52 results about "Sample rotation" patented technology

The invention relates to the technical field of CT detection, and discloses a plane CT fan-beam projection filtering back projection reconstruction method and CT detection device.The method comprises the steps that S1, tilt geometric configuration parameters are determined according to the distance from a detector to a rotation center and a tilt angle, a sample rotating table is controlled to rotate, and the detector is triggered at each rotation angle to collect first projection data; s2, calculating a global three-dimensional coordinate of a detector pixel point under each rotation angle, and generating second projection data; s3, performing frequency domain filtering according to the thickness of the sample and the second projection data to obtain third projection data; and S4, calculating a ray intersection point coordinate from a reconstructed slice pixel point to a detector plane, and reconstructing the third projection data according to the ray intersection point coordinate to obtain a tomographic reconstruction image.According to the method, high-frequency detail features are reserved while noise is suppressed, the problem that a traditional fixed filtering kernel parameter is poor in adaptability to different samples is avoided, and the method is suitable for being applied to the field of image reconstruction. Therefore, high-precision three-dimensional imaging is realized.

The invention relates to the field of optics, and provides a device and a method for measuring an angle resolution polarization Raman spectrum. The angle resolution polarization Raman spectrum measuring device comprises a connecting mounting plate which is used for mounting the measuring device in a light path of a Raman spectrometer; the rotary mounting seat is fixed on the connecting mounting plate; the angle rotary table is arranged in the rotary mounting seat and is driven by the driving part to rotate; and the wave plate is mounted on the angle turntable and is used for changing the polarization directions of the incident laser and the Raman signal light through the wave plate. The angle resolution polarization Raman spectrum measuring device solves the problem of rotation and displacement of tiny samples, ensures in-situ and continuous measurement of small-size samples such as two-dimensional materials and nanoparticles, and compared with a traditional manual rotation wave plate mode, the angle setting error is reduced, the laser polarization direction is ensured to be adjusted according to preset precision, and the measurement accuracy is improved. And the high-resolution polarization measurement requirement is met.

The invention discloses a device for testing illumination uniformity of fluorescent glass, and relates to the technical field of fluorescent glass illumination. The device comprises a carrying platform module, a laser light source module, an optical collection module and a spectral analysis module, the carrying platform module is used for carrying and fixing a fluorescent glass sample to be detected and driving the fluorescent glass sample to rotate; the laser light source module is used for generating and outputting an excitation light beam to act on the fluorescent glass sample, and a light emitting path is adjustable; the optical collection module is used for collecting an optical signal emitted by the fluorescent glass sample; and the spectral analysis module is connected with the optical path of the optical output port of the optical collection module and is used for receiving and analyzing the optical signal. The device is simple in structure, controllable in cost, convenient to operate, capable of achieving high-spatial-resolution automatic scanning, high in measurement precision and good in repeatability.

The invention discloses a laminated scanning imaging system and an imaging algorithm based on inclined illumination multi-angle rotation fusion, and relates to the technical field of computational optical imaging. A sample is obliquely illuminated and scanned through a coherent light source, and a series of diffraction information of the sample to be detected in the illumination direction is obtained; and then rotating the angle of the sample to change the illumination direction, repeating the steps to obtain a series of diffraction information at multiple angles, and based on the diffraction information at multiple angles, performing reconstruction through an iterative algorithm to obtain a complex amplitude image of the to-be-detected sample. According to the invention, by means of inclined illumination and sample rotation, multi-angle diffraction information of the sample to be measured is fused in an algorithm, and a high-resolution reconstruction result is obtained. Meanwhile, the technology does not require height superposition of scanning positions at different angles, and has very strong experimental feasibility.

A multifunctional sample stage for a small-angle X-ray scattering (SAXS) spectrometer relates to the field of X-ray scattering experimental technology. The multifunctional sample stage includes a rotating device, a loading device, and a controller. The rotating device includes a base, a ring frame, a ring rack, gears, and a first driving device. The loading device is fixedly connected to the rack. The loading device includes a fixing frame, a sample tray, a rotating shaft, a second driving device, and a tensioning device for fixing the solid sample to be tested. The tensioning device includes a fixing device, a screw, and a third driving device. One end of the screw has a left-hand thread, and the other end has a right-hand thread. The left-hand and right-hand threads are respectively connected to two fixing devices located on different sample trays and corresponding to each other. This device can simultaneously control the sample rotation angle and tensile force variables, enabling in-situ research on the structural evolution and property relationships of materials during complex processing under stress changes, and can simultaneously hold multiple solid samples to be tested.

