CN204405221U - Based on the dump temp measuring system of distribution type fiber-optic - Google Patents

Based on the dump temp measuring system of distribution type fiber-optic Download PDF

Info

Publication number
CN204405221U
CN204405221U CN201520022318.XU CN201520022318U CN204405221U CN 204405221 U CN204405221 U CN 204405221U CN 201520022318 U CN201520022318 U CN 201520022318U CN 204405221 U CN204405221 U CN 204405221U
Authority
CN
China
Prior art keywords
signal
optic
module
distribution type
laser
Prior art date
Application number
CN201520022318.XU
Other languages
Chinese (zh)
Inventor
孔龙
杨岸
张晶
闫程鹏
李�昊
谢璇
邵沁园
朱少甫
Original Assignee
安徽理工大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 安徽理工大学 filed Critical 安徽理工大学
Priority to CN201520022318.XU priority Critical patent/CN204405221U/en
Application granted granted Critical
Publication of CN204405221U publication Critical patent/CN204405221U/en

Links

Abstract

The utility model discloses a kind of dump temp measuring system based on distribution type fiber-optic, it is characterized in that comprising: laser signal generation module, laser signal acquisition module, signal amplification module and data disaply moudle; Laser signal generation module comprises pulsed laser and light wavelength division multiplexing; Laser signal acquisition module comprises sensor fibre, temperature calibration optical fiber and photodetector; Containing special signal amplification circuit in signal amplification module, after photodiode converts becomes voltage signal, amplification process is carried out to electric signal; Signal processing module is STM32 processor, for the treatment of the electric signal received; Data disaply moudle is LED display, shows the dut temperature obtained after STM32 process in real time.The utility model can measure the rate of flow of fluid in display pipes in real time, and prompting related personnel takes countermeasure, avoids the generation of disaster accident.

Description

Based on the dump temp measuring system of distribution type fiber-optic

Technical field

The utility model relates to technical field of temperature measurement, is specially a kind of dump temp measuring system based on distribution type fiber-optic.

Background technology

When coal is deposited in coal yard, because coal itself has propensity, under the effect of oxygen in atmosphere, there will be dieseling, if the Temperature Distribution of energy Real-Time Monitoring dump, before temperature reaches natural conditions, take corresponding solution thus avoid the generation of spontaneous combustion, effectively can reduce economic loss, reduce environmental pollution.

Due to the bulky of dump, realize the sensor needing to use One's name is legion to the monitoring of multi-point temp, traditional distributed sensor also exists difficulty in laying and power supply.The utility model discloses a kind of highly sensitive, good reliability, not by the dump temp measuring system based on distribution type fiber-optic of electromagnetic interference influence, can be used for the monitoring of dump temperature everywhere, and before temperature reaches autoignition conditions, early warning can be sent ahead of time.Can measure temperature everywhere in real time, and algorithm is simple, application STM32 carries out hardware calculating, and measuring speed is fast; Use laser to measure, Phototube Coupling, decrease the impact of electrical noise, measuring accuracy is high.

Utility model content

The utility model object is to provide a kind of dump temp measuring system based on distribution type fiber-optic, has solved the difficult problem in prior art suitable application area and measuring accuracy.

In order to achieve the above object, the technical scheme that the utility model adopts is: based on the dump temp measuring system of distribution type fiber-optic, it is characterized in that comprising: laser signal generation module, laser signal acquisition module, signal amplification module and data disaply moudle; Laser signal generation module comprises pulsed laser and light wavelength division multiplexing; Laser signal acquisition module comprises sensor fibre, temperature calibration optical fiber and photodetector; Containing special signal amplification circuit in signal amplification module, after photodiode converts becomes voltage signal, amplification process is carried out to electric signal; Signal processing module is STM32 processor, for the treatment of the electric signal received; Data disaply moudle is LED display, shows the dut temperature obtained after STM32 process in real time.

Described a kind of dump temp measuring system based on distribution type fiber-optic, is characterized in that: described pulsed laser produces the narrower and pulse that power is larger of pulsewidth, is shared the light wavelength division multiplexing of a passage by beam splitting light.

