47results about How to "Fast scanning" patented technology

The invention provides a wafer three-dimensional shape detection method based on sparse sampling, and the method comprises the steps: 1, carrying out the longitudinal scanning of each pixel point of a to-be-detected wafer based on a white light interference measurement method, and obtaining an interference signal # imgabs0 # in a longitudinal scanning range at a certain sampling step length; 2, during longitudinal scanning, a sparse sampling mode of equal-phase interval sampling is adopted, the sampling interval used by scanning sampling is n more than the full sampling interval, and sparse sampling interference signals are obtained; and 3, processing a sparse sampling interference signal obtained from the surface of the wafer to be measured by using an improved gravity center method, and reconstructing the three-dimensional shape of the wafer.

The invention relates to the technical field of computed tomography, in particular to a CT imaging system and method based on a distributed micro-focus X-ray source, and the system comprises the distributed X-ray source provided with a plurality of micro-focuses, a detector, a scanning carrier, a control module and a data processing module. In the scanning process, the distributed X-ray source and the detector rotate around the rotation center relative to the object to be detected at the same time, the multiple small and micro focuses are sequentially subjected to beam outgoing according to the beam outgoing strategy so as to disperse heat dissipation, the peak power of the small and micro focus radiation source can be effectively improved, and the time needed by single CT scanning is shortened. Besides, by designing a beam outgoing strategy of the distributed X-ray source, sampling distribution of a plurality of small microfocuses can be optimized, sub-pixel-level image reconstruction is realized, and the spatial resolution is further improved. According to the system and the method, ultrafast high-definition CT imaging can be realized, and the problem that a traditional single-focus X-ray CT system is difficult to consider high spatial resolution and high time resolution at the same time is solved.

A cyclotron particle therapy center provided with a linear acceleration type range shifter of a switchable therapy system comprises a particle cyclotron (1), an energy selection system (2) and the linear acceleration type range shifter (3), wherein the energy selection system (2) and the linear acceleration type range shifter (3) are sequentially connected with the particle cyclotron (1) in series, and a multi-angle deflection magnet (4) receives a particle beam emitted by the linear acceleration type range shifter (3). The linear acceleration type measuring range shifter (3) is in butt joint with M beam transport sections (5) after deflection, M is larger than 1, the M beam transport sections (5) are in butt joint with a two-way scanning treatment system (6), the use of the linear acceleration type measuring range shifter (3) greatly improves the tumor depth scanning speed, the volume recoating scanning method is more efficient, the use method of the switchable treatment system achieves multiple purposes, and the application range of the linear acceleration type measuring range shifter (3) is wider than the application range of the linear acceleration type measuring range shifter (3), so that the application range of the linear acceleration type measuring range shifter (3) is wider than the application range of the linear acceleration type measuring range shifter (3). The path of a beam transport section is shortened, and the use number of electromagnetic components is reduced.

The invention provides a 3D point cloud generation, identification and segmentation method, a device comprises a laser, a camera, a motor and a controller, the laser is assembled on the motor, and the controller can control the motor to rotate according to a preset speed so as to drive the laser to rotate and can obtain and store the rotation angle of the motor; the laser is controlled to emit a beam of planar laser; the controller can control the camera to take photos according to different parameters and store photos, and the device belongs to a point cloud generation device of a monocular structured light method, is suitable for point cloud generation in a small range and a short distance, and is high in precision; according to the 3D point cloud generation, identification and segmentation method, the three-dimensional point cloud and the two-dimensional image of the to-be-measured object can be synchronously acquired, the point cloud corresponds to the image, and the identification and segmentation of the three-dimensional point cloud can be realized by identifying and segmenting the two-dimensional image, so that the complexity of 3D point cloud identification and segmentation is remarkably reduced, and the efficiency is improved.

The invention relates to the field of optical detection, in particular to an interference confocal measurement system based on two-dimensional dispersion and a measurement method thereof. White light generated by a light source is collimated into parallel light through a first collimating lens, is shaped into rectangular light through a rectangular diaphragm, and is shaped into a linear light beam through a column focusing lens and a rectangular slit; the light is divided into reference light and object light through a beam splitter, the reference light is achromatic through a first achromatic objective lens, then enters a reference plane mirror and is reflected back to the beam splitter by the reference plane mirror, the object light is focused to positions of different depths of an object to be measured after being dispersed through a dispersion lens and is reflected back to the beam splitter by the object to be measured, and the two beams of light are reconverged in the beam splitter. And after being collimated by the second collimating lens, dispersed by the dispersion grating and achromatic by the second achromatic objective lens in sequence, the light is focused on the target surface of the spectrograph for spectrum and interference analysis. According to the invention, line scanning, dispersion and interference measurement are combined, so that the measurement precision can be greatly improved.

