CN101726372A - Optical fiber fluorescence temperature sensor - Google Patents
Optical fiber fluorescence temperature sensor Download PDFInfo
- Publication number
- CN101726372A CN101726372A CN200910186444A CN200910186444A CN101726372A CN 101726372 A CN101726372 A CN 101726372A CN 200910186444 A CN200910186444 A CN 200910186444A CN 200910186444 A CN200910186444 A CN 200910186444A CN 101726372 A CN101726372 A CN 101726372A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- temperature sensor
- light source
- fluorescent
- fluorescence temperature
- 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.)
- Granted
Links
Images
Landscapes
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
An optical fiber fluorescence temperature sensor comprises an optical spectrum measuring module, a control and signal processing module, a photoelectric diode, a light source, an optical fiber beam splitter and a sensor probe, wherein the optical spectrum measuring module is connected with the control and signal processing module which is respectively connected with the photoelectric diode and the light source, and the light source is connected with the optical fiber beam splitter which is respectively connected with the photoelectric diode and the sensor probe. The invention has the advantages of high sensitivity, stable signal, excellent reliability, and simple and convenient manufacture.
Description
Technical field
The present invention relates to a kind of optical fiber fluorescence temperature sensor.
Background technology
The characteristics of luminescence of some fluorescent material and temperature have significant funtcional relationship, and the variation of measuring characteristics such as calculating material intensity of fluorescence, specific strength, life-span can obtain corresponding temperature.Fluorescence temperature sensor has optical waveguide assembly toward contact, propagates from the exciting light of light source with from the fluorescent materials signal.Shenzhen University's patent No. is 200810065176 photon crystal optical fibre fluorescent temperature sensor and measuring system, and the propagation by exciting light and flashlight can be by same light path, also can be different.Patent 200810177040 stores in the fluorescent material of a cover recess and is bonded to the optical waveguide end face utilizing same optical waveguide to propagate in the temperature sensor of exciting light and flashlight, and temperature probe seals (patent documentation 2) with protective sleeve.Protective sleeve links together with the cover that stores fluorescent material.When fluorescence temperature sensor before uses same optical waveguide to propagate exciting light and flashlight, exist signal intensity lower, thereby influence measuring accuracy.The additional mass of thermal sensible section is bigger, and probe exists sluggish to the response of fast-changing temperature; The thermal conductance disturbance of protective sleeve changes the temperature of point for measuring temperature, makes not energy measurement microcell environment temperature of sensor.
Summary of the invention
The object of the present invention is to provide a kind of optical fiber fluorescence temperature sensor, sensor probe compact conformation build is tiny, exciting light utilization factor height, and signal stabilization, the measurement of compatible fluorescence intensity method, and avoided excitating light strength to rise and fall to the influence of measuring accuracy.
The present invention is achieved like this, it comprises spectral measurement module, control and signal processing module, photodiode, light source, optical fiber beam splitter, sensor probe, it is characterized in that the spectral measurement module connects control and signal processing module, control is connected photodiode and light source respectively with signal processing module, light source connects the optical fiber beam splitter, and the optical fiber beam splitter connects photodiode and sensor probe respectively.
Light source of the present invention is through being modulated to pulsed light or filtered exciting light sources.
Sensor probe of the present invention comprises exciting light Transmission Fibers bundle, signal transmission fiber, confinement sleeve, fluorescent mixture, reflection horizon, it is characterized in that the fixedly connected six roots of sensation exciting light of confinement sleeve Transmission Fibers bundle and a signal transmission fiber, signal transmission fiber of six roots of sensation exciting light Transmission Fibers bundle parcel forms fibre bundle, one end of fibre bundle is connected with fluorescent mixture, and the fluorescent mixture periphery is connected with the reflection horizon.
Described fluorescent mixture is a cured product after the mixing of fluorescent material and fluid binder.
Described fluorescent material is ruby and other transient metal doped compound, rare earth oxide, organic fluorescence materials, complexing fluorescent material or composite fluorescent material; Described fluid binder is the presoma of epoxy resin, acrylate, silicones and transparent plastic or fusion optical plastic, silicate, borate and composition thereof.
The material in described reflection horizon is metal, alloy, organism, compound, oxide or above mixtures of material.
Advantage of the present invention is: highly sensitive, signal stabilization, reliability be good, it is easy to make.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the sectional drawing of sensor probe of the present invention.
Fig. 3 is the structural representation of sensor probe of the present invention.
Embodiment
As shown in Figure 1, the present invention is achieved like this, it comprises spectral measurement module 1, control and signal processing module 2, photodiode 3, light source 4, optical fiber beam splitter 5, sensor probe 6, it is characterized in that spectral measurement module 1 connects control and signal processing module 2, control is connected photodiode 3 and light source 4 respectively with signal processing module 2, light source 4 connects optical fiber beam splitter 5, and optical fiber beam splitter 5 connects photodiode 3 and sensor probe 6 respectively.
