175 results about "Radiation temperature" patented technology

The invention discloses a cable channel heating defect checking method based on a multi-legged inspection robot, and relates to the technical field of radiation temperature measurement, and the method comprises the steps: controlling the multi-legged inspection robot to autonomously advance in a cable channel, and collecting multi-source sensing data; constructing spatial-temporal feature representation of the cable channel based on the multi-source sensing data, and constructing a multi-modal graph neural network model to perform heating anomaly detection to obtain an initial detection result; when a suspected defect exists in the initial detection result, a multi-legged inspection robot is scheduled, a reinspection path and a detection mode are selected according to a reinforcement learning strategy, and a multi-modal graph neural network model is used for performing close-range reinspection on the position of the suspected defect; and performing fusion analysis on the initial detection result and the reinspection result, and outputting positioning information, defect type and confidence of the heating defect of the cable channel. According to the method, high-sensitivity identification of potential heating anomalies is realized, the missing report rate is remarkably reduced, the reinspection efficiency is improved, and repetition and omission are effectively avoided.

The invention provides a multispectral radiation temperature measurement method and system, and belongs to the field of signal acquisition and processing in an infrared radiation temperature measurement technology. The problems of poor inversion precision and applicability of multispectral radiation temperature measurement are solved. The multispectral radiation temperature measurement method comprises the following steps of: measuring radiation information of the surface of a to-be-measured target by using a multi-wavelength pyrometer; the beam splitting system obtains radiation information of different spectrum channels; photoelectric conversion: converting the optical signal into an electric signal; constructing a target equation and a constraint optimization condition according to the brightness temperature model; carrying out multispectral data processing by utilizing an improved multi-population mixed pigeon inspired optimization algorithm; and the final real temperature and emissivity values are obtained. The device is mainly used for multispectral radiation temperature measurement.

The invention provides a radiation temperature measurement device and method based on dynamic calibration, and relates to the technical field of radiation temperature measurement. The device is used for measuring temperature information of a hot end component and comprises a first lens group, a temperature measuring probe, a second lens group, an optical switch, an optical filter, a photoelectric detector, a pre-amplifier, an acquisition monitoring system and a controller, after passing through the optical filter, a corresponding temperature measurement characteristic wavelength is obtained; the photoelectric detector is of a thermoelectric refrigeration type, the temperature measurement characteristic wavelength is incident to the photoelectric detector for detection to obtain a corresponding electric signal, the electric signal is amplified into a collectable voltage signal through the pre-amplifier, and the collection monitoring system carries out collection and post-processing to obtain temperature information of the hot end component; the optical switch is arranged at the front end of the optical filter and is controlled to be turned on or turned off through the controller, and the controller is controlled by the collecting and monitoring system.

A vehicle includes a system configured to supply air to a cabin of a vehicle at a target discharge temperature. One or more solar sensors configured to sense a solar radiation on the cabin and one or more temperature sensors configured to sense air within the cabin. A controller is configured to receive a user set temperature, obtain a solar heat load from one or more outputs of the one or more solar sensors, and obtain a feedback temperature from one or more outputs of the one or more temperature sensors. The controller is further configured to determine a radiation temperature corresponding to radiative heat transfer into the cabin, the radiation temperature being a function of the feedback temperature and the solar heat load. The controller may then set the target discharge temperature according to the user set temperature, the feedback temperature, and the radiation temperature.

The invention relates to the technical field of infrared measurement, in particular to an intelligent calibration method and system for temperature measurement of an infrared sensor, and the method comprises the steps: enabling an infrared camera to align with a blackbody radiation source to form a calibration scene, collecting the output of a plurality of groups of pixels under different radiation temperatures and different internal part temperature states, fitting a temperature signal response model containing an exponential term and a bias term according to least square to obtain amplitude, exponential, temperature offset and output bias parameters; during measurement, a thermal image containing a target object and two reference blackbody sources is obtained, and parameters such as emissivity, environment equivalent radiation temperature, transmission medium and optical transmission, camera temperature and the like are synchronously obtained; performing non-uniformity and offset correction and abnormal pixel replacement on the thermal image; the initial temperature is inverted based on radiation transfer decomposition and compensation of internal radiation of the camera; and carrying out statistical averaging on the temperatures of the two blackbody reference regions to obtain a double-point correction coefficient, and outputting correction temperature or temperature distribution. According to the method, the problems that temperature inversion model parameters are difficult to adaptively update along with working conditions and on-site temperature measurement errors are difficult to effectively suppress when an existing infrared sensor array is in a long-distance non-contact temperature measurement scene can be solved.

