CN106248203A - Absolute radiometer and the internal heat structure of radiometer for solar irradiance calibration - Google Patents
Absolute radiometer and the internal heat structure of radiometer for solar irradiance calibration Download PDFInfo
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- CN106248203A CN106248203A CN201610675506.1A CN201610675506A CN106248203A CN 106248203 A CN106248203 A CN 106248203A CN 201610675506 A CN201610675506 A CN 201610675506A CN 106248203 A CN106248203 A CN 106248203A
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- absorbing cavity
- cavity
- radiometer
- heat sink
- solar irradiance
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- 229910052732 germanium Inorganic materials 0.000 claims description 7
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 7
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
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- 229920000647 polyepoxide Polymers 0.000 abstract description 2
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- 238000013461 design Methods 0.000 description 4
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- 238000006467 substitution reaction Methods 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Radiation Pyrometers (AREA)
Abstract
Absolute radiometer and the internal heat structure of radiometer for solar irradiance calibration, relate to remote sensor optical radiation measurement field in-orbit, solve the cavity structure in the normal cone chamber that heat structure is band cylindrical side being currently used on absolute radiometer, owing to processing technique is limited, the problem that the contact causing absorbing cavity and thermoelectric pile does not reaches the required precision of absolute radiometer, including the internal heat structure of radiometer, including tabletting, polyimides pad, thermoelectric pile, heat sink and absorbing cavity；Absorbing cavity takes the normal cone cavity configuration of the band the brim of a hat, and inwall scribbles specular layer, and central angle is 30 °.On thermoelectric pile, end face connects the absorbing cavity the brim of a hat, and bottom surface connects heat sink, uses pyroelectric effect to gather the temperature contrast between heat sink and absorbing cavity.Because the junction of each assembly is connected by epoxide-resin glue, significantly reduce the time constant of the optical radiation measurement experiment of absolute radiometer, improve the utilizability of solar irradiance inflight measurement data.
Description
Technical field
The present invention relates to remote sensor optical radiation measurement field in-orbit, be specifically related to a kind of for solar irradiance calibration exhausted
Heat structure internal to radiometer and radiometer.
Background technology
Absolute radiometer is the main monitoring instrument measuring total solar irradiance, and the benchmark as optical radiation measurement has been sent out
Open up more than 50 year.It belongs to Electrical substitution radiometer, and principle is the luminous power measured with the electrical power reproduction of equivalence, the merit of electrical power
Rate value is the measured value of luminous power.During electricity substituted, the response time of absolute radiometer optical radiation measurement experiment is extremely
Close important.Such as, the solar irradiance absolute radiometer that Changchun Institute of Optics, Fine Mechanics and Physics, CAS develops
Carry No. three C stars of wind and cloud in-orbit total solar irradiance to be measured.Owing to No. three C stars of wind and cloud bear other measuring task,
The time measuring total solar irradiance only has 8 days., limited by the angle of visual field, the track model that day is measured by every rail meanwhile
It is with limit.Therefore, how to reduce the radiometric time constant of absolute radiometer, thus use up in limited observation time
The experimental data meeting required precision that may be many becomes solar irradiance and needs the key issue of solution badly.
Existing study general uses the cavity structure in the normal cone chamber of band cylindrical side, the inwall of thermoelectric pile and absorbing cavity
Being connected, outer wall is connected with heat sink, and thermoelectric pile underlay polyimides pad is with the heat transmission of isolation thermoelectric pile bottom surface, i.e. thermoelectricity
Heap gathers the temperature contrast between heat sink and absorbing cavity by the pyroelectric effect of inside and outside wall.But, by cylindrical side machining
Technique limits, and the thermo-contact of absorbing cavity and thermoelectric pile does not reaches the required precision of absolute radiometer.Additionally, at absolute radiation photometric
In actinometry experimentation, the responsive time constant of this structure design is far below the instrument of foreign same type.