Light source of the present invention is through being modulated to pulsed light or filtered exciting light sources.
As Fig. 2, shown in Figure 3, sensor probe 6 of the present invention comprises exciting light Transmission Fibers bundle 7, signal transmission fiber 8, confinement sleeve 9, fluorescent mixture 10, reflection horizon 11, it is characterized in that confinement sleeve 9 fixedly six roots of sensation exciting light Transmission Fibers bundle 7 and a signal transmission fiber 8, signal transmission fiber of six roots of sensation exciting light Transmission Fibers bundle 7 parcels forms fibre bundle, one end of fibre bundle is connected with fluorescent mixture 10, and fluorescent mixture 10 peripheries are connected with reflection horizon 11.
Described fluorescent mixture is the mixing cured product of fluorescent material and fluid binder.
Described fluorescent material is ruby and other transient metal doped compound, rare earth oxide, organic fluorescence materials, complexing fluorescent material, composite fluorescent material; Described fluid binder is the presoma of epoxy resin, acrylate, silicones and transparent plastic or fusion optical plastic, silicate, borate and composition thereof.
The material in described reflection horizon is metal, alloy, organism, compound, oxide or above mixtures of material.
Temperature sensor is to utilize the temperature variant fluorescent characteristic of thermo-sensitive material to measure temperature.Can also add optical elements such as isolator, polarizer in the system light path.Light source 4 commonly used has mercury lamp, inert gas lamp for example xenon lamp, deuterium lamp, semiconductor laser, halogen tungsten lamp, according to the characteristics of luminescence of fluorescent material and the window ranges of optical waveguide (signal transmission fiber 8 and optical fiber beam splitter 5), select the suitable excitation source of wavelength, and select the color filter of suitable wave band for use.The optical fiber beam splitter is the 1X8 beam splitter, to the impartial beam splitting of incident optical power.The exciting light that comes from light source 4 becomes eight bundle equal strength light through optical fiber beam splitter 5 branches, a branch ofly suspend as redundancy, a branch of by the pilot signal of photodiode 3 reception conducts to light source, six bundles in addition are combined into the temperature-sensitive portion that exciting light Transmission Fibers bundle 7 shines sensor probe 6, parallel inciding on the concave reflection layer 11 converges on the fluorescent mixture 10 then and excites and make it luminous.The emission light of fluorescent mixture 10 part is by 11 reflection of concave reflection layer, and signal fluorescence entering signal Transmission Fibers 8 derives by spectral measurement module 1 and receives, and measures every responsive to temperature characteristic of fluorescence, for example the intensity of fluorescence lifetime, different fluorescence peaks etc.By control and the corresponding temperature of signal processing module 2 The Fitting Calculation, and the operation of whole system is coordinated in control.
As shown in the figure, six output optical fibres of 1X8 optical fiber beam splitter 5 are merged into exciting light Transmission Fibers bundle 7, and six roots of sensation optical fiber arrangements is in the border of signal transmission fiber 8, and the xsect at temperature sensor probe 6 forms the closely packed form of hexagonal jointly.Then, by confinement sleeve 9 these seven optical fiber are constrained in together.Binding effect depends on the internal diameter of confinement sleeve 9 and the tolerance fit of close packing hexagonal on the one hand, and in addition, silica gel, epoxy resin or other cementation of fissures agent can be poured in the gap in confinement sleeve 9.Like this, optical fiber head is fixed, store, transport, can not take place in the course of work each other displacement, reverse, distortion such as bending, thereby the transmission of light is reliable and stable.
The fluorescent mixture 10 fixing on the top of temperature sensor probe 6 contains the optical adhesive composition, therefore can stably be fixed on the end face of sensor probe.Therefore measure is to stablize repeatably.An exciting light part that is propagated into fluorescent mixture 10 by exciting light Transmission Fibers bundle 7 is absorbed and scattering by fluorescent mixture 10, and remaining part penetrates fluorescent mixture 10, is close to incide abreast on the concave reflection layer 11 on temperature sensor probe 6 tops.The exciting light that concave reflection layer 11 will penetrate converge in the fluorescent mixture 10 along temperature sensor probe 6 axis a bit, therefore can improve the absorptivity of 10 pairs of exciting lights of fluorescent mixture; The material emitted fluorescence also enters signal transmission fiber 8 after assembling simultaneously, so the signal fluorescence intensity is higher, can guarantee to measure precision.The material of concave reflection layer 11 can be used metal for example aluminium, gold, silver, titanium, chromium etc., or alloy such as stainless steel, also can adopt organism such as Teflon, can also adopt compound such as TiN, oxide, above mixtures of material, compound substance etc.Concave reflection layer 11 can process separately, by with the top that is fastened on temperature sensor probe 6 of confinement sleeve 9, connected mode can but be not limited to following mode: gluing, pressure drag weldering, soldering, fusion weld, spinning etc.Concave reflection layer 11 can be the form of reflectance coating or coating, is attached directly to fluorescent mixture 10 surfaces.
