164 results about "Spiral scanning" patented technology

The invention discloses a precision aspheric part profile measurement method. The method comprises the following steps: constructing a measurement system; point cloud data acquisition: controlling relative movement of a spectrum confocal sensor and a rotatable workpiece table in the measurement system, and acquiring three-dimensional point cloud data of the surface of the aspheric part in a spiral scanning mode or a layered annular scanning mode; performing fusion processing on the collected point cloud data, and preliminarily estimating the optical axis direction based on principal component analysis (PCA); and based on the fused point cloud data, calculating parameters such as an optical axis position and an attitude of the aspheric part, determining a curved surface equation of the optical element, calculating a transformation matrix, and performing point cloud coordinate transformation. According to the method, the spectrum confocal measurement technology is utilized, the high-precision position information aspheric part appearance measurement technology is fused, the three-dimensional appearance data of the whole surface of the aspheric part can be obtained in a non-contact and high-precision mode, and key parameters such as the optical axis of the aspheric part can be determined.

The invention relates to the technical field of transformer coil detection, and discloses a detection device for a transformer coil, which comprises a base frame, the driving mechanism is installed on the base frame and used for providing linear motion in the X direction, the Y direction and the Z direction; according to the scheme, by means of the detection mode that spiral scanning motion is combined with self-adaptive contact and laser ranging, the fatal defects that manual detection is low in efficiency, high in subjectivity and prone to making mistakes and missing detection are overcome, complete three-dimensional shape data of the surface of the coil can be rapidly and accurately obtained, and the detection accuracy is improved. According to the method, local fine defects which are difficult to discover manually can be detected, the reliability and the consistency of detection results are improved, objective and quantitative data support is provided for evaluating the winding quality, the mechanical strength and the long-term operation reliability of a transformer coil, and the manufacturing quality of a transformer and the operation safety of a power grid are guaranteed.

The invention discloses a laser processing method and device for a heterogeneous laminated component. The laser processing method comprises the following steps: determining a spiral line scanning track during laser scanning; a laser is controlled to output a laser beam, the laser beam is made to scan the upper surface of the heterogeneous laminated component from the center starting point of the spiral line along the spiral line scanning track, and the focus of the laser beam is controlled to move downwards every time scanning of a circle of spiral line is completed; in the laser scanning process, acoustic emission signals are acquired in real time through acoustic emission signal acquisition equipment, a time domain curve and / or a frequency distribution curve of the acoustic emission signals are / is generated, and whether a metal layer of the heterogeneous laminated component is exposed or not is determined according to the time domain curve and / or the frequency distribution curve; and when it is determined that the metal layer of the heterogeneous laminated component is exposed, the laser stops emitting light. According to the method, an equal-area variable-interval spiral scanning strategy is adopted, so that energy distribution of a machining area is effectively homogenized, laser energy distribution in the laser scanning process of each layer is balanced, meanwhile, when it is confirmed that the metal layer is exposed, the laser is controlled to stop light, and the metal layer can be exposed to the bottom of the blind hole in a large area while the laser energy distribution is balanced. And the exposed metal material is prevented from being removed by excessive processing and ablation.

The invention discloses a riverway dredging method which comprises the following steps: dynamically scanning a riverway along a spiral propulsion path, and obtaining riverbed topographic data and sediment thickness in real time; a three-dimensional riverbed model is established based on the riverbed topographic data, and a core dredging area, a transition maintenance area and an ecological reserve area are divided in the three-dimensional riverbed model according to the sediment thickness; the core dredging area is divided into a surface layer, a middle layer and a bottom layer in the vertical direction, and a differentiated dredging process is executed; carrying out mud-water separation treatment on the dredged material, purifying the separated water, and reinjecting the purified water into the river channel; prefabricated ecological concrete modules are laid on the surface of a dredged riverbed, diversion trenches and biological nests are formed, and the biological nests are filled with polylactic acid / straw composite fiber felts containing local submerged plant seeds. Through spiral scanning, three-dimensional modeling and intelligent partitioning, integration of monitoring, planning, construction and repairing is achieved, accurate dredging is implemented, and the dredging efficiency is improved.

