CN107367335A - Based on cadmium sulfide fibre optic temperature sensor Temperature Demodulation System - Google Patents
Based on cadmium sulfide fibre optic temperature sensor Temperature Demodulation System Download PDFInfo
- Publication number
- CN107367335A CN107367335A CN201610316461.9A CN201610316461A CN107367335A CN 107367335 A CN107367335 A CN 107367335A CN 201610316461 A CN201610316461 A CN 201610316461A CN 107367335 A CN107367335 A CN 107367335A
- Authority
- CN
- China
- Prior art keywords
- temperature
- optical fiber
- cadmium sulfide
- temperature sensor
- cadmium
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- 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
Abstract
The present invention provides the Temperature Demodulation System based on cadmium sulfide temperature sensor, including the light source, coupling device, reflective cadmium sulfide temperature sensor being sequentially connected, in addition to spectrometer and the control device being connected with the spectrometer are connected with the coupling device.The present invention proposes the demodulating system of the fibre optic temperature sensor based on cadmium sulfide, CdS semiconduct material is 480~600nm to the wave-length coverage of light absorbs, this wave band belongs to visible light wave range, therefore the fibre optic temperature sensor demodulating system based on cadmium sulfide is simpler, and cost is lower.
Description
Technical field
The present invention relates to the temperature mediation system of sensor technical field, especially sensor.
Background technology
With the development of Fibre Optical Communication Technology, based on the fibre optic temperature sensor of optical principle because of it
The advantages that electromagnetism interference, high temperature resistant, high voltage withstanding, resistant to chemical etching and low-loss, obtains
It is widely applied.The research contents of fibre optic temperature sensor has been concentrated mainly on three both at home and abroad at present
Individual aspect：First, the research of temperature sensitive material, more semi-conducting materials are applied to light
On fine temperature sensor；Second, the research of system architecture and modulation technique；Third, commercialization is practical
The research of change, i.e., from practical application, to particular requirement can be met, suitable for specific field
The research of the temperature sensor of conjunction.From the point of view of current present Research, using most semiconductors
Material is gallium arsenide semiconductor material, and existing demodulating system structure and demodulation techniques are also mainly to use
In GaAs fibre optic temperature sensor.The present invention, which proposes, a kind of new can be used for fiber optic temperature
The semi-conducting material of sensor --- cadmium sulfide, and construct based on cadmium sulfide optical fiber sensing
The Temperature Demodulation System of device.
The prior art similar with the present invention：
201120470074.3 monochromatic light road Fiber-optic Temperature Sensors Based on Semiconductor Optical Abs orption.This is practical
It is new to disclose a kind of monochromatic light road Fiber-optic Temperature Sensors Based on Semiconductor Optical Abs orption, including GaAs temperature
Spend sensing probe, infrared LED, input coupling device, output coupling device, phototriode
Pipe, amplifying circuit and display device, the light signal output end of the infrared LED pass through described
Input coupling device is connected with the optical signal input of the GaAs sensing probe, and GaAs is quick
The light signal output end of sense probe is sequentially connected output coupling device, phototriode and amplification electricity
The input connection of Lu Houyu display devices.Absorption ripple of the GaAs sensing probe near infrared light
Peak value is varied with temperature and changed, and is changed so as to cause transmissivity to vary with temperature, and utilizes arsenic
Change this characteristic of gallium sensing probe, using infrared light as medium, temperature signal is converted into telecommunications
Number, so as to realize the purpose of monitoring temperature.
CN02249704.8 fibre optic temperature sensors, this utility model relate to one kind and be based on light
The fibre optic temperature sensor of wavelength detecting, it include dc source, light source, fiber coupler,
Semiconductor GaAs temperature probe, grating splitting system, ccd detector, image pick-up card,
Signal transacting and display system, the input of light source are connected with dc source, the output of light source
End is connected with the input of fiber coupler, an output end and the semiconductor arsenic of fiber coupler
To change gallium temperature probe to be connected, its another output end is connected with the input of grating splitting system,
The output end of grating splitting system is connected with CCD photoelectric detector input, CCD photoelectricity
The output end of detector is connected with signal transacting and display system, the output end of image pick-up card
It is connected with signal transacting and display system.
