CN110672655A - In-situ detection system and method for thermal radiation performance - Google Patents
In-situ detection system and method for thermal radiation performance Download PDFInfo
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Abstract
The invention relates to a thermal radiation performance in-situ detection system in the technical field of thermal radiation performance measurement, which comprises a light source module, a light source calibration module, a control module, a sample room and a data processing module, wherein the light source calibration module is used for calibrating a light source; the light source module is used for providing a light source required by the irradiation experiment and the thermal radiation performance detection of a sample to be detected; the light source calibration module is used for comparing the thermal radiation performance parameters of the sample to be tested and the reference standard under the same condition; the sample chamber is used for carrying out performance test and data acquisition on a sample to be tested; the control module comprises a motion control unit and a data acquisition control unit; and the data processing module is used for acquiring the thermal radiation performance detection data acquired by the data acquisition control unit and processing the data through processing software to acquire the normal hemispherical reflectivity of the sample to be detected. The invention also provides an in-situ detection method for the thermal radiation performance. The invention can truly measure the influence of the space environment simulation on the heat radiation performance of the sample.
Description
Technical Field
The invention relates to the technical field of thermal radiation performance measurement, in particular to an in-situ detection system and method for thermal radiation performance measurement.
Background
After the space thermal control product is irradiated by solar ultraviolet and space particles in the space, the thermal performance of the space thermal control product is degraded to different degrees, and if the performance degradation is serious, the temperature control of a spacecraft is failed. Therefore, the thermal radiation performance of the thermal control product before and after space irradiation needs to be detected, and the influence of the space radiation environment on the material performance is analyzed through comparison of test results.
In the conventional performance test, after a space radiation simulation test is performed, a sample is moved out of the test equipment and is placed into the performance test equipment for performance test. However, this method changes the environment in which the sample is tested and the transfer through a non-vacuum environment can cause changes in the sample properties. Through in-situ test of sample performance, the accuracy of sample performance test is ensured, and the problems of bleaching, recovery and the like of the tested sample after being moved out of the vacuum environment are prevented.
The Chinese patent publication No. CN105548239B discloses a thermal protection performance tester, which comprises a frame, a heating device arranged on the frame, a thermal insulation protection plate positioned above the heating device, and a sample frame plate positioned above the thermal insulation protection plate, wherein the thermal insulation protection plate and the sample frame plate are rotatably or translationally arranged on the frame, the center of the sample frame plate is provided with a sample fire passing through hole, the area of the thermal insulation protection plate is larger than that of the sample frame plate, the heating device comprises a fire head arranged towards the direction of the sample fire passing through hole, and a heat dissipation device is arranged in the thermal insulation protection plate. The sample frame plate is provided with a heat insulation pressure sensing plate for pressing a sample and sensing the temperature of the sample, and the heat insulation protection plate is provided with a temperature sensing part. The temperature-rise measuring device is simple and compact in structure, comprehensive in measured data, various in measuring function, accurate in measured data, high in measured data reference value, high in temperature-rise controllability, fast and stable, low in energy consumption and more energy-saving. The method is not suitable for the environment of the satellite space sample radiation detection.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an in-situ detection system and method for measuring the thermal radiation performance.
The invention provides a thermal radiation performance in-situ detection system which comprises a light source module, a light source calibration module, a control module, a sample chamber and a data processing module, wherein the light source calibration module is used for calibrating the light source;
the light source module provides a light source required by the irradiation experiment and the thermal radiation performance detection of the sample to be detected;
the light source calibration module is used for comparing the thermal radiation performance parameters of the sample to be tested and the reference standard under the same condition;
the sample chamber comprises a sample frame, a movement mechanism and a detection and acquisition unit, and the sample chamber is used for carrying out performance test and data acquisition on a sample to be tested;
the control module comprises a motion control unit and a data acquisition control unit, the motion control unit can control the motion mechanism to transfer a sample to be detected, and the data acquisition control unit controls the detection acquisition unit to acquire data for detecting the thermal radiation performance of the sample to be detected;
and the data processing module acquires the thermal radiation performance detection data acquired by the data acquisition control unit and processes the data through processing software to acquire the normal hemispherical reflectivity of the sample to be detected.
