80 results about "Laser measurement system" patented technology

The invention relates to the technical field of real estate surveying and mapping, and particularly discloses a real estate surveying and mapping project regional surveying and mapping method and system based on an unmanned aerial vehicle, and the method comprises the steps: 1, obtaining basic topographic data, local policies and airspace limitation of a surveying and mapping region, and organizing team personnel to carry out on-site survey; 2, dividing a surveying and mapping area into a plurality of areas by using a GIS tool, formulating a flight height, a flight route and an overlapping rate, and meanwhile, arranging a GCP; step 3, according to the planned flight task, performing unmanned aerial vehicle flight in different regions, and collecting region images and point cloud data in real time; according to the method, the unmanned aerial vehicle is used for carrying the laser measurement system and the camera to collect the point cloud data and the image data of the project surveying and mapping area under the regional condition, and then the point cloud data and the influence data are integrated for drawing to obtain the final surveying and mapping result, so that the field workload can be reduced on the premise of ensuring the result precision; object boundaries are presented in the form of laser points, which is convenient for operators to judge.

The invention discloses a laser measurement system suitable for a large complex curved surface and a measurement method thereof.The measurement system comprises a control module, a positioning module, a pre-scanning module and a high-precision scanning module, and the control module comprises a high-precision scanning planning unit and a scanning analysis unit; the high-precision scanning module comprises a three-dimensional scanning platform, a universal mechanical arm and a distance measuring laser; the measurement method comprises the steps of pre-scanning to generate an initial model, scanning path planning and scanning attitude control, high-precision scanning to collect point cloud data, preprocessing and marking of the high-precision scanning point cloud data, local optimization and supplementary scanning strategy generation and high-precision scanning model generation. According to the measurement system and method, the dynamic scanning path of the high-precision scanning module is intelligently planned based on the pre-scanning result, the pre-scanning and high-precision scanning strategies are combined, high-density coverage and uniform sampling of the large complex curved surface are achieved, measurement is accurate, the anti-interference capacity is high, and the model scanning precision is high; a dynamic supplementary scanning mechanism is automatically marked and triggered in the scanning process, and the quality of scanned data is ensured.

The invention relates to a robot grinding and polishing self-adaptive compensation method based on multi-line laser, and relates to the field of robot positioning precision. According to the technical scheme, online high-resolution measurement of the workpiece is achieved through the multi-line laser scanning sensor, hand-eye parameters are dynamically updated in combination with multi-view calibration and data fusion, the tail end pose of the robot is corrected in real time through the mixed error model fusing MDH kinematics and machine learning, and the grinding and polishing precision and consistency are guaranteed. Wherein the MDH model is responsible for coarse positioning to guarantee interpretability of a kinematic structure, the machine learning model captures nonlinear dynamic errors such as thermal expansion and abrasion, and the MDH model and the machine learning model are combined to achieve self-adaptive real-time compensation of a complex error source. The error compensation precision is improved from the millimeter level to the submillimeter level, the cost of the line laser measurement system is only tens of thousands of yuan, the size is small, installation is easy, and compared with a laser tracker, the cost and the installation difficulty are greatly reduced.

The invention discloses a laser measurement system for the size of a rubber sealing element, and relates to the technical field of laser measurement of the size of the rubber sealing element, and the laser measurement system for the size of the rubber sealing element comprises a fixed seat, a cylinder is fixed at the top of the fixed seat, and a mounting frame is fixed at the output end of the bottom of the cylinder. And a laser measuring head is detachably mounted in the mounting frame. According to the laser measurement system for the size of the rubber sealing element, when the size of a rubber sealing ring needs to be measured, the rubber sealing ring sleeves a connecting sleeve, a mounting frame is driven to move downwards by starting an air cylinder, and a positioning sleeve can be moved out of the connecting sleeve through cooperation of a round block, a rotating shaft, a connecting spring, a hinge rod and a moving block; therefore, the inner side of the rubber sealing ring is extruded, the bent rubber sealing ring can be supported, and the problem that the measurement data of the laser measuring head is inaccurate due to the fact that the rubber sealing ring is in a bent state is solved.

