CN107515058B - Fiber-optical grating temperature sensor temperature calibration thermostat under thermal vacuum environment - Google Patents
Fiber-optical grating temperature sensor temperature calibration thermostat under thermal vacuum environment Download PDFInfo
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- CN107515058B CN107515058B CN201610826973.XA CN201610826973A CN107515058B CN 107515058 B CN107515058 B CN 107515058B CN 201610826973 A CN201610826973 A CN 201610826973A CN 107515058 B CN107515058 B CN 107515058B
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- inner cylinder
- outer barrel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/007—Testing
Abstract
The invention discloses fiber-optical grating temperature sensor temperature calibration thermostat under a kind of thermal vacuum environment, including outer barrel, inner cylinder, heating plate, high-precision platinum resistor temperature sensor and temperature conditioning unit, inner/outer tube one integral sleeve structure of adiabatic fixed formation, heating plate is pasted onto outer barrel outer surface, on inner cylinder outer surface, platinum resistance temperature sensor is installed on the outer tube inner surface of thermostat, inner cylinder outer surface, interior tube inner surface and it is opened in the inner cylinder inside groove of inner cylinder inner wall, heating plate is connected to temperature conditioning unit with platinum resistance temperature sensor, fiber-optical grating temperature sensor to be calibrated is placed in the inner cylinder inside groove of same temperature field with platinum resistance temperature sensor, to measure wavelength by fiber Bragg grating (FBG) demodulator.The configuration of the present invention is simple, easy to operate, low manufacture cost, calibration sensor quantity is more, and the fiber-optical grating temperature sensor for being applicable in bare optical fibers and bare optical gratings temperature sensor and various packing forms carries out temperature calibration experiment.
Description
Technical field
The invention belongs to optical fiber sensing field of measuring technique, and in particular to fiber grating temperature under a kind of thermal vacuum environment
Spend sensor temperature calibration thermostat.
Background technology
As China's spacecraft Project R＆D requires to be continuously improved, to measuring spacecraft under ground simulation space environment
Temperature, monitors spacecraft structure temperature in real time and the demand of in-orbit progress heath state of spacecraft diagnosis is very urgent.With
Traditional electricity class temperature sensor (platinum resistance, thermocouple etc.) is compared, and fiber-optical grating temperature sensor has electromagnetism interference, not shadow
Ring external electromagnetic field, high sensitivity, light flexible, do not produce self-heating, many reference amounts composite sensing measurement, large space distributed measurement
And the remarkable advantage easy to networking, therefore, fiber grating temperature sensor technology can meet large complicated satellite and large scale structure
In terms of part (such as net-shape antenna, truss structure, solar wing, mechanical arm) ground space environmental test and in-orbit health status diagnosis
Application demand, this also to fiber-optical grating temperature sensor vacuum (be less than 1.0 × 10-4Pa) thermal environment (- 150 DEG C~+150
DEG C) under measurement accuracy requirement it is higher and higher, it is necessary to fiber-optical grating temperature sensor carry out temperature calibration.
Under atmospheric condition, conventional fiber grating temperature sensor calibration mode is directly by fiber-optical grating temperature sensor
Itself it is placed in constant temperature gas cabinet or isothermal liquid bath and carries out temperature calibration, and is needed in view of fiber-optical grating temperature sensor
The actual conditions used under thermal vacuum environment, constant temperature gas cabinet or isothermal liquid bath are not suitable with thermal vacuum environment, therefore are
Fiber-optical grating temperature sensor temperature measurement accuracy is effectively ensured, it is necessary to for fiber-optical grating temperature sensor onsite application operating mode, if
Count and optical fiber grating temperature caliberating device is used under new thermal vacuum environment.