The invention discloses a multi-photon optical fiber array endoscopic imaging device and method based on hollow spiral scanning, and belongs to the technical field of biological imaging. The device comprises a laser collimation and beam expansion module, a pulse chirp module, a light beam switching module, an endoscopic detection module and a fluorescence acquisition module. The light beam switching module comprises an optical switch and an optical fiber array composed of at least two low-group-velocity dispersion single-mode optical fibers. The endoscopic detection module drives the optical fiber array to execute hollow spiral scanning through the resonance driver, the track starting point is not located at the view field original point, and central dense sampling is avoided. According to the method, the optical fibers are switched through the optical switch, so that the optical fibers execute spatial non-coincident hollow spiral scanning, multi-photon signals such as fluorescence, second harmonic and fluorescence lifetime are acquired, a central hole is complemented through image reconstruction and fusion, and a complete field imaging result is obtained. Light damage of the central area is remarkably reduced, the imaging resolution uniformity is improved, the fused image is true and reliable based on physical sampling, and the system stability is high.

The invention discloses a new energy automobile motor shaft damage detection method, and relates to the technical field of mechanical part tests.The new energy automobile motor shaft damage detection system comprises an eddy current detection module, an ultrasonic detection module and a track setting module, and the eddy current detection module sweeps a motor shaft through an eddy current detection method; the estimation module is used for estimating approximate distribution of distortion cracks and fatigue cracks, the ultrasonic detection module is used for scanning axial areas of the distortion cracks and the fatigue cracks by adopting a spiral scanning method and a circumferential stepping scanning method, and the track setting module is used for setting a scanning track according to the axial distribution of the fatigue cracks and the distortion cracks. The eddy current detection module comprises an eddy current sensor, a signal processing unit and a data acquisition module, the signal processing unit is electrically connected with the eddy current sensor, and the data acquisition module is electrically connected with the signal processing unit.

The invention discloses a cable strength detection method and system, relates to the technical field of cable detection, and solves the technical problems that the metal cable detection process is not standard, the defect positioning and quantification precision is low, the contradiction between the non-metal cable detection efficiency and precision is prominent, and microscopic verification is lacked. A high-frequency arc-shaped phased array probe, a bicrystal oblique TOFD probe and an oil-based high-viscosity coupling agent are adopted, a layered focusing technology is combined, laser ultrasonic non-contact detection and ultrasonic microscope high-resolution imaging are adopted for a non-metal cable, and spiral scanning and circumferential fixed-point scanning are combined, so that the defect omission ratio in the circumferential direction is reduced; the abnormal region judgment takes a calibration test block as a reference, the misjudgment rate is reduced, the authenticity is verified through coarse scanning and locking of a core region, fine scanning and acquisition of a high-resolution image and multi-angle imaging, the defect type judgment basis is clear, and the misjudgment rate is reduced.

The embodiment of the invention discloses a long-range blood vessel imaging method and system.The method is applied to C-shaped arm imaging equipment, the C-shaped arm imaging equipment comprises a C-shaped arm, and a ray emitter and a ray detector are arranged at the two ends of the C-shaped arm respectively; the method comprises the following steps: injecting a contrast agent into a blood vessel of a target object; projection data are obtained in a spiral scanning mode through a ray emitter and a ray detector at the two ends of the C-shaped arm; and generating an angiography image based on the projection data.