The invention provides a steel plate shape measurement and calibration method, belongs to the field of three-dimensional shape measurement and calibration, and aims to realize three-dimensional reconstruction and shape measurement of the surface of a steel plate. In order to realize high-precision detection of the shape of the steel plate, X, Y and Z coordinate data of the surface of the steel plate are obtained through a double-line laser measurement system. The measurement system is composed of a plurality of cameras and two line lasers, and the installation positions of the cameras are determined to ensure that a certain overlapping view exists between the cameras, so that data splicing is realized. In the measuring process, an image shot by the camera is processed, position information of laser rays in the image is extracted, pixel coordinates are converted into actual world coordinates according to calibration parameters and the working distance of the camera, and X, Y and Z three-dimensional coordinate data of the surface of the steel plate are obtained. And vibration compensation is carried out in the measurement process, so that the accuracy and the stability of a measurement result are ensured.

The high-density board intelligent processing system comprises an intelligent suspension conveying rail, one end of the intelligent suspension conveying rail is provided with a feeding conveying rail, the other end of the intelligent suspension conveying rail is provided with a qualified discharging conveying rail, and the middle section of the intelligent suspension conveying rail is provided with a processing conveying rail and a classified discharging conveying rail; a plurality of machining conveying rails are arranged, a machining station is arranged below each machining conveying rail, an image collecting system and a laser measuring system are arranged on each machining station, a hanging trolley is arranged on the intelligent hanging conveying rail, and a telescopic cantilever device is arranged at the lower end of the hanging trolley. A high-density board is clamped on the telescopic cantilever device, the telescopic cantilever device drives the high-density board to be machined and detected in the longitudinal direction and the circumferential direction, and the hanging trolley drives the high-density board to be conveyed transversely. The device has the advantages of intelligent suspension conveying of the high-density boards, multi-station continuous double-sided defect detection, measurement and calibration, and classified conveying according to calibration results.

The invention discloses a laser measurement system building method for ultra-large aviation process equipment, which comprises the following steps of: designing a measurement field, setting a system building point position of the measurement field, and determining a measurement station of a laser tracker; measuring and recording temperature data of each building point in the measurement field; measuring the space coordinates of all the system building points in the measuring field; performing iteration judgment of out-of-tolerance data on the space coordinates of the building points at the measurement stations of the laser tracker so as to eliminate the building points with out-of-tolerance space coordinates; performing spatial networking on all the system building points in the measurement field, and determining the relative spatial relationship of all the system building points; and establishing a coordinate system based on the relative spatial relationship of all the system establishment points in the measurement field. According to the technical scheme provided by the invention, the problem that in a reference point measurement mode of ultra-large aviation process equipment, due to measurement errors and temperature factors of measurement equipment, the precision of a measurement field formed by station transfer matching of measured data and theoretical data of the reference point is reduced, and the assembly measurement requirement cannot be met is solved.

The invention discloses a robot in-situ line laser measurement system and a calibration method, a six-degree-of-freedom robot is adopted to carry a line laser sensor, a human-computer interaction interface is developed, and the measurement efficiency and reliability are improved; besides, in order to improve the measurement precision, a neural network optimized by an intelligent algorithm is adopted to compensate the positioning error of the tail end of the robot, a calibration model is constructed by measuring a standard cylinder, and solving is carried out through a penalty function method, so that the measurement attitude of the laser sensor is obtained, and the three-dimensional coordinates of a measurement point are analyzed. According to the invention, the measurement efficiency can be improved, and the measurement precision and reliability can be ensured, so that the adaptive capacity for the measurement requirements of aerospace large complex components is enhanced.

The invention relates to the technical field of precision optical measurement, in particular to an online laser measurement system and method for six-degree-of-freedom motion errors of a linear workbench, and the measurement system comprises a laser emission unit, a laser beam splitting error compensation unit, a fixing module and a motion module which are sequentially arranged. According to the online laser measurement system for the six-degree-of-freedom kinematic error of the linear workbench, full modular design is carried out, and the online laser measurement system is suitable for being systematically integrated with a to-be-measured target so as to adapt to application in various industrial environments; through multi-beam path design and sensitivity analysis, effective compensation can be carried out for beam drift and installation errors, and the accuracy and reliability of measurement are improved; a mapping model between a detection result image and a light beam target image is constructed by utilizing machine learning, so that the beam splitting precision of a laser beam can be fully improved, the measurement deviation caused by an optical path and an equipment error can be reduced, and the aim of fully improving the motion error measurement effect of the linear workbench is fulfilled.

