37 results about "Cathode ray" patented technology

This invention relates to a cold cathode X-ray inspection system and method with eddy current detection function, used for defect detection and evaluation of composite materials with conductive and magnetic panels and pure metal materials of a certain thickness. The inspection system includes a cold cathode X-ray instrument, a DR receiving panel, and a laptop computer. In addition to the cold cathode X-ray detection board, the mainboard of the cold cathode X-ray instrument also has an eddy current detection board. The eddy current detection board and the cold cathode X-ray detection board share the built-in power supply unit and operation unit of the cold cathode X-ray instrument. A transparent flexible panel is added to the photosensitive element layer of the DR receiving panel. A transparent detection coil made of metal coating technology with an array arrangement is set on the transparent flexible panel. During the inspection, the cold cathode X-ray image of the inspected workpiece and the eddy current detection signal on the surface of the inspected workpiece can be acquired simultaneously. By comparing, fusing, and analyzing the two image signals, a complete and accurate inspection result is obtained.

The invention relates to the technical field of ray detection, and particularly discloses a cold cathode ray machine digital control system based on high-frequency inversion and pulse modulation, which specifically comprises a master control and calculation module, a high-frequency high-voltage inversion and modulation module, a pulse driving and field emission control module and a precise sensing and acquisition module which are in communication connection with one another, a safety interlocking and state monitoring module; and a man-machine interface and communication module. According to the invention, a closed-loop control scheme of high-frequency inversion, pulse modulation and cathode state is provided for the first time, the problem of separation of independent operation of a power supply, a controller and an emitter of a traditional system is solved, and cross-module collaborative optimization is realized.

The invention discloses a purification device with a cathode ray washing function, and relates to the technical field of purification devices. Comprising a purification cavity, the bottom of the purification cavity is connected with a main conveying channel through a side conveying channel, a mounting base is mounted in the purification cavity, anode tubes distributed in an array mode are arranged on the inner side of the mounting base, and cathode wires are arranged in the centers of the anode tubes; an injection mechanism for cleaning is mounted in the purification cavity and comprises a water distribution pipe, and the water distribution pipe is fixed in the purification cavity through a fixing frame. Through the arrangement of the spraying mechanism, when dust removal operation is carried out through cooperation of a cathode wire and an anode pipe, water can be supplied into a water distribution pipe through a water supply pipe according to requirements in order to clean impurities attached to the surface, water is input into a water spraying pipe through the water distribution pipe and a conveying pipe, and the water spraying pipe is driven to rotate based on an impeller based on flowing of the water; the two nozzles are used for outputting water, and the rotationally output water can better flush the anode tube and the cathode wire.

The utility model provides a Hall effect demonstration instrument based on a cathode-ray tube. The Hall effect demonstration instrument comprises a high-voltage power supply module, wherein the high-voltage power supply module generates extra-high voltage to drive the cathode-ray tube on the right side. The experimental phenomenon visualization part comprises a cathode-ray tube, a permanent magnet and a light emitting diode, after the cathode and the anode of the cathode-ray tube are connected with high voltage, cathode ray beams, namely electron beams, are generated, and tracks of the electron beams are displayed through an internally arranged fluorescent screen; the two permanent magnets are respectively positioned on two sides of the cathode ray tube to provide a magnetic field; the light emitting diode is connected with a receiving pole plate in the vertical direction inside the cathode ray tube through a wire, the Hall voltage is visualized into an optical signal, the Hall effect demonstration instrument solves the defect that the Hall effect principle is difficult to visualize in the Hall effect teaching process to a certain extent, and the experiment teaching effect can be improved.