The shortcomings that prior art：
The demodulating system for the temperature sensor that presently, there are is both for GaAs temperature sensor
Demodulation, gallium arsenide semiconductor material is near infrared band to the wave-length coverage of light absorbs, such as
For 880~920nm, this wave band belongs to infrared band, light source from infrared medium and
Comparatively cost is higher for spectrometer.
The content of the invention
The present invention is intended to provide two kinds of Temperature Demodulation Systems based on cadmium sulfide temperature sensor.
A kind of Temperature Demodulation System based on reflective cadmium sulfide temperature sensor, including connect successively
Light source, coupling device, the reflective cadmium sulfide temperature sensor connect, in addition to coupled with described
Device connects spectrometer and the control device being connected with the spectrometer.
Wherein, the reflective cadmium sulfide temperature sensor includes：
The incident optical and the output optical fiber being set up in parallel,
Cadmium sulphide membrane, it is arranged at the incident optical outgoing end face and the output optical fiber
On incident end face；
Away from the incident optical and the output optical fiber, the reflection being arranged on the cadmium sulphide membrane
Film；For entering the vulcanization cadmium film by the incident optical when light, then through described
Reflectance coating reflects, and returns to the output optical fiber through the cadmium sulphide membrane again.
Wherein, the signal that the control device includes being connected with each other reconciles component and display module.
Another Temperature Demodulation System based on transmission-type cadmium sulfide temperature sensor, including successively
Light source, transmission-type cadmium sulfide temperature sensor, spectrometer and the control device of connection.
Wherein, the transmission-type cadmium sulfide temperature sensor includes：
Incident optical, the output optical fiber and be arranged at the incident optical and the output optical fiber it
Between cadmium sulphide membrane；The incident optical, cadmium sulphide membrane, the output optical fiber keep conllinear；
After light of being taken in enters the cadmium sulphide membrane by the incident optical, unabsorbed light passes through
The output optical fiber simultaneously reaches the spectrometer.
Wherein, the signal that the control device includes being connected with each other reconciles component and display module.
Beneficial effect：
The shortcomings that existing for above technology, the present invention propose the fiber optic temperature based on cadmium sulfide
The demodulating system of sensor, CdS semiconduct material are visible ray to the wave-length coverage of light absorbs
Wave band, this wave band belong to visible light wave range, therefore the fibre optic temperature sensor based on cadmium sulfide
Demodulating system is simpler, and cost is lower.
Brief description of the drawings
Fig. 1 is the structural representation of the demodulating system of the embodiment of the present invention 1.
Fig. 2 is the structural representation of the reflective cadmium sulfide temperature sensor of the embodiment of the present invention 1.
Fig. 3 is the structural representation of the demodulating system of the embodiment of the present invention 2.
Fig. 4 is the structural representation of the transmission-type cadmium sulfide temperature sensor of the embodiment of the present invention 2.
Embodiment
Below, the embodiment of the present invention will be described in detail with reference to accompanying drawing.
First, the operation principle that cadmium sulfide of the present invention is used for temperature sensor thermometric is introduced.
1) according to M.B.Panish research, in 20~972K temperature ranges, straight gap half
The energy gap of conductor is varied with temperature and changed, and variation relation formula is：
Eg(T)-Eg(0)-γT2/ (β+T) is the energy gap that temperature is 0K, and is related to material
Two constants.
2) when light passes through semi-conducting material, when photon energy exceedes energy gap, photon is just
It can be absorbed by material, the wavelength of absorption is limited to：λg(T)=Eg(T)/hc is wherein absorbing wavelength,
For energy gap energy, so the wavelength of semi-conducting material absorption edge and temperature positive correlation.
3) energy gap varies with temperature, and the absorption curve of function of wavelength will relatively move,
The absorption coefficient of semi-conducting material is relevant with temperature and lambda1-wavelength, and its expression formula is：
α (λ, T)=α0·[hv-Eg(T)1/2], v is photon frequency, is the constant relevant with material.
