CN103630266A - Optical fiber temperature measurement host, optical fiber temperature measurement system and optical fiber temperature measurement method - Google Patents
Optical fiber temperature measurement host, optical fiber temperature measurement system and optical fiber temperature measurement method Download PDFInfo
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- CN103630266A CN103630266A CN201310694555.6A CN201310694555A CN103630266A CN 103630266 A CN103630266 A CN 103630266A CN 201310694555 A CN201310694555 A CN 201310694555A CN 103630266 A CN103630266 A CN 103630266A
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Abstract
The invention provides an optical fiber temperature measurement host for a high-voltage switch cabinet, an optical fiber temperature measurement system comprising the host and an optical fiber temperature measurement method for measuring temperature by using the host. The host adopts an optical fiber temperature measurement probe in combination with an optical signal sampling processor. The host can realize temperature measurement of a specific contact head and short-distance optical fiber temperature measurement, and can be well applied to instruments including the high-voltage switch cabinet and the like. Moreover, the invention provides an optical fiber temperature measurement system additionally comprising a display module which is used for displaying according to measurement requirements. Besides, the invention provides the method for measuring temperature by using the optical fiber temperature measurement host to realize temperature measurement of multiple target instruments.
Description
Technical field
The present invention relates to technical field of optical fiber sensing, a kind of method that relates in particular to optical fiber temperature-measurement main frame for high-tension switch cabinet, the system that comprises this optical fiber temperature-measurement main frame and use this optical fiber temperature-measurement main frame thermometric.
Background technology
The situations such as the connector of various contacts, bus bar, cable splice and the electrical equipment of high-tension switch cabinet inside is easy to occur loose contact, the bias of pegging graft is undesired.This will cause contact resistance excessive, under large electric current, this place's heating is serious, consequently connector temperature is abnormal, the oxidation of aggravation surface of contact, further increases contact resistance, forms vicious cycle, develop into after certain phase, can cause catastrophic failure, destroy the safe and reliable of power supply, this is the major failure form of high-tension switch cabinet.Therefore butt contact carries out real time temperature monitoring, finds in time the heat generating spot in switch cubicle, and the early prediction of realizing fault is very important for the guarantee security of the lives and property with warning.
More traditional thermometry comprises wireless temperature measurement technology, infrared temperature-test technology etc. at present.Because wireless temperature measurement and infrared temperature-test technology all adopt electronic sensor as on-the-spot sensing unit, spot sensor is charged, is easily subject to the impact of high-intensity magnetic field and high pressure, and long-term work is easily aging, to equipment, brings potential safety hazard.Fiber Optic Pyrometer can be avoided the problems referred to above, but current optical fiber temperature-measurement mainly adopts optical cable, cannot realize the thermometric to special touch contact, and can only be for remote thermometric.Therefore cannot be applicable to as the short distance of high-tension switch cabinet and so on and the temperature survey to special touch.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method with optical fiber temperature-measurement, can be applied in the mini-system such as high-tension switch cabinet, and can realize the temperature survey to specific connector.
For solving the problems of the technologies described above, the invention provides a kind of optical fiber temperature-measurement main frame that is applicable to a high-tension switch cabinet, this optical fiber temperature-measurement main frame comprises: at least one fibre-optical probe, for one of connecting in this high-tension switch cabinet connector to capture its temperature information and this temperature information is stored in to a light signal; Light signal sampling processor, this temperature information that couples this at least one fibre-optical probe and captured to obtain it for this light signal of sampling.
Further, described fibre-optical probe be by coating technique by semiconductor material be evenly plated in fiber axis to xsect on, then form by ceramic pipe and aviation rubber seal dress.
Further, described light signal sampling processor comprises: photoelectric commutator, for sampling described light signal convert thereof into electric signal; Operational amplifier, for amplifying processing by described electric signal; AD converter, for carrying out sampling processing to the electric signal amplifying; The first controller, for receiving described sampled signal and therefrom obtaining temperature data.
Further, the electric signal that described photoelectric commutator is more changed it carries out filtering noise processing.
Further, described the first controller is ARM controller STM32.
The invention provides a kind of optical fiber temperature measurement system that is applicable to a high-tension switch cabinet, this optical fiber temperature measurement system comprises above-mentioned optical fiber temperature-measurement main frame and display module, and this display module couples this light signal sampling processor, for showing this temperature information.