The invention discloses a concentric ring roll sample table for a wide-angle X-ray diffractometer and a use method, and belongs to the technical field of X-ray diffraction analysis equipment.The concentric ring roll sample table comprises a base and a concentric ring sample table body arranged on the base, and the concentric ring sample table body comprises an external supporting seat and an internal rotating circular ring sleeve; the rotary circular ring sleeve is rotatably connected to the supporting seat through an angle adjusting mechanism, and the rotation axis of the rotary circular ring sleeve is configured to coincide with the direction of an incident X-ray beam, so that a sample fixed on the rotary circular ring sleeve can roll and rotate around an incident light path. Through the unique concentric ring design, it is ensured that the rotation axis of a sample coincides with an X-ray light path, the position of a measured point of the sample is constant in the rotation process, the side inclination range of 60 degrees is achieved through cooperation with the fine adjustment bolt, the measurement blank between vertical transmission and grazing incidence is filled, and the measurement precision is improved. And a key tool is provided for all-dimensional structure characterization of anisotropic materials.

The invention relates to a sampling device capable of automatically replacing multiple sampling rods, which comprises a shell, the shell is provided with a shell opening for the sampling rods to enter and exit, the shell is internally provided with a rotatable turntable, and the turntable is controlled by a turntable rotation driving device to rotate; a plurality of cavities which are uniformly distributed and are parallel to a rotating shaft of the rotating disc are formed in the rotating disc, openings of the cavities face the opening of the shell, sampling feeding devices used for controlling the sampling rods to move along the cavities and sampling rotating devices used for controlling the sampling rods to rotate are arranged in the cavities, and a rotating positioning device is arranged on the rotating disc; the rotary positioning device is used for controlling the rotary table rotary driving device, so that the cavity opening corresponds to the shell opening after the rotary table rotates each time; and the turntable rotation driving device, the sampling feeding device, the sampling rotation device and the rotation positioning device are all connected with a master controller. According to the sampling device capable of automatically replacing the multiple sampling rods, the multiple sampling rods can be automatically replaced after one-time positioning, and the sampling work of the multiple sampling rods is carried out.

A sample stage (104) is tiltable about a tilt axis (T) and rotates a sample (106) about a sample rotation axis (C) orthogonal to the tilt axis (T). A plurality of ion sources (101, 107, and 110) are adjusted by ion source movable mechanisms (102, 108, and 111) to which the ion sources (101, 107, and 110) are attached such that eccentricities, each of which is a distance between an ion beam center axis and the sample rotation axis (C) on a surface of the sample, are different from each other. A control unit (113) performs milling by irradiating the sample, which is rotated about the sample rotation axis (C) by the sample stage (104), with an unfocused ion beam from each of the plurality of ion sources (101, 107, and 110).

The utility model provides a sample carrier for a failure analysis sample and a preparation device of the sample carrier. The sample holder comprises a sample holder body, a rotating part and a shell. The bottom surface of the sample seat is used for fixing a sample, the rotating part comprises a stator and a rotor, the rotor is connected with the sample seat, the shell is filled with buffer liquid, and the shell is connected with the stator. And through the arrangement of the buffer liquid, when the grinding pressure is suddenly increased, the buffer liquid can absorb suddenly changed pressure, the buffer effect is achieved, and the situation of excessive layer removal is avoided. The buffer liquid comprises the elastomer capsule and the silicone oil with the preset volume ratio, so that the effective grinding pressure can be set to ensure that a certain specific layer is removed, and the removal requirements of different film layers are met. Through the arrangement of the rotating part, the sample seat is driven to rotate by utilizing the linear velocity difference generated by different distances from the axis during grinding, so that the grinding time of different positions of a sample is equal to the number of contacted grinding materials, and uniform layer removal is realized.

