450 results about "Laser projection" patented technology

The invention discloses a shield tail gap measurement method based on instance segmentation and laser projection error compensation, and belongs to the technical field of shield construction automatic measurement. The method solves the problem that in the prior art, projection coordinate deviation is caused by shield type TBM mechanical vibration and laser thermal drift, and then shield tail gap measurement precision is affected. According to the technical scheme, the method comprises the steps that multiple sets of lasers are arranged in the circumferential direction of a shield tail to project fringes to segments; synchronously acquiring images through an industrial camera; respectively extracting a segment seam sub-pixel boundary and a laser stripe center line by using a double-branch instance segmentation network; performing real-time vibration and temperature drift compensation on the laser projection point based on a thermal-mechanical coupling error model; and finally, calculating a gap value and three-dimensional gradient distribution through point cloud registration. The method is mainly used for high-precision and real-time dynamic measurement of the gap between the shield tail and the duct piece in the tunneling process of the shield type TBM.

The invention discloses a pipeline inner wall panoramic three-dimensional scanning device and a measuring method, and the device comprises a panoramic plane laser generator which comprises a point laser generator, an axicon, a laser focusing lens, a conical surface reflector and a transparent cylindrical support, and is used for transmitting a 360-degree panoramic plane laser beam to the inner wall of an object to be measured; according to the invention, single-exposure full-circumferential high-precision three-dimensional measurement is realized, and the device can synchronously obtain complete three-dimensional point cloud data of the circumference of the inner wall of the whole pipeline at the moment of single exposure through innovative combination of a panoramic annular imaging system and a panoramic planar laser projection technology; the method has the advantages that axial rotary scanning or multi-view data splicing required by a traditional method is avoided, measurement efficiency is improved, splicing accumulative errors are avoided, laser stripe image acquisition is complete and free of breakpoints, and completeness and accuracy of three-dimensional reconstruction data are guaranteed from the source.

The invention provides an acupuncture point accurate positioning device based on machine learning, and relates to the field of artificial intelligence. Comprising a multi-modal data acquisition module, a data preprocessing module, a machine learning processing module, a dynamic adaptive calibration module, a gender specificity optimization module, a laser projection module and an interaction and control module, wherein the multi-modal data acquisition module is used for acquiring human body surface sign information and human body three-dimensional space coordinate information; temperature difference information and human body posture data of the acupoint area and surrounding tissues; the machine learning processing module is internally provided with a trained improved convolutional neural network model, performs feature extraction and fusion on the data processed by the preprocessing module, and outputs initial acupuncture point coordinates; the dynamic self-adaptive calibration module dynamically corrects the coordinates of the acupuncture points; the gender specificity optimization module analyzes gender information of a patient and performs targeted adjustment on initial acupuncture point coordinates. According to the invention, the defects in precision, efficiency, adaptability and scene expansibility in the prior art are overcome.

The invention discloses a dynamic multi-spot projection optical system based on an LED light source, which comprises the LED light source, a reflecting cover, a grating sheet, a condensing lens, a concave reflector and an optical reflection assembly, and is characterized in that the LED light source is arranged at the bottom of the reflecting cover, and the grating sheet is provided with a light-transmitting area with a preset pattern shape; the reflecting cover consists of a plurality of plane reflectors A; the concave reflector consists of a plurality of plane reflectors B; light emitted by the LED light source forms a pattern light beam through the grating piece, the light beam is divided and reflected into a plurality of sub light beams through the conical reflecting cover, and the sub light beams are guided to the condensing lens through the optical reflecting mirror set. According to the invention, a low-cost, laser-free and safe LED scheme is adopted, and through innovative optical design, a complex dynamic light and shadow effect comparable to or even surpassing laser projection is realized, and the imaging definition is kept unchanged within a projection distance range of 2-15 meters.