Provided is an AlN monocrystal substrate exhibiting a high transmittance (i.e., a low absorption constant) in the ultraviolet region (e.g., a wavelength of 265 nm). This AlN monocrystal substrate is composed of AlN monocrystals and measures at least 100 μm in thickness. In a cathodoluminescence (CL) spectrum measured at a temperature of 30K, the ratio IB / IA of the peak intensity IB observed at 270-370 nm to the peak intensity IA observed at 200-230 nm is less than 4300. When a Raman spectrum corresponding to a depth position relative to the surface of the AlN monocrystal substrate is acquired by laser Raman spectroscopy, the difference between the wave number at which the E2 H peak is given in the Raman spectrum at a position 40 μm deep from the surface of the AlN monocrystal substrate and the wave number at which the E2 H peak is given in the Raman spectrum at a position 5 μm deep from the surface of the AlN monocrystal substrate is 0.40 cm-1 or less.

The present invention provides a method for measuring the oxygen concentration of an oxygen atomic layer of an epitaxial wafer in which the oxygen atomic layer and a single crystal silicon epitaxial layer on the oxygen atomic layer are formed on a silicon single crystal substrate. The method includes: creating in advance a calibration curve between the oxygen concentration of the oxygen atomic layer of an epitaxial wafer for a preliminary test and the band edge emission intensity of the epitaxial wafer for the preliminary test as determined by a photoluminescence method or a cathode luminescence method; and measuring the oxygen concentration of an oxygen atomic layer of an epitaxial wafer to be measured from the measurement result of the band edge emission intensity of the epitaxial wafer to be measured using the calibration curve. As a result, there is provided a method for measuring the oxygen concentration of an oxygen atomic layer in an epitaxial wafer in a stable and simple way in a non-destructive manner.

This application relates to the field of detection and discloses a cold cathode ray control method, device, medium, and product. The method includes: acquiring operating parameters and environmental parameters of a cold cathode device, and calculating equivalent cathode work function parameters; comparing the operating parameters, environmental parameters, and equivalent cathode work function parameters with preset target parameters in real time, and calculating control deviation values; using the control deviation values, equivalent cathode work function parameters, and operating parameters as input features, inputting them into a neural network control algorithm that constructs a physical constraint layer, calculating and outputting a gate drive signal and a focusing coil drive signal; calculating a voltage compensation amount based on the evolution trend of the equivalent cathode work function parameters, and using the voltage compensation amount to combine with the gate drive signal to generate a final drive command; applying the final drive command and the focusing coil drive signal to the cold cathode device, and repeating the above steps to ensure that the real-time acquired ray intensity meets the requirements of the preset target parameters.

The invention discloses a cold cathode ray detection control system, which comprises a ray tube with a cold cathode, a power supply module and a control module for modulating and boosting the power supply module and providing excitation X-rays for the ray tube for detection, and the control module comprises a master control and calculation module MCC, the master control and calculation module MCC is in bidirectional communication connection with a high-frequency high-voltage inversion and modulation module HFHI, a pulse driving and field emission control module FDEC, a precision sensing and acquisition module PSA, a safety interlocking and state monitoring module SISM and a man-machine interface and communication module HCI through a high-speed digital control bus. According to the invention, through algorithm optimization, the corresponding delay is suddenly reduced from the traditional 100us level to below 5us, the speed is obviously increased, and pulse-level real-time regulation and control can be realized; meanwhile, current and voltage precision adjustment is also remarkably improved, and accurate and stable output of dosage can be realized.

1. The name of the design product: compact cold cathode ray machine. 2. The use of the design product: the design product is a cold cathode ray machine. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention discloses a novel Gd2O2S: Tb < 3 + >-coated CaF2 core / shell structure composite fluorescent material and a preparation method thereof. According to the composition of the material, Gd2O2S: Tb < 3 + > serves as a core, CaF2 is deposited on the surface of Gd2O2S: Tb < 3 + > fluorescent powder to serve as a shell, and the thickness of the shell is about 5-80 nm. The preparation technology of the fluorescent material comprises the following steps: preparing Gd2O2S: Tb < 3 + > fluorescent powder by a high-temperature solid-phase method, then adding the fluorescent powder into an absolute ethyl alcohol solution containing CaCl2 and NH4F, and heating and stirring for 3-4 hours in a water bath environment of 60-90 DEG C so as to finish coating treatment of CaF2. Finally, the Gd2O2S: Tb < 3 + > and CaF2 core / shell structure fluorescent material is successfully prepared through the steps of ultrasonic dispersion, deionized water washing, drying and the like. According to the Gd2O2S: Tb < 3 + > CaF2 core / shell structure fluorescent material prepared by the invention, the photoluminescence intensity and cathode ray luminescence intensity of Gd2O2S: Tb < 3 + > fluorescent powder are greatly improved.