The invention relates to the technical field of sample detection, and discloses a high-flux fertilizer production sample detection device which comprises a sample detection supporting and positioning mechanism, the bottom end of the inner wall of the sample detection supporting and positioning mechanism is rotationally connected with a limiting mechanism, the middle position of the limiting mechanism is connected with a sample positioning mechanism, and the limiting mechanism comprises a rotating frame; through the arrangement of the sample positioning mechanism, a sample reagent bottle is synchronously controlled to lift and rotate, so that placement, stirring positioning, detection positioning and lifting operation of a sample are coordinated; through the synergistic effect of the sample positioning mechanism and the sample rotation control mechanism, the synchronous control of lifting and rotation of the sample reagent bottle is realized; the design ensures that the sample can be immediately detected after being stirred, and the problems of non-uniform component distribution and inaccurate temperature caused by gravity action and environment temperature change in waiting and moving processes are avoided, so that the homogeneous state of the sample is kept, and the repeatability and accuracy of a detection result are improved.

The application discloses an ultrasonic and laser in-situ composite friction test device and a use method thereof, which comprises a laser collimator, an ultrasonic vibration device, a diamond indenter, a sample rotating platform, a friction performance detection device, a rack and a base installed at the bottom of the rack, the friction performance detection device is installed on the rack, the object table is fixedly installed on the sample rotating platform, the sample rotating platform is installed on the base, the laser collimator is installed on the rack through the laser pose precision control device, the light outlet of the laser collimator is opposite to the ultrasonic vibration device, the diamond indenter is fixedly installed with the ultrasonic vibration device, and the diamond indenter is opposite to the object table; after the laser beam passes through the laser collimator and the ultrasonic vibration device, the laser beam is transmitted through the diamond indenter and acts on the surface of the sample, and the heating area is detected through the friction performance detection device, so that the composite friction performance of the sample is evaluated.

This invention discloses a method for characterizing the interface orientation of polycrystalline materials, belonging to the field of crystallography and materials characterization technology. The method involves depositing a protective layer on the target interface using a focused ion beam followed by etching, and acquiring scan images of the sample surface and the etched surface. The angles between the interface traces on the sample surface and the etched surface and the sample coordinate system are measured. After manually tilting and correcting the angle measured on one side, the interface normal is calculated using the cross product of the direction vectors of the traces on the sample surface and the etched surface. This method eliminates the need for multiple sample rotations, acquiring all required data in a single scan, thus significantly improving characterization efficiency. It is suitable for large-scale automated interface orientation measurement, providing strong technical support for the study of the microscopic mechanisms of polycrystalline materials.

The invention discloses a rock slice orthogonal polarized video-to-picture conversion method and system based on video tracking, and relates to the cross technical field of slice identification and computer vision, and the method comprises the steps: collecting rock slice sample rotation polarized video data; a CoTracker network is adopted to track a plurality of sample points of the video data; fitting the dynamic motion trails of the sample points; calculating an instantaneous rotation angle value of the rock slice sample; and generating a rock slice sample key angle polarization diagram. According to the invention, based on a collected variable-angle rock slice microscopic video under orthogonal polarization, a CoTracker deep learning video tracking technology is applied to a polarization microscope microscopic examination sample rotation video, and the rotation angle of the sample is intelligently analyzed by using an optical flow tracking technology; therefore, the microscopic examination video of the rock slice polarizing microscope is converted into the rock slice sequence image under the multi-angle and multi-light-source condition, and technical support is provided for generalization of a sample library.

Provided is a correction amount determination device, method, recording medium, and jig. A correction amount determination device (300) includes: a diffraction data storage section (310) that stores diffraction data obtained by irradiating a standard sample that is an aggregate of crystal particles that are isotropic and free of strain with X-rays, the diffraction data including a combination of a diffraction angle of the irradiated X-rays with respect to a sample rotation angle and a sample surface height; a correspondence relationship determination section (320) that determines a first correspondence relationship based on the diffraction data; and a correction amount determination section (330) that determines a correction amount of the sample surface height with respect to a desired sample rotation angle and diffraction angle by a first function.

The utility model discloses a kind of water-based paint weatherability detection's cycle exposure tester, including test box, the inside of test box is provided with light source system and spraying system;Further include: rotatable support, inside the box is installed, for driving sample rotation;Sample fixture assembly, rotation is installed in the top of rotatable support, sample fixture assembly is connected with rotatable support by angle adjusting mechanism, sample fixture assembly is configured to automatically change the included angle of sample and horizontal plane by angle adjusting mechanism;Collection analysis unit, it includes conductivity tester collection pool and conductivity sensor.The utility model provides a kind of water-based paint weatherability detection's cycle exposure tester, by setting angle adjusting mechanism, it can automatically drive sample to switch between "accumulation water test" and "aging test" two states, truly simulates the stress and aging environment of outdoor coating under different inclination, improves the authenticity of test data.