The embodiment of the invention discloses a digitalized assembling method of a helicopter fairing, which comprises the following steps of: 1, scanning the surface of the fairing and the surface of a helicopter body structure, and acquiring a three-dimensional contour model of the surface of the fairing and the surface of the helicopter body structure according to scanning data; 2, generating a visual assembly correction scheme by comparing the three-dimensional contour model with a design model imported into a controller; 3, in the fairing assembly process, a visual assembly correction scheme is projected through laser, non-contact hole making and polishing guiding are achieved, and digital assembly of the fairing is implemented; and 4, in the fairing assembling process, dynamic position information of the fairing and all the positioning targets on the aircraft body structure is obtained, the moving track of the fairing in the assembling process is solved, automatic alarming is conducted when the fairing is out of tolerance, and laser projection is frozen. The problems that an existing fairing assembling mode is low in assembling efficiency and precision, and the production efficiency and the assembling requirement of a helicopter are difficult to meet are solved.

The invention discloses a laser projection device, and relates to the technical field of illumination, and the laser projection device comprises a reflection cylinder and a laser light source. A reflecting surface is formed on the side of the reflecting cylinder; a plurality of reflecting surfaces are arranged and are planes; the laser light source is used for emitting a lighting beam, so that the lighting beam is projected to the reflecting surface; wherein the reflection cylinder can rotate around the axis of the reflection cylinder, so that the surface normal direction of the reflection surface is changed; and the reflecting surface is in a projection shape. According to the technical scheme provided by the invention, the definition of light spots can be improved.

The invention discloses an integrated galvanometer laser projection method and an integrated galvanometer laser control device. The integrated galvanometer laser projection method comprises the steps that 1, a control card stores various data in a classified mode; when an upper computer issues a system parameter instruction, a communication interface is automatically switched according to a communication mode of the upper computer, and instruction data is analyzed and stored in an EEPROM (Electrically Erasable Programmable Read-Only Memory); 2, after the upper computer issues an instruction, the control card cooperatively controls the on-off state of the laser light source and the deflection angle of the laser galvanometer, and the position and the focal length of the lens are adjusted; 3, positioning an instruction according to a target point of the upper computer; the control card cooperatively controls the laser and the galvanometer to coarsely position the center of the target; and performing fine positioning on the center of the target by taking the target point obtained by coarse positioning as an initial reference position. The integrated galvanometer laser control device has the advantages that the environmental adaptability, the control precision and the operation convenience of the integrated galvanometer laser control device are remarkably improved.

The utility model discloses a replaceable pin type coding mark point for a laser projection positioning system, which belongs to the technical field of laser projection and comprises a target and a positioning pin which are detachably and fixedly connected with each other, and the target is further provided with a coding reference point suitable for being identified by the laser projection positioning system. According to the embodiment of the utility model, the target and the positioning pin are detachably connected, only one set of target and one set of positioning pins with different diameters need to be prepared, and flexible assembly can be carried out according to the size of a datum hole in a workpiece and a required coding reference point during use, so that the number of spare parts is reduced, and the use cost is saved. And meanwhile, high-efficiency and high-precision adaptation to datum holes with different diameters is realized, so that a projection system can identify coding standard points, and the aim of aligning a coordinate system of a CAD model corresponding to a workpiece object is realized.

The invention relates to the technical field of projection modules, and particularly discloses an LCOS laser projection module, which comprises a laser light source module, a laser speckle eliminator, a reflector, a diffuser, a collimating lens, a fly-eye lens, a relay lens, a first linear polarizer, a polarizing beam splitter, an LCOS chip, a second linear polarizer and a projection lens which are sequentially arranged along a light transmission path, the laser light source module is provided with a light source optical axis and is used for emitting light, and the light is projected by the projection lens after being modulated along a light transmission path to form a projection image. The light emitted by the laser light source has the advantages of narrow divergence angle, small light-emitting area and good light concentration and collimation, the resolution of a projected image can be improved, the projected image is bright in color and high in definition, and the requirements of simple structure and small size are met. Meanwhile, the laser speckle can be eliminated through the matching of the laser speckle eliminator and the diffusion sheet, and the projection image can meet the high contrast through the existence of the first linear polarizer and the second linear polarizer.