4) to sum up, when the temperature increases, the absorption line of semi-conducting material is to long wave length direction
Mobile, therefore, the light intensity change of permeable material, the optical signal that photo-detector captures also occurs
Change, we can obtain including temperature, wavelength, light intensity at different temperatures by spectrometer
The spectrogram of signal, temperature signal is then demodulated by spectrogram by signal processing system.
Embodiment 1
Temperature Demodulation System based on cadmium sulfide fibre optic temperature sensor is built
As shown in figure 1, the Temperature Demodulation System of the present embodiment is to be based on reflective cadmium sulfide temperature
What sensor was built, the Temperature Demodulation System include be sequentially connected light source 1, coupling device 2,
Reflective cadmium sulfide temperature sensor 3, in addition to be connected with the coupling device 2 spectrometer 4,
And the control device 5 being connected with the spectrometer 4.Control device includes the letter being connected with each other
Number reconcile component and display module (not shown), to realize the conciliation of signal and point
Analysis display.
Wherein, with reference to shown in Fig. 2, the reflective cadmium sulfide temperature sensor includes：
Incident, the output optical fiber common optical fiber 1,
Cadmium sulphide membrane 2, it is arranged at the incident optical outgoing end face and the emergent light
On fine incident end face；
Away from the incidence, the output optical fiber common optical fiber 1, it is arranged at the cadmium sulphide membrane 2
On reflectance coating 3；For entering institute by incident, the output optical fiber common optical fiber 4 when light
The vulcanization cadmium film 2 is stated, then is reflected through the reflectance coating 3, passes through the vulcanization again
Cadmium film film 2 returns to incident, the output optical fiber common optical fiber 1.
Based on reflective cadmium sulfide fibre optic temperature sensor Temperature Demodulation System operation principle
Within the system, the light that light source is sent enters vulcanization via the incidence end of fiber coupling device
Cadmium fibre optic temperature sensor, when light passes through cadmium sulfide, photon energy is more than energy gap energy
When, photon can be absorbed, and the photon (there are about 70%) of energy relatively low (i.e. wavelength is longer) can
To return in optical fiber through CdS semiconduct material and via mirror surface, then via coupling
The exit end of device enters spectroanalysis instrument, and spectrometer receives the optical signal being reflected back through analysis
Calculating can obtain light reflection collection of illustrative plates, the light absorbs edge wavelength of obtained reflectance spectrum figure be with
Temperature is relevant, signal processing system according to absorption edge wavelength and the corresponding relation of temperature, by
Spectrogram signal demodulates temperature signal.
Embodiment 2
Based on building for transmission-type cadmium sulfide fibre optic temperature sensor Temperature Demodulation System.
As shown in figure 3, the Temperature Demodulation System of the present embodiment is to be based on reflective cadmium sulfide temperature
What sensor was built, the Temperature Demodulation System includes light source 1, the transmission-type vulcanization being sequentially connected
Cadmium temperature sensor 2, spectrometer 3 and control system 4.Control system 4 includes mutual
The signal of connection reconciles component and display module (not shown), to realize signal
Reconcile and analysis is shown.
Wherein, with reference to shown in Fig. 4, the transmission-type cadmium sulfide temperature sensor includes：
Incident optical 1, the output optical fiber 3 and it is arranged at the incident optical 1 and the outgoing
Cadmium sulphide membrane 2 between optical fiber 3；The incident optical 1, cadmium sulphide membrane 2, outgoing
Optical fiber 3 keeps conllinear；Light of being taken in enters the cadmium sulphide membrane 2 by the incident optical 1
Afterwards, unabsorbed light by the output optical fiber 3 and reaches the spectrometer.
Operation principle based on transmission-type cadmium sulfide fibre optic temperature sensor Temperature Demodulation System：
Within the system, the light that light source is sent enters transmission-type cadmium sulfide optical fiber temperature by incident optical
Sensor is spent, when light passes through cadmium sulphide membrane, photon energy is more than the light of energy gap energy
Son is absorbed, and unabsorbed light (there are about 70%) can pass through cadmium sulphide film and via emergent light
Fibre enters spectroanalysis instrument, and spectrometer receives optical signal and obtains transmitted light spectrogram through analysis, thoroughly
It is relevant with temperature to penetrate the light absorbs edge wavelength of spectrogram, therefore signal processing system is according to absorption
The corresponding relation of edge wavelength and temperature, temperature signal is demodulated by transmitted light spectrogram.
