3results about How to "Relief speed" patented technology

This invention provides a method for constructing a small bowel CT image recognition and segmentation network model and a recognition method. The construction method includes the following steps: acquiring several small bowel CT images showing lesions and constructing an image dataset, dividing the dataset into a training set and a test set proportionally; enhancing the image dataset in the above steps using dynamic stochastic resonance enhancement; constructing a U-Net network model and training the network model using the enhanced training set obtained in the above steps; testing the network model using the enhanced test set obtained in the above steps, and completing the model construction. This invention proposes a method for enhancing CT images based on dynamic stochastic resonance, which can effectively enhance useful signals in the original image. Since medical image processing is mainly used to assist doctors in diagnosis, the input is an image, and the output is also an image that is easier for doctors to use. This invention establishes a U-shaped neural network that meets this requirement.

The invention relates to a preparation method of a bipolar transistor type silicon-based optical detector with an independent absorption region and a metasurface structure. The detector comprises a top silicon layer (secondary collector region), an n-type silicon layer (collector region), a p-type germanium-silicon layer (base region) and an n-type polycrystalline silicon layer (emitter region) which are arranged on an SOI substrate. And the absorption region is an n-type polycrystalline silicon layer. The method comprises the following steps: epitaxially growing multiple layers of materials on an SOI (Silicon On Insulator) substrate, wherein the multiple layers of materials comprise a Si layer / Si collector region, a SiGe layer / SiGe base region and a polycrystalline silicon layer / polycrystalline Si emitter region; etching the polycrystalline silicon layer and filling SiO2 to form an isolation region; etching to form an emitter region mesa and a collector region mesa, depositing a passivation insulating layer, etching and preparing an electrode contact hole, sputtering and depositing, and manufacturing a metal electrode; and manufacturing a metasurface structure in the polycrystalline silicon layer of the absorption region. According to the device, light detection absorption and photocurrent amplification are separated, structural parameters of an absorption region and the junction area of the bipolar transistor are optimized respectively, high-speed response is achieved, the light absorption efficiency is high, and the absorption detection wavelength is expanded to 1300-1550 nm.

The utility model discloses a track turnout structure of a climbing vehicle, which relates to the technical field of tracks and comprises a mounting frame, a base plate is arranged at the top of the mounting frame, a straight track and an arc track are arranged at the top of the base plate, a butt-joint track is arranged at one end of the straight track, and a driving component is arranged at the bottom of the butt-joint track. The driving assembly comprises a first mounting frame, a driving motor is arranged on one side of the first mounting frame, a lead screw is arranged on the side face of the driving motor, a moving block is arranged outside the lead screw, and a C-shaped clamping plate is arranged at the top of the moving block. The climbing vehicle can conveniently move and transmit in different directions through the straight track and the arc-shaped tracks, the two butt-joint tracks are respectively moved through the two driving assemblies, and the two arc-shaped butt-joint tracks are pushed through the ejection air cylinder, the pushing air cylinder and the screw rod. Therefore, the track is changed from straight running to turning running, and the diversity of the track is improved.