CN102109392B - Embedding type fiber bragg grating temperature measuring device - Google Patents
Embedding type fiber bragg grating temperature measuring device Download PDFInfo
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- CN102109392B CN102109392B CN201010577071.XA CN201010577071A CN102109392B CN 102109392 B CN102109392 B CN 102109392B CN 201010577071 A CN201010577071 A CN 201010577071A CN 102109392 B CN102109392 B CN 102109392B
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- 238000009529 body temperature measurement Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 abstract description 8
- 230000002159 abnormal effect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000004364 calculation method Methods 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 2
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Abstract
The invention discloses an embedding type fiber bragg grating temperature measuring device, relating to the technical field of optical fiber measurement and aiming at improving the interference resistance and reliability. The embedding type fiber bragg grating temperature measuring device comprises a microprocessor and a fiber bragg grating demodulating module which are arranged in the shell; the fiber bragg grating demodulating module comprises a laser source, a light splitter, an optical-fiber tunable filter, a spectrum standard tool, a photoelectric converter and an analog-to-digital converter, wherein a light incident port of the light splitter is connected with the laser source by the optical-fiber tunable filter, one light splitting emergent port of the light splitter is connected with a light incident port of the spectrum standard tool, and the other light splitting emergent ports are respectively connected with a grating sensor and are respectively connected with all light incident ports of the photoelectric converter; and all analog signal input ports of the analog-to-digital converter are respectively connected with an electric signal output port of the spectrum standard tool and all electric signal output ports of the photoelectric converter, and a digital signal output port of the photoelectric converter is connected to a signal output port of the microprocessor. The device provided by the invention can be used on occasions with high requirement for electromagnetic compatibility.
Description
Technical field
The present invention relates to optical fiber measurement technology, particularly relate to a kind of technology of embedded optical fiber grating temperature measurement device.
Background technology
Than traditional measurement means, optical fiber measurement technology has unrivaled superiority, its sensor and transmission channel are all to take optical fiber as material, by measuring the changing features of laser, characterize the characteristic of measuring object, because the material of optical fiber is glass fibre, its pressure-resistant corrosion-resistant stability is high, and is not subject to electromagnetic interference influence, has the advantages that the life-span is long, precision is high, starting material are cheap and abundant.Optical fiber grating temperature-measuring technology is a kind of in optical fiber measurement technology, is specially adapted to the thermometric of high pressure, the high-risk occasion such as inflammable.
Existing optical fiber grating temperature-measuring device is all to adopt industrial computer to add fiber Bragg grating (FBG) demodulator to carry out thermometric, during thermometric, first by fiber Bragg grating (FBG) demodulator, measure the reflected light wavelength of specifying grating, then by serial ports or Ethernet, the reflecting light long pass of measuring is passed to industrial computer, by drawing final measurement temperature value after the further analyzing and processing of industrial computer.The defect of existing fiber grating temperature measurement device is: 1) industrial computer volume ratio is larger, in some occasion, cannot install; 2) antijamming capability is poor, is difficult at working environments such as electric system poorly, and requires high occasion to use to Electro Magnetic Compatibility; 3) reliability is poor, as the fan of industrial computer, communication port etc. very easily break down.
Summary of the invention
For the defect existing in above-mentioned prior art, technical matters to be solved by this invention is to provide that a kind of volume is little, and antijamming capability is strong, and reliability is high, can be poor at working environments such as electric system, and the embedded optical fiber grating temperature measurement device that requires high occasion to use to Electro Magnetic Compatibility.