The invention discloses a method and a device for detecting two-dimensional non-uniform grating parameters on line. The method comprises the following steps: sequentially installing a laser generating module for emitting a detection laser beam, a to-be-detected sample rotating and fixing module with a to-be-detected sample, a laser receiving module with an industrial camera for receiving a Talbot image, a stepping motor module and an acquisition and display module; the contrast ratio is measured through the industrial camera and is output to the acquisition display module; and the acquisition display module receives the contrast ratio, generates a contrast ratio curve, and calculates the grating constant of the first grating of the to-be-detected sample, the grating constant of the second grating of the to-be-detected sample, and the included angle between the first grating and the second grating of the to-be-detected sample. According to the invention, the dimension reduction processing of the two-dimensional contrast matrix is realized, the difficulty is reduced, and the precision is improved.

In the present invention, a holding unit holds a plurality of optical elements. A drive unit drives the holding unit to dispose a specific optical element of the plurality of optical elements held by the holding unit in an optical path for observing a sample. A rotary operation unit receives a rotary operation and outputs an operation signal. A control unit obtains a rotation direction and a rotation amount of the rotary operation unit on the basis of the operation signal, selects a specific optical element from the plurality of optical elements on the basis of the rotation direction and the rotation amount, and controls the drive unit to dispose the specific optical element in the optical path.

The invention provides a coal rock sample preparation device and an intelligent discrimination method, and belongs to the technical field of coal rock physical property testing. The device comprises a constant temperature and humidity chamber, a humidity control system and a sample processing and weighing system. An electric lifting platform in the sample processing and weighing system realizes separation of a sample vessel and a sample rotating disc during weighing through lifting action, so that the weighing precision is ensured. The central control and data acquisition system manages full-automatic'lifting-rotating-descending-weighing 'circulation through a finite-state machine model, and adopts an intelligent algorithm to automatically judge whether a sample reaches moisture balance or not by judging whether continuous multiple mass changes of the sample are smaller than a preset threshold value or not. The method is implemented in a central control and data acquisition system. According to the invention, the defects of low efficiency, easy interference of precision, strong subjectivity of equilibrium state judgment and the like in the traditional method are overcome, and batch, automatic and intelligent preparation of the coal rock equilibrium moisture sample is realized.

The application provides a test system and a test method, a computer device and a storage medium. The test system comprises a light source device, which emits a test light beam and exposure light beams with different exposure doses; a sample adjusting device, which comprises a sample placing table, a lifting mechanism and a rotating mechanism. The sample placing table is connected with the lifting mechanism or the rotating mechanism. The lifting mechanism is used to drive the to-be-tested sample to lift to adjust the exposure position. A detection device is used to detect the transmitted light passing through the to-be-tested sample. A control device is used to control the lifting mechanism to lift, so that different exposure regions of the to-be-tested sample correspond to the exposure light beams with different exposure doses. The control device is also used to control the rotating mechanism to rotate to drive the to-be-tested sample to rotate. The detection device is used to measure the energy change information of the transmitted light passing through the different exposure regions of the to-be-tested sample with the rotation angle in the process of sample rotation. The application can realize the test of the transmitted light of the to-be-tested sample without changing the angle of the light source device, and improves the test efficiency and precision.

The utility model discloses a kind of silicon steel sheet detection devices, comprising: rack;Hoisting module, it is placed on the rack;Visual inspection module, it is installed on the hoisting module, for whether the notch of visual inspection silicon steel sheet sample exists defect, including visual inspection component and drive the first driving component of visual inspection component along silicon steel sheet radial movement;Sample positioning module, it is installed on the hoisting module, for positioning to silicon steel sheet sample and drive silicon steel sheet sample rotation, including driving wheel mechanism, with the driving wheel mechanism opposite setting driven wheel mechanism and drive the second driving component of driven wheel mechanism movement, the silicon steel sheet sample is clamped between driving wheel mechanism and driven wheel mechanism.The silicon steel sheet detection device provided by the utility model can reduce manual labor intensity and improve detection efficiency.

