18results about How to "Improve scan performance" patented technology

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 relates to a CT reconstruction method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring a current reconstruction interval, and determining a reconstruction strategy according to the current reconstruction interval; under the condition that the reconstruction strategy is a first reconstruction strategy, performing CT reconstruction on the acquired projection data by adopting a coarse reconstruction mode when the projection data of preset interval duration is acquired to obtain a first CT reconstruction image, and displaying the first CT reconstruction image in a display interface in real time; performing CT reconstruction on the projection data by adopting a fine reconstruction mode to obtain a second CT reconstruction image, and storing the second CT reconstruction image; wherein the reconstruction cost of the coarse reconstruction mode is lower than that of the fine reconstruction mode. By adopting the method, the CT scanning effect and the reconstruction precision can be improved.

The utility model discloses a fixed table for detecting a die body, which comprises a bottom plate, a supporting seat, a rotating table and a die body fixing assembly, the supporting seat is arranged on the bottom plate, the rotating table is rotatably arranged on the supporting seat, a supporting disc is arranged on the rotating table, the die body fixing assembly is rotatably arranged on the supporting disc, an annular guide groove is arranged in the supporting seat, and the annular guide groove is arranged in the supporting seat. An annular guide groove is formed in the rotating table, an annular guide rail matched with the annular guide groove is arranged on the rotating table, the annular guide groove guides and limits the annular guide rail, a positioning screw is in threaded connection with the lower end of the interior of the rotating table, the lower end of the positioning screw abuts against the annular guide groove, and the rotating table can be positioned through the positioning screw. The utility model relates to the technical field of medical equipment, in particular to a fixing table for detecting a die body, which is convenient to disassemble and assemble the die body and is convenient to adjust.

The embodiment of the invention relates to an optical scanner. The optical scanner comprises a polarizing beam splitter, a wave plate and an optical phased array chip. Wherein the polarizing beam splitter is used for dividing incident light source light into first laser with a first polarization state and non-working light with a second polarization state, reflecting the first laser and transmitting the non-working light, and the first polarization state is different from the second polarization state. The wave plate is located on the reflection light-emitting side of the polarizing beam splitter and used for receiving the first laser and emitting second laser with a third polarization state different from the first polarization state and the second polarization state. And the optical phased array chip is used for receiving the second laser and emitting reference light, and the optical phased array chip is also used for changing the emitting angle of the reference light. The embodiment of the invention further relates to a laser detection system with the optical scanner and an automatic driving vehicle applying the laser detection system.

The invention discloses a slide clamping device for a pathological slice scanner, and relates to the field of slide clamping devices. The invention comprises a base, a clamping assembly, a cleaning assembly, a drying assembly, a height adjustment assembly, a transmission assembly, and; the clamping assembly is arranged on the top of the base, the cleaning assembly and the drying assembly are arranged on the base and the clamping assembly, the drying assembly is located beside the cleaning assembly, the height adjustment assembly is arranged below the base, the transmission assembly is connected with the height adjustment assembly and the clamping assembly, and moves to the center of the base through a moving plate, indirectly driving the slide to rise, when clamping slides of different sizes, when clamping a slide of a larger size, the rotating clamping block rotates with a smaller amplitude, the height of the slide rising is also smaller, the distance between the moving plate and the scanner will be smaller, a larger field of view will be scanned, the scanning efficiency will be improved, and the scanning effect will be improved.

The utility model provides a three-dimensional scanner with an adjustable scanning angle, which relates to the technical field of scanners and comprises a movable mechanism, the movable mechanism comprises a connecting column fixedly connected to one side of a support, the lower end of the connecting column is fixedly connected with a fixing block, the middle of the lower end of the fixing block is fixedly connected with a connecting block, and the lower end of the connecting block is movably connected with a ball. The outer wall of the lower end of the ball is fixedly connected with a connecting rod, the lower end of the connecting rod is fixedly connected with a sliding block, the lower end of the sliding block is fixedly connected with a scanning device, and one side of the fixing block is movably connected with a first transmission mechanism and a second transmission mechanism. According to the utility model, the problem that the scanning requirements of objects with complex shapes and diversified sizes are difficult to meet because the conventional scanners mostly adopt a fixed-angle or limited-angle scanning mode is solved. And the design of a fixed scanning angle is easy to cause a scanning blind area, so that part of key detail information is lost, and the precision and integrity of the model are influenced.