Therefore, for meeting Research Requirements to earth climatological observation, that improves absolute radiometer inflight measurement data can profit
The property used.Using new Thermal structures design to be adjusted the responsive time constant of absolute radiometer is present stage optical radiation measurement
New approaches.
Summary of the invention
The present invention solves the lumen type in the normal cone chamber that heat structure is band cylindrical side being currently used on absolute radiometer
Structure, owing to processing technique is limited, causes the contact of absorbing cavity and thermoelectric pile not reach the asking of required precision of absolute radiometer
Topic, it is provided that a kind of absolute radiometer for solar irradiance calibration and the internal heat structure of radiometer.
For the absolute radiometer of solar irradiance calibration, including diaphragm for eliminating stray light, motor, key light door screen, reference cavity and 38
Core plug；Described diaphragm for eliminating stray light is arranged on radiometer porch, and motor is fixed on the diaphragm for eliminating stray light upper right corner, and key light door screen is arranged
After diaphragm for eliminating stray light, also include that the internal heat structure of radiometer, the internal heat structure of described radiometer include tabletting, polyimides
Pad, thermoelectric pile, heat sink and absorbing cavity；Described absorbing cavity is used for electrically heated heater strip, described ginseng in light radiation region embedment
Examining chamber with absorbing cavity is that back-to-back type is connected；Described heat sink for encapsulating reference cavity and absorbing cavity；Described absorbing cavity is the band the brim of a hat
Normal cone cavity configuration, the upper end face of described thermoelectric pile connects the absorbing cavity the brim of a hat, and the bottom surface of thermoelectric pile is connected with heat sink；Described
Tabletting is fixed with the absorbing cavity the brim of a hat by polyimides pad.
The internal heat structure of absolute radiometer for solar irradiance calibration, including tabletting, polyimides pad, thermoelectricity
Heap, heat sink and absorbing cavity；Described absorbing cavity for electrically heated heater strip, scribbles mirror in light radiation region embedment inside absorbing cavity
Face reflective coating, the reference cavity of absolute radiometer is that back-to-back type is connected with absorbing cavity；Described heat sink for encapsulate reference cavity and
Absorbing cavity；Described absorbing cavity is the normal cone cavity configuration of the band the brim of a hat, and on described thermoelectric pile, end face connects the absorbing cavity the brim of a hat, thermoelectric pile
Bottom surface connect heat sink, described tabletting is fixed with the absorbing cavity the brim of a hat by polyimides pad.
Beneficial effects of the present invention:
One, the contact of the novel Thermal structures design of absolute radiometer provided by the present invention each component heat is closely, weakens epoxy
The impact that experiment is measured by resin glue skewness and imperfections thermo-contact；Described reference cavity and absorbing cavity are in back-to-back
Formula connects, and plays two aspect effects: one is the excessive error eliminating the absorbing cavity temperature-responsive caused by accidentalia；It two is
Revise the measurement data deviation that heat sink temperature drift causes.
Two, absorbing cavity takes the normal cone cavity configuration of the band the brim of a hat, and on thermoelectric pile, end face connects absorbing cavity, and bottom surface connects
Heat sink, it is the most reasonable that this temperature acquisition mode designs, and accelerates the transmission efficiency between heat sink and absorbing cavity, reduces absolute spoke
Penetrate the time constant that meter experiment is measured.
Accompanying drawing explanation
Fig. 1 is the structural representation of the inside heat structure of the absolute radiometer for solar irradiance calibration of the present invention
Figure；
Fig. 2 is the overall structure schematic diagram of the absolute radiometer for solar irradiance calibration of the present invention.
In figure: 1, tabletting, 2, polyimides pad, 3, thermoelectric pile, 4, heat sink, 5, absorbing cavity, 6, diaphragm for eliminating stray light, 7, electricity
Machine, 8, key light door screen, 9, reference cavity, 10,38 core plugs.