In some embodiments, the sample rack realizes station conversion of samples to be measured through the moving mechanism, the stations include a loading and unloading station, an irradiation station and a thermal radiation performance measuring station, and the sample rack can also realize switching of different samples through self rotation.
In some embodiments, the moving mechanism is a multi-axis serial moving mechanism, the moving mechanism drives the sample rack to move and change between the loading and unloading station and the irradiation station through linear motion, and drives the sample rack to switch between the irradiation station and the thermal radiation performance measuring station through rotation of a horizontal shaft.
In some embodiments, the light source calibration module comprises a diffuse reflection standard reference plate and a reflector assembly.
In some embodiments, the detection and collection unit includes an integrating sphere detection unit, a detector and a spectrometer, the integrating sphere detection unit is configured to detect thermal radiation performance of a sample to be detected, the sample to be detected and a diffuse reflection standard reference plate are connected to the outside of an integrating sphere of the integrating sphere detection unit at intervals, and the detector and the spectrometer collect thermal radiation performance test data of the sample to be detected.
In some embodiments, the light source module includes a composite light source, a lens assembly, a modulation fan, a monochromator, and a connection bellows, where test light emitted from the composite light source is focused by the lens assembly, the focused light is modulated by the modulation fan and then enters the monochromator, and after the light is split by the monochromator, the light source irradiates a sample to be measured on the integrating sphere through an optical window via the connection bellows, and meanwhile, the light source also irradiates a diffuse reflection standard reference plate on the integrating sphere through an optical window via a reflector assembly.
In some embodiments, the composite light source is ultraviolet-visible-infrared composite light, and the wavelength band of the composite light source is 200nm-2800 nm.
The invention also provides an in-situ detection method for the thermal radiation performance, which adopts the in-situ detection system for the thermal radiation performance and comprises the following steps:
irradiation experiment steps: moving a sample to be tested from the loading and unloading station to the irradiation station through the movement mechanism, and selecting a composite light source with an adaptive incident waveband to perform an irradiation experiment on the sample to be tested;
station switching: after the irradiation experiment is finished, moving the sample to be measured from the irradiation station to a thermal radiation performance measuring station through the movement mechanism;
and (3) measuring the thermal radiation performance: the test light emitted by the composite light source is focused by the lens component, the focused light enters the monochromator after being modulated by the modulation fan, after being split by the monochromator, the light source irradiates a sample to be tested on the integrating sphere through the optical window by the connecting corrugated pipe, and meanwhile, the light source also irradiates a diffuse reflection standard reference plate on the integrating sphere through the optical window by the reflector component;
a data acquisition step: the data acquisition control unit is used for realizing the acquisition of the detection data of the thermal radiation performance of the sample to be detected by controlling the detection acquisition unit;
and (3) data processing: the data processing module is used for processing collected thermal radiation performance detection data of the sample to be detected to obtain the normal hemispherical reflectivity of the sample to be detected.
In some embodiments, the moving mechanism is a multi-axis serial moving mechanism, the multi-axis serial moving mechanism drives the sample frame to move and change between the loading and unloading station and the irradiation station through linear motion, and drives the sample frame to switch between the irradiation station and the thermal radiation performance measuring station through rotation of a horizontal shaft.
In some embodiments, the detection and collection unit includes an integrating sphere detection unit, a detector and a spectrometer, the integrating sphere detection unit is configured to detect thermal radiation performance of a sample to be detected, the sample to be detected and a diffuse reflection standard reference plate are connected to the outside of an integrating sphere of the integrating sphere detection unit at intervals, and the detector and the spectrometer collect thermal radiation performance test data of the sample to be detected.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention is used for the in-situ measurement of the thermal radiation performance of the sample in special environments (such as vacuum environment, high-pressure environment and the like), can automatically switch the loading and unloading of the sample, avoids the state change of the sample in the transfer process, and can truly measure the influence of the spatial environment simulation on the thermal radiation performance of the sample.
