CN201716111U - Multiband infrared radiation automatic measuring system - Google Patents

Multiband infrared radiation automatic measuring system Download PDF

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CN201716111U
CN201716111U CN2010201384839U CN201020138483U CN201716111U CN 201716111 U CN201716111 U CN 201716111U CN 2010201384839 U CN2010201384839 U CN 2010201384839U CN 201020138483 U CN201020138483 U CN 201020138483U CN 201716111 U CN201716111 U CN 201716111U
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China
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radiation
wave
optical path
blackbody
infrared radiation
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CN2010201384839U
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Chinese (zh)
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屈恩世
张建
曹剑中
焦国华
范哲源
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中国科学院西安光学精密机械研究所
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Abstract

The utility model provides a multiband infrared radiation automatic measuring system which can automatically measure the infrared radiation characteristic of measured objects in different wavebands at complicated environments and completely meet the requirement of long-period automatic observation radiation calibration measurement. The multiband infrared radiation automatic measuring system comprises a scanning device, a light split device, an infrared detection device and a control system/circuit, wherein the scanning device, the light split device and the infrared detection device are sequentially arranged on the light path in the incidence direction of radiation; and the scanning device comprises a rotatable protection window, a rotary reflecting mirror and a fixed double-blackbody correction assembly. In the utility model, the spectral split technology and waveband modulation technology are utilized, an intermediate wave detector and a long wave detector are selected for matching, and a measurable optical channel is additionally arranged, thus effectively forming calibration measurement on the radiation of more long wave and medium-wave bands; and as the radiation dimension required by the blackbody radiation cavity is compressed, the difficulty of designing and manufacturing the blackbody is reduced, and the controllable accuracy can be improved.

Description

多波段红外辐射自动测量系统 Automatic multi-band infrared radiation measurement system

技术领域 FIELD

[0001] 本实用新型涉及一种红外辐射测量技术,具体涉及一种多波段红外辐射自动测量系统,尤其应用于对海水温度实时监控。 [0001] The present invention relates to an infrared radiation measurement techniques, particularly to a multi-band infrared radiation automatic measurement system, real-time monitoring of the particular application to water temperature.

背景技术 Background technique

[0002] 用红外方法测量物体温度是一门比较成熟的技术,国内外对各种红外辐射计的研究也比较多,其中自带参考黑体的测量精度不受环境温度的变化,而不带参考黑体的测量精度通常随工作环境的不同而改变。 [0002] The method of measuring body temperature using infrared is a relatively mature technology, studies on a variety of domestic and also infrared radiometer more, wherein the change in the measurement accuracy of the reference black body temperature comes from the environment, rather than with reference to blackbody measurement accuracy generally vary from working environment.

[0003] 红外辐射计在外场工作时,容易受到如下因素影响测量精度。 [0003] infrared radiometer field work outside, susceptible to the following factors affect the measurement accuracy.

[0004] I受环境温度的改变,或探测器芯片、处理电路老化等原因探测器响应系数发生变化; Cause [0004] I affected by changes in ambient temperature, or the detector chip, the processing circuitry aging change detector response factor;

[0005] II红外光学系统膜层老化导致光学系统透过率发生变化; [0005] II infrared optical system of the optical system transmittance film caused by the aging change;

[0006] III辐射计内部壳体温度发生变化导致探测器接收的光学零件表面剩余反射的背景红外辐射通量发生变化。 Change [0006] III radiometer temperature inside the casing resulting in occurrence of background remaining components reflected by the optical surface of the detector receiving infrared radiation flux changes.

[0007] 这些因素综合在一起可严重影响仪器的精度。 [0007] These factors combined may seriously affect the accuracy of the instrument.

[0008] 红外辐射计在测量目标温度时,选择的波段通常为长波波段,这是由目标辐射特性决定的,在此波段内,物体测量通常能以较少的成本获取高的精度,例如CIRIMS (9· 6μπι 〜11. 5 μ m),SISTER (10. 8 μ m),ISAR((9.6ym 〜11. 5ym) „ 然而,不同红外波段的发射率存在着差异,与之相对应的相同温度下物体的红外辐射出射度也有变化, 星载的红外光谱辐射计或红外成像辐射计在对地探测时,根据探测对象的不同,光谱探测范围除了长波红外,还包括中波红外等较宽的工作波段。因此,单一的波段在卫星定标测量时具有一定的局限性。 [0008] The infrared radiation temperature meter at a measurement target, the selected bands is generally a long wavelength band, which is determined by the radiation characteristics of the target, in this band, usually the measurement object acquired with high accuracy at low cost, e.g. CIRIMS (9 · 6μπι ~11. 5 μ m), SISTER (10. 8 μ m), ISAR ((9.6ym ~11. 5ym) "However, different infrared emissivity there are differences, the same as corresponding thereto infrared radiation on the object at a temperature exitance also changed, spaceborne infrared radiometer or infrared imaging radiometer when detected, depending on the detection object, the spectral detection range in addition to long-wave infrared, further comprising MWIR like wide the operating band. Thus, a single wavelength band has certain limitations in a satellite calibration measurement.

