370results about How to "Realize Calibration" patented technology

The invention discloses a method for calibrating and correcting temperature measurement of an infrared probe as well as a corresponding temperature measuring method. The temperature measurement calibration and non-uniform correction process is as follows: the non-uniform correction is carried out firstly; the temperature measurement calibration is carried out after a collection parameter sum is generated; however, the non-uniform correction is not stopped simultaneously; and in the non-uniform correction, a step of circularly judging whether an extrusion exists in a parameter or not is carried out; and if so, the parameter is corrected; otherwise, the judgment is continuously carried out. A temperature measurement calibrating process comprises the following steps of: carrying out the non-uniform correction once by using the calculated non-uniform parameter for each probe response of collecting a temperature; then recording the temperature and probe response data; repeating the processuntil collecting enough data; and fitting the data to obtain a probe temperature response function. By utilizing the method disclosed by the invention, the steps of non-uniformly correcting and calibrating the temperature measurement of the infrared probe are simplified into one step, so that the correction and the calibration which can be previously realized by the two steps are conveniently realized on one hand, and the precision of the temperature measurement can be improved on the other hand.

The invention relates to a time-domain ground-air electromagnetic detection system and a calibration method, in particular to a system consisting of an induction signal recording device connected with a ground recording device global position system (GPS) synchronization unit, a closed abnormal ring and a data quality evaluation system, and a calibration method for the time-domain ground-air electromagnetic detection system. The closed abnormal ring and the induction signal recording device are adopted, the induction current and induction voltage are simultaneously recorded, and the 24-bit 200Hz sampling rate, a bandwidth of 0-13KHz and a dynamic range of an amplifier of 160dB are achieved. Moreover, the system is synchronous with a ground transmitter and an air receiver GPS, and during measurement, by removing earth background field data, a pure closed abnormal ring electromagnetic signal containing a geometric error is extracted, is input into the data quality evaluation system, andis compared and fitted with the computed closed abnormal ring theoretical value, the system error, the geometric parameter error and the detection resolution of the time-domain ground-air electromagnetic detection system are determined, and the performance of the electromagnetic detection system is tested and calibrated.

It is the general calibration method of model-surface optical measuring system. Calibration board on which is located evenly with black rhombic square array in the white background and projector calibration grating of corresponding rhombic square array are uniquely employed in this invention. The calibration board position is corrected by laser to make the projector to project rhombic square array into the white interstice on the calibration board whose images before and after shutting up the projector is recorded by the camera used as calibration image. Then the basic data are obtained through the processing of the calibration image and accordingly the space coordinates of the projector calibration dots can be calculated. The calibration of the projector is realized on the basic datum through matching the coordinates of corresponding calibration dots of projector image. According to the relationship between the coordinate systems of projector and camera the calibration of systematic geometric parameter can be realized. The invention is of great engineering utility and can solve the accuracy problem of automatic extraction and realize the integrated calibration of camera and projector.

The invention discloses a method for calibration of a workpiece coordinate system. The method for calibration of the workpiece coordinate system comprises the steps that (1) an original point of a tool coordinate system of an industrial robot moves to random three points, not collinear, in a workpiece coordinate system of the industrial robot to obtain workpiece coordinates, in the workpiece coordinate system, of the three points and base coordinates, in a base coordinate system of the industrial robot, of the three points, (2) direction vectors of the three workpiece coordinates and direction vectors of the three base coordinates are obtained according to the workpieces coordinates and the base coordinates of the three points respectively, and (3) a homogeneous transfer matrix of the workpiece coordinate system relative to the base coordinate system is obtained according to the direction vectors of the three workpiece coordinates and the direction vectors of the three base coordinates to accomplish calibration of the workpiece coordinate system. The invention further discloses a device for calibration of the workpiece coordinate system and a method and device for workpiece processing. According to the mode, the method and device for calibration of the workpiece coordinate system and the method and device for workpiece processing can simply and rapidly achieve calibration of the workpiece coordinate system, and is good in operability.

A multifunctional binocular vision sensor of welding robot and relative marking method comprise a camera, a dimming filtering system, an aerating system, a reflector system, and a mounting support, while the camera, aerated system and the dimming filtering system and the reflector system are all fixed on the mounting support, the camera, aerated system, a dimming filtering system, and reflector system are vertically arranged at one side of a welding gum from up to down, the camera and the dimming filtering system are coaxial. The invention also provides relative marking method, while the invention can meet the demands of guiding, welding seam track and quality control in welding process, with high accuracy and effect.