Detailed description of the invention
Detailed description of the invention one, combine Fig. 1 and Fig. 2 present embodiment is described, for the absolute spoke of solar irradiance calibration
Penetrate meter, including: diaphragm for eliminating stray light 6, motor 7, key light door screen 8, radiometer internal heat structure, reference cavity 5 and 38 core plug 10.
Wherein the internal heat structure such as Fig. 1 of radiometer includes: tabletting 1, polyimides pad 2, thermoelectric pile 3, heat sink 4 and absorbing cavity 5.Institute
The absorbing cavity stated has been imbedded for electrically heated heater strip in light radiation region, and cone chamber is entered by the electrical heating stage by electrical heating wire
Row heats thus realizes and the equivalence of light heating, and absorbing cavity 5 is internal scribbles direct reflection coating.Described reference cavity 9 and absorption
Chamber 5 connects in back-to-back type.Described heat sink 4 are used for encapsulating reference cavity 9 and absorbing cavity 5；Absorbing cavity 5 takes the normal cone of the band the brim of a hat
On cavity configuration, and thermoelectric pile 3, end face connects absorbing cavity 5, and bottom surface connects heat sink 4,38 described core plugs 10 and heat sink upper germanium
The wire of resistance temperature sensor is connected, and monitoring in real time is heat sink and the variations in temperature of absorbing cavity.Described tabletting 1 material is aluminum,
Play the effect of fixing absorbing cavity 5.Described polyimides pad 2 material is polyimides, plays heat transmission in the isolation direction
Effect.
In present embodiment, thermoelectric pile 3 is connected by epoxide-resin glue with the junction of absorbing cavity 5, uses this structure
Thermo-contact between the most heat sink 4 and absorbing cavity 5 is the tightst, the impact fall of resin glue skewness and imperfections thermo-contact
To minimum, significantly reduce the time constant of the optical radiation measurement experiment of absolute radiometer, improve solar irradiance in-orbit
The utilizability of measurement data.
Detailed description of the invention two, combine Fig. 1 present embodiment is described, in the absolute radiometer of solar irradiance calibration
Portion's heat structure, including tabletting 1, polyimides pad 2, thermoelectric pile 3, heat sink 4 and absorbing cavity 5；Described absorbing cavity 5 is in light radiation district
Territory has been imbedded for electrically heated heater strip, the electrical heating stage by electrical heating wire, absorbing cavity 5 is heated thus realizes and
The equivalence of light heating, absorbing cavity 5 is internal scribbles direct reflection coating.Described reference cavity 9 and absorbing cavity 5 are in back-to-back type even
Connect.Described heat sink 4 are used for encapsulating reference cavity 9 and absorbing cavity 5；Described tabletting 1 material is aluminum, plays the effect of fixing absorbing cavity 5.
Described polyimides pad 2 material is polyimides, plays the effect of heat transmission in the isolation direction.Absorbing cavity 5 takes band
The normal cone cavity configuration of the brim of a hat, and on thermoelectric pile 3, end face connects the absorbing cavity the brim of a hat, bottom surface connects heat sink 4.
It is provided with germanium thermometer temperature sensor, 38 core plugs 10 and the heat of radiometer on heat sink described in present embodiment
The wire of the germanium thermometer temperature sensor on heavy 4 is connected, in real time monitoring heat sink 3 and the variations in temperature of absorbing cavity 5.