Described above is only the embodiment of the application, it is noted that is led for this technology
For the those of ordinary skill in domain, on the premise of the application principle is not departed from, it can also make
Some improvements and modifications, these improvements and modifications also should be regarded as the protection domain of the application.
Claims (6)
1. a kind of Temperature Demodulation System based on cadmium sulfide temperature sensor, it is characterised in that including connecting successively
Light source, coupling device, the reflective cadmium sulfide temperature sensor connect, in addition to be connected with the coupling device
Spectrometer and the control device being connected with the spectrometer.
2. Temperature Demodulation System according to claim 1, it is characterised in that the reflective cadmium sulfide temperature
Degree sensor includes：
The incident optical and the output optical fiber being set up in parallel,
Cadmium sulphide membrane, it is arranged at the incident optical outgoing end face and the output optical fiber incident end face
On；
Away from the incident optical and the output optical fiber, the reflectance coating being arranged on the cadmium sulphide membrane；For
When light enters the cadmium sulphide membrane by the incident optical, then reflected through the reflectance coating, and thoroughly
Cross the cadmium sulphide film film and return to the output optical fiber.
3. Temperature Demodulation System according to claim 1, it is characterised in that the control device includes phase
The signal to connect reconciles component and display module.
4. a kind of Temperature Demodulation System based on cadmium sulfide temperature sensor, it is characterised in that including connecting successively
Light source, transmission-type cadmium sulfide temperature sensor, spectrometer and the control device connect.
5. Temperature Demodulation System according to claim 4, it is characterised in that the transmission-type cadmium sulfide temperature
Degree sensor includes：
Incident optical, the output optical fiber and the vulcanization being arranged between the incident optical and the output optical fiber
Cadmium film；The incident optical, cadmium sulphide membrane, the output optical fiber keep conllinear；Be taken in light by it is described enter
Optical fiber is penetrated into after the cadmium sulphide membrane, unabsorbed light passes through the output optical fiber and described in reaching
Spectrometer.
6. Temperature Demodulation System according to claim 4, it is characterised in that the control device includes phase
The signal to connect reconciles component and display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610316461.9A CN107367335A (en) | 2016-05-12 | 2016-05-12 | Based on cadmium sulfide fibre optic temperature sensor Temperature Demodulation System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610316461.9A CN107367335A (en) | 2016-05-12 | 2016-05-12 | Based on cadmium sulfide fibre optic temperature sensor Temperature Demodulation System |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107367335A true CN107367335A (en) | 2017-11-21 |
Family
ID=60303752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610316461.9A Pending CN107367335A (en) | 2016-05-12 | 2016-05-12 | Based on cadmium sulfide fibre optic temperature sensor Temperature Demodulation System |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107367335A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323143A (en) * | 2020-04-21 | 2020-06-23 | 西安和其光电科技股份有限公司 | Signal processing method and system for semiconductor absorption spectrum temperature measurement |
| CN116577890A (en) * | 2023-07-07 | 2023-08-11 | 成都亨通光通信有限公司 | Layer stranded type mining optical cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6019507A (en) * | 1992-11-25 | 2000-02-01 | Terumo Cardiovascular Systems Corporation | Method of making temperature sensor for medical application |
| CN2583650Y (en) * | 2002-11-20 | 2003-10-29 | 顺德特种变压器厂 | Optical fiber temperature sensor |
| US20050169348A1 (en) * | 2002-06-06 | 2005-08-04 | Wei Chen | Nanoparticle thermometry and pressure sensors |
| WO2011131724A1 (en) * | 2010-04-21 | 2011-10-27 | Commissariat à l'énergie atomique et aux énergies alternatives | Method and device for measuring temperatures using semiconducting nanocrystals |