The invention discloses a laser projection control method and a distributed control device. The laser projection control method comprises the following steps: step 1, designing a first control board card for galvanometer control; the first control board card comprises a first main control chip for realizing real-time calculation, a static random access memory for external memory expansion, a differential driving chip for transmitting a galvanometer control signal and a chip for realizing an independent communication system; 2, designing a second control board card for laser control, focal length control and temperature monitoring; and the second control board card comprises a second main control chip for realizing real-time calculation, a motor driving chip for driving a motor to move the lens to control the focal length, a laser control circuit amplifier chip and a thermistor. According to the invention, the effect of cooperative control of the laser and the galvanometer is realized.

The invention belongs to the technical field of aerospace composite material manufacturing, and discloses a laser projection positioning method and system for a composite material sub-layer. The system comprises a target spot which is integrated in design models of various structural parts in advance by adopting a standardized geometric feature shape, and is connected with a target seat in an inserting manner through a tail end convex part of the standardized geometric feature shape; the target seat is mounted on the surfaces of parts or molds with different sizes and shapes through an adjustable fixing structure; the target seat connecting shaft adopts a long-strip-shaped cylindrical part, two ends of the target seat connecting shaft are provided with shaft sections with different diameters, and the target seat connecting shaft integrally presents a stepped shaft characteristic and is used for connecting a plurality of target seats, so that the plurality of target seats capture a positioning reference in a laser projection system. The method breaks the technical prejudice that a special tool can guarantee high precision, large-size positioning can only depend on mechanical hard connection, reliability is inevitably reduced by manual intervention, and multiple functions and low cost cannot be achieved at the same time.

The invention discloses a detection module, a detection device, a detection system and a detection method. The detection module comprises a scanning unit which is configured to perform three-dimensional scanning on a detected surface and comprises a laser projection device and a laser receiving device, the laser projection device comprises a laser source and at least two MEMS micro-scanning mirrors, the at least two MEMS micro-scanning mirrors are configured to reflect laser emitted by the laser source to the detected surface, and the laser receiving device is configured to receive the laser emitted by the detected surface; the laser receiving device is configured to receive the laser reflected from the measured surface to obtain at least two laser images of the measured surface; an RGB image sensor configured to capture an RGB image of the measured surface; and a processor connected to the scanning unit and the RGB image sensor, and configured to splice the at least two laser images together, and detect a defect on the detected surface based on the spliced laser image and RGB image.

The invention discloses a tunnel construction deformation monitoring system based on machine vision and a monitoring method thereof, and belongs to the technical field of tunnel construction monitoring. Laser emitters arranged in a tunnel project light spots to a ground screen, an industrial camera is used for collecting images, the light spots are automatically identified, coordinates are calculated, and the coordinates are compared with an initial reference; according to the tunnel convergence and settlement displacement monitoring system and method, light spots are automatically recognized and three-dimensional coordinates are calculated through a vision measurement system composed of the laser transmitter and the industrial camera, unmanned and high-precision real-time monitoring of tunnel convergence and settlement displacement is achieved, the system is simple in structure and convenient to operate, and the working efficiency is improved. The problems of manual measurement errors and low efficiency are effectively avoided, the laser projection screen is arranged on the ground, interference of a complex environment in a tunnel on direct measurement is effectively avoided, meanwhile, the time control switch integrated in the system can set working time according to requirements, and intelligent management of energy is achieved.

The invention discloses a roll-to-roll based double-sided LDI exposure system and exposure method, relates to the technical field of flexible electronic manufacturing, and can solve the problem that the alignment precision is reduced due to the fact that existing double-sided laser imaging equipment cannot compensate dynamic deformation of a base material in the transmission process. The system is sequentially provided with a marking station and an exposure station in the conveying direction of a base material, and the marking station is provided with a marking device used for making marking points on the base material; the exposure station is provided with a pose adjusting mechanism and two laser projection head arrays which are driven by the pose adjusting mechanism and oppositely arranged on the upper side and the lower side of a base material, the alignment camera collects marking point images on the base material, and the control device controls the pose adjusting mechanism to adjust the poses of the laser projection head arrays according to image information, so that an exposure pattern is aligned with a target area of the base material. Therefore, the dynamic error can be adaptively compensated, the alignment precision is improved, the exposure method can realize parallel processing of marking and exposure, and the production efficiency is effectively improved.