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 present invention relates to a phased array antenna, an array unit and a scanning angle adjustment method, wherein a first heterogeneous array element is arranged outside a first outermost array element so that the phase of the first heterogeneous array element lags behind the phase of the corresponding first outermost array element, thereby making the first phase plane of the first heterogeneous array element and the corresponding first outermost array element tilted relative to the equal phase plane and arranged at an angle. Since the maximum beam pointing direction is always perpendicular to each phase plane, the maximum beam pointing direction of the equal phase plane is perpendicular to the direction of the equal phase plane, and the maximum beam pointing direction of the first phase plane is perpendicular to the direction of the first phase plane. In combination with the first phase plane being arranged at an angle with the equal phase plane, the maximum beam pointing directions of the two phase planes are in different directions, thereby improving the scanning capability of the array unit.

The utility model relates to the technical field of scanners, in particular to a suspension type data scanner. Comprising a suspension frame, an electric slide rail, a lifting rod, an infrared scanner body, a placing platform and an adjusting assembly, the electric slide rail is installed on the suspension frame, the lifting rod is installed on a slide block of the electric slide rail, the infrared scanner body and the placing platform are both connected to the lower end of the lifting rod, and the placing platform is fixedly connected with the infrared scanner body. The adjusting assembly is used for adjusting the placement angle of data and comprises rotating plates, hinge rods and magnets, the rotating plates are symmetrically and rotatably connected to the placement platform, the hinge rods are rotatably connected to the bottom surfaces of the rotating plates, the magnets are connected to the lower ends of the hinge rods, and the magnets are attracted to the inner bottom surface of the placement platform through magnetic force. According to the utility model, the lifting rod is controlled to lift through the electric slide rail, so that the infrared scanner body can be driven to lift, the infrared scanner body can be prevented from occupying the desktop space of an office desk, and manual use is facilitated.

The invention relates to the technical field of CT (Computed Tomography) imaging devices, in particular to a low-dose cold cathode imaging device, which comprises a shell; an imaging unit; a power supply unit; a detection unit; the control unit is used for determining the excitation moment of X rays according to the distance between the cold cathode X-ray tube assembly and a to-be-imaged body, determining the excitation voltage of the cold cathode X-ray tube assembly at the excitation moment according to the temperature of air around the cold cathode X-ray tube assembly in the shell, and determining a corresponding adjusting mode according to the distribution condition of feature nodes of a scanned image. Comprising the following steps: screening by adopting different time intervals or carrying out training restoration processing on the scanned image. According to the invention, the scanning effect is enhanced and the scanning image is optimized.

The utility model relates to the technical field of slide shooting, disclose a shooting anti shake mechanism of slide scanning imaging device, including the shell, the inner wall of shell is provided with stabilizing mechanism, the stabilizing mechanism includes the mounting panel, the inner wall fixed connection of mounting panel's outer wall and shell, the top of mounting panel both sides are all set up with a plurality of stable grooves, the inner wall sliding connection of stable groove has the sliding frame, the bottom both sides of sliding frame are all fixedly connected with a plurality of stabilizer bars, the outer wall sliding connection of stabilizer bar has the camera. In the utility model, the mounting panel is equipped with stable groove, and the threaded shaft one is rotated under the drive of servo motor one, makes the stable left and right sliding of sliding frame in stable groove, after servo motor two starts, threaded shaft two rotates, and the transmission camera slides on the stabilizer bar, and this structure ensures the stability and flexibility of scanning movement, reduces the shaking, improves the scanning effect.

The invention relates to the technical field of 3D printing scanning and sampling, and discloses a 3D printing orthopedic limb scanning and sampling device which comprises a supporting table, a supporting mechanism and a scanning mechanism are arranged above the supporting table, and the supporting mechanism is located below the scanning mechanism; the supporting mechanism comprises an adjusting part and a supporting part. The distance between the two connecting plates can be adjusted through the supporting mechanism and the adjusting part, limbs of different lengths can be conveniently supported, the limbs of different shapes can be clamped and fixed through the supporting part, the phenomenon that the limbs of a person are tired and shaken in the scanning process due to the fact that a suspension is in the air during limb scanning is avoided, the scanning precision is improved, and the working efficiency is improved. Meanwhile, the application range of the 3D printing orthopedic limb scanning and sampling device is widened; the clamping plates are arranged to be arc-shaped, so that the limbs can be clamped and fixed more conveniently, and the scanning effect is improved; and through sponge pads, the situation that the limbs are injured due to continuous extrusion force of the clamping plates is prevented, and protection on the limbs is improved.

