CN111879437A - Distributed embedded optical fiber temperature measurement system - Google Patents
Distributed embedded optical fiber temperature measurement system Download PDFInfo
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- CN111879437A CN111879437A CN202010671223.6A CN202010671223A CN111879437A CN 111879437 A CN111879437 A CN 111879437A CN 202010671223 A CN202010671223 A CN 202010671223A CN 111879437 A CN111879437 A CN 111879437A
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- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
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Abstract
The invention discloses a distributed embedded optical fiber temperature measurement system, which comprises: an optical fiber; the optical processing module is used for receiving light waves and generating an adjustable pulse broadband light source and is connected with the optical fiber; the analog-to-digital converter is electrically connected with the optical processing module; the FPGA chip is electrically connected with the analog-to-digital converter and the optical processing module; the digital signal processor is electrically connected with the FPGA chip; and the ARM embedded processor is electrically connected with the digital signal processor. Therefore, the distributed embedded optical fiber temperature measuring system can achieve the purpose of equipment miniaturization, and is more compact in structure, good in stability and higher in data processing efficiency.
Description
Technical Field
The invention relates to the technical field of temperature measurement facilities, in particular to a distributed embedded optical fiber temperature measurement system.
Background
The distributed embedded optical fiber temperature measurement system is one of temperature measurement technologies, and is a system which adopts an optical fiber sensor as a temperature measurement sensor and arranges the optical fiber sensor in a region to be measured for automatic temperature monitoring, and the distributed embedded optical fiber temperature measurement system mainly performs testing according to the Raman scattering principle.
In the related technology, for the distributed embedded optical fiber temperature measurement system, the used windows system is too large and too bloated, which causes instability of long-time operation of the distributed embedded optical fiber temperature measurement system and slow response time. In addition, in order to meet various functions, hash arrangement of all equipment elements of the distributed embedded optical fiber temperature measurement system is performed, connection points are more, and data processing is complex.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, one objective of the present invention is to provide a distributed embedded optical fiber temperature measurement system, which is more concise and stable, and does not cause the situations of instability of the system and slow response time after long-time operation.
In order to solve the above problems, the present invention provides a distributed embedded optical fiber temperature measurement system, which includes: an optical fiber; the optical processing module is used for receiving light waves and generating an adjustable pulse broadband light source and is connected with the optical fiber; the analog-to-digital converter is electrically connected with the optical processing module; the FPGA chip is electrically connected with the analog-to-digital converter and the optical processing module; the digital signal processor is electrically connected with the FPGA chip; and the ARM embedded processor is electrically connected with the digital signal processor.
Therefore, the distributed embedded optical fiber temperature measuring system can achieve the purpose of equipment miniaturization, and is more compact in structure, good in stability and higher in data processing efficiency.
In some embodiments, the light processing module comprises: the device comprises a laser generator, a photoelectric receiver and a wavelength division multiplexer, wherein the laser processor is electrically connected with the FPGA chip, the photoelectric receiver is electrically connected with the wavelength division multiplexer, and the wavelength division multiplexer is electrically connected with the analog-to-digital converter.
In some embodiments, the distributed embedded fiber optic thermometry system further comprises: the optical processing module, the analog-to-digital converter, the FPGA chip, the digital signal processor and the ARM embedded processor are all integrated on the circuit board.
In some embodiments, the digital signal processor is connected to an external data interface.
In some embodiments, the optical processing module, the analog-to-digital converter, the FPGA chip, the digital signal processor and the ARM embedded processor are all electrically connected to the power supply module.
In some embodiments, the wireless transmission module is electrically connected with the digital signal processor, and the wireless transmission module is integrated with the power supply module.
In some embodiments, the wireless transmission module is a bluetooth module or an infrared transmission module.
In some embodiments, the alarm module is electrically connected with the ARM embedded processor, and the alarm module is integrated with the power supply module.
