41 results about "Ray launching" patented technology

A ray emission region perpendicular to a normal direction of a sampled texel in a first mesh patch of a first initial three-dimensional mesh model in a three-dimensional virtual scene is constructed. One or more rays that start in the ray emission region and extend in an opposite direction of the normal direction of the sampled texel are constructed. One or more candidate texels that intersect with the one or more rays are determined. When the one or more candidate texels include at least one spatially adjacent texel of the sampled texel, the sampled texel is determined as a first seam texel. From the at least one spatially adjacent texel, a second seam texel having a seam adjacency relationship with the first seam texel is determined. At least a seam repair of the first seam texel and the second seam texel is performed to obtain a target three-dimensional mesh model.

The X-ray detection device capable of being flexibly suitable for the multi-split cable comprises an X-ray machine, an imaging plate and a bearing vehicle body, the bearing vehicle body is provided with a first carrying frame and a second carrying frame, and the first carrying frame and the second carrying frame are both detachably connected with the bearing vehicle body; the distance between the first carrying frame and the second carrying frame can be adjusted; the ray machine is located on the first carrying frame, a ray emitting opening of the ray machine can rotate in the circumferential direction and / or vertically ascend and descend, the imaging plate is located on the second carrying frame, and the imaging plate is in sliding connection with the second carrying frame in the vertical direction. According to the utility model, a multi-angle and wide-range ray detection space is formed between the ray machine and the imaging plate by combining the adjustment of the distance between the first carrying frame and the second carrying frame, the circumferential / vertical adjustment of the emission port of the ray machine on the first carrying frame and the vertical lifting of the imaging plate on the second carrying frame; therefore, the multi-split cable X-ray detection device can be effectively adapted to multi-split cable X-ray detection work under various conditions.

This utility model discloses an amorphous strip thickness gauge, including a detection frame with a detection cavity inside. Two sets of lead screws are symmetrically installed vertically within the detection cavity. A guide rod is provided on one side of each lead screw, and a support plate is fitted onto both the guide rod and the lead screw. An upper X-ray emission tube and an upper detector are mounted on the upper support plate. The advantages are: by setting up a dual-station, upper and lower coaxial measurement structure consisting of an upper X-ray emission tube, a lower detector, a lower X-ray emission tube, and an upper detector, this utility model can simultaneously convert the vertical movement of the strip into changes in the measured values ​​of the upper and lower measurement modules. Through data fusion processing, the influence of the vertical movement can be directly offset, eliminating the maximum error source of online measurement in principle. The measurement accuracy is extremely high, effectively improving the measurement effect and performance of the device.

A computer-implemented method for determining a position of an X-ray emitter of a mobile X-ray device to obtain high-quality mobile X-ray images is provided, the method comprising the steps of receiving a camera-acquired image resulting from a camera monitoring a patient during an X-ray imaging session, a reference X-ray image of an internal body structure to be examined in the X-ray examination, and X-ray detector position information, detecting and locating a plurality of anatomical landmarks in the camera-acquired image, determining a distance from the X-ray emitter to the patient based on the camera-acquired image, generating a virtual X-ray image of the internal body structure based on the detected plurality of anatomical landmarks, the distance from the X-ray emitter to the patient, and the X-ray detector position information, registering the virtual X-ray image of the internal body structure to the reference X-ray image of the internal body structure, and determining at least one parameter for adjusting the position of the X-ray emitter based on the registration result.

This invention relates to the technical field of co-extrusion equipment, specifically to a horizontal three-layer co-extrusion equipment for producing medium-voltage PP cables. The equipment includes an X-ray imaging module, a control module, and a verification module. The X-ray imaging module detects the insulation extrusion layer, the semiconductor extrusion layer, and the outer sheath extrusion layer, and obtains the blurred area of ​​the cable cross-section and the total area of ​​the cable cross-section, transmitting these values ​​to the control module. The control module calculates a fuzziness index based on the blurred area and total area of ​​the cable cross-section and transmits the fuzziness index to the verification module. The verification module determines whether X-rays penetrate the cable cross-section perpendicularly based on the fuzziness index and feeds this information back to the X-ray imaging module. The X-ray imaging module adjusts the X-ray emission angle based on this information. This process helps improve the accuracy of the detection.