The invention relates to a micro force load device of piezoelectric film suspension beam micro force sensor, belonging to sensor and test technical field, used for the static and quasi-static test and label of piezoelectric film suspension beam micro force sensor, wherein a micro force load device is composed of a one-dimension micro displacement table, a two-dimension micro displace table, a piezoelectric dual-crystal micro force generator, and a damping device. The one-dimension micro displacement table is composed of an X-axis micrometer element and a one-dimension micro displacement table base. The two-dimension micro displace table is composed of a Y-axis micrometer element, a Z-axis micrometer element, a two-dimension micro displacement table base, a support plate and a socket head cap screw. The piezoelectric dual-crystal micro force generator III is composed of a micro probe, a fixing block, two piezoelectric ceramic plates, an aluminum plate, a clamping plate and a socket head cap screw. The invention has simple and reliable structure, easy operation, and improved resolution of micro force loading system, to resolve the problems as instability and hard control of micro Newton force load.

The invention relates to a method for controlling gear shifting of a two-gear mechanical automatic gearbox of a pure electric automobile. By the method, during first gear shifting after the automobile is started each time, whether a target gear is engaged or not is not only judged through a displacement sensor signal, but also a rotation blockage signal of a gear-shifting motor isadded for controlling, so that whether a displacement sensor generates signal drift or not is judged, an output valve of the displacement gear is marked, and the numerical value judgment range for judging whether corresponding gears are in place in a control program is corrected in time. By the method, each time a vehicle is driven, the displacement sensor is diagnosed, and after a signal drift phenomenon, the signal drift is corrected in time, so that the influence on the gear shifting process caused by signal drift is reduced, and the accuracy and the reliability of the entire gear-shifting process are improved.

The invention discloses an elliptic fisheye image-based distortion correction method, which is characterized by comprising the following steps: firstly, establishing an imaging model of an elliptic fisheye image under a coordinate system of a camera by using an elliptic paraboloid; performing approximate calibration on the parameters of the model by using a pixel coordinate system; and finally, performing the distortion correction on the obtained fisheye image by using the established model. The invention provides the elliptic fisheye image-based distortion correction method for a 180-degree viewing angle, which can particularly obtain a fluoroscopic image corrected by the elliptic fisheye image quickly and simply in case of unknown camera parameters.

The invention discloses a virtual vehicle-based real driving cycle test device and method. The method comprises the following steps: selecting a vehicle model, a road vehicle and a driver model in driver-vehicle-road modeling platform software to perform automatic driving or real driver driving; opening a driver-vehicle-road real-time platform and importing the driver model or the real driver operation, the vehicle model and the road model established in the driver-vehicle-road modeling platform into a real-time platform; operating the real-time operation platform; stopping the real-time platform after the driver model or the real driver drives under the selected road model and the vehicle model, and stopping a base frame system; saving operation information on a driver in a file of a specific format by the driver-vehicle-road modeling platform if the operation is the real driver operation, extracting a characteristic parameter of the driver and updating into the current driver model. According to the method, the calibration and the experiment of the entire vehicle are realized.

The invention discloses a non-contact high-precision calibration method and application of the base reference coordinate system of a robot. The non-contact high-precision calibration method comprises the following steps: step 1: installing calibration index tool; step2. calibrating and getting points; step 3. obtaining calibration matrix of the base reference coordinate system of the robot through a coordinate transformation algorithm. By means of the advantages of high precision and non-contact measurement of a laser measuring instrument provided by the invention, through a position encoder and the calibration index tool of internal joint of the robot, the coordinate transformation algorithm is applied, and the non-contact high-precision calibration of the base reference coordinate system of the robot is realized. The non-contact high-precision calibration method of the base reference coordinate system of the robot, the non-contact high-precision calibration method of the workpiece coordinate system of the single robot and the non-contact high-precision calibration method of the tool coordinate system of the single robot are cooperated and applied, hence the non-contact high-precision calibration of the integral robot system is realized. The invention also discloses a non-contact high-precision calibration method of poses between a plurality of robots.