In some embodiments, the alarm module is an audio alarm module and/or a light alarm module.
In some embodiments, the analog-to-digital converter is a high-speed analog-to-digital converter.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram according to one embodiment of the present invention.
Reference numerals:
distributing an embedded optical fiber temperature measuring system 10;
a light processing module 1; an analog-to-digital converter 2; an FPGA chip 3; a digital signal processor 4; an optical fiber 5.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
The distributed embedded optical fiber temperature measurement system 10 according to the embodiment of the invention is described below with reference to the accompanying drawings, and the distributed embedded optical fiber temperature measurement system 10 solves the problems that the existing system is too bulky, the temperature measurement equipment is unstable in long-time operation, and the response time is slow; the hash of the equipment elements, more connection points, more complex data processing and the like.
As shown in fig. 1, a distributed embedded optical fiber thermometry system 10 according to an embodiment of the present invention includes an optical fiber 5, an optical processing module 1, an analog-to-digital converter 2, an FPGA (Field Programmable Gate Array) chip 3, a digital signal processor 4, and an ARM embedded processor. The optical processing module 1 is used for receiving light waves and generating an adjustable pulse broadband light source, and the optical processing module 1 is connected with an optical fiber 5 and can receive optical signals transmitted by the optical fiber 5. The detection principle of the optical fiber 5 is to measure the variation of Raman reflection inside the optical fiber along with the ambient temperature to detect the temperature variation along the whole optical fiber, and the whole optical fiber is not only used for signal transmission. The optical fiber grating sensor is different from an optical fiber grating sensor, the detection point of the optical fiber grating sensor is discontinuous, only the point (the minimum detection distance is 3 meters) contacted by a detection probe can be detected, the detection range is small, the limitation is large, and the continuity detection function is not realized.
The analog-to-digital converter 2 is electrically connected to the optical processing module 1, and the analog-to-digital converter 2 can convert the analog signal of the optical processing module 1 into a digital signal. The FPGA chip 3 is electrically connected to the analog-to-digital converter 2, and can receive the digital signal of the analog-to-digital converter 2. The FPGA chip 3 is electrically connected with the optical processing module 1, so that the FPGA chip 3 can control the optical processing module 1 to generate an adjustable pulse broadband light source. The digital signal processor 4 is electrically connected with the FPGA chip 3, the digital signal processor 4 can receive the digital signal transmitted by the FPGA chip 3 and carry out pre-processing, the ARM embedded processor is electrically connected with the digital signal processor 4, and the ARM embedded processor can further process the digital signal and can also carry out operations such as storage, display and the like.
When the distributed embedded optical fiber temperature measurement system 10 needs to measure the target temperature, the optical processing module 1 of the distributed embedded optical fiber temperature measurement system 10 emits a pulse broadband light source, and after reaching the target area through the optical fiber 5, the optical fiber 5 transmits stokes light and anti-stokes light of the target area back to the optical processing module 1. After the optical processing module 1 processes, the analog-to-digital converter 2 and the FPGA chip 3 convert the received analog signals of the stokes light and the anti-stokes light into digital signals and send the digital signals to the digital signal processor 4. And finally, the transmitted light wave data is processed by the digital signal processor 4, the temperature values of all the points on the optical fiber neural network are calculated by modeling and counting the corresponding relation between the temperature change and the wavelength change of all the points on the optical fiber, and the ARM embedded processor can perform man-machine interface display and control.
Therefore, according to the distributed embedded optical fiber temperature measurement system 10, the ARM embedded processor is arranged, human-computer interface display and control can be performed, and compared with a pc system which is mostly dependent on existing optical fiber temperature measurement, the distributed embedded optical fiber temperature measurement system is simpler and more stable, and the situations that the system is unstable after long-time operation, the response time is slow and the like cannot occur. And the distributed embedded optical fiber temperature measurement system 10 arranged in the way is more compact in structure and is beneficial to realizing the miniaturization design target.
