15 results about "Laser triangulation" patented technology

This utility model discloses a laser triangulation ranging device and system; relating to the field of laser ranging technology; including a laser for emitting laser light towards the object being measured; a light-receiving lens assembly for receiving the reflected laser light from the object being measured and correcting and focusing the reflected laser light spot; the light-receiving lens assembly includes a focusing lens and multiple correction elements; the light spot of the reflected laser light from each correction element is corrected in different properties and falls onto the light-receiving element; this solution improves the structure of the traditional laser triangulation ranging optical path by correcting the light spot of the reflected laser light spot in different properties through the light-receiving lens assembly, ensuring measurement accuracy, reducing costs, and effectively accelerating assembly efficiency; by increasing the light spot size in the laser transmission direction at the position of the light-receiving element through the light-receiving lens assembly, the center of the light spot does not need to be aligned with the center of the light-receiving element to be detected, reducing the structural accuracy of the laser triangulation ranging device and improving assembly efficiency.

This utility model discloses a brake disc testing device for new energy vehicles, including a platform. A control panel and a three-jaw chuck are respectively installed on the top of the platform. A transverse adjustment rail is rotatably mounted above the platform around the central axis of the three-jaw chuck. Laser triangulation sensors are fixed at equal intervals on the transverse adjustment rail via a fixing mechanism. A distance-fixing mechanism is provided on the transverse adjustment rail, equidistant from the bottom laser emission end of the laser triangulation sensor to the top of brake discs of different thicknesses. In this brake disc testing device for new energy vehicles, rotating a second rotating shaft causes the distance-fixing rod and several equally spaced laser triangulation sensors to move downwards simultaneously. When the lower end of the distance-fixing rod contacts the top of the brake disc, the distance from the top of the brake disc of different thicknesses to the bottom laser emission end of the laser triangulation sensor is equal, ensuring the accuracy of brake disc flatness detection.

The optical path symmetry type differential multi-reflection laser displacement sensor comprises a laser module, a mirror I, a lens group I, a lens group II, a mirror II, a lens group III, a mirror III, a diaphragm I, a diaphragm II and a photoelectric detector; the laser beam emitted by the laser module is shot to the mirror I, is collimated after being reflected through the lens group I, and is perpendicularly irradiated to a measured object; after being diffusely reflected by the measured object, one reflected laser beam is converged through the receiving lens group II to form reference light, and the other reflected laser beam is converged through the lens group III to form measurement light; the reference light is reflected by the mirror II, is focused and imaged on the photoelectric detector through the diaphragm I; the measurement light is reflected by the mirror III, is focused and imaged on the photoelectric detector through the diaphragm II; the mirror II and the mirror III are arranged in parallel and symmetry. The present application realizes high-precision displacement measurement by using the laser triangulation method, effectively suppresses the error caused by laser jitter, and improves the measurement stability.

This invention discloses a range-adjustable laser triangulation ranging sensor, comprising a transmitting unit and a receiving unit. The transmitting unit includes a first laser for emitting laser light and a first transmitting lens for focusing the emitted laser light. The first laser emits laser light, which is focused by the first transmitting lens and reaches the surface to be measured in a first range. After reflection, the laser light reaches the receiving unit. The transmitting unit also includes a second laser, a third laser, and an Nth laser, where N is greater than or equal to 2. The laser light emitted by the second, third, or Nth laser is reflected by a semi-transparent mirror to overlap with the laser emission path of the first laser, reaching the surface to be measured in the second, third, or Nth range, respectively. This ranging sensor, by incorporating multiple laser emitters within a single sensor, with each laser generator corresponding to a specific optical path and a specific range, enables range adjustment for a single sensor.

Techniques for inspecting a substrate can include scanning the substrate across a plurality of scan positions using an interrogation beam having a width substantially equal to or greater than a diameter of at least one surface feature on a surface of the substrate to generate scanning results. A set of raw centroid calculation results can be generated based on the scanning results. An error property can be determined and removed from the raw centroid calculation results to generated refined centroid calculation results. A characteristic of the surface feature can be determined based on the centroid calculation results.