The invention discloses an X-ray imaging motion control system based on a carbon nano tube. The X-ray imaging motion control system comprises a carbon nano tube cold cathode X-ray source, a flat panel detector, a sliding table module, a rotary table, a short sliding table, an optical flat panel, an aluminum alloy frame and an upper computer, a ball screw of each sliding table module is provided with a driving sliding block and a driven sliding block, the driving sliding blocks drive the driven sliding blocks to operate within the full range of the effective stroke of the lead screws under driving of a motor, a flat panel detector and a short sliding table are fixed to the two sliding table modules, a carrying rotary table is fixed to the short sliding table, and a four-axis motion platform is formed. The motion controller controls the output pulse of the motor driver to adjust the running state of the four-axis motor in real time, and the upper computer can achieve the functions of starting, stopping, running distance, running speed, running direction, state display and the like of each axis. The carbon nanotube cold cathode X-ray source can generate continuous and pulse X-rays, and high-efficiency and low-artifact real-time nondestructive inspection of a dynamic object is integrally realized by combining a four-axis motion platform.

The present invention belongs to the technical field of X-ray instruments, and in particular relates to a cold cathode wireless small X-ray instrument, which includes a mounting bracket and a ray instrument main body fixedly installed on the mounting bracket, and further includes: an angle synchronization adjustment mechanism for use, an active heat dissipation mechanism, a propulsion mechanism, a workpiece inclination detection and feedback mechanism, a ray power synchronization control mechanism, and a heat dissipation intensity feedback control mechanism. The present invention can quickly detect and confirm the inclination of the workpiece to be detected, and quickly adjust the installation position of the ray instrument main body based on the obtained inclination information, so that the X-ray emitted by the ray instrument main body can be perpendicular to the workpiece to be detected. Furthermore, the cold cathode X-ray instrument can provide more accurate detection results, and can automatically detect the distance between the cold cathode X-ray instrument and the workpiece to be detected during the detection of the workpiece inclination, and automatically adjust the ray emission intensity of the cold cathode X-ray instrument based on the distance size.

1. Name of the design product: Cathode ray (carbon fiber). 2. Use of the design product: For electrostatic precipitators. 3. Design key points of the design product: The combination of shape and pattern. 4. Picture or photograph that best shows the design key points: Perspective view.

A method and system for realizing a high-speed rotating cathode-based x-ray illumination source suitable for high-throughput x-ray metrology is disclosed. The high-speed rotating cathode includes a water-cooled rotating platen supported by radial and thrust air bearings using cascaded differential pumping. Extremely high bending stiffness of the rotating assembly is achieved by spaced-apart radial air bearings and locating the rotary motor and thrust bearing between the radial air bearings. The high bending stiffness increases the mechanical stability of the rotating assembly during high-speed operation, thereby reducing vibrations where the electron beam strikes the rotating cathode material. In some embodiments, a magnetic thrust bearing is used, and the air gap is controlled to maintain the desired air gap over an operating range of up to 3 millimeters.