[0009] 目前,国外的红外辐射测量设备根据工作原理的不同各有利弊,包含多个波段的设备主要有M-AERI (3μπι〜18 μ m)为傅立叶红外光谱辐射测试设备,AVHRR(3. 8μπι〜 10. 6 μ m)为红外成像辐射测温设备,但这两种仪器,设备构造复杂,价格昂贵,不适宜在外场恶劣条件下的普及应用;法国的CE312设备体积小,灵敏度高,便于携带,但由于其不带参考黑体则测量精度通常随工作环境的不同而改变,同时也需要根据其测温原理人为操作,无法实现自动观测;ISAR是专门研制的海水表面温度观测设备,其自带两个校准黑体, 能够实现自动观测海水表面温度的要求,但其只在长波波段测量。 [0009] Currently, foreign infrared radiation measuring device according to the working principle of the different advantages and disadvantages, the device comprising a plurality of bands there are M-AERI (3μπι~18 μ m) is the Fourier transform infrared radiation testing equipment, AVHRR (3. 8μπι~ 10. 6 μ m) is an infrared radiation temperature image forming apparatus, but the two instruments, the device structure is complicated, expensive and not suitable for universal application outside the field under harsh conditions; France CE312 small device size, high sensitivity, easy to carry, but because of its different blackbody reference without operating environment generally increases the accuracy of the measurement is changed, but also the need for human operation in accordance with the principle of its temperature, can not be automatically observed; the ISAR is specially developed sea surface temperature monitoring device, which It comes with two blackbody calibration, the automatic observation of the sea surface temperature requirement, but it is only measured at a long wavelength band. 而国内目前还没有类似的适用于外场恶劣条件下测量复杂背景下物体辐射的测量设备,尤其是无法适时自动测量复杂背景下被测物在不同波段内的红外辐射特性,发展户外恶劣条件下的高精度的定标设备。 And there is no domestic similar applicable under field harsh conditions measuring device object radiated complex background, especially not timely automatic measurement of infrared radiation characteristics of complex background analyte in a different band, the development of outdoor harsh conditions the high precision device calibration.

实用新型内容 SUMMARY

[0010] 本实用新型提供了一种多波段红外辐射自动测量系统,该多波段红外辐射自动测量系统作为国内外同类技术的自主创新成果,参考借鉴国外相关设备设计、应用的成果和经验,密切结合实际的使用用途,发展户外恶劣条件下的高精度的定标设备,自带两个参考黑体,波段范围涵盖中波红外和长波红外的多个波段,既可提高测量精度,又可以用于卫星数据的定标,在技术上选择合理的器件和设计方案,降低开发成本,达到普及使用的目的, 通过可靠性设计,适时自动测量复杂背景下被测物在不同波段内的红外辐射特性,完全满足长期无故障自动观测辐射定标测量的需求。 [0010] The present invention provides a multi-band infrared radiation automatic measuring system, the multi-band infrared radiation independent innovation automatic measurement system as a similar technology at home and abroad, a reference for foreign-related equipment design, results and application experience, close the actual purpose of use, the development of high-precision calibration equipment in harsh outdoor conditions, carrying two blackbody reference, covering the plurality of band MWIR and LWIR bands, and can improve the measurement accuracy, but may be used scaling satellite data, technically reasonable choice and design of the device, reduce development costs, achieve universal access, through the reliability of the design, timely automatic measurement complex background infrared radiation characteristics were measured in different wavelength bands, fully meet the long-term trouble-free automatic radiometric calibration measurement observation needs.

[0011] 本实用新型的技术方案如下: [0011] The technical solution of the present invention are as follows:

[0012] 该多波段红外辐射自动测量系统包括扫描装置、分光装置、红外探测装置和控制系统/电路,其中扫描装置、分光装置、红外探测装置依次设置于辐射入射方向的光路上; 扫描装置由运动部分和固定部分组成,其中运动部分包括保护窗和旋转反射镜,固定部分包括双黑体校正组件;所述保护窗设置于辐射入射方向的光路的最前端,旋转反射镜与保护窗相对位置恒定,双黑体校正组件由常温黑体、控温黑体以及各自独立的电源和控制系统组成;分光装置包括在光路上依次设置的中继镜和分光镜;红外探测装置由长波探测组件和中波探测组件构成; [0012] The multi-band infrared radiation automatic measurement system comprises a scanning means, splitting means, infrared detection means, and a control system / circuit, wherein the scanning means, splitting means, infrared detection device are sequentially disposed in a radiation incident direction of the light path; scanning means by the moving part and the fixed part, wherein the moving part comprises a protection window and a rotating mirror, the fixed portion includes a double bold correction component; the protecting foremost end of an optical path window is provided in the radiation incident direction, a rotating mirror and a protective window relative position constant double bold bold correction component from normal temperature, the blackbody temperature and separate power and control system; spectroscopic means includes a relay mirror and a beam splitter disposed on the optical path sequentially; longwave infrared detection device by a wave detection assembly and probe assembly constitution;

[0013] 设保护窗至旋转反射镜之间的光路为A段光路,旋转反射镜至分光镜之间的光路为B段光路,分光镜至长波探测器之间的光路为C段光路,分光镜至中波探测器之间的光路为D段光路,则由A段光路的光轴与B段光路的光轴形成的平面与旋转反射镜镜面垂直,且旋转反射镜和保护窗能够受控以B段光轴为中心轴旋转;在保护窗的旋转视场范围内分布有外部干扰辐射区、被测目标辐射区、常温黑体辐射区和控温黑体辐射区,上述四个辐射区在旋转反射镜旋转至对应位置时与其形成的光路的光轴位于同一平面且相交于旋转反射镜上同一点。 [0013] provided the protective window into the optical path between the rotating mirror segment A light path, the optical path between the rotating mirror to the beam splitter is a B segment light path, the dichroic mirror to the optical path between the long-wave detector is a C section beam path, a beam the optical path between the mirror wave detector is a light path D segment, a plane mirror and a rotating mirror axis perpendicular to the optical axis by the optical path a and segment B of the optical path formation section, and a rotating mirror and a protective window can be controlled in segment B-axis rotation center axis; distributed within the field of view of the scope of the rotation of the window region external interfering radiation, radiation measured target area, area and room temperature blackbody radiation blackbody radiation temperature region, the four rotary irradiation zone optical axis of light path formed therewith the mirror is rotated to a corresponding position in the same plane and intersect at the same point on a rotating mirror. 所述外部干扰辐射区作为旋转反射镜扫描外部干扰辐射的通道,例如,当被测目标为海水(水温),则外部干扰主要是海水表面反射的来自天空的辐射,因此,可选择旋转反射镜镜面向上的某个区域为外部干扰辐射区,旋转反射镜镜面向下的某个区域为被测目标辐射区。 The external interfering radiation passage area as a rotating mirror scanning an external interfering radiation, e.g., when the measured target water (water temperature), the sea surface external disturbance is mainly reflected radiation from the sky, thus selectively rotating mirror a region up to a region outside the mirror area interference radiation, a rotating mirror as the mirror surface downward radiation measured target area.

