318 results about "Line scan" patented technology

The invention discloses a circuit board dispensing quality detection device, and relates to the technical field of circuit board processing detection, the circuit board dispensing quality detection device comprises a base, a conveying positioning mechanism, an upper shooting detection unit and a lower shooting detection unit, the conveying positioning mechanism is installed on the base and is used for conveying and positioning a carrier carrying a circuit board; the upper shooting detection unit and the lower shooting detection unit are respectively located above and below the conveying positioning mechanism, are used for acquiring dispensing images on the front and back surfaces of the circuit board and respectively comprise a shooting module, the shooting module comprises two symmetrically arranged three-dimensional line scanning cameras, and shooting light paths of the two symmetrically arranged three-dimensional line scanning cameras are inclined and are crossed and opposite; the shooting light path of the central camera is vertical; the plurality of circumferential cameras are circumferentially distributed around the central camera, a shooting light path is inclined, and the inclination angle is adjustable; and the light source assembly is used for supplementing light when the three-dimensional line scanning camera, the central camera and / or the circumferential cameras collect images. The scheme is used for automatically detecting the glue coverage quality of the circuit board after glue dispensing.

The invention discloses a complex metal product internal defect analysis method and system based on radiographic inspection, a spiral track scanning path is generated through a workpiece three-dimensional model, a six-axis cooperative mechanical arm is utilized to drive a miniature X-ray source to move along the path, and + / -5 [mu] m positioning compensation is realized in combination with a piezoelectric ceramic driving mechanism. And the detector array module is matched to carry out multi-mode ray scanning and real-time data acquisition. Collected data are transmitted to a real-time data processing module through an LVDS differential interface, an FDK algorithm is executed by a JetsonTX2 embedded GPU to complete tomographic image reconstruction, a 3D-ResNet neural network model is loaded through a TensorRT inference engine to achieve intelligent defect recognition, and finally a detection report is generated and uploaded to an MES system. The system comprises a ray generation module, a multi-degree-of-freedom mechanical arm bearing module and the like, a high-voltage generator circuit comprises a ZVS resonance circuit, and a motion control module adopts an FPGA + ARM dual-core architecture.

Disclosed in the present invention is a three-dimensional reconstruction method based on kinematic calibration for the monomerization of a line-structured light point set. The method comprises: rigidly combining an area-array camera with a linear-line-structured light emitter, and mounting same on a motion platform; using a standard radius value of a standard sphere and line-structured light scanning data to calibrate structural parameters of the motion platform of a measurement apparatus; with the calibrated spherical center position of the standard sphere and the standard radius of the standard sphere as constraints, calibrating a spatial position relationship of a line-scanned point set; controlling the motion of the five-axis motion platform, and acquiring scanning data of a measured piece in different poses; and using the scanning data and a real-time point cloud calibration matrix to complete high-quality three-dimensional model reconstruction of the measured piece from its multi-pose scanning. The system comprises: an apparatus fixing module, a calibration module, a point cloud calibration module, a scanning module, and a point cloud reconstruction module. By means of using the present invention, the reconstruction accuracy of a line-structured light three-dimensional point cloud model can be improved. The present invention can be widely applied to the field of three-dimensional reconstruction.

The invention discloses a static flying spot scanning method based on a flying focus point x-ray source, and belongs to the technical field of x-ray scanning, and the method comprises the following steps: S1, providing a flying focus point x-ray source; s2, providing a static restraint device; s3, controlling the focus of the flying focus x-ray source to move or switch according to a preset scanning mode, so that x-rays irradiate the scanned object point by point through a hole groove or a spiral gap in the static constraint device, and performing flying spot scanning on the scanned object; and S4, collecting a scattering x-ray signal of the scanned object by using a detector, converting the scattering x-ray signal into an electric signal, carrying out analog-to-digital conversion, and carrying out signal processing to generate a scanning image. According to the static flying spot scanning method based on the flying focus point x-ray source, a traditional combination of a fixed focus point and a high-speed mechanical device is replaced by the combination of the electrically-controlled x-ray source capable of changing the focus point and the static constraint device, and the scanning performance is improved.

