CN203881444U - Natural terrain infrared emissivity spectral data field measuring system - Google Patents
Natural terrain infrared emissivity spectral data field measuring system Download PDFInfo
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- CN203881444U CN203881444U CN201420119500.2U CN201420119500U CN203881444U CN 203881444 U CN203881444 U CN 203881444U CN 201420119500 U CN201420119500 U CN 201420119500U CN 203881444 U CN203881444 U CN 203881444U
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Abstract
The utility model provides a natural terrain infrared emissivity spectral data field measuring system. The measuring system can utilize a Fourier infrared spectrometer in the field to alternatively measure an infrared reference board and a ground object to accomplish calculation of natural terrain infrared emissivity spectral data. The measuring system comprises the Fourier infrared spectrometer (1), an infrared standard board (2), a black body (3), a contact type thermometer (4), a GPS (5), a spectrometer support (6) and a computer (7). Through system matching of the natural terrain infrared emissivity spectral data field measuring system, the natural terrain infrared emissivity spectral data can be effectively measured in the field.
Description
Technical field
The utility model relates to emissivity measurement technical field, particularly a kind of infrared emittance spectroscopic data field measurement system of natural terrain.
Background technology
Earth's surface emissivity is to describe the basic parameter of earth's surface infrared signature, in the fields such as Aero-Space, science and techniques of defence and industrial and agricultural production, has important value.In the last few years, no matter be indoor or field, people explore the whole bag of tricks in effort and measure earth's surface emissivity.But the emissivity data of laboratory measurement often can not meet the demand of actual remote sensing application, because emissivity not only depends on the constituent of earth's surface object, and with surface state (surfaceness etc.) and the physical property (specific inductive capacity of object, water cut, temperature etc.) relevant, and along with the variation of the condition such as wavelength (λ), observation angle (θ) of measured radiation energy and change.Therefore the earth's surface infrared emittance that, is applicable to remote sensing application mainly relies on field measurement.Existing emissivity field survey technology, such as Chinese invention patent CN1464297 and CN2545599 provide a kind of method and portable emissivity analyzer that utilizes V-shape enclosed cavity to carry out emissivity field survey, utilize infrared thermometer to measure broadband emissivity; Chinese invention patent CN101458123 has invented a kind of surveying instrument and the method for emissivity Two dimensional Distribution and yardstick conversion thereof, can utilize thermal imaging system to carry out emissivity measurement in the wild; Chinese invention patent CN102879104 has invented a kind of three portable emissivity measurement instrument in source and methods, utilizes infrared radiometer to complete the measurement of emissivity.
Above-mentioned emissivity field survey method and instrument are all the measurements that completes emissivity based on channel-type infrared radiometer or thermal imaging system, this quasi-instrument all only arranges one or several passage at infrared band, therefore, cannot obtain the infrared emittance spectroscopic data of natural terrain; And be all directly using the vault of heaven as cold emission source, each measurement all can only be introduced surveying instrument by descending the sky of one or several angle radiation, cannot obtain accurately the descending radiation of sky in whole half spherical space, certainly will impact emissivity measurement result.
Utility model content
For the demand of reform of nature earth's surface field measurement infrared emittance spectroscopic data, under the calm cloudless condition of near surface, the utility model proposes a kind of natural terrain infrared emittance spectroscopic data field measurement system.This measuring system can utilize Fourier infrared spectrograph to pass through the alternately measurement to infrared reference plate and terrain object in the wild, completes the calculating to natural terrain infrared emittance spectroscopic data.
The utility model adopts following technical scheme:
An infrared emittance spectroscopic data field measurement system for natural terrain, is made up of Fourier infrared spectrograph (1), infrared standard plate (2), black matrix (3), contact tehermometer (4), GPS (5), spectrometer support (6) and computing machine (7).Select target area to be measured (8), read the latitude and longitude information of regional center to be measured by GPS positioning equipment; By spectrometer support by spectrometer frame in observation area top, measure district to be measured surface temperature with contact tehermometer, near this temperature spot, select 5 temperature controlling points to carry out temperature control to black matrix, and use the black matrix of temperature control to carry out on-site proving to spectrometer; Meanwhile, infrared standard plate is placed in to physical environment, makes itself and surrounding environment carry out sufficient heat interchange; Utilize calibrated spectrometer to measure successively infrared standard plate and target area, between twice measurement, measure infrared standard plate surface temperature with contact tehermometer; And record the actual conditions in sky condition in measuring process, meteorological condition and region to be measured.