The present invention relates to a method for controlling equipment, a control device, home appliances, and a storage medium, and concerns the field of smart control. The method includes generating a virtual function interface by a laser projection assembly, displaying the virtual function interface in a target projection area, receiving a selection operation on the virtual function interface to confirm a target program, and controlling the home appliance to execute the target program. The present invention can save panel space in home appliances, further reduce the product volume of home appliances, decrease the space occupied by home appliances, and improve the user experience of using home appliances.

The utility model belongs to the technical field of automobile part detection, and particularly relates to a steering wheel horizontal calibration device which comprises a detection platform, an object placing plate, an installation panel wall, a signal receiving wall and a projection wall are installed on the detection platform, a steering wheel blank to be detected is fixed on the detection platform, then the position and the height of the installation panel wall are adjusted, and the signal receiving wall is arranged on the signal receiving wall. Secondly, a laser projection gun and a light source irradiator are made to be aligned with the end face of the steering wheel blank, then the laser projection gun and the light source irradiator are started, laser beams are projected to the end face of the steering wheel blank, a clear projection path is formed on a projection wall, and meanwhile a signal receiving wall receives the laser beams and converts the laser beams into electric signals for processing; compared with the prior art, accurate measurement of the levelness of the end face of the steering wheel blank is improved, and definition and accuracy in the detection process are improved.

1. The name of the design product: red light positioning three-dimensional scanning instrument. 2. The use of the design product: with red light positioning function, used in the fields of industrial detection and automation, laser processing scanning, laser radar and laser projection, etc. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model relates to the technical field of intelligent parking lots, in particular to an intelligent parking lot parking space guiding system based on a wireless network, which comprises a plurality of guiding mechanisms positioned in a garage and connected with a ceiling, and wireless signal intensifiers and central control assemblies are arranged in the guiding mechanisms and used for providing stable and reliable local area network connection. And the position and posture of the guiding mechanism are dynamically adjusted according to the parking space state information and the vehicle position information. The guiding mechanism comprises a mounting base, an adjusting support, a stabilizing base, a lifting assembly, a hoisting base, a rotating assembly, a guiding frame, a laser projection assembly and the like. By integrating various information output modes such as laser projection, the display screen and the induction camera, clear parking navigation is provided for a vehicle owner, and the parking space searching time is shortened. Compared with a traditional system, the system has the advantages of being convenient to install, low in maintenance cost and high in expansibility, and is particularly suitable for parking lots with large or complex structures.

The application discloses an optical engine module and a laser projection device, and belongs to the laser projection field.The optical engine module comprises a light source assembly, a prism assembly, a light valve assembly and a lens assembly, wherein the light valve assembly at least comprises a first light valve and a second light valve, the prism assembly is used for guiding the incident light corresponding to each light valve to the corresponding light valve respectively, and guiding the light beams output by each light valve to the lens assembly, the image light beams output by the first light valve and the image light beams output by the second light valve are dislocated at the irradiation position of the lens assembly, so that the resolution of the image picture projected by the lens assembly can be improved without setting a vibrating mirror, the structural components of the optical engine module are less and the volume of the optical engine module is small, the problem that the components of the optical engine module are more and the volume of the optical engine module is large in the related art can be solved, and the effects of simplifying the structure of the optical engine module and reducing the volume of the optical engine module are achieved.

The disclosure belongs to the field of MicroLED, and discloses a projection proximity mass transfer device. The device includes a support layer, a dynamic release layer and a adhesive foam layer. The support layer is a base layer; the dynamic release layer is arranged on the support layer. Under laser radiation, the dynamic release layer is ablated to generate ablation gas, thereby causing the dynamic release layer to generate blister; the adhesive foam layer is arranged on the dynamic release layer, and the foam layer is in contact with the MicroLED to be transferred. Under the action of thermal stimulation or laser, the foamed particles inside the adhesive foam layer expand, reducing the adhesion of the foam layer. Thereby, blisters with microstructures are formed at the interface between the stamp and the chip, thus realizing peeling of the MicroLED to be transferred.