2. The invention has the functions of in-situ measurement of the thermal radiation of material-level and device-level samples, multi-sample test and automatic switching of the loading and unloading of the samples.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic view of the detection process of the present invention;
FIG. 3 is a schematic view of a normal hemispherical reflectivity measurement;
FIG. 4 is a schematic view of a multi-axis tandem motion mechanism;
FIG. 5 is a schematic diagram of an electrical scheme of the in situ detection system.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
The embodiment provides an in-situ detection system for thermal radiation performance, which comprises a light source module, a light source calibration module, a control module, a sample chamber and a data processing module;
the light source module provides a light source required by a sample to be detected for an irradiation experiment and thermal radiation performance detection, wherein the light source module comprises a composite light source, a lens component, a modulation fan, a monochromator and a connecting corrugated pipe, preferably, the light source in the light source module is an ultraviolet-visible-infrared composite light source, and the wave band of the composite light source is 200nm-2800 nm;
the light source calibration module is used for comparing thermal radiation performance parameters of a sample to be tested and a reference standard under the same condition, and comprises a diffuse reflection standard reference plate and a reflector component.
The sample chamber comprises a sample frame, a motion mechanism and a detection and acquisition unit, the sample chamber is used for carrying out performance test and data acquisition on a sample to be tested, wherein,
the sample frame is connected with the rotating electrical machines, still is provided with the sample tray on the sample frame, realizes the rotation of self through the rotating electrical machines to can reach the function of switching different samples, the sample frame is connected on motion's the horizontal axis simultaneously, and motion is multiaxis serial-type motion, and the sample frame passes through motion realizes the station conversion of the sample that awaits measuring, and its station includes loading and unloading station, irradiation station and thermal radiation performance measurement station, promptly:
the movement mechanism drives the sample frame to move and change between the loading and unloading station and the irradiation station through linear movement of the horizontal shaft, and drives the sample frame to switch between the irradiation station and the thermal radiation performance measurement station through rotation of the horizontal shaft.
In addition, the indoor detection collection unit of sample includes integrating sphere detecting element, detector and spectrum appearance, integrating sphere detecting element is used for carrying out thermal radiation performance's detection to the sample that awaits measuring, and the sample that awaits measuring with diffuse reflection standard reference board interval connect in outside integrating sphere of integrating sphere detecting element, there is certain contained angle between sample and the diffuse reflection standard reference board that awaits measuring, and its contained angle is preferred 90, can practice thrift the use amount of speculum in the reflector component, the detector with the spectrum appearance carries out thermal radiation performance test data's collection to the sample that awaits measuring, and wherein the process that carries out thermal radiation performance to the sample that awaits measuring does:
the testing light emitted by the composite light source is focused by the lens assembly, the focused light enters the monochromator after being modulated by the modulation fan, after being split by the monochromator, the light source irradiates a sample to be tested on the integrating sphere through the optical window by the connecting corrugated pipe, and simultaneously the light source irradiates a diffuse reflection standard reference plate on the integrating sphere through the optical window by the reflector assembly, wherein the light source split by the monochromator can reach the sample to be tested firstly, then the light source is reflected to the diffuse reflection standard reference plate by the reflector assembly, and a photoelectric signal generated by a reference light path signal, a photoelectric signal generated by a reflection signal and a diffuse reflection photoelectric signal of the sample collected by the integrating sphere are collected and processed by the detector and the spectrometer respectively to obtain a photoelectric signal generated by scattering of the sample to be tested.
The control module comprises a motion control unit and a data acquisition control unit, the motion control unit can control the motion mechanism to transfer a sample to be detected, and the data acquisition control unit controls the detection acquisition unit to acquire data for detecting the thermal radiation performance of the sample to be detected;
and the data processing module acquires the thermal radiation performance detection data acquired by the data acquisition control unit and processes the data through processing software to acquire the normal hemispherical reflectivity of the sample to be detected.
Specifically, the following figures are used to illustrate the details:
as shown in fig. 1, the present embodiment provides an in-situ detection apparatus for measuring thermal radiation performance, which has an in-situ measurement function in a wavelength band of 200nm to 2800nm, a multi-sample test function, and is capable of automatically switching the loading and unloading of samples. The device comprises a light source, a light source calibration system, a sample chamber, a motion and data acquisition control component, in-situ measurement control software and the like.
