930 results about "Laser line" patented technology

The invention relates to the technical field of intelligent detection, in particular to a container surface damage detection method and device based on machine vision, and the device consists of a multi-modal data acquisition module, a dynamic compensation processing module, a multi-modal data fusion module and a damage classification and positioning module. The multi-modal data acquisition module generates a high-density three-dimensional point cloud through double-laser line scanning, and acquires a multispectral image, an infrared thermogram and a real-time motion state. The dynamic compensation processing module integrates an optical flow method and acceleration data to realize sub-pixel-level motion compensation, and combines adaptive exposure control to optimize the imaging quality under complex illumination. The multi-modal data fusion module strengthens defect feature expression through space-time alignment and a double-branch collaborative attention mechanism, and model parameters are reduced through lightweight network design. And the damage classification and positioning module adopts an improved deep network to realize defect classification and complete millimeter-level three-dimensional positioning. The automatic detection requirement of a port is met, and the problems of poor container detection precision, poor adaptability and the like are solved.

The invention belongs to the technical field of three-dimensional measurement, and discloses a 3D laser line scanning system based on a point cloud positioning algorithm and a control method. The method comprises the following steps: acquiring environment initial point cloud data and scanning target information; carrying out feature extraction, constructing an environment feature description model, carrying out three-dimensional space partitioning processing, carrying out regional reflectivity feature analysis, and constructing a space reflection feature model; adaptive optimization configuration is carried out on the laser scanning parameters, and a scanning strategy is generated; scanning path dynamic planning is carried out on the scanning target information, scanning density distribution calculation is carried out, and a scanning path is generated; performing laser line scanning control by using the scanning path and the scanning strategy, and performing scanning data quality real-time monitoring to obtain scanning quality evaluation data; scanning parameter iterative optimization is carried out on the scanning quality evaluation data, point cloud data real-time fusion reconstruction is carried out, a high-precision three-dimensional model is generated, the modeling precision is improved, and meanwhile the system resource utilization efficiency is optimized.

The invention relates to the technical field of optical nondestructive testing equipment for the sealing performance of a blueberry bottle opening, in particular to an optical nondestructive testing device and method for the sealing performance of the blueberry bottle opening. According to the technical scheme, the optical nondestructive testing device for the sealing performance of the blueberry bottle opening comprises an optical testing device, mounting grooves, a lead screw, a mounting support, a mounting ring, a Fresnel lens, a micrometer caliper, a double-color laser line light source and a rotating motor, and the mounting grooves are formed in the two sides of the interior of the optical testing device; compared with a traditional optical nondestructive testing device for the sealing performance of the blueberry bottle opening, a single light source or a simple lens group is mostly adopted, a 360-degree annular area of the bottle opening is difficult to cover, illumination on the edge of the bottle opening or a complex curved surface area is insufficient, and tiny defects are prone to being omitted; according to the optical nondestructive testing device for the sealing performance of the blueberry bottle opening, the double-color laser line light source is matched with the Fresnel lens array, multispectral reflection data are synchronously collected, the surface micro-mark contrast is enhanced by utilizing wavelength difference, and the monochromatic light detection sensitivity is effectively improved.

According to the metal plate self-adaptive straightening method and technology based on the line laser contourgraph, the laser scanning contourgraph is arranged above a feeding part of a straightening machine, a line laser transmitter and an image sensor are arranged in the laser scanning contourgraph, and the line laser transmitter projects laser lines to a metal plate; the image sensor is used for capturing a plate image with a laser reflection light strip to assist the straightening control system to adjust the pressing roller, straightening of the metal plate can be adjusted in real time, and the straightening precision is improved; image data collected by an image sensor is transmitted to a data processing module, and the data processing module analyzes an image to obtain actual contour data of a plate before straightening; the actual contour data are compared with a preset ideal straightened plate contour model, the deviation value of each point is calculated, and a deviation matrix is generated; the straightening machine control system controls the position conditions of all the pressing rollers independently according to the deviation matrix, the accuracy of plate straightening can be greatly optimized, and continuous adjustment can be achieved.