[0014] 上述长波探测组件包括在光路上依次设置的长波滤光镜、长波聚焦透镜和长波探测器,中波探测组件包括在光路上依次设置的中波滤光镜、中波聚焦透镜和中波制冷探测器;所述长波滤光镜是由多块不同波段范围的带通滤光片组合集成,各带通滤光片位置能够受控移动。 [0014] The probe assembly includes a long wave long wave filters are sequentially arranged on the optical path, the long-wave and long-wave detector focusing lens, wave probe assembly comprises a wave filters are sequentially arranged on the optical path, the wave focusing lens and refrigeration wave detector; filter the longwave bandpass filter is integrated by a combination of a plurality of different wavelength range, the position of each of the band-pass filter can be controlled movement.

[0015] 上述长波滤光镜是由多块不同波段范围的带通滤光片按照中心对称排布组成的滤光镜转盘,滤光镜转盘由旋转马达驱动,C段光路每次只通过其中一块带通滤光片。 [0015] The filter is composed of a plurality of longwave bandpass filters of different wavelength range are arranged symmetrically according to the composition of the filter wheel, the filter wheel is driven by a rotation motor, C through a time period in which the optical path a bandpass filter.

[0016] 上述B段光路的光轴与旋转反射镜镜面呈45度角,保证了经旋转反射镜的入射光路和出射光路成90度,便于自动测量系统整体的空间设计。 [0016] The section of the optical path B and the optical axis of a rotating mirror specular angle of 45 degrees, to ensure that the incident optical path by the rotating mirror and the exit light path 90 degrees, to facilitate the automatic measurement of the overall system design space.

[0017] 上述运动部分封装作为扫描反射组件,光路上自中继镜后整体密封,并充氮保护, 用固体干燥剂保持内部光学系统和探测器干燥。 [0017] The moving part of the package as a scanning reflector assembly, since the optical path of the relay lens integral seal, and protection of nitrogen, keeping the internal optical system and a detector with a solid desiccant drying.

[0018] 上述分别位于常温黑体辐射区和控温黑体辐射区的两个黑体源为常温面源黑体和控温面源黑体,扫描反射组件与两个黑体源的辐射出射口之间的距离皆不大于10mm。 [0018] The distance between the two blackbody sources are located at room temperature and blackbody radiation temperature region of the black body radiation region and a normal temperature area blackbody area blackbody temperature, scanning reflector assembly with two blackbody sources are radiation exit port not more than 10mm.

[0019] 上述长波聚焦透镜的耦合参数与长波探测器保持一致,所述中波聚焦透镜的耦合参数与中波制冷探测器保持一致。 [0019] The focus lens longwave coupling parameters consistent with the long-wave detector, the focusing lens is coupled wave parameters consistent wave detector cooling.

[0020] 上述保护窗外表面镀类金刚石高效红外增透膜,旋转反射镜表面镀银外反膜并外加介质保护。 [0020] surface of the protective window diamond plating efficiency infrared antireflection film, a rotating mirror outer surface of the silver reflection film is applied and medium protection. [0021] 上述控制系统/电路包括对旋转反射镜的控制、滤光镜转盘的控制。 [0021] The control system / control circuit includes a rotating mirror, a filter wheel control.

[0022] 上述长波探测器为热释电探测器,中波制冷探测器为中波HgCdTe探测器。 [0022] The long-wave detector is a pyroelectric detector, the detector for the cooling medium wave AM HgCdTe detector.

[0023] 本实用新型优点总结如下: [0023] The advantages of the present invention is summarized as follows:

[0024] 1、采用双黑体实时校正系统消除红外辐射计内部辐射和探测响应的不一致性,达到实时较正的目的; [0024] 1, dual time correction blackbody infrared radiometer system eliminates inconsistencies and internal radiation probe response, to achieve more positive real object;

[0025] 2、使用光谱分光以及波段调制扫描技术,选用两个中、长波探测器与之匹配,增加了可测量的光学通道,有效形成对更多的长波和中波波段的辐射定标测量; [0025] 2, a spectral band spectral modulation and scanning technology, the choice of two, to match the long-wave detector, the optical path measurable increase, effective to form radiometric calibration measurement wave and long wave more segments of ;

[0026] 3、内部的光学系统通过合适的光路变换,压缩了黑体辐射腔所要求的辐射尺寸, 降低了黑体设计、制造的难度,提高了可控制的精度; [0026] 3, inside the optical system by an appropriate optical path conversion, compress the blackbody radiation irradiation chamber required size, reduced bold design, difficult to manufacture, can improve the accuracy of control;

[0027] 4、本产品通过可靠性设计,完全可以满足长期无故障自动观测辐射定标测量的需求,也由此使其具有更广泛的用途。 [0027] 4, the product reliability by design, can meet the long-term trouble-free automatic survey needs calibration measurement radiation, thereby making it also has a broader range of uses.

附图说明 BRIEF DESCRIPTION

[0028] 图1为天空背景对海水辐射测量影响示意图; [0028] Figure 1 is a schematic view of the influence on seawater sky background radiation measurement;

[0029] 图2为扫描反射组件及其工作原理示意图; [0029] FIG. 2 is a schematic view of the scanning reflector assembly and how it works;

[0030] 图3为扫描装置结构及原理示意图,其中a为扫描装置的结构示意图(立体内部结构示意),b为扫描装置的工作原理示意图; [0030] FIG. 3 is a schematic view of the scanning apparatus structure and principle, wherein a is a schematic view of a scanning device (a schematic perspective internal structure), b is a schematic view of the working principle of the scanning device;

[0031] 图4为本实用新型的红外光学系统结构和光路示意图; [0031] FIG. 4 disclosure infrared optical system and a schematic diagram of an optical path;

[0032] 图5为滤光镜转盘结构示意图。 [0032] FIG. 5 is a schematic structure of the filter wheel.

[0033] 图6为本实用新型系统整体示意图。 [0033] FIG. 6 is a schematic view of a whole new practical system.

