CN108181002A - Infrared target simulator target angle caliberating device and method based on thermal imaging system - Google Patents
Infrared target simulator target angle caliberating device and method based on thermal imaging system Download PDFInfo
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- CN108181002A CN108181002A CN201810189253.6A CN201810189253A CN108181002A CN 108181002 A CN108181002 A CN 108181002A CN 201810189253 A CN201810189253 A CN 201810189253A CN 108181002 A CN108181002 A CN 108181002A
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- 238000001931 thermography Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000005457 Black-body radiation Effects 0.000 claims abstract description 33
- 230000003287 optical effect Effects 0.000 claims abstract description 31
- 238000012360 testing method Methods 0.000 claims abstract description 18
- 230000005855 radiation Effects 0.000 claims abstract description 10
- 230000002459 sustained effect Effects 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims description 12
- 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 6
- 230000003595 spectral effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
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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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/07—Arrangements for adjusting the solid angle of collected radiation, e.g. adjusting or orienting field of view, tracking position or encoding angular position
-
- 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
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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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
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- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
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Abstract
Infrared target simulator target angle caliberating device and method based on thermal imaging system, belong to infrared target simulator detection technology field, test and assessment for infrared detector performance provide controllable precise, repeatable experimental condition, including blackbody radiation source, infrared target simulator to be calibrated, high-precision adjustment mechanism, thermal infrared imager, two-dimension high-precision turntable and Test bench；Blackbody radiation source is located on Test bench；Infrared star simulator to be calibrated is located at after blackbody radiation source, is fixed in high-precision adjustment mechanism, and identical with black body radiation source height；Thermal infrared imager is located at after infrared star simulator to be calibrated, on two-dimension high-precision turntable, and with the optical axis of infrared star simulator to be calibrated in sustained height；The infra-red radiation that blackbody radiation source is sent out forms parallel light emergence after infrared star simulator to be calibrated, generates the target of infrared band, and light again measures target point caused by infrared star simulator to be calibrated by thermal infrared imager.
Description
Technical field
The present invention relates to infrared target simulator target angle caliberating devices and method based on thermal imaging system, belong to infrared mesh
Mark simulator detection technology field.
Background technology
With the continuous development of infrared detection technique, the research of infrared target simulator is also being developed therewith, infrared mesh
Simulator is marked as test equipment important in optic test quasi-instrument, the infrared thermal imagery of real goal can be simulated, be infrared
The test and assessment of detecting devices performance provide controllable precise, repeatable experimental condition, in the development rank of infrared detector
Section tests its properties and index comprehensively, and the calibration of infrared target simulator target angle can be ensured to detect target
The accuracy of position, thus the calibration of the target angle of infrared target simulator plays infrared detector development work to
Close important role.
Invention content
The purpose of the present invention is the test for infrared detector performance and assessment provide controllable precise, repeatable experiment
Condition provides a kind of infrared target simulator target angle caliberating device and method based on thermal imaging system.
Technical scheme is as follows：
Infrared target simulator target angle caliberating device based on thermal imaging system, it is characterized in that, including：Black body radiation
Source, infrared target simulator to be calibrated, high-precision adjustment mechanism, thermal infrared imager, two-dimension high-precision turntable and Test bench；It is black
Body radiation source is located on Test bench；Infrared star simulator to be calibrated is located at after blackbody radiation source, is fixed on high-precision and adjusts
In mechanism, and it is identical with black body radiation source height；Thermal infrared imager is located at after infrared star simulator to be calibrated, mounted on two dimension
In high precision turntable, and with the optical axis of infrared star simulator to be calibrated in sustained height；The infra-red radiation that blackbody radiation source is sent out
Parallel light emergence is formed after infrared star simulator to be calibrated, and generates the target of infrared band, light passes through infrared heat again
As instrument measures target point caused by infrared star simulator to be calibrated.
Infrared star simulator to be calibrated includes：Optical filter, infrared graticle and infrared collimating optical system；It is optical filter, red
Outer graticle and the coaxial arrangement of infrared collimating optical system, needed for the infra-red radiation that blackbody radiation source is sent out generates after optical filter
Infrared spectral coverage light, light after infrared graticle again via infrared collimating optical system is projected, finally by infrared collimation
The infrared target of infinity is formed after optical system.