The invention discloses a vehicle-mounted GNSS (Global Navigation Satellite System) multi-interference source monitoring and direction-finding device and a monitoring and direction-finding method, the device comprises a monitoring and direction-finding antenna and a monitoring and direction-finding host, the monitoring and direction-finding antenna comprises an antenna unit, a switch matrix, an electronic compass and an antenna controller, the antenna unit is electrically connected with the switch matrix, and the switch matrix is electrically connected with the electronic compass. The switch matrix and the electronic compass are electrically connected with the antenna controller respectively; the monitoring direction-finding host comprises a radio frequency receiving module, a signal processing module, a main control module and a power supply module. The monitoring and direction finding device disclosed by the invention is high in maneuverability, and can be carried on a vehicle platform to realize rapid monitoring and troubleshooting of interference sources in a certain area; the monitoring range is wide, satellite navigation interference signals in the vehicle driving range can be monitored in real time, and the detection range is wider than that of traditional handheld interference source monitoring and direction finding equipment.

The invention provides an underwater laser terrain matching navigation method and system for deep sea, is applied to an underwater vehicle, and belongs to the field of deep sea detection. The method comprises the following steps: acquiring pose information, speed information, depth information, course information and a current topographic data map of a submarine topographic database and an underwater vehicle; carrying out preprocessing and track splicing on the current topographic data graph; matching and registering the processed topographic data map and a submarine topographic database through an iterative nearest point algorithm; and correcting accumulated pose error information of the underwater vehicle by using the rotation matrix and the translation vector obtained by matching and registering. The submarine topography data map is obtained through the underwater laser detector, and the underwater laser topography matching navigation method for deep sea is combined, so that the matching precision of the submarine topography matching navigation system is effectively improved, and the requirement of reliable high-precision navigation positioning required by long-time underwater operation of the underwater vehicle is met.

The embodiment of the invention discloses a three-dimensional modeling method and device based on a panoramic vision laser scanner, and the method comprises the steps: carrying out the comprehensive scanning of a target scene based on the panoramic vision laser scanner according to a preset scanning path, so as to collect scene data, wherein the scene data comprises three-dimensional coordinate information, RGB color information, and texture information; preprocessing the scene data, generating point cloud data, and generating ellipsoid distribution data of a three-dimensional space based on the point cloud data; and establishing a three-dimensional model of the target scene based on the ellipsoid distribution data. According to the embodiment, the defects of a traditional method in the aspects of visual effect, precision and automation degree are overcome, a brand new solution is provided for rapid modeling of a large-scale scene with lower cost and higher efficiency, the centimeter-level precision standard is achieved, and a user can experience immersive feeling in a virtual space. Meanwhile, the high-precision point cloud data can also be widely applied to a plurality of fields such as topographic surveying and mapping, geological survey and forestry survey.

The invention discloses a contact type image acquisition device and an acquisition processing method, and belongs to the field of image acquisition devices and algorithms. The method comprises the steps that a displacement sensor detects the displacement in the x direction and the displacement in the y direction, and when the displacement reaches the scanning line width, a main control chip sends a starting signal to a time sequence controller; when an image time sequence is generated, data receiving and conversion are carried out, and an inertial measurement unit collects coordinate and attitude data; processing the image data, and displaying a processing result on a screen in real time; s2, continuously scanning, and repeatedly updating and processing the process in S1 in the scanning process; the image is displayed, subsequent processing is carried out, and the subsequent processing comprises printing, storing, editing and deleting; and image acquisition and processing are completed. According to the method and the device, the scanned image can be checked in real time, the scanning speed is high, the efficiency is remarkably improved, the scanning plane is not limited by the width of an image acquisition sensor, any plane image can be acquired in real time and displayed in real time, and the image scanning result can be observed conveniently.