The invention discloses a laser scanning type overhead conductor health detection system and method, and relates to the technical field of power equipment detection, and the method comprises the steps that a laser scanning module scans the contour of an overhead conductor according to a laser scanning line, detects the environmental interference, and corrects the scanning track of the laser scanning line in real time based on the environmental interference information; acquiring wire scanning data; the data processing module extracts wire contour data based on the wire scanning data, fits a wire diameter according to the wire contour data, and matches a standard wire diameter library to obtain wire diameter data; and the data analysis module calculates the wear rate according to the wire diameter data of the wire, evaluates the health state of the wire in combination with the multi-element wire information, and obtains a health evaluation result. According to the invention, the track deviation of the laser under environmental disturbance can be compensated in a complex scene, the lead diameter measurement precision is improved, the health state of the lead is evaluated by fusing the lead diameter data with the multi-element lead information, and the reliability of the lead health state evaluation result is improved.

The invention belongs to the technical field of infrared thermal imaging defect detection, and particularly discloses an in-situ infrared thermal imaging detection device based on low-frequency modulation magnetic field excitation, which comprises a magnet yoke, an infrared thermal imager, a computer, a modulation power supply and an excitation coil group, the excitation coil group at least comprises a first excitation coil, a second excitation coil, a third excitation coil and a fourth excitation coil; the modulation power supply respectively introduces low-frequency alternating currents with different phases and direct currents with different directions into the first excitation coil, the second excitation coil, the third excitation coil and the fourth excitation coil; through composite excitation of an orthogonal direct-current magnetic field and a low-frequency rotating alternating-current magnetic field, the device can form a rotating low-frequency alternating-current magnetic field in a to-be-detected pipeline, the rotating magnetic field uniformly sweeps a detection area in a plurality of periods, the influence of eddy current distribution direction sensitivity is eliminated, and large-area uniform heating is realized; the problem of low efficiency of a traditional spot scanning or line scanning mode is avoided, and the coverage area of single detection is remarkably increased.

The invention discloses a power distribution area energy storage-photovoltaic oscillation cooperative suppression method based on impedance remodeling, and belongs to the technical field of power system stability control. According to the method, the impedance characteristic of the system is scanned online in real time, the virtual impedance controller parameters of the photovoltaic inverter are dynamically optimized, and the impedance frequency characteristic of the zone area network is actively remodeled, so that the zone area network is always far away from a stable critical point, and oscillation is prevented from occurring from the source. When it is detected that the oscillation energy exceeds the standard, the system immediately triggers the energy storage device to be switched to a virtual synchronous generator mode, phase information of a plurality of energy storage units in a fiber channel synchronization cluster is used, anti-phase damping current opposite to the oscillation trend is injected, and the oscillation energy is rapidly consumed. The invention provides a double-layer suppression strategy based on impedance remodeling and energy storage cooperation, the cooperation of photovoltaic impedance active prevention and energy storage instantaneous suppression is realized, the problem that a traditional fixed parameter damper loses efficacy due to frequency drift is solved, and the operation stability of a high-proportion renewable energy power distribution network is improved.

The invention discloses a wafer defect detection device and method. The device comprises a lighting system, a motion platform, a detection system and a signal processing system. The illumination system provides illumination light beams in at least three different incident directions for the surface of the wafer and forms overlapped linear illumination light spots; the motion platform drives the wafer to perform line scanning; the detection system comprises a plurality of detection channels with coplanar optical axes, scattered light is collected and converted into electric signals, and the detection channels comprise large-angle detection channels with large included angles between the optical axes and the normal of the wafer and small-angle detection channels with small included angles between the optical axes and the normal of the wafer. The at least one detection channel and the at least one illumination beam are located on the two sides of the normal of the wafer respectively; the signal processing system processes the electrical signals to determine defect information. According to the invention, large and small angle detection channels with specific angles are configured to cooperatively work with illumination light beams in specific directions, so that high-sensitivity detection of all types of spherical, sphere-like and flat pollutants, damage defects and the like is realized, and missing detection is avoided.

The invention provides an image acquisition system and an image data processing method and device.The system comprises a multi-line scanning image sensor, a light source and a data processing unit, and the working face of the multi-line scanning image sensor is parallel to the plane where a measured object is located; a linear photosensitive unit on the working surface of the multi-line scanning image sensor deflects at a preset angle relative to the movement direction of a measured object, and a light emitting direction of the light source and a plane where the measured object is located form a preset angle; the motion step length of the measured object is a preset multiple of the size of a pixel unit in the linear photosensitive unit projected on the surface of the measured object; and the data processing unit is used for receiving the initial image data of the detected object sent by the multi-line scanning image sensor and carrying out time delay integral processing, pixel offset processing and accumulation processing to obtain oblique image data for detecting the defects of the detected object. The system can effectively reduce the production cost of scratch detection.