To reduce clipping and loss of brightness of a projected image.SOLUTION: There is provided a laser projection system (200), where light output by an optical engine is directed to a first scan mirror (206) as two angularly separated laser light beams (1002 and 1102). The angularly separated laser light beams typically have different angles of incidence (1010 and 1110) on a second scan mirror (208) of an optical scanner. Respectively different levels of magnification are applied to a beam diameter of each of the angularly separated laser light beams in a first dimension, such that the angularly separated laser light beams have respectively different beam diameters (1012 and 1112) upon incidence at the second scan mirror. The different beam diameters of the angularly separated laser light beams result in regions of incidence of each of the angularly separated laser light beams on the second scan mirror being equal or substantially similar.SELECTED DRAWING: Figure 1

The invention discloses a fat melting method and system capable of keeping energy consistent and a storage medium. The fat melting method comprises the steps that relative motion data of a laser projection end and the body surface are collected in real time, and point cloud data of the body surface are collected; according to the relative motion data and the body surface point cloud data, constructing a dynamic three-dimensional surface model of the human body surface area; acquiring a first laser irradiation parameter at the first breathing moment; according to the dynamic three-dimensional surface model, a first parameter of a fat melting area at the first breathing moment is obtained; according to the dynamic three-dimensional surface model, a second parameter of a fat melting area at a second breathing moment is obtained, and the second breathing moment is larger than the first breathing moment; calculating a parameter difference value according to the first parameter and the second parameter; the power of the first laser irradiation parameter and the single irradiation duration are corrected based on the parameter difference value, and a second laser irradiation parameter is obtained; and irradiating the fat melting area by using the second laser irradiation parameter.

The utility model discloses a sound box with an improved structure, which comprises a sound box main body, the sound box main body comprises a main body shell, the front surface of the main body shell is provided with a loudspeaker assembly, the upper surface of the main body shell is provided with a control panel, and the control panel is electrically connected with the loudspeaker assembly; the upper surface of the main body shell is provided with a full-surrounding light source surrounding the peripheral side of the control panel, and the full-surrounding light source is electrically connected with the control panel; a laser projection module is arranged at the edge part of the upper end of the front surface of the main body shell and is electrically connected with the control panel; during use, the laser projection module inclines downwards and projects laser beams to the ground. By means of the structural design, the ground laser projection device has the advantages of being novel in structural design, convenient to use and good in attractiveness, and the atmosphere feeling in the using process can be enhanced in a ground laser projection mode.

This invention discloses a beam expander lens for laser scanning projection, relating to the field of laser projection display technology. It includes a first lens group, a second lens group, a third lens group, and a fourth lens group, arranged sequentially along the optical axis. These four lens groups together form the complete lens. The first, second, third, and fourth lens groups are arranged in a positive-negative-negative-negative optical power configuration. Through innovative optical architecture and optical power allocation, a large-angle beam expander function is achieved within a space of less than 35mm in total length, greatly saving internal space. By utilizing the chromatic aberration correction capability of the first lens group and the aberration correction capabilities of the second, third, and fourth lens groups, high-contrast imaging is achieved across the entire field of view and wavelength range, with concentrated dot matrix energy, meeting the requirements of high-resolution projection.

The present disclosure provides a laser projection device, comprising: a shell, the shell is provided with a light outlet; a rotating cover is arranged at the light outlet; a first driving assembly is connected with the rotating cover to drive the rotating cover to expose or cover the light outlet; a rotating induction piece is connected with the first driving assembly; a detection piece corresponds to the rotating induction piece; a controller corresponds to the rotating induction piece, the rotating induction piece is used to rotate with the rotating cover under the driving of the first driving assembly, and contacts with the detection piece in the rotating process to trigger the detection piece to detect the rotating angle, and the controller controls the start and stop of the first driving assembly according to the detection result. The rotating process of the rotating cover can be continuously detected by the detection piece, so as to ensure whether the rotating cover rotates to the preset target position, prevent the rotating cover from not rotating to the position or rotating excessively, cause the flash gap at the rotating cover to be too large, cause a large amount of dust to enter the shell and adhere to the lens surface, and affect the projection effect and image definition of the lens.