This invention belongs to the field of non-destructive testing equipment technology, and specifically relates to a cold cathode X-ray flaw detector for pipelines. It includes a cold cathode X-ray emitting module and a pipeline crawler. The bottom end of the cold cathode X-ray emitting module is fixedly connected to the top end of the pipeline crawler. A heat insulation box is fixedly connected to the top end of the pipeline crawler, and a temperature regulating mechanism is fixedly connected to the inner wall of the heat insulation box. A rectangular mounting hole is opened at the top end of the heat insulation box, and a U-shaped block is fixedly connected to the wall of the rectangular mounting hole. A support rod and a pad are fixedly connected to the inner wall of the U-shaped block. This invention enables the cold cathode X-ray flaw detector to not only have temperature regulation and limiting functions to prevent displacement of the pipeline crawler, but also improves the cold cathode X-ray flaw detector's resistance to harsh environments, further enhancing the reliability of the cold cathode X-ray flaw detector's operation and the accuracy of the test results. It can meet the needs of non-destructive testing of large-size pipeline welds in different seasons.

The embodiment of the application relates to the technical field of security inspection, and discloses a cold cathode X-ray luggage security inspection instrument, a control method and a program product; the security inspection instrument comprises a cold cathode X-ray source and a conveying unit; the method comprises the following steps: acquiring load data and shape size data of a detected object, and monitoring conveying speed of the conveying unit in real time; calculating an equivalent density parameter of the detected object according to the load data and the shape size data; determining basic working parameters of the cold cathode X-ray source according to the equivalent density parameter; adjusting a negative secondary high-voltage amplitude in a negative secondary high-voltage circuit; simultaneously adjusting an output amplitude of a positive high-voltage circuit; performing dynamic exposure compensation on the cold cathode X-ray source according to the conveying speed; adjusting a duty cycle of a positive high-voltage output in the positive high-voltage circuit in real time; during beam emission of the cold cathode X-ray source, collecting high-energy signals and low-energy signals penetrating through the detected object, and generating an X-ray image, so that imaging quality is ensured, and device power consumption is significantly reduced.

The invention belongs to the technical field of aerial cableway detection equipment, and particularly relates to a ray detection device for an aerial cableway based on an unmanned aerial vehicle. Comprising an unmanned aerial vehicle body, an unmanned aerial vehicle control terminal, a cold cathode X-ray detection host, a cold cathode X-ray emission module, a cold cathode X-ray detection module, a first wireless signal transceiver module and a second wireless signal transceiver module, the bottom end of the unmanned aerial vehicle body is fixedly connected with a mounting bracket, and the bottom end of the mounting bracket is fixedly connected with a horizontal moving mechanism. According to the high-altitude ropeway nondestructive testing system, efficient, stable and high-precision nondestructive testing of the high-altitude ropeway is completed through full-process cooperative work of airborne end accurate in-position, high-altitude ropeway rigid limiting, autonomous moving scanning, synchronous cleaning protection, real-time imaging detection, airflow interference protection and data wireless return, and the high-altitude ropeway nondestructive testing system is adaptive to outdoor high-altitude complex working environments; the core problems of tedious operation, weak anti-interference capability, poor imaging stability, incomplete detection coverage and the like in the prior art are solved.

The invention relates to the technical field of ray detection, and particularly discloses an intelligent imaging auxiliary system of a cold cathode ray machine, which comprises a multi-modal data acquisition unit for acquiring original imaging data and pose data, a motion compensation tomography reconstruction module, a defect quantitative analysis module and a decision support module, and comparing the defect parameter set with a defect parameter library preset by the system, and outputting the current detection image and a label document containing whether the defect exists or not and the type or residual life prediction. According to the method, equipment jitter is collected in real time by integrating the IMU, meanwhile, an innovative algorithm is matched, jitter information and original projection data are combined, motion artifacts are compensated in real time in the image reconstruction process, the definition of a detected image is improved, and image noise is reduced.

X-ray absorption of breast cancers and surrounding healthy tissue can be very similar, a situation that sometimes leads to missed cancers or false-positive diagnoses. To increase the accuracy of tomosynthesis and cancer diagnosis, dynamic X-ray elastography using a novel pulsed X-ray source synchronized to shear waves generated in a sample is described in the present disclosure. This imaging modality provides both absorption and mechanical properties of the imaged sample. A vibration source is used to vibrate the sample while a synchronously pulsed cold cathode X-ray source images the mechanical deformation. The generated stroboscopic images are further used to derive stiffness maps of the sample in addition to the conventional X-ray image.