In order to solve the problems of the technologies described above, a kind of embedded optical fiber grating temperature measurement device provided by the present invention, it is characterized in that: comprise housing, be arranged on display screen, keyboard, interface socket and a plurality of fiber optic connector on housing, be arranged on microprocessor, fiber grating demodulation module in housing;
Described interface socket is provided with serial communication web member, Ethernet web member and a plurality of alarm signal web member;
Described microprocessor is provided with keyboard interface, video interface, signal input, serial communication interface, data exchange interface and a plurality of alarm signal delivery outlet, its keyboard interface connects keyboard, its video interface connects display screen, its serial communication interface is connected to serial communication web member through a serial communication chip, its data exchange interface is connected to Ethernet web member, and its each alarm signal delivery outlet is connected respectively to each alarm signal web member through relay;
Described fiber grating demodulation module comprises lasing light emitter, optical splitter, fibre-optical tunable wave filter, spectrum etalon, photoelectric commutator, analog to digital converter;
Described fibre-optical tunable wave filter is provided with light entrance port and optical emission exit, and its light entrance port connects lasing light emitter through optical fiber;
Described spectrum etalon is provided with a light entrance port, an electric signal delivery outlet, and described photoelectric commutator is provided with a plurality of smooth entrance ports and a plurality of electric signal delivery outlet;
Described optical splitter is provided with a light entrance port and a plurality of loophole that splits, one of them splits loophole is spectrum tool interface, other splits loophole is sensor interface, its light entrance port is connected to the optical emission exit of fibre-optical tunable wave filter through optical fiber, its spectrum tool interface is connected to the light entrance port of spectrum etalon through optical fiber, its each sensor interface is received respectively each fiber optic connector through optical fiber, and each light entrance port of receiving respectively photoelectric commutator through optical fiber, each fiber optic connector respectively connects a grating sensor through optical fiber;
Described analog to digital converter is provided with a plurality of simulating signals input port, a digital signal output, its each simulating signal input port is connected respectively to the electric signal delivery outlet of spectrum etalon and each electric signal delivery outlet of photoelectric commutator, and its digital signal delivery outlet is connected to the signal input of microprocessor.
Embedded optical fiber grating temperature measurement device provided by the invention, utilize the light beam that optical splitter provides lasing light emitter to be divided into multichannel, utilize spectrum etalon to provide with reference to spectrum for surveying, utilize photoelectric commutator and analog to digital converter that light signal is converted to electrical signal transfer to microprocessor, by the wavelength of measurement light wave and with reference to the comparison computer measurement temperature between the wavelength of spectrum, each critical piece is all built in housing, can effectively shield external disturbance, and volume is small and exquisite, can be poor at working environments such as electric system, and require high occasion to use to Electro Magnetic Compatibility, reliability is also higher.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the embedded optical fiber grating temperature measurement device of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing explanation, embodiments of the invention are described in further detail, but the present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof, all should list protection scope of the present invention in.
As shown in Figure 1, a kind of embedded optical fiber grating temperature measurement device that the embodiment of the present invention provides, it is characterized in that: comprise housing (not shown), be arranged on display screen (not shown), keyboard (not shown), interface socket 2 and a plurality of fiber optic connector (not shown) on housing, be arranged on microprocessor 1, fiber grating demodulation module in housing;
Described interface socket 2 is provided with serial communication web member, Ethernet web member and three alarm signal web members, and described three alarm signal web members are respectively abnormal signal web member, the out-of-limit signal connector of one-level, the out-of-limit signal connector of secondary;
Described microprocessor 1 is provided with keyboard interface, video interface, signal input, serial communication interface, data exchange interface and three alarm signal delivery outlets, its three alarm signal delivery outlets are respectively abnormal signal delivery outlet, the out-of-limit signal output of one-level, the out-of-limit signal output of secondary, its keyboard interface connects keyboard, its video interface connects display screen, its serial communication interface is connected to serial communication web member through a serial communication chip (not shown), its data exchange interface is connected to Ethernet web member, its abnormal signal delivery outlet is connected to abnormal signal web member through relay, the out-of-limit signal output of its one-level is connected to the out-of-limit signal connector of one-level through relay, the out-of-limit signal output of its secondary is connected to the out-of-limit signal connector of secondary through relay,
Described fiber grating demodulation module comprises lasing light emitter 3, optical splitter 4, fibre-optical tunable wave filter 5, spectrum etalon 6, photoelectric commutator 7, analog to digital converter 8;
Described fibre-optical tunable wave filter 5 is provided with light entrance port and optical emission exit, and its light entrance port connects lasing light emitter 3 through optical fiber;
Described spectrum etalon 6 is provided with a light entrance port, an electric signal delivery outlet, and described photoelectric commutator 7 is provided with a plurality of smooth entrance ports and a plurality of electric signal delivery outlet;
Described optical splitter 4 is provided with a light entrance port and a plurality of loophole that splits, one of them splits loophole is spectrum tool interface, other splits loophole is sensor interface, its light entrance port is connected to the optical emission exit of fibre-optical tunable wave filter 5 through optical fiber, its spectrum tool interface is connected to the light entrance port of spectrum etalon 6 through optical fiber, its each sensor interface is received respectively each fiber optic connector through optical fiber, and each light entrance port of receiving respectively photoelectric commutator 7 through optical fiber, each fiber optic connector respectively connects a grating sensor 9 through optical fiber;
Described analog to digital converter 8 is provided with a plurality of simulating signals input port, a digital signal output, its each simulating signal input port is connected respectively to the electric signal delivery outlet of spectrum etalon 6 and each electric signal delivery outlet of photoelectric commutator 7, and its digital signal delivery outlet is connected to the signal input of microprocessor 1.