The light source part comprises an ultraviolet-visible-infrared composite light source, a modulation fan assembly, a monochromator and a connecting corrugated pipe;
the light source calibration system comprises a diffuse reflection standard reference plate and a reflector component;
the sample chamber comprises an integrating sphere detection unit, a PMT/PbS detector, a spectrometer, a sample frame, a guide rail and a multi-shaft serial motion mechanism;
the motion and data acquisition control assembly comprises a motion control assembly, a data acquisition unit and a test environment detection and system stability monitoring acquisition unit;
the in-situ measurement control software includes in-situ measurement system control data processing software.
As shown in fig. 4, the multi-axis tandem type movement mechanism is used as a four-dimensional vacuum movement mechanism for switching a sample loading and unloading station, an irradiation station and a performance comparison measurement station, and mainly comprises a stepping motor 1 for vacuum, a sample holder 2, a slider 3, an X-direction slide rail 4, a Y-direction slide rail 5 and a Z-direction slide rail 6, and the movement mechanism adopts a special stepping motor and can be used in environments of vacuum, high temperature, low temperature and the like. The movement mechanism can realize four-dimensional movement according to the experimental requirement, namely X, Y direction horizontal movement and two-direction rotation movement, and the Z direction height can be manually adjusted.
As shown in fig. 2-3, when the present invention measures the thermal radiation performance of a sample, firstly, according to the test requirements, the ultraviolet-visible-infrared composite light source selects the incident light wave band, the multi-axis tandem type motion mechanism moves the sample from the loading and unloading station to the irradiation station, and the irradiation device performs a space irradiation simulation test on the sample. After an irradiation test, a movement mechanism moves a sample from an irradiation station to a thermal radiation performance measuring station, test light emitted by a composite light source passes through a lens component, focused light is modulated through a modulation fan, modulated light enters a monochromator, the light source irradiates a sample to be measured on an integrating sphere through an optical window through a connecting corrugated pipe, and simultaneously the light source also irradiates a diffuse reflection standard reference plate on the integrating sphere through an optical window through a reflector component, wherein the light source after light splitting through the monochromator can reach the sample to be measured first and then reflects the light source onto the diffuse reflection standard reference plate through the reflector component, and a photoelectric signal generated by a reference light path signal, a photoelectric signal generated by a reflection signal and a diffuse reflection electric signal of the sample collected by the integrating sphere are collected and processed through a detector and a spectrometer respectively to obtain a photoelectric signal generated by scattering of the sample to be measured, and carrying out data processing through in-situ measurement control software to obtain the normal hemispherical reflectivity of the sample.
As shown in fig. 5, the electronic scheme of the in-situ optical measurement system is schematically illustrated, and the operation principle and process thereof are briefly described as follows:
the system controls the stepping motor driving and controlling unit through the computer terminal, and completes the position change of the composite light source, the scanning mechanism, the optical filter switching device and the like through the driving and controlling circuit. The light source switching circuit, the detector scanning circuit, the sample stage rotating circuit and the like are all composed of a stepping motor driving circuit, a position signal acquisition circuit and a control circuit;
the system realizes the position change of the sample rack through a high-precision A/D conversion unit and a rotation driving and control circuit;
the system has 3 pairs of weak signal acquisition processing circuits, the first pair is a reference light path signal acquisition processing unit which acquires signals generated by a reference light path, and the signals are amplified and processed to form reference signals; the second path is a photoelectric signal generated by the reflected signal, and the photoelectric signal generated by the detector is amplified, collected and processed to form a photoelectric signal; and the third path receives a photoelectric signal generated by a detector on the integrating sphere, the integrating sphere collects a signal of the sample, and the photoelectric signal generated by scattering of the sample to be detected is obtained through collection and amplification processing.
