1132 results about "Dot matrix" patented technology

The invention relates to the technical field of commodity anti-counterfeiting, in particular to an intelligent identification and analysis method for an anti-counterfeiting mark, which comprises the following steps: firstly, acquiring environmental parameters in real time, acquiring a holographic image of the anti-counterfeiting mark through a multispectral imaging technology, and correcting the image by using environmental data to generate a standardized hologram; then microcosmic anti-counterfeiting features in the dynamic dot matrix hologram are extracted to construct holographic feature vectors; and synchronously collecting encrypted bar code data, dynamically adjusting an error correction parameter and a decoding threshold value of a bar code decoding algorithm through the environment compensation model, and obtaining a first optimized bar code decoding algorithm for decryption. And checking the aging matching between the hologram timestamp and the bar code dynamic key by using an asymmetric encryption algorithm, and calculating the matching degree between the real-time holographic feature vector and a pre-stored standard vector by using a feature similarity algorithm. And when the matching degree is greater than a preset threshold value and the dynamic key verification is passed, determining that the product is a genuine product and updating the dynamic key.

The invention relates to the technical field of geological disaster monitoring, and discloses a point-like landslide and debris flow potential degree adaptive monitoring and early warning method. According to the method, a dot matrix monitoring equipment array is arranged, and displacement data and environmental parameters of multiple monitoring points are collected; analyzing the displacement data timestamp through a timeline analysis module, generating a dynamic timeline, and marking geological event nodes; a geographic information system is combined to carry out spatial mapping on displacement data, and environmental parameters are fused to obtain a preliminary potential degree evaluation result. The pattern recognition engine classifies displacement speed and deformation characteristics in the preliminary result to generate a deformation characteristic spectrum with a space-time label; calculating a dynamic potential degree evaluation map according to the multi-factor weighted evaluation model; and adjusting an early warning threshold according to a user instruction, generating a personalized early warning rule set, and scanning the atlas to output a multi-stage early warning response scheme. On the basis of an early warning feedback iteration updating model and an engine, monitoring data are newly added to trigger and re-analyze in real time, a related scheme is updated in a linkage mode, and different scene requirements are met.

The invention relates to a super-resolution fluorescence lifetime microscopic imaging method and system based on pixel relocation. The method comprises the following steps: S1, carrying out multi-focus parallel scanning on a sample by using an acousto-optic deflector; s2, synchronously collecting a fluorescence intensity image and fluorescence lifetime data through an area array detector and a point detector; and S3, carrying out super-resolution reconstruction on the fluorescence intensity image based on a pixel relocation algorithm, and mapping fluorescence lifetime data to a reconstructed image to generate a super-resolution fluorescence lifetime microscopic image. According to the invention, an AOD is adopted to replace a scanning galvanometer in a traditional TCSPC-FLIM imaging system as a light beam scanner; addressing scanning of AOD, image acquisition of EMCCD and life data acquisition of PMT and TCSPC cards are closely linked by combining well-designed multiple paths of synchronizing signals, and fluorescence life data are distributed to each dot matrix through a later data processing method, so that organic combination of super-resolution and FLIM can be realized without complicated equipment, and SR-FLIM images of samples are obtained.

The invention discloses a barrier-free intelligent service scheme based on multi-modal fusion, and belongs to the technical field of intelligent equipment, and the method comprises the steps: determining a service type selected by a user according to the first input of the user, and switching to a corresponding service interface; determining a target service request selected by the user in the service interface according to second input of the user; searching target information in a background database according to the target service request; generating first text information and a first braille dot matrix of voice broadcast according to the target information; and calling a visual display module to visually display the target information, calling a voice broadcast module to broadcast the first text information by voice, and displaying the first braille dot matrix on a touch display module. According to the scheme provided by the invention, comprehensive and intelligent information query and in-station navigation service can be provided for special crowds.

