓昇集团有限公司 | All-optical-fiber temperature monitoring system for gob under coal mine |
-
2010
- 2010-03-16 CN CN2010201369059U patent/CN201772949U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418557A (en) * | 2011-12-26 | 2012-04-18 | 江苏法尔胜泓昇集团有限公司 | All-optical-fiber temperature monitoring system for gob under coal mine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: South Road 315800 Zhejiang bonded Caoejiang Ningbo City, No. 22 Patentee after: Ningbo Handy Sensor Technology Co., Ltd. Address before: 315800 2, building 4, building 2, Pioneer Park, Ningbo Free Trade Zone, Zhejiang Patentee before: Ningbo Handy Sensor Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20180316 |
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| CF01 | Termination of patent right due to non-payment of annual fee |