Disclosed in the present invention is an apparatus for measuring the thickness of heat insulation cotton after hot pressing. The apparatus comprises an inspection platform, and a conveyor belt used for conveying heat insulation cotton, wherein the conveyor belt closely passes over the top plane of the inspection platform. The apparatus further comprises: a thickness measurement assembly, which is used for measuring the thickness of the heat insulation cotton when the conveyor belt stops; and a surface inspection assembly, which comprises a laser scanning portion and an image collection portion, wherein the laser scanning portion obliquely emits a laser line to the surface of the heat insulation cotton and moves along the surface of the heat insulation cotton, and the image collection portion is located right above the heat insulation cotton and performs image collection on the trajectory of the laser line. The present invention can measure the thickness of heat insulation cotton by means of a thickness measurement assembly, and can further perform image collection on the trajectory of a laser line by means of an image collection portion, and therefore the surface quality of the heat insulation cotton can be inspected on the basis of a change in the laser line in an image, and then in combination with the measurement of the thickness of the heat insulation cotton, the range of heat insulation cotton inspection can be wider, and inspection results are also more objective.

The invention provides a steel plate surface defect detection method and system based on multi-source data fusion, and relates to the technical field of steel production automatic detection.The method comprises the steps that water stain pretreatment is conducted on the surface of a steel plate, the residual humidity is reduced to be below a preset low humidity threshold value, and a dry surface is obtained; based on the dry surface, collecting multi-source data through a 3D laser line scanning camera and a 2D industrial line scanning camera which are synchronously triggered, obtaining line scanning laser point cloud data, a line scanning reflectivity gray level image, a line scanning depth gray level image and an area array reflectivity color image, and establishing a space corresponding relation among the multi-source data; and forming a multi-source data set based on the spatial correspondence among the multi-source data. According to the method, a high-precision and high-robustness steel plate surface defect detection system covering the whole detection process is constructed by eliminating water stain interference, unifying a multi-source data reference, optimizing data quality, accurately identifying defects and realizing automatic feedback and data closed loop.

The invention relates to the technical field of optical measurement and metering equipment, in particular to an on-line precision calibration method for a laser line module in a high-low temperature environment, which comprises the following steps: acquiring horizontal and vertical offsets of a projection light spot of the laser line module, and collecting the temperature of the position of a laser transmitter; respectively calculating a horizontal offset interference degree and a vertical offset interference degree at each acquisition moment, and further obtaining a horizontal interference ratio and a vertical interference ratio; according to the change trend of the horizontal offset interference degree and the vertical offset interference degree within the preset duration before each acquisition moment, the horizontal and vertical interference variation of each acquisition moment is obtained, and then the compensation regulation factors of the horizontal offset and the vertical offset of each acquisition moment are obtained, and the horizontal offset and the vertical offset are compensated. And compensation correction values of the horizontal offset and the vertical offset are obtained, so that the projection precision of the laser line module is calibrated. According to the invention, the precision of projection calibration of the laser line module can be improved.

The invention relates to the technical field of 3D vision measurement, and discloses a 3D binocular line laser weld contour data acquisition method and system. Two core steps of obtaining surface reflection characteristic information of a to-be-scanned area and adjusting output intensity of laser rays projected by a line laser device at different positions of the to-be-scanned area according to the surface reflection characteristic information are introduced, so that the problem that when a high-reflection welding seam is processed by a traditional method, the laser rays cannot be projected by the line laser device is effectively solved; the problem of image overexposure or underexposure caused by dramatic change of illumination characteristics is solved.