The invention provides an electron beam inclination angle quantification method, electronic equipment and a product. The method for quantifying the inclination angle of the electron beam comprises the following steps: respectively acquiring a first image and a second image of a pyramid-shaped sample with a three-dimensional rotation angle through a scanning electron microscope; enhancing edge information of the first image and the second image by using a differential filter, and extracting a key point set through a binarization method; extracting feature straight lines in the first image and the second image from the key point set; constructing a target function by combining the three-dimensional rotation matrix and the feature straight line of the first image, and calculating the three-dimensional rotation angle of the pyramid-shaped sample through a Nelder-Mead algorithm; a linear equation set is constructed by combining the tilt transformation matrix and the characteristic straight line of the second image, the two-dimensional tilt angle of the electron beam is calculated through a least square method, geometric errors caused by sample rotation can be eliminated, and interference is eliminated for quantifying the tilt angle of the electron beam; and the calculation precision and stability of the inclination angle are effectively improved.

The utility model discloses biological activity detection equipment for a bio-based material, which relates to the technical field of biological activity detection and comprises a workbench, a sample rotary placement component and a detection rotary component are arranged at the upper end of the workbench, and the detection rotary component is arranged on the upper portion of the sample rotary placement component. The left side of the upper end of the C-shaped plate is fixedly connected with a stepping motor; the output end of the stepping motor is fixedly connected with a rotating shaft; the lower end of the rotating shaft is fixedly connected with a half gear; the outer surface of the half gear is in meshed connection with a full gear; the upper end of the rotating plate is rotatably connected with the output end of an electric push rod and the upper end of the electric push rod is fixedly connected with a C-shaped plate. According to the utility model, the detection head on the biotoxicity detector can be timely rotated to be cleaned, so that the phenomenon of inaccurate subsequent detection degree of the detection head which is used for many times is prevented, and the detection accuracy is improved.

The application discloses a permanganate index self-matching air pressure detection system and method, belongs to the technical field of environmental monitoring, and comprises a digestion bottle, a preparation platform and a detection platform. The preparation platform comprises a sample rack, an automatic reagent adding system and an automatic cap screwing system. The detection platform comprises a base, a sample rotating system and a spectrophotometer. The digestion bottle is a bottom-protruding cylindrical structure, and comprises a digestion part, a to-be-detected part and a pressure regulating bottle cap. The detection method comprises determining an optimal detection wavelength, establishing a calibration reagent curve, establishing a calibration curve of the permanganate index, water sample determination, correcting the curve through the change rate of the spectrophotometer signal twice and the like. The application can guarantee the accuracy of the colorimetric result, reduce the error generated in the colorimetric process, realize the automation of sample loading, digestion and colorimetry, and improve the detection efficiency.

The invention relates to the technical field of electromagnetic compatibility, and provides a radiation stray test method, device, medium and equipment at a limiting temperature, and the device comprises a darkroom, a frame body assembly, a rotating assembly, a heat preservation box, a temperature control assembly, a receiving antenna, a radio frequency switch assembly, and a frequency spectrograph. The rotating assembly is arranged on the frame body assembly, the heat preservation box is arranged on the frame body assembly, the rotating part in the rotating assembly is embedded into the heat preservation box, a to-be-detected sample placed on the rotating part can rotate along with the rotating part, and after the temperature in the heat preservation box is adjusted to the target temperature, the to-be-detected sample can be detected. The rotating assembly is driven to rotate so as to drive a to-be-tested sample on a rotary table in the heat preservation box to rotate, the to-be-tested sample emits a radio frequency signal when rotating by 360 degrees, the temperature in the heat preservation box can be adjusted, and after the temperature in the heat preservation box is adjusted to the target temperature, the to-be-tested sample can be detected. And driving the rotating assembly to rotate so as to drive the to-be-tested sample on the rotary table in the heat preservation box to rotate, thereby analyzing the radiation stray data of the to-be-tested sample at the target temperature.