Described a kind of dump temp measuring system based on distribution type fiber-optic, it is characterized in that: described sensor fibre gathers the pulse that laser instrument produces, there is Raman Back Scattering in a fiber, the scattered light produced is after Interleave muiltiplexing component element filtering, obtain anti Stokes scattering light and Stokes ratio, and be sent to photodetector.

Described a kind of dump temp measuring system based on distribution type fiber-optic, is characterized in that: the optical signals avalanche photodide detected is converted into electric signal and is sent to amplification module by described photodetector.

Described a kind of dump temp measuring system based on distribution type fiber-optic, is characterized in that: described STM32 uses pre-set programs to carry out computing to received signal, and is sent to host computer display.

The utility model adopts pulsed laser under the effect of clock-pulse generator, produce the narrower and pulse that power is larger of pulsewidth, be injected into sensor fibre, there is Raman Back Scattering in a fiber, the scattered light produced is after Interleave muiltiplexing component element filtering, obtain anti-Stokes and Stokes ratio, both become voltage signal by the photodiode converts of photodetector respectively, electric signal after conversion carries out conversion by STM32 and calculates under the control of pulse signal generator, and concrete numerical value is sent to display screen display by RS485 bus, countermeasure is taked to point out related personnel.

The utility model has the advantages that: the utility model has registration, measuring accuracy is high, speed is fast, highly sensitive, not by the plurality of advantages such as electromagnetic interference influence.

Accompanying drawing explanation

Fig. 1 is structured flowchart of the present utility model.

Embodiment

Structured flowchart as shown in Figure 1, based on the dump temp measuring system of distribution type fiber-optic, comprise laser signal generation module, laser signal acquisition module, signal amplification module, signal processing module and data disaply moudle, it is characterized in that: pulsed laser produces the narrower and pulse that power is larger of pulsewidth under the effect of clock-pulse generator, be injected into sensor fibre, there is Raman Back Scattering in a fiber, the scattered light produced is after Interleave muiltiplexing component element filtering, obtain anti-Stokes and Stokes ratio, both become voltage signal by the photodiode converts of photodetector respectively, electric signal after conversion carries out conversion by STM32 and calculates under the control of pulse signal generator, and concrete numerical value is sent to display screen display by RS485 bus, countermeasure is taked to point out related personnel.

Claims (5)

1. based on the dump temp measuring system of distribution type fiber-optic, it is characterized in that comprising: laser signal generation module, laser signal acquisition module, signal amplification module and data disaply moudle; Laser signal generation module comprises pulsed laser and light wavelength division multiplexing; Laser signal acquisition module comprises sensor fibre, temperature calibration optical fiber and photodetector; Containing special signal amplification circuit in signal amplification module, after photodiode converts becomes voltage signal, amplification process is carried out to electric signal; Signal processing module is STM32 processor, for the treatment of the electric signal received; Data disaply moudle is LED display, shows the dut temperature obtained after STM32 process in real time.
2. the dump temp measuring system based on distribution type fiber-optic according to claim 1, is characterized in that: described pulsed laser produces the narrower and pulse that power is larger of pulsewidth, is shared the light wavelength division multiplexing of a passage by beam splitting light.
3. the dump temp measuring system based on distribution type fiber-optic according to claim 1, it is characterized in that: described sensor fibre gathers the pulse that laser instrument produces, there is Raman Back Scattering in a fiber, the scattered light produced is after Interleave muiltiplexing component element filtering, obtain anti Stokes scattering light and Stokes ratio, and be sent to photodetector.
4. the dump temp measuring system based on distribution type fiber-optic according to claim 1, is characterized in that: the optical signals avalanche photodide detected is converted into electric signal and is sent to amplification module by described photodetector.
5. the dump temp measuring system based on distribution type fiber-optic according to claim 1, is characterized in that: described STM32 uses pre-set programs to carry out computing to received signal, and is sent to host computer display.
CN201520022318.XU 2015-01-13 2015-01-13 Based on the dump temp measuring system of distribution type fiber-optic CN204405221U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520022318.XU CN204405221U (en) 2015-01-13 2015-01-13 Based on the dump temp measuring system of distribution type fiber-optic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520022318.XU CN204405221U (en) 2015-01-13 2015-01-13 Based on the dump temp measuring system of distribution type fiber-optic