The infrared spectrometer that the utility model uses is the MR154 FFIR radiation gauge that Canadian BOMEM instrument company produces, and its optical system is a Michelson interferometer.MR154 is infrared, and Fourier transform spectral radiometer is equipped with: a middle Long Wave Infrared Probe (TeCdHg mercury cadmium telluride) (2～20 μ m, 500～5000cm
-1), a short-wave infrared detector (InSb indium antimonide) (1.1～5.5 μ m, 1818～9090cm
-1) and a near infrared detector (Si silicon) (0.7～1.17 μ m, 8547～14285cm
-1).The spectral resolution of MR154 is 1,2,4,8 or 16cm
-1.In the utility model, use TeCdHg mercury-cadmium tellurid detector, 1cm
-1spectral resolution.In addition, MR154 has been equipped with a portable black matrix M340 (production of Mikron company of the U.S.) specially, as infrared spectrometer radiation calibration.Arrange by the black matrix temperature control for region to be measured surface temperature, spectrometer is carried out to Accurate Calibration, can obtain the continuous spectrum spoke brightness data in LONG WAVE INFRARED spectral range in target area and infrared reference plate.
The infrared standard plate that the utility model uses is to be produced by Labsphere company, and it is on the base plate of aluminum, to plate diffusion gold thin film.Infrared standard plate has 92%～96% reflectivity in middle long wave infrared region.Reflectivity at the every 50nm of 2.5～15.0 mu m waveband interval has all carried out accurate measurement, can trace back to the standard of American National Standards Institute.In the scope of zenith angle 0～45 degree, provide the directivity characteristics of its reflectance varies every 5 degree, as shown in Figure 1.This infrared standard plate has very high reflectivity in the wavelength band of 2.5～15 μ m, and the good lambert's property of whole plate mask.During due to field survey, weather condition is not to stablize constantly, is vital so measure timely and accurately the descending radiation of sky; And the descending radiation of sky is anisotropic under field conditions (factors).Utilize the reflection of infrared standard plate to carry out the descending actinometry of sky, can effectively avoid owing under one or several angle, sky directly being measured the error that descending radiation anisotropy causes; Meanwhile, measure the surface temperature of infrared standard plate and deduct the impact of himself launching, can obtain accurately the Downward atmospheric long-wave radiation information under whole sky background.
The computing machine, contact tehermometer and the GPS that in the utility model, use are common apparatus.Computing machine is mainly used in controlling spectrometer and carries out data acquisition and processing; Contact tehermometer is mainly used in measuring infrared standard plate temperature, in the contribution of carrying out deducting when the descending radiation of sky is calculated infrared standard plate self radiation, and for the obtaining of surface temperature initial value, thereby determine the temperature range that spectrometer is demarcated; GPS is for obtaining the geographical location information in region to be measured.Arrange in pairs or groups by system of the present utility model, can effectively measure the infrared emittance spectroscopic data of natural terrain in the wild.
The utility model has been realized a kind of infrared emittance spectroscopic data field measurement system of natural terrain, compared with prior art has obvious advantage and beneficial effect:
1. be applied to natural terrain emissivity measurement field using Fourier infrared spectrograph as main measuring equipment, change traditional utilize infrared thermometer, infrared radiometer and thermal imaging system etc. and can only measure the present situation of fat pipe or limited several passage emissivity, realized the spectral measurement mode of simultaneously obtaining high spectral emittance data in whole middle long wave infrared region.
2. utilize infrared standard plate to assist the measurement of the descending radiation of sky, by measuring the reflection of infrared standard plate, and deduct the transmitting of himself, can obtain accurately the Downward atmospheric long-wave radiation under whole sky background; And traditional measuring equipment that utilizes directly faces toward sky, the sky background radiation of measuring some angles or several angles replaces the descending radiation in whole half spherical space, will certainly introduce the error causing due to the descending radiation anisotropy of sky.
3. reference measure target area surface temperature in the wild, utilize black matrix to carry out on-site proving to spectrometer, can in the dynamic range of target area temperature variation, make spectrometer obtain best calibration data, thereby effectively improve the emergent radiation measuring accuracy of spectrometer to target area to be measured and infrared standard plate.