Due to (being less than 1.0 × 10 in vacuum environment-4Pa used under), heat convection is not present under vacuum environment, only supported
Conduction heat exchange and radiation heat transfer mode, therefore, it is necessary to the calibration of practical service environment is carried out to fiber-optical grating temperature sensor.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of optical fiber grating temperature biography that can adapt to high vacuum environment
Sensor temperature calibration thermostat, there is provided stable and uniform temperature field, realizes temperature calibration purpose, it is intended to meet thermal vacuum environment
Lower fiber-optical grating temperature sensor temperature calibration requirement, suitable for bare optical fibers and bare optical gratings temperature sensor and various packing forms
Fiber-optical grating temperature sensor carry out temperature calibration experiment.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
Fiber-optical grating temperature sensor temperature calibration thermostat under thermal vacuum environment, including outer barrel, inner cylinder, heating
Piece, high-precision platinum resistor temperature sensor and temperature conditioning unit, outer barrel surfaces externally and internally, inner cylinder outer surface even application high emissivity material
Material, inner/outer tube one integral sleeve structure of adiabatic fixed formation, some heating plates are pasted onto outer barrel outer surface and inner cylinder outer surface
On to keep its temperature, multiple high-precision platinum resistor temperature sensors are separately positioned on outer tube inner surface, inner cylinder outer surface, interior
In tube inner surface and inner cylinder inside groove, inner cylinder inside groove is opened on inner cylinder inner wall to accommodate fiber grating to be calibrated along longitudinal direction
Temperature sensor and platinum resistance temperature sensor, heating plate are used to respectively connect by cable with high-precision platinum resistor temperature sensor
Measurement and control of temperature unit is connected to, heating plate is connected to temperature conditioning unit with high-precision platinum resistor temperature sensor, and temperature conditioning unit measures peace
The platinum resistance temperature data of tube inner surface outside thermostat, supply to the heating plate for being pasted onto thermostat outer barrel outer surface
Electricity, controls thermostat outer barrel wall temperature；Temperature conditioning unit measures the platinum installed in thermostat inner cylinder outer surface, interior tube inner surface
Resistance temperature data, power to the heating plate for being pasted onto thermostat inner cylinder outer surface, control thermostat inner cylinder wall temperature, outside
Cylinder carries out radiation heat transfer with inner cylinder, realizes that inner cylinder inside groove becomes temperature uniform field.
Wherein, inner cylinder is provided with cover at the top of inner cylinder, inner cylinder bottom cover, the perforation of inner cylinder bottom harness, inner cylinder hangers, interior
Harness perforation at the top of cylinder inside groove, inner cylinder, inner cylinder hangers utilize cover and inner cylinder bottom at the top of fastening bolt fixation inner cylinder barrel, inner cylinder
Portion's cover, some inner cylinder inside grooves are opened on inner cylinder inner wall along longitudinal direction.
Wherein, outer barrel is provided with cover at the top of outer barrel, outer barrel bottom cover, the perforation of outer barrel bottom harness, outer barrel top line
Beam perforation, retainer ring, outer barrel bottom retainer ring, outer barrel fastening bolt at the top of outer barrel, using loom connection inner cylinder hangers with
Outer barrel fastening bolt, rotates up retainer ring at the top of outer barrel and tenses loom with outer barrel bottom retainer ring, loom will
Outer barrel fixes one integral sleeve structure of formation with adiabatic be connected of inner cylinder.
Wherein, inside and outside sleeve selects the good material of heat conduction to make, such as aluminium or copper material, outside outer barrel surfaces externally and internally, inner cylinder
Surface even application high-emissivity material is for example pitch-dark or carries out surface anodization to its outer barrel surfaces externally and internally, inner cylinder outer surface.
Wherein, outer tube inner surface, inner cylinder outer surface, which are uniformly pasted, is covered with heating plate.
Wherein, inner cylinder inner wall is slotted, and fluting quantity is unlimited, and groove width is 1~10mm, preferably 2mm, and separation is 1~
10mm, preferably 5mm.
Wherein, outer barrel leaves harness perforation with inner cylinder top, bottom cover, and it is exterior that current supply cable is pierced by thermostat connection
Temperature conditioning unit.
The present invention thermostat have it is simple in structure, easy to operate, low manufacture cost, calibration sensor quantity is more,
Under thermal vacuum environment, in -150 DEG C~+150 DEG C wide temperature ranges, the optical fiber grating temperature of user's stabilization is fast and accurately supplied to
Demarcate environment, in -150 DEG C~+150 DEG C temperature ranges, the stability and uniformity of temperature, respectively reached ± 0.1 DEG C and
± 0.5 DEG C of level, meets fiber-optical grating temperature sensor temperature calibration requirement under thermal vacuum environment, is applicable in bare fibre light
The fiber-optical grating temperature sensor of grid temperature sensor and various packing forms carries out temperature calibration experiment.