As shown in Figure 3, the fixing temperature-sensitive fluorescent material on the top of temperature sensor probe 6, typical fluorescent material has ruby and other transient metal doped compound, lanthanide rare earth oxide etc., also may adopt organic fluorescence materials, complexing fluorescent material, composite fluorescent material.With rare earth oxide Y2O2S:Eu is example: the 365nm ultraviolet light of high-pressure sodium lamp light source is as exciting light, and the centre wavelength of emitting fluorescence is positioned at 540nm and 630nm.Measure the fluorescence intensity of these two wavelength, try to achieve relative value, just can derive corresponding dut temperature by relative value.
Be that with the formation difference of the temperature sensor probe 6 of embodiment 1 fluorescent material can also only be fixed on the end face of signal transmission fiber 8.The light beam of exciting light Transmission Fibers bundle 7 outgoing is close to parallel inciding on the concave reflection layer 11 at free space, is reflected then.This embodiment requires the cooperation of the focal position of fluorescent mixture 10 ulking thickness and concave reflection layer 11.Any which kind of embodiment, fluorescent mixture 10 thickness enough comprise the focus of concave reflection layer 11, and focus is positioned at the light solid angle scope of accepting of signal transmission fiber 8, can guarantee that the signal intensity of fluorescence is near optimization.
The invention is not restricted to above-mentioned embodiment.
Claims (6)
1. optical fiber fluorescence temperature sensor, it comprises spectral measurement module, control and signal processing module, photodiode, light source, optical fiber beam splitter, sensor probe, it is characterized in that the spectral measurement module connects control and signal processing module, control is connected photodiode and light source respectively with signal processing module, light source connects the optical fiber beam splitter, and the optical fiber beam splitter connects photodiode and sensor probe respectively.
2. optical fiber fluorescence temperature sensor according to claim 1 is characterized in that described light source is through being modulated to pulsed light or filtered exciting light sources.
3. optical fiber fluorescence temperature sensor according to claim 1, it is characterized in that described sensor probe comprises exciting light Transmission Fibers bundle, signal transmission fiber, confinement sleeve, fluorescent mixture, reflection horizon, it is characterized in that the fixedly connected six roots of sensation exciting light of confinement sleeve Transmission Fibers bundle and a signal transmission fiber, signal transmission fiber of six roots of sensation exciting light Transmission Fibers bundle parcel forms fibre bundle, one end of fibre bundle is connected with fluorescent mixture, and the fluorescent mixture periphery is connected with the reflection horizon.
4. optical fiber fluorescence temperature sensor according to claim 3 is characterized in that described fluorescent mixture is a cured product after the mixing of fluorescent material and fluid binder.
5. optical fiber fluorescence temperature sensor according to claim 3 is characterized in that described fluorescent material is ruby and other transient metal doped compound, rare earth oxide, organic fluorescence materials, complexing fluorescent material or composite fluorescent material; Described fluid binder is the presoma of epoxy resin, acrylate, silicones and transparent plastic or fusion optical plastic, silicate, borate and composition thereof.
6. optical fiber fluorescence temperature sensor according to claim 3, the material that it is characterized in that described reflection horizon are metal, alloy, organism, compound, oxide or above mixtures of material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101864448A CN101726372B (en) | 2009-11-06 | 2009-11-06 | Optical fiber fluorescence temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101864448A CN101726372B (en) | 2009-11-06 | 2009-11-06 | Optical fiber fluorescence temperature sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101726372A true CN101726372A (en) | 2010-06-09 |
| CN101726372B CN101726372B (en) | 2012-05-02 |
Family
ID=42447594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101864448A Expired - Fee Related CN101726372B (en) | 2009-11-06 | 2009-11-06 | Optical fiber fluorescence temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101726372B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410850A (en) * | 2010-09-21 | 2012-04-11 | 王建伟 | Reflective optical fiber sensor device |
| CN102494798A (en) * | 2011-11-15 | 2012-06-13 | 清华大学 | Optical fiber temperature sensor used for measuring multipoint temperature in real time |