In some embodiments, the light processing module 1 comprises: the device comprises a laser generator, a photoelectric receiver and a wavelength division multiplexer, wherein the laser processor is electrically connected with the FPGA chip 3, the photoelectric receiver is electrically connected with the wavelength division multiplexer, and the wavelength division multiplexer is electrically connected with the analog-to-digital converter 2. The laser generator generates an adjustable pulse broadband light source under the control of the FPGA chip 3. The photo-receiver may be used to receive the reflected stokes and anti-stokes waves. The wavelength division multiplexer can separate the rayleigh, stokes and anti-stokes wavelengths and transmit the separated analog signals to the analog-to-digital converter 2. It can be understood that the light processing module 1 is formed by disposing the laser generator, the photoelectric receiver and the wavelength division multiplexer adjacent to each other, so that the light processing module 1 has the functions of emitting and processing light waves and is more compact.
In some embodiments, the distributed embedded fiber temperature measurement system 10 further includes a circuit board, and the optical processing module 1, the analog-to-digital converter 2, the FPGA chip 3, the digital signal processor 4, and the ARM embedded processor are all integrated on the same circuit board. The equipment elements of the invention are integrated on a circuit board, so that the occupied space of the distributed embedded optical fiber temperature measuring system 10 can be effectively reduced, and the stability of the distributed embedded optical fiber temperature measuring system 10 in long-time operation is improved.
In some embodiments, the digital signal processor 4 of the distributed embedded fiber optic thermometry system 10 is connected to an external data interface. The external data interface can be used for conveniently distributing the embedded optical fiber temperature measurement system 10 to access the Internet of things.
In some embodiments, the distributed embedded fiber temperature measurement system 10 further includes a power supply module, and the optical processing module 1, the analog-to-digital converter 2, the FPGA chip 3, the digital signal processor 4, and the ARM embedded processor are all electrically connected to the power supply module. The power supply module of the same circuit board supplies power, so that equipment can be simplified, fault points can be reduced, and the stability of the system can be improved.
In some embodiments, the distributed embedded fiber temperature measurement system 10 further includes a wireless transmission module electrically connected to the digital signal processor 4, and the wireless transmission module is integrated with the power supply module. Various data transmission approaches increase the reliability of the system.
In some embodiments, the wireless transmission module of the distributed embedded fiber optic thermometry system 10 is a bluetooth module or an infrared transmission module. The reliability of the wireless transmission mode of the distributed embedded optical fiber temperature measurement system 10 is enhanced by using the Bluetooth module or the infrared transmission module.
In some embodiments, the distributed embedded fiber optic thermometry system 10 further comprises an alarm module electrically connected to the ARM embedded processor, the alarm module being integrated with the power supply module. After the distributed embedded optical fiber temperature measurement system 10 measures the target temperature, the temperature is processed by the ARM embedded processor, and when the temperature exceeds the specified temperature, information is fed back to a user in time through the alarm module. And the alarm module is integrated in the power supply module, so that the volume of the distributed embedded optical fiber temperature measurement system 10 can be further reduced, and the design goal of equipment miniaturization can be favorably realized.
In some embodiments, the alarm modules of the distributed embedded fiber optic thermometry system 10 are sound alarm modules and/or light alarm modules. The sound or light alarm module can most visually and fully feed back the alarm information to the user, so that the user can accurately and quickly acquire the alarm information.
In some embodiments, the adc 2 of the distributed embedded fiber optic thermometry system 10 is a high speed adc. The high-speed analog-to-digital converter has a faster conversion rate, so that the distributed embedded optical fiber temperature measurement system 10 has a faster response speed.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides an embedded optic fibre temperature measurement system of distribution which characterized in that includes:
an optical fiber;
the optical processing module is used for receiving light waves and generating an adjustable pulse broadband light source and is connected with the optical fiber;
the analog-to-digital converter is electrically connected with the optical processing module;
the FPGA chip is electrically connected with the analog-to-digital converter and the optical processing module;
the digital signal processor is electrically connected with the FPGA chip;
and the ARM embedded processor is electrically connected with the digital signal processor.