This X-ray photoelectron spectrometer is provided with a sample stage 1 having a movement range such that the whole surface of a semiconductor wafer having a diameter of 300 mm or more can be inspected, and an X-ray optical device 2 having the configuration herein described. The X-ray optical device 2 includes a rotating anticathode X-ray source 20 and an X-ray optical system 30 as components. The X-ray optical system 30 extracts X-rays having a specific bandwidth through used of a flat crystal optical system 32 from X-rays collimated by a collimating optical system 31, condenses the X-rays having the specific bandwidth through use of a condensing optical system 33, and irradiates the surface of a semiconductor wafer.

The invention relates to the technical field of nondestructive testing, and discloses a superheater oxide skin detection method and system based on cold cathode rays, and the method comprises the steps: emitting a fixed energy electron beam; reflection signals are synchronously received through a plurality of circumferential detection units; time-energy double-domain filtering and main reflection peak cluster extraction are carried out; constructing a local normal vector field to correct the geometric path; and calculating the thickness of the oxide skin by combining a penetration depth model. The system comprises a cold cathode ray emission device, a multi-channel detection array, a high-speed signal preprocessing module, a time-energy joint analysis module, a surface topography modeling module and a thickness calculation module, and is integrated with a temperature compensation and mechanical scanning mechanism. According to the invention, through multi-angle detection and self-adaptive morphology compensation, the signal-to-noise ratio and the measurement precision are significantly improved, when the surface roughness Ra reaches 50 microns, the relative error of thickness measurement is less than 3%, and the method is suitable for a high-temperature and high-dust environment of a power station boiler.

This invention relates to a method and device for fabricating a curved cold cathode X-ray source, achieving better process compatibility, more precise curvature, and a more precise and compact structure. The fabricated curved cold cathode X-ray source includes: a curved anode substrate, a curved cathode substrate, and an insulating isolator; the curved anode substrate includes a curved anode base and a metal anode target disposed on the curved anode substrate; the curved cathode substrate includes a curved cathode base, a cathode electrode disposed on the curved cathode base, a cold cathode emitter array disposed on the cathode electrode, an insulating layer, and a gate electrode disposed on the insulating layer; the metal anode target is fixedly connected to one side of the insulating isolator, and the cathode electrode is fixedly connected to the other side of the insulating isolator.

The present application relates to a kind of wing composite material in situ cold cathode X-ray detection device and method, device includes base, liftable support frame, U-shaped fixing frame, clamping plate, cold cathode X-ray emitter, DR imaging plate, range camera and wireless controller, detection method is using the cold cathode X-ray detection device of above-mentioned intelligent shape to carry out the shape of wing beforehand, form detection path, when aircraft completes flight task and enters detection, through wireless control detection device, aircraft wing composite material is detected quickly automatically.By setting cold cathode X-ray detection device, the detection of aircraft wing composite material is carried out, the weakness of traditional thermal ray equipment, such as large size and strong radiation, is overcome, and the safety of detection is improved.By the setting of simulation detection path, the adjustment of control during detection is reduced, so that the detection process is more smooth, and the detection efficiency is improved.The reliability of detection result is improved by verifying simulation detection path by pre-detection.

The utility model relates to ray detection technical field, specifically disclose a compact cold cathode ray machine, including X ray generating device, electric appliance control box, lithium cell and shell, X ray generating device is the ray tube of built -in vacuum electron accelerating cavity, electric appliance control box is connected with lithium cell electricity and will lithium cell provided direct current voltage regulation to 100Kv 180Kv again with the cold cathode field emission array and rotating anode target of installation in the ray tube near both ends position electricity is connected, the lateral wall of ray tube is by the vacuum sealing layer of setting from inside to outside in proper order, electrical insulation layer, X ray shielding layer and mechanical support layer composition. The utility model adopts four layer compound lateral wall to realize " vacuum - insulation - shielding - support " integration, and the weight reduces 50% than traditional design, in the power drive aspect, adopts SiC LLC topology to make power volume < 0.5L, and power density can reach 8kW / L.