4. during due to field survey weather condition be not stablize constant, if within the interval time of measurement earth's surface and the radiation of infrared standard plate, atmospheric conditions change, cause that the descending radiation of sky changes, cause the descending radiation of actual measurement and be not equal to the sky background radiation that arrives target surface while measuring earth's surface, the error that the earth's surface emissivity calculating so comprises will be proportional to the variation of the descending radiation of sky.By calibrated spectrometer successively measurement target region and infrared standard plate, between twice measurement, measure infrared standard plate surface temperature with contact tehermometer, can complete in the short time measurement of one-period; This intensive field survey mode, effectively avoids the error of introducing due to the descending radiation variation of sky in the measuring period.
Brief description of the drawings
Fig. 1 is the reflectivity directivity characteristics schematic diagram of infrared standard plate.
Fig. 2 is measuring system schematic diagram of the present utility model.
Wherein, 1 is Fourier infrared spectrograph, the 2nd, and infrared standard plate, the 3rd, black matrix, the 4th, contact tehermometer, the 5th, GPS, the 6th, spectrometer support, the 7th, computing machine, the 8th, natural terrain region to be measured.
Fig. 3 is infrared standard plate surface temperature measurement contact point schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 2, the related natural terrain infrared emittance spectroscopic data field measurement system of the utility model is made up of Fourier infrared spectrograph 1, infrared standard plate 2, black matrix 3, contact tehermometer 4, GPS5, spectrometer support 6 and computing machine 7.Select smooth, the uniform region, earth's surface of physical features as measurement target 8, utilize spectrometer support 6 by 1 of spectrometer in 8 tops, region to be observed, and the liquid nitrogen of annotating carries out the cooling and preheating of starting shooting to spectrometer 1, make spectrometer 1 entrance pupil aim at 8 centers, region to be measured, ensure that spectrometer 1 entrance pupil, perpendicular to earth's surface and 1 meter of left and right of distance, reads the latitude and longitude information of regional center to be measured by GPS5; Meanwhile, infrared standard plate 2 is placed in to physical environment, makes itself and surrounding environment carry out sufficient heat interchange.Utilize contact tehermometer 4 to measure district to be measured 8 surface temperatures, by black matrix 3 temperature controls 5 10 equally spaced temperature spots of degree in the positive and negative 20 degree celsius temperature intervals of district to be measured surface temperature, spectrometer 1 is carried out to on-site proving.Utilize calibrated spectrometer 1 to measure successively infrared standard plate 2 and target area 8, between twice measurement, measure infrared standard plate 2 surface temperatures with contact tehermometer 4, when measurement, contact point distributes as shown in Figure 3; And record the actual conditions in sky condition in measuring process, meteorological condition and region to be measured.
The related natural terrain infrared emittance spectroscopic data field measurement system operating process of the utility model is:
1. select physical features smooth, uniform region, earth's surface is measured;
2. under the calm cloudless weather condition of near surface, Measuring Time should be chosen in sun altitude and change slowly, the time period that surface temperature is more stable; Or there is no the sun, and earth's surface is observed the night under thermal equilibrium state;
3. utilize GPS to obtain observation area geographic position data;
4. utilize contact tehermometer to obtain surface temperature value, then 5 temperature spots of 10 degrees centigrade equally spaced selections in the interval of this temperature positive and negative 20 carry out on-site proving to BOMEM MR154 infrared spectrometer by black matrix temperature control on these temperature spots;
5. utilize BOMEM MR154 to measure infrared standard plate;
6. put the surface temperature of warm instrumentation amount infrared standard plate by contact;
7. then measure terrain object region with BOMEM MR154;
8. record the actual conditions in sky condition in measuring process, meteorological condition and region to be measured;
9. measuring system is moved to next measurement target region, and repeating step 1.8;
10. utilize computer system that field survey data are calculated and processed, obtain the infrared emittance spectroscopic data of measurement target region.
Claims (4)
1. a natural terrain infrared emittance spectroscopic data field measurement system, this system is by Fourier infrared spectrograph (1), infrared standard plate (2), black matrix (3), contact tehermometer (4), GPS (5), spectrometer support (6) and computing machine (7) composition, wherein, Fourier infrared spectrograph (1) is positioned on spectrometer support (6) and is placed in above region to be measured (8), and be connected with computing machine (7), infrared standard plate (2), black matrix (3), contact tehermometer (4), GPS (5) is all placed in region to be measured.