The invention relates to the technical field of electrical equipment nondestructive testing, in particular to an electrical facility X-ray digital imaging mobile inspection system which comprises a special detection vehicle, an X-ray source adjustable foot stool, an imaging plate adjustable foot stool, X-ray emission equipment, a DR imaging plate, a vehicle-mounted workstation, a shooting mechanism, wireless receiving equipment and a control mechanism. The special detection vehicle is provided with a control cabin and an equipment storage cabin, the control cabin is a totally-enclosed lead room, and the equipment storage cabin is provided with a radiation protection mechanism; the X-ray source adjustable foot stool and the imaging plate adjustable foot stool each comprise a cross-shaped sliding table base, a multi-stage telescopic stand column and a three-axis pan-tilt joint module, and the multi-stage telescopic stand columns are arranged on the cross-shaped sliding table bases. Through vehicle platform integration, foot stool six-degree-of-freedom precise control, AI real-time defect diagnosis and radiation protection, full-process automation, high safety and high adaptability of X-ray detection of electric power facilities are achieved.

This invention discloses a radiographic testing device for new energy batteries, comprising: a battery conveying mechanism; a radiation emitter mounted on a first position adjustment structure for emitting radiation; and an imaging receiver mounted on a second position adjustment structure for receiving the radiation emitted by the radiation emitter and forming an image. The first position adjustment structure is located above the testing station for adjusting the position of the radiation emitter; the second position adjustment structure is located below the testing station for adjusting the position of the imaging receiver; the radiation emitter and the imaging receiver are arranged opposite each other on both sides of the testing station. This invention provides a battery testing device capable of multi-angle testing, improving the efficiency and imaging quality of non-destructive testing of new energy batteries, and also providing a good equipment foundation for subsequent image processing and judgment.

The invention relates to an indoor wireless signal strength prediction method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: according to a three-dimensional model of an indoor area, constructing an energy flow diagram corresponding to a source node, which is used for representing wireless signal propagation paths from the source node to each target node and a wireless signal energy attenuation relationship of each wireless signal path; the target node is associated with a plurality of receiving points; acquiring a plurality of wireless signal propagation paths from the source node to each target node according to the energy flow diagram, and determining a target propagation path from the plurality of wireless signal propagation paths; wherein the contribution degree of the target propagation path to the signal intensity of the target node meets a preset condition; and based on the target propagation path, determining a ray emission direction of a receiving point associated with the target node and performing ray tracing to obtain predicted wireless signal intensity of the receiving point associated with the target node. By adopting the method, the signal strength prediction efficiency can be improved.

The utility model belongs to the technical field of ray imaging equipment, and relates to a ray emission device and an image generation system.The ray emission device comprises a sensing detection unit, a beam limiting cylinder, a communication unit, a main control board and a shell; the beam limiting cylinder is connected with the shell, the beam limiting cylinder comprises a cylinder body and an annular circuit board, the annular circuit board is installed at one end of the cylinder body, the sensing detection unit is installed on the annular circuit board and comprises at least three sets of sensing assemblies used for detecting and receiving the position of a sensor, and the sensing assemblies are installed on the annular circumference of the annular circuit board. The main control board is installed in the shell, one end of the communication unit is connected with the annular circuit board, and the other end of the communication unit penetrates through the barrel and penetrates into the shell to be connected with the main control board. According to the invention, the position of the receiving sensor can be effectively and accurately positioned, so that the relative position of the ray emitting device and the receiving sensor can be conveniently adjusted.

The embodiment of the utility model discloses security inspection equipment, the security inspection equipment comprises a ray emission assembly, a detection assembly, a transmission assembly and a security inspection channel, the security inspection channel comprises a space enclosed by a support plate, then at least one of the ray emission assembly and the detection assembly can be installed on the support plate, and the transmission assembly can transmit the ray emission assembly and the detection assembly to the security inspection channel. The support plate can support at least one of the ray emission assembly and the detection assembly; therefore, the supporting plates forming the security inspection channel in an enclosing mode can replace independent framework modules in existing security inspection equipment, the original independent framework modules can be omitted, and the technical problems that when the independent framework modules are adopted, the number of parts is large, the requirements for part machining and assembling are high, and cost is high are solved. And on the basis of ensuring that the size of the security check channel meets the requirement, the size of the whole security check equipment is smaller, and the occupied space is reduced.