The invention relates to the technical field of magnetic particle imaging, in particular to a non-magnetic field line three-dimensional magnetic particle imaging method and system based on weak gradient coding, and the method comprises the steps: driving a zero magnetic field line to carry out the spiral scanning of an imaging object; exciting a nonlinear response signal generated by magnetic particles of the imaging object; obtaining a two-dimensional image of magnetic particle concentration distribution in the imaging object; performing spatial position coding on the zero magnetic field line; obtaining target magnetic particle concentration distribution on the zero magnetic field line; and obtaining a three-dimensional image of the magnetic particle concentration distribution in the imaging object. According to the invention, the zero magnetic field line along the axial direction is constructed, and the Halbach permanent magnet array is driven to carry out visual field scanning of two-dimensional imaging. Two-dimensional imaging is carried out by adopting axial projection, then three-dimensional reconstruction is carried out under the guidance of the two-dimensional reconstruction image, and the three-dimensional reconstruction image is reconstructed by encoding the zero magnetic field line, that is, the three-dimensional image reconstruction can be completed only by scanning twice, and the imaging speed is higher compared with the traditional three-dimensional tomography.

The invention provides an ultrasonic image acquisition device and method, electronic equipment and a storage medium, and is characterized in that an imaging host is connected with an ultrasonic probe driver, the ultrasonic probe driver and an ultrasonic probe are fixed on a constant-speed traction module, and the constant-speed traction module and an ultrasonic probe outer catheter supporting structure are arranged on a platform base; one end of the connector of the ultrasonic probe is connected with the ultrasonic probe driver, the ultrasonic probe sequentially penetrates through the ultrasonic probe outer catheter supporting structure and the ultrasonic probe endoscope connector, and the ultrasonic probe is connected into the endoscope catheter. The front end of the ultrasonic probe is tightly attached to human tissue through the endoscope catheter to conduct annular section scanning processing and spiral scanning processing, and an ultrasonic image set is obtained. The ultrasonic image group can be obtained through spiral scanning processing after annular section scanning processing is completed, section reconstruction is carried out on the ultrasonic image group, and a user can know the form of a lesion from different perspectives.

The invention discloses a remote sensing image segmentation method based on double-sequence significance guidance and space gating, and belongs to the field of computer vision. According to the method, firstly, a training data set is constructed, features are extracted through a double-branch encoder, the features comprise a global sequence scanning branch and a saliency spiral scanning branch, the global sequence scanning branch adopts horizontal and vertical forward and backward scanning to reserve global layout information, and the saliency spiral scanning branch positions an initial anchor point through a saliency map to generate a bidirectional spiral path and focus key area features. In the encoder, deep fusion of the convolutional neural network and the Mama model is realized through a space gating state transition mechanism, and the Mama hidden state is guided to be updated by using space features. The decoder completes double-branch feature calibration and alignment through a multi-stage cross-scanning feature calibration module, reinforces semantic consensus and optimizes detail differences, and adopts a three-head supervision and consistency constraint strategy combined training model. According to the method, the segmentation precision and efficiency of the high-resolution remote sensing image complex ground feature are remarkably improved.

The invention discloses a D-type microcapsule probe suitable for intravascular OCT (optical coherence tomography) imaging. The probe comprises a single-mode optical fiber, a gradient refractive index optical fiber, an inclined-plane coreless optical fiber, refractive index matching glue and a D-type glass cap tube, the graded-index optical fiber is welded at one end of the single-mode optical fiber to serve as a micro-collimation / focusing lens; the bevel coreless optical fiber is welded to the other end of the gradient refractive index optical fiber and serves as a total reflection bevel; the head end of the optical fiber is arranged in the D-shaped glass cap tube, and the optical fiber and the inner wall of the D-shaped glass cap tube are filled with the refractive index matching glue; the outer tube wall of the D-shaped glass cap tube is subjected to flat-angle polishing to form a flat-angle mirror surface, and the reflection inclined plane of the coreless optical fiber is orthographically projected on the flat-angle mirror surface. According to the invention, through matching correction of the D-shaped optical capsule, transverse and radial photoetching resolutions are completely consistent in mechanical OCT spiral scanning 3D imaging, and astigmatism influence on imaging caused by the optical fiber and the cylindrical surface effect of the O-shaped optical capsule can be completely eliminated.