2. measuring system as claimed in claim 1, wherein the spectral resolution of infrared Fourier transform spectral radiometer is 1,2,4,8 or 16cm
-1it is equipped with: a middle Long Wave Infrared Probe, for TeCdHg mercury-cadmium tellurid detector, spectral range 2～20 μ m, a short-wave infrared detector, is InSb indium antimonide detector, spectral range 1.1～5.5 μ m, with a near infrared detector, be Si silicon detector, spectral range 0.7～1.17 μ m.
3. measuring system as claimed in claim 2, wherein infrared Fourier transform spectral radiometer uses TeCdHg mercury-cadmium tellurid detector, and spectral resolution is 1cm
-1.
4. the measuring system as described in one of claims 1 to 3, wherein infrared standard plate has 92%～96% reflectivity in middle long wave infrared region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119500.2U CN203881444U (en) | 2014-03-18 | 2014-03-18 | Natural terrain infrared emissivity spectral data field measuring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119500.2U CN203881444U (en) | 2014-03-18 | 2014-03-18 | Natural terrain infrared emissivity spectral data field measuring system |
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| CN201420119500.2U Expired - Fee Related CN203881444U (en) | 2014-03-18 | 2014-03-18 | Natural terrain infrared emissivity spectral data field measuring system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203589A (en) * | 2015-09-18 | 2015-12-30 | 吉林大学 | Thermal-infrared emission rate determining device and method |
| CN105387941A (en) * | 2015-11-16 | 2016-03-09 | 北京农业智能装备技术研究中心 | System and method for measuring emissivity of surface of animal body |
| CN105424196A (en) * | 2015-12-02 | 2016-03-23 | 中国科学院地理科学与资源研究所 | Portable hyperspectral non-destructive determination device for surface emissivity and optimized determination method thereof |
| CN105738295A (en) * | 2015-12-10 | 2016-07-06 | 中国航空工业集团公司北京长城计量测试技术研究所 | Emissivity measuring device based on tri-off-axis parabolic mirrors and double reference black bodies |
| CN107727244A (en) * | 2017-11-23 | 2018-02-23 | 中国科学院地理科学与资源研究所 | A kind of contactless earth's surface temperature-indicating instrument and method |
| CN114235690A (en) * | 2021-11-25 | 2022-03-25 | 中国人民解放军空军工程大学 | Method and device for measuring surface infrared emissivity of aircraft coating |
-
2014
- 2014-03-18 CN CN201420119500.2U patent/CN203881444U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203589A (en) * | 2015-09-18 | 2015-12-30 | 吉林大学 | Thermal-infrared emission rate determining device and method |
| CN105203589B (en) * | 2015-09-18 | 2018-02-27 | 吉林大学 | A kind of thermal infrared emissivity measure device and its assay method |
| CN105387941A (en) * | 2015-11-16 | 2016-03-09 | 北京农业智能装备技术研究中心 | System and method for measuring emissivity of surface of animal body |
| CN105387941B (en) * | 2015-11-16 | 2018-09-14 | 北京农业智能装备技术研究中心 | A kind of measuring system and method for animal body surface emissivity |
| CN105424196A (en) * | 2015-12-02 | 2016-03-23 | 中国科学院地理科学与资源研究所 | Portable hyperspectral non-destructive determination device for surface emissivity and optimized determination method thereof |
| CN105738295A (en) * | 2015-12-10 | 2016-07-06 | 中国航空工业集团公司北京长城计量测试技术研究所 | Emissivity measuring device based on tri-off-axis parabolic mirrors and double reference black bodies |
| CN107727244A (en) * | 2017-11-23 | 2018-02-23 | 中国科学院地理科学与资源研究所 | A kind of contactless earth's surface temperature-indicating instrument and method |
| CN107727244B (en) * | 2017-11-23 | 2018-11-09 | 中国科学院地理科学与资源研究所 | A kind of contactless earth's surface temperature-indicating instrument and method |
| CN114235690A (en) * | 2021-11-25 | 2022-03-25 | 中国人民解放军空军工程大学 | Method and device for measuring surface infrared emissivity of aircraft coating |
| CN114235690B (en) * | 2021-11-25 | 2023-11-21 | 中国人民解放军空军工程大学 | Method and device for measuring surface infrared emissivity of aircraft coating |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20170318 |
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| CF01 | Termination of patent right due to non-payment of annual fee |