Further, described display module is a display panel, comprises second controller, for receiving and process described temperature data; Storer, for storing the information that this temperature data is relevant; Display, for the information that shows that this temperature data is relevant.
Further, described display panel is connected with described light signal sampling processor by RS485 bus, and the application layer protocol of this RS485 bus is Modbus.
Further, described display panel more comprises an alarm module, and when this temperature data detecting surpasses a setting threshold, this alarm module is reported to the police.This setting threshold is stored in described storer.
The present invention also provides a kind of optical fiber temperature-measurement method, the light signal sampling processor of a plurality of optical fiber temperature-measurement main frames is connected to each other, and couples described any light signal sampling processor with a PC, to realize to a plurality of high-tension switch cabinet time monitoring.
Than prior art, the present invention adopts fibre-optical probe to couple connector in high-tension switch cabinet to obtain corresponding temperature information and to be stored in light signal, and adopt light signal sampling processor to carry out opto-electronic conversion and the described temperature information of therefrom sampling out to described light signal, more provide a kind of display panel to show that in detail the various temperature informations that obtain are to monitor those temperature.First, user can choice for use described in display panel monitor, also can connect PC and monitor in this light signal sampling processing module, can realize quickly and easily the temperature monitoring in high-tension switch cabinet.Secondly, optical fiber measurement is applied to measurement high-tension switch cabinet, the anti-electromagnetic interference (EMI) of energy, burn into thunderbolt, and can under rugged surroundings, work.
Accompanying drawing explanation
Fig. 1 is structural representation and the relevant work schematic diagram of thermometric main frame described in one embodiment of the invention;
Fig. 2 is the structural representation of temp measuring system described in one embodiment of the invention;
Fig. 3 is the connection layout of temp measuring method described in one embodiment of the invention.
Embodiment
Optical fiber temperature-measurement main frame the present invention being proposed below in conjunction with the drawings and specific embodiments, system and method is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the object of the aid illustration embodiment of the present invention lucidly.
Please refer to Fig. 1, the present embodiment provides a kind of optical fiber temperature-measurement main frame, comprises fibre-optical probe 100, light signal sampling processor 200, wherein light signal sampling processor 200 comprises again photoelectric commutator 210, operational amplifier 220, AD converter 230 and the first controller 240.
Wherein, this fibre-optical probe 100 can arrange according to concrete thermometric demand a plurality of, is in the present embodiment 6.The present embodiment, for measuring the temperature of the dynamic and static contact of vacuum circuit breaker in high-tension switch cabinet, now arranges 6 fibre-optical probes, is connected on respectively on the dynamic and static contact of vacuum circuit breaker.Three-phase electricity is denoted as A phase, B phase, C phase.Wherein moving contact is designated as that A goes up mutually, B goes up mutually, C goes up mutually, static contact be designated as A mutually under, B mutually under, C mutually under.More than, for measuring the situation of the temperature of the dynamic and static contact of vacuum circuit breaker in high-tension switch cabinet, the fibre-optical probe quantity of described thermometric main frame and thermometric object all can change according to real needs, not as limit.
In the present embodiment, fibre-optical probe 100 is connected to light signal sampling processor 200 by the SC interface of its tail optical fiber.
In the present embodiment, described fibre-optical probe 100 is for thermometric, be by coating technique by semiconductor material be evenly plated in fiber axis to xsect on, then form by ceramic pipe and aviation rubber seal dress.
Described light signal sampling processor 200 comprises photoelectric commutator 210, operational amplifier 220, AD converter 230, the first controllers 240.First, photoelectric commutator 210 converts the light signal receiving to electric signal, by one of its inside low-pass filter filtering noise, then delivers to and in operational amplifier 220, carries out signal amplification.After amplifying signal reaches the voltage range that AD converter 230 can change, AD converter 230 starts sampling, the data that collect is passed to the first controller 240, the first controllers 240 and by certain algorithm, obtain temperature data.