The invention discloses an FMCW laser measurement system light source nonlinear correction method based on physical mapping modeling and a TD3 algorithm, and belongs to the fields of laser radar, laser measurement, artificial intelligence and the like. An FMCW laser measurement system is usually limited by the nonlinear characteristic of a tunable laser, especially the bandwidth is increased under triangular wave modulation, a traditional correction method is difficult to achieve a good effect, and the measurement precision and quality are affected. The invention provides an innovative correction method combining a physical mapping model and a TD3 algorithm, and provides an effective compensation mechanism for nonlinear errors of an FMCW laser measurement system under triangular wave modulation. Comprising the following steps that an FMCW laser measurement system is designed and built, PD measurement data are utilized, data preprocessing is carried out, and a data set is built; fitting nonlinear characteristics of the system by using a physical mapping relation; nonlinear correction is realized based on TD3 algorithm control; the nonlinear correction method optimizes the performance of the FMCW laser measurement system through combined application of physical mapping modeling and an RL control strategy.

The invention relates to a vibration suppression method of a high-precision hardware part continuous punching machine in the field of intelligent manufacturing equipment industry in high-end equipment manufacturing industry, which comprises the following steps of: identifying a main vibration frequency and a secondary vibration frequency by adopting a peak detection algorithm according to vibration spectrum distribution, and determining a key frequency point set of multi-band vibration; through a pre-established vibration mode and damping parameter mapping model, for the dominant frequency vibration feature vector, a table look-up method is adopted to obtain a corresponding initial damping parameter combination, and a preliminary damping adjustment scheme is determined; the optimized damping parameter combination is adopted, the rigidity and the damping coefficient of a damping device are dynamically adjusted through a servo control system, multi-frequency-band vibration is restrained, and stable stamping process data are obtained; geometric dimension data of the suspender and the check claw are collected in real time through a laser measurement system, the dimensional deviation trend is analyzed through a statistical process control algorithm, and the stability of the stamping process is judged.

The invention provides an IMU (Inertial Measurement Unit) external parameter calibration method of a laser SLAM (Simultaneous Localization and Mapping) measurement system, which comprises the following steps of: scanning a specific site by using a high-precision stand type three-dimensional laser scanner with inclination angle correction, so as to obtain high-precision point cloud data C0; the high-precision reference point cloud provides accurate basic data for the subsequent calibration process, and the calibration precision can be improved. And a static acquisition mode: acquiring data by locking the SLAM system equipment on a tripod for static scanning. Compared with the prior art that point cloud coordinates are possibly influenced by motion distortion due to equipment motion (such as shaking of the equipment by an operator), the static acquisition mode fundamentally avoids the distortion problem caused by the motion, so that the acquired data can more accurately reflect the actual geometrical relationship, and the calibration accuracy is further improved.

One example provides a laser measurement system comprising an alignment artifact attached to a global reference frame. The alignment artifact has features that define corresponding reference points. A controller is configured to obtain metadata comprising expected locations of the corresponding reference points for the features within a target view during a scan. The controller is also configured to obtain a raw point cloud of the alignment artifact within a scanner reference frame. The controller is further configured to determine scanned features from the raw point cloud, and locations of corresponding scanned reference points to form a set of scanned locations. The controller is also configured to determine a transformation matrix to transform coordinates between the scanner reference frame and the global reference frame based at least upon the set of expected locations, the set of scanned locations, and a common direction vector for a plurality of laser line scanners.

The invention relates to the technical field of laser measurement, in particular to a pivot base multi-dimensional error detection device based on laser scanning, which comprises a laser measurement device and an intermittent annular conveying device, a plurality of tooling plates are arranged on the intermittent annular conveying device, a driving assembly is arranged on the intermittent annular conveying device, and the driving assembly is connected with the laser measurement device. A mounting box is arranged on the tool plate, and an angle conversion assembly and a rotating assembly are arranged in the mounting box; through organic cooperation of three core mechanisms of transmission and driving time sequence cooperation, rotation and revolution mode switching and layered elastic driving, key problems of multi-degree-of-freedom cooperative control, single ball head motion function, driving failure in an inclined state and the like of an existing laser measurement system are effectively solved. And the completeness of workpiece three-dimensional form and position error detection is obviously improved.