Infrared target simulator target angle scaling method based on thermal imaging system, it is characterized in that, this method includes following step
Suddenly：
Step 1 installs device to be calibrated；
Blackbody radiation source is mounted on Test bench first；Then infrared target simulator to be calibrated is fixed on high-precision
It spends on adjustment mechanism, and high-precision adjustment mechanism is fixed on and is measured on pedestal, adjustment high-precision adjustment mechanism makes to be calibrated red
Outer target simulator is maintained at identical height with blackbody radiation source center；
Step 2, infrared target simulator to be calibrated are aligned with infrared electro theodolite；
Thermal infrared imager is positioned on two-dimension high-precision turntable, then two-dimension high-precision turntable is fixed on measurement pedestal
On, then adjusting turntable highly makes thermal infrared imager with infrared target simulator to be calibrated in identical height；Adjustment two dimension is high-precision
The orientation and pitch angle of turntable are spent, makes the central point of thermal infrared imager alignment target pattern, two-dimension high-precision turns record at this time
Benchmark of the reading of platform as follow-up measurement；
Step 3, the measurement and calibration of target simulator target angle；
Adjustment two-dimension high-precision turntable makes each target point of the thermal infrared imager one by one on alignment target pattern, and records each
The azimuth of target point and the registration of pitch angle；Target point angle parameter list is drawn, and is calculated according to formula one and formula two
Go out the angular deviation of each target point calibration, complete the target angle calibration of infrared target simulator；
Y'/f'=tan ω (one)
Δ ω=ω '-ω (two)
Wherein, image heights of the y' for infrared target simulator to be calibrated, focal lengths of the f' for infrared target simulator to be calibrated, ω
For the angle of theory target point, ω ' is actual angle measurement degree, and Δ ω is the angular deviation of target point.
Beneficial effects of the present invention：
1st, the present invention is directed at the target point of infrared target simulator using thermal imaging system.
2nd, the present invention exports azimuth and the pitch angle of each target point using two-dimension high-precision turntable.
3rd, the present invention measures infrared target simulator institute shape using the method that thermal infrared imager is combined with high precision turntable
Into the azimuth of target point and pitch angle.
4th, equipment therefor of the present invention is simple in structure, easily carries out to locating tab assembly.
Description of the drawings
Fig. 1 is the structure diagram of the infrared target simulator target angle caliberating device the present invention is based on thermal imaging system.
Fig. 2 is infrared target simulator structure diagram to be calibrated of the present invention.
In figure：1st, blackbody radiation source；2nd, infrared target simulator to be calibrated；3rd, high-precision adjustment mechanism；4th, infrared thermal imagery
Instrument；5th, two-dimension high-precision turntable；6th, Test bench；2-1, optical filter；2-2, infrared graticle；2-3, infrared collimating optics system
System；2-4, image planes.
Specific embodiment
As shown in Figure 1, the infrared target simulator target angle caliberating device based on thermal imaging system includes：Blackbody radiation source 1,
Infrared target simulator 2 to be calibrated, high-precision adjustment mechanism 3, thermal infrared imager 4, two-dimension high-precision turntable 5 and Test bench 6.
Blackbody radiation source 1 is located on Test bench 6；Infrared star simulation system 2 to be calibrated is located at after blackbody radiation source 1, is fixed on
In high-precision adjustment mechanism 3, and it is identical with 1 height of blackbody radiation source；Thermal infrared imager 4 is located at infrared star simulator 2 to be calibrated
Later, on two-dimension high-precision turntable 5, and with the optical axis of infrared star simulator 2 to be calibrated in sustained height.Black body radiation
The infra-red radiation that source 1 is sent out forms parallel light emergence after infrared star simulator 2 to be calibrated, and generates the mesh of infrared band
Mark, light again measure target point caused by infrared star simulator 2 to be calibrated by thermal infrared imager 4.
Blackbody radiation source 1, the infra-red radiation that black matrix sends out certain temperature provide stable infra-red radiation for whole device.
The effect of thermal infrared imager 4 is in alignment with each target point of target simulator target pattern.
It is for measuring infrared target simulator to be calibrated that thermal infrared imager 4, which is arranged on two-dimension high-precision turntable 5,
The azimuth of each target point and pitch angle.
Two-dimension high-precision turntable 5 is made of orientation adjustment mechanism and aligning elevation gear, and effect is each target point of output
Azimuth and pitch angle.