The invention discloses a biological tissue internal temperature microwave chromatography method and system, and belongs to the technical field of microwave measurement. The problem that the internal temperature of the biological tissue cannot be accurately obtained by adopting a microwave radiation temperature measurement technology nowadays is solved. The method comprises the following steps: acquiring environmental thermal radiation rates under different environmental conditions, and acquiring temperature distribution data of a human tissue profile to be subjected to temperature measurement along with depth change under different environmental conditions by utilizing a real three-dimensional anatomical model, a heat conduction equation and a thermal radiation equation of the human tissue to be subjected to temperature measurement; calculating dielectric constants of the human tissue to be subjected to temperature measurement under different frequencies, and obtaining radiation brightness temperature data of different frequencies under different environmental conditions by combining the temperature distribution data and a real three-dimensional anatomical model of the human tissue to be subjected to temperature measurement; constructing a brightness temperature-temperature conversion matrix by adopting a least square method; and acquiring brightness temperature data of different frequencies of human tissue to be subjected to temperature measurement, substituting the brightness temperature data into the brightness temperature-temperature conversion matrix, and performing inversion to obtain temperatures of different depths of the human tissue to be subjected to temperature measurement. The method is suitable for temperature measurement.

The invention discloses a boiler furnace three-dimensional combustion temperature field reconstruction method and system, and the method comprises the steps: S1, multi-mode sensing network deployment, S2, time-space synchronization data collection, S3, sound wave flying time extraction and acoustic modeling, S4, flame image processing and radiation temperature conversion, S5, three-dimensional temperature initial field generation, and S6, multi-mode joint objective function construction. S7, carrying out regularization constraint iteration solution; and S8, carrying out three-dimensional temperature field visualization output. According to the method, high penetrability and sensitivity of sound waves to medium temperature and rich radiation information contained in flame images are fully utilized, and the precision and spatial resolution of temperature field reconstruction are remarkably improved by establishing a joint objective function and performing collaborative optimization. Meanwhile, a regularization method and an adaptive filtering technology are introduced, interference caused by measurement noise and uncertain problems is effectively suppressed, and the stability and robustness of the reconstruction process are enhanced.

To solve the problem of a radiation pyrometer that its measurable temperature range is limited because the measurable radiance range of a radiation temperature measurement sensor for measuring the radiance of radiant light is limited.MEANS FOR SOLVING THE PROBLEM: Provided is a radiant light temperature measuring device that uses a liquid crystal shutter and / or a rotatable polarizing plate in order to adjust the radiant flux density of radiant light radiated from a temperature measurement object so as to increase or decrease at a discretionary ratio, selects a conversion function held in correspondence to a ratio at which radiant flux density is adjusted, and calculates a temperature on the basis of the selected conversion function and the measured radiance.SELECTED DRAWING: Figure 1

The invention discloses a portable urban thermal environment intelligent sensing method and equipment based on AR, and the method comprises the steps: collecting a panoramic RGB street scene image of a user visual angle through AR glasses, and synchronously obtaining the time, geographic position and meteorological parameters; mapping the RGB image and the environmental parameters into a panoramic infrared thermal image by using a generative adversarial network, and obtaining the radiation temperature of each pixel; projecting the panoramic heat map to a unit spherical surface taking a user as a center, calculating a long-wave radiation flux through spherical surface angle integration, and calculating a short-wave radiation flux based on a solar radiation model by combining a solar elevation angle and the like; and fusing the total radiation amount to calculate the average radiation temperature, and finally superposing the heat map and / or the average radiation temperature to a real or virtual environment through AR glasses or an intelligent terminal to realize spatialization thermal load visualization.