In the embodiment of the present invention, described display screen is that resolution is the industrial LCDs of 320X240, described keyboard is 8 key boards, described lasing light emitter is that model is the laser generator of ASE-C-M-G-13, the model of described fibre-optical tunable wave filter is FFP-TF2 Tunable Filter, the model of described spectrum etalon is Mag-ID, the model of described optical splitter is FSM/ODF116, the model of described photoelectric commutator is MAX3735A, the model of described analog to digital converter is ADC08D1000, the model of described microprocessor is TMS320C6000, described grating sensor is Fiber Bragg Grating FBG.
The using method of the embodiment of the present invention is as follows:
First grating sensor is placed in thermometric environment, recycling lasing light emitter Emission Lasers bundle, laser beam is inputted optical splitter after fibre-optical tunable wave filter elimination clutter, after being divided into multichannel by optical splitter, from respectively splitting loophole, penetrate, wherein a road enters spectrum etalon, and several roads enter each grating sensor in addition;
Spectrum etalon carries out after spectral analysis the light beam receiving, and the analog electrical signal that output packet contains spectral information is to analog to digital converter;
The light beam that enters each grating sensor is reflexed to each light entrance port of photoelectric commutator by each grating sensor, when the thermometric environment through each grating sensor place, under the temperature impact of thermometric environment, optical wavelength in each grating sensor can change, and photoelectric commutator sends to analog to digital converter after each the road light beam receiving is converted to the analog electrical signal corresponding with its optical wavelength;
Analog to digital converter will be received after Ge road analog electrical signal is converted to digital signal and send to microprocessor, microprocessor carries out wavelength ratio pair by the signal from each grating sensor and the signal that includes spectral information from spectrum etalon, and according to comparison result, calculate the temperature of thermometric environment, microprocessor calculates and by its video interface, result of calculation is outputed to display screen respectively after the temperature of thermometric environment and show, by serial communication interface, send to serial communication web member, by data exchange interface, send to Ethernet web member.
In the embodiment of the present invention, can be by keyboard in advance to microprocessor input abnormality alarming threshold value before thermometric, one-level Threshold Crossing Alert threshold value and secondary Threshold Crossing Alert threshold value, microprocessor calculates after the temperature of thermometric environment, result of calculation and each threshold value are compared respectively, when exceeding abnormality alarming threshold value, result of calculation exports an abnormal signal to abnormal signal web member, when exceeding one-level Threshold Crossing Alert threshold value, result of calculation exports an out-of-limit signal of one-level to the out-of-limit signal connector of one-level, when exceeding secondary Threshold Crossing Alert threshold value, result of calculation exports an out-of-limit signal of secondary to the out-of-limit signal connector of secondary.
When the embodiment of the present invention is used, can connect and export temperature-measuring results to outer computer by Ethernet web member, also can be connected and be exported temperature-measuring results to outer computer or other serial communication device by serial communication web member, abnormal signal web member, the out-of-limit signal connector of one-level and the out-of-limit signal connector of secondary can connect respectively the equipment that warning lamp or hummer etc. have alarm function.
