8results about How to "Reduce operational technical difficulty" patented technology

The invention discloses a single-scale field calibration method, and belongs to the technical field of camera calibration, and the method comprises the steps: obtaining a calibration image through a linear scale and a binocular camera; relative orientation is carried out on each camera, and internal and external parameter initial values of the cameras are obtained: through relative orientation, the relative position and attitude relation between the cameras in the binocular camera is determined, a local coordinate system with the reference camera as a reference is established, and the internal and external parameter initial values of the cameras are obtained by using the coplanar condition between the cameras; performing absolute orientation on each camera and calculating external parameters of a calibration image acquired by each camera: determining the position and attitude of the binocular camera in a world coordinate system through absolute orientation, acquiring world coordinates of all calibration points of the calibration image, and calculating external parameter values of each calibration image relative to the world coordinate system; and performing parameter optimization adjustment on the camera parameters. According to the invention, the problem of difficulty in field calibration of a large field of view including a part of super-large fields of view is solved.

The invention discloses a transformation method for a normal-pressure liquid dangerous cargo tank car with the volume exceeding the standard. The method comprises the following steps: firstly, accurately measuring the actual volume of the tank car by adopting a weighing method, comparing the actual volume with a marked volume, and calculating the volume difference required to be adjusted; and then, based on a calculation result, a proper hole opening position on the swash plate is determined. The hole is formed in the designated position of the swash plate, and the vent hole above the position is blocked, so that a closed gas phase space can be formed in the area above the hole forming position of the bin in the filling process, liquid in the bin is prevented from continuously rising during filling, and the volume of the tank car is accurately reduced. According to the method, the tank does not need to be welded, the internal structure of the tank is not changed, transformation is achieved only by adjusting the positions of the vent holes of the swash plate, and compared with a traditional method, the method has the advantages of being easy and convenient to operate, economical, efficient, high in adaptability and the like.

The application discloses a resin matrix vertical forming equipment with movable slider controlled cavity and a method thereof, and particularly relates to the technical field of resin matrix forming equipment, and comprises an upper die and a lower die, the lower die is arranged on a lower die base, the upper end of the lower die base is provided with a die closing locking mechanism, the upper end of the upper die is provided with a filling pipe joint, a filling pipe is connected to the filling pipe joint, the end of the filling pipe far from the filling pipe joint is connected with the die closing locking mechanism, and the upper end of the lower die base is provided with a movable slider group, in the application, the reasonable control of gravity is realized through the movement control of the movable slider group, the resin matrix can be relatively uniformly filled downwards when the side wall is formed, the product quality is controlled, and the operation technical difficulty is reduced compared with the traditional vacuum forming mode.

The present invention discloses a cerebrospinal fluid tumor organoid culture method, which uses primary tumor cells in cerebrospinal fluid for in vitro tumor organoid culture, mixes the primary tumor cells with Matrigel matrix glue, incubates the mixture to solidify the matrix glue, then adds cerebrospinal fluid tumor organoid culture medium for culture, replaces fresh culture medium every two days, and can induce differentiation to form cerebrospinal fluid tumor organoids after 5 days of culture.

The utility model discloses a wide waist type multi -code adjustable binding rubber thread positioning sewing process template, including bottom plate, fixed frame, cover plate, apron, size adjusting structure, positioning board and reinforcing plate, and the corresponding setting has waist upper mouth line groove group, first rubber thread groove group, second rubber thread groove group, waist lower mouth line groove group and adjusting groove group in proper order on cover plate and apron, the surface of bottom plate in fixed frame inside is provided with positioning board, and the size adjusting structure is provided between bottom plate and cover plate, and the size adjusting structure passes through first rubber thread groove group and second rubber thread groove group, and positioning board passes through adjusting groove group, and cover plate upper layer first rubber thread groove group and second rubber thread groove group one end are provided with a nail respectively, and the rubber thread is provided between the nail and the size adjusting structure. Advantage, through setting bottom plate, cover plate and apron three one -to -one corresponding multiple rubber thread grooves, set the nail on the size adjusting structure on cover plate and bottom plate, make rubber thread position fixed, and the pulling force is even, realizes sewing multiple rubber thread operation simple, and the stitch is straight.

The present invention provides a method for preparing an E-type iron core, comprising the following steps: S1, designing an E-type iron core model; S2, 3D printing the E-type iron core: using 3D printing technology to print an integrally formed E-type iron core, wherein the E-type iron core comprises a plurality of E-type iron sheets and a spacer layer, the spacer layer is arranged between two adjacent E-type iron sheets, and the spacer layer is composed of a plurality of triangular support blocks; S3, hot isostatic pressing; S4, sandblasting and polishing; S5, coating with an insulating solution; S6, solidification and molding. The preparation method realizes the preparation of the E-type iron core by three-dimensional printing. The preparation method can not only realize one-to-one precise molding of various complex structures according to the three-dimensional design size of the E-type iron core, but also has low operating technical difficulty, fewer operating process steps, simpler equipment and low price. At the same time, the E-type iron core can be integrally formed, thereby avoiding the problem of brittle fracture of iron sheets prepared by conventional stamping methods.

The invention provides a pathological image analysis method and system, and the method comprises the steps: collecting a clinical tissue sample, carrying out the dispersed preparation of the clinical tissue sample, and obtaining a to-be-processed sample; performing hyperspectral imaging on the cell sample and extracting a region of interest to obtain a region of interest image; on the basis of an electromagnetic theory and a morphological theory, feature extraction is carried out on the region-of-interest image, and the extracted features are fused to obtain fused features; and based on deep learning, predicting a cell sample through the fusion features to obtain an analysis result. According to the method, rapid pathological classification of the fresh tissue cells and evaluation and prediction of the treatment effect can be realized by applying an electromagnetic-morphology dual-mode intelligent analysis technology of hyperspectral imaging, and the detection efficiency and precision can be improved.

The present application discloses a single-scale on-site calibration method, which belongs to the field of camera calibration technology, including: using a straight-line scale and using a binocular camera to obtain a calibration image; relative orientation of each camera and obtaining the initial values ​​of the camera's internal and external parameters: by relative orientation, determining the relative position and posture relationship between each camera in the binocular camera, establishing a local coordinate system with the reference camera as a reference, and using the coplanar condition between the cameras to obtain the initial values ​​of the camera's internal and external parameters; absolute orientation of each camera and solving the external parameters of the calibration image obtained by each camera: by absolute orientation, determining the position and posture of the binocular camera in the world coordinate system, obtaining the world coordinates of all calibration points of the calibration image, solving the external parameter values ​​of each calibration image relative to the world coordinate system; and optimizing and adjusting the camera parameters. The present invention solves the problem of difficulty in on-site calibration of large fields of view, including some ultra-large fields of view.