74 results about "Black body" patented technology

The invention discloses a closed gas controlled release test platform for testing infrared imaging equipment. The closed gas controlled release test platform comprises a gas source, a gas release box, a control system and an auxiliary system, the gas source is connected with the gas release box through a pipeline; the control system is respectively connected with the gas source, the gas release box and the auxiliary system; the auxiliary system is respectively connected with the gas source and the gas release box through pipelines; the gas release box comprises a gas chamber and a black body source; the air chamber and the black body source are arranged adjacently; the air chamber is in a cuboid shape. The invention provides a large-size closed gas controlled release test platform, which can be used for simulating hazardous gas leakage diffusion distribution in a real environment in a laboratory environment, obtaining the gas column concentration with the highest optical path of 1000mm, and flexibly adjusting the gas source type according to detection requirements. Concentration inversion algorithm development and concentration calibration of the infrared imaging equipment can be realized.

The application provides a method and system for acquiring infrared video delay, comprising: capturing, by an infrared imaging device, an infrared video of a conversion process in which a black body is converted from a first state to a second state, and simultaneously capturing, by a high-speed camera, a normal video of the conversion process and an external display device used for displaying the infrared video; performing frame-by-frame analysis on the normal video to acquire a first time point at which the conversion process is completed on the display device and a second time point at which the conversion process is completed in the normal video; acquiring a difference between the first time point and the second time point, and determining the difference as an imaging delay of the infrared video. The same conversion process of the black body can be captured by a normal device and an infrared device to obtain a normal video and an infrared video, respectively, and the infrared imaging delay can be acquired through the normal video and the infrared video, so that the acquisition of the infrared imaging delay is fast and simple.

To make it possible to accurately measure a surface temperature of a device under test during testing. An inspection apparatus according to the present disclosure configured to test a device under test by contacting an electrode terminal of the device under test with a conductive contact to electrically connect between a tester and the device under test, includes: a device-under-test support unit that supports the device under test; an infrared-light receiving unit that receives infrared rays radiated from the device under test, at least the device under test being as an object to be temperature-measured; and a temperature measuring device having a temperature conversion function of converting the infrared rays from the infrared-light receiving unit into a temperature of the object to be temperature-measured, wherein the device-under-test support unit has a black body at a peripheral edge region or in a vicinity of the peripheral edge of the device-under-test support unit.

The invention relates to the technical field of optical measurement, in particular to a system and a method for measuring infrared transmissivity of a material under gas radiation interference, and the system comprises a gas heat source system, a transmissivity testing system and a data acquisition and processing system, the gas heat source system provides high-temperature radiation gas for a test cavity of the transmissivity test system; the black body and the spectrograph directly face two to-be-tested materials which are oppositely arranged on the test cavity; and the data acquisition and processing system acquires state parameters of the high-temperature radiation gas, the temperature of the to-be-measured material and optical signals of the spectrograph. According to the invention, the high-temperature radiation gas with controllable state parameters is provided for the test cavity through the gas heat source system, and different gas radiation interference environments are simulated; a spectrograph is used for measuring optical signals, and a data acquisition and processing system is used for acquiring state parameters of high-temperature radiation gas and the temperature of a to-be-measured material, so that data is provided for real infrared transmissivity calculation of the material under radiation interference of different gases.

An apparatus for non-contacting measurement of the temperatures of rotatable elements, such as prism elements of a Risley prism assembly, includes IR emissive patches applied to radially outward facing surfaces of the rotatable elements, reflective surfaces configured to axially reflect black body IR radiation emitted by the patches, IR sensors located behind the rotatable elements and configured to sense the reflected black body radiation, and a controller configured to receive data from the IR sensors and determine therefrom the temperatures of the rotatable elements. In embodiments, none of the IR sensors extends radially beyond a housing of the rotatable elements, and in some embodiments the IR sensors do not extend radially beyond a diameter of a largest of the rotatable elements. The apparatus can further include patches oriented axially rearward and associated IR sensors.

