50 results about "Laser measurement system" patented technology

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 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 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 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.

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 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.

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 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.

This invention provides a laser measurement system for geological profile thickness, relating to the field of laser measurement technology. It includes a support assembly, a measurement assembly, and a connecting assembly. The support assembly includes an upper support and a lower support. The upper support is rotatably connected to a frame, which has symmetrical perforations. The lower support is rotatably connected to a lower plate. The connecting assembly includes a square shaft, which is connected to the frame by bearings. The square shaft passes through square holes on the central shafts of two rollers. One end of each of two steel wire ropes is connected to the central shaft of the corresponding roller. The two steel wire ropes are wound around the central shafts of their respective rollers and pass through the corresponding perforations. This invention addresses the shortcomings of existing technologies by developing a laser measurement system for geological profile thickness. This invention utilizes a round-headed rod to clamp the steel wire ropes, keeping the lifting plate perpendicular to the steel wire ropes, allowing the laser rangefinder to measure the rangefinder plate perpendicularly, resulting in more accurate measurements.

The invention discloses a motor shaft laser measurement method and laser measurement system capable of preventing current electrolytic corrosion, and belongs to the technical field of laser measurement. The detection method comprises the following steps: S01, fixing a to-be-detected motor shaft in a first posture; s02, scanning the motor shaft by adopting a laser sensor to obtain first measurement data, and sending the first measurement data to a data processing device; s03, fixing the motor shaft to be detected in a second posture; s04, scanning the motor shaft by adopting a laser sensor to obtain second measurement data, and sending the second measurement data to a data processing device; and S05, weighting the first measurement data and the second measurement data to obtain third data, comparing the third data with a preset value, and judging whether the size of the motor shaft is qualified or not. According to the detection method, size measurement is carried out on the two junctions of the annular groove of the motor shaft and the main shaft under the better detection condition, and the detection accuracy is improved through measurement data fusion processing.

The invention provides a section thickness laser measurement system for geological survey, which relates to the technical field of laser measurement and comprises a support assembly, a measurement assembly and a connection assembly. The support assembly comprises an upper support and a lower support, the upper support is rotationally connected with a frame, symmetrical penetrating holes are formed in the frame, and the lower support is rotationally connected with a lower square plate. The connecting assembly comprises a square shaft, a square shaft bearing is connected with the frame, the square shaft penetrates through square holes in center shafts of the two wire rollers, one ends of two steel wire ropes are connected with the center shafts of the corresponding wire rollers respectively, and the two steel wire ropes are wound around the center shafts of the corresponding wire rollers respectively. The two steel wire ropes penetrate through the corresponding penetrating holes respectively. Aiming at the defects in the prior art, the section thickness laser measurement system for geological survey is developed, the steel wire rope is clamped by the round head rod, the lifting plate is kept vertical to the steel wire rope, the laser range finder vertically measures the range finding plate, and the measurement is more accurate.

The present invention relates to the field of machine vision measurement technology, and in particular to a laser triangulation method and sensor calibration structure. The optical axis of the imaging lens is positioned on the side of the board-level camera closest to the laser line. This overcomes the aforementioned shortcomings of the prior art, which lack universal, high-precision laser measurement systems. This method significantly improves the sensor's measurement performance under the same hardware conditions, reduces the sensor's nonlinear error, and provides more stable measurement results.

The invention provides a manual steering 21 geometric error laser measurement system and method, the system comprises a measurement unit, a light steering unit and a geometric error sensing unit, the light steering unit comprises a positioning device and a steering mirror, and the positioning device is used for positioning the steering mirror; the geometric error sensing unit comprises a first shell, a first connector, a second connector, a precise angle adjusting device, a coarse adjusting device and a fixing device; the measuring unit and the positioning device are respectively installed on a machine tool platform, and the geometric error sensing unit is installed beside a machine tool spindle through the first connector or the second connector, the precise angle adjusting device, the coarse adjusting device and the fixing device and does not rotate along with the machine tool spindle. The measuring unit and the geometric error sensing unit are mutually combined to measure X-axis, Y-axis and Z-axis six-degree-of-freedom errors and three-axis perpendicularity errors. According to the invention, the problems of high manufacturing difficulty, high cost, low measurement precision and the like of equipment adopted by an existing measurement system can be solved.

The invention discloses a laser measuring system for shoulder-brachial three-dimensional data, which comprises a horizontal support rod, a fixing device arranged at one end of the support rod and used for fixing the support rod in front of the chest of a subject, and a laser ranging and angle measuring device arranged at the other end of the support rod, and the master control device is arranged on the outer side of the laser distance measuring and angle measuring device, is connected with the laser distance measuring and angle measuring device and is provided with a key and a display screen. The invention further provides a laser measurement method of the shoulder-humeral three-dimensional data, and the laser measurement system is adopted to carry out laser measurement of the shoulder-humeral three-dimensional data. The shoulder and humeral three-dimensional data can be measured and displayed, auxiliary analysis and judgment of up-and-down and front-and-back position changes and inward movement of the shoulder blade are facilitated, auxiliary analysis and judgment of up-and-down and front-and-back position changes and inward movement of the humerus head are facilitated, and auxiliary analysis and judgment of comprehensive up-and-down and front-and-back position changes and inward movement of the shoulder blade and the humerus are facilitated.