The invention relates to the technical field of flaw detection, and discloses a high-altitude pipe gallery flaw detection method and system based on unmanned equipment and a storage medium, and the method comprises the following steps: in response to a radiographic inspection instruction, controlling a ray emission assembly to emit rays, and controlling a ray imaging assembly to generate a ray image; the radiographic inspection structure is controlled to rotate around the high-altitude pipe gallery by one circle on the holding structure; acquiring a plurality of rotational vibration data, calculating to obtain an acquired vibration value, if the acquired vibration value is greater than the acquired reference vibration value, calculating an acquired vibration comparison value, and adjusting the first rotational speed according to positive correlation of the acquired vibration comparison value; the enclasping structure is controlled to move to the translation length in the high-altitude pipe gallery; collecting a plurality of translational vibration data, calculating to obtain a translational vibration value, if the translational vibration value is greater than a translational reference vibration value, calculating a translational vibration contrast value, and adjusting the first movement speed according to negative correlation of the translational vibration contrast value; and the flaw detection accuracy of the high-altitude pipe gallery is improved.

The present application relates to a kind of disc cutting platform silage corn harvester foreign matter real-time online detection method and device, the device is by X Ray transmitter, X Ray receiving device, 5G intelligent signal transmitter, image processing and foreign matter identification system, real-time display and alarm system composition; X Ray receiving device includes photoelectric converter, circuit board, photosensitive rubber plate, realizes X Ray signal conversion and transmission;Image processing and foreign matter identification system includes filtering denoising module, image enhancement module, foreign matter identification module, realizes fast, high-precision identification foreign matter;Real-time display and alarm system includes real-time display screen, manual brake button, detection alarm, real-time transmission detection information, and send alarm.The present application solves the problem that non-metallic foreign matter such as stone cannot be detected, improves the detection rate and detection stability, avoids the damage of blade inside silage machine, prevents metal, stone and other foreign matter from entering the body of livestock with silage feed.

The utility model relates to the technical field of thickness gauges, in particular to an X-ray thickness gauge based on EtherCAT communication, which comprises a master station and servo controllers, the master station adopts an STM32 chip as a core, the master station and the servo controllers are connected with each other through EtherCAT, the number of the servo controllers is two, the servo controllers are respectively connected with motors, the motors are connected with probes, and the probes are connected with the master station. An X-ray emitter and a receiver are arranged in the probe, an acquisition card is arranged on the receiver, the acquisition card is connected with the master station through EtherCAT, the master station is connected with an upper computer, and the master station is connected with the upper computer through UDP. According to the utility model, the sampling frequency of the sensor can be improved to obtain more accurate data, and the practicability is realized.

The utility model discloses an X-ray camera system and a bearing device thereof, the X-ray camera system further comprises an X-ray emitting device and an X-ray detector, the bearing device can independently move relative to the X-ray emitting device under the action of force of a single user, and the bearing device comprises a base, a bearing part and a first electric energy sending module; the bearing component is mounted on the base and used for placing the X-ray detector, and the bearing component and / or the X-ray detector placed on the bearing component can support the upper limb of a to-be-detected object for X-ray imaging; the first electric energy transmitting module is arranged on the bearing part and is used for supplying power to the X-ray detector placed at the bearing part in a wired and / or wireless manner. According to the embodiment of the invention, the endurance of the X-ray detector can be improved.

The utility model relates to the technical field of coating surface density detection devices, and discloses a pole piece coating surface density detection device which comprises a ray emitter and a ray receiver, the ray emitter is used for emitting rays capable of penetrating through a pole piece to the pole piece, the ray receiver is used for receiving the rays emitted by the ray emitter and penetrating through the pole piece, and the ray receiver is used for receiving the rays emitted by the ray emitter and penetrating through the pole piece. The ray emitter can move in a reciprocating mode in the first direction so as to change the area of a light spot formed on the pole piece. Therefore, the ray emitter is configured to be capable of changing the light spot area formed by the emitted rays on the pole piece, a large light spot is used in the main film area of the pole piece for detection, and a small light spot is used in the thinned area of the pole piece for detection, so that the coating surface density measurement precision of the thinned area of the pole piece can be improved; the surface density fluctuation of the thinning area can be captured in time, so that the detection precision can be improved, the product percent of pass can be improved, and the use reliability of the battery can be improved.

The utility model belongs to the technical field of electrode detection, and particularly relates to a projection device for detecting the internal structure of an electrode, which comprises a fixed bin, a detection bin is arranged in the fixed bin, a ray emitter is arranged in one side wall of the detection bin, and a ray receiver is arranged in the other side wall of the detection bin. A radiating device is arranged on one side of the ray emitter, a driving motor is arranged below the detection bin, four supporting legs are arranged at the four corners of the lower surface of the detection bin respectively, the upper ends of the four supporting legs are fixedly connected with the lower surface of the detection bin, and the lower ends of the four supporting legs are fixedly connected with the lower surface in the fixed bin. According to the utility model, the driving turntable is arranged on the driving motor, the transmission device is used for driving the small disc to rotate through the large disc, the cooling fan is driven to rotate to carry out air cooling heat dissipation on the ray generator, the continuous use time of the device is prolonged, and the X-ray cannot irradiate the body of a user when the device is used for detection by arranging two layers of lead sleeve boxes.

The invention relates to a method for monitoring the forming quality of an additive manufacturing workpiece, which is used for solving the technical problem of low accuracy in the existing monitoring mode, and comprises the following steps: printing a workpiece layer by layer; printing operation is paused after a fixed number of layers are printed, and powder existing on the workpiece is removed; a ray emitter and a ray receiver are used for conducting CT scanning on the workpiece; performing image reconstruction on the acquired CT data; and analyzing according to the reconstructed image, and deciding whether to continue printing or stop processing. According to the method, through a CT detection link, an image reconstruction stage and image analysis, internal comprehensive information can be obtained by penetrating through a workpiece, and tiny defects are accurately captured; the CT data is converted into a visual and clear fault and three-dimensional image by means of an algorithm, information such as the shape, the position and the size of the defect is presented, the visualization and the interpretability of the data are improved, human judgment errors are reduced, and the accuracy of monitoring data is integrally improved.

The utility model discloses a mobile X-ray machine with a collimation function, and relates to the technical field of calibration equipment, and the mobile X-ray machine comprises a machine head, a range finder, a flat panel detector and a support frame; the machine head is provided with an X-ray tube for X-ray detection; the range finder is fixedly connected with the machine head and comprises a plurality of range finding modules, the signal emission directions of the range finding modules are the same, and the signal emission directions of the range finding modules are perpendicular to the ray emission direction of the X-ray tube; the flat panel detector is separated from the distance measuring instrument, can reflect a signal transmitted by the distance measuring module, and is used for controlling the orientation of the X-ray tube; the supporting frame comprises a rotating shaft, and the rotating shaft is connected with the machine head and the supporting frame so that the machine head can rotate relative to the supporting frame. Through the cooperation of the flat panel detector 3 and the range finder 2, the X-ray machine can keep vertical to detect an object to be detected in a non-horizontal plane, and the detection accuracy is guaranteed.

The utility model discloses a device for detecting the distance between subway rails. The device comprises a bottom plate, the top of the bottom plate is connected with a detector, a handrail is arranged at the top of the bottom plate, a sliding block is arranged at the bottom of the bottom plate, wheels are arranged on the two sides of the bottom plate, and an infrared transmitting device is arranged at the bottom of the detector. According to the utility model, the mutual action of the detector and the slide block is adopted, the detection method of the subway track is perfected, compared with the mode of measuring by adopting a distance measuring ruler, the mutual action of the detector and the slide block can reflect the problems of the distance between the subway track and the levelness of the track more timely, and the detection efficiency is higher.

The invention discloses a ray display method and device based on a virtual scene, equipment and a storage medium, and belongs to the technical field of computers. According to the technical scheme, the assembling page of the virtual item emitter is displayed in the virtual scene, the multiple candidate assembling positions are displayed in the page, the function of assembling the virtual item emitter is provided, and the target assembling position can be automatically selected from the multiple candidate assembling positions during assembling. In the aiming process, the rays are displayed according to the assembling positions of the target virtual object, the virtual prop emitter and the virtual ray emitter, so that the rays can point to the aiming position of the virtual prop emitter, aiming of a user is assisted through the rays, the aiming difficulty is reduced, and the man-machine interaction efficiency is improved.

Rapid forming equipment for producing oil cylinder parts comprises a forming platform and a forming device, and is characterized in that the forming platform used for forming the oil cylinder parts is arranged below the forming device, a clamping part is arranged on the forming platform, side edge platforms are arranged on the two sides of the forming platform, and the clamping part is arranged on the side edge platforms. A driving air cylinder is arranged on the side platform, a telescopic rod is arranged on the driving air cylinder, it can be guaranteed that oil cylinder parts are evenly stressed in a clamping space, deformation or damage caused by improper clamping is avoided, a good foundation is laid for subsequent machining, the induction ray emitter assists in calibrating the position of a workpiece, and the machining precision is improved. The electric rotating disc is matched with the position information transmitted by the radio frequency chip on the reflective circular identification plate and the height control hydraulic cylinder to adjust the height of the identification plate, and accurate positioning of the workpiece can be achieved.

The utility model provides a kind of applicable to PE pipeline ray detection device, including pedestal, pedestal is provided with support, support is provided with detection ring board, ray transmitter, the lower side wall of mounting plate ring board is provided with ray receiver, fixing bracket, support ring board, at least three adjusting screw rod, the inboard end of adjusting screw rod is rotatably connected with mounting bracket, rotatably connected with support wheel in mounting bracket, mounting bracket is also provided with the guide rod slidingly connected with support ring board.According to the applicable to PE pipeline ray detection device of the utility model, not only the basic demand of detecting the internal defect of pipeline can be met, but also the pipeline can be conveniently passed through the detection structure in the same way as the detection structure concentric by the auxiliary support structure, so as to fully meet the use demand of people.

The utility model provides a kind of integrally formed wind power blade detection device, comprising: first mobile system, along the side of integrally formed wind power blade to be detected is arranged;Second mobile system, it is parallelly arranged in the other side of blade with first mobile system;Ray receiver, movably installed on second mobile system;Ultrasonic phased array flaw detection unit;Ray transmitter;And main control and data processing module, for controlling mobile system and each detection unit;Wherein, ultrasonic phased array flaw detection unit and ray transmitter are as independently movable unit, and are installed side by side on first mobile system.The utility model is by the detection unit of two different physical principles of ultrasonic phased array flaw detection unit and ray transmitter, innovatively parallelly arranged on the first mobile system of same side, and make it all have independent moving ability.

The invention belongs to the technical field of electric power transmission line fitting crimping quality detection. The invention provides a double-unmanned-aerial-vehicle synchronous control method and system for line crimping fitting detection. Two unmanned aerial vehicles respectively receive a detection initial path and a time synchronization parameter of a ground control terminal; the two unmanned aerial vehicles fly according to respective detection initial paths and keep time synchronization according to the time synchronization parameters; after reaching a detection area, the first unmanned aerial vehicle is adjusted to a detection position, the second unmanned aerial vehicle is adjusted to a ray emission position, and the first unmanned aerial vehicle and the second unmanned aerial vehicle perform target point joint positioning through time difference positioning and direction finding positioning; the transmitter transmits rays to the flat panel detector, the flat panel detector receives a ray signal and converts the ray signal into an electric signal, and the electric signal is relayed by the second unmanned aerial vehicle and then transmitted back to the ground control terminal for line crimping fitting detection; according to the invention, automatic dynamic positioning of the target point and synchronous control of the double unmanned aerial vehicles are realized, and the detection efficiency, safety and reliability are improved.

The present application relates to the technical field of image processing, and discloses a kind of ray machine imaging positioning method, system, electronic equipment and medium, the present application utilizes the image information obtained by camera to carry out conversion to the projection offset of the center point of target position relative to camera optical center on camera coordinate system, the relative position relationship of camera optical center and the ray emitting point of ray machine is used to compensate the projection offset, to obtain the first position adjustment vector, the ray emitting point of ray machine is adjusted in position in x-axis direction and y-axis direction on camera coordinate system, and the relative distance constraint of target position and the best focal length of ray machine are used to satisfy the ray exposure limit of ray machine, to determine the second position adjustment vector, so as to adjust the ray emitting point in position in z-axis direction on camera coordinate system, to realize accurate positioning to the shooting position of ray machine, improve imaging quality and shooting efficiency.

The invention discloses an overhead insulated cable defect diagnosis method, and relates to the technical field of intelligent operation and maintenance and state monitoring of overhead power lines. Comprising the following steps: controlling a first unmanned aerial vehicle and a second unmanned aerial vehicle to cooperatively fly and accurately position, and scanning the overhead insulated cable by using an X-ray emitter and a detector to obtain an original X-ray image; deblurring the original X-ray image through an image deblurring module to obtain a clear image; inputting the obtained clear image into an improved YOLOX-Tiny target detection module to obtain a bounding box of the cable, a state classification label of the cable and a direction label of the cable, and realizing defect diagnosis of the cable; based on the direction label, generating a course guide instruction flying along the cable extension direction through the first unmanned aerial vehicle and the second unmanned aerial vehicle to control the unmanned aerial vehicles to fly along the cable extension direction; and continuously scanning and diagnosing the whole section of overhead insulated cable. According to the invention, internal defect diagnosis of the overhead insulated cable can be realized through an automatic means.

The utility model discloses detection equipment, and relates to the technical field of workpiece detection. The detection equipment comprises a mounting frame, a bearing device, a ray emitting device and a ray receiving device. The bearing device is mounted on the mounting frame and comprises a bottom plate, and a first detection tabletop assembly and a second detection tabletop assembly which can be selectively mounted on the bottom plate; the first detection desktop assembly is suitable for a first to-be-detected product, and the second detection desktop assembly is suitable for a second to-be-detected product; the ray emitting device is arranged on the side, away from the first detection tabletop assembly or the second detection tabletop assembly, of the bottom plate. The ray emitting device is used for emitting detection rays to a to-be-detected product; the ray receiving device is mounted on the mounting frame and is arranged opposite to the first detection table top assembly or the second detection table top assembly; the ray receiving device is used for receiving the detection rays penetrating through the to-be-detected product so as to generate a detection image. The detection equipment is used for realizing single-machine multifunctional detection and meets the detection requirements of different products.

The utility model discloses X-ray component data acquisition equipment which comprises a box body, the interior of the box body is divided into an acquisition chamber and a control chamber, an X-ray emitting device and an X-ray receiving device are arranged in the acquisition chamber, a rotating disc is installed at the bottom of the acquisition chamber, a bearing plate is installed at the top of the rotating disc through a lifting assembly, and the bearing plate is connected with the control chamber. A fixing assembly is mounted on the bearing plate; a transmission shaft is installed in the control chamber, a driving motor, an integrated controller and an air extracting pump are arranged in the control chamber, the output end of the driving motor is in transmission connection with the transmission shaft through a linkage belt, a bottom groove is formed in the bottom of the box body, and a fixed suction cup is installed in the bottom groove; the device for detecting the cultural relics is small in size and convenient to carry, and meanwhile, the cultural relics to be detected can be conveniently limited and fixed; the device can adjust the angle and height of the cultural relics, and facilitates the data collection of the cultural relics.

The present invention discloses an X-ray tube spot position calibration device and an X-ray tube spot position calibration method, wherein the X-ray tube spot position calibration device comprises: an X-ray tube, a first setting member and a second setting member, a detector and a theodolite. The ray emission direction of the X-ray tube is a first direction, the first setting member and the second setting member are arranged along the first direction with the X-ray tube, the first setting member is located between the X-ray tube and the second setting member, the first setting member has a first slit extending along the second direction, the second setting member has a second slit extending along the second direction, the detector is used to detect the signal intensity passing through the first slit and the second slit, and the theodolite is used to construct a plane according to the positions of the first slit and the second slit. According to the X-ray tube cursor position calibration device of the present invention, the spot position of the X-ray tube can be marked more conveniently, thereby facilitating the application of X-rays in an absorption spectrometer.

The invention relates to a beam spot size determination method and device, computer equipment and ray emission equipment. And determining a target electromagnetic field on the basis of a target beam spot size required in the Z fly-focus process, a target electrical parameter of the X-ray tube and a preset corresponding relation at the two fly-focus positions, and respectively controlling the electron beams incident to the two fly-focus positions according to the target electromagnetic field so as to form a focus on an anode target disc in the X-ray tube. Because the preset corresponding relation is tested and stored in advance, in the embodiment of the invention, the size of the target beam spot and the target electromagnetic field corresponding to the target electrical parameter can be determined through the preset corresponding relation in the Z-femtofocus process, and the size of the focus in the Z-femtofocus process is synchronously adjusted by changing the magnetic field or the electric field, so that the accuracy of the Z-femtofocus is improved. The sizes of the beam spots corresponding to the positions of the two flying focuses are kept consistent, and the problem that the image resolutions are inconsistent when the sizes of the beam spots are inconsistent is avoided.