The invention discloses an anti-interference target laser ray extraction method. The method comprises the following steps of S1, performing Gaussian filtering processing on an image; s2, determining possible starting and ending position points of the target laser ray: the starting and ending position points of the target laser ray are respectively b and b1, the difference value of two adjacent pixel gray values is diffval, and the determination method of b and b1 is as follows: the determination method of b: b-a < = diffval and c-b > = diffval; the determination method of b1 is as follows: b1-a1 is greater than or equal to-diffval, and b1-c1 is less than or equal to-diffval; wherein a and c are two adjacent points on the two sides of b in the width direction of the laser line respectively, and a1 and c1 are two adjacent points on the two sides of b1 in the width direction of the laser line respectively; s3, setting the line width of a target laser line; s4, extracting the center point of the target laser ray: extracting the center of the laser ray by using a gray gravity center method; s5, extracting a target laser ray; the method can be applied to the 3D laser contourgraph to extract correct laser rays under the condition of interference, and serious loss of industrial production caused by inaccurate extraction of the laser rays is avoided. According to the invention, the laser line extraction precision is improved.

The invention discloses a fuel cell stack core straightness and perpendicularity detection device and method. A reference surface is positioned through a visual camera, and a transmission mechanism drives a laser line scanning instrument to perform line scanning point taking on an upper end plate and fit a reference plane; moving a visual camera through an X-axis or Y-axis transmission mechanism, scanning a long-edge extension line and a short-edge extension line of the upper end plate on a reference surface of the upper end plate along the horizontal direction, obtaining an intersection point, determining a coordinate origin, and performing reference determination by taking the long-edge extension line and the short-edge extension line as X-direction or Y-direction reference of a coordinate system; the transmission mechanism drives the laser line scanning instrument to carry out line scanning on the straightness of the side edge of the reactor core assembly, straightness line scanning data are obtained, line scanning point position coordinate values are obtained, data analysis is carried out according to the coordinate values, and compared with the prior art, high-precision detection of the straightness and perpendicularity of the fuel cell stack core is achieved, and the detection precision is improved. And the assembly quality and performance of the reactor core assembly are ensured.

The invention discloses a depth and color fused true color three-dimensional point cloud acquisition method and system, and the method comprises the steps: setting a plurality of lasers to emit specific spectrum laser, enabling the specific spectrum laser to be reflected by the surface of an object, and filtering the specific spectrum laser through a narrow-band optical filter of a corresponding wave band, thereby enabling a corresponding sensor to only receive a single-spectrum laser line emitted by a corresponding laser emitter. A laser center point position and an intensity response value are extracted through a sub-pixel-level laser line refinement technology; calibrating the unified measurement coordinate system through sensor pose calibration; according to the light transmittance of an optical filter, spectral response characteristics of an image sensor and the like, correcting and compensating the intensity response value, calculating a compensation factor to obtain a color value of a measurement point, fusing a three-dimensional coordinate with corrected color information, outputting true color point cloud data, and presenting depth and color information of an object at the same time. The three-dimensional information and the color information of the object are synchronously obtained, so that the measurement data contain rich spectral characteristics.

The invention provides a cement conveyor volume measurement method based on deep learning point cloud segmentation. The method comprises the following steps: obtaining 3D point cloud data by using a laser line scanning 3D camera, and determining RGB values of pixels corresponding to the 3D point cloud data to obtain 3D point cloud with color features; inputting the 3D point cloud with the color features into an improved Point-Net + + neural network for 3D point cloud segmentation, and obtaining 3D point cloud data only containing the cement surface in the conveyor after segmentation; constructing a triangulation network based on the cement irregular surface in the segmented 3D point cloud data by adopting a triangulation method, and performing volume calculation according to the constructed triangulation network; wherein the improved Point-Net + + neural network is constructed on the basis of a framework of an original Point-Net + + point cloud segmentation network, and comprises a core point convolution, a context sensing module and a Focal Loss loss function. Therefore, the performance of a point cloud segmentation algorithm is improved, and even under complex conditions, the surface point cloud data of the cement material in the conveyor can still be accurately segmented for volume measurement.

The utility model discloses a magnetic leveling device of a pendulum bob type laser demarcation device, which comprises a hanging bracket and a pendulum body hung in the hanging bracket, a magnetic damping body consisting of a plurality of magnets is arranged on the hanging bracket according to a Halbach array, and a magnetic field which is made of non-magnetic conductive materials and can cut magnetic lines in a magnetic field generated by the magnetic damping body is arranged on the pendulum body. The utility model aims to provide a damping piece which adopts two different forms of Halbach arrays to generate magnetic damping, and compared with the existing common magnet arrangement scheme, the magnetic flux is obviously enhanced, so that a stronger magnetic damping effect is generated, and the magnetic damping effect is improved. The magnetic leveling device can effectively prevent the swinging body from swinging excessively, so that the leveling time is effectively shortened, the leveling speed and precision of the laser demarcation device are further improved, and the working efficiency is remarkably improved.

The invention discloses a plug-and-play Rydberg atom preparation device based on a three-photon absorption method, which comprises a laser generator, a laser input module, a laser detector, three frequency stabilization modules and a temperature and humidity control module, and is characterized in that the laser generator is used for preparing laser to be measured; the input module is used for transmitting and introducing laser; the saturated absorption frequency stabilization module, the electromagnetic induction transparent frequency stabilization module and the heating electromagnetic induction transparent frequency stabilization module all adopt a glass bonding technology to build frequency stabilization light paths; the laser detection device is used for detecting laser lines in the saturation absorption frequency stabilization module, the electromagnetic induction transparent frequency stabilization module and the heating electromagnetic induction transparent frequency stabilization module and locking the laser frequency corresponding to the specific wavelength. According to the invention, a frequency-stabilized light path is built by using a glass bonding technology, so that devices and the size are greatly reduced, and the integration level of a light path system is greatly improved; moreover, the degree of freedom of device adjustment can be reduced, and the reliability and stability of a laser frequency stabilization optical path are effectively improved.

The invention relates to the technical field of underwater operation equipment, solves the problems that existing dam underwater crack repairing depends on divers or complex equipment, the automation degree is low, the construction period is long, the comprehensive cost is high and the adaptability is poor, and particularly relates to concrete dam underwater crack repairing and leaking stoppage equipment which comprises a robot for underwater cruise, and the robot comprises a machine body; the cruise vision module comprises a foresight navigation lens group, a look-around lens group, a bottom wide-angle lens, an active illumination system, an obstacle avoidance sonar system and a topographic mapping sonar; the crack detection module comprises a crack scanning ultrasonic detector, a high-resolution strip-shaped scanning lens group, a laser ray scanner, a multispectral imager, a laser distance measuring sensor, a water flow sensor and an attitude sensor, the crack repairing module comprises two groups of mechanical arms for punching and grouting, and the central controller controls the robot to execute. Crack filling, structure bonding recovery and long-acting sealing are achieved, and meanwhile the construction difficulty and the comprehensive cost are reduced.

Provided is a handheld device and a method for detecting weld defects on a weld surface. The handheld device projects a thin beam laser light on the weld surface using a laser emitter. A processor receives the projected thin beam laser light from a laser receiving sensor, which indicates captured contours of the weld surface. The captured contours are processed to filter laser lines and extract contours. The extracted contours are utilized to classify a type of weld surface such as, surface joints, butt joints, corner joints, and tee joints. The processor, upon classifying, automatically adjusts angle and position of the laser light to be projected on the weld surface and detects deviation patterns by employing an ensemble of a laser line extraction process and a pixel width measurement process. The processor determines the detected deviation patterns as one or more defects on the weld surface that is being inspected.

The invention provides a hand-eye calibration method for improving tracking and positioning precision of a line laser contourgraph, which comprises an execution mechanism, the line laser contourgraph, a calibration plane and a calibration block, and comprises the following steps of: adjusting the line laser contourgraph to be vertical to the calibration plane and a laser line to fall on a calibration straight line; collecting a blind area information set for calibration; obtaining an original point of the line laser contourgraph; obtaining a laser angular bisector direction of the line laser contourgraph; and obtaining a coordinate system conversion relation between the line laser contourgraph and the tail end of the execution mechanism. According to the technical scheme provided by the invention, the position of the calibration block in the laser plane of the laser contourgraph is adjusted to form a blind area shielded by the laser, so that the coordinate system transformation matrix of the laser of the line laser contourgraph and the coordinate system of the execution mechanism is calibrated, and the laser position posture of the line laser contourgraph is accurately controlled; high-precision calibration objects do not need to be customized, and operation is easy and convenient.

The application discloses a parallel laser line scanning device and a method for measuring crack width and spalling area. The device includes a laser source configured to emit two beams of laser light in parallel to each other to scan a surface; a camera configured to collect an image of the scanned surface, and the camera comprising a lens and an image sensor; a positioning rod; and a controller configured to process an image of scanned surface to obtain a pixel scale of a crack or three-dimensional coordinates of contour points of a spalling, and determine an actual crack width in the scanned surface according to the pixel scale of the crack, or determining an actual spalling area according to the three-dimensional coordinates of the contour points of the spalling. The device facilitates faster and more objective evaluations of building conditions, contributing to improved structural health monitoring and maintenance decision-making.

The invention provides a laser linewidth measurement method and device based on digital decoherence, and is suitable for the technical field of laser linewidth analysis, and the method comprises the steps: dividing a to-be-measured laser source into first delay light and first reference light; performing digital de-coherence at least based on the first delay light and the first reference light to determine the frequency noise power spectral density of a to-be-measured laser corresponding to the to-be-measured laser source; and determining the laser line width of the to-be-measured laser according to the frequency noise power spectral density. The frequency noise power spectral density used for determining the laser line width is determined through digital decoherence, it is not required that the to-be-measured laser source and the auxiliary laser source have the same center wavelength, a complex physical optical fiber link is not needed so that introduction of a large amount of environmental noise can be avoided, and the flexibility, universality and precision of laser line width measurement can be improved.

The invention relates to the technical field of machine vision detection, and particularly discloses a high-temperature medium-thickness steel plate contour detection device which comprises a detection room, the detection room is arranged above a roller way, and an industrial air conditioner is arranged in the detection room; a first window and a second window are arranged at the bottom of the detection room, bottom-layer optical glass is mounted at the first window and the second window, a linear array camera mechanism and an area-array camera mechanism are arranged in the detection room, the linear array camera mechanism is arranged corresponding to the first window, and the area-array camera mechanism is arranged corresponding to the second window; a laser and a velocimeter are mounted on the area-array camera mechanism, a laser line of the laser on the steel plate is in the advancing direction of the steel plate, and the laser line of the laser and a laser point of the velocimeter are on the same straight line; and heat insulation cotton is arranged on a room body of the detection room. The detection room is installed above the roller way, all components for detection are installed in the room, maintenance and installation are implemented in the room, walking safety of personnel is guaranteed, and the dustproof problem can be solved.

The invention discloses a precision detection and compensation method for an automatic tool setting device, which belongs to the technical field of numerical control machining and comprises the following steps of: calibrating position coordinates of a zero point of a laser tracker in a machine tool coordinate system; moving the machine tool to enable the spindle axis and the zero point of the machine tool tracker to be on the same horizontal plane; obtaining coordinates of a reflector rotation circle center position point d on the automatic tool setting device; setting the zero point of the tracker as f, and rotating a machine tool spindle to enable the axis of the radial motion shaft of the automatic tool setting device to be parallel to the straight line fd; a laser tracker is used for obtaining the distribution rule of mechanical transmission errors on the whole stroke of a radial sliding plate of the automatic tool setting device; and carrying out full-stroke positioning precision and repeated positioning precision compensation on the radial sliding plate of the automatic tool setting device until the movement precision of the radial sliding plate meets the expected precision requirement. According to the method, the measuring laser line of the tracker can be ensured to be coaxial with the measured motion axis to the greatest extent, the influence of the motion error of the rotating shaft of the tracker on the measurement precision is reduced, and high-precision position error measurement and compensation are realized.

A laser line-projection device with a ranging function. The laser line-projection device comprises a support, a suspension system, a laser line-projection module and a laser ranging module, wherein the suspension system is movably connected to the support and the suspension system swings freely with gravity to realize a suspended state; and the laser line-projection module and the laser ranging module are fixedly mounted on the suspension system, the laser line-projection module projects on a plane to form crossed beams which have an intersection point, and an axis of a ranging beam emitted by the laser ranging module passes through the intersection point. The laser line-projection device ensures the consistency of emergent directions of the laser line-projection module and the laser ranging module; moreover, by means of rationally integrating and arranging the positions of laser transmitters in the laser line-projection module and the laser ranging module, an axis of emergent light of the laser ranging module coincides with tile intersection point projected by the laser line-projection module, thus providing convenience for measurement and setting-out processes while the accuracy of measurement is also improved, which is conducive to improving the working efficiency.

The invention relates to the technical field of precision measuring instruments, and particularly discloses an automatic leveling system of a multi-axis laser gradienter for decoration construction, which adopts an intelligent leveling mechanism based on magnetorheological fluid to overcome the defects of the traditional leveling method in speed, precision and environmental adaptability. Rapid switching from coarse adjustment to fine adjustment is realized through an unconstrained attitude upper platform generation module, a real-time approaching horizontal signal acquisition module, a non-uniform guide magnetic field generation module, a rigid support structure formation module and the like. The method comprises the following steps of: performing large-range passive self-leveling through gravitational potential energy by utilizing the phase change of magnetorheological fluid between a liquid state and a semi-solid state, and realizing high-precision active leveling through the guidance of a non-uniform magnetic field to finally form a rigid integrated support structure to isolate vibration and project high-stability reference laser rays; the leveling efficiency and the anti-interference capability are remarkably improved, the manufacturing cost is reduced, and the high-precision positioning and leveling requirements under the complex construction environment are met.

The invention discloses a pavement flatness measuring method and system. The measuring method comprises the following steps: acquiring image data; acquiring a measuring point set according to the image data; attribute data of the measuring point set are extracted, and the attribute data comprise measuring point coordinate positions, acquisition speed and acquisition time; averaging the attribute data, converting the attribute data into frequency domain data, and calculating the pavement flatness of each measuring point; fallen leaves, gravels, weeds and other sundries on the road surface are recognized and filtered through an artificial intelligence recognition algorithm, a recognition result is fused into an original image, laser line point location prediction is carried out, interference of the sundries on laser line waveforms is filtered, and the average flatness of the road surface is calculated. And interference of the environmental factors on flatness calculation is reduced.

The invention relates to the field of golf, in particular to a portable multi-eye golf real-time detection and measurement method and equipment and electronic equipment. The method comprises the following steps: carrying out coupling calibration on a laser line direction and a camera coordinate system, and establishing a reference direction of measurement; acquiring a ball position based on the reference direction, judging whether the ball position is within a preset ball hitting range or not, and if yes, adjusting each camera and each auxiliary lighting device to be in a preset first working mode according to the ball position and a preset ball hitting mode; the ball hitting process is monitored, state information at different moments is screened according to a preset comparison rule, multi-view image data associated with state change moments are stored, and the state information comprises club state information, ball state information and environment state information; according to the multi-view image data and a preset image processing algorithm, calculating a three-dimensional space position including a sphere, a ball rod and an environment; and according to the three-dimensional space position and a simulation algorithm, acquiring flight data of the sphere and outputting the flight data.

The invention provides a workpiece thickness detection method which is applied to the field of workpiece thickness detection, and the method comprises the steps: building a workpiece thickness detection device, and calculating the internal parameters and external parameters of two area array cameras; laser is projected on the calibration plate, the calibration plate is moved in a plurality of spaces, and laser line images of the four line lasers on the calibration plate are captured through the two area-array cameras respectively; obtaining point cloud information of the upper surface and the lower surface of the workpiece based on the laser line image and the internal parameters and the external parameters of the two area-array cameras; three-dimensional fitting is conducted according to the point cloud information of the upper surface and the lower surface of the workpiece, an upper surface plane equation of the workpiece and a lower surface plane equation of the workpiece are obtained, real-time thickness detection in the workpiece production process can be achieved, especially detection under the abnormal conditions such as inclination and swinging of the workpiece can be achieved, and the detection system has high accuracy.

A laser distance measuring device with a line casting function comprises a distance measuring module and a switching mechanism. The distance measuring module comprises a transmitting unit and a receiving unit, the transmitting unit is configured to be capable of transmitting a laser point, and the receiving unit is configured to be capable of receiving reflected laser, reflected by a distance measuring object, of the laser point; the switching mechanism comprises a light ray modulation unit, and the light ray modulation unit is configured to be capable of switching between a first position and a second position and is configured to be capable of modulating the laser points emitted by the emitting unit into laser rays; when the light modulation unit is at the first position, the transmitting unit can transmit the laser point to the distance measurement object, and the receiving unit can receive the reflected laser reflected by the distance measurement object; and when the light ray modulation unit is at the second position, the light ray modulation unit can modulate the laser points emitted by the emission unit into the laser rays, and the laser rays are projected to a projection object.

The invention relates to the technical field of laser line scanning, and discloses an abnormal reflected light interference suppression method based on a laser line scanning system, which comprises the following steps: S1, extracting all laser lines in original image data, and calculating the position, amplitude and width of each point; s2, laser ray optimal strategy grouping is carried out, and the extracted laser rays are divided into two groups according to the principle of maximum amplitude and maximum width; s3, based on turning point identification, continuity judgment and local continuity judgment, laser ray local continuity judgment and grouping and recombination are comprehensively evaluated; S4, final laser ray reconstruction is carried out, and reconstructed laser ray data are output after smooth processing; s5, outputting and verifying a result, and verifying the result through a visualization or numerical analysis method; through the local continuity judgment and grouping recombination process, abnormal reflected light interference in the laser rays can be effectively identified and processed, and meanwhile the global continuity of the laser rays is kept.

The utility model discloses an automatic focusing device and electronic equipment, and the device comprises an objective lens adjusting part which comprises an objective lens which is used for passing through a defocus detection light beam and a to-be-detected sample surface image collection light beam, a microscopic image sensor which collects a to-be-detected sample surface image, and a driving part which controls the objective lens to move along a main axis direction, the focus of an objective lens shared by the microscopic image sensor and the automatic focusing sensor is positioned on the surface of the sample to be detected; according to the automatic focusing device, the rotating mechanism is added on the basis of the existing automatic focusing device, so that the direction of the line laser can be dynamically adjusted according to the actual situation, and the phenomenon that when scratches, textures or pits similar to detection light beams in shape exist on the surface of an object, the focusing laser line segment can completely coincide with the detection light beams is avoided; therefore, the anti-interference capability and the application range of the focusing sensor are improved, and the rotating mechanism is detachably mounted, so that the rotating mechanism and the lens cone are convenient to disassemble and assemble, and parts are convenient to replace and maintain.

The invention relates to a rail vehicle wheel set full circumference dimension detection method and system. The detection method comprises the steps that multiple sets of three-dimensional tread modules and wheel set dimension measurement modules are installed on the two sides of a rail; when a wheel passes through the three-dimensional tread module, multiple groups of original data are automatically collected; the size of the wheel set is calculated based on the multiple sets of original data; when a wheel passes through the wheel set size measurement module, original laser line data of a tread and a side image of the wheel are automatically collected, and curve fitting is carried out by using a neural network fitting algorithm based on the collected data and image to obtain the diameter of the wheel. According to the invention, the measurement module is installed beside the rail, so that the measurement of the size of the wheel set and the fault detection of the surface of the wheel set can be automatically completed when a train passes, the measurement speed is high, the real-time performance is good, and the automation degree is high.