The present invention belongs to the technical field of X-ray tube sources, and in particular relates to a miniature cathodeless X-ray generator for calibrating space X-ray detectors, comprising: a high-voltage transformer (1), a high-voltage multiplier rectifier (2), a miniature cathodeless X-ray tube (3) and a structural shielding box (5); the high-voltage transformer (1) is electrically connected to the high-voltage multiplier rectifier (2), and the high-voltage multiplier rectifier (2) is electrically connected to the miniature cathodeless X-ray tube (3); the high-voltage transformer (1), the high-voltage multiplier rectifier (2) and the miniature cathodeless X-ray tube (3) are all arranged in the structural shielding box (5) and are potted with high-voltage insulating potting glue (4) to form a sealed structure.

1. Name of the product in this design: Cold Cathode Ray Machine (Portable). 2. Purpose of this design: This design is for a portable cold cathode ray machine. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

An apparatus for providing electrical power to a load includes a voltage source, a check valve that is oriented to prevent current from flowing towards the load, a vacuum diode that includes a cathode and an anode separated by a gap, and a magnet. The cathode and the anode are coated with a corresponding ceramic that includes a titanate group bonded to one of strontium and nickel. The magnet is oriented to cause magnetic field lines that are parallel to a cathode ray that forms across the gap during operation of the vacuum diode. The load is connected between the voltage source and the check valve and the vacuum diode is connected between the check valve and the load such that electric current into the load includes a contribution from the cathode ray in the vacuum diode.

The application relates to the technical field of ray detection, and particularly discloses a cold cathode ray machine digital control system based on high-frequency inversion and pulse modulation, which specifically comprises a master control module and a calculation module, a high-frequency high-voltage inversion and modulation module, a pulse driving and field emission control module, a precision sensing and acquisition module, a safety interlocking and state monitoring module, and a man-machine interface and communication module. The application first proposes a closed-loop control scheme of high-frequency inversion, pulse modulation and cathode state, solves the problem of the independent operation of traditional system power supply, control and emitter, and realizes cross-module collaborative optimization.

The embodiment of the invention relates to the technical field of vehicle security check, and discloses a self-adaptive vehicle cold cathode X-ray detection control method, system, device and product, and the method comprises the steps: obtaining the external contour data of a to-be-detected vehicle collected by a three-axis measurement device when the to-be-detected vehicle enters a detection region, the external contour data at least comprises the vehicle terrain clearance; identifying the vehicle type of the to-be-detected vehicle according to the external contour data of the to-be-detected vehicle; according to the identified vehicle type, the voltage grade of an X-ray source is matched, and different vehicle types correspond to different bias voltage modes; according to the method, the starting time of the X-ray source is determined, the X-ray source is driven to emit beams according to the matched voltage level in response to the starting time, and the to-be-inspected vehicle is scanned, so that the intelligent level of vehicle security inspection is remarkably improved through refined three-axis measurement and hierarchical voltage control.

The present invention provides a cold cathode X-ray tube for brachytherapy, relating to the technical field of nanomaterial X-ray tube design and use. The X-ray tube includes a tube shell, an anode material and a cathode material disposed within the tube shell, and uses carbon nanotubes as the cathode material. The anode material is connected to a micro-heat dissipation structure, and the cathode material is connected to an external power supply. A grid is also provided near the cathode. By adjusting the current and voltage, dwell time, and dwell position, the X-ray beam intensity, beam direction, and X-ray source position can be adjusted, thereby achieving brachytherapy. The present invention overcomes the shortcomings of the prior art and designs a radioactive source for use in the human body. The angle and energy of the X-rays emitted by the tube can be selected and adjusted, and can significantly improve and control the radiotherapy of various malignant tumors.