Further, the temperature data that fibre-optical probe 100 collects is passed to light signal collection processor 200 with the form of light, and light letter Acquisition Processor 200 alternately receives the temperature data that a plurality of fibre-optical probes 100 transmit.First by PIN receiving tube, the light signal receiving is converted into electric signal, electric signal very faint (μ V rank) also carries a lot of high frequency noises, these signals that mixing noise are passed to operational amplifier 220 by above-mentioned low-pass filter filter away high frequency noise later, described operational amplifier can be three-stage operational amplifier, and it carries out three grades of amplifications to above-mentioned signal.Wherein the first order is emitter following, plays the effect of impedance matching; N1 is amplified doubly according to the size of signal in the second level, and the third level is amplified N2 doubly, altogether amplifies N=N1*N2 doubly.Amplifying signal reaches and starts AD converter 230 after the optimum sampling voltage of AD sampling and carry out AD sampling, and then the data that six probes of AD converter 230 alternating sampling transmit are given the first controller 240 and extracted temperature data.
Wherein, shown in the first controller 240 can be arm processor, concrete, can be STM32.
Fig. 2 is the structural representation of optical fiber temperature measurement system of the present invention, is specially being combined with of the thermometric main frame of the present invention display module open with the present invention.
Please refer to Fig. 2, on the basis of the main frame of optical fiber temperature-measurement shown in Fig. 1, display module 300 connects described light signal sampling processor 200, jointly forms optical fiber temperature measurement system.Display module 300 can connect light signal sampling processor 200 by RS485 interface.In the present embodiment, light signal sampling processor 200 more comprises first interface circuit 10, display module 300 more comprises the second interface circuit 20, and first interface circuit 10 and the second interface circuit 20 are RS485 interface circuit, the two is connected display module 300 by RS interface bus with light signal sampling processor 200, the application layer protocol of this RS485 bus adopts Modbus.
In the present embodiment, described display module 300 is a display panel, and it comprises second controller 310, storer 320, display 330.Wherein second controller 310 is for the temperature data that receives signal sampling processor 200 and transmit and carry out respective handling; Storer 320 and display 330 are respectively used to storage and show this temperature data and relevant information.
Further, second controller 310 is ARM controller, has adopted real time operating system Rt-Thread, and described interface display adopts ucgui to write; Storer 320 is ferroelectric memory; Display 330 is 320*240TFT LCDs.Described LCDs can arrange six menu functions as required, is respectively: temperature detection, data query, warning inquiry, history curve, set of time, system help, by button, carry out menu setecting operation.Temperature detection is exactly A, the B of main interface display, the upper and lower contact temperature data of C three-phase; Data query is exactly the in the past temperature of 1 year contact of inquiry, surpasses the data of year deletion of rolling.The data in past 1 year are to get with the following methods: the temperature data of every day is compared, take out maximal value, then deposit maximal value in ferroelectric memory.The temperature of reporting to the police while inquiring about exactly by trigger alarm is stored.Have alert data, immediately storage, until ferroelectric memory is full at every turn.History curve is exactly that the data of a year of will store in data query menu show, depicts curve, shows intuitively the variation of this year contact temperature.Set of time arranges system time exactly.System setting is exactly that alarm threshold value is set, and surpasses threshold value and reports to the police.Wherein temporal information and threshold information are all stored in ferroelectric memory, can power down preserve.Be more than a kind of working method of the display module of the present invention's optical fiber temperature measurement system, but specifically arrange not as limit.
Fig. 3 is the connection layout of temp measuring method of the present invention.Be specially thermometric main frame of the present invention temp measuring method when many high-tension switch cabinets are measured.
Please refer to Fig. 3, many as shown in Figure 1 optical fiber temperature-measurement main frame connect respectively many high-tension switch cabinets, shown in figure, be the thermometric to two switch cubicles, but quantity is not as limit.Wherein two optical fiber temperature-measurement main frames comprise respectively light signal sampling processor 200 and 200 " and lay respectively at first interface circuit 10 and 10 wherein ", PC 400 comprises one the 3rd interface circuit 30, this PC 400 is connected respectively to first interface circuit 10 and 10 by the 3rd interface circuit by RS485 bus ", and two signal sampling processors 200 and 200 " between also by first interface circuit 10 and 10 " by the networking of RS485 bus.In this embodiment, PC 400 can carry out on-line temperature monitoring to many high-tension switch cabinets.
To sum up, the invention provides a kind of optical fiber temperature-measurement main frame, this main frame can be connected with the display module 300 the invention provides and carries out thermometric and show; When needs carry out thermometric to many target instruments, also each optical fiber temperature-measurement main frame can be connected respectively to after many target instruments by 200 networkings of light signal sampling processor, and with PC 400, be connected to any light signal sampling processor and carry out on-line temperature monitoring.
