CN104181613A - Foundation infrared ceilometer on-site calibration method and device - Google Patents
Foundation infrared ceilometer on-site calibration method and device Download PDFInfo
- Publication number
- CN104181613A CN104181613A CN201410398868.1A CN201410398868A CN104181613A CN 104181613 A CN104181613 A CN 104181613A CN 201410398868 A CN201410398868 A CN 201410398868A CN 104181613 A CN104181613 A CN 104181613A
- Authority
- CN
- China
- Prior art keywords
- point source
- temperature
- source black
- black matrix
- point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Radiation Pyrometers (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses a foundation infrared ceilometer on-site calibration method. A portable point source black body is adopted, a two-dimensional fine position adjustment mechanism is additionally arranged, so that the two-dimensional position of the point source black body is fine adjusted; the point source black body has at least two temperature calibration points in the actual calibration process, and calibrated temperatures of the two temperature calibration points keep stable on two temperature points with the temperature difference of at least 30 DEG C. On each temperature point, a plurality of detection pixel points are evenly distributed in a radiation image obtained through an optical assembly of a foundation infrared ceilometer by adjusting the position of the point source black body; then the pixel points are calibrated in a two-point mode, a correction coefficient is obtained, then interpolating is carried out according to a stored original calibration coefficient matrix and latest correction coefficients of the detection pixel points and a full correction coefficient is obtained.
Description
Technical field
The invention belongs to atmospheric exploration field, be specifically related to a kind of ground infrared cloud detection instrument field calibration method and device.
Background technology
General large visual field this core devices of uncooled infrared focal plane array that adopts of ground infrared cloud detection instrument, so that obtain continuously round the clock the downward infrared radiation of atmosphere.But this device has that temperature is floated, time floats and the unfavorable feature such as heterogeneity.In order to ensure the Measurement accuracy of infrared radiation value, instrument generally needs to calibrate before dispatching from the factory.And can, at the inner internal calibration black matrix of installing of cloud metre, in the time of each measurement, need to aim at interior black matrix and take and deduct drift.The method of a kind of non-refrigeration focal surface infrared cloud detection of being announced as patent of invention CN100510781C.
Because ground infrared cloud detection instrument needs long-term lowered in field environment work, three servomechanism installations of a kind of optics cloud metre device that need to be as described in CN101089657B protect.But in practical work process, the external camera lens that infrared sensor installs additional and germanite glass screening glass can produce aging, thereby the infrared radiation of measuring is changed along with the increase of time.This variation is difficult to control at present, and still there is no the method for on-site proving to ensure the accuracy of measuring radiation.Can only change external camera lens and germanite glass screening glass by a period of time, and cloud metre be gone back to factory again and calibrate rear use.
Summary of the invention
The object of the invention is: after working in the wild for a long time for current ground infrared cloud detection instrument; a uncontrollable measurement accuracy decline difficult problem for the aging generation of external camera lens and germanite glass screening glass; a kind of field calibration method and mechanism are proposed, so that regularly ground infrared cloud detection instrument is carried out to on-site proving.
Technical scheme of the present invention is: ground infrared cloud detection instrument field calibration method, adopt portable point source black matrix, and by installing two-dimentional fine location governor motion additional, make point source black matrix carry out the meticulous adjusting of two-dimensional position; Point source black matrix at least has two scales of thermometer fixed point in actual calibration process, and the temperature that two scale of thermometer fixed points are demarcated must be stabilized on two temperature spots that the temperature difference at least differs 30 DEG C.On each temperature spot, by regulating the position of point source black matrix, in the radiation image that the lighting apparatus component of ground infrared cloud detection instrument is obtained, be evenly distributed with some detection pixels; Then adopt two-point method to demarcate these pixels, obtain correction factor, and according to the original calibration coefficient matrix of having stored with detect pixel up-to-date correction factor and carry out interpolation and obtain whole audience correction factor.
Temperature-controlled precision ± 0.1 DEG C of portable point source black matrix, effective emissivity is greater than 0.95, and operating temperature range is at-20 DEG C～50 DEG C.It is positioned on horizontal and vertical guide rail, and passes through stent support; When work, the vertical plane of in-situ calibration device is parallel with the ground infrared cloud detection instrument lighting apparatus component of being demarcated.