2. The distributed embedded fiber optic thermometry system of claim 1, wherein the optical processing module comprises: the device comprises a laser generator, a photoelectric receiver and a wavelength division multiplexer, wherein the laser processor is electrically connected with the FPGA chip, the photoelectric receiver is electrically connected with the wavelength division multiplexer, and the wavelength division multiplexer is electrically connected with the analog-to-digital converter.
3. The distributed embedded fiber optic thermometry system of claim 1, further comprising: the optical processing module, the analog-to-digital converter, the FPGA chip, the digital signal processor and the ARM embedded processor are all integrated on the circuit board.
4. The distributed embedded fiber optic thermometry system of claim 1, wherein the digital signal processor is connected to an external data interface.
5. The distributed embedded fiber optic thermometry system of claim 1, further comprising: and the optical processing module, the analog-to-digital converter, the FPGA chip, the digital signal processor and the ARM embedded processor are all electrically connected with the power supply module.
6. The distributed embedded fiber optic thermometry system of claim 5, further comprising: and the wireless transmission module is electrically connected with the digital signal processor and is integrated with the power supply module.
7. The distributed embedded optical fiber temperature measurement system of claim 6, wherein the wireless transmission module is a Bluetooth module or an infrared transmission module.
8. The distributed embedded fiber optic thermometry system of claim 5, further comprising: and the alarm module is electrically connected with the ARM embedded processor and is integrated with the power supply module.
9. The distributed embedded optical fiber temperature measurement system according to claim 8, wherein the alarm module is a sound alarm module and/or a light alarm module.
10. The distributed embedded fiber optic thermometry system of claim 1, wherein the analog-to-digital converter is a high-speed analog-to-digital converter.
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| CN202010671223.6A CN111879437A (en) | 2020-07-13 | 2020-07-13 | Distributed embedded optical fiber temperature measurement system |
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| CN203705085U (en) * | 2014-02-27 | 2014-07-09 | 国家电网公司 | Distributed optical fiber temperature measurement device and system |
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| CN204422103U (en) * | 2015-02-10 | 2015-06-24 | 青岛派科森光电技术股份有限公司 | Embedded type multichannel optical fiber temperature measurement system |
| CN205209651U (en) * | 2015-11-13 | 2016-05-04 | 北京航天易联科技发展有限公司 | Distributed temperature measurement module, distributed temperature measurement system |
| CN107843356A (en) * | 2017-10-26 | 2018-03-27 | 中国兵器装备集团上海电控研究所 | A kind of temperature field system based on distribution type fiber-optic |
| CN209689783U (en) * | 2019-05-30 | 2019-11-26 | 天津迪恩康硕科技有限公司 | A kind of temperature-measuring system of distributed fibers |
| CN111060216A (en) * | 2019-12-31 | 2020-04-24 | 合肥市光感芯科技有限公司 | Optical fiber temperature measurement system |
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2020
- 2020-07-13 CN CN202010671223.6A patent/CN111879437A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
| CN203705085U (en) * | 2014-02-27 | 2014-07-09 | 国家电网公司 | Distributed optical fiber temperature measurement device and system |
| CN104501995A (en) * | 2014-11-27 | 2015-04-08 | 珠海拓普智能电气股份有限公司 | Optical fiber temperature measuring system based on FPGA acquisition card |
| CN204422103U (en) * | 2015-02-10 | 2015-06-24 | 青岛派科森光电技术股份有限公司 | Embedded type multichannel optical fiber temperature measurement system |
| CN205209651U (en) * | 2015-11-13 | 2016-05-04 | 北京航天易联科技发展有限公司 | Distributed temperature measurement module, distributed temperature measurement system |
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Application publication date: 20201103 |