The invention discloses a reactor pressure vessel kingbolt ultrasonic inspection device, which comprises a positioning mechanism, a detection mechanism, a circumferential movement mechanism and an axial movement mechanism, and is characterized in that the positioning mechanism is used for positioning and clamping a kingbolt, the detection mechanism is used for detecting the kingbolt, and the axial movement mechanism is connected to the detection mechanism; the circumferential movement mechanism is connected to the positioning mechanism and the axial movement mechanism at the same time, and the circumferential movement mechanism is used for driving the axial movement mechanism to rotate in the circumferential direction. And the detection mechanism can spirally move relative to the main bolt under the combined action of the circumferential movement mechanism and the axial movement mechanism. The ultrasonic inspection device for the kingbolt of the reactor pressure vessel can perform spiral scanning on the kingbolt, and can perform comprehensive scanning on a thread area and a polish rod area of the kingbolt, so that defects such as cracks, stress corrosion, collision traces and scratches on the surface of the kingbolt can be found and displayed in time, and the inspection efficiency is greatly improved.

The invention relates to the technical field of steel roller surface treatment, and discloses a surface treatment method of a conductive steel roller for copper foil, which comprises the following steps: S1, pretreating the surface of the conductive steel roller, including ultrasonic cleaning and absolute ethyl alcohol wiping; s2, setting laser average power, pulse frequency, pulse width, light spot diameter, axial feeding speed, radial feeding step pitch and scanning overlapping rate based on the preprocessed conductive steel roller according to initial roughness and target roughness of the conductive steel roller; and S3, based on the set online laser grinding, when the steel roller rotates, a laser machining head spirally scans the surface of the steel roller at the set feeding speed and step pitch in the axial direction and the radial direction, and surface convex peaks are removed through laser. By means of the laser grinding and real-time feedback control technology, accurate adjustment of the surface roughness and shape of the steel roller is achieved, the machining efficiency and the consistency of the surface quality are improved, and high precision and uniformity are ensured.

The invention discloses an SLM (selective laser melting) forming method of an In718 high-temperature alloy material, which comprises the following steps: selecting 15-35 mu m spherical powder, and carrying out ultrasonic screening, plasma activation and 50-100nm aluminum oxide coating modification to improve wettability and oxidation resistance; in an inert gas cabin, a platform is preheated at the temperature of 100-150 DEG C, and a pre-tightening layer with the density larger than or equal to 98% is formed through vibration auxiliary powder laying; a pulse fiber laser is adopted to dynamically modulate parameters, a thin-wall area and a solid area are matched with a spiral scanning path, and the cooling rate of a molten pool is reduced by 30%-50%; a molten pool is monitored through dual-wavelength infrared temperature measurement and a high-speed CCD, and laser frequency compensation and argon blowing stable convection are triggered; constructing a three-layer temperature gradient; by means of the method, the density and the high-temperature performance of the formed part are improved, and the method is suitable for manufacturing of aerospace complex structural parts.

The invention relates to a battery finished product defect detection method, system and terminal, and belongs to the technical field of battery detection.The battery finished product defect detection method comprises the steps that laser interference scanning is conducted along the side angle of a top seal of a finished product battery pack, and the scanning mode is spiral scanning; acquiring scanning data in a spiral scanning process, wherein the scanning data comprises stripe spacing and contrast; judging whether the fringe spacing is not less than 1.2 times of a fringe spacing normal value or not and whether the contrast is lower than a contrast normal value or not; and if yes, marking the scanning area corresponding to the current stripe spacing as a preliminary liquid leakage area. The method has the beneficial effect of improving the safety of the finished battery after leaving the factory.

The invention relates to the technical field of laser radars, and discloses a laser radar beam scanning path optimization and energy efficiency management method based on an FPGA, and the method comprises the following steps: S1, collecting the point cloud data and obstacle distribution information of a target region in real time through an environment sensing module; s2, generating a dynamic scanning path based on space partition, and generating a self-adaptive spiral scanning path for avoiding obstacles; s3, executing multi-parameter collaborative energy efficiency adjustment, and dynamically matching the laser transmitting power, the receiver gain and the MEMS driving voltage; and S4, synchronously outputting the optimized scanning path and the energy efficiency instruction to a laser driving circuit and a light beam deflection controller through a hierarchical scheduling module of the FPGA. A detection area is divided into priority grids through an FPGA, a self-adaptive spiral scanning path is generated, a hardware-level sudden obstacle avoidance algorithm is utilized, the response time is shortened to be smaller than or equal to 5 ms, and the integrity of point cloud data is ensured.