In addition, fibre-optical probe high insulating property of the present invention, anti-electromagnetic interference (EMI), anticorrosive, explosion-proof, anti-lightning strike can be worked and its simple in structure, compact size, easy for installation under severe bad border, are suitable for various occasions; Described probe is without externally fed, without battery, and one-step installation, non-maintaining throughout one's life.Its two, split type design proposal facilitates networking, realizes multiple spot, FR temperature data and detects.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these change and modification.
Claims (10)
1. an optical fiber temperature-measurement main frame, is applicable to a high-tension switch cabinet, and described optical fiber temperature-measurement main frame comprises:
At least one fibre-optical probe, for one of connecting in this high-tension switch cabinet connector to capture its temperature information and this temperature information is stored in to a light signal;
Light signal sampling processor, this temperature information that couples this at least one fibre-optical probe and captured to obtain it for this light signal of sampling.
2. thermometric main frame as claimed in claim 1, is characterized in that: described fibre-optical probe be by coating technique by semiconductor material be evenly plated in fiber axis to xsect on, then form by ceramic pipe and aviation rubber seal dress.
3. thermometric main frame as claimed in claim 1, described light signal sampling processor comprises:
Photoelectric commutator, for sampling described light signal convert thereof into electric signal;
Operational amplifier, for amplifying processing by described electric signal;
AD converter, for carrying out sampling processing to the electric signal amplifying; And
The first controller, for receiving described sampled signal to obtain temperature data.
4. the thermometric main frame of stating as claim 3, is characterized in that: the electric signal that described photoelectric commutator is more changed it carries out filtering noise processing.
5. the thermometric main frame of stating as claim 3, is characterized in that: described the first controller is ARM controller STM32.
6. an optical fiber temperature measurement system, is applicable to a high-tension switch cabinet, and this optical fiber temperature measurement system comprises:
Optical fiber temperature-measurement main frame as claimed in claim 1; And
Display module, couples this light signal sampling processor, for showing this temperature information.
7. temp measuring system as claimed in claim 6, is characterized in that: described display module is a display panel, and this display panel comprises:
Second controller, for receiving and process described temperature data;
Storer, for storing the information that this temperature data is relevant; And
Display, for the information that shows that this temperature data is relevant.
8. temp measuring system as claimed in claim 7, is characterized in that: described display panel is connected with described light signal sampling processor by RS485 bus, and the application layer protocol of this RS485 bus is Modbus.
9. temp measuring system as claimed in claim 6, is characterized in that: described display module more comprises an alarm module, and when this temperature data detecting surpasses a setting threshold, this alarm module is reported to the police.
10. an optical fiber temperature-measurement method, it is characterized in that: the light signal sampling processor of a plurality of optical fiber temperature-measurement main frames is as claimed in claim 1 connected to each other, and couple described any light signal sampling processor with a PC, to realize to a plurality of high-tension switch cabinet time monitoring.
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| CN104483039A (en) * | 2014-12-26 | 2015-04-01 | 苏州市龙源电力科技股份有限公司 | On-line optical fiber temperature monitoring system for switch cabinet |
| CN105371983A (en) * | 2015-12-15 | 2016-03-02 | 河海大学常州校区 | Optical fiber temperature measuring device for measuring contact temperature of breaker contact arm |
| CN106124086A (en) * | 2016-08-15 | 2016-11-16 | 保定合力达电缆附件有限公司 | A kind of high tension cable silastic terminal temperature measuring equipment |
| CN107300421A (en) * | 2017-05-19 | 2017-10-27 | 四川成瑞科技有限公司 | Temperature monitoring network-building method and device |
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| CN104483039A (en) * | 2014-12-26 | 2015-04-01 | 苏州市龙源电力科技股份有限公司 | On-line optical fiber temperature monitoring system for switch cabinet |
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| CN106124086A (en) * | 2016-08-15 | 2016-11-16 | 保定合力达电缆附件有限公司 | A kind of high tension cable silastic terminal temperature measuring equipment |
| CN106124086B (en) * | 2016-08-15 | 2020-03-10 | 保定合力达电缆附件有限公司 | High tension cable silicon rubber terminal temperature measuring device |
| CN107300421A (en) * | 2017-05-19 | 2017-10-27 | 四川成瑞科技有限公司 | Temperature monitoring network-building method and device |
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Application publication date: 20140312 |