Brief description of the drawings
Fig. 1 is the thermostat discrete state schematic perspective view for showing an exemplary embodiment according to the present invention, its
Middle outer barrel 200, inner cylinder 100, inner cylinder top cover 10, inner cylinder bottom cover 11, inner cylinder bottom harness perforation 12, inner cylinder hangers
13rd, cover 20, outer barrel bottom cover 21, outer barrel bottom harness perforation 22, outer barrel top harness perforation 23, outer barrel top at the top of outer barrel
Portion's retainer ring 24, outer barrel bottom retainer ring 25, outer barrel fastening bolt 26, outer barrel 200, inner cylinder 100 are in separated state.
Fig. 2 is the profile of Fig. 1, wherein inner cylinder inside groove 14.
Fig. 3 is the thermostat outer barrel schematic perspective view for showing an exemplary embodiment according to the present invention, its China and foreign countries
Cover 20, outer barrel top harness perforation 23, outer barrel fastening bolt 26 at the top of cylinder 200, outer barrel.
Fig. 4 is that the solid for showing another angle of the thermostat outer barrel of an exemplary embodiment according to the present invention is shown
It is intended to, wherein outer barrel 200, outer barrel bottom cover 21, outer barrel bottom harness perforation 22.
Fig. 5 is the thermostat inner cylinder schematic perspective view for showing an exemplary embodiment according to the present invention, wherein interior
Cover 10, inner cylinder hangers 13, inner cylinder top harness perforation 15 at the top of cylinder 100, inner cylinder.
Fig. 6 is that the solid for showing another angle of the thermostat inner cylinder of an exemplary embodiment according to the present invention is shown
It is intended to, wherein inner cylinder 100, inner cylinder bottom cover 11, inner cylinder bottom harness perforation 12, inner cylinder hangers 13.
Embodiment
It is permanent to fiber-optical grating temperature sensor temperature calibration under a kind of thermal vacuum environment of the present invention referring to the drawings
The structure of warm device is described in detail, but this describe it is merely illustrative, it is no intended to protection scope of the present invention carry out
Any restrictions.
As shown in Figures 1 to 6, which includes outer barrel 200, inner cylinder 100, inner cylinder top cover 10, inner cylinder bottom cylinder
Lid 11, inner cylinder bottom harness perforation 12, inner cylinder hangers 13, inner cylinder inside groove 14, inner cylinder top harness perforation 15, outer barrel top cover
20th, outer barrel bottom cover 21, outer barrel bottom harness perforation 22, outer barrel top harness perforation 23, outer barrel top retainer ring 24, outer barrel
Bottom retainer ring 25, outer barrel fastening bolt 26.200 surfaces externally and internally of thermostat outer barrel, 100 outer surface even application of inner cylinder are occurred frequently
Penetrate rate material.
Wherein, inner cylinder hangers 13 fixes 100 barrel of inner cylinder, inner cylinder top cover 10 and inner cylinder bottom cylinder using fastening bolt
Lid 11, then, using loom connection inner cylinder hangers 13 and outer barrel fastening bolt 26, then, rotates up solid at the top of outer barrel
Determine ring 24 to tense loom with outer barrel bottom retainer ring 25, finally, loom is adiabatic even by outer barrel 200 and inner cylinder 100
Connect one integral sleeve structure of fixed formation.
Heating plate is pasted onto 200 outer surface of thermostat outer barrel, 100 outer surface of inner cylinder.High-precision platinum resistor temperature sensing
Device is installed on 200 inner surface of thermostat outer barrel, 100 outer surface of inner cylinder, 100 inner surface of inner cylinder and inner cylinder inside groove 14, outer barrel
200 inner surface of heating plate and outer barrel, 100 inner surface of 100 outer surface of inner cylinder and inner cylinder of 200 outer surfaces and 100 outer surface of inner cylinder
High-precision platinum resistor temperature sensor by cable through harness perforation 12 at the top of inner cylinder, inner cylinder bottom harness perforation 12, outer
Harness perforation 23 is connected to temperature conditioning unit at the top of cylinder bottom harness perforation 22 and outer barrel.Temperature conditioning unit is measured to be filled installed in constant temperature
The platinum resistance temperature data of outer tube inner surface are put, powers to the heating plate for being pasted onto thermostat outer barrel outer surface, controls constant temperature
200 barrel temperature of device outer barrel；Temperature conditioning unit measures the platinum installed in 100 outer surface of thermostat inner cylinder, 100 inner surface of inner cylinder
Resistance temperature data, power to the heating plate for being pasted onto 100 outer surface of thermostat inner cylinder, control thermostat inner cylinder 100
Wall temperature, outer barrel 200 carry out radiation heat transfer with inner cylinder 100, are finally reached thermal equilibrium state, realize that inner cylinder inside groove 14 becomes temperature
Uniform field, fiber-optical grating temperature sensor to be calibrated are placed in installed in inner cylinder inside groove 14 with high-precision platinum resistor temperature sensor
In same inside groove 14, in same temperature uniform field, fiber Bragg grating (FBG) demodulator, fiber Bragg grating (FBG) demodulator note are connected to by optical cable
High-precision platinum resistor temperature in groove when optic fiber grating wavelength during the lower temperature stabilization of record, temperature conditioning unit record temperature stabilization
Value, obtains under different temperatures operating mode, the optic fiber grating wavelength in same inside groove 14 and high-precision platinum resistor temperature value correspondence,
The multiple groove inner fiber grating wavelengths of synchronization gain and high-precision platinum resistor temperature value correspondence, complete multiple optical fiber grating temperatures
Sensor needs the synchronous calibration test under thermal vacuum environment.
The present invention thermostat have it is simple in structure, easy to operate, low manufacture cost, calibration sensor quantity is more,
Under thermal vacuum environment, in -150 DEG C~+150 DEG C wide temperature ranges, the optical fiber grating temperature of user's stabilization is fast and accurately supplied to
Demarcate environment, in -150 DEG C~+150 DEG C temperature ranges, the stability and uniformity of temperature, respectively reached ± 0.1 DEG C and
± 0.5 DEG C of level, meets fiber-optical grating temperature sensor temperature calibration requirement under thermal vacuum environment, is applicable in bare fibre light
The fiber-optical grating temperature sensor of grid temperature sensor and various packing forms carries out temperature calibration experiment.
Although giving detailed description and explanation to the embodiment of the present invention above, it should be noted that
We can carry out the above embodiment various equivalent changes and modification according to the conception of the present invention, its caused function is made
, should all be within protection scope of the present invention during with the spirit still covered without departing from specification and attached drawing.
Claims (10)
1. fiber-optical grating temperature sensor temperature calibration thermostat under thermal vacuum environment, including outer barrel, inner cylinder, heating plate,
High-precision platinum resistor temperature sensor and temperature conditioning unit, outer barrel surfaces externally and internally, inner cylinder outer surface even application high-emissivity material,
Inner/outer tube one integral sleeve structure of adiabatic fixed formation, some heating plates are pasted onto on outer barrel outer surface and inner cylinder outer surface and use
To keep its temperature, multiple high-precision platinum resistor temperature sensors are separately positioned on outer tube inner surface, inner cylinder outer surface, in inner cylinder
In surface and inner cylinder inside groove, inner cylinder inside groove is opened on inner cylinder inner wall to accommodate optical fiber grating temperature to be calibrated along longitudinal direction
Sensor and high-precision platinum resistor temperature sensor, heating plate are used to distinguish by cable with high-precision platinum resistor temperature sensor
Temperature conditioning unit is connected to, temperature conditioning unit measures the high-precision platinum resistor temperature data of the tube inner surface outside thermostat, gives
The heating plate power supply of thermostat outer barrel outer surface is pasted onto, controls thermostat outer barrel wall temperature；Temperature conditioning unit measures installation
In thermostat inner cylinder outer surface, the high-precision platinum resistor temperature data of interior tube inner surface, to being pasted onto outside thermostat inner cylinder
The heating plate power supply on surface, controls thermostat inner cylinder wall temperature, and outer barrel and inner cylinder carry out radiation heat transfer, realize inner cylinder inside groove into
For temperature uniform field.
2. thermostat as claimed in claim 1, wherein, inner cylinder is provided with cover, inner cylinder bottom cover, inner cylinder at the top of inner cylinder
Harness perforation at the top of bottom harness perforation, inner cylinder hangers, inner cylinder inside groove, inner cylinder, inner cylinder hangers fix inner cylinder using fastening bolt
Cover and inner cylinder bottom cover at the top of barrel, inner cylinder, some inner cylinder inside grooves are opened on inner cylinder inner wall along longitudinal direction.