The invention provides an injection mold temperature field regulation and control method and device based on multi-sensor fusion, and the method comprises the steps: recognizing a non-uniform region based on a surface radiation temperature distribution image, discrete point temperature data, an instantaneous heat flow direction and heat flow intensity information; based on each non-uniformity area and the heating and cooling unit adjacent to the non-uniformity area, constructing a space mapping relation, and based on the space mapping relation, the instantaneous heat flow direction and the heat flow intensity information, generating a heat flow path guide instruction; triggering a corresponding heating and cooling unit to execute alternate heating and cooling operation according to a preset phase difference based on the heat flow path guide instruction, so that the heat flow directionally migrates in the non-uniform region along a specified path; and monitoring that the temperature gradient change trend of each non-uniform area tends to be uniform based on a dynamic heat balance state formed by the heat flow after directional migration in the mold, and entering a steady-state maintenance mode. According to the invention, high-precision sensing and dynamic cooperative regulation and control of the global temperature field of the injection mold are realized.

The invention relates to the technical field of semiconductor devices, discloses an infrared thermoelectric sensing chip, a radiation temperature measurement device and a design method of an infrared hot end sensing chip, and is used for solving the technical problems that an infrared thermoelectric sensing chip in the prior art is poor in temperature measurement effect, is easily influenced by interference signals and is relatively low in detection precision. The infrared thermoelectric sensing chip comprises a supporting layer arranged above a substrate layer; a thermopile unit disposed over the support layer; the thermopile unit comprises a couple layer composed of a plurality of couple strips, a reflecting layer covers one end of the couple layer to form a cold end of the thermopile unit, and the other end of the couple layer forms a hot end of the thermopile unit; and the hot end area size of the galvanic couple layer is greater than or equal to the cold end area size of the galvanic couple layer. According to the invention, the temperature measurement effect of the infrared thermoelectric sensing chip is improved, the influence of interference signals on temperature detection is reduced, and the temperature detection precision is improved.

The invention relates to a preparation method of a flexible film for dynamically adjusting infrared emissivity, and belongs to the technical field of dynamic adjustment of infrared radiation characteristics. The preparation method comprises the following operation steps: (1) uniformly mixing the basic component A and the reaction component B at room temperature; (2) defoaming the mixed solution, and pouring the mixed solution on a flat plate for self-leveling; (3) curing to obtain a polymer film; (4) stretching and fixing the polymer film, and sequentially plating an adhesion layer film and a functional layer film on the surface of the polymer film by using an electron beam evaporation coating technology; the functional layer film is made of a low-emissivity material; and (5) reducing the strain spontaneous release polymer film to an initial length to obtain the variable-emissivity flexible film with a wrinkle structure on the surface. The size and morphology change of the wrinkle structure changes the propagation path of the electromagnetic wave, and changes the area ratio of the high-emissivity material to the low-emissivity material, thereby changing the surface emissivity of the material. The infrared radiation temperature adjustment amplitude of the flexible film is 40 DEG C, and the flexible film has a good dynamic infrared camouflage function.

The invention relates to the technical field of unmanned aerial vehicle detection and security and protection, and discloses a low-altitude unmanned aerial vehicle dual-mode detection method based on micro Doppler radar and infrared thermal imaging. According to the method, a monitoring area is continuously scanned through a micro-Doppler radar, and when a suspected target with the signal intensity lower than a preset threshold value is recognized, an infrared thermal imaging device is triggered to be started. The infrared device directly adjusts the orientation and focuses to a specific area according to the target orientation and distance information provided by the radar, and obtains a high-resolution thermal imaging sequence. And then the radiation temperature distribution, the temperature gradient and the thermal profile morphological characteristics of the target are analyzed, and final judgment is completed. According to the invention, on-demand starting and rapid and accurate guiding of the infrared sensor are realized, the overall power consumption of the system is reduced, and the cooperative detection response speed and the identification precision of the rapid moving target are improved at the same time.