Detailed description of the invention three, present embodiment are calibrating for solar irradiance in-orbit described in detailed description of the invention two
Absolute radiometer on the method for designing of heat structure, the method is realized by following steps:
One, threedimensional model is set up: using engineering software Soliderworks to be modeled, the mode using matrix to rotate is built
Formwork erection type.The central angle alpha of described absorbing cavity 5 is 30 °, and inner wall thickness is 0.1mm.The external diameter of the brim of a hat is according to the shape of hot link
Determine, i.e. the radius of the brim of a hat should be similar with the radius of thermoelectric pile annulus, facilitates the brim of a hat to be preferably connected with thermoelectric pile and keeps heat
Contact.After establishing the sketch of two dimension, rotate along absorbing cavity centrage, available required absolute radiometer absorbing cavity three-dimensional mould
Type.Principle same as described above is used to set up the tabletting 1 in the internal heat structure of absolute radiometer, polyimides pad 2, heat successively
Pile 3 and the model of heat sink 4.
Two, the threedimensional model setting up step one carries out machining.Wherein, absorbing cavity 5 be machined with special want
Ask.Using chemical plating process to make central angle alpha is the normal cone chamber of 30 °, the brim of a hat of absorbing cavity need polishing, throw bright with facilitate with
The accurate combination of thermoelectric pile.In the inside of absorbing cavity uses special technique to be embedded in by electrical heating wire, outer layer is wrapped up by silver.Machine
After tool processing, direct reflection coating spreading upon absorbing cavity inwall uniformly, the thickness of reflective coating layer is 0.05mm.Other groups
The machining of part is the most similar, and the contact surface after processing is both needed to polishing and throws bright.
Absolute radiometer for the calibration of solar irradiance in-orbit of the present invention, for Chinese Academy of Sciences's Changchun optics essence
Close machinery has carried out solar irradiance absolute radiometer (Solar under the support of physical study place National 863 plan
Irradiance absoluter radiometer) development work, referred to as SIAR.This radiation is calculated as Electrical substitution radiometer,
Solar irradiance is continued to monitor.For the responsive time constant of this absolute radiometer is adjusted, thus obtain more
The total solar irradiance measurement data meeting requirement of experiment,
In the constant temperature laboratory on ground, have employed the heat structure in present embodiment carry out performance adjustment.The result of debugging
Finding, after using this structure, the optical radiation measurement responsive time constant of absolute radiometer substantially reduces, original about 30s drop
Low to about 17s, meet the requirement that total solar irradiance is measured.
Claims (10)
1. for the absolute radiometer of solar irradiance calibration, including diaphragm for eliminating stray light (6), motor (7), key light door screen (8), reference
Chamber (9) and 38 core plugs (10)；Described diaphragm for eliminating stray light (6) is arranged on radiometer porch, and motor (7) is fixed on the veiling glare light that disappears
Door screen (6) right side, after key light door screen (8) is arranged on diaphragm for eliminating stray light (6), is characterized in that, also includes the internal heat structure of radiometer, institute
State the internal heat structure of radiometer and include tabletting (1), polyimides pad (2), thermoelectric pile (3), heat sink (4) and absorbing cavity (5)；
Described absorbing cavity (5) is used for electrically heated heater strip, described reference cavity (9) and absorbing cavity (5) in light radiation region embedment
Connect in back-to-back type；Described heat sink (4) are used for encapsulating reference cavity (9) and absorbing cavity (5)；
Described absorbing cavity (5) is the normal cone cavity configuration of the band the brim of a hat, and the upper end face of described thermoelectric pile (3) connects the absorbing cavity the brim of a hat,
The bottom surface of thermoelectric pile (3) is connected with heat sink (4)；Described tabletting (1) is solid with the absorbing cavity the brim of a hat by polyimides pad (2)
Fixed.
Absolute radiometer for solar irradiance calibration the most according to claim 1, it is characterised in that described heat sink
(4) arranging germanium thermometer temperature sensor on, described 38 core plugs (10) are connected with germanium thermometer temperature sensor lead, in real time
Monitor heat sink (4) and the variations in temperature of absorbing cavity (5).
Absolute radiometer for solar irradiance calibration the most according to claim 1, it is characterised in that described absorbing cavity
(5) central angle alpha is 30 °, and the inner wall thickness of absorbing cavity (5) is 0.1mm, and the radius of the absorbing cavity the brim of a hat is according to thermoelectric pile annulus
Radius determines.