The invention relates to an optical target based on a three-dimensional cavity type structure. The optical target comprises a black box body and a white plate, a round hole is formed in one side surface of the black box body, and a light absorption cavity is formed in the box body; the white plate is connected with the black box body and arranged in the round hole, and an annular area communicated with the light absorption cavity is formed between the white plate and the black box body. When light irradiates the optical target, one part of the light is reflected by the white plate, and the other part of the light enters the annular area around the white plate and then enters the light absorption cavity, and the light is gradually attenuated after being reflected for multiple times in the cavity, so that an extremely low gray value close to a theoretical black body is formed in the annular area; the boundary between the light spot formed on the white plate and the annular area is distinct, and a good gray difference is formed between the light spot and the annular area.

The invention discloses a wafer infrared transmittance measuring device and method, and the device employs a heat preservation box body which is a closed box body, and can guarantee the consistency of the internal environment temperature after full isothermal treatment. A surface source black body is arranged in the heat preservation box body as a radiation background; the temperature of the surface source black body can be randomly set by a user; a tested wafer parallel to the surface source black body is arranged at a position, close to the surface source black body, in the heat preservation box body; the shooting end of the infrared camera faces the wafer to be measured, the distance between the shooting end of the infrared camera and the wafer to be measured meets the requirement that the shooting range completely envelops the whole wafer to be measured, and the wafer to be measured is measured by adopting a full-screen method. During measurement, different working temperature points are set, an infrared camera is used for sampling the whole wafer to be measured for multiple times, obtained data are fitted through a computer, and finally the infrared band average transmittance value of the wafer to be measured is obtained. The problems that an existing wafer infrared transmittance measuring method is high in cost and complex in operation can be solved.

The application discloses an infrared micro scanning lens displacement testing system and method, which comprises the following steps: self-calibrating a lens to be tested; focusing an infrared sensor, and inputting a digital video image of the infrared sensor with the adjusted focal plane into a display control testing unit; selecting a target based on a target generating unit, and selecting a target frequency according to a set multiple of a sampling frequency; adjusting a differential black body temperature of the target generating unit to a non-saturation imaging interval of the infrared sensor, testing a first center position of target imaging of the lens to be tested; adjusting the lens to be tested to a position after micro scanning, and testing a second center position of target imaging of the lens to be tested again; and determining a micro displacement variation of an image plane of the lens to be tested before and after micro scanning based on the first center position and the second center position. The application provides a micro scanning system process detection means, and provides original data support and testing means for a system to obtain a high-quality super-resolution reconstructed image.

The invention discloses an infrared radiation temperature measurement calibration method and system, the method can be applied to an infrared radiation calibration system, and the system can comprise black body equipment, an infrared radiation thermometer, a thermal insulation sleeve, a thermostatic bath and a processing device. The method comprises the following steps: sequentially sending M target temperatures to black body equipment, and sequentially sending N preset environment temperatures to a thermostatic bath at each target temperature; wherein M and N are integers greater than or equal to 1. And acquiring real-time environment temperatures and real-time light intensity voltage values acquired by the infrared radiation thermometer when the black body equipment is at different target temperatures and the thermal insulation sleeve is at different preset environment temperatures. And performing fitting processing on the M target temperatures, and the real-time environment temperatures and the real-time light intensity voltage values collected at different target temperatures and different preset environment temperatures based on a preset fitting algorithm to obtain a calibration coefficient. The objective of the invention is to solve the problem of low efficiency of manually setting a blackbody radiation source in an infrared radiation calibration mode.