| CN103278183A (en) * | 2013-05-28 | 2013-09-04 | 福州英诺电子科技有限公司 | Single-fiber fluorescent fiber sensing head and optical path structure thereof |
| CN103743499A (en) * | 2014-01-13 | 2014-04-23 | 南京工程学院 | Optical fiber sensor for temperature measurement |
| CN104454203A (en) * | 2014-10-23 | 2015-03-25 | 福建船政交通职业学院 | Method for measuring flow through fluorescent temperature sensors and air-fuel ratio control system |
| CN106124088A (en) * | 2016-08-23 | 2016-11-16 | 北京博大华电测控技术有限公司 | A kind of built-in cable connector temperature optical fiber monitoring sensor |
| CN110220612A (en) * | 2019-05-29 | 2019-09-10 | 华南师范大学 | A kind of temperature sensor and preparation method thereof of hollow microstructured optical fibers |
| CN115736835A (en) * | 2022-11-28 | 2023-03-07 | 江苏百宁盈创医疗科技有限公司 | High-precision noninvasive fluorescence detection device |
-
2009
- 2009-11-06 CN CN2009101864448A patent/CN101726372B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410850A (en) * | 2010-09-21 | 2012-04-11 | 王建伟 | Reflective optical fiber sensor device |
| CN102494798A (en) * | 2011-11-15 | 2012-06-13 | 清华大学 | Optical fiber temperature sensor used for measuring multipoint temperature in real time |
| CN102494798B (en) * | 2011-11-15 | 2014-11-26 | 清华大学 | Optical fiber temperature sensor used for measuring multipoint temperature in real time |
| CN103278183A (en) * | 2013-05-28 | 2013-09-04 | 福州英诺电子科技有限公司 | Single-fiber fluorescent fiber sensing head and optical path structure thereof |
| CN103743499A (en) * | 2014-01-13 | 2014-04-23 | 南京工程学院 | Optical fiber sensor for temperature measurement |
| CN104454203A (en) * | 2014-10-23 | 2015-03-25 | 福建船政交通职业学院 | Method for measuring flow through fluorescent temperature sensors and air-fuel ratio control system |
| CN104454203B (en) * | 2014-10-23 | 2017-05-17 | 福建船政交通职业学院 | Method for measuring flow through fluorescent temperature sensors and air-fuel ratio control system |
| CN106124088A (en) * | 2016-08-23 | 2016-11-16 | 北京博大华电测控技术有限公司 | A kind of built-in cable connector temperature optical fiber monitoring sensor |
| CN110220612A (en) * | 2019-05-29 | 2019-09-10 | 华南师范大学 | A kind of temperature sensor and preparation method thereof of hollow microstructured optical fibers |
| CN110220612B (en) * | 2019-05-29 | 2020-12-01 | 华南师范大学 | Temperature sensor of hollow microstructure optical fiber and preparation method thereof |
| CN115736835A (en) * | 2022-11-28 | 2023-03-07 | 江苏百宁盈创医疗科技有限公司 | High-precision noninvasive fluorescence detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101726372B (en) | 2012-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101726372B (en) | Optical fiber fluorescence temperature sensor | |
| EP0521128B1 (en) | Method and apparatus for optically measuring concentration of an analyte | |
| CN101701855A (en) | Fluorescent temperature sensor probe and manufacturing method thereof | |
| CN102261966B (en) | Fluorescent optical fiber temperature measurement optical system | |
| CN102494874B (en) | Tunable laser type fiber Bragg grating wavelength demodulation device | |
| CA2287309A1 (en) | Improved fluorescence sensing device | |
| CN105223181A (en) | A kind of fluorescence detection device | |
| CN105699327A (en) | System and method for detecting laser based on micro-nano Er-doped fiber | |
| CN103364370A (en) | Annular core optical fiber sensor based on annular chamber decline | |
| Thompson | Fluorescence-based fiber-optic sensors | |
| CN107991740A (en) | A kind of integrated photodetector part | |
| CN205038162U (en) | Fluorescence detection device | |
| CN101109663A (en) | Optical fiber temperature sensor based on bending loss | |
| CN101135641A (en) | Fluorescence spectrophotometer on-line or remote measurement | |
| EP2485024A1 (en) | Temperature sensitive body, optical temperature sensor, temperature measuring device, and heat flux measuring device | |
| CN105372206A (en) | Parallel remote optical fiber sensing system for detecting various gas refractive indexes | |
| CN106841125B (en) | A kind of optical fiber integration liquid probe based on transmission measurement | |
| CN202083626U (en) | Laser gas analyzer for self-focusing lens collimation | |
| JP2018518669A (en) | Optical analysis system with optical delivery of an optical conduit | |
| CN102859345A (en) | Automatic analyzer | |
| CN206146827U (en) | Plate palladium optic fibre hydrogen sensor | |
| CN109001168A (en) | A kind of light-conducting capillaries photometer | |
| CN2771851Y (en) | Optical fiber coupling device for fluorospectro photometer | |
| CN214044336U (en) | Semiconductor laser | |
| CN204613454U (en) | The semiconductor optical device that based semiconductor laser instrument is integrated |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20120502 Termination date: 20141106 |
|
| EXPY | Termination of patent right or utility model |