Collection and control module are carried out flow process according to the input of computing machine: point source black matrix is stabilized in a scale of thermometer fixed point by (1); (2) control position governor motion, is evenly distributed with some detection pixels in the radiation image that the lighting apparatus component of ground infrared cloud detection instrument is obtained simultaneously, and records displacement; (3) enter second scale of thermometer fixed point, obtain the some detection pixels under this temperature spot by the displacement of having recorded;
Data processing module workflow: (1) adopts two-point method to demarcate these pixel detection points, obtains correction factor; (2) carry out interpolation according to the original calibration coefficient matrix of having stored with the up-to-date correction factor of detection pixel and obtain whole audience correction factor.
Ground infrared cloud detection instrument in-situ calibration device, this device adopts portable point source black matrix, portable point source black matrix is contained in two-dimentional fine location governor motion, on each temperature spot, by regulating the position of point source black matrix, in the radiation image that ground infrared cloud detection instrument lighting apparatus component is obtained, be evenly distributed with some detection pixels.Fine location governor motion can be that horizontal and vertical guide rail is controlled by acquisition control module, and point source black body locus controls to centimetre-sized; The horizontal and vertical displacement of guide rail is all not less than 20cm;
Two dimension fine location governor motion comprises guide rail and supporting mechanism; Be provided with collection and control module, data processing module composition; Collection and control module comprise that guide rail position regulates submodule, point source blackbody temperature to regulate submodule, data acquisition submodule; Data processing module is mainly used in obtaining calibration coefficient by data analysis.
The invention has the beneficial effects as follows: a kind of ground infrared cloud detection instrument field calibration method proposed by the invention and mechanism; realize the convenient and swift infrared cloud detection of base ground-to-ground instrument and carried out regular on-site proving; overcome to a great extent the uncontrollable measurement accuracy decline difficult problem due to the aging generation of external camera lens and germanite glass screening glass, to ensureing that the stability that ground infrared cloud detection instrument long term data obtains provides effective way.
Brief description of the drawings
Fig. 1 is ground infrared cloud detection instrument in-situ calibration device schematic block diagram;
Fig. 2 is the process flow diagram of ground infrared cloud detection instrument field calibration method.
Embodiment
Ground infrared cloud detection instrument in-situ calibration device comprises the compositions such as portable point source black matrix, guide rail and supporting mechanism, collection and control module, data processing module.Wherein temperature-controlled precision ± 0.1 DEG C of portable point source black matrix, effective emissivity is greater than 0.95, and operating temperature range is at-20 DEG C～50 DEG C.It is positioned on horizontal and vertical guide rail, and passes through stent support.Guide rail can reliably be controlled by control module, and displacement controls to centimetre-sized.Horizontal and vertical displacement is all not less than 20cm.Collection and control module comprise that guide rail position regulates submodule, point source blackbody temperature to regulate submodule, data acquisition submodule etc.Data processing module is mainly used in obtaining calibration coefficient by data analysis.
When work, the vertical plane of in-situ calibration device is parallel with the ground infrared cloud detection instrument lighting apparatus component of being demarcated.
Collection and control module start following flow process according to the input of computing machine:
(1) point source black matrix is stabilized in to a temperature spot;
(2) control position governor motion, is evenly distributed with some detection pixels in the radiation image that ground infrared cloud detection instrument lighting apparatus component is obtained, and records displacement;
(3) enter second temperature spot, obtain the some detection pixels under this temperature spot by the displacement of having recorded.
Then, data processing module starts following work:
(1) adopt two-point method to demarcate these pixel detection pixels, obtain correction factor; Specifically, be exactly according to calibration model y=kx+b, wherein y is radiation value, the AD value that x is cloud metre.By the data substitution calibration model of two temperature spots, can try to achieve calibration coefficient k and b.
(2) (be calibration coefficient k and b) carry out interpolation and obtain whole audience correction factor according to the original calibration coefficient matrix stored and the up-to-date correction factor of check point.