The application discloses a device for acquiring a mathematical model for eliminating residual image of infrared image and a use method thereof, which comprises a black body, a lens, a baffle, a signal processing board and an interface board connected in sequence; the lens is directed to the black body and collects infrared rays emitted and / or reflected by the black body; the baffle is an infrared shutter; the signal processing board is used for controlling the lens and the baffle to work according to instructions from a computer; and the interface board is used for connecting the signal processing board with the computer through a network port, sending data to the computer and accepting instructions from the computer. In use, data acquisition is firstly performed; then a decay function is fitted; and finally the fitted decay function is verified, which specifically comprises multiple experimental verification, chip working temperature influence verification and adaptability verification at different temperatures. The application can better adapt to residual image characteristics, increase accuracy, reduce noise interference on fitting, enhance robustness, reduce redundant calculation, and effectively improve processing speed on the premise of ensuring residual image elimination effect.

A net zero power communications system comprising a laser beam generator, a black body, a cooled cavity, an optical absorber in the cooled cavity, and a controller. The controller is configured to identify information for transmission. The controller is configured to control the laser beam generator to emit laser beam pulses at the optical absorber layer that changes a temperature of the optical absorber layer with a pattern that causes the optical absorber layer to emit black body radiation from the cooled cavity to thereby encode the information.

The application provides a detector gain adjustment method applied to an infrared thermal imager, and comprises the following steps: (A1) setting a detector gain parameter of the infrared thermal imager as a reference value; (A2) using a black body for calibrating temperature T0 to obtain a gray value A by using the infrared thermal imager with the adjusted gain parameter; using a black body for calibrating temperature T1 to obtain a gray value B by using the infrared thermal imager, wherein T1>T0; (A3) classifying according to the gray values A and B, adjusting the detector gain parameter, and entering step (A2) until the gray values A and B meet the requirements, and outputting the gain parameters F, INT and S at this time. The application has the advantages of automatic operation, small error and the like.

A multi-channel spliced large-area array infrared camera relative radiation correction method belongs to the technical field of spaceflight optical remote sensing, and comprises the following steps: calculating a non-uniform correction coefficient based on onboard blackbody calibration data; acquiring an on-orbit image, correcting the on-orbit image, acquiring a corrected image, and acting on the corrected image by using the secondary correction coefficient and the channel correction coefficient calibrated in the laboratory to obtain a channel corrected image; a plurality of in-orbit images containing different time periods and scenes are accumulated, pixel gray value sequences corresponding to a preset reference channel and a to-be-corrected channel are extracted as sample data according to design values of overlapping pixels between channels of the in-orbit images, and the sample data of the to-be-corrected channel and the reference channel are taken as an x axis and a y axis respectively, so that the to-be-corrected channel is obtained. And according to the quadratic function correction model, correction based on the overlapping area is carried out on the image after channel correction, long-term calibration and correction of the on-orbit detector pixel response relative change under the condition that the inner black body is stable are realized, and the on-orbit image radiation quality is improved.

There is provided a lighting device (1) comprising a first (111), a second (112) and a third (113) light source. The first light source emits a first light output, being a white light output having a first correlated color temperature (104) and a first color point located above the black body locus (103) in a CIE 1931 xy chromaticity diagram. The second light source emits a second light output, being a white light output having a second correlated color temperature and a second color point located above the black body locus. The second correlated color temperature is at least 500 K higher than the first correlated color temperature. The third light source emits a third light output having a third color point with an x-value in a range of 0.28 to 0.38 and a y-value in a range of 0.13 to 0.23.

The application discloses a kind of blackbody responsivity test device and method, by signal input module to be measured unit and reference unit respectively provide same test signal;By light source processing module, the first light emitted by blackbody module is converted into the second light of required wave band, and the second light is divided into two beams, and is respectively shot to be measured unit and reference unit;By signal analysis and calculation module, the first output signal voltage of measured unit and the second output signal voltage of reference unit are respectively measured, and according to the known first nominal area of measured unit and the second nominal area of reference unit, and the second blackbody responsivity of reference unit, the first blackbody responsivity of measured unit is calculated, can eliminate the loss of light emitted by blackbody in transmission process, and error between theoretical calculation and actual measurement, improve measurement accuracy.