The invention relates to a line laser measuring system and a method for judging cutting yield and precision. A line laser module is used for measuring whether a plane of an object to be measured is flush or not and comprises a laser transmitter, a sensor module and an analysis and calculation module. The laser emitter is arranged on one side of the plane and used for emitting laser rays in the direction perpendicular to the side; the sensor module is used for simultaneously sensing a plurality of reflections of the laser ray of the laser emitter at a depth relative to the plane; and an analysis and calculation module for analyzing and calculating the plurality of reflections to determine whether the plane is a flush plane.

The utility model provides a deformed steel bar laser measuring system which comprises a measuring table and four supporting columns, the four supporting columns are respectively fixed on the periphery of the lower surface of the measuring table, a measuring device is arranged on the upper surface of the measuring table, and the measuring device comprises a measuring box and a laser measuring instrument; the measuring box is fixed to the upper end of the measuring table, a feeding port and a discharging port are formed in the left side and the right side of the measuring box respectively, baffles are arranged at the feeding port and the discharging port respectively, and the baffles are fixed to the side wall of the measuring box. The laser measuring instrument is fixed at the top of the measuring box, a measuring window for the laser measuring instrument to measure is arranged at the top of the measuring box, the laser measuring instrument is used for detecting the deformed steel bar on the measuring table, and a controller is arranged on the front surface of the measuring box. The high-precision and automatic measurement of the deformed steel bar is realized, and the measurement efficiency and precision are improved.

A laser measuring system for a substrate processing system includes a substrate support including a baseplate including a bore and a ceramic layer attached to the baseplate by a bonding layer. A laser assembly includes a laser configured to transmit light through the bore in the baseplate, through the ceramic layer, and onto a back side surface of a substrate. A spectrometer is configured to receive reflected signals from the substrate through the bore. A controller is configured to determine optical path lengths of the reflected signals from the substrate and to calculate a parameter of the substrate based thereon.

A laser measurement system including a laser transmitter and a laser receiver is provided. The laser transmitter includes a reflective surface and one or more laser sources for projecting an initial laser pulse. The laser receiver includes a first reflective surface for reflecting the initial laser pulse to provide a first reflected laser pulse, and a second reflective surface for reflecting the initial laser pulse to provide a second reflected laser pulse. The laser receiver also includes a photodetection unit for receiving: 1) a first double-reflected laser pulse generated by reflecting the first reflected laser pulse from the reflective surface of the laser transmitter, and 2) a second double-reflected laser pulse generated by reflecting the second reflected laser pulse from the reflective surface of the laser transmitter. The laser receiver determines an orientation angle associated with the laser receiver based on the first and second double-reflected laser pulses.

The application discloses a laser measuring system and a measuring method for ring piece machining length measurement, and belongs to the technical field of size detection. The laser measuring system and the measuring method for ring piece machining length measurement comprise a base, the upper end of the base is provided with a pressing plate, and a second movable hole with a second detection arm is longitudinally arranged in the base. The application solves the problems of the existing stone honeycomb board, such as large occupied area, difficult equipment placement and poor fluidity. After the second hydraulic telescopic rod is elongated to push, the second detection arm can simultaneously drive the second clamping piece and the first abutting roller to move towards the ring piece until the second pressure sensor detects the pressure and gives a signal of stopping contraction to the second hydraulic telescopic rod. The single-position second laser measuring instrument respectively irradiates on the second clamping piece and the rotatable shielding piece to directly detect the inner diameter and the outer diameter of the ring piece.

The invention provides a large-diameter multi-type pipeline aligning method and tool, and belongs to the technical field of pipeline construction.A laser measurement system is established to collect pipeline axis deviation data in real time, and the optimal adjustment amount of each clamping point is calculated based on a multi-point coordination control algorithm and a double-layer game optimization model; the two-way lead screw nut transmission system is used for driving the four clamping V-shaped blocks to conduct multi-point synchronous clamping and positioning on the bottom and the end opening of the pipeline, the rear jacking mechanism is matched to prevent axial displacement, and the position of each clamping mechanism is dynamically adjusted through the real-time feedback control system according to the measurement result to achieve automatic centering of the axis of the pipeline. The traditional artificial experience adjustment is converted into an accurate control process based on mathematical optimization, and the technical problems that the alignment precision of various large-diameter pipelines is difficult to guarantee, and the adjustment process is complex and low in efficiency are solved.