The invention provides a speckle suppression method, and belongs to the technical field of measurement technologies and instruments. Obtaining a gray scale picture of the light spot through a laser triangular sensor; converting the grayscale picture into a numerical matrix; dividing a light spot area into a plurality of sub-areas with the same size based on the numerical matrix; calculating the center of mass of each sub-region in the direction; calculating an overall mean value and a standard deviation based on the centroid; sub-regions meeting conditions are screened out through a preset threshold value to form a set; and calculating the actual centroid of the light spot based on the sub-region set satisfying the condition. According to the method, a power weighting mechanism is introduced to enhance the contribution of high-intensity pixels to a centroid calculation result, and meanwhile, the interference of low-intensity noise pixels is inhibited, so that the calculated light spot centroid position is closer to a real center, and the measurement uncertainty caused by low-signal pixels is effectively reduced.

The application discloses a gravure roller processing defect detection method, and relates to the technical field of roller defect detection.The method comprises the following steps: step one, synchronously collecting multi-source data of the surface of the roller by a multi-modal sensor array and controlling the multi-source data, wherein the multi-modal sensor array comprises a linear array CCD, a laser triangulation sensor, an eddy current sensor and an infrared thermal imager.In the application, multi-modal sensor array is used to synchronously collect and fuse data, a three-dimensional integrated digital model containing texture, topography and physical characteristics is constructed, and a cascade deep learning network is combined for identification, so that closed-loop repair is finally realized.The application improves the comprehensiveness and accuracy of detection, can simultaneously find various macroscopic and microscopic defects on the surface and near the surface, greatly reduces the missed detection rate, enhances the automation and intelligent level, realizes full-process automation from detection, analysis to repair decision, and reduces the dependence on manpower.

The application discloses a laser triangular displacement signal deconvolution and symmetric reconstruction method and a laser displacement detection device, acquires optical point spread functions of one-dimensional linear array photoelectric detectors in a measuring range of the device at different physical positions, and constructs a space time-varying optical point spread function reference library; a one-dimensional original light intensity signal of a measured surface is collected, corresponding optical point spread functions are called from the reference library after initial positioning of a light spot, iterative deconvolution is performed on the original light intensity signal, termination iteration is determined by a normalized residual change rate and a preset maximum iteration number, and a physical sharpened light spot signal is obtained; signal variance and statistical kurtosis of a main peak local area are calculated, and a dynamic pixel window width is adaptively adjusted; an asymmetric index is calculated in the dynamic pixel window, forced symmetric reconstruction is performed when the asymmetric index is greater than a preset truncation threshold, sub-pixel centroid coordinates are extracted based on a reconstructed symmetric waveform, and an actual displacement value is calculated.

This invention discloses a deep learning-based optical plane calibration method and system, belonging to the field of optical plane calibration technology. The method includes: constructing a geometric parameter evaluation network based on the PointNet network structure; constructing a virtual data generation space, acquiring simulation calibration data based on a multi-scale error modeling mechanism, and constructing a simulation sample dataset; training and validating the geometric parameter evaluation network based on the simulation sample dataset to obtain a trained geometric parameter evaluation network; acquiring calibration images of a laser triangulation system, extracting three-dimensional laser point cloud data from the calibration images, and performing optical plane calibration based on the trained geometric parameter evaluation network. This invention significantly improves the anti-interference capability and overall accuracy of the calibration algorithm by constructing a neural network specifically for laser point clouds to accurately fit laser point clouds under error conditions.

This invention relates to the field of shipborne salvage control technology, and discloses a scheduling and control method and system for shipborne crushing and salvage equipment. The scheduling and control system of the shipborne crushing and salvage equipment includes a salvage unit, a crushing unit, a dewatering unit, and a storage unit sequentially connected in series on the operating vessel to form a continuous material processing line. A central controller receives real-time monitoring data from weighing sensors, laser triangulation sensors, and strain sensors. Based on the monitoring data, a preset dynamic scheduling algorithm generates collaborative control commands in real-time and sends these commands to the actuators of the salvage unit, crushing unit, and dewatering unit to achieve seamless connection and collaborative operation between the units. Through the central controller and intelligent algorithms, the operating rhythm of the salvage, crushing, and dewatering units is actively coordinated, achieving predictive feeding and seamless connection, completely eliminating waiting times between units in the traditional mode, and maximizing equipment utilization.