The invention relates to the technical field of medical image processing, in particular to an intestinal polyp segmentation method and system based on a spiral scanning state space model, and the method comprises the following steps: S1, obtaining and preprocessing an image; s2, performing multi-scale context feature coding; s3, self-adaptive frequency domain feature enhancement is carried out; s4, performing decoding and segmentation prediction; and S5, carrying out threshold processing to generate a binary segmentation mask image. According to the method, the boundary integrity of an irregular target is kept through a dynamic multi-focus spiral scanning strategy, and the adaptive frequency domain filtering module is introduced to enhance the discriminability of key features, so that the segmentation precision and robustness in complex medical image tasks such as intestinal polyp and the like are comprehensively improved.

The invention discloses an X-ray tomography in-situ testing device and method suitable for a seawater high-pressure environment. The X-ray tomography in-situ testing device comprises an X-ray source, a collimator, a flat panel detector, a seawater pressure cabin and a seawater pressure control device. During detection, the X-ray source is started, the sample is started to move spirally, the flat panel detector collects projection data, then a cross-sectional image is reconstructed through an existing method, and the X-ray tomography in-situ test of the sample in the seawater high-pressure environment is achieved. In order to solve the problems that a seawater in-situ detection device in the prior art is insufficient in penetrating power, low in resolution ratio, limited in sample movement freedom degree and poor in high-pressure environment adaptability, the invention discloses an X-ray tomography device and method, and in-situ dynamic imaging can be carried out on a large component in a seawater high-pressure environment. In-situ observation of micron-sized damage and defects (100-200 microns) is realized, and meanwhile, an imaging view field is expanded through a multi-degree-of-freedom sample table and a spiral scanning method, so that the detection efficiency is improved.

The invention belongs to the technical field of wafer automatic detection equipment, and provides a wafer detection point spiral scanning motion device and method in order to solve the problems that linear scanning detection coverage of an existing wafer is uneven, a detection blind area is likely to be generated, and repeated scanning is needed to affect the detection efficiency. The equidistant spiral track movement of the wafer in the plane is completed through the rotating platform and the two transfer platforms, the optical detection module collects spectral information at a fixed position at a preset frequency in the moving process, the whole surface of the wafer is uniformly covered from the center to the edge, no detection blind area is ensured, overlapping or omission in the detection process is effectively reduced, and the detection efficiency is improved. The linear speed is kept at a constant speed, so that re-collection and missing collection of collection points are avoided, point spiral scanning detection in the radial plane of the wafer is completed, the detection device does not need to be started and stopped frequently, the detection speed is adjustable, and the detection efficiency is high.

The invention relates to a high-rise building heat insulation layer hollowing detection method and system based on an unmanned aerial vehicle. The method comprises the following steps: converting point cloud data of a building into a three-dimensional network model by using a Poisson reconstruction algorithm, and generating a spiral scanning unmanned aerial vehicle route; the unmanned aerial vehicle flies according to the route of the unmanned aerial vehicle, collects flight attitude data and reflection echo signals of the laser radar, and suppresses flight jitter interference through an anti-jitter signal processing algorithm; performing time-frequency domain analysis on the radar signals after noise reduction, extracting double-interface reflection coefficient features, inputting the double-interface reflection coefficient features into a support vector machine classifier to identify a hollowing region, and calculating hollowing position coordinates; and generating a three-dimensional thermal image of the building, and outputting a hollowing detection report. Anti-interference processing is carried out through an anti-jitter signal processing algorithm, so that hollowing feature misjudgment caused by jitter can be avoided; the whole process is automatic, and labor time consumption can be saved; automatic, precise and quantitative evaluation of hollowing detection is realized.