Apparatuses, systems, and methods are provided for generating composite displays of oral areas. To generate the composite display, X-ray image data from an X-ray scan of an oral area of an individual and a three-dimensional model generated from a three-dimensional scan of the oral area of the individual are used. The X-ray image is correlated to a rendering generated from the three-dimensional model in the composite display such that structures in the X-ray image are matched to structures in the rendering.

The invention relates to the technical field of laser vision fusion, and discloses a belt tearing detection method and device based on laser vision fusion. The method comprises the following steps: scanning depth contour data of a running belt by adopting a line laser; a line-scan digital camera is adopted to shoot a texture image of the running belt, and depth feature data are recognized based on the texture image; performing weighted merging on the depth contour data and the depth feature data to generate first depth data; correcting the first depth data to obtain second depth data; and according to the belt working condition, a tearing judgment threshold value is set, a depth abnormal area in the second depth data is analyzed based on the tearing judgment threshold value, and the tearing position and the tearing depth value are determined. The method effectively eliminates the interference of environmental factors on the measurement precision, can completely describe the geometrical morphology and spatial distribution characteristics of tearing, and improves the accuracy of belt tearing detection.

This application provides a display panel and its driving method. The display panel includes at least a first display zone and a second display zone. Each display zone includes multiple pixel rows, which are driven by a driving module connected to pixel circuits. The driving method includes inputting a first light emission control start signal, a first reset start signal, and a first line scan start signal to a driving module connected to the first pixel row of the first display zone; and inputting a second light emission control start signal, a second reset start signal, and a second line scan start signal that are phase-differentiated by half a frame from the first light emission control start signal, half a frame from the first reset start signal, and half a frame from the first line scan start signal to a driving module connected to the first pixel row of the second display zone. This application improves screen flicker in low-frequency scenes by controlling the staggered light emission of pixel rows, thereby increasing the actual light emission time of the display area and reducing brightness drop.

A super-resolution imaging method (100) and apparatus based on line scan. The super-resolution imaging method (100) based on line scan includes: providing multiple types of structured line excitation light, each of the multiple types of structured line excitation light having a different illumination mode (step S102); illuminating a target area in a manner of row-by-row scanning along a single first direction while switching the multiple types of structured line excitation light, such that each row in the target area is illuminated by a corresponding type of structured line excitation light among the multiple types of structured line excitation light (step S104); and detecting response light generated by the each row in the target area in response to being illuminated by the corresponding type of structured line excitation light (step S106).

The invention discloses an array substrate, an electronic paper display and a driving method, a first surface of the array substrate is provided with a first touch wire, a scanning line, a data line, a thin film transistor, a pixel electrode and a first common electrode, and the first common electrode is located on one side, close to the array substrate, of the pixel electrode and electrically connected with the first touch wire; the second surface of the array substrate is provided with a second touch wire, the extension directions of the first touch wire and the second touch wire are perpendicular to each other, and the first touch wire and the first common electrode form a touch capacitor with the second touch wire. A first touch control wire and a second touch control wire are arranged on the two opposite sides of an array substrate respectively, the first touch control wire is electrically connected with a first common electrode, and the first touch control wire and the first common electrode form a touch control capacitor with the second touch control wire, so that the first common electrode can be reused as a touch control electrode; the mask technology of a mutual capacitance touch control mode is reduced, and the manufacturing cost and the thickness of the array substrate are reduced.

A compact photoluminescence hyperspectral imaging apparatus comprises a fore-optics module and a spectrometer module. The fore-optics module has a line laser for line scanning a sample. The fore-optics module comprises optical components forming an emission light signal pathway to guide a line scan emission light signal from the sample into the spectrometer module. The spectrometer module comprises a plurality of optical components forming a folded optical light signal pathway between an emission light signal entrance and a deflection mirror. The plurality of optical components including a diffraction element and the deflection mirror are arranged in a single optical plane. The deflection mirror is arranged to deflect a diffracted light signal from the diffraction element out of the optical plane into a detector positioned above or below the optical plane.

The invention discloses a calibration method based on a flying focus x-ray imaging system, which belongs to the technical field of x-ray scanning and comprises the following steps: S1, setting up a calibration environment; s2, scanning a focus, and controlling electron deflection by a deflection system to enable the focus to move point by point in a focal plane; s3, data acquisition: acquiring a signal generated after the x-ray passes through the hole slot by a detector; s4, searching effective focuses, and automatically searching focuses aligned with the hole slots through an algorithm; and S5, data updating: refreshing a system configuration table and current parameters. According to the calibration method based on the fly-focus X-ray imaging system, the calibration work of the fly-focus imaging system is achieved through a simple process and an intermediate process, a complex subsystem independent calibration scheme depending on a precise process is replaced, the usability of products is improved, and the production, machining and maintenance cost is reduced.