The invention discloses a temperature control method, device and equipment for semiconductor equipment and a storage medium, and relates to the technical field of temperature control, and the method comprises the steps: calculating the equivalent radiation temperature of the brightness of a slit cavity observation band based on the brightness of the slit cavity observation band in an edge infrared observation annular region of a rapid heat treatment furnace and the surface emissivity of a wafer; solving the equivalent temperature of the inner edge of the quartz clock cover; on the basis of the equivalent radiation temperature and the equivalent temperature of the inner edge of the quartz clock cover, net radiation heat incoming power transmitted to a wafer edge belt of the wafer by an annular slit radiation cavity in the rapid heat treatment furnace is calculated; and solving a target lamp area power replacement vector of the rapid heat treatment furnace based on the net radiation heat incoming power. According to the invention, the initiative and accuracy of wafer edge temperature control can be improved.

The invention discloses a friction stir welding real-time temperature field monitoring method and system and electronic equipment, and relates to the technical field of welding, the method comprises the steps that temperature field data of a friction stir welding area are acquired, a heat distribution characteristic value is calculated according to the temperature field data, and the temperature field data are acquired through an infrared temperature measurement system; comparing and analyzing the heat distribution characteristic value with a preset temperature window to generate a temperature field deviation index; triggering a parameter adjustment instruction according to the temperature field deviation index, wherein the parameter adjustment instruction comprises a shaft shoulder pressing amount correction value and a main shaft rotating speed compensation value; the radiation temperature of a black identification area on the periphery of the stirring head is collected in real time, the radiation temperature is dynamically matched with a reference temperature model, when the temperature deviation exceeds a preset deviation threshold value, multi-parameter cooperative control is started, and the reference temperature model is built based on obtained welding parameter information of friction stir welding; according to the method, the temperature monitoring and regulating effect on friction stir welding under the complex working condition is improved.

The invention relates to the technical field of radiation temperature measurement, and discloses a multispectral radiation temperature measurement temperature inversion method and device and a storage medium, and the method comprises the steps: constructing a radiation equation set according to N spectrum channels of a multi-wavelength pyrometer; substituting the exponential polynomial model into a radiation equation set, constructing an equation set under different wavelength combinations, and introducing a conjugate gradient least square algorithm to solve and obtain multiple groups of temperature predicted values; modeling the probability density distribution of the temperature prediction value by using an adaptive kernel density estimation method, screening the temperature values of which the normalized probability density is greater than or equal to a preset threshold value, and calculating a weighted average value as a temperature prediction result; according to the method, multiple iterations are carried out through cross validation, the temperature value with the minimum prediction error is finally selected as the final temperature prediction result, the normal spectral emissivity of the sample is inversed according to the final temperature prediction result, and the accuracy of the temperature result can be further improved while the calculation efficiency is guaranteed.

The invention relates to the technical field of infrared temperature measurement, and particularly discloses an infrared radiation temperature measurement system based on a point detector, which is used for solving the problems that in a 200-1200 DEG C heating furnace, infrared temperature measurement of an existing point detector cannot dynamically select a point detector and a filtering wave band along with the state of a hearth, accurate measurement, quick response and long-term calibration of a wide temperature region are difficult to meet at the same time, and the accuracy of temperature measurement is low. The device comprises an optical platform, an optical path switching unit is arranged on the optical platform, the optical path switching unit is connected with a plurality of optical inlets, the optical inlets are converged to a main optical axis, and a dynamic narrow-band filter and a point detector selection module are sequentially arranged on the main optical axis; through adaptive selection of the dynamic filtering wave band and the point detector, multi-spectrum fusion inversion and an online self-calibration mechanism, the temperature measurement error and drift are reduced under the conditions of wide temperature range, high flue gas interference and long-term continuous operation, and the precision, response speed and reliability of temperature measurement of the heating furnace are improved.