Example 2
The embodiment further provides an in-situ detection method for measuring thermal radiation performance, and the in-situ detection system for measuring thermal radiation performance described in embodiment 1 comprises the following steps:
irradiation experiment steps: moving a sample to be tested from the loading and unloading station to the irradiation station through the movement mechanism, and selecting a composite light source with an adaptive incident waveband to perform an irradiation experiment on the sample to be tested;
station switching: after the irradiation experiment is finished, moving the sample to be measured from the irradiation station to a thermal radiation performance measuring station through the movement mechanism;
and (3) measuring the thermal radiation performance: the test light emitted by the composite light source is focused by the lens component, the focused light enters the monochromator after being modulated by the modulation fan, after being split by the monochromator, the light source irradiates a sample to be tested on the integrating sphere through the optical window by the connecting corrugated pipe, and meanwhile, the light source also irradiates a diffuse reflection standard reference plate on the integrating sphere through the optical window by the reflector component;
a data acquisition step: the data acquisition control unit is used for realizing the acquisition of the detection data of the thermal radiation performance of the sample to be detected by controlling the detection acquisition unit;
and (3) data processing: the data processing module is used for processing collected thermal radiation performance detection data of the sample to be detected to obtain the normal hemispherical reflectivity of the sample to be detected.
The specific implementation of the steps of the method is as follows:
firstly, according to test requirements, an ultraviolet-visible-infrared composite light source selects an incident light wave band, a multi-shaft tandem type movement mechanism moves a sample from a loading and unloading station to an irradiation station, and a space irradiation simulation test is carried out on the sample through an irradiation device;
after an irradiation test, a sample is moved to a thermal radiation performance measuring station from an irradiation station by a movement mechanism, test light emitted by a composite light source passes through a lens component, focused light is modulated by a modulation fan, modulated light enters a monochromator, the light source irradiates the sample to be measured on an integrating sphere through an optical window by a connecting corrugated pipe, and the light source irradiates a diffuse reflection standard reference plate on the integrating sphere through an optical window by a reflector component;
and then, acquiring and processing a photoelectric signal generated by a reference light path signal, a photoelectric signal generated by a reflection signal and a diffuse reflection photoelectric signal of the sample collected by the integrating sphere through a detector and a spectrometer to obtain a photoelectric signal generated by scattering of the sample to be measured, and performing data processing through in-situ measurement control software to obtain the normal hemispherical reflectivity of the sample.
The method disclosed in this embodiment 2 uses the system for in-situ detection of thermal radiation performance measurement described in embodiment 1, and the modules, mechanisms, and operation capabilities included in the system are described in embodiment 1, and will not be described herein again.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (10)
1. A thermal radiation performance in-situ detection system is characterized by comprising a light source module, a light source calibration module, a control module, a sample chamber and a data processing module;
the light source module provides a light source required by the irradiation experiment and the thermal radiation performance detection of the sample to be detected;
the light source calibration module is used for comparing the thermal radiation performance parameters of the sample to be tested and the reference standard under the same condition;
the sample chamber comprises a sample frame, a movement mechanism and a detection and acquisition unit, and the sample chamber is used for carrying out performance test and data acquisition on a sample to be tested;
the control module comprises a motion control unit and a data acquisition control unit, the motion control unit can control the motion mechanism to transfer a sample to be detected, and the data acquisition control unit controls the detection acquisition unit to acquire data for detecting the thermal radiation performance of the sample to be detected;
and the data processing module acquires the thermal radiation performance detection data acquired by the data acquisition control unit and processes the data through processing software to acquire the normal hemispherical reflectivity of the sample to be detected.
2. The in-situ thermal radiation performance detection system as claimed in claim 1, wherein the sample holder realizes station conversion of samples to be detected through the moving mechanism, the stations include a loading and unloading station, an irradiation station and a thermal radiation performance measuring station, and the sample holder can realize switching of different samples through self rotation.
3. The in-situ thermal radiation performance detection system as claimed in claim 2, wherein the moving mechanism is a multi-axis serial moving mechanism, the moving mechanism drives the sample rack to move and change between the loading and unloading station and the irradiation station through linear movement, and drives the sample rack to switch between the irradiation station and the thermal radiation performance measurement station through rotation of a horizontal shaft.
4. The in situ radiant heat performance detection system as claimed in claim 1, wherein the light source calibration module includes a diffuse reflective standard reference plate and a reflector assembly.