This application provides a gap and surface difference measurement system, method, electronic device, and storage medium, relating to the field of machine vision technology. The system includes a first line scan profiler, a second line scan profiler, and an electronic device. The scanning surfaces of the two line scan profilers are coplanar and partially overlap, and the target gap on the object under test is located in the overlapping area of ​​their scanning surfaces. The first line scan profiler scans to obtain a first profile; the second line scan profiler scans to obtain a second profile; the electronic device acquires the first and second profiles, and based on a pre-calibrated coordinate transformation relationship between the two line scan profilers, transforms the first and second profiles to the same coordinate system and fuses them to obtain a first fused profile. Based on the first fused profile, the gap value and surface difference value of the target gap are determined. This system achieves automatic measurement of gap and surface difference, avoiding the low accuracy problem of manual measurement, thereby improving the accuracy of gap and surface difference measurement.

This invention discloses an automatic detection method and system for magnetic strip appearance defects based on image recognition, belonging to the field of image recognition technology. The method includes: acquiring geometrically disturbed images of the target magnetic strip to generate first image data; acquiring line-scan images of the target magnetic strip to generate second image data; performing image recognition based on geometric distortion on the first image data to generate a first defect detection result; performing image recognition based on spatial brightness gradient calculation on multiple consecutive frames of the second image data to generate a second defect detection result; analyzing the first and second defect detection results for defect cross-verification; and based on the defect cross-verification results, calling a pre-trained generative restoration model to perform residual detection under defect repair to generate a third defect detection result. This solves the technical problem of low accuracy in magnetic strip appearance defect detection in existing technologies, achieving the technical effect of improving the accuracy and reliability of magnetic strip appearance defect detection.

Real-time focusing in a slide-scanning system. In an embodiment, focus points are added to an initialized focus map while acquiring a plurality of image stripes of a sample on a glass slide. For each image stripe, a plurality of frames, collectively representing the image stripe, may be acquired using both an imaging line-scan camera and a tilted focusing line-scan camera. Focus points, representing positions of best focus for trusted frames, are added to the focus map. Outlying focus points are removed from the focus map. In some cases, one or more image stripes may be reacquired. Finally, the image stripes are assembled into a composite image of the sample.

A method for acquiring an extended ultrasound image according to the present invention comprises the steps of: receiving an ultrasound scan area image from a three-dimensional image capturing device by means of a computer to generate three-dimensional shape data; generating an extended image plane for obtaining an extended ultrasound image with respect to the generated three-dimensional shape data by means of the computer; generating a line scan path for acquiring a plurality of ultrasound image frames including an overlapping area for the extended image plane by means of the computer; acquiring a plurality of ultrasound image frames by moving an ultrasound probe along the generated line scan path by means of the computer; selecting an ultrasound image frame corresponding to the extended image plane; and generating an extended ultrasound image by synthesizing an overlapping portion of the selected plurality of ultrasound image frames.

The application relates to the technical field of nondestructive testing, and provides a part surface flaw detection method, system and equipment based on line scanning, which solves the problems of easy missed detection of defect detection and inability to comprehensively evaluate the expansion risk of composite defects. The method comprises the following steps: scanning the surface of a bogie by using a line scanning device, extracting temperature field distribution data and temperature gradient distribution data from the scanning line data set; generating an abnormal candidate area based on the temperature gradient distribution data; obtaining phase shift data of an eddy current signal in the abnormal candidate area, and assigning a defect classification mark to the abnormal candidate area; analyzing the spatial coordinates of the temperature gradient distribution data and the defect classification mark, and generating a reference parameter; and extracting a target defect area according to the spatial distribution weight of the reference parameter, so as to realize flaw detection of the surface of the bogie. The application improves the accuracy, reliability and efficiency of high-speed rail bogie surface defect detection, and provides strong technical support for guaranteeing the safe operation of high-speed rail.