The present application relates to sample carrying and detection auxiliary equipment technical field, disclose a kind of interference suppression rotating sample loading device for bottled sample.The device includes rack, rotating sample loading component, drive assembly and fixed component.The device can also be used with laser and detector arranged on the both sides of bottled sample, the incident beam emitted by laser can be obliquely arranged relative to the axis of bottled sample, to reduce the overlapping degree of different transmission beams in detection area;Vibrator can also be arranged at detector, to further improve the interference suppression effect.The present application rotates bottled sample, so that different circumferential regions enter detection path in turn, signal fluctuation caused by uneven bottle wall thickness, surface state difference and local curvature change is averaged, so as to reduce interference, improve stability, repeatability and accuracy in detection process.

The invention discloses a steel rail polishing simulation testing machine and a testing method, and the steel rail polishing simulation testing machine comprises a rack, a millstone module, a feeding module, an operation module and a control module. The millstone module is rotationally connected to the rack and used for polishing the simulated steel rail sample. The feeding module comprises a first driving device and a guiding device and is used for driving the sample to move. The operation module comprises a clamping device and a second driving device and is used for driving the sample to rotate. The control module is in communication connection with all the modules and used for controlling the grinding rotating speed, the feeding speed and the rotating speed. A small-scale simulation steel rail sample is adopted to replace a full-scale steel rail section, the test cost is reduced, and accurate reproduction of polishing parameters is achieved through the control module. The same polished sample can be detached and transferred for a service performance test, the correlation between polishing process parameters and the long-term service performance of the steel rail is established, and the research blank of the wheel-rail friction wear simulation service test in the steel rail polishing direction is filled.

The invention belongs to the technical field of nondestructive testing and ultrasonic imaging, and particularly relates to an acoustic microscope imaging device and method.The device comprises a control module, a rotating platform, an ultrasonic probe, a radial feeding mechanism and an angle sensing unit, and the rotating platform, the ultrasonic probe, the radial feeding mechanism and the angle sensing unit are connected with the control module. The angle sensing unit is arranged on the rotating platform and used for collecting rotating angle information of the rotating platform; the ultrasonic probe is fixed on the radial feeding mechanism and is positioned right above the sample to be detected; the control module is used for controlling the radial feeding mechanism to drive the ultrasonic probe to move multiple times in the radial direction of the rotating platform, controlling the rotating platform to drive the to-be-tested sample to rotate to form a circular track, and controlling the ultrasonic probe to scan and collect echo signals of the to-be-tested sample on the circular track in the rotating process. And generating a plane image of the to-be-tested sample. According to the invention, the ultrasonic signal stability, the imaging accuracy and the scanning efficiency are improved.

The invention discloses a photoacoustic imaging method and system based on dynamic scanning and rotation fusion, which combines a cylindrical line focused ultrasonic transducer, an MEMS micro-scanning platform, a Z-axis motor and sample rotation fusion, realizes equivalent extension of a receiving angle and suppression of artifacts on the premise of keeping miniaturization and low cost of the system, and improves the imaging precision. A flexible scanning strategy and self-adaptive acquisition can be realized, the imaging definition, the quantitative accuracy, the experiment efficiency and the adaptability are improved, and the method is particularly suitable for small animal angiography, superficial tumor boundary identification, intraoperative local tissue structure visualization and other application scenes. Besides, a multi-angle image registration and fusion algorithm is adopted, and through strategies such as pixel weighting, frequency domain fusion or mutual information optimization, the edge of the fused image is clearer, artifacts and noise are obviously weakened, and the signal-to-noise ratio and the contrast ratio are obviously improved.

The application discloses a photoelectrochemical automatic detection device for detecting copper ions based on titanium dioxide doped biomass carbon, relates to the field of photoelectrochemical detection, and uses prepared TiO2@NSi-C nanocomposite material as a detection electrode, and uses the detection in a detection device, and further comprises a shell, a light-emitting and light-collecting device, a base, a sample changing device and the detection device; the base is divided into several areas, the outer side of the base is provided with the shell, the sample changing device is arranged on the inner side of the base, and the light-emitting and light-collecting device and the detection device are arranged on the shell; wherein, the light-emitting and light-collecting device is used for providing required light for the sample changing device to realize electrochemical reaction of a sample; the detection device is used for detecting current change of the sample in the sample changing device; and the sample changing device is used for rotating the sample to a light receiving position. The device can realize automatic light-emitting and light-collecting, automatic sample changing and detection, and cleaning and liquid discharge after detection.