Point source black matrix is conventional point-source blackbody radiation source, in blackbody radiation source housing, support the outstanding blackbody radiator that is equipped with near radiation port one side, blackbody radiator is provided with electric heater unit and temperature sensor, between blackbody radiator surrounding and shell inner surface, form the gap that makes Air Flow, in radiation source housing away from the space between opposite side blackbody radiator and the housing end wall of radiation port, temperature control circuit board and temperature controller are installed, radiator fan and gauge tap and fan swicth are installed on the end wall of this respective side.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. ground infrared cloud detection instrument field calibration method, is characterized in that adopting portable point source black matrix, by installing two-dimentional fine location governor motion additional, makes point source black matrix carry out the meticulous adjusting of two-dimensional position; Point source black matrix at least has two scales of thermometer fixed point in actual calibration process, and the temperature that two scale of thermometer fixed points are demarcated must be stabilized on two temperature spots that the temperature difference at least differs 30 DEG C.On each temperature spot, by regulating the position of point source black matrix, in the radiation image that the lighting apparatus component of ground infrared cloud detection instrument is obtained, be evenly distributed with some detection pixels; Then adopt two-point method to demarcate these points, obtain correction factor, and according to the original calibration coefficient matrix of having stored with detect pixel up-to-date correction factor and carry out interpolation and obtain whole audience correction factor.
2. ground infrared cloud detection instrument field calibration method according to claim 1, is characterized in that temperature-controlled precision ± 0.1 DEG C of portable point source black matrix, and effective emissivity is greater than 0.95, and operating temperature range is at-20 DEG C～50 DEG C; It is positioned on horizontal and vertical guide rail, and passes through stent support; When work, the vertical plane of in-situ calibration device is parallel with the ground infrared cloud detection instrument lighting apparatus component of being demarcated.
3. ground infrared cloud detection instrument field calibration method according to claim 1, is characterized in that flow process is as follows: point source black matrix is stabilized in a scale of thermometer fixed point by (1); (2) control position governor motion, is evenly distributed with some detection pixels in the radiation image that the lighting apparatus component of ground infrared cloud detection instrument is obtained simultaneously, and records displacement; (3) enter second scale of thermometer fixed point, obtain the some detection pixels under this temperature spot by the displacement of having recorded; Data processing module workflow: (1) adopts two-point method to demarcate these pixel detection points, obtains correction factor; (2) the original calibration coefficient matrix that basis has been stored and the up-to-date correction factor of check point carry out interpolation and obtain whole audience correction factor.
4. ground infrared cloud detection instrument in-situ calibration device, it is characterized in that device adopts portable point source black matrix, portable point source black matrix is contained in two-dimentional fine location governor motion, on each temperature spot, by regulating the position of point source black matrix, in the radiation image that ground infrared cloud detection instrument lighting apparatus component is obtained, be evenly distributed with some check points; Two dimension fine location governor motion can be that horizontal and vertical guide rail is controlled by acquisition control module, and point source black body locus controls to centimetre-sized; The horizontal and vertical displacement of guide rail is all not less than 20cm; Two dimension fine location governor motion comprises guide rail and supporting mechanism; Be provided with collection and control module, data processing module composition; Collection and control module comprise that guide rail position regulates submodule, point source blackbody temperature to regulate submodule, data acquisition submodule; Data processing module is mainly used in obtaining calibration coefficient by data analysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410398868.1A CN104181613B (en) | 2014-08-13 | 2014-08-13 | Foundation infrared ceilometer on-site calibration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410398868.1A CN104181613B (en) | 2014-08-13 | 2014-08-13 | Foundation infrared ceilometer on-site calibration method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104181613A true CN104181613A (en) | 2014-12-03 |
| CN104181613B CN104181613B (en) | 2017-02-15 |
Family
ID=51962800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410398868.1A Active CN104181613B (en) | 2014-08-13 | 2014-08-13 | Foundation infrared ceilometer on-site calibration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104181613B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212986A (en) * | 2020-08-26 | 2021-01-12 | 武汉高德智感科技有限公司 | Infrared module data acquisition equipment and acquisition method |