The invention relates to the technical field of hydrological data measurement, in particular to a sky-ground-water integrated hydrological monitoring system. The system comprises the following modules: a space-based monitoring module, an air-based monitoring module, a foundation monitoring module, a water-based monitoring module and a hydrological early warning module. Specifically, a hydrological monitoring area is patrolled through a satellite platform, and terrain height data is monitored in a dot-matrix mode; and scanning the hydrological monitoring area along the sine wave path through the unmanned aerial vehicle, and generating a three-dimensional topographic image in combination with the topographic height data. According to the invention, through a data processing technology, a real-time monitoring technology and a deep learning technology, three-dimensional, real-time and accurate monitoring of water level, flow, terrain and sediment hydrological elements is realized; scientific, reliable and comprehensive data support is provided for the fields of water resource management, flood control and disaster reduction and ecological environment assessment; meanwhile, a hydrological early warning model is constructed, and hydrological abnormal conditions are captured in time.

The invention relates to the technical field of computer vision, in particular to an industrial facility autonomous inspection and intelligent diagnosis method based on multi-modal vision fusion, which comprises the following steps of: acquiring a multi-frame seam image to extract a texture dot matrix, analyzing displacement frequency to evaluate stability, calculating angle difference to identify a deformation structure surface, and performing multi-modal vision fusion. And detecting image and point cloud overlapping, screening abnormal blocks to generate a fusion set, identifying a spectrum hopping mapping image, positioning a boundary region, extracting a frequency analysis path repetition rate, identifying an abnormal focusing position, and generating a diagnosis list. According to the invention, through multi-frame image texture dot matrix displacement tracking, the dynamic abnormal region identification precision is improved, micro deformation is captured through three-dimensional point cloud angle difference, the structural anomaly detection is enhanced, the multi-modal anomaly judgment accuracy is improved, the anomaly characteristics, the inspection path frequency and anomaly aggregation analysis are refined, the high-frequency abnormal region is positioned, and the inspection resource configuration is optimized; risk prevention and control are enhanced, and limitation of equipment surface sensing and abnormal positioning is broken through.

The invention provides a high-precision dot matrix density cosmetic contact lens development method and system, a medium and a product, and relates to the technical field of cosmetic contact lens production, and the method comprises the steps: obtaining multi-mode fashion data through a crawler technology, and extracting a trend language intention vector from the multi-mode fashion data; based on a pre-trained neural network model, mapping the trend language intention vector into a microscopic physical parameter for defining a cosmetic contact lens pattern to obtain an initial dot matrix parameter set; performing graphical rendering on the initial dot matrix parameter set to obtain a plurality of initial cosmetic pupil dot matrix patterns; simulating the wearing effect of each initial cosmetic contact lens dot matrix pattern on the three-dimensional human eye model through simulation software to obtain a plurality of virtual wearing effect pictures; and determining the initial cosmetic contact lens dot matrix pattern of which the aesthetic evaluation score is greater than a preset score threshold as a final cosmetic contact lens dot matrix pattern. By implementing the method, the limitation of a traditional design element library can be broken, the generation of the cosmetic contact lens pattern is more innovative and diversified, and the innovativeness and the popular integrating degree of the cosmetic contact lens pattern are improved.

The invention discloses an anti-copying two-dimensional code. According to the two-dimensional code, all or part of black modules and / or all or part of areas in a known public two-dimensional code are replaced by anti-counterfeiting feature textures; and / or modulating the two-dimensional code embedded with the second layer of copy detection information in the high-frequency component in the known public two-dimensional code; an anti-counterfeiting dot matrix is arranged around the replaced partial area and / or the known public two-dimensional code; the number of the anti-counterfeiting feature textures is one or more, and the anti-counterfeiting feature textures comprise copy detection information. The invention further discloses a generation method and a detection method of the anti-copy two-dimensional code, and the anti-copy two-dimensional code has wide application value.

The invention relates to the technical field of target distance detection and 3D scanning reconstruction, and discloses a coaxial scanning type ultra-long distance detection laser radar system, which comprises a laser light source module, which adopts a 1550nm optical fiber laser to output high-power laser, and ensures sufficient laser energy and human eye safety; according to the invention, by adopting the high-power 1550nm fiber laser, the ultra-long distance detection is realized on the premise of ensuring the safety of human eyes, and the detection range of more than 10km can be reached, so that the limitation that the detection distance of the traditional laser radar is only 500m is broken; according to the invention, by selecting the 1550nm laser device which is safer to human eyes and greatly improving the laser power to kilowatt and even myriawatt levels, stronger echo signals are realized, so that the detection signal-to-noise ratio is remarkably improved; the micro-lens array is adopted to replace a traditional DOE diffractive optical element, efficient beam shaping of a one-dimensional or two-dimensional dot matrix is achieved through flexible regulation and control of the curvature radius and the distance of the micro-lenses, meanwhile, the manufacturing cost is reduced, and the design freedom degree is expanded.

The invention provides a printing method and equipment of intelligent self-adaptive dot matrix paper, a medium and a program product, and relates to the technical field of machine learning. The method comprises the steps of receiving printing task information of a user side, predicting to-be-printed content and determining a matched code laying scheme by utilizing a deep learning model trained based on various printing contents and code laying conditions, laying codes on the to-be-printed content according to the scheme, adjusting a code laying result to be in a set format, and printing the to-be-printed content according to the code laying result. According to the method, the printing instruction is sent to the printer in combination with the printing task information, and finally, after the feedback instruction that the printer completes dot matrix paper printing is received, the instruction is forwarded to the user side, the whole process from task receiving to printing completion and feedback is achieved, and the printing efficiency and accuracy are improved.

The invention relates to the technical field of metal additive manufacturing, in particular to a discontinuous dot matrix supporting structure design method for restraining additive manufacturing thermal deformation, and the method comprises the steps that a missile wing discontinuous dot matrix filling area is determined, and the design density of the filling area and the appearance precision index of missile wing additive manufacturing are determined; determining an L-D curve of the unit cell size and the unit cell diameter of the filling area; constructing a three-dimensional geometric model of the missile wing structure on the basis of an L-D curve, performing additive manufacturing thermal deformation analysis, and determining a spacing interval of a body-centered cubic dot matrix by combining the difference between the maximum deformation of the feature points on the outer surface of the missile wing and the appearance precision index of the additive manufacturing of the missile wing; and obtaining the optimal discontinuous spacing according to the spacing interval of the body-centered cubic dot matrix. Through the size design and the spacing design of the discontinuous dot matrix structure, the discontinuous dot matrix supporting structure meeting the missile wing appearance precision requirement and the lightweight requirement is obtained.

The invention provides a thermal imaging automatic calibration and key region segmentation method. The method comprises the steps of obtaining a thermal imaging image, and then performing preliminary denoising processing on the image to obtain a denoised image; constructing a high-density grid in an image pixel dot matrix by adopting a dense sampling method according to the de-noised image so as to determine an initial pixel coordinate of each grid point; obtaining neighborhood feature vectors through an abnormal point set, and grouping the vectors by adopting K-means clustering so as to determine a temperature change mode, and fusing a temperature gradient to extract a boundary extraction basis as grid optimization input; and extracting a boundary extraction basis of the key part from the temperature change mode, adjusting the high-density grid according to the boundary extraction basis to obtain an optimized grid, and starting relocation iteration adjustment through coordinate deviation calculation. According to the method, a closed-loop optimization process of high-density grid construction, abnormal point identification, clustering analysis, grid dynamic optimization and iterative relocation is constructed, so that refinement and adaptive segmentation of a thermal anomaly region are realized.

The invention relates to the technical field of new materials, in particular to a dot matrix composite origami structure based on a hierarchical strategy and a preparation method thereof, the dot matrix composite origami structure comprises a plurality of dot matrix cell elements, and the dot matrix cell elements are periodically arrayed in three mutually perpendicular coordinate axis directions based on the origami structure to form a closed geometrical shape. The method has the beneficial effects that the dot matrix structure is mapped into the paper folding structure, integration of the advantages of dot matrix design and paper folding design is achieved, the overall mechanical property of the structure is further improved, and the coverage range of the overall performance of the structure is expanded. The characteristics of paper folding and lattice structures are integrated, and a composite structure with controllable overall rigidity is designed, so that the composite structure has better vibration and noise reduction characteristics.

The embodiment of the invention discloses a method, a device, equipment and a system for determining dynamic distortion of an HUD (Head Up Display), and a medium. The method comprises the following steps: acquiring a lattice diagram corresponding to each eye point in an eye box; for each eye point and the lattice diagram corresponding to the eye point, determining a camera pixel deviation corresponding to the eye point according to a relative position coordinate of the eye point relative to a target eye point in the eye box, a reference position coordinate of the target eye point and a pixel number in the lattice diagram; for each pixel point in the lattice diagram, determining a first lattice coordinate corresponding to the pixel point based on the lattice coordinate of the pixel point and the camera pixel deviation corresponding to the corresponding eye point, the first lattice coordinate being a lattice coordinate after the deviation of the pixel point is eliminated; determining the dynamic distortion of the pixel point based on the first dot matrix coordinate and the dot matrix coordinate of the target pixel point in the dot matrix diagram; and the dynamic distortion of the corresponding eye spots of the lattice diagram is determined based on the dynamic distortion of each pixel point, so that accurate measurement of the dynamic distortion of the HUD is realized.

The present invention discloses a rapid dot matrix micro-nano impact indentation testing system. The rapid dot matrix micro-nano impact indentation testing system comprises a three-dimensional electric positioning module, wherein the three-dimensional electric positioning module comprises an XY translation stage and a Z-axis lifting stage; a dot matrix impact indentation module, wherein the dot matrix impact indentation module comprises a three-degree-of-freedom piezoelectric platform arranged on the Z-axis lifting stage, one surface of the three-degree-of-freedom piezoelectric platform is provided with a piezoelectric ceramic actuator, and one end of the piezoelectric ceramic actuator is connected to an indenter; a clamp, wherein the clamp clamps a test piece, and the test piece faces the indenter; and an imaging module, wherein the imaging module comprises a microscope lens. The system can achieve in-situ micro-nano impact indentation test and rapid dot matrix indentation, and has higher indentation precision.

The invention discloses a method, device and medium for converting an image animation into an unmanned aerial vehicle group dance step air route, and belongs to the field of unmanned aerial vehicle cluster control, and the method comprises the steps: 1, obtaining an original video corresponding to an image animation to be displayed of an unmanned aerial vehicle group; 2, performing frame insertion processing on the original video to obtain a smooth video; 3, preprocessing the obtained video, and mapping discrete points in each frame of two-dimensional image in the video into a three-dimensional space coordinate system to form a dot matrix distribution diagram of the unmanned aerial vehicle group; and step 4, for the dot matrix distribution diagrams of two adjacent frames of unmanned aerial vehicle groups, solving positions and moving paths of each unmanned aerial vehicle in the dot matrix distribution diagram of the previous frame of unmanned aerial vehicle group and the corresponding unmanned aerial vehicle in the dot matrix distribution diagram of the next frame of unmanned aerial vehicle group through a nearest neighbor matching algorithm in combination with a linear distribution algorithm. And taking the obtained position and moving path of each unmanned aerial vehicle as the dance step air route of the unmanned aerial vehicle group. According to the method, the image animation can be efficiently and accurately converted into the dance step air route of the unmanned aerial vehicle group.

The invention discloses a self-adaptive alignment method of a chip substrate, and aims to solve the problem of high-precision alignment of a chip and a driving substrate in display panel manufacturing. Obtaining an initial dot matrix of the first substrate chip array through a visual sensor, determining a target sub dot matrix with the highest matching degree with a standard sub dot matrix by adopting a global-local double-layer screening mechanism, and obtaining a regularized intermediate dot matrix through affine transformation; then, density-distance two-dimensional threshold dynamic clustering is utilized, a clustering threshold is adaptively adjusted based on kernel density estimation, noise points are removed, and a processed dot matrix is obtained; the method gets rid of traditional marking dependence, utilizes a dynamic threshold to adapt to different dislocation scenes, realizes multi-feature angular point positioning to improve robustness and reduce angular point positioning errors, finally fuses topology centrality and geometric features, determines angular points through a weighted voting mechanism, takes the angular points as alignment reference points, and remarkably improves bonding precision and production efficiency.

The invention provides a depth camera and a mobile robot. The depth camera comprises a line laser emitting unit used for emitting a plurality of line laser beams with preset widths; the dot matrix emitting unit is arranged on the side of the line laser emitting unit and used for emitting dot matrix light beams, the dot matrix emitting unit comprises multiple rows of dot matrix light sources, and at least two rows of dot matrix light sources are regularly arranged in a staggered mode and are circularly arranged; the optical element is arranged on the light emitting path of the line laser emitting unit and the dot matrix emitting unit, the line laser beam projects a dodging pattern to a to-be-detected space through the optical element for close-range detection, and the dot matrix beam projects a speckle pattern to the to-be-detected space through the optical element; and the receiving unit is arranged on the side of the line laser emitting unit and the dot matrix emitting unit. The depth camera of the invention can obtain the obstacle avoidance depth information at a short distance, realizes high-precision obstacle avoidance at a short distance, identifies black material objects and small objects, can also realize three-dimensional positioning navigation and three-dimensional height measurement, and solves the problem of multiple paths.

The invention discloses a partition dot matrix filling air rudder lightweight design method. The method mainly comprises three parts of establishment of a dot matrix unit cell equivalent mechanical performance proxy model, topological optimization design of an air rudder structure and optimization design of dot matrix filling parameters. Comparing compression tests of different rod diameters with simulation results of variable cross-section beam units with different parameters, and searching optimal beam unit cross-section parameters to construct and calculate a lattice unit cell equivalent mechanical performance agent model; structure topological optimization design is carried out on the determined air rudder appearance and load conditions, dot matrix filling area division is carried out on a design area according to a topological optimization result, and the design area can be divided into areas with different filling densities according to design requirements; and establishing a parameterized finite element model for the dot matrix filling structure and the air rudder model, and performing optimization design on rod diameters of different partitions on the basis to obtain a final dot matrix filling design model.

The invention provides a composite material product appearance measuring method, device and equipment and a medium, and relates to the technical field of digital measurement, and the method comprises the steps: importing a three-dimensional mathematical model of a target composite material product, and building the communication connection with a laser radar; measuring coordinates of a target point selected by a user through a laser radar; the target points comprise a plurality of surface points around the target positioning hole and a plurality of internal points on the hole wall; fitting a plane according to the coordinates of the plurality of surface points, projecting the coordinates of the plurality of internal points to the plane, and fitting to obtain the actual circle center coordinates of the target positioning hole; according to the UV grid parameters, uniformly distributed (U-2) * (V-2) scanning dot matrixes are generated on a target profile area selected by a user, and actual coordinates of all scanning points are measured through a laser radar; and outputting the measurement result of the appearance of the target composite product until the actual circle center coordinates of the plurality of positioning holes and the actual coordinates of the scanning points on the plurality of molded surface areas are measured, thereby realizing the automatic measurement of the appearance of the composite product.

The utility model provides a curved surface polishing device which is provided with a first platform and a second platform, the first platform and the second platform are oppositely arranged, and the first platform and the second platform are fixedly connected based on at least three sets of hinge assemblies. A grinding wheel driving part and an external controller are arranged on the surface, close to the first platform, of the second platform, the external controller is arranged above the grinding wheel driving part, at least three laser induction sensors and a grinding wheel are arranged on the surface, away from the first platform, of the second platform, and the laser induction sensors are arranged around the grinding wheel. Further, the ground curved surface can be sensed in real time based on the dot matrix laser induction sensor, the controller controls stretching and retracting of the hinge assembly in an online closed-loop mode, self-adaptive adjustment of the curved surface contact angle is guaranteed, and the problems that machining is difficult and quality is poor for different positions and different curvatures of the curved surface in a traditional grinding mode are solved; and meanwhile, universality of multiple machining occasions is achieved, and the machining precision is improved.

The invention relates to a manufacturing method of a polishing pad and a semiconductor device, the heat conductivity of a polishing layer is controlled to be between 0.04 W / (m.K) and 0.075 W / (m.K), the ratio of the density SG1 of any point of the polishing layer in the diameter direction to the minimum density SG0 of the polishing layer in the diameter direction is between 1.002 and 1.096, a groove is engraved in the surface of the polishing layer, and the thickness of the groove is smaller than that of the polishing layer. The groove shape comprises one or more of a concentric circle groove, a radioactive ray groove, an arc-shaped groove, an X-Y grid groove and a dot matrix punching groove, the ratio (V0-V) / V0 of the difference value of the volume V0 of the polishing layer before grooving and the volume V of the polishing layer after grooving to the volume V0 of the polishing layer before grooving ranges from 0.02 to 0.19, and the prepared polishing pad has excellent comprehensive polishing performance. The NU (Non-Uniformity) of the grinding rate is relatively small, and the defect is relatively small.

According to the dot-matrix pen handwriting screen projection method and system, handwriting data obtained from a dot-matrix pen is sent to a protocol conversion module through a Bluetooth end data bridge, the protocol conversion module converts the handwriting data into SDK layer protocol data and sends the SDK layer protocol data to a data center service, stable and rapid transmission of dot-matrix pen trajectory data is ensured, and the accuracy of dot-matrix pen handwriting screen projection is improved. The SDK layer protocol data is analyzed through the data center service to obtain target data, the target data is sent to the conference service to bind the conference service through the soft terminal, accurate binding is achieved, the accuracy and management efficiency of writing records in a multi-user use scene are improved, and based on a soft terminal binding result, the writing record management efficiency is improved. And sending the target data to a track service for storage, and sending the target data to a smart television for rendering display, so that a perfect dot matrix pen management system can carry out flexible resource allocation and authority management according to different use scenes, and the efficiency of the dot matrix pen is fully exerted.

A communication method and system of a DPTP protocol, a product and a medium relate to the field of data transmission, and the method comprises the following steps: under the condition that a dot matrix pen establishes a connection with an upper end application, the dot matrix pen receives a protocol level and a data standard number sent by the upper end application to the dot matrix pen; the dot matrix pen returns a confirmation message to the upper end application, wherein the confirmation message comprises an equipment authentication strategy number; if the authentication strategy number indicates that authentication is needed, the dot matrix pen carries out authentication operation on an authentication instruction sent by the upper end application; under the condition that the authentication operation result is that authentication succeeds or the authentication strategy number indicates that authentication is not needed, the dot matrix pen packages the collected writing track data into message data in a data format according to the data format corresponding to the data standard number; and the dot matrix pen sends the message data to the upper end application. By implementing the method, the stability of data transmission between the dot matrix pen and the upper application can be improved.

The invention provides a design method of a variable-size variable-density lattice structure wing with optimized heat dissipation load, and relates to the technical field of aerospace engineering, and the design method comprises the following steps: S10: carrying out variable cross-section design on a D-type unit to obtain a variable cross-section D-type unit, taking the variable cross-section D-type unit as a lattice unit configuration, and filling the wing to form a skin lattice structure; the skin lattice structure of the wing comprises a skin and a lattice filling area; s20, cell element variable-size design is adopted for the dot matrix units, and variable-size dot matrix units are constructed; s30, according to the stress field of the wing, cell element variable-density design is adopted for the variable-size dot matrix units, and variable-size variable-density dot matrix units are constructed; and S40, establishing a wing configuration. The variable-cross-section D-type unit is used as a dot matrix unit configuration, deep coupling of integrated design of heat dissipation and bearing performance is achieved through variable-size and variable-density design, application scenes are flexibly adjusted, and complex working condition requirements are met.

A uniform differential OTA method, system, product and medium for a dot matrix pen relate to the field of firmware upgrade, and the method comprises the following steps: a server generates a differential upgrade package for firmware of each functional chip, and packs the differential upgrade package and current version information to form a uniform upgrade package; the server side transmits the unified upgrade package into a main control chip, the main control chip comprises a double-partition storage space, the double-partition storage space comprises a used partition and an unused partition, and the used partition comprises current running firmware; after the dot matrix pen terminal receives the unified upgrade package, the current version information in the unified upgrade package is verified; if the verification is passed, the dot matrix pen terminal generates target firmware according to the differential upgrade package; and the dot matrix pen terminal writes the target firmware into the unused partition, and distributes the target firmware to each functional chip corresponding to the target firmware. By implementing the method, the updating efficiency of the dot matrix pen firmware can be improved.

The invention discloses an intelligent dot matrix electronic display screen control system, relates to the technical field of electronic display screens, and solves the technical problems that color adjustment and brightness adjustment are inaccurate and are difficult to adapt to different scene requirements. Duty ratio adjustment for limiting a brightness change threshold value is adopted for a low-gray-scale area, the jump problem caused by traditional linear distribution is avoided, dark part details are displayed more smoothly, different reasons such as overall color cast, local color cast and dynamic content color cast are distinguished through a color adjustment control unit, a differential adjustment strategy is adopted, the color rendition degree is improved, and the color rendition effect is improved. According to the method, pixel-level partition detection is adopted, abnormal pixels are accurately screened, a compensation coefficient is calculated, the problem of local brightness deviation is solved, a thermal attenuation coefficient is introduced in combination with the relation between temperature and brightness, the compensation coefficient is dynamically corrected, and the brightness uniformity error in a high-temperature environment is reduced.

The invention provides a high-speed laser-induced breakdown spectral imaging device and method. The high-speed laser-induced breakdown spectral imaging device comprises an optical fiber laser, a marking table, a high-speed scanning galvanometer, a flat-field scanning lens, a dichroic spectroscope, a laser isolation head, a focusing lens, a high-speed spectrograph, a delay pulse generator, an electronic control card and a computer. The electronic control card is connected with the computer, the fiber laser, the high-speed scanning galvanometer and the delay pulse generator; the delay pulse generator is connected with the high-speed spectrometer; the high-speed spectrometer is connected with the computer; geometric centers of the high-speed scanning galvanometer, the dichroic spectroscope and the laser isolation head and a straight line where laser is located are on the same straight line; and a flat field scanning lens is arranged below the high-speed scanning galvanometer. By applying the technical scheme, the task of single-point laser emission sampling exceeding 10000 Hz and dot matrix data acquisition exceeding 2000 Hz can be completed.

The utility model discloses an out-of-focus and dot matrix composite lens for myopia control, which comprises a lens main body, a correction area, a central optical correction area, a central out-of-focus prevention and control area and a peripheral out-of-focus prevention and control area are arranged in the lens main body, and dot matrix areas are arranged in gaps of the central out-of-focus prevention and control area and the peripheral out-of-focus prevention and control area. And an out-of-focus transition area is arranged between the central optical correction area and the central out-of-focus prevention and control area. Compared with the prior art, the utility model has the advantages that the diameter of the optical correction area is reduced to 8mm, so that the defocus imaging effect is closer to the central area beside the retina macular fovea center, the prevention and control effect is enhanced, the transition area is added in the optical correction area, the initial wearing comfort is improved, the correction area and the transition area are converted more naturally, and the defocus ratio is close to 1: 1; the fusion mechanism of the visual center of the brain is fully utilized, the defocusing effect is ensured, and the definition and the contrast sensitivity required by daily life and learning are also ensured.

This invention discloses a robotic grinding auxiliary device with a follow-up lattice circulation mechanism for thin-walled parts, comprising: a grinding robot mechanism, a thin-walled part, and a follow-up lattice magnetorheological support mechanism. The follow-up lattice magnetorheological support mechanism is positioned directly in front of the grinding robot mechanism. A left positioner and a right positioner are located on either side of the follow-up lattice magnetorheological support mechanism. The left and right positioners are configured to clamp the thin-walled part from both sides, allowing the thin-walled part to be synchronously moved with the left and right positioners. The thin-walled part is positioned vertically above the follow-up lattice magnetorheological support mechanism, and the working end of the grinding robot mechanism is positioned above the thin-walled part. This invention effectively counteracts the cutting force applied by the grinding robot by providing active and adaptive support from below, greatly suppressing workpiece vibration and deformation, and ensuring machining accuracy and surface quality.