[0034] 附图标号说明: [0034] Reference numerals:

[0035] 1-扫描反射组件,11-旋转反射镜,12-保护窗,2-常温黑体,3_控温黑体,4_驱动单元,5-后方光学系统,6-红外探测器,51-中继镜,52-分光镜,53-长波滤光镜(滤光镜转盘),530-带通滤光片,54-长波聚焦耦合透镜,55-中波滤光镜,56-中波聚焦耦合透镜, 61-长波探测器,62-中波制冷探测器,7-A段光路,8-B段光路,9-C段光路,IO-D段光路。 [0035] 1- scanning reflector assembly, a rotating mirror 11-, 12- protective window, 2- blackbody at room temperature, the blackbody temperature 3_, 4_ driving unit, 5 behind the optical system, infrared detectors 6-, 51- relay lens, beam splitter 52-, 53- long wave filter (filter wheel), 530- bandpass filter, coupled to the focusing lens longwave 54-, 55- wave filter, the wave focusing 56- coupling lens, long wave detector 61-, 62- refrigeration wave detector, 7-A section of the optical path, 8-B section of the optical path, 9-C section of the light path, IO-D section of the optical path.

具体实施方式 Detailed ways

[0036] 本实用新型提供的多波段红外辐射自动测量系统主要采用旋转反射镜扫描高、常温黑体、天空和海水表面的工作方式。 [0036] The present multi-band infrared radiation invention provides automatic measurement system mainly uses a rotating mirror scanning high blackbody at room temperature, sky and sea work surface. 在这里,来自天空的辐射视为外部干扰辐射,来自海水的辐射视为被测目标辐射。 Here, the radiation from the sky regarded as external interference radiation, radiation from seawater treated as measured target radiation. 扫描控温黑体、常温黑体可以实时修正红外探测系统的光电响应系数,消除红外光学系统透过率变化或环境温度变化,探测器响应系数变化带来的影响;扫描天空和海水表面修正海空背景辐射对海水辐射测温的影响。 Scanning blackbody temperature, ambient temperature can be corrected in real time blackbody infrared photoresponse coefficient detection system, to eliminate the infrared optical system transmittance variation or ambient temperature changes, the impact of changes in detector response factor; scan the sky and the sea and sky background corrected sea surface impact on seawater radiation thermometry radiation.

[0037] 参考图6系统整体示意图,外部场景和实时校正标准源通过扫描组件依次进入红外光学系统观察视场,光学系统将外部的红外辐射聚焦在红外探测器探测面上,红外探测器根据红外辐射通量的大小输出与之相对应的电压或电流值,经前置放大器预处理后,将微小的电压或电流值转换为红外辐射成正比的电压值,中央控制器和定时器通过时序控制信号采集及数据处理运算组件,分别采集外部场景和黑体每个目标在不同波段的电压值, 经A/D转换后,量化为响应数据,经过RS485串口传输相关数据到控制总台并显示,达到对海水表面温度进行监控的目的。 [0037] Referring to FIG 6 a schematic view of the entire system, and real-time calibration standard external scene by the scanning assembly source sequentially into the field of view infrared optical system, the optical system focusing the external infrared radiation in an infrared detector on the detection surface, the infrared detector the infrared radiant flux corresponding to the magnitude of the output voltage or current thereto relative value, the preamplifier pretreatment, the minute voltage or current value into a voltage value proportional to the infrared radiation, by the central controller and timing control timer signal acquisition and data processing operations component were collected and the external scene blackbody target voltage value of each different wavelengths, after a / D conversion, in response to the quantized data, via RS485 serial data transmitted to the control station and the total display, to of sea surface temperature monitoring purposes. [0038] 另外,自动保护装置用于保护本实用新型的测量系统本体不受外界环境如天气情况等的损伤。 [0038] Further, automatic protection device for protecting a measuring system according to the present invention the body from environmental damage, such as weather conditions or the like. 例如,本实用新型设置于舰艇上,当海上暴风雨时,则自动保护装置可提供加盖遮蔽,防雷电处理或直接关闭保护窗等。 For example, the present invention is provided on the ship, when the storm at sea, the device may provide automatic protection shield capping, lightning protection process or close windows.

[0039] 详细实现方法包括如下部分: [0039] Detailed implemented method comprising the following components:

[0040] 1、场景红外辐射分离和标准辐射源实时校正 [0040] 1, the infrared radiation scene radiation time correction and the standard separation

[0041] 场景包含海水和天空,海水为待测的目标,天空作为背景。 [0041] The scene contains sea and sky, sea water is measured target, the sky as a background. 实时校正黑体源为两个不同温度的黑体,其中一个黑体为常温黑体,温度固定,另一个黑体为控温黑体。 Real-time correction for the two blackbody sources at different temperatures of a black body, wherein a normal bold black body, temperature is fixed, the other bold blackbody temperature. 两个黑体为面源黑体,辐射腔具有大于0. 998的发射率,温度均勻性和温度控制精度> 0. IK0在方案中采用扫描天空和标准辐射源的方法主要为了实现场景海水红外辐射和天空辐射的分离, 通过标准辐射源实时校正辐射计响应系数。 Two bold area blackbody radiation chamber having an emissivity of greater than 0.998, the temperature uniformity and temperature control precision> 0. IK0 scanning radiation sources in the sky and the standard method of the embodiment in order to achieve the main scene infrared radiation and water pyranometer isolated by standard radiometer calibration radiation source in real time in response coefficients. 具体原理如下: Specific works as follows:

[0042] 场景分离: [0042] Scene separation:

[0043] 图1说明了红外辐射计(多波段红外辐射自动测量系统)在测量海水红外辐射时需要考虑的一些因素。 [0043] Figure 1 illustrates a number of elements (multi-band infrared radiation automatic measuring system) In the measurement of infrared radiation to be considered seawater infrared radiometer. 如果海水表面是一个完美的辐射体,那么可直接测量其光谱辐射,根据普朗克公式计算海水的温度,然而,海水的发射率稍稍小于1,它根据辐射波长和辐射角的稍有不同,因此,进入辐射计的红外辐射包含大气的一小部分辐射。 If the water surface is a perfect radiator, the spectral emissivity can be measured directly, calculated according to water temperatures Planck equation, however, is slightly smaller than the emissivity of water 1, which is slightly different according to the wavelength of the radiation and the radiation angle, Thus, infrared radiation entering the radiometer comprises a small portion of the radiation of the atmosphere. 为了能准确测量海水的辐射,必须同时测得下方海水反射作为背景的大气辐射,确切知道海水表面发射率ε的数值。 In order to accurately measure the radiation of seawater, seawater must be measured under the atmospheric radiation reflected as a background, to know exactly the value of the sea surface emissivity ε. 根据以往的研究和测试,平静的海水在9μπι-12μπι波段范围内,在天顶角θ <40° 范围内,发射率ε具有最大值>0.98。 Based on previous studies and tests, in calm waters 9μπι-12μπι wavelength range, the zenith angle θ <the range of 40 °, has a maximum emissivity ε> 0.98.

[0044] 红外辐射计内置不同的波段滤光片,在测量时,选择需要测量的波段通道,测量向上的大气红外辐射,测量向下的海水红外辐射和海平面反射的大气红外辐射,测量的天顶角θ <40°,天空背景和海平面反射的天空背景像同属一个区域。 [0044] infrared radiometer different built band filter, in the measurement, the channel select band measurement, measuring atmospheric infrared radiation upward, downward water measuring infrared radiation and atmospheric infrared radiation reflected by the sea level, measured zenith angle θ <40 °, sky background sea and sky background area belong to the same image reflected.

[0045] 设定向下测量的红外辐射为Md_, [0045] The set down for the infrared radiation measured Md_,

[0046] Μ [0046] Μ

lV1 down ~ : : V 1 ^ lV1 down ~:: V 1 ^

Zt2-Zt1 Zt2-Zt1

[0047] (1)式中,ε λ为海水的表面在指定波长的发射率,Lsra为海水表面的同温度黑体的红外辐射出射度,即 [0047] (1) In the formula, ε λ of the surface water in the specific wavelength of emission, at the same temperature LSRA infrared blackbody radiation exit surface of the water level, i.e.,

Ihc2 Ihc2

[0048] [0048]

[0049] [0049]

[0050] [0050]

[0051] [0051]

[0052] [0052]

L—=. L- =.

2 2

Λ5 Λ5

其中τ λ为光学系统在特定波长的透过率。 Wherein τ λ transmittance at a specific wavelength of the optical system. 当波段范围较窄时,τ λ、ε λ可视为常量,此时 When a narrow wavelength range, τ λ, ε λ can be regarded as a constant, then

Mdown =^xKea+(I-^K Mdown = ^ xKea + (I- ^ K

J sky J J sky J

通过黑体标定时,Mdown = MtaX τ (4) Through blackbody calibration, Mdown = MtaX τ (4)

3 3

[0053] 其中为Mta黑体在温度TA时的红外辐射出射度, [0053] wherein Mta is the infrared blackbody at temperature TA degree of radiation emitted,

[0054]向上的红外辐射 Mup,Mup = τ XLsky (5) [0054] infrared radiation upward Mup, Mup = τ XLsky (5)

[0055] 通过黑体标定时,Mdown = MtbX τ (6) [0055] through the blackbody calibration, Mdown = MtbX τ (6)

[0056] 其中Mtb为黑体在温度TB时的红外辐射出射度,根据(3)〜(6)式,可解得[0057] [0056] wherein bold Mtb infrared temperature TB at the exit of the radiation, according to (3) to (6), we can solve for [0057]

Figure CN201716111UD00071

[0058] 由于中波红外发射率ε和长波略有不同,ε λ可根据以往的研究结果直接给出, 或可根据现场测量获得,测量方法如下: [0058] Since the wave and long-wave infrared emissivity [epsilon] is slightly different, ε λ may be given directly in accordance with previous findings, or may be obtained according to the site survey, the measurement method is as follows:

[0059] 设备首次使用时,用水温计直接测量海水表面温度,根据红外辐射计测得的场景综合红外辐射黑体等效温度,天空红外辐射黑体等效温度以及水温计的温度值根据(2)式分别计算L_、Mta和Mtb,将L_、Mta和Mtb代入(7)式,计算海水红外发射率ε ” [0059] When the device is first used, with the sea water temperature meter directly measuring the surface temperature, the integrated infrared radiation blackbody equivalent temperature measured by an infrared radiometer scene, sky equivalent blackbody infrared radiation temperature meter and a temperature value of the water temperature according to (2) formula calculates L_, Mta and Mtb, will L_, Mta and Mtb substituted into equation (7), is calculated seawater infrared emissivity ε "

[0060] 红外发射率ε λ经测定或给定后,可根据(7)式解算出海水表面的红外辐射,根据(2)式求解海水表面温度。 [0060] The infrared emissivity ε λ or after a given measurement, infrared radiation can be calculated from the water surface (7) solution in accordance with the formula, according to solving the sea surface temperature (2).

[0061] 实时校正 [0061] Real-Time Correction

[0062] 红外辐射计在外场工作时,容易受到如下因素影响测量精度。 [0062] The infrared radiometer field work outside, susceptible to the following factors affect the measurement accuracy.

[0063] I受环境温度的改变,或探测器芯片、处理电路老化等原因探测器响应系数发生变化。 Cause [0063] I affected by changes in ambient temperature, or the detector chip, the processing circuitry aging change detector response factor.

[0064] II红外光学系统膜层老化导致光学系统透过率发生变化。 [0064] II infrared optical system of the optical system transmittance film caused by the aging change.

[0065] III辐射计内部壳体温度发生变化导致探测器接收的光学零件表面剩余反射的背景红外辐射通量发生变化。 Change [0065] III radiometer temperature inside the casing resulting in occurrence of background remaining components reflected by the optical surface of the detector receiving infrared radiation flux changes.

[0066] 这些因素综合在一起可严重影响仪器的精度。 [0066] These factors combined may seriously affect the accuracy of the instrument.