The invention discloses a boiler operation damage analysis method and system based on blackbody cavity radiation temperature measurement, and the method comprises the steps: receiving the heat radiation of a measured object in a boiler through a blackbody cavity of a blackbody cavity sensor to generate blackbody radiation, and obtaining the blackbody temperature through the blackbody radiation; calculating the reference response quantity of the blackbody cavity sensor; acquiring the actual response quantity of the blackbody cavity sensor; obtaining a relation coefficient between the emissivity and the wavelength of the measured object according to the actual response quantity and the reference response quantity, and calculating the actual temperature of the measured object according to the relation coefficient and the blackbody temperature; and based on the thermal elastic-plastic creep analysis mathematical model and the actual temperature of the measured object, analyzing and acquiring the damage condition of the measured object, and outputting the damage condition. According to the boiler operation damage analysis method provided by the invention, the accuracy of the obtained temperature of the measured object can be improved, so that the accuracy of the boiler internal damage condition output by the boiler operation damage analysis method can be improved.

The invention relates to a thermal exposure risk calculation method based on urban trip people flow and built environment dynamics, and the method comprises the steps: obtaining the average radiation temperature calculation input data of an urban environment, and calculating the average radiation temperature of the urban environment according to the average radiation temperature calculation input data; calculating general thermal climate index distribution of the urban environment based on the average radiation temperature, and determining a thermal exposure time period based on the general thermal climate index distribution so as to obtain thermal exposure duration according to the thermal exposure time period; and acquiring the hourly travel pedestrian flow of the urban environment, counting the accumulated travel pedestrian flow in the thermal exposure time period based on the hourly travel pedestrian flow and the thermal exposure time period, and calculating the thermal exposure risk according to the accumulated travel pedestrian flow. Therefore, the problems that in the related technology, due to dependence on static population data, the people flow dynamic state of urban day and night travel with high temporal-spatial resolution is difficult to reflect, and a thermal risk calculation result based on the static population data cannot meet the requirements of urban space environment exposure refined analysis and early warning are solved.

The invention discloses a multi-spectral radiation temperature measurement method and system for improving a quantum particle swarm, relates to the field of radiation temperature measurement and photoelectric signal processing, and solves the problems that when an existing standard PSO algorithm is applied to high-dimensional and nonlinear multi-spectral inversion, local extreme values are likely to be trapped, and the self-adaptive capacity is poor. Setting parameters, generating an initial particle position by using Tent chaotic mapping, calculating the particle fitness of an initialized population, updating initial individual optimum and global optimum, and calculating an average optimal particle position; updating the optimal particle position through a Levy flight mechanism; and repeating the steps, calculating the multispectral radiation temperature measurement target function value of the updated position, updating the initial individual optimum and the global optimum, and if an error threshold value or the maximum number of iterations is met, outputting the global optimum solution. The method is also suitable for the application field of inverting the real temperature and the spectral emissivity of the target from the multi-channel spectral radiation signals and the like.

The utility model provides a wafer temperature detection device in an ion implantation process, which comprises a process cavity structure, and the process cavity structure comprises a cavity wall composed of a cavity side wall, a cavity bottom and a cavity top. The wafer tray is used for carrying, cooling and heating the wafer during ion implantation; the Faraday cup is used for measuring the current magnitude, direction and waveform of the ion beam; the plasma electronic spraying device is used for neutralizing the ion beam; and the infrared radiation temperature detectors are respectively arranged on the top of the cavity and above the wafer tray, and on the side wall of the cavity and at the position of the ion beam path, and are used for detecting the temperature of the wafer. According to the utility model, the wafer temperature in the low-temperature and high-temperature ion implantation process can be directly detected, and the ion implantation process temperature can be accurately controlled.

The present application discloses a material emissivity measurement system and a material emissivity determination method, which relates to the emissivity measurement and radiation temperature measurement technology field, and solves the problem that the material emissivity obtained based on the measured temperature has low accuracy because the temperature of the sample surface will be changed by using a thermocouple to measure the sample temperature. The measurement system includes: a host computer, a temperature control device and a thermometer, the host computer is connected to the temperature control device and the thermometer, the temperature control device is controlled to heat the sample to be tested and the black body furnace to the set temperature, the thermometer is controlled to measure the first temperature, the second temperature, the third temperature and the fourth temperature of the surface of the sample to be tested when the shielding tube reaches different positions, and the host computer determines the target material emissivity of the sample to be tested according to the first temperature, the second temperature, the third temperature and the fourth temperature.