The invention discloses an aircraft assembly drilling method and device based on a high-energy laser beam, and the method comprises the steps: adjusting the current posture of equipment through a normal alignment module in an end effector of the equipment, and enabling the irradiation direction of the high-energy laser beam to be the normal direction of a product; the product structure of the current hole forming position is locally pressed through a pressure foot module in an end effector of the hole forming equipment; a high-energy laser beam coupling module in an end effector of the drilling equipment is used for carrying out beveling annular spiral scanning on the product until a conical blind hole molded surface is formed; and the high-energy laser beam coupling module in the end effector of the hole making equipment is adjusted again to be the normal posture of the hole making position, the posture is kept, the center of the conical blind hole serves as the circle center, and circular cutting straight hole machining is conducted till a complete assembly through hole is formed. The problem that the machining precision is low due to local deformation of a weak-rigidity product can be solved, meanwhile, the link of disassembly, finish machining and secondary racking in the assembling and hole forming procedure can be omitted, and the comprehensive hole forming efficiency is improved.

The application belongs to the technical field of laser precision machining, and particularly relates to a laser drilling method for heterogeneous composite materials based on partition parameter regulation. f In view of the problems that a multilayer heterogeneous structure such as a SiC / SiC composite material is prone to hole wall cracking, interface delamination and re-solidification blockage in through-hole machining, the workpiece is divided into a coating area and a matrix area, the scanning speed, the focal point increment and the scanning number matching the material characteristics are selected respectively, and linear variable pitch spiral scanning combined with workpiece self-rotation is adopted to realize the relative uniform distribution of the energy density in the hole. On the premise of ensuring the integrity of the coating / matrix interface, the method can effectively reduce the hole taper and obtain a high-quality through-hole with smooth hole wall and significantly reduced defects.

This disclosure provides a method, apparatus, and storage medium for on-orbit optical axis calibration of a spectrometer, relating to the field of astrophysical detector calibration technology. The method includes: performing a helical scan of the celestial body under test; during the scan, continuously acquiring the imaging position of the centroid of the celestial body on the imaging target surface of the imaging device, and acquiring the thermal radiation energy of its pointing position at a first angle based on a preset acquisition frequency using the spectrometer; inverting the continuously acquired imaging positions onto the first target surface, and mapping the acquired thermal radiation energy to the corresponding position on the first target surface according to the acquisition time, generating first thermal radiation data; and using the position of the point with the highest thermal radiation energy in the first thermal radiation data on the first target surface as the optical axis pointing position of the spectrometer at the first angle. This disclosure achieves joint observation by synchronously controlling the imaging device and spectrometer of the astrophysical detector, and determines the true pointing position of the spectrometer's optical axis through the observation results, which is simple to operate and has high accuracy.

The invention provides a lightweight semantic segmentation method and system for a remote sensing image of an urban scene, and relates to the technical field of semantic segmentation, and the method comprises the steps: carrying out the multi-scale transformation of the remote sensing image of the urban scene, carrying out the semantic feature extraction, obtaining a first semantic feature map under each reduced scale, adjusting the first semantic feature map, and obtaining a second semantic feature map under each reduced scale; using a second semantic feature map; performing forward, snake-direction and spiral scanning fusion operation on the second semantic feature map to obtain a third semantic feature map, and fusing the third semantic feature map with the third semantic feature map of the previous scale to obtain a fused semantic feature map; splicing the third semantic feature map and the up-sampling result of the fused semantic feature map of the previous reduced scale according to the channel dimension, and then performing two convolution operations and fusing; obtaining a fused feature image corresponding to a reduced scale; and taking an up-sampling result of the last scaled-down fusion feature image as a semantic segmentation result image.