Absolute radiometer for solar irradiance calibration the most according to claim 1, it is characterised in that described absorbing cavity
(5) inside scribbles direct reflection coating, and the thickness of described direct reflection coating is 0.05mm.
Absolute radiometer for solar irradiance calibration the most according to claim 1, it is characterised in that described tabletting
(1) material is aluminum, is used for fixing absorbing cavity (5).
Absolute radiometer for the calibration of solar irradiance in-orbit the most according to claim 1, it is characterised in that add at electricity
In the heat stage, by electrical heating wire, described absorbing cavity (5) is heated, it is achieved electrical heating and light heating equivalence.
7., for the internal heat structure of absolute radiometer of solar irradiance calibration, it is characterized in that, including tabletting (1), polyimides
Pad (2), thermoelectric pile (3), heat sink (4) and absorbing cavity (5)；
Described absorbing cavity (5) is in light radiation region embedment for electrically heated heater strip, and absorbing cavity (5) is internal scribbles direct reflection
Coating, the reference cavity (9) of absolute radiometer is connected in back-to-back type with absorbing cavity (5)；Described heat sink (4) are used for encapsulating reference cavity
And absorbing cavity (5) (9)；Described absorbing cavity (5) is the normal cone cavity configuration of the band the brim of a hat, and the upper end face of described thermoelectric pile (3) connects to be inhaled
Receiving the chamber the brim of a hat, the bottom surface of thermoelectric pile (3) connects heat sink (4), and described tabletting (1) passes through polyimides pad (2) and absorbing cavity
The brim of a hat is fixed.
The internal heat structure of absolute radiometer for solar irradiance calibration the most according to claim 7, it is characterised in that
Arranging germanium thermometer temperature sensor on described heat sink (4), described 38 core plugs (10) are connected with germanium thermometer temperature sensor lead,
For monitoring heat sink (4) and the variations in temperature of absorbing cavity (5) in real time.
The internal heat structure of absolute radiometer for solar irradiance calibration the most according to claim 7, it is characterised in that
The central angle alpha of described absorbing cavity (5) is 30 °, and the inner wall thickness of absorbing cavity (5) is 0.1mm, and the radius of the absorbing cavity the brim of a hat is according to warm
The radius of pile annulus determines.
The internal heat structure of absolute radiometer for solar irradiance calibration the most according to claim 7, its feature exists
In, in the electrical heating stage, by electrical heating wire, described absorbing cavity (5) is heated, it is achieved electrical heating and light heating equivalence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610675506.1A CN106248203B (en) | 2016-08-16 | 2016-08-16 | For heat structure inside the absolute radiometer and radiometer of solar irradiance calibration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610675506.1A CN106248203B (en) | 2016-08-16 | 2016-08-16 | For heat structure inside the absolute radiometer and radiometer of solar irradiance calibration |
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| CN106248203B CN106248203B (en) | 2018-03-13 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118597A (en) * | 2019-04-26 | 2019-08-13 | 中国科学院长春光学精密机械与物理研究所 | A kind of actinometer Split hot sink structure |
| CN110954211A (en) * | 2019-11-19 | 2020-04-03 | 南华大学 | Absolute radiometer thermal link capable of improving on-orbit measurement sampling rate |
| CN110954210A (en) * | 2019-11-19 | 2020-04-03 | 南华大学 | Photo-thermal receiver capable of improving measurement precision of absolute radiometer and preparation method thereof |