As shown in Fig. 2, infrared star simulator 2 to be calibrated includes：Optical filter 2-1, infrared graticle 2-2 and infrared collimated light
System 2-3.Optical filter 2-1, infrared graticle 2-2 and infrared collimating optical system 2-3 coaxial arrangements, blackbody radiation source 1 are sent out
The infra-red radiation gone out generates infrared spectral coverage light after optical filter 2-1, and light is infrared via being projected after infrared graticle 2-2 again
Collimating optical system 2-3, finally by the infrared target that infinity is formed after infrared collimating optical system 2-3.It is to be calibrated infrared
Target simulator 2 provides infrared target pattern to be measured.
The effect of optical filter 2-1 is to correct the spectrum of light source, makes the spectrum of target simulator output spectrum and required measurement
Matching.
Target pattern on infrared graticle 2-2 is made of the point arranged according to certain rules.
It is blocked, is prevented red using metal baffle between optical filter 2-1 and infrared graticle 2-2 and blackbody radiation source 1
Outer graticle 2-2 crosses the contrast of heat affecting target and the clarity at edge.
Infrared collimating optical system 2-3 is used to carry out collimating effect to infrared spectral coverage light.
The infra-red radiation that blackbody radiation source 1 is sent out output spectrum and infrared collimating optical system 2-3 after optical filter 2-1
Spectral matching, then form the infrared target pattern to be simulated via infrared graticle 2-2, what infrared graticle 2-2 was emitted
Light is emitted directional light through infrared collimating optical system 2-3, and the infrared target of required infinity is finally formed at image planes 2-4
Pattern is measured and is demarcated to infrared target pattern caused by target simulator finally by adjustment thermal infrared imager 4.
Infrared target simulator target angle scaling method based on thermal imaging system, this method include the following steps：
Step 1 installs device to be calibrated.Blackbody radiation source 1 is mounted on Test bench 6 first；It then will be to be calibrated
Infrared target simulator 2 is fixed in high-precision adjustment mechanism 3, and high-precision adjustment mechanism 3 is fixed on and is measured on pedestal 6,
Adjustment high-precision adjustment mechanism 3 makes infrared target simulator 2 to be calibrated be maintained at identical height with 1 center of blackbody radiation source；
Step 2, infrared target simulator 2 to be calibrated are aligned with infrared electro theodolite 5.Thermal infrared imager 4 is put
It is placed on two-dimension high-precision turntable 5, then two-dimension high-precision turntable 5 is fixed on and is measured on pedestal 6, then adjust turntable height 5
Make thermal infrared imager 4 with infrared target simulator 2 to be calibrated in identical height；Two-dimension high-precision turntable 5 is by orientation and pitching tune
Complete machine structure forms, and the orientation and pitch angle of adjustment two-dimension high-precision turntable 5 make in 4 alignment target pattern of thermal infrared imager
Heart point records benchmark of the reading of two-dimension high-precision turntable at this time as follow-up measurement；
Step 3, the measurement and calibration of target simulator target angle.Adjustment two-dimension high-precision turntable 5 makes thermal infrared imager
4 each target points on alignment target pattern, and record the azimuth of each target point and the registration of pitch angle one by one；Draw target
Angle parameter list is put, and the angular deviation of each target point calibration is calculated according to formula (1) and formula (2), completes infrared mesh
Mark the target angle calibration of simulator.
Y'/f'=tan ω (1)
Δ ω=ω '-ω (2)
Wherein, y' be infrared target simulator 2 to be calibrated image height, f' be 2 focal length of infrared target simulator to be calibrated, ω
For the angle of theory target point, ω ' is actual angle measurement degree, and Δ ω is the angular deviation of target point.
Claims (3)
1. the infrared target simulator target angle caliberating device based on thermal imaging system, it is characterized in that, including：Blackbody radiation source
(1), infrared target simulator (2) to be calibrated, high-precision adjustment mechanism (3), thermal infrared imager (4), two-dimension high-precision turntable (5)
With Test bench (6)；
Blackbody radiation source (1) is on Test bench (6)；
Infrared star simulator (2) to be calibrated is fixed on after blackbody radiation source (1) in high-precision adjustment mechanism (3), and with
Blackbody radiation source (1) height is identical；
Thermal infrared imager (4) is after infrared star simulator (2) to be calibrated, on two-dimension high-precision turntable (5), and with
The optical axis of infrared star simulator (2) to be calibrated is in sustained height；
The infra-red radiation that blackbody radiation source (1) is sent out forms parallel light emergence after infrared star simulator (2) to be calibrated, and produces
The target of raw infrared band, light is again by thermal infrared imager (4) to target point caused by infrared star simulator (2) to be calibrated
It measures.