The invention discloses a medium-wave thermal imager calibration method for solid engine tail flame radiation measurement. The method comprises the following steps: measuring image data of a target black body at a corresponding temperature in real time through a medium-wave thermal infrared imager additionally provided with a specific optical filter; performing time dimension alignment and static and dynamic region division on the target area array black body infrared image data to obtain target area array black body static and dynamic infrared features; performing mean value estimation on the target area array black body features to obtain black body uniform feature information at the target temperature; performing characteristic-radiance calibration and curve fitting on the measurement data corresponding to the intermediate infrared thermal imager through the Planck's law of radiation to obtain a calibration equation corresponding to the intermediate infrared thermal imager; and an attenuation piece is additionally arranged again, intermediate infrared calibration equations under different configurations are obtained, and then the infrared radiation attenuation ratio is calculated. According to the invention, high-precision calibration of the intermediate infrared thermal imager can be realized, and the radiation brightness measurement precision and reliability of the intermediate infrared thermal imager can be improved.

An infrared lens refrigeration type detector cold light screen test device and method, the device comprises a high temperature black body, a black body blocking piece, a two-dimensional linear guide rail and a cold light screen two-dimensional adjustment mechanism; the high temperature black body is used for simulating an infrared target, the infrared target is transmitted to an infrared detector through an optical system; the detector has a built-in cold light screen for continuously obtaining cold light screen test results; the black body blocking piece is used for blocking the light outlet diameter of the black body; the two-dimensional linear guide rail is used for driving the black body target to perform two-dimensional scanning in front of the lens, and the linear guide rail movement stroke covers the full aperture of the lens; the cold light screen two-dimensional adjustment mechanism is used for performing two-dimensional precise adjustment on the cold light screen according to the cold light screen test results, and the adjustment precision is better than 0.05 mm. The adjustment method using the above device is simple to operate, the cold light screen matching efficiency criterion is clear, and manual operation or full automatic operation is compatible, so that the device can be used for batch research and production lines of infrared lenses and has a wide application range.

Embodiments of the present application disclose a temperature measurement calibration method and device, electronic equipment and a storage medium. The method comprises adjusting the current temperature of a plurality of black bodies according to a temperature measurement gear, the temperature measurement gear representing a temperature range of temperature measurement calibration; if it is detected that an infrared temperature measurement device is in a thermal equilibrium state, controlling the infrared temperature measurement device to collect standard AD values corresponding to each of the black bodies; and establishing a corresponding relationship between AD values and temperatures through the standard AD values corresponding to each of the black bodies and the current temperature of each of the black bodies, to complete temperature measurement calibration. The embodiments of the present application can automatically calibrate the infrared temperature measurement device, and improve the efficiency and accuracy of temperature measurement calibration.

The application discloses a heating structure of a curved black body, which comprises a heat-conducting seat, a heat-conducting seat and a black body radiation source which are sequentially stacked and installed, wherein the heat-conducting seat, the heat-conducting seat and the black body radiation source are all concave structures, the concave surface of the black body radiation source is a curved surface, a heat-conducting medium is filled in the gap between the heat-conducting seat and the heat-conducting seat and the black body radiation source, and the heat-conducting medium comprises a flexible medium and a granular medium. The application is used for the K scene of a temperature measurement module, heat transfer is performed on the curved black body radiation source, uniform heating of the curved black body is realized, the heat transfer effect is stable, and the K effect of the module can be effectively improved.

The invention relates to the technical field of infrared thermal image temperature measurement and equipment state evaluation, and particularly discloses an infrared emissivity-distance joint estimation method based on multi-angle consistency. According to the method, multi-view infrared images of the same target are obtained, a target function fusing radiation consistency and physical constraints is constructed, the surface temperature, the observation distance and the directional emissivity of the target are solved in a combined mode through an alternating minimization strategy, and finally correction temperature, temperature difference and uncertainty evaluation results are output. According to the invention, a black body does not need to be attached or accurate distance measurement in advance is not needed, and high precision and strong robustness of temperature measurement under complex field conditions are realized.