The invention relates to a rapid scanning type laser active detection system based on laser angle on-line control, and the system comprises an adjustable beam expanding optical unit which can continuously adjust the beam expanding multiplying power on line through position closed-loop control; the scanning detection execution unit can perform large-range search and can compensate image motion caused by carrier motion and continuous scanning, and a variable-speed spiral scanning mode with high probability of finding a target is adopted as a scanning mode; the off-axis beam expanding unit is used for further compressing a laser divergence angle; the photoelectric imaging system can splice scanned images on line, so that the scanning process is clearer and more visual; and the time sequence control unit assists in image motion compensation control. The scanning process can be rapidly completed, imaging is clear in the scanning process, and the scanning result can be directly presented.

A CT device capable of easily and appropriately determining the start and end positions of imaging in helical scanning imaging is provided. [Solution] The CT apparatus is a helical scan type CT apparatus that continuously images an object being inspected while moving and rotating it, and includes an examination table 1 on which the object being inspected is placed and which moves and rotates the object being inspected, a radiation source 2 that irradiates the object being inspected with a radiation beam, a detector 3 that is provided opposite the radiation source 2 with the object being sandwiched between them, and an examination table position calculation unit 74 that calculates the position of the examination table 1 during imaging. The examination table position calculation unit 74 calculates a reconstruction start position Zs and a reconstruction end position Ze of the object being inspected, and calculates a data acquisition start position Zdas and a data acquisition end position Zdae based on the reconstruction start position Zs and the reconstruction end position Ze.

The invention discloses a method and system for treating hypertension through carotid artery blood vessel regulation and control based on low-frequency ultrasound and near-infrared light cooperation. The system consists of an integrated control system, a movable treatment head and a driving mechanism, wherein the treatment head adopts a cooperative structure of a circular low-frequency ultrasonic transducer (800kHz-2MHz) and a near-infrared weak laser transmitter (600-1000nm) surrounding the treatment head, and is driven by a planetary gear to realize spiral scanning along a neck blood vessel. During treatment, the common carotid artery and the carotid sinus are firstly scanned and positioned, the scanning path is calculated according to the blood vessel trend, ultrasonic waves (0.5-3 W / cm) and near-infrared light (50-200 mW / cm) are synchronously applied, single treatment lasts for 15-20 minutes, and the treatment time is more than or equal to 3 times per week.

The present invention relates to the technical field of digital X-ray imaging methods, and discloses an imaging device using slit scanning, comprising: a transmitting end for collimating X-rays into slit X-rays, continuously transmitting slit X-rays to an object to be imaged, and allowing the object to be imaged to be completely captured by the slit X-rays in a linear manner; and a receiving end for automatically activating a slit region of interest corresponding to the slit X-ray emission direction on the receiving end after each transmitted slit X-ray passes through the object to be imaged, acquiring the attenuated slit X-rays, converting them into slit images with the same range as the slit X-rays for storage, and splicing the slit images after they are completely captured. By collimating X-rays using slit scanning, the magnification effect of point light source imaging is avoided, and the device can be used to acquire images of a patient in true proportion. Furthermore, the radiation dose received is much lower than that of spiral scanning, being at the level of ordinary radiation.

The invention provides a railway line environment identification method and system based on artificial intelligence. According to the method, the laser point cloud, the track inspection vehicle state parameters and the millimeter wave radar data of the railway ballast area are synchronously collected, and the enhanced point cloud with the physical attribute is fused and constructed. Linear scanning laser and millimeter wave radar at the bottom of a rail inspection vehicle are used for spiral scanning and penetrating scanning, and a three-dimensional data matrix fusing the surface appearance and the internal dielectric characteristics is generated. The neural network analyzes the railway ballast contact surface curvature and gap distribution of the matrix, and enhances the weight of the loose area through space-time attention. And a model is generated based on adversarial training to complement the occlusion area, and a complete virtual point cloud is output. And finally, quantitatively analyzing the virtual point cloud and related characteristics, and outputting the railway ballast compactness and the coordinate range of the hardened area as key identification results. Through multi-source data fusion, deep learning and point cloud generation technologies, accurate, dynamic and non-contact quantitative evaluation of the railway ballast compactness and the hardened area is realized.