2. the infrared target simulator target angle caliberating device according to claim 1 based on thermal imaging system, feature exist
In infrared star simulator (2) to be calibrated includes：Optical filter (2-1), infrared graticle (2-2) and infrared collimating optical system (2-
3)；Optical filter (2-1), infrared graticle (2-2) and infrared collimating optical system (2-3) coaxial arrangement, blackbody radiation source (1) hair
The infra-red radiation gone out generates required infrared spectral coverage light after optical filter (2-1), light again via infrared graticle (2-2) after
Infrared collimating optical system (2-3) is projected, forms the infrared mesh of infinity afterwards finally by infrared collimating optical system (2-3)
Mark.
3. the infrared target simulator target angle scaling method based on thermal imaging system, it is characterized in that, this method includes the following steps：
Step 1 installs device to be calibrated；
First by blackbody radiation source (1) on Test bench (6)；Then it is infrared target simulator to be calibrated (2) is fixed
In in high-precision adjustment mechanism (3), and high-precision adjustment mechanism (3) is fixed on and is measured on pedestal (6), adjustment high-precision adjusts
Mechanism (3) makes infrared target simulator to be calibrated (2) be maintained at identical height with blackbody radiation source (1) center；
Step 2, infrared target simulator (2) to be calibrated are aligned with infrared electro theodolite (5)；
Thermal infrared imager (4) is positioned on two-dimension high-precision turntable (5), then two-dimension high-precision turntable (5) is fixed on measurement
On pedestal (6), then adjusting turntable height (5) makes thermal infrared imager (4) with infrared target simulator to be calibrated (2) in identical height
Degree；The orientation and pitch angle of two-dimension high-precision turntable (5) are adjusted, makes the central point of thermal infrared imager (4) alignment target pattern,
Record benchmark of the reading of two-dimension high-precision turntable at this time as follow-up measurement；
Step 3, the measurement and calibration of target simulator target angle；
Adjustment two-dimension high-precision turntable (5) makes each target point of the thermal infrared imager (4) one by one on alignment target pattern, and records every
The azimuth of a target point and the registration of pitch angle；Target point angle parameter list is drawn, and is counted according to formula one and formula two
The angular deviation of each target point calibration is calculated, completes the target angle calibration of infrared target simulator；
Y'/f'=tan ω (one)
Δ ω=ω '-ω (two)
Wherein, y' is the image height of infrared target simulator to be calibrated, and f' is the focal length of infrared target simulator to be calibrated, and ω is reason
By the angle of target point, ω ' is actual angle measurement degree, and Δ ω is the angular deviation of target point.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928946A (en) * | 2020-07-15 | 2020-11-13 | 云从科技集团股份有限公司 | Infrared temperature measuring device and standard alignment method, system, machine readable medium and equipment |
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| CN103292981A (en) * | 2013-05-22 | 2013-09-11 | 中国科学院上海光学精密机械研究所 | Measuring device and calibration method for optical lens distortion |
| CN104290931A (en) * | 2014-09-17 | 2015-01-21 | 长春理工大学 | Ultraviolet fixed star and earth simulator |
| CN205246220U (en) * | 2015-12-21 | 2016-05-18 | 中国船舶重工集团公司第七二六研究所 | Platform device towards infrared imaging system capability test |
-
2018
- 2018-03-08 CN CN201810189253.6A patent/CN108181002A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292981A (en) * | 2013-05-22 | 2013-09-11 | 中国科学院上海光学精密机械研究所 | Measuring device and calibration method for optical lens distortion |
| CN104290931A (en) * | 2014-09-17 | 2015-01-21 | 长春理工大学 | Ultraviolet fixed star and earth simulator |
| CN205246220U (en) * | 2015-12-21 | 2016-05-18 | 中国船舶重工集团公司第七二六研究所 | Platform device towards infrared imaging system capability test |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928946A (en) * | 2020-07-15 | 2020-11-13 | 云从科技集团股份有限公司 | Infrared temperature measuring device and standard alignment method, system, machine readable medium and equipment |
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