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Double-layer bedplate medical vehicle
ActiveCN224155765Ulock accuratelyMeet efficiency requirementsSurgical furnitureBraced frameControl theory
Owner:NANJING TIANAO MEDICAL INSTR MFR
Automatic feeding machine for galvanized steel pipes
ActiveCN224128728Usmall diameterGuaranteed smooth progressTube shearing machinesShearing machine accessoriesTransmission beltConveyor belt
The utility model relates to the technical field of galvanized steel pipes, in particular to an automatic galvanized steel pipe feeding machine which comprises a support and a feeding device, a first air cylinder is fixedly installed at one end of the support, a cutting machine is fixedly installed at the driving end of the first air cylinder, and the feeding device is arranged on the surface of the support and comprises a frame which is fixedly connected with the support. A direct-current motor is fixedly connected to one side of the frame, the driving end of the direct-current motor penetrates through the frame and is rotationally connected with the frame, the driving end of the direct-current motor is sleeved with a transmission belt, a guide pipe is fixedly connected to the surface of the support, a feeding port is formed in the side, close to the transmission belt, of the guide pipe, and a second air cylinder is fixedly connected to one end of the guide pipe. The conveying belt replaces manual carrying, the galvanized steel pipe can be rapidly and continuously conveyed to the cutting position, the overall process of cutting machining is greatly accelerated, and the requirement of large-scale production for efficiency is met.
Owner:迁安正大通用钢管有限公司
A method for measurement calibration when a target deviates from the isocenter in a DSA two-dimensional image.
PendingCN122075035AAchieve magnitude improvementsImprove calibration accuracyPatient positioning for diagnosticsRadiologyMagnification
This invention relates to medical X-ray imaging systems, specifically a method for measuring and calibrating a target in a DSA two-dimensional image when it deviates from its isocenter. The method is achieved through the following steps: 1. Under standard alignment or when the target is isocentered on the DSA machine, acquire and record relevant parameters of the target; 2. After the DSA machine rotates or the examination table moves, and the target deviates from its isocenter, acquire the corresponding parameters used when generating the two-dimensional image, including the machine's X-ray source rotation radius, rotation angle, examination table height and position, and the distance between the target and the table surface. Substitute these parameters into a calibration formula to calculate the calibrated X-ray source-target distance; 3. Calculate the estimated magnification using the calibrated X-ray source-target distance and the X-ray source-detector distance used when generating the two-dimensional image, thereby achieving pixel calibration of the two-dimensional image and ultimately achieving accurate measurement of the target.
Owner:JINAN THE THIRD HOSPITAL
Method and system for maneuvering target parameter estimation and long-time coherent accumulation detection
The application provides a motor target parameter estimation and long-time phase correlation accumulation detection method and system, which first carries out radio frequency conditioning and sampling on a radar original echo, carries out pulse compression after obtaining a discrete complex baseband signal, and outputs a range focusing but still containing range migration frequency domain signal. The core step utilizes a second order Keystone transformation to correct the second order range migration of the target, outputs a second order correction signal eliminating the range-azimuth coupling, and then searches the optimal speed through a Bayesian optimization and CPU parallel acceleration algorithm. On this basis, the IAR algorithm is utilized in combination with the optimal speed estimation value to correct the first order range migration, and phase compensation is carried out according to the speed matching phase factor to obtain a phase matching signal. Finally, the matching signal is subjected to a non-uniform fast Fourier transformation in a slow time domain to realize energy focusing, and the complete motion parameters of the target are solved through analyzing the peak position and amplitude characteristics in the Doppler domain.
Owner:SHANGHAI JIAOTONG UNIV
Battery x-ray overhang measurement method and system based on target detection coarse positioning and polar slice structure prior boundary segmentation
The application discloses a battery X-ray Overhang measurement method and system based on target detection coarse positioning and polar plate structure prior boundary segmentation. The method comprises the following steps: acquiring an X-ray original image of a battery to be measured; performing coarse positioning on the battery area of the image and cutting the image to obtain a local image to be measured; inputting the local image to be measured into a polar plate boundary segmentation network based on polar plate structure prior, performing multi-scale feature coding, structure prior fusion and two-stage progressive boundary estimation, and outputting a polar plate boundary probability graph; performing post-processing on the probability graph, extracting positive and negative polar plate boundary position sequences, calculating layer-by-layer Overhang and alignment degree statistics, and outputting a qualified judgment result. In the reasoning stage, only a single image to be measured is required, the layer-by-layer Overhang numerical chain can be output under the condition of two-dimensional X-ray, the coarse positioning cost is reduced, and the measurement reliability in the dense polar plate scene is improved.
Owner:广州多浦乐电子科技股份有限公司