The invention discloses a double-color-based multi-line laser measurement system and method, which are characterized in that the color of projected line laser is coded to ensure that only line laser strips with specified colors are contained in a certain pixel interval, and the double-color separation of the same frame of RGB image is realized by combining Raw data and a Bayer filter array to realize the distinguishing between the line laser strips; the height information of the to-be-measured object at each pixel point is demodulated and reconstructed according to the relative position relation between the camera and the laser strip, single-line laser is replaced by multi-line laser, the efficiency of the measurement system is higher, and the measurement depth can be remarkably enlarged according to a two-color coding mode.

The present invention provides a method for calibrating the external parameters of the IMU of a laser SLAM measurement system, which utilizes a high-precision scanner: by using a high-precision stand-type three-dimensional laser scanner with tilt correction to scan a specific site, high-precision point cloud data C0 can be obtained. This high-precision reference benchmark point cloud provides accurate basic data for the subsequent calibration process, which helps to improve the accuracy of the calibration. Static acquisition method: data is collected by locking the SLAM system device on a tripod for static scanning. Unlike the prior art in which the point cloud coordinates may be affected by motion distortion due to device movement (such as the operator shaking the device), this static acquisition method fundamentally avoids the distortion problem caused by motion, so that the collected data can more accurately reflect the actual geometric relationship, thereby improving the accuracy of the calibration.

The application provides a steel plate shape measurement calibration method, belongs to the field of three-dimensional shape measurement and calibration, and aims to realize three-dimensional reconstruction and shape measurement of a steel plate surface. In order to realize high-precision detection of the plate shape, the application obtains X, Y and Z coordinate data of the steel plate surface through a double-line laser measurement system. The measurement system is composed of multiple cameras and two line lasers, the installation positions of the cameras are determined to ensure that the cameras have a certain overlapping field of view, so that the data can be spliced. In the measurement process, the image captured by the camera is processed, the position information of the laser line in the image is extracted, the pixel coordinates are converted into actual world coordinates according to the calibration parameters and the working distance of the camera, and the X, Y and Z three-dimensional coordinate data of the steel plate surface are obtained. Vibration compensation is carried out in the measurement process to ensure the accuracy and stability of the measurement result.

The invention discloses a laser measurement system for the size of a rubber sealing element, and relates to the technical field of laser measurement, and the system comprises a signal collection module S11 which is used for obtaining distance measurement signal data collected by a laser distance measurement device in a continuous measurement process on the surface of the rubber sealing element, the ranging signal data comprises a scanning angle, laser emission time, laser echo receiving time and laser echo intensity; the stable screening module S12 is used for extracting signal segments with continuous angles and emission time intervals lower than a preset interval value according to scanning angles and laser emission time in the ranging signal data, and marking the signal segments as stable scanning segments; according to the method, through synchronous acquisition of distance measurement signal data, stable screening of credible signal fragments and high-precision fitting of radial dimension data, accurate reconstruction of the target contour dimension of the rubber sealing element and improvement of dimension consistency judgment capability are realized.

A compact inspection assembly comprising digital sensors and / or laser measurement systems to measure and validate attributes of pipe and associated threaded connections. A custom designed end-effector sensor assembly is selectively attached to a robotic arm having software and control systems. An automated sensor assembly, selectively positioned relative to a pipe section, measures data regarding the pipe and associated threaded connections. The measured and recorded data can be inspected for defects and / or compared to predetermined standards (such as, for example, original equipment manufacturer and / or end user specifications or requirements) to verify pipe / connection compliance with desired standards.

The invention discloses a self-supervised laser speckle denoising method based on a transform domain, and relates to the field of laser measurement. Laser speckle noise is modeled into a Poisson-Gaussian mixture model, statistical characteristics of the laser speckle noise are represented, and efficient training of a denoising model is realized on the premise that a clean image does not need to be labeled by adopting a parameter estimation network fusing a residual attention strategy with a U-Net architecture and a self-supervised denoising network containing an asymmetric convolution Inception structure. A mixed noise domain is converted into a Gaussian noise domain through generalized Ansu transform, multi-loss function optimization is combined, the algorithm denoising performance is improved, the peak signal-to-noise ratio of a light spot image is remarkably improved, and then the precision of a laser measurement system is improved. The method is simple and efficient, adapts to different laser measurement devices, can effectively improve the measurement precision in the fields of laser radar, industrial detection, medical imaging and the like, and provides core technical support for the industries of intelligent manufacturing, automatic driving and the like.