A chip transferring and bonding device, a chip bonding device and a chip transferring and bonding method are provided. The chip transferring and bonding device includes a signal control module, a chip carrying module, a chip transferring module and a laser light generation module. The chip transferring module is configured to transfer a plurality of chips to the circuit substrate. When the chips are transferred to the circuit substrate, the laser light generation module is configured to generate a laser beam, and the laser beam is focused at any position away from one of the chips to form a light focusing area and a heat radiation area away from the light focusing area. The soldering materials are allowed to be cured through a predetermined radiation temperature provided by the heat radiation area, thereby making each of the chips bonded on the circuit substrate through the soldering material.

The invention relates to the technical field of sugarcane spica monitoring, and discloses a sugarcane spica flowering intelligent monitoring system, which is characterized in that a hyperspectral image and an infrared image are acquired, the hyperspectral image and the infrared image are acquired and registered into a multi-source image data set, and a spica area binary mask image is segmented; extracting morphological structure characteristics, spectral reflection characteristics and thermal radiation characteristics, calculating a visibility index KJ, a wave band reflectivity BS and a radiation temperature value FP based on the extracted characteristics, calculating a determination value P, and comparing the determination value P with a hybridization threshold ZY; according to the method, the hyperspectral image and the infrared image of the sugarcane spica are collected, the hyperspectral image obtains the fine spectral reflection characteristics of the sugarcane spica so as to analyze the physiological state of the sugarcane spica, and the infrared image is used for assisting in obtaining the overall shape, contour and thermal radiation information of the spica, and especially, the image characteristics are enhanced in a weak light environment; therefore, the sugarcane spica area can be accurately identified, and the effective distinguishing between the spica and the background can be realized.

The invention provides a multiband intelligent radiation temperature control device, which realizes multiband intelligent radiation temperature control through innovative design, and is characterized in that a first micro-unit and a second micro-unit with different characteristic lengths are adopted in an optical functional layer, and according to an electromagnetic resonance theory, the first micro-unit with the long characteristic length is matched with a far infrared band wavelength, and the second micro-unit with the long characteristic length is matched with a far infrared band wavelength; the far infrared radiance can be modulated along with the change of the external temperature, and the second micro-unit with the short characteristic length is adaptive to a middle infrared band to realize corresponding radiance modulation; meanwhile, large-area temperature control uniformity is guaranteed through array arrangement of the modulation areas, and environment adaptability is enhanced through combination of the protection layer and the optical function layer. Compared with a traditional single-band temperature control device, the design breaks through band limitation, achieves mid-infrared and far-infrared dual-band cooperative regulation and control, can respond to environment temperature changes in real time, improves the temperature control precision and dynamic performance, and effectively solves the problems that in the prior art, temperature control is not accurate in a complex environment, and the application scene is single.

The application discloses a kind of air conditioning system based on radiation temperature control, belong to high-efficiency energy-saving technical field, comprising: temperature controller, for adjusting the temperature of building indoor, the working mode of the temperature controller includes refrigeration mode and heating mode;Variable temperature adjustable metal ceiling radiation heat exchange plate is used to adjust the cold and hot radiation of building indoor, to ensure that the cold and hot radiation of building indoor is balanced.The present application detects the temperature change of inner and outer wall to determine the temperature difference of inner and outer radiation, and automatically adjusts the temperature of variable temperature adjustable metal ceiling radiation heat exchange plate according to the indoor temperature and humidity, so that the indoor temperature is balanced, and a more comfortable indoor environment is obtained, so that the human body obtains the comfort of natural constant temperature, and the flow rate of air is formed by active pushing of convection system, so that heat exchange is obtained, so that the human body in the room is not easy to feel hot and cold or overcooling and overheating.