Claims (1)
1. an embedded optical fiber grating temperature measurement device, is characterized in that: comprise housing, be arranged on display screen, keyboard, interface socket and a plurality of fiber optic connector on housing, be arranged on microprocessor, fiber grating demodulation module in housing;
Described interface socket is provided with serial communication web member, Ethernet web member and a plurality of alarm signal web member;
Described microprocessor is provided with keyboard interface, video interface, signal input, serial communication interface, data exchange interface and a plurality of alarm signal delivery outlet, its keyboard interface connects keyboard, its video interface connects display screen, its serial communication interface is connected to serial communication web member through a serial communication chip, its data exchange interface is connected to Ethernet web member, and its each alarm signal delivery outlet is connected respectively to each alarm signal web member through relay;
Described fiber grating demodulation module comprises lasing light emitter, optical splitter, fibre-optical tunable wave filter, spectrum etalon, photoelectric commutator, analog to digital converter;
Described fibre-optical tunable wave filter is provided with light entrance port and optical emission exit, and its light entrance port connects lasing light emitter through optical fiber;
Described spectrum etalon is provided with a light entrance port, an electric signal delivery outlet, and described photoelectric commutator is provided with a plurality of smooth entrance ports and a plurality of electric signal delivery outlet;
Described optical splitter is provided with a light entrance port and a plurality of loophole that splits, one of them splits loophole is spectrum tool interface, other splits loophole is sensor interface, its light entrance port is connected to the optical emission exit of fibre-optical tunable wave filter through optical fiber, its spectrum tool interface is connected to the light entrance port of spectrum etalon through optical fiber, its each sensor interface is received respectively each fiber optic connector through optical fiber, and each light entrance port of receiving respectively photoelectric commutator through optical fiber, each fiber optic connector respectively connects a grating sensor through optical fiber;
Described analog to digital converter is provided with a plurality of simulating signals input port, a digital signal output, its each simulating signal input port is connected respectively to the electric signal delivery outlet of spectrum etalon and each electric signal delivery outlet of photoelectric commutator, and its digital signal delivery outlet is connected to the signal input of microprocessor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010577071.XA CN102109392B (en) | 2010-12-07 | 2010-12-07 | Embedding type fiber bragg grating temperature measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010577071.XA CN102109392B (en) | 2010-12-07 | 2010-12-07 | Embedding type fiber bragg grating temperature measuring device |
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| CN102109392A CN102109392A (en) | 2011-06-29 |
| CN102109392B true CN102109392B (en) | 2014-04-16 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5618108A (en) * | 1992-06-16 | 1997-04-08 | Kabushiki Kaisha Toshiba | Temperature distribution measuring apparatus using an optical fiber |
| JP3054860B2 (en) * | 1997-07-18 | 2000-06-19 | 行政院国家科学委員会 | Fiber Bragg grating temperature sensor |
| CN2807227Y (en) * | 2005-07-16 | 2006-08-16 | 刘信 | Optical fiber grating sensing and demodulating display device |
| CN101344441A (en) * | 2008-08-28 | 2009-01-14 | 上海华魏自动化设备有限公司 | Multicenter simultaneously monitored distribution type optical fiber sensing equipment |
| CN201903412U (en) * | 2010-12-07 | 2011-07-20 | 上海申瑞电力科技股份有限公司 | Embedded optical fiber grating temperature measurement device |
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- 2010-12-07 CN CN201010577071.XA patent/CN102109392B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5618108A (en) * | 1992-06-16 | 1997-04-08 | Kabushiki Kaisha Toshiba | Temperature distribution measuring apparatus using an optical fiber |
| JP3054860B2 (en) * | 1997-07-18 | 2000-06-19 | 行政院国家科学委員会 | Fiber Bragg grating temperature sensor |
| CN2807227Y (en) * | 2005-07-16 | 2006-08-16 | 刘信 | Optical fiber grating sensing and demodulating display device |
| CN101344441A (en) * | 2008-08-28 | 2009-01-14 | 上海华魏自动化设备有限公司 | Multicenter simultaneously monitored distribution type optical fiber sensing equipment |
| CN201903412U (en) * | 2010-12-07 | 2011-07-20 | 上海申瑞电力科技股份有限公司 | Embedded optical fiber grating temperature measurement device |
Non-Patent Citations (1)
| Title |
|---|
| JP特许第3054860号B2 2000.04.14 |
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