187 results about "Position shift" patented technology

The invention discloses a primary and secondary mirror combined detection system and method for a beam shrinking system, and belongs to the technical field of optical detection.The method comprises the steps that a first micro-spherical mirror and a second micro-spherical mirror are arranged, reflection light spots are captured through an interferometer, the position offset is calculated, and a first control instruction for adjusting the pose of a secondary mirror is generated; a dual-band light source is integrated in a detection light path, wavefront data and alignment monitoring data are collected, and temperature drift is corrected to obtain effective combined wavefront; an error separation model is constructed based on the primary mirror compensator parameter and the Zernike aberration coefficient, and a primary mirror surface shape error component and a secondary mirror offset error component are decoupled and separated by using a preset aberration coupling coefficient; feeding the error component back to a polishing process and a displacement table for closed-loop iterative correction until the RMS value and the PV value of the effective combined wavefront meet a preset imaging quality index; through precise positioning, error correction and decoupling separation, the precision and efficiency of primary and secondary mirror combination detection are improved, and targeted correction is realized.

The invention discloses a cutter state real-time monitoring and compensating method, system and equipment and a medium, and relates to numerical control precision machining. In the method, a cutting edge optical image, an acoustic emission signal time domain waveform, a vibration acceleration parameter and real-time temperature data of a cutting area of a cutter in the machining process are collected; measuring the maximum width and depth of a wear belt through an image to form a wear characteristic quantized value, and judging a wear over-limit state; judging the damage state based on the continuous ultralimit time of the instantaneous mutation rate of the acoustic emission signal; judging the abnormal vibration grade and state through vibration spectrum analysis; and inputting the vibration spectrum and the temperature data into a prediction model to obtain a position offset prediction quantity. And calculating a size deviation value according to a wear / damage state, calculating a coordinate offset according to vibration abnormity, generating a cutter geometric compensation instruction or a motion trail compensation instruction, and completing real-time compensation operation. According to the scheme, the fine abnormal change of the cutter in the machining process can be captured in time, and compensation is conducted according to the fine abnormal change.

The invention relates to the technical field of surface mounting, and discloses an SMT (Surface Mount Technology)-based patch vision correction method, which comprises the following steps: S1, a calibration stage: constructing a double-coordinate system mapping model based on a PCB (Printed Circuit Board) plane, and establishing a nonlinear distortion compensation matrix according to the patch thickness; s2, a pickup stage: a CCD shooting camera is arranged at the top of the suction nozzle, a top CCD is triggered to shoot when the suction nozzle picks up an element, and pin coplanarity data is extracted; s3, a positioning stage: setting a reference point at the top of the PCB, scanning the PCB reference point through a CCD, and calculating a deviation between an actual position and a theoretical coordinate by using an algorithm processor; and S4, compensation execution: the motion shaft system dynamically adjusts the mounting path according to the deviation vector. The visual correction method based on SMT pasting has the advantages of accurate pasting and the like, and solves the problems of pasting position offset, low efficiency and unstable precision caused by factors such as vibration of an element feeder, mechanical transmission errors and thermal deformation of a PCB (Printed Circuit Board) due to dependence on manual calibration in the existing SMT pasting process.

The invention discloses a motor insertion piece positioning detection method using optical recognition, and particularly relates to the technical field of motor manufacturing and detection. Collecting a high-resolution image containing the insert structure; carrying out image gray level enhancement and reflection interference suppression; extracting insert edge gradient information, and constructing an insert boundary point set; fitting the profile of the insert according to the boundary point set, and correcting the profile through a shape prior model; extracting barycentric coordinates and center positioning features of the inserts, calculating offsets delta X and delta Y and an angular deviation theta, and constructing a position offset vector V; the V is compared with a set tolerance model T, and whether the insertion piece is qualified or not is judged; an error distribution thermodynamic diagram is generated based on the offset data of the multiple punching sheets, and trend evaluation of the mold state and the material stability is achieved; according to the method, high-precision, full-automatic and visual detection of the sheet inserting position can be realized, and the sheet punching quality control level is improved.

The invention provides a camera-based AI visual recognition and prediction control method and related equipment, and the method comprises the steps: obtaining continuous image frames of a moving object, and recognizing the skeleton key point coordinates and appearance feature information of the moving object; inputting the skeleton key point coordinates and the appearance feature information into a preset time sequence neural network model to obtain a motion prediction track; performing space mapping on the centroid coordinates of the moving object according to the motion prediction trajectory, and determining focal length control parameters of the camera; meanwhile, angle mapping is carried out on the position offset of the moving object, and pan-tilt control parameters are determined; and tracking and shooting the moving object according to the focal length control parameter and the holder control parameter. Through the mode, the camera can complete the pre-adjustment of the focusing mechanism and the composition direction before the target motion trend occurs, thereby effectively reducing the delay error in the focal length switching process, and improving the clear imaging rate and composition stability of a high-speed motion main body.

The invention relates to the technical field of mechanical engineering and intelligent control, and particularly discloses a dynamic leveling method and system for a damping profiling icebreaking snow remover. The method comprises the steps that high-strength alloy impact toughness parameters and staggered rolling path parameters are collected, an icebreaking wheel set rigidity matching matrix is generated through optimization, and adjustable rigidity assignment is completed; acquiring road surface fluctuation data within a profiling distance based on a laser ranging device, and fusing multispectral and millimeter wave radar data to generate a three-dimensional dynamic terrain map; inputting the rigidity matching matrix and the dynamic terrain map into an LSTM mechanical simulation engine, calculating five-wheel-set dynamic pressure distribution and outputting real-time wheel set pressure parameters; the real-time pressure parameter is compared with the measured value of the sensor, and an oil cylinder stroke compensation instruction is generated to drive hydraulic leveling control; analyzing the three-dimensional position offset of the snow shovel and the ice breaking wheel, converting the three-dimensional position offset into a side row inclination angle parameter, and generating a multi-shaft torque cooperative control instruction; and generating a material wear characteristic spectrum through federal learning training, and dynamically correcting a path inclination angle and a rigidity compensation parameter. The ice breaking and snow removing device has the beneficial effects of improving ice breaking and snow removing efficiency, enhancing equipment stability and reducing material abrasion.

The invention provides a moving ship detection method based on spatial-temporal characteristics, which comprises the following steps: firstly, eliminating land and thick cloud regions through dual-threshold segmentation preprocessing, and adaptively extracting weak ship candidate targets in a water area by combining top-hat transform with sequential statistical filtering; combining detection results of each wave band, expanding the area of a ship candidate target, realizing signal enhancement and eliminating static false alarms, combining multiple frames of candidate targets, and carrying out filtering processing by utilizing a multi-direction rotation linear kernel by utilizing position offset characteristics of a moving target in five wave bands of a Gaofen-4 satellite due to imaging time difference; according to the method, real ships in smooth track distribution are reserved, isolated and randomly distributed false alarms or non-coherent track false alarms are eliminated, and stable and high-precision ship detection is effectively guaranteed while the low false alarm rate is kept.

The invention relates to the technical field of dental image shooting, and discloses a label-based intelligent positioning method and device, a positioner and a ray machine, and the method comprises the steps: collecting response signals of a plurality of induction labels of an imaging sensor aiming at a signal transmitted by a label positioner arranged on the ray machine, and receiving signal intensity and carrier phase information; the method comprises the following steps: estimating an estimated distance for any induction tag by fusing a linear relationship between an attenuation model of received signal strength and a carrier phase, and eliminating a single tag error by utilizing multi-point sampling in combination with the estimated distance and position information of all the induction tags and a position offset generated by a positioning imaging sensor relative to a ray machine, so as to realize submillimeter-level accurate positioning. The alignment accuracy and efficiency of the two are improved, so that the position is accurate when the dental X image is shot, and the imaging sensor is ensured to completely fall into the range of the projection area; the device is flexible in installation, low in cost, small in angle dependence, and suitable for low-power-consumption scenes where the size of the sensor in the oral cavity is limited and no independent power supply exists.

The utility model relates to the technical field of optical part machining, and discloses a sapphire special-shaped part concave-convex surface arc light chamfering machine which comprises an operation table, and a lifting seat, a servo motor, an adjusting arm and other components are arranged on the operation table. And switching of the machining angle and position of the sapphire special-shaped part can be achieved through the lifting base, the servo motor and the adjusting arm. The positioning piece is matched with the limiting piece, the special-shaped piece can be accurately positioned and fixed, the clamping wing and the correcting plate of the limiting piece clamp and fix the special-shaped piece under the action of the gear, and position deviation is prevented. The operation table is correspondingly provided with a concave grinding tool, a convex grinding tool and a rotating motor. According to the utility model, the problems that the stress is non-uniform when a handheld workpiece is chamfered, the manual repeated debugging operation is tedious, and the position deviation is easy to occur when a special-shaped workpiece is clamped in a one-way manner are solved, and the machining precision and efficiency are improved.

The utility model discloses a parallelism adjusting structure for a scientific-grade CMOS camera, and the structure comprises a parallelism adjusting assembly which comprises a camera body and an adjustable plate. The stable moving assembly comprises a fixing groove, a connecting groove, a vertical rod, a clamping groove and a sliding block; the fixing grooves are formed in the two sides of the adjustable plate respectively, the connecting grooves are formed in the two sides of the camera body respectively, the vertical rods are clamped between the inner sides of the vertically adjacent fixing grooves and the connecting grooves, the clamping grooves are formed in the inner side faces of the vertical rods, and the sliding blocks are slidably connected to the inner sides of the clamping grooves. By arranging the stable moving assembly, when the supporting parts are rotated one by one, moving force pushes the sliding block through the camera body, so that the sliding block moves in the clamping groove, the camera body is promoted to move in the direction of the vertical rod through the sliding block, and therefore the situation that the camera body is driven by rotation of the supporting parts to deviate is prevented; and the influence of position offset of the camera main body on parallelism adjustment is avoided.

To provide an optical sensor capable of performing highly accurate optical sensing of a scene.SOLUTION: The optical sensor includes a unit D1 including x blocks 11, for example, three (x = 3) blocks a, b, and c, each having a plurality of pixels 12 arranged in a first direction 11A in a plan view. The pixels 12 are arranged at a pixel pitch D1 in the first direction P1. The three blocks a, b, and c are arranged side by side in a second direction D1 orthogonal to the first direction D2, and are arranged to be shifted from each other by P1 / 3 in the first direction D1. For example, the light receiving elements 11A and 10b each including the units 10a corresponding to the number of stages of the TDI are arranged so as to partially overlap each other in the D1 in the first direction, and the optical sensing is performed using the blocks a and b in which the positional deviation of the pixels 12 is minimized. In addition, by increasing the size of each of the light receiving elements 10a and 10b in the second direction D2, inclination at the time of mounting, poor connection, and the like are suppressed.SELECTED DRAWING: Figure 10

The invention provides a position measurement device, a measurement method, a workpiece stage position compensation method, an exposure method and exposure equipment, and the measurement device comprises a first reflector, a second reflector, a first interferometer reference axis, a second interferometer reference axis and a data processing module. The first reflecting mirror and the second reflecting mirror are arranged at the bottom of the objective lens; the first interferometer reference axis is configured to measure a first horizontal displacement of the objective lens; a second interferometer reference axis configured to measure a second horizontal displacement of the objective lens; the data processing module is configured to determine the deflection angle of the objective lens according to the first horizontal displacement and the second horizontal displacement of the objective lens and the height difference between the first interferometer reference axis and the second interferometer reference axis. According to the invention, the deflection angle of the objective lens can be measured, so that errors caused by deflection of the objective lens can be compensated to the position of the workpiece table, and the influence of the position offset of the objective lens on the overlay precision can be reduced.

A kind of projector auto-focusing method based on spectral sensor and related equipment, in the method, the wavelength decomposition is carried out to reflected light signal, and light intensity value is obtained;The initial distance value between projector and projection surface is calculated;Acceleration data and angular velocity data are integrated to obtain position offset and attitude angle offset;Compensation distance is determined, and actual projection distance is calculated;Control stepper motor to drive lens assembly to move to the focusing position corresponding to target focal length value;Control stepper motor to drive lens assembly to reciprocate;New reflected light signal is reacquired after each reciprocation;Based on the preset mapping model, new reflected light signal is processed to obtain current measurement distance;When the deviation value between current measurement distance and preset best imaging distance is less than the preset threshold value for the first time, the focusing position corresponding to final measurement distance is determined as final focusing position. The precision of projector auto-focusing is improved, and then the definition of projection picture is improved.

A forming apparatus is provided. An application module performs detection of an end portion of a substrate and detection of a pattern region of the substrate, and applies a formable material to an application region of the substrate decided based on the detected pattern region. A planarization module performs detection of the end portion of the substrate and detection of an end portion of a member, and performs the planarization using the substrate and the member. A controller performs alignment between the substrate and the member based on the end portion of the substrate, the end portion of the member, and a positional shift amount between the pattern region and an outer shape of the substrate specified based on the end portion of the substrate detected in the application module.

The present embodiment provides a multi-charged particle beam drawing apparatus that suppresses a beam position shift on a sample surface. The charged particle beam drawing apparatus of the present embodiment is a multi-charged particle beam drawing apparatus including: a blanking aperture array substrate provided with a plurality of blankers that perform blanking deflection of a plurality of charged particle beams that constitute a plurality of beams; and a first shielding member disposed on a downstream side of the blanking aperture array substrate in a traveling direction of the plurality of beams, having a cylindrical portion through which the plurality of beams pass inside, and being composed of a high magnetic permeability material.

An optical scanning apparatus includes a semiconductor laser, a coupling lens, a polygon mirror, a motor, an optical scanning system including a first scanning lens with an optical surface, a housing, a cover, and a partition with an opening closed with the first scanning lens. Shifting amounts of a focus position of a beam with respect to a reference imaging plane in a main scanning direction are in relations ΔA<0 and ΔA<ΔB<ΔC, where ΔA mm and ΔB mm are shifting amounts when the semiconductor laser, the coupling lens, and the optical scanning system are at a normal ambient temperature and at an upper-limit ambient temperature, respectively, and ΔC mm is a shifting amount when the semiconductor laser and the coupling lens are at the normal ambient temperature and the first scanning lens is at a first temperature.

To provide a technique for estimating the period of substrate misalignment in a substrate processing system.SOLUTION: In one exemplary embodiment, a substrate processing system is provided. The substrate processing system includes a process module, a transfer module, a first measuring device, a second measuring device, a memory unit, and a control unit. The first measuring device is configured to acquire a first position of the substrate during a first period and / or a second position of the substrate during a second period. The second measuring device is configured to acquire a third position of the substrate during an intermediate period. The control unit is configured to estimate whether the substrate misalignment has occurred during the first period and / or the second period, or the intermediate period, using a first misalignment amount at the first position and / or a second misalignment amount at the second position, and a third misalignment amount at the third position.SELECTED DRAWING: Figure 20

The invention relates to the technical field of processing positioning, and discloses an intelligent positioning control system for a foam buffer piece die cutting process, and the system comprises an acquisition module which is used for acquiring a first surface gray level image; the calculation module is used for positioning a first MARK point center coordinate and a second MARK point center coordinate based on the first surface grayscale image and calculating a first X-direction deviation value, a first Y-direction deviation value and a first rotation angle deviation value; the compensation motion module is used for executing compensation motion; and the circulation module is used for re-collecting a second surface gray level image of the foam material which is compensated in place and calculating residual deviation values, when the residual deviation values are all smaller than a target deviation value, a punching instruction is sent, and otherwise, the compensation motion process is re-executed. The problems of position offset and rotation deflection angle caused by flexible deformation in the feeding process of foam materials are effectively solved, and the positioning precision and the production efficiency of foam buffer part die cutting are improved.

The application relates to a carrier position offset correction device and a control method. The carrier position offset correction device comprises a support frame, a rotary driving structure arranged on the support frame and used for driving the carrier to rotate, a carrier connected with the rotary driving structure and used for carrying a display substrate, a plurality of substrate supporting feet arranged on the carrier, and at least one position detection structure connected with the rotary driving structure and the support frame respectively and used for detecting the reset state of the carrier. The position detection structure is combined with the rotary driving structure, so that the cost can be effectively controlled without sacrificing the precision, the manufacturing and maintenance complexity is reduced, the energy consumption is reduced through the accurate control system, and the overall work efficiency is improved.

The application discloses a kind of big target accurate positioning method based on multi-line laser radar, comprising the following steps: S1, with irregular three-dimensional target as an example, using two multi-line laser radar, vertical installation is different, make up the problem of multi-line laser radar in vertical direction is sparse, realize the accurate positioning of target in three-dimensional space coordinate, scanning target obtains the point cloud data of target.The application is used in the calculation target actual position and correct position deviation, standard shape template is made, only the position information of real-time point cloud is kept, and the accuracy and stability of the calculation coordinate and deviation are improved by using standard template instead of real-time point cloud.RANSAC plane fitting, ICP point cloud registration and other methods are used in the point cloud processing process, such methods are adaptable to target point clouds of different qualities, improve the stability in the process of point cloud processing, and the final positioning accuracy can be controlled within 20mm.

The utility model relates to the field of laser transmitting modules, and discloses a laser transmitting module convenient to install and debug, which comprises an arc-shaped adjusting plate, the top surface of the arc-shaped adjusting plate is rotatably connected with a transmitting module outer shell, and the outer surface of the arc-shaped adjusting plate is provided with a second arc-shaped adjusting plate. The top surface of the second arc-shaped adjusting plate is fixed to the bottom surface of the transmitting module outer shell, a connecting limiting assembly connected with the second arc-shaped adjusting plate is arranged on the outer surface of the arc-shaped adjusting plate, and a driving motor drives a gear to rotate, so that the second arc-shaped adjusting plate is driven by an arc-shaped rack to rotate leftwards or rightwards. In the rotating process of the second arc-shaped adjusting plate, the connecting limiting assembly can ensure the stability of the second arc-shaped adjusting plate and avoid position deviation during rotation, so that the adjusting precision is improved, the transmitting module outer shell of the device is convenient to install and adjust, the transmitting module outer shell can be adjusted to a specific horizontal angle and a specific inclined angle according to actual requirements, and the flexibility and adaptability are greatly improved.

The utility model provides a filter stick packaging strip box defect detection device which comprises a mounting base, the section of the mounting base is in a U shape, a conveying belt is mounted on the inner side of the mounting base, a filter stick packaging strip box is placed on the conveying belt, guide assemblies are arranged on the two sides above the conveying belt, and two sets of symmetrically-arranged fixing plates are mounted on the inner side of the mounting base. A positioning plate is installed between the two sets of fixing plates, a detection opening is formed in the positioning plate, an assembling base is installed above the installing base, an industrial camera is installed below the assembling base through a connecting assembly, and the position of the shooting end of the industrial camera corresponds to the position of the detection opening; according to the utility model, the whole structure is simple, the use is convenient, the detection port is matched with the industrial camera, a fixed shooting visual angle is ensured, and a basic detection reference object is established, so that the interference of other factors is reduced, the accuracy of a detection result is improved, and the guide assembly is matched, so that the detection error caused by the movement or position offset of the strip box is reduced.

An assembly, system and method for compensating a crane position offset error based on wheel float by viewing, with an optical sensor located on a trolley on the crane, a target or target shape adjacent a storage rack containing a vertically stored mill roll and determining a positional compensation signal based on a separation or offset of a center of a field of view of the sensor from a center of the target shape. The assembly, system or method compensates for the crane position offset error by moving the crane, as instructed by the positional compensation signal, a distance equal to the separation or offset of the center of the field of view of the sensor from the center of the target.

This invention relates to a method, apparatus, equipment, and storage medium for collaborative control of laser marking on production lines. The method includes acquiring a synchronization pulse signal synchronized with the production line displacement; triggering an image acquisition device to capture a motion image of the target workpiece using the synchronization pulse signal; identifying and calculating the positional offset between the real-time position of the workpiece and a preset marking reference point in the motion image; performing synchronous translation transformation on all coordinate points in a pre-stored theoretical marking path based on the positional offset; counting pulses based on the synchronization pulse signal; and comparing the obtained real-time pulse count value with a preset marking trigger threshold. This invention, based on real-time visual positioning and dynamic correction of the marking path, effectively overcomes marking deviations caused by workpiece position fluctuations, improving the stability of the marking process. Through online judgment and closed-loop control of marking quality, automatic identification and rejection of defective workpieces are achieved, ensuring the consistency of the final product quality.

The invention provides a surface type determination method, apparatus and device, and a computer storage medium. The method comprises the steps of obtaining an actual clamping pressure applied to an element fixing mechanism by a to-be-measured optical element, and an initial surface type point cloud under the actual clamping pressure; based on the actual clamping pressure and a preset deformation relation, the position offset of at least one point cloud point in the initial surface type point cloud is determined, and the deformation relation represents the deformation of at least one point on the to-be-measured optical element under different clamping pressures; the positional offset is applied to at least one point cloud point in the initial face profile point cloud to generate a compensated face profile.

The utility model belongs to the technical field of bending machines, and particularly relates to a bending machine angle correction device capable of preventing bending deviation, which comprises a bending machine main body, an oil cylinder is arranged at the upper end of the bending machine main body, and the output end of the oil cylinder is connected with a lifting plate; according to the bending machine angle correction device capable of preventing bending deviation, an adjusting assembly is arranged between a lifting plate and an upper die, in the long-term use process of the upper die, the height change is monitored in real time through two sets of distance sensors, and when the numerical value of one end exceeds a set value, the numerical value is fed back to a control circuit board in a control panel; then a driving motor on the corresponding side is controlled to be started, so that the output end of the driving motor drives a gear disc to be meshed with a tooth groove, an adjusting frame is driven to be adjusted along the interior of an adjusting groove, the upper die is further driven to conduct height adjustment, and therefore the angle of the upper die and the angle of a bending head are corrected; and the phenomenon of position deviation in the bending process is avoided.

The utility model belongs to the technical field of laser gradienters, and discloses a center fine adjustment structure of a laser gradienter, which comprises a rotary base, a base cover is arranged on the rotary base, and a gradienter main body is mounted on the base cover; a fine adjustment movable opening integrally formed with the base cover is formed in the rear side of the top of the base cover, a stroke limiting opening integrally formed with the base cover is formed in the front side of the top of the base cover, and the stroke limiting opening and the fine adjustment movable opening are of concentric arc-shaped structures. According to the scheme, through the structural design of the arc-shaped fine adjustment movable opening and the stroke limiting opening which are concentric and the synergistic effect of the fine adjustment moving assembly and the fine adjustment sliding block, the rotating base can accurately and relatively rotate around the fixed circle center; the problem of center position deviation caused by inconsistent movement tracks in a traditional fine adjustment structure is effectively avoided, and the measurement precision of the laser level meter is greatly improved.

The application discloses a motor insert positioning detection method using optical recognition, and particularly relates to the technical field of motor manufacturing and detection; a high-resolution image containing an insert structure is collected; image grayscale enhancement and reflection interference suppression are performed; insert edge gradient information is extracted, and an insert boundary point set is constructed; the insert contour is fitted according to the boundary point set, and contour correction is performed through a shape prior model; insert barycenter coordinates and center positioning features are extracted, offset amounts DeltaX, DeltaY and an angle deviation theta are calculated, and a position offset vector V is constructed; V is compared with a set tolerance model T to determine whether the insert is qualified; and an error distribution heat map is generated based on multiple insert offset data to realize trend evaluation of the mold state and material stability; the method can realize high-precision, full-automatic and visual detection of the insert position, and improves the insert quality control level.

The invention belongs to the technical field of geometric quantity precision measurement of optical measurement and machine vision, and discloses a method for calibrating non-circular distortion of a feature image in deep hole inner diameter measurement. According to the invention, calibration of non-circular distortion of the feature image can be realized; a deep hole inner surface feature image distortion and calibration model considering axis position deviation and angle deviation is established, and the mapping relation between a light propagation path and the geometrical morphology of the inner wall is accurately described; the accuracy and feasibility of the model and the detection method are verified through experiments and simulation, accurate calibration of non-circular distortion of the feature image in deep hole inner diameter measurement can be achieved, and independence and coupling interference of position deviation and angle deviation are effectively compensated.

This utility model discloses a rail coating thickness measuring instrument, relating to the field of rail inspection technology. The instrument includes a mounting plate, a testing mechanism, and a positioning mechanism, with a rail body positioned below the mounting plate. The instrument moves along the rail body via casters on the mounting plate, eliminating the need for manual operation. This significantly reduces the physical strain and difficulty of prolonged hand-held operation and avoids positional shifts and data fluctuations caused by hand tremors, ensuring the stability and accuracy of coating thickness measurement data. It is particularly suitable for continuous testing of long-distance rails, minimizing interruptions. Simultaneously, guide wheels embedded in grooves on both sides of the rail body provide precise positioning for the thickness measuring instrument as it moves the mounting plate, preventing lateral shift during testing.