The application discloses a PET plastic modification method and application of modified PET plastic in asphalt modification, and relates to the technical field of road engineering materials.The PET modification method comprises the following steps: (1) PET is subjected to microwave radiation treatment to realize PET depolymerization, and PET oligomer is obtained; and (2) soybean oil is subjected to grafting reaction with the PET oligomer to obtain grafted modified PET; the microwave radiation treatment is carried out under normal pressure, the radiation frequency is 2.45 GHz, and the radiation temperature is 200-300 DEG C.The PET is subjected to depolymerization by using the microwave depolymerization technology, the efficient depolymerization of the PET can be realized under normal pressure in a very short time of 2-10 min, then the PET after the microwave depolymerization is subjected to grafting modification by using soybean oil as raw material, the waste soybean oil raw material can be used, the resource utilization of the waste soybean oil raw material is realized, and the problems of phase separation and performance degradation of the PET modified asphalt material are solved.

The invention discloses a portable storable radiation temperature measuring mechanism and measuring system, and relates to the technical field of measuring mechanisms, the measuring mechanism comprises a measuring mechanism body, the surface position of the measuring mechanism body is fixedly provided with a display, and the surface position of the measuring mechanism body is fixedly provided with a control panel. A control switch is arranged on one side of the measuring mechanism body, a wiring terminal is fixedly installed on one side of the measuring mechanism body, a wire is inserted into the wiring terminal, the other end of the wire is fixedly connected to a measuring pen, a hand rope is fixedly connected to the other side of the measuring mechanism body, and a handle is fixedly connected to the other side of the measuring mechanism body. A bottom plate is arranged in the middle of the rear side of the measuring mechanism body. The measuring mechanism is reasonable in structure, the measuring mechanism body can be fixedly installed on the bottom plate through the butt joint assembly, then the position of the arm plate can be fixed through the adjusting assembly, and finally the rotation angle of the arm plate can be fixed through the positioning assembly, so that the measuring mechanism body can be placed obliquely.

The invention provides a broadband bidirectional reflectance distribution function (BRDF) measurement method and system of source-to-direction hemispherical reflectance (DHR), belongs to the technical field of bidirectional reflectance distribution function measurement, and is used for reflection spectrum distribution measurement of materials at different wavebands and detection angles. Existing researches on the aspects of BRDF measurement, modeling, application and the like mainly aim at visible light and near-infrared bands, spectrum BRDF measurement is directly achieved through a broadband light source, the method has the advantages of being rapid, simple and convenient, however, when an incident signal is decomposed to a wavelength point, energy is weak, and the measurement signal-to-noise ratio is affected. According to the invention, the BRDF measurement absolute value is traced to the direction hemisphere reflectivity by using the relation between the BRDF and the reflectivity and adopting a BRDF relative measurement method, so that the measurement of incident light and a detection solid angle is avoided. In the aspect of detection, a band-pass spectrum is selected by using an optical filter, and broadband BRDF measurement is carried out. According to the method and the system, complete measurement of the BRDF is realized, and the method and the system have important significance in the fields of infrared remote sensing and radiation temperature measurement.

A low-stress temperature control device of a satellite-borne optical reflector comprises an optical reflector, a flexible core shaft, a reflector back plate, a radiation temperature control plate, a temperature control flexible supporting column, a heating assembly, a thermistor and a thermal control multi-layer heat insulation assembly. The optical reflector is installed in a suspended mode through the flexible mandrel, flexible glue bonding, radiation temperature control and the like, the temperature adaptability is improved, and the influence of a temperature control device on the surface type of the optical reflector is reduced. And the reflecting mirror surface adopts silver and a dielectric film, and the area except the reflecting surface is coated with a plurality of layers of heat insulation components, so that the adaptability of the device to a complicated and changeable space heat flow environment is improved. In a limited rotation angle range of the reflector, through asymmetric layout of a long axis and a short axis, the emission height size is reduced. The method can be applied to a space pointing mechanism, is suitable for occasions where out-cabin height direction resources are limited such as a flat plate type satellite platform, has the advantages of being good in space environment adaptability, low in launching envelope and flexible in application, and is suitable for various orbit application scenes.