A computer system (such as a controller) that distributes locations of access points is described. During operation, the computer system may receive, from the access points, information specifying the locations of the access points, uncertainties in the locations, and results of wireless scans. Then, the computer system may provide, to the access points, second information specifying the locations, the uncertainties in the locations, and the results of the wireless scans. Next, the computer system may receive, from the access points, third information specifying second locations of the access points and second uncertainties in the second locations, where the third information received from a given access point in the access points includes revisions to a location of the given access point and / or an uncertainty in the location. These revisions may be based at least in part on the second information.

This invention relates to a linear scanning photopolymerization 3D printer, comprising: a single convex lens disposed on one side of a laser emitter capable of generating laser light; a beam modulator disposed on one side of the single convex lens; and a biconcave lens disposed on one side of the beam modulator. The invention utilizes an electric push rod to drive a first sliding part to move a second sliding part, which in turn moves the single convex lens and the beam modulator to a designated position in a two-stage linkage adjustment. This allows the single convex lens to expand the output laser beam once when it approaches the beam modulator, and to expand the laser beam a second time when the beam modulator approaches the diameter-changing part. Within a certain travel range, the beam diameter is expanded to the maximum extent possible. This results in a relatively short printing time for large-volume printing with fewer features, improving printing efficiency and functionality.

An X-ray scanning system includes: a housing configured to be handheld; an X-ray source for scanning a target; a set of first detectors configured to be mechanically coupled to the housing and to detect resulting X-rays received from the target responsive to scanning the target; a second detector configured to be mechanically coupled to the housing; and a set of processors mechanically coupled to the housing and communicatively linked to the first detector and to the second detector so as to receive first and second signals, respectively, therefrom. The processor(s) are configured to: generate an image of the target based on the first signal; distinguish, in the second signal, a contribution of passive nuclear radiation detected at the second detector; and provide an output corresponding to the contribution of passive nuclear radiation. A related system for identifying a radioactive isotope, along with corresponding methods, are provided.

A multiplexed line scanning LiDAR system generates a line scanned image of an object based on distances to the object measured by respective points. The multiplexed line scanning LiDAR system utilizes at least one set of light sources emitted to a fiber laser element to form a line scan pattern to determine the distance and velocity of an object.

The invention relates to the technical field of metal plate processing and repairing, and discloses an integrated stress relieving-leveling-detecting method and device for a stainless steel negative plate. The method comprises the following steps: fixing a cathode plate and carrying out initial three-dimensional scanning; identifying a high-stress area based on the scanning data and planning a nonlinear screeding path; the execution head is controlled to conduct screeding operation along the path to release internal stress; and through online scanning feedback, performing compensatory repair on the substandard area to form closed-loop control. The corresponding device comprises a workbench, an integrated sensing system, a multi-axis moving integrated execution head unit and a controller. The functions of stress relief, leveling and detection are integrated under one-time clamping of the same station, automation and intelligentization of the repairing process are achieved, compared with a traditional method, the repairing efficiency and precision are remarkably improved, and the flatness of the negative plate can be stably controlled to be the high standard that the draping degree is smaller than or equal to + / -5 mm.

Systems and methods of automatically generating synthetic X-ray scan data include generating scan data corresponding to a frame holding or supporting an object, wherein the frame and hence the object is manipulated, without manual intervention, to be positioned in a plurality of orientations in three dimensional space. Subsequently, X-ray scan data corresponding to the object is isolated and extracted from the X-ray scan data corresponding to the frame, the X-ray scan data corresponding to the object is adjusted and finally each of the adjusted X-ray scan data corresponding to the object is inserted into X-ray scan data of a cargo container in order to generate a plurality of X-ray scan data of the cargo container embedded with the object.

1. Name of the product in this design: Line Scan Intelligent Code Reader. 2. Purpose of this design: For reading one-dimensional and two-dimensional barcodes. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The utility model relates to the technical field of semiconductor packaging detection equipment, in particular to a chip substrate TGV defect detection positioning device. Comprising a four-sensor cooperative positioning system, and the four-sensor cooperative positioning system comprises a second sensor which is installed on a first vertical axis module, is provided with a lens and a coaxial parallel light source, and is used for identifying a reference hole in a glass substrate and establishing a mapping relation between a platform coordinate system and a CAM coordinate system through a Halcon algorithm; the device further comprises a first line scanning sensor, a second line scanning sensor and a third line scanning sensor which are installed on the second vertical axis module, the third vertical axis module and the fourth vertical axis module respectively, the second line scanning sensor and the third line scanning sensor are respectively aligned with the upper aperture and the lower aperture of the through hole; the device can solve the problems of large positioning deviation, low reinspection efficiency and high false detection rate in the prior art.