This application relates to the field of rail straightening equipment, and provides an intelligent rail weld straightening machine, including a machine frame, a laser measurement system, and a straightening force application system. The laser measurement system includes a horizontally sliding walking unit. The straightening force application system includes a first vertical force application mechanism located on the moving path of the walking unit. The first vertical force application mechanism includes a first hydraulic cylinder and a force application column. The first hydraulic cylinder is fixed to an upper moving platform, and the force application column is rotatably connected to the movable end of the first hydraulic cylinder via a rotating mechanism. A swing block is provided on the outer side of the rotating mechanism, and a limiting protrusion is provided on the free end of the swing block. A limiting groove is provided on the outer side of the force application column to fit into the limiting protrusion. When the force application column is in an upward rotating state, the limiting protrusion is matched and locked inside the limiting groove. Based on this, the possibility of collision between the force application column and the walking unit can be reduced in the event of an unexpected power outage, and the possibility of positional displacement or even damage to the walking unit can be reduced.

The invention discloses a wafer-level laser measurement system, and relates to the technical field of wafer-level testing. The movable carrying table, the beam shaping system and the like are used for selectively carrying out polarization testing or changing the beam diameter to enable the beam diameter to be smaller than the clear aperture of a conventional small optical element, the rapid switching function from the polarization testing to the non-polarization testing is achieved, and therefore the purposes of reducing the weight and cost are achieved, the high-risk behavior of disassembling and assembling a machine table is reduced, and the working efficiency is improved. The size of an existing equipment optical element is reduced by two times, the weight is reduced by four times, and the function switching time is shortened from 4-6 hours in the prior art to current 1 min.

This invention relates to the technical field of precision chip measurement, specifically a laser measurement system and method for the gap between a chip transfer carrier and a substrate. The system includes a laser emitter, a transmission / reflection separation module, a displacement stage, and an imaging screen. In the laser measurement system for the gap between the chip transfer carrier and the substrate, the displacement stage is spaced between the transfer carrier and the receiving substrate. A first light beam and a second light beam are reflected and refracted and then reflected again by the transfer carrier and the receiving substrate, respectively. This results in multiple light spots being formed on the imaging screen by the first and second light beams. Furthermore, when the transfer carrier deflects or moves relative to the receiving substrate, the positions of the multiple light spots on the imaging screen change after reflection and refraction by the transfer carrier and the receiving substrate. The imaging screen measures the distance values ​​of each light spot after the change, thereby improving the accuracy of the gap measurement between the chip transfer carrier and the receiving substrate.

The invention belongs to the field of nuclear power station on-site maintenance, and particularly relates to a nuclear reactor pressure vessel cylinder sealing surface high-precision detection device which comprises a vehicle frame, a vehicle driving mechanism, a video inspection system, a laser measurement system and an electric control system. The vehicle frame is used for installing the detection device on the to-be-detected sealing surface body; the vehicle driving mechanism is connected with the vehicle frame and used for driving the detection device to operate along the measuring guide rail. The video inspection system is mounted on the vehicle frame and is used for shooting and inspecting the sealing surface; the laser measuring system is mounted on the vehicle frame and used for scanning and measuring the sealing surface; and the electric control system is connected with the vehicle driving mechanism, the video inspection system and the laser measurement system and is used for controlling all automatic and manual operations of the detection device. The device provided by the invention can perform automatic inspection and defect measurement on the sealing surface of the nuclear reactor pressure vessel cylinder, realizes remote control equipment inspection and measurement of the sealing surface, and is stable in operation and accurate in positioning.

The present disclosure provides a laser measurement system and method, which is applied to the field of microwave photon technology. The system comprises an antenna, a microwave source, a laser, a polarization controller, a double parallel Mach-Zehnder modulator, an electrical coupler, a photoelectric detector and a signal processing module. The antenna is used to receive a return signal, the microwave source is used to emit a reference signal, the polarization controller controls the polarization direction of the optical carrier emitted by the laser, the return signal and the reference signal are modulated onto the optical carrier with the controlled polarization direction through the double parallel Mach-Zehnder modulator, and a modulated optical signal is output, the modulated optical signal enters the signal processing module after frequency mixing processing by the photoelectric detector, and the signal processing module outputs a final result to obtain the measurement results of Doppler shift and angle of arrival at the same time. The present disclosure can realize the simultaneous measurement of Doppler shift and angle of arrival, determine the direction of Doppler shift, and is not limited by electromagnetic interference and working bandwidth, and has a very large working bandwidth.