| CN114397326A (en) * | 2022-01-13 | 2022-04-26 | 北京星航机电装备有限公司 | Stability evaluation system of infrared coating |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004309309A (en) * | 2003-04-07 | 2004-11-04 | Meteorological Agency | Cloud cover determining device |
| CN1811360A (en) * | 2006-02-24 | 2006-08-02 | 昆明物理研究所 | Adaptive non-uniform correcting method for stare infrared focal plane detector |
| EP2172790A2 (en) * | 2008-10-01 | 2010-04-07 | Leibniz-Institut für Oberflächenmodifizierung e.V. | Optical device with a transmitter and a receiver |
| CN102042878A (en) * | 2010-10-21 | 2011-05-04 | 电子科技大学 | Infared nonuniformity correction method for removing temperature shift |
| CN103076156A (en) * | 2013-01-08 | 2013-05-01 | 江苏涛源电子科技有限公司 | Multi-criteria blind pixel detection method of infrared focal planar array |
| CN103308178A (en) * | 2013-06-04 | 2013-09-18 | 电子科技大学 | Non-uniformity correction method for non-refrigeration infrared focal plane array |
| CN103424192A (en) * | 2013-07-16 | 2013-12-04 | 电子科技大学 | Method of temperature drift compensation for infrared thermometers |
| CN103873856A (en) * | 2014-02-27 | 2014-06-18 | 北京空间机电研究所 | Self-reflection calibration method for space remote sensor on orbit infrared focal plane |
-
2014
- 2014-08-13 CN CN201410398868.1A patent/CN104181613B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004309309A (en) * | 2003-04-07 | 2004-11-04 | Meteorological Agency | Cloud cover determining device |
| CN1811360A (en) * | 2006-02-24 | 2006-08-02 | 昆明物理研究所 | Adaptive non-uniform correcting method for stare infrared focal plane detector |
| EP2172790A2 (en) * | 2008-10-01 | 2010-04-07 | Leibniz-Institut für Oberflächenmodifizierung e.V. | Optical device with a transmitter and a receiver |
| CN102042878A (en) * | 2010-10-21 | 2011-05-04 | 电子科技大学 | Infared nonuniformity correction method for removing temperature shift |
| CN103076156A (en) * | 2013-01-08 | 2013-05-01 | 江苏涛源电子科技有限公司 | Multi-criteria blind pixel detection method of infrared focal planar array |
| CN103308178A (en) * | 2013-06-04 | 2013-09-18 | 电子科技大学 | Non-uniformity correction method for non-refrigeration infrared focal plane array |
| CN103424192A (en) * | 2013-07-16 | 2013-12-04 | 电子科技大学 | Method of temperature drift compensation for infrared thermometers |
| CN103873856A (en) * | 2014-02-27 | 2014-06-18 | 北京空间机电研究所 | Self-reflection calibration method for space remote sensor on orbit infrared focal plane |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212986A (en) * | 2020-08-26 | 2021-01-12 | 武汉高德智感科技有限公司 | Infrared module data acquisition equipment and acquisition method |
| CN114397326A (en) * | 2022-01-13 | 2022-04-26 | 北京星航机电装备有限公司 | Stability evaluation system of infrared coating |
| CN114397326B (en) * | 2022-01-13 | 2023-11-14 | 北京星航机电装备有限公司 | Stability evaluation system of infrared coating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104181613B (en) | 2017-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104567690B (en) | A kind of laser beam field calibration method and device | |
| CN101770145B (en) | Method for estimating actual size of object and real object projector | |
| CN103278934B (en) | Focal plane butt joint device and method for satellite-borne optical remote sensor | |
| CN103837093A (en) | Calibration system and method for spectrum confocal sensor | |
| CN106770062B (en) | Atmospheric transmittance measuring and calibrating method | |
| CN102564458A (en) | Low-frequency error measuring method for star sensor | |
| CN205300605U (en) | Laser swinger NULL device | |
| WO2022104816A1 (en) | Temperature compensation method and system for thermal camera | |
| CN105486289A (en) | Laser photography measuring system and camera calibration method | |
| CN111457942B (en) | Plane height-fixing calibration device | |
| CN104316082B (en) | A kind of theodolite outfield infinity range correction method | |
| CN110501026A (en) | Camera internal position element caliberating device and method based on array asterism | |
| CN107907561A (en) | The device and measuring method of multipath reflection laser optical lever metal linear expansion coefficient measurement | |
| CN104181613A (en) | Foundation infrared ceilometer on-site calibration method and device | |
| CN110044279A (en) | A kind of sealing ring measurer for thickness and method | |
| CN202939142U (en) | Device for measuring linear expansion coefficients of metals | |
| CN106596256A (en) | Apparatus suitable for measuring bending rigidity, elasticity modulus, shear modulus and bulk modulus | |
| CN203249631U (en) | Indium steel leveling staff calibrating device | |
| US20180373013A1 (en) | Observation device and control method for observation device | |
| JP6769838B2 (en) | Gain normalization | |
| CN205027306U (en) | Automatic image measurement system | |
| CN203100746U (en) | Camera model calibration device | |
| CN105043724B (en) | Large area extends radiation calibration light source homogeneity test device | |
| JP2016180751A (en) | Shape measuring device and processing device | |
| CN115755230A (en) | Raindrop spectrometer based on particle image velocimetry technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |