CN105509895B - One kind having telescope optical system radiation calibration method - Google Patents
One kind having telescope optical system radiation calibration method Download PDFInfo
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- CN105509895B CN105509895B CN201510987675.4A CN201510987675A CN105509895B CN 105509895 B CN105509895 B CN 105509895B CN 201510987675 A CN201510987675 A CN 201510987675A CN 105509895 B CN105509895 B CN 105509895B
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- temperature measurement
- measurement instrument
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- spectroscopic temperature
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- 230000003287 optical effect Effects 0.000 title claims abstract description 41
- 230000005855 radiation Effects 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 48
- 230000003595 spectral effect Effects 0.000 claims abstract description 40
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 238000013178 mathematical model Methods 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims abstract description 5
- 238000012634 optical imaging Methods 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000001228 spectrum Methods 0.000 claims description 13
- 230000004313 glare Effects 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 238000004164 analytical calibration Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 claims description 2
- 238000002310 reflectometry Methods 0.000 claims description 2
- 239000002360 explosive Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/52—Radiation pyrometry, e.g. infrared or optical thermometry using comparison with reference sources, e.g. disappearing-filament pyrometer
- G01J5/53—Reference sources, e.g. standard lamps; Black bodies
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/52—Radiation pyrometry, e.g. infrared or optical thermometry using comparison with reference sources, e.g. disappearing-filament pyrometer
- G01J5/54—Optical arrangements
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/80—Calibration
- G01J5/802—Calibration by correcting for emissivity
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Radiation Pyrometers (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
One kind having telescope optical system radiation calibration method, by solving the problems, such as the radiation calibration with telescope optical system spectroscopic temperature measurement instrument for a long time to the calibration of spectral power receptance function, this method is according to spectral radiance theory and optical imaging concept, simulate infinity standard target, pass through the accurate test to modules Standard Ratio parameter, the mathematical model of calibration is established to realize the calibration with telescope optical system spectroscopic temperature measurement instrument radiant power, this method solve spectrographic detection field for telescope optical system spectroscopic temperature measurement instrument radiation absolute power calibration problem, and simple possible, high certainty of measurement.
Description
Technical field
The invention belongs to optical precision testing fields, are related specifically to a kind of with telescope optical system radiation calibration method
Background technology
In radiation calibration field, solves the spoke in laboratory of the spectroscopic temperature measurement instrument with camera optical system at present
The problem of penetrating calibration, mainly completes the spectroscopic temperature measurement instrument with telescope optical system the calibration of relative radiated power, or
It is calibrated at a distance in outfield.
For first method, the opposite size of radiant power is only provided, it is more that cannot accurately provide radiant power on earth
It is few；Second method is calibrated at a distance in outfield, not high due to being influenced calibration accuracy by ambient lighting and weather condition.
Therefore the calibration for absolute radiation power being carried out for the spectroscopic temperature measurement instrument with telescope optical system is always the problem in industry.
Invention content
The present invention, which devises one kind, having telescope optical system radiation calibration method, by spectral power receptance function
It demarcates to solve the problems, such as the radiation calibration with telescope optical system spectroscopic temperature measurement instrument for a long time.
Technical scheme is as follows：One kind having telescope optical system radiation calibration method, includes the following steps：
1）Design the standard set-up with telescope optical system spectroscopic temperature measurement instrument
According to the test request with telescope optical system spectroscopic temperature measurement instrument, it is imaged on unlimited distance, therefore, has and hopes
The standard set-up of distance light system spectrum temperature measurer is made of standard sources module and optical alignment system.
Wherein standard sources module include standard sources and its power supply system, spectral radiance monitoring unit, can darkening
Column provides and exports continuously adjustable radiant power in the case where spatial distribution is constant.
Optical alignment system is made of optical alignment mirror and its accurate mounting and adjusting pedestal.
Finally, the spectral reflectivity of the spectral power distribution of standard sources and optical alignment mirror carries out school by metrological service
It is accurate.
2）Establish the mathematical model with telescope optical system radiation calibration.
According to optical imaging concept and spectral radiance detection theory it is found that spectroscopic temperature measurement instrument is assigned in the irradiation in standard sources
Spectral power receptance function K (λ) be given by：
K(λ)=Φs(λ)·ρ(λ)/[V(λ)- V 0] formula（1）
In formula, Φ s (λ) are the spectral power of standard sources, and ρ (λ) is the spectral reflectance of optical alignment mirror.V (λ) be
The output spectrum signal of the lower spectroscopic temperature measurement instrument of standard sources irradiation,V 0To demarcate the veiling glare signal of environment.According to formula（1）, by
It has been demarcated via metrological service in the spectral power of standard sources and the spectral reflectance of optical alignment mirror, as long as accurate test exists
The output spectrum signal of the lower spectroscopic temperature measurement instrument of standard sources irradiation andV 0The veiling glare signal of environment can be obtained the spectrum work(of instrument
Rate receptance function K (λ), unit W/V.
3）Calibration
Standard sources is opened, spectroscopic temperature measurement instrument is placed in parallel light path, is directed at incident ray, and to spectroscopic temperature measurement instrument
Carry out top to bottom, left and right, front and rear adjusting, make light source as it is high-visible and full of spectral radiometer measurement visual field.Adjustment criteria
The iris of light source makes the output signal of spectroscopic temperature measurement instrument in the best test scope of spectral radiometer.
Secondly, iris is closed, the veiling glare signal of environment is read by spectroscopic temperature measurement instrumentV 0, then iris is opened, by
Spectroscopic temperature measurement instrument reads the output signal V (λ) of standard sources.
Finally, the spectral power receptance function K (λ) of spectroscopic temperature measurement instrument, and input light are calculated according to the mathematical model of foundation
Compose temperature measurer calibration system.Complete radiation calibration.
The beneficial effects of the invention are as follows：This method is according to spectral radiance theory and optical imaging concept, simulation infinity mark
Quasi- target is established the mathematical model of calibration and is looked in the distance to realize to have by the accurate test to modules Standard Ratio parameter
The calibration of optical system spectroscopic temperature measurement instrument radiant power, this method solve in spectrographic detection field for having optical system of looking in the distance
The problem that spectroscopic temperature measurement instrument radiation absolute power of uniting is calibrated, and simple possible, high certainty of measurement.
Description of the drawings
Fig. 1 is the spectroscopic temperature measurement instrument calibration principle figure of the present invention.
Fig. 2 is the standard sources module map of the present invention.
Specific implementation mode
The preferred embodiment of the present invention based on the spectroscopic temperature measurement for the thermometric that explodes, radiation temperature range be generally 1000 DEG C~
It 4000 DEG C, since temperature is excessively high, can not be demarcated using standard blackbody, generally pass through accurately testing and tying to radiant power
Planck law is closed to realize the calibration of high-temperature part temperature.
（1）Caliberating device forms
Its calibration principle is shown in Fig. 1, is mainly made of standard sources module and optical alignment system, wherein standard sources module
Including standard sources and its power supply system, spectral radiance monitoring unit, iris etc., provide constant in spatial distribution
In the case of export continuously adjustable radiant power, optical alignment system is mainly by optical alignment mirror and its accurate mounting and adjusting pedestal
Deng composition.
（2）Calibration principle
According to optical imaging concept, when the light beam that standard sources is sent out becomes directional light after optical alignment system, it is
Ideal infinity standard target detects theoretical it is found that reaching the standard spectrum power Φ (λ) of spectroscopic temperature measurement instrument by spectral radiance
It can be given by respectively with the spectral power receptance function K (λ) of spectroscopic temperature measurement instrument：
Φ(λ)=Φs(λ)·ρ(λ) （1）
K(λ)=Φ(λ)/[V(λ)-V 0] （2）
Φ s (λ) are the spectral power of standard sources in formula, and ρ (λ) is the spectral reflectance of optical alignment mirror.V (λ) be
The output spectrum signal of the lower spectroscopic temperature measurement instrument of standard sources irradiation, V0 is the veiling glare signal for demarcating environment.
According to formula（1）、（2）, have：
K(λ)=Φs(λ)·ρ(λ)/[V(λ)-V 0] （3）
（3）Calibration
Standard sources is opened, spectroscopic temperature measurement instrument is placed on according to such as 1 in parallel light path, is directed at incident ray, and to light
Compose temperature measurer carry out top to bottom, left and right, front and rear adjusting, make light source as it is high-visible and full of spectral radiometer measurement visual field.
The iris of adjustment criteria light source makes the output signal of spectroscopic temperature measurement instrument in the best test scope of spectral radiometer.
Secondly, iris is closed, the veiling glare signal of environment is read by spectroscopic temperature measurement instrumentV 0, then iris is opened, by
Spectroscopic temperature measurement instrument reads the output signal V (λ) of standard sources.
Finally, according to formula（3）Calculate the spectral power receptance function K (λ) of spectroscopic temperature measurement instrument, and input spectrum temperature measurer
Calibration system.Complete radiation calibration.