The invention relates to the technical field of optical metering and testing, in particular to an in-situ measurement device and method for surface infrared spectral emissivity of a high-frequency induction wind tunnel stationary point test model. Comprising a heating wind tunnel, a light path switching unit, a motion unit, a temperature detection unit, an infrared spectrometer and a variable temperature black body. The heating wind tunnel is used for simulating and manufacturing a plasma ultra-high-temperature environment for the aircraft test model in the heating wind tunnel when the aircraft returns to the atmosphere; the light path switching unit is used for reflecting light of the aircraft test model to the infrared spectrometer; or the light of the variable-temperature black body is reflected to the infrared spectrometer; an emergent light path of the light path switching unit is a first light path; the motion unit is used for moving the temperature detection unit into or out of the first light path; the temperature detection unit is used for detecting the temperature of the aircraft test model when the temperature detection unit moves into the first light path; the infrared spectrometer is located on the first light path and used for measuring spectral signals of the aircraft test model and the variable-temperature black body.

The invention provides an atmosphere-free celestial body surface environment simulation device, which comprises a vacuum container assembly which comprises a vacuum cabin and a vacuum unit and is used for providing a closed environment required by a test for a test sample, and the vacuum unit comprises a vortex pump and a turbo molecular pump; the low-temperature helium circulation assembly is used for providing a cold black background environment for the test sample in the vacuum container assembly; the sample cup assembly is arranged in the vacuum cabin and comprises a sample container used for arranging a plurality of sample cups, a heating module and a calibration black body, and the heating module is used for heating the sample cups and controlling the sample cups to different temperatures so as to simulate temperature changes of the moon and the asteroid; and the low-temperature off-axis parabolic mirror is arranged on the vacuum cabin and is used for converting heat radiation signals of the test sample and the calibration black body in the sample cup into parallel light and inputting the parallel light into the Fourier transform infrared spectrometer for spectral analysis. The invention further provides a thermal infrared spectrum testing method which is applied to the atmosphere-free celestial body surface environment simulation device.

A chamber component of a processing chamber, including a body and a textured surface on at least one surface of the body, where the textured surface includes a lattice structure configured to absorb incident electromagnetic radiation at a plurality of frequencies and a plurality of angles of incidence.

The invention discloses a method for generating a temperature measurement curve of a departure type thermal infrared imager, and the method comprises the steps: enabling a measured thermal infrared imager to be at a target environment temperature, enabling a calibration black body to be at another stable normal temperature, achieving the physical isolation of the measured thermal infrared imager and the calibration black body from the environment, and avoiding the risk that the black body is liable to be damaged at an extreme temperature; after the temperature of the thermal infrared imager is stable, radiation intensity characterization values of the normal-temperature black body at different temperatures are collected and fitted to generate a preliminary temperature measurement curve; and finally, correcting the initial temperature measurement curve through a pre-calibrated linear mapping relation to obtain a final temperature measurement curve. The linear mapping step can systematically compensate the measurement deviation caused by the difference between the thermal infrared imager and the black body environment, so that the accuracy of the curve obtained under the off-field condition is close to the ideal same-field condition, and the technical problem that the high-accuracy temperature measurement curve cannot be obtained under the extreme environment temperature is effectively solved on the premise of ensuring the safety of equipment.

A lighting system comprising a light source, a user interface, a sensor, and a controller. The lighting system is configured to emit light output having a luminous flux and a correlated color temperature (CCT). The user interface is configured to provide a user signal, representing a lighting parameter for a desired luminous flux and / or a desired CCT of the light output, having an input signal range from a lower to an upper limit. The sensor is configured to sense intensity and / or sense CCT of ambient light and further configured to provide a sensor signal representing the sensed intensity and / or the sensed CCT of the ambient light. The controller is configured to receive the sensor signal and the user signal and to control, based on these signals, the luminous flux and / or the CCT of the light output in a respective range from a lower to an upper limit.