3. thermostat as claimed in claim 1, wherein, outer barrel is provided with cover, outer barrel bottom cover, outer barrel at the top of outer barrel
Harness perforation, outer barrel top retainer ring, outer barrel bottom retainer ring, outer barrel fastening bolt, utilize at the top of bottom harness perforation, outer barrel
Loom connects inner cylinder hangers and outer barrel fastening bolt, and rotating up retainer ring at the top of outer barrel will be exhausted with outer barrel bottom retainer ring
Edge harness tenses, and outer barrel is fixed one integral sleeve structure of formation by loom with adiabatic be connected of inner cylinder.
4. such as claim 1-3 any one of them thermostats, wherein, inside and outside sleeve selects the good material of heat conduction to make, outside
Cylinder surfaces externally and internally, inner cylinder outer surface even application high-emissivity material carry out its outer barrel surfaces externally and internally, inner cylinder outer surface
Surface anodization.
5. thermostat as claimed in claim 4, wherein, the good material of heat conduction is aluminium or copper material.
6. thermostat as claimed in claim 4, wherein, high-emissivity material is pitch-dark.
7. such as claim 1-3 any one of them thermostats, wherein, cloth is uniformly pasted in outer tube inner surface, inner cylinder outer surface
Full heating plate.
8. such as claim 1-3 any one of them thermostats, wherein, inner cylinder inner wall fluting, fluting quantity is unlimited, and groove width is
1 ~ 10mm, separation are 1 ~ 10mm.
9. thermostat as claimed in claim 8, wherein, groove width 2mm, separation 5mm.
10. such as claim 1-3 any one of them thermostats, wherein, outer barrel leaves line with inner cylinder top, bottom cover
Beam is perforated, and current supply cable is pierced by the exterior temperature conditioning unit of thermostat connection, and thermostat connection external fiber grating is pierced by for optical cable
(FBG) demodulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610826973.XA CN107515058B (en) | 2016-09-14 | 2016-09-14 | Fiber-optical grating temperature sensor temperature calibration thermostat under thermal vacuum environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610826973.XA CN107515058B (en) | 2016-09-14 | 2016-09-14 | Fiber-optical grating temperature sensor temperature calibration thermostat under thermal vacuum environment |
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| Publication Number | Publication Date |
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| CN107515058A CN107515058A (en) | 2017-12-26 |
| CN107515058B true CN107515058B (en) | 2018-04-27 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108680284B (en) * | 2018-07-03 | 2020-03-24 | 富通集团（天津）超导技术应用有限公司 | Temperature calibration device and calibration method for fiber bragg grating temperature sensor in low-temperature environment |
| CN110514120A (en) * | 2019-08-26 | 2019-11-29 | 北京卫星环境工程研究所 | Displacement measurement system for vacuum low-temperature environment |
| CN112344973B (en) * | 2020-09-27 | 2022-07-26 | 北京遥测技术研究所 | Fiber grating etalon based on closed cavity metal plate temperature control and use method |
| CN113340468A (en) * | 2021-05-25 | 2021-09-03 | 上海申矽凌微电子科技有限公司 | Automatic testing system and method for precision of temperature sensor chip in full temperature range |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2932343Y (en) * | 2006-08-09 | 2007-08-08 | 刘爽 | Thermometer tester |
| CN102984832A (en) * | 2012-12-06 | 2013-03-20 | 中国科学院国家天文台 | High-precision constant-temperature barrel |
| CN202886317U (en) * | 2012-11-26 | 2013-04-17 | 湖南科技学院 | Grain water content measuring instrument adopting temperature control capacitance method |
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2016
- 2016-09-14 CN CN201610826973.XA patent/CN107515058B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2932343Y (en) * | 2006-08-09 | 2007-08-08 | 刘爽 | Thermometer tester |
| CN202886317U (en) * | 2012-11-26 | 2013-04-17 | 湖南科技学院 | Grain water content measuring instrument adopting temperature control capacitance method |
| CN102984832A (en) * | 2012-12-06 | 2013-03-20 | 中国科学院国家天文台 | High-precision constant-temperature barrel |
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