A compact inspection assembly comprising digital sensors and / or laser measurement systems to measure and validate attributes of pipe and associated threaded connections. A custom designed end-effector sensor assembly is selectively attached to a robotic arm having software and control systems. An automated sensor assembly, selectively positioned relative to a pipe section, measures data regarding the pipe and associated threaded connections. The measured and recorded data can be inspected for defects and / or compared to predetermined standards (such as, for example, original equipment manufacturer and / or end user specifications or requirements) to verify pipe / connection compliance with desired standards.

The invention discloses an installation and adjustment method of a line laser measurement system and a line laser measurement system. The method obtains the first end point and the second end point of a laser line emitted by a line laser sensor, respectively scans the center of a center circle of a tower gauge platform to obtain the first precise point coordinates and the second precise point coordinates, calculates the swing angle information of the laser line according to the first precise point coordinates and the second precise point coordinates, and judges whether the swing angle information is within a preset accuracy range. If so, it indicates that the measurement system meets the preset requirements. Otherwise, the emission angle of the line laser sensor is adjusted according to the swing angle information, and the first precise point coordinates and the second precise point coordinates are re-acquired to calculate the swing angle information until the obtained swing angle information is within the preset accuracy range. The technical problems in the related art of large error and strong dependence on manual operation due to simple reliance on manual observation and adjustment of the swing angle of the laser line emitted by the line laser sensor are solved.

The invention relates to a laser measurement system for cloud cover observation. The laser measurement system comprises a basic bearing shell and a scanning measurement unit arranged at the top of the basic bearing shell, an external lens is arranged on one end face of the scanning measurement unit; the device is characterized by further comprising a shielding self-cleaning assembly; the shielding self-cleaning assembly comprises a bearing pipe, a cleaning belt and an air pump. According to the laser measurement system for cloud cover observation, the technical problems that in the prior art, a laser radar device is tedious to use, easy to clean and not timely, wet dust is difficult to remove, and a lens is easy to scratch and damage in the cleaning process are effectively solved; therefore, the technical effects that the laser measurement system for cloud cover observation is convenient to use, and the lens can be automatically and thoroughly cleaned at regular time without being scratched and damaged are achieved.

The invention relates to the technical field of measurement, and discloses a parameter self-calibration method of a spatial triangle large-length laser measurement system, which comprises the following steps of: arranging three paths of independent laser interferometers into a spatial triangle to measure three paths of parallel light, a fourth path of laser interferometer is introduced to calibrate the displacement values of the three paths of independent laser interferometers to obtain a displacement value formula of the interferometers with the same optical path; calculating a displacement error formula of the same-light-path interferometer and the fourth-path laser interferometer; displacement values of the three paths of independent laser interferometers and the fourth path of laser interferometer at n measurement points are obtained, and a to-be-optimized target function is constructed; optimizing the target function to be optimized by adopting a nonlinear least square method to obtain optimal system parameters and coordinates of a fourth path of laser interferometer; according to the method, the problem that the side lengths and coordinates of a plurality of laser interferometers are difficult to measure is solved, and meanwhile, the measurement precision of the space triangle large-length laser measurement system is improved.

The invention relates to a novel medium-wave thermal infrared imager calibration device and calibration method, and relates to the field of measurement, the novel medium-wave thermal infrared imager calibration device comprises a black body controller, a black body, a medium-wave thermal infrared imager, a collimation laser, a laser measurement system, an endoscope, a focusing lens and a photoelectric detector, the medium-wave thermal infrared imager is placed on one side of the heating end of the black body; an endoscope is placed at the position where the input end is aligned with the medium-wave thermal infrared imager and the output end is aligned with the black body, a beam splitter is placed outside the input end of the endoscope, a collimation laser is placed in the direction of 45 degrees of the normal of a reflecting surface of the beam splitter, and a laser measurement system is placed in the direction of 45 degrees of the normal of a transmission surface of the beam splitter; the medium-wave thermal infrared imager calibration device has the advantages that the influence of the absorption effect of environmental atmosphere transmission on calibration of the medium-wave thermal infrared imager is basically eliminated, and the measurement uncertainty caused by calibration in the use process of the medium-wave thermal infrared imager is effectively reduced.