This invention provides a low-cost, bimodal particle size distribution titanium-based powder for additive manufacturing, titanium-based parts, and a method for preparing the same. The method utilizes two different medium particle sizes D... 50 Using near-spherical titanium-based powder as raw material, a near-spherical bimodal particle size distribution titanium-based powder with good uniformity is obtained by wet mixing of suspension and rotary degreasing in a furnace. Various near-spherical bimodal particle size distribution titanium-based powders can also be prepared. The difference between these powders lies in the different particle size ratios and mass ratios of the two raw material powders used. The bulk density and flowability of each bimodal powder are tested to determine the range of particle size ratios and mass ratios of the two powders in near-spherical bimodal particle size distribution powders with high bulk density and flowability. This guides the preparation of high-quality near-spherical bimodal particle size distribution titanium-based powders for additive manufacturing. Ultimately, additive manufacturing technology is used to prepare high-performance, low-cost titanium-based parts to meet the stringent performance requirements of titanium components in high-end fields such as aerospace.

This invention relates to the field of microscopy application technology, and in particular to a SICM scanning control method and related device based on feedback quantization. The method acquires the test height, initial scanning speed, initial safe height of the test point, first speed adjustment start point, and second speed adjustment start point of the test point. It controls the scanning probe to descend from the initial safe height of the test point to the first speed adjustment start point at the initial scanning speed, intervenes with first dynamic speed adjustment, continues to descend to the second speed adjustment start point, intervenes with second dynamic speed adjustment, and continues descending until the probe detects a sudden change in ion current and stops descending. This control method solves the problems of low scanning time resolution and poor safety in existing scanning ion conductivity microscopes by setting an initial speed adjustment point that dynamically adjusts the speed according to the probe's descent position.

This invention relates to the field of chip inspection technology, and more particularly to a chip non-destructive testing system based on embedded current scanning. The system includes a current scanning module, an information acquisition module, a data analysis module, an abnormal scanning region generation module, and a scanning path generation module. Instead of simply performing a higher-density secondary scan of the entire chip, this invention intelligently filters out abnormal scanning regions requiring special attention based on the initial scan results and calculates their scanning priority. This allows valuable inspection time and computing resources to be concentrated on the most suspicious and severe areas, avoiding unnecessary repeated scanning in normal areas. The system dynamically selects the optimal scanning path based on the regularity of the region shape; for example, parallel lines are used for regular regions, and radial lines are used for irregular regions. This makes the scanning path more closely match the geometric features of the defect, obtaining a more complete region characterization with fewer scanning points, resulting in higher path planning efficiency.

This invention discloses a multifunctional analyzer combining CL-LIBS-LA-ICP-MS, comprising a laser optical path module, an electronic excitation system, a spectral detection module, a sample chamber, and a mass spectrometry detection module. The laser optical path module includes a laser source, a beam adjustment system, a scanning galvanometer, and a coaxial microscopic observation system. The spectral detection module includes a light signal collection end, an echelle grating spectrometer, a gated camera, and a timing control module. Another aspect of this invention discloses an analytical method, comprising setting the environment to vacuum and performing CL imaging scanning; selecting a LIBS test area based on the CL imaging scan image and performing LIBS scanning; selecting a third test area based on the LIBS scan results, filling the sample chamber with carrier gas, and performing laser ablation mass spectrometry detection. This invention eliminates the positioning error caused by sample transfer between multiple instruments during combined techniques, provides more comprehensive information on the structure and composition of the sample, and further improves the detection efficiency of the entire method through two screening test ranges.

The utility model discloses an exposure scanning shaft drive mechanism, exposure scanning shaft drive mechanism adopts the mode of linear motor module drive, eliminates mechanical transmission gap, improves the scanning speed of exposure scanning shaft, improves the positioning accuracy of vertical exposure equipment, satisfies the high accuracy requirement of exposure machine field. The counterweight of the present application is connected with the mounting base, and the counterweight offsets the weight of the lens module, which can reduce the driving force when the linear motor module is driven, so that the exposure scanning shaft drive mechanism is suitable for heavy load occasions. At the same time, the problem of the lens module falling due to its own weight after the linear motor module is powered off can be avoided, and the adaptability of the exposure scanning shaft drive mechanism is improved. In addition, the exposure scanning shaft drive mechanism of the present application has simple and reliable structure, low noise and low wear, which greatly reduces the maintenance cost in the later period.

The invention relates to the technical field of motor production, in particular to a flat wire motor stator hairpin wire paint removing device and a paint removing method. Comprising a laser, a conduction optical fiber, an optical isolator output head, a beam expander, a scanning range adjusting structure, a scanning speed adjusting structure, a focusing lens and a dust collection structure. The laser is used for emitting laser beams; one end of the conductive fiber is connected with the laser; the output head of the optical isolator is connected with the other end of the conduction optical fiber; the scanning range adjusting structure is located on a light path of the laser beam led out by the optical isolator output head; the scanning speed adjusting structure is used for adjusting the scanning speed of the laser beam in a certain direction; the focusing lens is located on a light path of the laser beam reflected by the scanning speed adjusting structure; the dust collection structure is located between the focusing lens and the hairpin line to be depainted. The paint removing device is simple in structure and convenient to operate, the paint removing efficiency of the hairpin wire of the stator of the flat wire motor can be greatly improved, and the paint removing quality and effect are improved.

The present invention relates to the technical field of medical devices, and in particular to a laser measuring device for measuring human body morphology, comprising a telescopic rod, an annular guide rail, a laser measuring assembly and a laser scanning device, wherein the telescopic rod can adjust its own height according to the height of a target to be measured, so as to satisfy the laser scanning device for scanning the target to be measured; a data analysis module obtains a two-dimensional image according to an initial morphological three-dimensional image, determines an actual two-dimensional image complexity value according to the area of ​​the two-dimensional image and the number of feature points, determines a secondary refinement scanning difficulty level according to the actual complexity value of the two-dimensional image, and determines an actual secondary refinement scanning speed according to the secondary refinement scanning difficulty level; and obtains a target secondary refinement scanning speed according to a comparison result of a coincidence value of the initial morphological three-dimensional image and a coincidence value of a standard morphological three-dimensional image. The present invention performs a refinement scanning on a target to be measured by adjusting the scanning speed of a scanning device, thereby improving scanning efficiency and increasing scanning clarity.

The invention discloses a virus feature code parallel detection system and method based on extensible precision chaos hash, and belongs to the field of computer file system safety and parallel calculation. The method comprises the following steps: establishing a virus feature code database by adopting an extensible precision chaos Hash process; the main service program realizes virus feature code database configuration; starting a verification process of the virus feature code database in the slave service program; the receiving module is used for receiving file virus infection judgment results; and the plurality of slave service programs execute computer virus detection in parallel, the slave service programs match and identify the feature codes in the to-be-detected file with the virus feature codes in the virus feature code database, and whether the file is infected with viruses is judged according to the matching and identifying result. According to the method, the computer file system can be protected, damage of computer viruses to the file system is resisted, a safer computer defense system is constructed, and then the purpose of protecting the file system is achieved.

The invention relates to a laser processing apparatus and a control method thereof. The laser processing device comprises a laser light source used for emitting laser; the focusing field lens is used for focusing the laser to the surface of the target material; the first deflecting mirror is arranged adjacent to the laser light source and is used for switching the laser between a first light path and a second light path; the double-sided scanning mirror is arranged between the first deflecting mirror and the field lens, a first reflecting surface in the double-sided scanning mirror is located in the first light path, and a second reflecting surface in the double-sided scanning mirror is located in the second light path; the rotating motor is connected with the double-sided scanning mirror and is used for driving the double-sided scanning mirror to rotate unidirectionally, so that the laser can scan the surface of the target material; and in one rotation period of the double-sided scanning mirror, the laser can be emitted towards the focusing field lens from the first light path and the second light path alternately. In this way, the laser processing device can improve the cleaning efficiency in the laser cleaning process.

A high-resolution flash laser radar imaging system includes: a modulated light generator, an optical transmitting mechanism, an optical receiving mechanism and a signal acquisition processor, wherein: the laser generator emits laser light, which generates a periodic laser pulse train after passing through the modulator, and the laser pulse is converted into a space laser pulse by the optical transmitting mechanism and emitted to the free space, and the laser pulse reflected by the target passes through the optical receiving mechanism to generate an electrical signal, and the signal is processed by the signal acquisition processor. The present invention is based on the direct time of flight (dTOF) of a single-photon detection array, adopts a linear wavelength scanning laser, and uses two virtual phase arrays (VIPA) to perform two-dimensional light splitting of laser pulses of different wavelengths to achieve an increase in imaging pixels.

The application provides a laser galvanometer scanning device and a laser printing device, and relates to the technical field of laser processing. The laser galvanometer scanning device comprises a lens group and a plurality of laser units, and the lens group is located on the light emitting side of the laser units; the plurality of laser units are used for respectively emitting light beams to the lens group so that the light beams are converged by the lens group to form a plurality of converged light beams. The laser galvanometer scanning device and the laser printing device are used to solve the problem of low scanning speed of the laser galvanometer scanning device.