[0067] 采用双黑体标准辐射源实时校正的方法的消除以上因素的影响,具体原理可用如下数学过程予以说明。 [0067] The standard method of double blackbody radiation corrected in real time to eliminate the above factors, in particular the principle of a mathematical process can be used as will be described.

[0068] 在探测器选用上,选取辐射响应线型度较好的区域,则探测器的红外辐射和电压或电流响应可通过(8)式表示: [0068] In the detector selection, selection of a good linear response to the radiation area, and the infrared radiation detector voltage or current response may be represented by Formula (8):

[0069] D = AXL+B (8) [0069] D = AXL + B (8)

[0070] 式中,D为电压或电流响应数值,A为响应系数,L为探测器表面收集的红外辐射, [0070] In the formula, D in response to a voltage or current value, A is the response factor, L is collected by the infrared radiation detector surface,

B为常量。 B is a constant.

[0071] 红外辐射L包括内部光学元件表面剩余反射的壳体红外辐射Ls,目标经光学系统透射的红外辐射L。 [0071] L-infrared radiation comprises an optical element inner surface of the remaining infrared radiation reflected by the housing Ls, the target optical system by the infrared radiation transmitted L. ,在较短时间内,壳体温度变化较小,因此,在每次时间间隔内,可认为Ls 为一常量,则(8)式可描述为 In a relatively short time, low temperature dependence of the housing, and therefore, during each time interval, Ls may be considered as a constant, the equation (8) may be described as

[0072] D = AXL0+B (9) [0072] D = AXL0 + B (9)

[0073] 扫描镜对准控温、常温黑体时,根据(9)式得: [0073] The scanning mirror is aligned temperature, normal temperature blackbody, according to (9), we have:

[0074] D1 = AXLol+B (10) [0074] D1 = AXLol + B (10)

[0075] D2 = AXLo2+B [0075] D2 = AXLo2 + B

[0076] L01^L02可根据控、常温黑体温度结合(2)式算出。 [0076] L01 ^ L02 may be bound (2) is calculated based on a control, normal blackbody temperature.

[0077] DpD2为观察不同温度黑体时得到的电压或电流值。 [0077] DpD2 voltage or current value is different temperature of the blackbody viewed obtained.

[0078] 根据(10)式可计算出响应系数A和常量B,而后可根据未知温度的响应值D通过(8)式求出红外辐射L的量值。 [0078] According to formula (10) can be calculated in response to the constant coefficients A and B, then L can be determined by the magnitude of the infrared radiation (8) the response value D unknown temperature.

[0079] 2、扫描反射组件 [0079] 2, the scanning reflector assembly

[0080] 扫描装置的运动部分主要是扫描反射组件,扫描反射组件的核心部件为旋转反射镜,如图2、图3所示,旋转反射镜相对于旋转轴(即B段光路8的光轴)45°放置,由驱动单元4 ( 一般采用步进电机)带动扫描反射组件1绕旋转轴转动,旋转轴和后方光学系统的光轴重合。 Moving part [0080] The scanning apparatus main scanning reflector component, the core component of the scanning reflector is a rotating mirror assembly, FIG. 2, FIG. 3, a rotating mirror with respect to the axis of rotation (i.e., the optical axis of the optical path 8 of segment B ) 45 ° is placed, by a drive unit (typically a stepping motor) driven by the scanning reflector assembly 1 is rotated around the rotation shaft 4, the rotary shaft and the optical axis behind the optical system coincide. 旋转反射镜11做360°旋转可依次分别扫描外部干扰场景(即天空)、被测目标场景(即海水)和内置的黑体源(常温黑体2和控温黑体3),将其红外辐射依次导入后方的红外光学系统5。 Rotating mirror 11 can be rotated 360 °, respectively sequentially scan the external interference scenario (i.e. the sky), the measured target scene (i.e., water) and a built-blackbody source (black body temperature and room temperature blackbody 2 3), which is in turn introduced into infrared radiation 5 behind the infrared optical system.

[0081] 3、红外光学系统 [0081] 3, the infrared optical system

[0082] 红外光学系统的结构及光路如图4所示。 [0082] The structure and the optical path of the infrared optical system is shown in Fig.

[0083] 上述四个辐射源(场景)的红外辐射经保护窗12和旋转反射镜11后,投射在中继镜51上,中继镜改变光路,一方面压缩光路尺寸,另一方面使得光线结构适合光束分光以及光束滤光。 [0083] The four radiation source (scene) of the infrared radiation by the protective window 12 and the rotating mirror 11, relay lens 51 projected on the relay lens to change the optical path, the optical path on the one hand the size of the compression, on the other hand so that the light beam splitter and beam structure suitable filter. 经分光镜52后,光路分成两部分,一部分进入中波聚焦耦合透镜56,另一部分进入长波聚焦耦合透镜54。 After beam splitter 52, the optical path is divided into two parts, one part is coupled into the wave focusing lens 56, and the other portion enters the coupling lens 54 focusing the long wave. 长波滤光镜53是由3块带通滤光片530组成的滤光镜转盘53 (也称为滤光调制盘),波段范围根据要求待定,三块带通滤光片5301固定在滤光镜转盘53上,由步进电机带动根据要求旋转,滤光镜转盘53的结构如图5所示。 53 is a long wave filter 3 composed of bandpass filter 530 filters the turntable 53 (also referred to as a modulated optical disk), the wavelength range to be determined according to the requirements, three band-pass filter 5301 is fixed to the filter mirror the turntable 53, driven by a stepping motor rotation according to the requirements, the structure of the filter wheel 53 is shown in FIG. 如果对长波探测器61要求接收尽可能多的波段范围进行分析,则可以通过延长旋转反射镜11步进转动的周期,以配合长波滤光镜53完成各波段的辐射接收(三块带通滤光片530依次旋转至C段光路上)。 If the detector 61 receives the long-wave band of as much as required for analysis, the extension may be rotated by a rotating mirror 11 step cycles to complete with longwave radiation receiving filter 53 of each band (three band-pass filter light sheet 530 is rotated to turn the optical path segment C).