Publications (1)

Publication Number Publication Date
CN204405221U true CN204405221U (en) 2015-06-17

Family

ID=53429071

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520022318.XU CN204405221U (en) 2015-01-13 2015-01-13 Based on the dump temp measuring system of distribution type fiber-optic

Country Status (1)

Country Link
CN (1) CN204405221U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105371980A (en) * 2015-11-13 2016-03-02 北京航天易联科技发展有限公司 Cultural relic site temperature monitoring system and monitoring method
CN107576419A (en) * 2017-09-13 2018-01-12 武汉中航传感技术有限责任公司 A kind of optical fiber temperature-measurement device and method
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
CN107990998A (en) * 2017-11-27 2018-05-04 南京南瑞继保电气有限公司 A kind of multichannel distributed fiber temperature measuring device and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105371980A (en) * 2015-11-13 2016-03-02 北京航天易联科技发展有限公司 Cultural relic site temperature monitoring system and monitoring method
CN107576419A (en) * 2017-09-13 2018-01-12 武汉中航传感技术有限责任公司 A kind of optical fiber temperature-measurement device and method
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
CN107990998A (en) * 2017-11-27 2018-05-04 南京南瑞继保电气有限公司 A kind of multichannel distributed fiber temperature measuring device and method
CN107990998B (en) * 2017-11-27 2020-01-10 南京南瑞继保电气有限公司 Multichannel distributed optical fiber temperature measuring device and method

Similar Documents

Publication Publication Date Title
CN102052930B (en) Fiber grating distributed strain sensor and strain monitoring method thereof
CN102620857B (en) Brillouin optical time domain reflectometer for single-photon detection based on edged filter method
CN104101447B (en) Distributed optical fiber temperature sensor and method for removing nonlinear error of same
CN103389039B (en) A kind of high-speed, high precision light curtain pick-up unit based on FPGA and FPAA
CN102628698A (en) Distributed optical fiber sensor and information demodulating method
CN103308146B (en) The signal demodulating system of Optic Fibre F-P Acoustic Emission Sensor
CN101975626B (en) Brillouin scattering based distributive fiber sensing system
CN104792343B (en) Brillouin light fiber sensor system and method for sensing that a kind of single-ended structure is dynamically measured
CN102425995B (en) Optical fiber sensor system for measuring static/dynamic strain and temperatures simultaneously and method for optical fiber sensor system
CN201845405U (en) Optical fiber grating temperature fire alarm system employing combination of etalon and temperature control grating
CN102680980A (en) Pulse laser distance measuring method
CN101603866B (en) Distributed optical fiber stress temperature sensing device and sensing method thereof
CN201885733U (en) Ultra-long-range fully-distributed optical fiber Rayleigh and Raman scattering sensor fused with optical fiber Raman frequency shifter
CN201945571U (en) Multi-point measurement and control system for air quality in large space
CN102226703A (en) Distributed fiber multi-parameter sensor and multi-parameter measuring method
CN103323040A (en) Multi-parameter distributed optical fiber sensing device
CN101598581B (en) Flow velocity measuring system and method thereof based on distributed optical fiber temperature sensor technology
CN103278271B (en) Distributed optical fiber monitoring system and monitoring method thereof
CN102914519B (en) Optical fiber type laser liquid turbidity measuring device and measuring method
CN103398740A (en) Real-time on-line monitoring device for monitoring abnormal operation of switch cabinet
CN202204524U (en) Distributed type optical fiber sensing device capable of simultaneously detecting Brillouin and Raman
CN105136177A (en) Sub-millimeter spatial resolution distributed optical fiber sensing device and method
CN105004355B (en) Phi-OTDR reinforcing method based on polarized orthogonal optical pulse pair and device thereof
CN101625247B (en) Large-range high-speed fiber bragg grating sensor demodulation device and demodulation method based on DSP
CN102636459A (en) Forward scattering and transmission combined visibility measuring instrument and measuring method thereof

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150617

Termination date: 20160113