The invention provides the parameter calibration method, device and equipment of a multi-line laser radar, and a readable medium. The method comprises the following steps of creating the three-dimensional scene model of a calibration scene based on the data of the calibration scene collected by a calibrated three-dimensional scanner; acquiring point cloud data collected by the multi-line laser radar to be calibrated at multiple position points in the calibration scene; aligning the point cloud data collected by the multi-line laser radar at each position point and the point cloud data in the three-dimensional scene model to a same coordinate system through the principle of aligning each position point with the corresponding position point in the three-dimensional scene model; establishinga target function between the data of each point collected by the multi-line laser radar in the same coordinate system and the data of a matching point which is nearest to the point in the three-dimensional scene model; and according to the target function, calibrating the parameter of the multi-line laser radar. In the technical scheme, a complex calibration scene does not need to be establishedand the calibration efficiency of the parameter of the multi-line laser radar can be effectively increased.

The invention belongs to the fields of antenna measuring technique and satellite navigation and positioning, and relates to a correction method for the absolute antenna phase center of an outdoor GNSS (Global Navigation Satellite System) receiver based on a precision mechanical arm. In view of the problem that conventional outdoor GNSS observation cannot obtain a high-precision correction model for the absolute antenna phase center of a receiver, a majority of common errors are eliminated through ultra-short baseline observation, the absolute phase center offset (PCO) of a receiver antenna and the separation of phase center variation (PCV) are realized through rapid rotation and inclination of the high-precision mechanical arm, finally the PCO is resolved through a least squares algorithm, and fitting calculation of the PCV is carried out for observation residual. According to the correction method, outdoor operation can be carried out, the correction precision of 1mm for the PCO and PCV can be reached, the correction method is suitable for accurate calibration of the PCO and PCV of the receiver capable of tracking the signals of satellite navigation systems such as a GPS (Global Positioning System), a BDS (Beidou Navigation System), a GLONASS (Global Navigation Satellite System) and Galileo, and thus the systematic measuring error caused by imprecision of the PCO and PCV of the receiver can be eliminated, and the user positioning precision is further improved.

The invention provides a pressure monitoring system marking instrument of an automobile tyre and a marking method thereof. The marking instrument includes two parts; one is a tyre pressure sensor and the other is a diagnosing marking device; the tyre sensor includes a central control module 2, a sensor 1, a RF transmitting circuit and a lower frequency receiving circuit; the tyre sensor is connected with the lower frequency receiving circuit and the central control module 2; the central control module 2 is connected with the RF transmitting circuit and the sensor 1; the marking instrument consists of an SCM, the lower frequency transmitting circuit, the RF receiving circuit, a human-computer interface and a communication interface; the SCM is connected with the lower frequency transmitting circuit; the tyre sensor is connected with the RF receiving circuit which is connected with the SCM; the SCM is connected with the human-computer interface and the communication interface. The invention can simply realize the diagnosing and the marking of the pressure monitoring system sensor of the tyre, is suitable for the automobile types of any collocation, is not interfered by the tyre pressure monitoring system on other automobiles and can not affect other automobiles.

The invention belongs to the field of industrial robot calibration and discloses a method of calibrating a six-dimensional force sensor at the tail end of an industrial robot. The method comprises thefollowing steps of (a) in the measurement process of the six-dimensional force sensor, constructing a relational expression of a force, a torque and displacement measured by the sensor and a relational expression of zero values of the force and the torque on the sensor and a mass center of a load tool; (b) acquiring data of the forces and the torques measured by the six-dimensional force sensor under multiple postures, and performing calculation with a least square method to obtain the zero values of the force and the torque of the six-dimensional sensor; (c) constructing a relational expression about the gravity of the load tool and performing calculation; and (d) constructing a relational expression about installation angles of a sensor coordinate system and a tail end flange coordinatesystem along a Z axis and performing calculation. By adopting the method, the calibration time is shortened, and the measurement precision is improved after a calibration result is compensated.

The present invention belongs to the field of robot structural parameter calibration, and discloses a method for calibrating structural parameters of a robot using a double-ball-bar. The method comprises the following steps: (a) mounting a calibration rod and a tool cup, and fixing a calibration baseplate and three central seats; (b) calibrating a tool coordinate system and a user coordinate system, and measuring the lengths of the sides of a triangle BCD using the double-ball-bar; (c) presetting a point A in space to form a spatial tetrahedron with the BCD, and obtaining the coordinates of point A under the user coordinate system according to the lengths of the sides of the tetrahedron; (d) obtaining vector <base>O'6-CO6-Ai through conversion of coordinates of robot joints to base coordinates; (e) measuring the lengths of the lateral sides of the tetrahedron using the double-ball-bar, and obtaining vector <base>aAi*c according to conversion of user coordinates to base coordinates; and (f) obtaining the structural parameters of the robot according to the parallelogram principle. According to the present invention, the calibration of the structural parameters of a six-degree-of-freedom articulated robot using the double-ball-bar is achieved simply and quickly, and the calibration result has high accuracy.

The invention relates to a depth information acquisition system of a dual-structure light RGB-D camera. The system comprises dual-structure light RGB-D camera structure comprising two structured lights RGB-D sub-cameras symmetrically arranged at 180 degrees, a RGB-D camera calibration module which is used for realizing structured light RGB-D camera internal parameters and distortion parameters external parameters between the color camera and the depth camera according to the asymmetric calibration plate; a multi-source depth information acquisition module which is used for acquiring two original depth images of the two sub-cameras in an asynchronous manner, and forming a binocular image by using the color images acquired by the two cameras to generate a third depth image; and a multi-source depth information processing module which is used for realizing the alignment of the three depth images and the color images, fusing the three depth images, and taking the aligned color images and the fused depth image as the output of a final system. Compared with the prior art, the method has the advantages of parameter calibration, solving of a depth information missing hole, improvement of the quality of depth data, high real-time performance and the like.

The invention discloses a method for calibrating the absolute spectral response ratio of a photoelectric detector, which comprises the steps of: measuring a relative response coefficient of the photoelectric detector within a certain spectral wave band by a wide-spectrum light source divisionism, measuring a laser source which is stably output within the wave band to obtain the absolute response ratio of the photoelectric detector, obtaining an absolute response ratio value within the whole spectral wave band according to the measured relative response coefficient, and obtaining the absolute response ratio value of working wavelength of the detector. The problem that the existing absolute calibrating method is weak in power after the wide-spectrum light source divisionism is used can be solved, the calibrating uncertainty can be reduced, and the method can be used for ultraviolet wave band, visible light wave band and infrared wave band.

The invention discloses an external parameter calibration method used when a camera and a two-dimensional laser range finder are used in a combined mode and relates to three-dimensional information image processing of objects. According to the external parameter calibration method used when the camera and the two-dimensional laser range finder are used in the combined mode, a foldable calibration plate is used for achieving external parameter calibration when the camera and the two-dimensional laser range finder are used in the combined mode, the foldable calibration plate is a long plane which is formed by splicing small rectangular black planes and small rectangular white planes alternately and can be unfolded and folded, the foldable calibration plate is unfolded when used, and the unfolding angle can be adjusted freely; calibration of internal parameter of the camera is achieved by means of a Matlab camera calibration tool box; a camera and two-dimensional laser range finder system is established; the foldable calibration plate is placed, and calibration is completed under the condition that the number of times of information acquisition of a system is smallest; image information and two-dimensional information are acquired and processed by the camera and the two-dimensional laser range finder respectively; processed camera information and processed two-dimensional laser range finder information are matched in a one-to-one mode for combined calibration; a calibration result is optimized by means of the Levenberg-Marquardt algorithm, and then calibration is completed.

The invention relates to an in-orbit calibration method of star sensor lens distortion and a satellite attitude determination method based on starlight vector correction. The invention relates to an in-orbit calibration method of star sensor lens distortion and a satellite attitude determination method. The invention aims at solving a problem of incapability of calibrating a temperature distortion term of an existing calibration method, and a problem of low precision of an existing satellite attitude determination. The star sensor lens distortion in-orbit calibration method comprises the steps that: an included angle between fixed star incident light and a lens optical axis is obtained by calculation according to target fixed star imaging point coordinates and a star sensor lens distortion formula; a light vector direction of the target fixed light is obtained according to the included angle of the incident light and the lens optical axis; and in-orbit calibration of star sensor lens distortion is carried out according to a principle that the included angles of light vector directions of a plurality of target fixed stars are fixed. The attitude determination method comprises the steps that: a target fixed star starlight vector is obtained by calculation according to the target fixed star imaging point coordinates and the star sensor lens distortion formula obtained by calibration; and satellite attitude is determined through star map matching. The methods provided by the invention are applied in the technical field of satellite attitude determination.