| CN111879409A (en) * | 2020-06-18 | 2020-11-03 | 西安交通大学 | Device and method for measuring earth outward radiation energy based on lunar-based platform |
| CN113091892A (en) * | 2021-03-12 | 2021-07-09 | 上海卫星工程研究所 | On-orbit satellite absolute radiometric calibration method and system for satellite remote sensor |
| CN114279562A (en) * | 2021-12-24 | 2022-04-05 | 西安应用光学研究所 | Calibration method for blackbody cavity absorption coefficient under variable temperature condition |
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| US3601611A (en) * | 1969-08-11 | 1971-08-24 | California Inst Of Techn | Primary absolute radiometer |
| SU1216666A1 (en) * | 1984-10-08 | 1986-03-07 | Предприятие П/Я В-8584 | Absolute radiometer |
| JPH05231932A (en) * | 1992-02-20 | 1993-09-07 | Eikou Seiki Kk | Self-calibration type solar radiometer |
| CN2343580Y (en) * | 1998-09-01 | 1999-10-13 | 中国科学院长春光学精密机械研究所 | Cavity receiver for electric calibration absolute radiometer |
| CN2685852Y (en) * | 2003-03-26 | 2005-03-16 | 中国科学院长春光学精密机械与物理研究所 | Double-conic cavity compensating absolute radiometer |
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2016
- 2016-08-16 CN CN201610675506.1A patent/CN106248203B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3601611A (en) * | 1969-08-11 | 1971-08-24 | California Inst Of Techn | Primary absolute radiometer |
| SU1216666A1 (en) * | 1984-10-08 | 1986-03-07 | Предприятие П/Я В-8584 | Absolute radiometer |
| JPH05231932A (en) * | 1992-02-20 | 1993-09-07 | Eikou Seiki Kk | Self-calibration type solar radiometer |
| CN2343580Y (en) * | 1998-09-01 | 1999-10-13 | 中国科学院长春光学精密机械研究所 | Cavity receiver for electric calibration absolute radiometer |
| CN2685852Y (en) * | 2003-03-26 | 2005-03-16 | 中国科学院长春光学精密机械与物理研究所 | Double-conic cavity compensating absolute radiometer |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118597A (en) * | 2019-04-26 | 2019-08-13 | 中国科学院长春光学精密机械与物理研究所 | A kind of actinometer Split hot sink structure |
| CN110118597B (en) * | 2019-04-26 | 2020-08-21 | 中国科学院长春光学精密机械与物理研究所 | Solar radiation score split type heat sink structure |
| CN110954211A (en) * | 2019-11-19 | 2020-04-03 | 南华大学 | Absolute radiometer thermal link capable of improving on-orbit measurement sampling rate |
| CN110954210A (en) * | 2019-11-19 | 2020-04-03 | 南华大学 | Photo-thermal receiver capable of improving measurement precision of absolute radiometer and preparation method thereof |
| CN110954210B (en) * | 2019-11-19 | 2021-11-12 | 南华大学 | Photo-thermal receiver capable of improving measurement precision of absolute radiometer and preparation method thereof |
| CN110954211B (en) * | 2019-11-19 | 2021-11-30 | 南华大学 | Absolute radiometer thermal link capable of improving on-orbit measurement sampling rate |
| CN111879409A (en) * | 2020-06-18 | 2020-11-03 | 西安交通大学 | Device and method for measuring earth outward radiation energy based on lunar-based platform |
| CN111879409B (en) * | 2020-06-18 | 2021-12-28 | 西安交通大学 | Device and method for measuring earth outward radiation energy based on lunar-based platform |
| CN113091892A (en) * | 2021-03-12 | 2021-07-09 | 上海卫星工程研究所 | On-orbit satellite absolute radiometric calibration method and system for satellite remote sensor |
| CN114279562A (en) * | 2021-12-24 | 2022-04-05 | 西安应用光学研究所 | Calibration method for blackbody cavity absorption coefficient under variable temperature condition |
| CN114279562B (en) * | 2021-12-24 | 2024-04-19 | 西安应用光学研究所 | Calibration method for blackbody cavity absorption coefficient under variable temperature condition |
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| Publication number | Publication date |
|---|---|
| CN106248203B (en) | 2018-03-13 |
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