The invention belongs to the related technical field of laser processing, and discloses a track-adjustable scanning system and a track-adjustable scanning method.In the system, a multi-point generation unit and a rotary scanning unit are used for producing N light beams and synchronously performing circular track scanning; the track changing unit is used for synchronously increasing the emergent angles of the N annularly scanned light beams, the emergent angles increased by each laser beam at the same moment are the same, and the emergent angles increased at different moments are adjustable; and then through focusing, different light beams correspond to different focusing surfaces to form N focusing light spots which act on the processed object and synchronously scan N target trajectories, and the N target trajectories are oval trajectories or circular trajectories. By means of the system, the scanning track can be flexibly adjusted, and different requirements of refractive surgery can be met.

The invention belongs to the related technical field of imaging technology, and discloses a multi-view-angle-based photoacoustic microscopic imaging system, which comprises a two-dimensional scanning module, a view angle selection module, a signal detection module and a three-dimensional reconstruction module, and is characterized in that the two-dimensional scanning module enables a light beam to carry out multiple XY plane two-dimensional scanning on a sample; the visual angle selection module adjusts the visual angle of each two-dimensional scanning to enable the angle of each two-dimensional scanning to be different, the visual angle is the direction in which the light beam enters the sample, and the visual angle of each two-dimensional scanning is perpendicular to the signal detection direction; the signal detection module is located on the side face of the sample and receives ultrasonic signals in the detection direction, the detection direction is parallel to the XY plane, and the ultrasonic signals are ultrasonic signals generated by the sample under light beam excitation; and the three-dimensional reconstruction module performs three-dimensional reconstruction according to the ultrasonic signals at different visual angles to obtain a three-dimensional body structure of the sample. According to the system, the axial resolution of photoacoustic microscopy can be improved in a simpler mode, and scanning and three-dimensional reconstruction can be rapidly completed.

The invention discloses an integrated optical waveguide phased array scanning acceleration method based on a polarization multiplexing technology, and the method employs an input waveguide, a polarization independent beam splitter network, a first connection waveguide, a polarization independent beam splitter group, a second connection waveguide, a phase shift assembly, a third connection waveguide, and a transmitting assembly. Comprising the following steps: S1, a polarization multiplexing optical signal enters a polarization independent beam splitter network through an input waveguide, and the polarization independent beam splitter network equally divides the polarization multiplexing optical signal into N paths; the integrated optical waveguide phased array scanning adopts the polarization multiplexing technology, two orthogonal polarized light can be incident at the same time, the phased array can output two wave beams at the same time, the scanning range of one wave beam is right in the middle, the scanning range of the other wave beam is at the edge, the scanning ranges of the two wave beams are not overlapped, only half of the angle range needs to be scanned, and the scanning efficiency is greatly improved. Therefore, the whole scanning range can be covered, the phased array scanning speed is doubled, and the forming time of a laser radar point cloud picture can be shortened.

The present invention relates to the field of CT scanning equipment manufacturing, and discloses a CT scanning imaging system, which mainly includes a carrying platform, a scanning device, a data processing center and a control center. The scanning device is arranged on the periphery of the carrying platform through a rotating device, and the scanning device includes two or more scanning units, and the scanning unit includes a ray source and a detector plate arranged corresponding to the ray source, and the detector plate includes one or more plate units; under the control of the control center, the rotating device drives the scanning device to move around the object to be scanned placed on the carrying platform, and the scanning device collects the scanning data of the object to be scanned and outputs the data signal to the data processing center, and generates a multi-angle two-dimensional image and establishes a three-dimensional tomographic image after being processed by the data processing center. The present invention can obtain a larger scanning field of view and a faster scanning speed, has a compact structure, and has high working efficiency and accuracy.

The application provides a method and device for determining an FHV scanning track, the method comprising: determining a scanning center and a scanning space size when a target component is scanned by a target detector according to coarse scanning data of the target component; setting a number of scanning layers and a number of sampling points of each scanning layer according to the determined scanning center and scanning space size; wherein the number of sampling points in a scanning layer close to the scanning center is more than the number of sampling points in a scanning layer far from the scanning center; for each scanning layer, planning an initial single-layer scanning track of the scanning layer according to a scanning range of the scanning layer in the scanning space size, device parameters of the target detector, and preset scanning movement related parameters; setting the initial single-layer scanning track according to the number of sampling points in the scanning layer in a preset setting mode to obtain a target single-layer scanning track; and splicing all target single-layer scanning tracks in sequence to obtain an FHV scanning track corresponding to the target component. In this way, the application sets the number of scanning points of different scanning layers to be not necessarily the same, thereby ensuring the accuracy of alignment position calculation and improving the scanning speed.