The present invention discloses a portable handheld mobile intelligent terminal, which relates to the technical field of code scanning intelligent terminals. It solves the problem that when the device terminal is actually used, the terminal device for scanning and the handheld part are generally integrated, which is inconvenient to use in some specific environments, and the use environment is relatively limited and the cost is high. At the same time, it solves the problem that it is difficult to handle large quantities of code scanning in a timely manner. The portable handheld mobile intelligent terminal includes a handheld intelligent terminal, a handheld positioning component and a front-end code scanning system. The handheld intelligent terminal is installed inside the handheld positioning component, and the bottom is electrically connected to the front-end code scanning system. In the present invention, different usage modes can be adopted according to the use environment and requirements to achieve high-definition, accurate and efficient scanning operations. At the same time, when scanning a large number of single number barcodes and two-dimensional codes, the module for scanning the code can operate independently to achieve continuous code scanning operations.

The invention discloses a database parallel equivalent connection method based on a column storage format. The database parallel equivalent connection method comprises the steps that a data table with the minimum data size is selected from a plurality of involved data tables to serve as a basic table; hash is carried out on the basic table according to a Hash function, data in the basic table is divided into a plurality of fragments according to a Hash result, each fragment is numbered and allocated to a plurality of sub-tasks, and a sub-Hash Table with a connection field value list as Key and a row position information list as Value is constructed in a concurrent mode; performing the same operation on the to-be-connected data table, and concurrently performing Hash detection; and according to a position information sequence pair obtained by Hash detection, splicing connection field values of corresponding position information of the basic table and the data table to be connected to obtain a spliced result, and taking a set of all the spliced results as a final connection result.

This application relates to the field of office equipment technology, and more particularly to a paper feeding roller, a paper feeding mechanism, and office equipment. The paper feeding roller disclosed in this application is applied to a paper feeding mechanism and includes an outer ring portion and a shaft portion. The outer ring portion is sleeved on the shaft portion and protrudes from the outer peripheral surface of the shaft portion. At least a portion of the outer ring portion is configured to abut against the paper, wherein the length of the portion of the outer ring portion abutting against the paper along the axial direction of the shaft portion is 5 mm to 30 mm. By reducing the abutment length between the outer ring portion and the paper along the axial direction of the shaft portion, the pressure applied to the paper by the paper feeding roller in the paper feeding mechanism is more concentrated. When papers of different sizes enter the paper feeding mechanism, the paper feeding roller can ensure that the pressure is concentrated on the paper, especially in the middle of the paper along its width direction, thereby effectively avoiding the problem of paper skewing caused by the offset of the pressure application point.

The utility model relates to three-dimensional modeling auxiliary equipment. Comprising a cabinet body with a window in the top, side supports are arranged on the two sides of the cabinet body, an arc-shaped rail is installed between the two side supports, a movable base is installed on the arc-shaped rail, a scanner is installed at the bottom of the movable base, a frame base is installed in the cabinet body, and an annular frame is installed at the top of the frame base. A lifting objective table and a rotation driving device for driving the lifting objective table to rotate are mounted on the annular frame; the rotary driving device is used for driving the frame base to rotate in a rotary manner; and the swing driving device is used for driving the annular frame to swing. The three-dimensional modeling auxiliary equipment provided by the utility model has the advantages that the operation efficiency of three-dimensional scanning is improved, and the scanning effect is improved.

The invention discloses a C / Ku double-frequency common-caliber phased array scanning antenna, and relates to the technical field of scanning antennae, the C / Ku double-frequency common-caliber phased array scanning antenna comprises a Ku frequency band patch and a C frequency band antenna oscillator, and the Ku frequency band patch and the C frequency band antenna oscillator are distributed on a perforated printed board in a square array according to the caliber surface; all the C-frequency-band antenna oscillators are arranged in the same direction and are perpendicular to the polarization direction of the ku-frequency-band microstrip patch, the Ku-frequency-band patch and the C-frequency-band antenna oscillators both adopt a coaxial feed form, and the Ku-frequency-band patch adopts a coupling slot form to radiate the patch; in the strip line polarization direction of the Ku frequency band microstrip patch, a dummy dummy C oscillator without excitation is arranged between two adjacent C frequency band antenna oscillators in each row and each column of C frequency band antennas. According to the invention, the microstrip patch of the ku frequency band and the oscillator antenna of the C frequency band are reasonably arranged and are in the same spatial range, and a dummy encryption decoupling technology is adopted, so that the dual-frequency antenna array planes with different physical forms are integrated, and the coupling effect is reduced.