5. The in-situ thermal radiation performance detection system according to claim 4, wherein the detection collection unit comprises an integrating sphere detection unit, a detector and a spectrometer, the integrating sphere detection unit is used for detecting thermal radiation performance of a sample to be detected, the sample to be detected and the diffuse reflection standard reference plate are connected to the outside of the integrating sphere detection unit at intervals, and the detector and the spectrometer are used for collecting thermal radiation performance test data of the sample to be detected.
6. The in-situ heat radiation performance detection system according to claim 5, wherein the light source module comprises a composite light source, a lens assembly, a modulation fan, a monochromator and a connecting corrugated pipe, the test light emitted by the composite light source is focused by the lens assembly, the focused light enters the monochromator after being modulated by the modulation fan, after being split by the monochromator, the light source irradiates a sample to be tested on the integrating sphere through an optical window via the connecting corrugated pipe, and meanwhile, the light source also irradiates a diffuse reflection standard reference plate on the integrating sphere through the optical window via a reflector assembly.
7. The in-situ thermal radiation performance detection system as claimed in claim 6, wherein the composite light source is ultraviolet-visible-infrared composite light, and the wavelength band of the composite light source is 200nm-2800 nm.
8. An in-situ measuring method for thermal radiation performance, characterized in that the in-situ measuring system for thermal radiation performance measurement according to any one of claims 1 to 7 is used, comprising the steps of:
irradiation experiment steps: moving a sample to be tested from the loading and unloading station to the irradiation station through the movement mechanism, and selecting a composite light source with an adaptive incident waveband to perform an irradiation experiment on the sample to be tested;
station switching: after the irradiation experiment is finished, moving the sample to be measured from the irradiation station to a thermal radiation performance measuring station through the movement mechanism;
and (3) measuring the thermal radiation performance: the test light emitted by the composite light source is focused by the lens component, the focused light enters the monochromator after being modulated by the modulation fan, after being split by the monochromator, the light source irradiates a sample to be tested on the integrating sphere through the optical window by the connecting corrugated pipe, and meanwhile, the light source also irradiates a diffuse reflection standard reference plate on the integrating sphere through the optical window by the reflector component;
a data acquisition step: the data acquisition control unit is used for realizing the acquisition of the detection data of the thermal radiation performance of the sample to be detected by controlling the detection acquisition unit;
and (3) data processing: the data processing module is used for processing collected thermal radiation performance detection data of the sample to be detected to obtain the normal hemispherical reflectivity of the sample to be detected.
9. The in-situ detection method for measuring heat radiation performance according to claim 8, wherein the moving mechanism is a multi-axis tandem moving mechanism, the multi-axis tandem moving mechanism drives the sample rack to move and change between the loading and unloading station and the irradiation station through linear motion, and drives the sample rack to switch between the irradiation station and the heat radiation performance measuring station through rotation of a horizontal shaft.
10. The in-situ detection method for measuring the thermal radiation performance of the thermal radiation performance sensor according to claim 8, wherein the detection acquisition unit comprises an integrating sphere detection unit, a detector and a spectrometer, the integrating sphere detection unit is used for detecting the thermal radiation performance of the sample to be detected, the sample to be detected and the diffuse reflection standard reference plate are connected to the outside of the integrating sphere detection unit at intervals, and the detector and the spectrometer are used for acquiring the thermal radiation performance test data of the sample to be detected.
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| CN112229809A (en) * | 2020-10-15 | 2021-01-15 | 北京卫星环境工程研究所 | Device and method for in-situ measurement and control of thermal object performance based on space environment effect test |
| CN113063732A (en) * | 2021-03-24 | 2021-07-02 | 北京卫星环境工程研究所 | Solar absorption ratio in-situ detection device and method in vacuum low-temperature environment |
| CN113933496A (en) * | 2021-07-19 | 2022-01-14 | 安徽桐康医疗科技股份有限公司 | A calibrating device for fluorescence immunoassay quantitative analysis appearance |
| CN114858689A (en) * | 2022-03-21 | 2022-08-05 | 哈尔滨工业大学 | In-situ and semi-in-situ test shielding device for space comprehensive environment and test shielding method thereof |
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