（4）The test for the radiant power and blast temperature of exploding
After the spectral power receptance function calibration of spectroscopic temperature measurement instrument, then spectroscopic temperature measurement instrument is in some spectrum（1~λ of λ 2）Model
It encloses and is to the radiant power Φ t (λ) that explosive source exports：
Φt(λ)=∫λ2λ1K(λ)·[Vt(λ)-V 0t(λ)]·dλ （4）
Vt (λ) is the output spectrum signal that the test of spectroscopic temperature measurement instrument is tested explosive source in formula,V 0T is tested explosive source environment
Veiling glare signal.
By formula（3）Substitute into formula（4）The radiant power that can be obtained spectroscopic temperature measurement instrument is：
Φt(λ)=∫λ2λ1Φs(λ)·ρ(λ)·[Vt(λ)-V 0t(λ)]/[V(λ)-V 0]·dλ (5)
By formula（3）As long as it is found that carrying out absolute calibration to standard sources and optical alignment mirror, you can obtain spectroscopic temperature measurement
Instrument spectral power receptance function, according to formula after spectroscopic temperature measurement instrument spectral power receptance function is demarcated（5）, tested by testing
The veiling glare signal of the output spectrum signal of explosive source and tested explosive source environment can be obtained the radiant power of tested explosive source.
After explosive source radiant power determines, it can be obtained by the algorithm research to emissivity according to Planck law quick-fried
The blast temperature in fried source.
Claims (1)
1. one kind having telescope optical system radiation calibration method, it is characterised in that：Include the following steps：
1）Design the standard set-up with telescope optical system spectroscopic temperature measurement instrument
According to the test request with telescope optical system spectroscopic temperature measurement instrument, it is imaged on unlimited distance, therefore, there is light of looking in the distance
The standard set-up for learning system spectrum temperature measurer is generally made of standard sources module and optical alignment system,
Wherein standard sources module includes standard sources and its power supply system, spectral radiance monitoring unit, iris, is carried
For exporting continuously adjustable radiant power in the case where spatial distribution is constant, optical alignment system is by optical alignment mirror and its essence
Close mounting and adjusting pedestal composition, finally, the spectral power distribution of standard sources and the spectral reflectivity of optical alignment mirror are by meter
Amount department is calibrated；
2）Establish the mathematical model with telescope optical system radiation calibration；
It is theoretical according to optical imaging concept and spectral radiance detection it is found that the light of spectroscopic temperature measurement instrument is assigned in the irradiation in standard sources
Spectral power receptance function K (λ) is given by：
K(λ)=Φs(λ)·ρ(λ)/[V(λ)- V 0] formula（1）
In formula, Φ s (λ) are the spectral power of standard sources, and ρ (λ) is the spectral reflectance of optical alignment mirror, and V (λ) is in standard
The output spectrum signal of the lower spectroscopic temperature measurement instrument of light source irradiation,V 0To demarcate the veiling glare signal of environment, according to formula（1）, due to mark
The spectral power in quasi-optical source and the spectral reflectance of optical alignment mirror are demarcated via metrological service, as long as accurate test is in standard
The output spectrum signal of the lower spectroscopic temperature measurement instrument of light source irradiation andV 0The spectral power that the veiling glare signal of environment can be obtained instrument is rung
Answer function K (λ), unit W/V；
3）Calibration
Standard sources is opened, spectroscopic temperature measurement instrument is placed in parallel light path, is directed at incident ray, and carry out to spectroscopic temperature measurement instrument
Top to bottom, left and right, front and rear adjust, make light source as it is high-visible and full of spectral radiometer measurement visual field, adjustment criteria light source
Iris, make the output signal of spectroscopic temperature measurement instrument in the best test scope of spectral radiometer, secondly, closing can darkening
Column is read the veiling glare signal of environment by spectroscopic temperature measurement instrumentV 0, then iris is opened, standard sources is read by spectroscopic temperature measurement instrument
Output signal V (λ) finally calculates the spectral power receptance function K (λ) of spectroscopic temperature measurement instrument according to the mathematical model of foundation, and defeated
Enter spectroscopic temperature measurement instrument calibration system, that is, completes radiation calibration.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106643796B (en) * | 2016-12-02 | 2019-07-12 | 北京空间机电研究所 | A kind of Calibration Method based on in-orbit proper star |
| CN108680967B (en) * | 2018-04-03 | 2019-09-27 | 芜湖泰贺知信息系统有限公司 | A kind of robot scaling equipment and its Calibration Method for passive terahertz imaging instrument |
| CN110702274B (en) * | 2019-11-06 | 2021-01-26 | 中国计量科学研究院 | Space calibration method based on accurate miniature phase-change fixed point blackbody model |
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Patent Citations (8)
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