[0084] 耦合透镜聚焦红外辐射在红外探测器上,聚焦透镜的设计的耦合参数与探测器保持一致,保证最大的光能接收效率。 [0084] The coupling lens to focus the infrared radiation on the infrared detector, the focusing lens is coupled to the detector design parameters consistent to ensure maximum light reception efficiency.

[0085] 保护窗外表面镀类金刚石高效红外增透膜,扫描镜表面镀银外反膜并外加介质保护。 [0085] The window is protected plated diamond efficient infrared antireflection film scanning mirror reflecting film and an outer surface of silver plus medium protection. 中继镜后整体密封,并充氮保护,并用固体干燥剂保持内部光学系统和探测器干燥,进而保证光学系统的透过率不出现较大变化。 After sealing the entire relay lens, protection and nitrogen and maintaining the internal optical system and detector dried with a solid desiccant, thereby ensuring a large change in transmittance of the optical system does not occur.

[0086] 该多波段红外辐射自动测量系统使用两个红外探测器,一种为热释电探测器,工作在长波波段,另一种为中波HgCdTe探测器。 [0086] The multi-band automatic measurement system using infrared radiation, two infrared detectors, one for the pyroelectric detector operating in a long wavelength band, as another wave HgCdTe detector.

[0087] 长波热释电探测器选用国产的GAT500探测器,GAT500预处理电路带前置放大器, 放大器倍率大于1000倍。 [0087] Long Wave pyroelectric detector probe selected domestic GAT500, GAT500 preprocessing circuit with pre-amplifier, which is greater than 1000-fold magnification.

[0088] 中波选用波兰VIGO公司的PCI-2TE-5产品。 [0088] Polish Polish VIGO's selection of PCI-2TE-5 product. 中波红外测量目标主要适用于温度较高的环境,当环境温度下降为-60°C时,中波红外的辐射量将下降4个数量级,信号过于微弱,无法实现准确测量。 MWIR measurement target is mainly applied to a high temperature environment, when the ambient temperature falls to -60 ° C, MWIR radiation will drop four orders of magnitude, the signal is too weak, accurate measurement can not be achieved.

[0089] 红外探测器探测到红外信号经内部自带的前置放大电路,变换为电压信号,经过后续的电压跟随电路、低通滤波电路和比例放大电路将小信号放大到合适的电压值,以满足信号动态范围检测要求。 [0089] The infrared detector detects infrared signal carrying the internal preamplifier circuit, converted into a voltage signal, the voltage follower circuit through a subsequent low-pass filter circuit and a scaling circuit amplifies the small signal voltage to an appropriate value, signal dynamic range to meet the testing requirements.

[0090] 本实用新型提供的具体实施方案的多波段红外辐射自动测量系统,使用光谱分光以及波段调制扫描技术,选用两个中、长波探测器与之匹配,使得可测量的光学通道增加为4个,具有长波3个波段和中波红外1个波段,可以完成更多波段的辐射定标测量,具有更广泛的用途。 [0090] The multi-band infrared radiation of specific embodiments of the present invention provides an automatic measurement system using spectral bands and spectral modulation scanning technique, the selection of two long-wave probe match, so that the optical channel is increased to be measured 4 two, three bands having a long and a medium wave infrared band radiometric calibration measurement can be accomplished more bands having a broader range of uses. 内部的光学系统通过合适的光路变换,压缩了黑体辐射腔所要求的辐射尺寸,降低了黑体设计、制造的难度,提高了可控制的精度。 Inside the optical system by an appropriate optical path conversion, compress the blackbody radiation irradiation chamber required size, reduced bold design, manufacturing difficulties, to improve the control accuracy. 此外,本产品通过可靠性设计,完全可以满足长期无故障自动观测辐射定标测量的需求。 In addition, the product reliability by design, can meet the long-term trouble-free automatic radiometric calibration measurement observation needs.

Claims (9)