The invention provides a method for monitoring the bending moment of an airplane wing in real time based on an FBG (fiber bragg grating), and the method comprises the following steps: 1, pasting FBG sensors on the airplane wing; 2, converting a central wavelength signal of the FBG sensor into a stress value of a measurement point; 3, carrying out the solving of a stress of the surface of the airplane wing in an axial direction; 4, calibrating the unit flexural rigidity; 5, calculating the bending moment through the stress value of the measurement point. Through the above steps, n groups of FBG sensors are pasted on the airplane wing, and a known concentrated force is applied to the tail end of an airplane wing rigid shaft. Moreover, the relation between the stress and the bending moment is built through the plane stress state of the surface of the airplane wing, thereby achieving an effect of converting the stresses measured by the FBG sensors into bending moments, and solving a problem of the real-time monitoring of the bending moment of the airplane wing.

A mobile terminal camera calibrating method includes the steps of selecting a plurality of feature points on a calibration object, a black-and-white checkerboard image; using a mobile terminal camera to be calibrated to take at least two calibration object images; recognizing image space coordinates of the feature points in the taken calibration object images, and determining object space coordinates corresponding to the image space coordinates; according to a projection change relation of the image space coordinates (u and v) and object space coordinates (X, Y and Z) of the feature points, calculating calibration parameters, a principal distance component (fx and fy), an eccentric distortion coefficient (cx an cy), a radial distortion coefficient (k1, k2 and k3) and a tangential distortion coefficient (p1 and p2). The method is designed specially according to physical features of the mobile terminal camera; calculation of the calibration parameters of the mobile terminal camera is achieved; the problems such that the traditional calibrating method has long service time, is inconvenient to operate, high in prices and unsuitable for mobile terminals are solved; calculation results are precise and stable, and effective implementation of calibration of the mobile terminal camera and acquisition of high-quality images is forcibly guaranteed.

The invention discloses a line structure cursor positioning method based on a chessboard target, which comprises the following steps: calibrating a camera to obtain a distortion coefficient D of an internal parameter matrix of the camera, a rotation matrix Rcw of external parameters of the camera and a translation vector Tcw; eliminating camera distortion of the obtained light bar image; extracting a characteristic point Q' of the light bar center on the image from which the camera distortion is removed, and obtaining a homogeneous coordinate (u,v,1)-1 of the point under a pixel coordinate system; calculating the coordinates of a projection point Q" of the Q projected on a normalized image plane under the camera coordinate system according to the coordinates (u,v,1)-1 of the characteristicpoint Q' under the pixel coordinate system; connecting two points between the projection point Q" and the original point into a straight line to obtain a straight line equation under the camera coordinate system; calculating the coordinates of the characteristic point Q under the camera coordinate system by using simultaneous plane equation and linear equation: obtaining coordinates of all characteristic points on the light bar under the camera coordinate system; and fitting the light plane equation by using the obtained characteristic point coordinates. According to the method, all the characteristic points on the light bar can be extracted at the same time, and all the characteristic points on the light bar are calibrated.

The invention provides a method for calibrating a thermal infrared imager. The method, by correcting dynamic range and focal plane temperature of the thermal infrared imager, takes comprehensive considerations of impact factors from temperature drift effects and ge-window attenuating effects, and establishes the function relation between temperatures and the response of the thermal infrared imager after correction so as to calibrate the thermal infrared imager. According to the invention, the method is intended for calibrating the thermal infrared imager, can at the same time calibrate a plurality of thermal infrared imagers, can calibrate accurately and has strong applicability.

The invention discloses a two-line structure light-based online welding seam forming visual detection method. The method comprises the steps of sampling a calibration board under different exposure time to realize calibration of line structure light; after three-dimensional reconstruction, correcting reconstruction results on a mother board by using a standard plane; and finally in combination with three-dimensional reconstruction results of continuous line structure light, performing matching on two three-dimensional curved surfaces, thereby obtaining three-dimensional data of a same positionon the mother board before and after welding on line; and obtaining results of roughness, height, width and the like of a welding seam on line. According to the method, a relatively good result can be obtained under the condition of the uneven mother board such as surfacing or the like; a function can be realized under the condition of the even mother board; the calibration precision and the three-dimensional reconstruction precision can be effectively improved; and a welding seam forming result is subjected to multi-angle analysis.