The application discloses a kind of underwater concrete crack width automation measurement system and method based on double laser, it is related to underwater structure health monitoring and optical measurement technical field.The application includes: double laser projection module, for projecting a pair of circular laser points with fixed physical spacing to underwater concrete surface to be measured as physical scale reference;Image acquisition module, including underwater camera, for collecting image containing laser point and crack area;Data processing module, for performing underwater camera calibration, laser point detection, crack image segmentation and crack physical width calculation.The method corrects the image geometric distortion caused by "water-glass-air" refraction by establishing an accurate underwater multi-interface refraction imaging model;Nonlinear mapping relationship from image pixels to physical space is established using double laser points;Based on unsupervised crack segmentation model, crack area is automatically segmented, the physical width of each position of crack is calculated and width distribution cloud chart is generated.

A laser alignment tool for flange fit-up includes tapered centering nuts that seat in flange bolt holes, a mounting bolt to secure the nuts, and a connector rod extending through the nuts. A yoke bracket at the laser end carries a rotatable laser housing with an integrated laser projection system. A manual actuator controls a clamping head that selectively locks the laser housing orientation. Multiple bubble levels on the nuts, rod, and housing provide comprehensive leveling verification. The tool projects a visible laser line across flange surfaces to provide precise visual alignment reference for positioning flanges relative to corresponding components, eliminating inaccuracies of manual alignment techniques while enabling single-operator use with 360-degree rotational adjustment capability for complex angular alignments in oil and gas applications.

The invention discloses a laser decoherence and holographic display speckle noise suppression system and method based on controllable fog scattering. The system comprises a laser light source module, an optical shaping module, a fog scattering module and a holographic display module which are arranged in sequence. The fog scattering module generates a scattering medium layer composed of micron-sized fog drops in an ultrasonic atomization or airflow disturbance mode, so that the space and time coherence of the collimated laser is reduced under the action of multiple times of scattering, and therefore speckle noise in holographic display imaging is effectively restrained. By adjusting the particle size distribution, the concentration and the disturbance frequency of the fog drops, continuous controllability of the decoherence intensity can be achieved, and the imaging brightness and the imaging definition are both considered. The system is simple in structure and high in compatibility, and can be directly embedded into an existing computer-generated holographic display system without an additional optical modulation device; and meanwhile, the method has the advantages of low cost, high real-time performance, suitability for a multiband laser system and the like, and is suitable for the optical fields of holographic display, laser projection, interference measurement and the like.

This utility model discloses a 3D scanner with replaceable filters, comprising: an instrument body; a camera unit and a laser projection unit disposed within the instrument body, wherein the camera in the camera unit and the projection surface in the laser projection unit are both disposed on the measurement surface of the instrument body; and a supplementary lighting unit located around the camera and disposed on the measurement surface, wherein the filter unit in the supplementary lighting unit is detachably disposed at the front end of the light source assembly in the supplementary lighting unit. This utility model significantly improves the scanner's adaptability to different material surfaces and scanning quality through the design of replaceable filter units, optimizes image clarity and detail, and allows for flexible adjustment and rapid replacement of filters according to the characteristics of different materials.

This invention proposes a laser-assisted alignment device and method for a drilling machine with a single-line laser. The single-line laser-assisted alignment device includes a base, a magnet, a laser adjustment seat, and a single-line laser emitter. The laser adjustment seat houses the single-line laser emitter, and screws are located around its sides to adjust the emitter's orientation. The base includes a bushing and a branch. The bushing is fitted onto the root flange of the drilling machine's chuck, with the bushing's center hole diameter corresponding to the outer diameter of the root flange. The bushing has a radial branch, one end connected to the bushing and the other end connected to and fixed to the laser adjustment seat. The branch has slots for connecting and fixing the base to the drilling machine. The magnet is inserted into the slots of the branch to magnetically attach the base to the drilling machine. By adjusting the position of the laser projection line of the single-line laser emitter, the laser projection line is projected onto the rear vertical plate through the gap in the laser position adjustment auxiliary template, achieving workpiece alignment.