The invention discloses a temperature measurement method based on an infrared camera, and the method comprises the following steps: 1, collecting truth value data, and constructing a truth value table of temperature and raw value; 2, carrying out pixel point level temperature measurement, and checking a truth table according to the raw value of each measured pixel point; determining a temperature value obtained by performing linear interpolation on two adjacent points of the raw value of each pixel point in the truth table; 3, raw data of the infrared camera in the pixel point level temperature measurement process are obtained; and calibrating raw data of existing different batches of infrared cameras to the interval of the truth table through linear mapping. According to the method, the truth value data is obtained by using the black body to establish the truth table, the raw value and temperature conversion is performed by using the linear interpolation lookup table method and the Hermite interpolation, and the data of different batches of infrared cameras are calibrated through linear mapping, so that the temperature measurement precision is improved.

A chamber component of a processing chamber, including a body and a textured surface on at least one surface of the body, where the textured surface includes a lattice structure configured to absorb incident electromagnetic radiation at a plurality of frequencies and a plurality of angles of incidence.

The invention belongs to the technical field of nuclear magnetic resonance gyroscopes, and relates to a device and a method for measuring longitudinal relaxation time of a miniaturized atomic air chamber. The measuring device comprises: a miniaturized atomic gas cell; the pumping light and light path structure comprises a pumping light laser, a pumping light polarizer, a quarter-wave plate and a light absorption black body which are sequentially arranged along the Z axis; the detection light and light path structure comprises a detection light laser, a detection light polarizer, a half-wave plate, a first right-angle prism reflector, a second right-angle prism reflector, a polarization splitting prism, a first photoelectric detector and a second photoelectric detector which are sequentially arranged along a detection light path; the temperature control system comprises non-magnetic heating devices arranged on the two sides of the miniaturized atomic gas chamber and a temperature control circuit; the magnetic field control system comprises a double-layer magnetic shielding cover, a three-axis magnetic field coil arranged on the outer side of the miniaturized atomic gas chamber, and a magnetic field control circuit; and the signal processing system performs fitting calculation on the longitudinal relaxation time.

To provide a textile product capable of effectively improving the cold protection function. [Solution] Fuji lava stone, which has an emissivity of far-infrared rays in the wavelength range of 4 μm to 24 μm of 80% or more when the radiation intensity of a black body is taken as 100, is powdered to an average particle size of 0.1 μm to 0.5 μm to produce ultra-fine Fuji lava powder. This powder is mixed with cellulose in an amount of 5% to 40% by mass using rayon fiber to produce textile products such as clothing, bedding, carpets, and mats.

The invention discloses a substation infrared temperature measurement inspection device field inspection method and an error correction method, and relates to the technical field of substation equipment infrared accurate temperature measurement, the inspection method comprises the following steps: respectively dividing the detection distance and the temperature measurement range of a detected infrared temperature measurement inspection device to obtain N + 1 detection distances and M + 1 inspection temperature points; the distance between the black body combination and the detected infrared temperature measurement inspection device is sequentially adjusted to be N + 1 detection distances, and M + 1 detection temperature points are sequentially set; obtaining an inspection temperature measurement result of the black body combination detected by the detected infrared temperature measurement inspection device; carrying out error checking on the checking temperature measurement result, if the error requirement is not met, carrying out error correction through an error correction method, and taking an error correction result as an effective temperature measurement result; the temperature measurement accuracy error of the substation infrared temperature measurement inspection device is determined under different environment conditions and detection distances, error correction is performed according to the environment conditions and the detection distances of the temperature measurement error data, and the temperature measurement accuracy of the device is improved.