The invention provides a calibration method for an onboard hybrid along-track and cross-track interference synthetic aperture radar (SAR) system. According to the method, a new baseline vector model is established for an onboard hybrid along-track and cross-track interference synthetic aperture radar. According to the model and the attitude angle information of an aerial carrier, the baseline vector of the hybrid interference SAR system at any time can be described. On the basis of the new baseline vector model, the to-be-calibrated parameters of the hybrid interference SAR system are modified, and then the calibration method applicable to the onboard hybrid along-track and cross-track interference synthetic aperture radar is provided. Based on the method, the calibration for the baseline length and two baseline angles is realized through calibrating the baseline component at a certain moment. Therefore, the complex formula calculation is avoided, and the method is more easily implemented.

The invention discloses an intelligent electric car testing bench used for environment sensing configuration and testing. The intelligent electric car testing bench comprises a frame body, three-axis moving assemblies, three-axis rotating assemblies, environment sensors, a middle sensing support, three-dimensional calibration assemblies and two-dimensional calibration assemblies, wherein the plurality of three-axis moving assemblies are arranged on the frame body, the middle sensing support is arranged on the middle part of the frame body, the middle sensing support is also provided with a plurality of three-axis moving assemblies, the three-axis rotating assemblies are arranged on the three-axis moving assemblies, the environment sensors are arranged on the three-axis rotating assemblies, and the three-dimensional calibration assemblies and the two-dimensional calibration assemblies are corresponding to the environment sensors. The intelligent electric car testing bench has the advantages that on-loop design of calibration and configuration schemes and related testing of vehicle environment sensors can be realized on expected vehicle types; data of the environment sensors under different calibration or configuration schemes is stored, and the calibration content under a plurality of conditions are further completed; in addition, the cost is lowered, the efficiency is improved, the materials corresponding to parts are reasonably selected, and the service lifetime is long.

The invention relates to a global calibration method and apparatus that are used for calibrating a system including a camera array and a rotary table. During execution, at least one calibration chessboard is arranged at the rotary table and the calibration chessboard can rotate with the rotary table. The method comprises: the rotary table is controlled to rotate and shot pictures of the calibration chessboard are obtained in more than two directions; according to the shot pictures, a positional relationship between cameras and the calibration chessboard and a positional relationship between cameras are determined; according to more than two shot pictures and a three-dimensional world coordinate system of the calibration chessboard, a rotation center of the rotary table is determined; on the basis of the positional relationship between the cameras and the rotary table, the positional relationship between the cameras, and the rotation center of the rotary table, a pose relationship between the cameras and the rotary table is determined. According to the method provided by the invention, the calibration chessboard is used for assisting the computer in calibrating the pose relationship between the camera array and the rotary table in the system. The hardware equipment cost is low; installation becomes simple and conveniently; and the method is easy to implement.

The invention provides an automatic calibration device of a static electric field sensor and a calibration method thereof. A three-dimensional electric field sensor test supporting seat is adopted so as to realize calibration and testing to a three-dimensional electric field sensor. Simultaneously, the device is also a multi-mode automatic calibration device, and compatibility and flexibility are good. Functions of automatic adjustment of a high voltage power supply output voltage, arbitrary arrangement of electric field measurement points and adjusting time intervals, automatic acquisition of electric field data, processing and the like are realized and calibrate efficiency and precision of the electric field sensor are greatly increased. A slide rail is used to connect a test pole plate structure and a shielding structure box body, and during calibration, operation is convenient and maintenance is easy. A conductive metal wire and an equal voltage division resistor string are arranged so as to increase the calibration precision. A temperature sensor and a humidity sensor are arranged in an electric field test box so that an important reference basis is provided for electric field sensor environment adaptability research.

The invention discloses a single-degree-of-freedom flexible fine adjustment mechanism-based micro-displacement sensor calibration device, belongs to the field of accurate fine adjustment and detection, and aims to solve the problems of poor repeated positioning accuracy and long-term stability of measurement in the prior art. The device comprises an adjustment frame, a piezoelectric driver and a calibration reference component, wherein the piezoelectric driver is fixedly arranged on the adjustment frame, and is used for driving a moving rod of the adjustment frame to move; the calibration reference component is fixedly arranged on the adjustment frame; the calibration reference component and a micro-displacement sensor to be calibrated are simultaneously used for measuring the output displacement of the moving rod. According to the calibration device, the moving rod capable of providing micro-displacement and a higher-accuracy sensor grating ruler used as a detection reference are provided, and the grating ruler and the micro-displacement sensor to be calibrated are simultaneously used for measuring the output displacement of the moving rod to realize the calibration of the micro-displacement sensor to be calibrated; the calibration device has the advantages of simple structure, high repeated positioning accuracy, high long-term stability and the like.