  1. 一种多波段红外辐射自动测量系统,其特征在于:所述自动测量系统包括扫描装置、分光装置、红外探测装置和控制系统/电路;所述扫描装置、分光装置、红外探测装置依次设置于辐射入射方向的光路上;扫描装置由运动部分和固定部分组成,运动部分包括保护窗和旋转反射镜,固定部分包括双黑体校正组件;所述保护窗设置于辐射入射方向的光路的最前端,旋转反射镜与保护窗相对位置恒定,双黑体校正组件由常温黑体、控温黑体以及各自独立的电源和控制系统组成;分光装置包括在光路上依次设置的中继镜和分光镜;红外探测装置由长波探测组件和中波探测组件构成;设保护窗至旋转反射镜之间的光路为A段光路,旋转反射镜至分光镜之间的光路为B段光路,分光镜至长波探测器之间的光路为C段光路,分光镜至中波探测器之间的光路为D段光路 A multi-band infrared radiation automatic measuring system, wherein: said automatic measuring system includes a scanning means, splitting means, infrared detection means, and a control system / circuit; said scanning means, splitting means, the infrared radiation detecting means disposed successively an optical path direction of incidence; scanning means by the moving part and the fixed part, the moving part comprises a protection window and a rotating mirror, the fixed portion includes a double bold correction component; the protecting foremost end of an optical path window is provided in the radiation incident direction, the rotation reflector and the relative position of the protection window constant, bis bold bold correction component from normal temperature, the blackbody temperature and separate power and control system; spectroscopic means includes a relay mirror and a beam splitter disposed on the optical path sequentially; by the infrared detection device long wave and medium wave detection component constituting the probe assembly; protective window disposed between the optical path a as a rotating mirror optical path segment, a rotating mirror to the beam splitter the light path between the light path for the B segment, between the beam splitter to the detector longwave section C of the light path light path, the optical path between the beam splitter to a detector wave segment of the optical path D 则由A段光路的光轴与B段光路的光轴形成的平面与旋转反射镜镜面垂直,且旋转反射镜和保护窗能够受控以B段光轴为中心轴旋转;在保护窗的旋转视场范围内分布有外部干扰辐射区、被测目标辐射区、常温黑体辐射区和控温黑体辐射区,上述四个辐射区在旋转反射镜旋转至对应位置时与其形成的光路的光轴位于同一平面且相交于旋转反射镜上同一点。 Rotating mirror plane perpendicular to an optical axis of the mirror by the optical path segment A and segment B of the optical path is formed, and a rotating mirror and a protective window can be controlled to the rotation axis B as a central axis segment; rotary protective window distributed disturbance zone within the field of view of the radiation, the radiation measured target area, area and room temperature blackbody radiation blackbody radiation temperature region, the optical axis of the optical path formed therewith when said four radiating area to the corresponding rotational position of a rotating mirror is located in the the same plane and intersect at the same point a rotating mirror.
  2. 2.根据权利要求1所述的多波段红外辐射自动测量系统,其特征在于:所述长波探测组件包括在光路上依次设置的长波滤光镜、长波聚焦透镜和长波探测器,中波探测组件包括在光路上依次设置的中波滤光镜、中波聚焦透镜和中波制冷探测器;所述长波滤光镜是由多块不同波段范围的带通滤光片组合集成,各带通滤光片位置能够受控移动。 Multi-band infrared radiation according to claim 1, said automatic measuring system, wherein: said probe assembly includes a long wave long wave filters are sequentially arranged on the optical path, the long-wave and long-wave detector focusing lens, wave probe assembly wave filter comprising successively arranged on the optical path, the focusing lens and the wave detector wave refrigeration; the long-wave filter is a bandpass filter integrated combination of a plurality of different wavelength range, each of the band-pass filter moving the position of the light sheet can be controlled.
  3. 3.根据权利要求2所述的多波段红外辐射自动测量系统,其特征在于:所述长波滤光镜是由多块不同波段范围的带通滤光片按照中心对称排布组成的滤光镜转盘,滤光镜转盘由旋转马达驱动,C段光路每次只通过其中一块带通滤光片。 Multi-band infrared radiation according to claim 2, automatic measurement system, characterized in that: said filter is a long-wave filter of a plurality of band-pass filter according to a different wavelength range arranged symmetrically composition turntable, filter wheel is driven by a rotation motor, C para each light path through only a bandpass filter.
  4. 4.根据权利要求2或3所述的多波段红外辐射自动测量系统,其特征在于:所述B段光路的光轴与旋转反射镜镜面呈45度角。 4. The automatic measurement system multiband infrared radiation according to claim 2 or claim 3, wherein: said optical path section B and the rotation axis of the mirror specular angle of 45 degrees.
  5. 5.根据权利要求4所述的多波段红外辐射自动测量系统,其特征在于:所述运动部分封装作为扫描反射组件,光路上自中继镜后整体密封,并充氮保护,用固体干燥剂保持内部光学系统和探测器干燥。 Multi-band infrared radiation according to claim 4, said automatic measuring system, wherein: said moving part of the package as a scanning reflector assembly, since the optical path of the relay lens integrally sealed, and nitrogen blanketing with solid desiccants maintaining the internal optical system and the detector dried.
  6. 6.根据权利要求5所述的多波段红外辐射自动测量系统,其特征在于:分别位于常温黑体辐射区和控温黑体辐射区的两个黑体源为常温面源黑体和控温面源黑体,扫描反射组件与两个黑体源的辐射出射口之间的距离皆不大于10mm。 6. The multi-band infrared radiation according to claim 5, wherein the automatic measurement system, characterized in that: two blackbody sources are located at room temperature and blackbody radiation temperature region of the black body radiation region and a normal temperature area blackbody area blackbody temperature, radiation scanning reflector assembly with two blackbody sources of the distance between the exit port neither than 10mm.
  7. 7.根据权利要求6所述的多波段红外辐射自动测量系统,其特征在于:所述长波聚焦透镜的耦合参数与长波探测器保持一致,所述中波聚焦透镜的耦合参数与中波制冷探测器保持一致。 Multi-band infrared radiation according to claim 6, the automatic measurement system, characterized in that: said coupling parameters and LW long wave detector focusing lens keeping the focus lens coupled wave parameters and wave detection refrigeration It is consistent.
  8. 8.根据权利要求7所述的多波段红外辐射自动测量系统,其特征在于:所述保护窗外表面镀类金刚石高效红外增透膜,旋转反射镜表面镀银外反膜并外加介质保护。 Multi-band infrared radiation according to claim 7, automatic measurement system, characterized in that: said protective window plated diamond efficient infrared antireflection film, a rotating mirror outer surface of the silver reflection film is applied and medium protection.
  9. 9.根据权利要求8所述的多波段红外辐射自动测量系统,其特征在于:所述长波探测器为热释电探测器,中波制冷探测器为中波HgCdTe探测器。 Multi-band infrared radiation according to claim 8, said automatic measuring system, wherein: the long-wave detector is a pyroelectric detector, the detector for the cooling medium wave AM HgCdTe detector.
CN2010201384839U 2010-03-23 2010-03-23 Multiband infrared radiation automatic measuring system CN201716111U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104390931A (en) * 2014-11-07 2015-03-04 西安应用光学研究所 Device and method for measuring spectral emissivity of infrared sample material at high precision
CN105308657A (en) * 2013-04-23 2016-02-03 卡纳里连接公司 Security and/or monitoring devices and systems
CN107124600A (en) * 2017-04-26 2017-09-01 北京环境特性研究所 DMD-based infrared projection device and quantitative output method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105308657A (en) * 2013-04-23 2016-02-03 卡纳里连接公司 Security and/or monitoring devices and systems
US10083599B2 (en) 2013-04-23 2018-09-25 Canary Connect, Inc. Remote user interface and display for events for a monitored location
US10304319B2 (en) 2013-04-23 2019-05-28 Canary Connect, Inc. Monitoring and security devices comprising multiple sensors
CN104390931A (en) * 2014-11-07 2015-03-04 西安应用光学研究所 Device and method for measuring spectral emissivity of infrared sample material at high precision
CN107124600A (en) * 2017-04-26 2017-09-01 北京环境特性研究所 DMD-based infrared projection device and quantitative output method thereof

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