The present invention relates to a measuring instrument (1, 20) for a laser tool (2) for measuring the distance (30) between the measuring instrument (1, 20) and an object (7). The measuring instrument has a laser triangulation sensor (21, 22) through which a measuring laser beam (23) can be radiated onto the object (7, 25). When the measuring laser beam hits the object (7, 25), it can be reflected by the object (7, 25) as a reflected measuring laser beam (28) and can be received by the laser triangulation sensor (21, 22). The measuring instrument has a housing (17) in which the laser triangulation sensor (21, 22) is arranged. According to the invention, the housing (17) has an external shape (18) corresponding to the external shape (19) of the optical protection element (5, 16) of the processing laser optical system (4) of the laser tool (2), thereby allowing the housing (17) and therefore the measuring instrument (1, 20) to be inserted into the laser tool (2). The present invention also relates to a laser tool (2) having such measuring instruments (1, 20), a workpiece processing device (3), in particular a workpiece processing robot, and a method for measuring distance (24).

This utility model discloses a device for detecting the surface flatness of adhesive-backed products, relating to the technical field of flatness detection devices. It includes a transmitting laser, a PLC controller fixedly connected to the side wall of the transmitting laser, a detection mechanism for detecting adhesive-backed products at the top of the transmitting laser, and an auxiliary mechanism for assisting the detection mechanism at the side of the transmitting laser. The adhesive-backed product is placed in a placement frame. When a positioning camera detects that the placement frame has moved below the laser array, the PLC controller controls the laser array to start emitting laser light towards the placement frame. An industrial camera captures the laser light reflected from the adhesive-backed product. A local three-dimensional contour of the adhesive-backed product is constructed using laser triangulation. The PLC controller, combined with the three-dimensional contour, detects the surface flatness of the adhesive-backed product. This application enables assembly line-style detection with high detection efficiency, solving the problems of low detection efficiency and difficulty in mass production of existing adhesive-backed product surface flatness detection devices.

This utility model relates to the field of optical measurement technology, specifically to a direct-incident and oblique-incident laser triangulation ranging system, including a laser emitting module and a receiving module. The laser emitting module is used to selectively provide a direct-incident optical path for vertically projecting a laser beam onto the measurement area, or to provide an oblique-incident optical path for obliquely projecting a laser beam onto the measurement area. The receiving module includes a receiving mirror group and a photosensitive chip. The receiving module is used to receive the laser beam reflected from the measurement area and to focus it onto the photosensitive chip for imaging. The position of the photosensitive chip is adjustable so that it receives and adapts to the direct-incident optical path at a first position and to the oblique-incident optical path at a second position. When switching measurement modes, this utility model only requires selecting the optical path and adjusting the position of the photosensitive chip internally, without changing the external mounting posture of the entire sensor.

Techniques for inspecting a substrate can include scanning the substrate across a plurality of scan positions using an interrogation beam having a width substantially equal to or greater than a diameter of at least one surface feature on a surface of the substrate to generate scanning results. A set of raw centroid calculation results can be generated based on the scanning results. An error property can be determined and removed from the raw centroid calculation results to generated refined centroid calculation results. A characteristic of the surface feature can be determined based on the centroid calculation results.

This invention provides a weld appearance inspection device and method based on line laser 3D contour and edge calculation. The device uses line laser triangulation to acquire the 3D contour of the weld, accurately extracting geometric features such as weld height and width, thus eliminating measurement errors by replacing manual methods. It analyzes data images in real time through embedded algorithms, automatically identifying defects and completing conformity evaluations, avoiding the influence of human subjectivity. The device features a handheld, integrated design with a built-in battery to ensure continuous operation in the field, offering high mobility. Equipped with an explosion-proof shell, it is suitable for special hazardous environments such as petrochemical plants. The core uses a domestically produced high-performance chip to support local model deployment, ensuring data security while promoting domestic production. This invention can improve the accuracy and efficiency of weld inspection, is suitable for on-site intelligent inspection needs in fields such as pipelines and special equipment, and has good industrialization prospects.