| CN202329868U (en) * | 2011-11-23 | 2012-07-11 | 成都酷玩网络科技有限公司 | Single optical channel semiconductor absorption-type optic fiber temperature sensor |
-
2016
- 2016-05-12 CN CN201610316461.9A patent/CN107367335A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6019507A (en) * | 1992-11-25 | 2000-02-01 | Terumo Cardiovascular Systems Corporation | Method of making temperature sensor for medical application |
| US20050169348A1 (en) * | 2002-06-06 | 2005-08-04 | Wei Chen | Nanoparticle thermometry and pressure sensors |
| CN2583650Y (en) * | 2002-11-20 | 2003-10-29 | 顺德特种变压器厂 | Optical fiber temperature sensor |
| WO2011131724A1 (en) * | 2010-04-21 | 2011-10-27 | Commissariat à l'énergie atomique et aux énergies alternatives | Method and device for measuring temperatures using semiconducting nanocrystals |
| CN202329868U (en) * | 2011-11-23 | 2012-07-11 | 成都酷玩网络科技有限公司 | Single optical channel semiconductor absorption-type optic fiber temperature sensor |
Non-Patent Citations (2)
| Title |
|---|
| 陈润泰 等: "《检测技术与智能仪表》", 31 January 1999 * |
| 陈玉安 等: "《现代功能材料》", 30 June 2012 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323143A (en) * | 2020-04-21 | 2020-06-23 | 西安和其光电科技股份有限公司 | Signal processing method and system for semiconductor absorption spectrum temperature measurement |
| CN116577890A (en) * | 2023-07-07 | 2023-08-11 | 成都亨通光通信有限公司 | Layer stranded type mining optical cable |
| CN116577890B (en) * | 2023-07-07 | 2023-09-19 | 成都亨通光通信有限公司 | Layer stranded type mining optical cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10416085B2 (en) | Distributed optical fiber identification system and method for seepage conditions of hydraulic structure and base thereof | |
| CN105758434B (en) | Sensing demodulation method based on linear array InGaAs scanning FBG reflectance spectrums | |
| US6469358B1 (en) | Three color quantum well focal plane arrays | |
| CN101625247B (en) | Large-range high-speed fiber bragg grating sensor demodulation device and demodulation method based on DSP | |
| CN102607618A (en) | Optical fiber sensing method, optical fiber sensing device and using method of optical fiber sensing device | |
| CN104655566B (en) | A kind of label-free optics biochemical sensitive detecting system of integreted phontonics array | |
| CN103776475A (en) | Optical fiber sensor and sensing method based on linear filter and photoelectric detector | |
| CN104535090A (en) | Wavelength-matched double FBG demodulation systems based on cascaded long period grating | |
| CN107367335A (en) | Based on cadmium sulfide fibre optic temperature sensor Temperature Demodulation System | |
| CN207300268U (en) | Fiber Bragg Grating FBG demodulating equipment | |
| CN106643840B (en) | A kind of optical fiber sensor demodulation device based on double array waveguide gratings | |
| CN113358218B (en) | Lithium niobate waveguide infrared two-photon coincidence measurement device and method based on periodic polarization | |
| CN105157830A (en) | Laser power meter based on infrared radiation measurement | |
| CN204788657U (en) | Laser power meter based on infrared measures | |
| CN116678513A (en) | Fiber bragg grating-based temperature measurement system and temperature measurement method | |
| CN104034694B (en) | Integrated waveguide optical biochemical sensor based on the demodulation of luminous power ratio | |
| CN106024921A (en) | Suspension type visible light and near infrared waveband silicon-based optical waveguide integrated photoelectric detector | |
| US20220381644A1 (en) | Method and system for extracting information from an optical signal | |
| CN207036296U (en) | A kind of optical cable temperature measurement early warning system based on DTS | |
| CN104614070A (en) | Multi-spectral measurement type light resource monitoring method and system | |
| CN202393530U (en) | Portable colorimetric optical fiber temperature measuring system | |
| CN206095462U (en) | Fiber grating sensing system | |
| CN209559236U (en) | Tunnel information detection system based on Fibre Optical Sensor | |
| CN117309163A (en) | Double-end readout circuit, readout method and detection system of superconducting single photon detector | |
| CN113639774B (en) | Quasi-distributed sensing device based on dual-wavelength double-pulse light source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171121 |