This invention proposes a control method, control circuit, and communication device for a phased array antenna. The control method first controls multiple antenna groups to radiate beams with a target main lobe direction sequentially according to a preset timing sequence. Each antenna group operates sequentially in a first time period and a second time period. In two adjacent antenna groups radiating beams, the second time period of the preceding antenna group coincides with the first time period of the following antenna group. During the first time period, a bias voltage is output to each liquid crystal antenna in the antenna group to bias the liquid crystal in the liquid crystal phase-shifting unit within the antenna group. During the second time period, a first radio frequency signal is output to the waveguide of the antenna group to form a beam with the target main lobe direction. Each liquid crystal antenna in the phased array antenna only requires one liquid crystal phase-shifting unit, simplifying the structure and design cost of the phased array antenna. Simultaneously, adjacent radiating antenna groups can be time-divisionally biased and radiated, improving the scanning speed of the phased array antenna.

The invention provides an image scanning method and device, electronic equipment and a storage medium, correction configuration parameters are obtained before scanning processing, the correction configuration parameters are stored in a programmable logic gate array chip, an original manuscript image is scanned through an image sensor, and after image scanning data are obtained, the original manuscript image is scanned through an image sensor; the analog-to-digital conversion chip is used for carrying out analog-to-digital conversion on image scanning data and outputting a digital signal to the programmable logic gate array chip, then the programmable logic gate array chip is used for carrying out correction processing on the digital signal based on correction configuration parameters, and the corrected digital signal is output to the system-on-chip. Before scanning processing, correction configuration parameters are stored in the programmable logic gate array chip, digital signals corresponding to image scanning data are processed through the programmable logic gate array chip, the number of turns of a read-write memory of the system-on-chip is reduced, the data processing load of the system-on-chip is also reduced, and the data processing efficiency is improved. And the external scanning data input rate is improved.

This application provides an image data processing method and apparatus. Specifically, it involves acquiring an image to be processed; the image to be processed includes multiple projected images, each of which is obtained by scanning a target object using SPECT within a sparse angular range at a first interval angle; the first interval angle is greater than a second interval angle for scanning the target object across the entire angular range; denoising the image to be processed is performed to obtain a denoised image; tomographic reconstruction is performed on the denoised image to obtain image domain volume data; denoising is performed on the image domain volume data to obtain denoised image domain volume data; super-resolution processing is performed on the denoised image domain volume data to obtain a target image; the resolution of the target image is higher than the resolution of the image to be processed. In other words, the image data processing method provided by this application can improve scanning speed and reduce scanning time while ensuring image quality.

The invention discloses a night flight airborne early warning device, comprising: an unmanned aerial vehicle component, wherein the unmanned aerial vehicle component comprises an upper mounting plate and a lower mounting plate, wherein a camera device is arranged at the edge of the upper surface of the lower mounting plate, and a laser rangefinder is arranged at the edge of the lower surface of the lower mounting plate. The invention also comprises a center of gravity adjustment component, wherein the center of gravity adjustment component is arranged below the unmanned aerial vehicle component, and wherein the center of gravity adjustment component comprises an installation base, wherein a winding motor and a rope body are arranged inside the installation base, wherein a first through hole is arranged below the installation base, wherein one end of the rope body passes through the first through hole, wherein a driver is arranged at the middle and upper part of the rope body, wherein a connecting rod is arranged on the driver, and wherein adjusting rotors are arranged at both ends of the connecting rod. The invention provides obstacle avoidance data and images by arranging laser rangefinders and camera devices around the unmanned aerial vehicle component and utilizing a combination of visual obstacle avoidance and laser obstacle avoidance. The invention has the characteristics of power saving, long detection distance, fast scanning speed, good light interference resistance, and can realize the functions of multi-angle ranging and ranging without dead angle.

This disclosure provides a method and apparatus for accelerating disk scanning in Windows systems, relating to the computer field. The method includes the following steps: opening a master file table, wherein the master file table includes file records; determining the data attributes of the file corresponding to each file record; based on the file records, extracting the block numbers of file blocks whose data attributes are non-resident, obtaining a block number set; based on the block number set, extracting the logical block number of each block number; based on the logical block numbers, generating a logical block number list; and reading file content based on the logical block number list to complete the disk scan. The method and system of this disclosure, during the disk scanning process, employs a method that sequentially arranges the logical block numbers in the file records of the master file table, allowing the read / write head to sequentially read disk sectors, thereby improving disk scanning speed and saving disk scanning time.