6results about How to "Fast precision" patented technology

The present application belongs to the field of metal ion concentration detection, and particularly relates to a method for detecting the concentration of vanadium ions in the negative electrolyte of a vanadium battery by two-step potentiometric titration. In view of the problems of inaccurate measurement results, large errors and complicated operation of the negative electrolyte of the vanadium battery, the present application detects the concentration of vanadium ions in the negative electrolyte of the vanadium battery by two-step potentiometric titration. In the first step, the negative electrolyte is added to a solution containing excess pentavalent vanadium and sulfuric acid, and the pentavalent vanadium ions oxidize the divalent and trivalent vanadium ions in the solution into tetravalent vanadium ions, and at the same time, part of the pentavalent vanadium ions are reduced into tetravalent vanadium ions. Subsequently, the concentration of tetravalent vanadium ions in the solution is titrated with potassium permanganate to solve the problem of exposure of divalent vanadium ions to oxidation. In the second step, the concentration of vanadium ions in the negative electrolyte is directly titrated with potassium permanganate. The results prove that the present application has small detection result deviation, high precision and accuracy, and the instrument is light and portable, and is suitable for real-time monitoring of energy storage power stations.

This invention discloses a device for detecting and clearing ice and snow debris from power lines, comprising five parts: a crawling mechanism, an obstacle-crossing and clearing mechanism, an eddy current heating device, an autonomous power-collecting device, and a drone docking and flight device. The autonomous power-collecting device includes an electromagnetic power-collecting device and a pantograph contact power-collecting device. The crawling device and the eddy current heating device are located inside an openable structure, while the outside of the openable structure is connected to the electromagnetic power-collecting device and the obstacle-crossing and clearing mechanism. Drone docking and flight devices are located on both sides of the crawling device, with the pantograph contact power-collecting device placed on top of the drone docking and flight devices. A main control unit is located between the crawling device and the electromagnetic power-collecting device. This invention solves the problem that traditional mechanical clearing methods easily damage power lines and accelerate wear. Simultaneously, this invention also addresses the safety hazards faced by existing clearing equipment and personnel, as well as the problem of short single-operation time due to battery performance limitations.

This invention relates to the field of medical technology and discloses a self-supervised breast cancer classification method, comprising the following steps: S1: Image acquisition and dataset creation: acquiring contrast-enhanced spectral images of different modalities and multimodal contrast-enhanced spectral mammography images; S2: Data preprocessing: preprocessing the multimodal contrast-enhanced spectral mammography images, cropping the images, and performing pixel mean squarening; S3: Image feature extraction: extracting image features using a Vision Transformer model and providing image category predictions; S4: Loss calculation: calculating the distortion entropy of the predicted classification result and the information entropy loss between the category confidences generated by the classification branches of the two spectral images. This invention improves speed while ensuring accuracy, balancing the relationship between accuracy and efficiency, and proposes a breast cancer image classification model with high accuracy, fast speed, strong robustness, and good adaptability.

The utility model belongs to the technical field of tool structures, and relates to a tool structure for installing an external roller, which comprises fixed seats arranged at two ends of the roller, and the roller is rotatably connected with the fixed seats; the device further comprises a fixed end fixedly connected to one of the fixed seats, a motor bottom plate is connected to the side, away from the roller, of the fixed end, and the motor bottom plate is used for installing a motor; a pull rod is arranged between the motor bottom plate and the fixed end, one end of the pull rod is connected to the end, away from the fixed end, of the motor bottom plate, and the other end of the pull rod is connected to the top of the fixed end to form a cable-stayed structure. According to the utility model, through the innovative cable-stayed structure and the modular design, the base-free installation of the motor on the external roller is realized. According to the core scheme, an L-shaped combined structure of the fixed end and the motor bottom plate is adopted, a cable-stayed supporting system is formed in cooperation with the pull rod, and a complex base system needed for installation of a traditional roller motor is remarkably simplified.

A track gauge measuring system comprises two wireless digital display displacement meters, a sliding block, a sliding base, a prism set and an elastic piece, the two wireless digital display displacement meters are symmetrically arranged and installed on the lower sides, close to the left end and the right end, of a track measuring vehicle through connecting bases respectively, one wireless digital display displacement meter is connected with the sliding block, the sliding block is connected to the inner side of the sliding base in a sliding mode, and the prism set is connected with the elastic piece. The sliding base is connected to the lower side of the track measuring vehicle, the elastic piece is connected between one wireless digital display displacement meter and the sliding block, the lower side of the sliding block penetrates through the sliding base and then is connected with a first rolling piece, and the first rolling piece is connected to the standard gauge position on the inner side of a track in a rolling mode. The lower end of the prism set penetrates through the sliding base and then is connected to the upper side of the sliding block, the central axis of a prism rod is located over the contact portion of the first rolling piece and the inner side line of the rail, the movable measuring end of the other wireless digital display displacement meter is connected with a second rolling piece, and the second rolling piece is connected to the standard gauge position on the inner side of the rail in a rolling mode. According to the design, the measuring precision is high, and the service life is long.

The utility model relates to steel structure connecting structure technical field, and disclose complex steel structure adaptive regulation's connecting structure, including hoop piece, connecting piece and adjusting part, one end of connecting piece with hoop piece fixed, the first waist type groove is seted up in connecting piece side end outer surface, the upper and lower sides of first waist type groove are respectively equidistance and set up second waist type groove, first waist type groove with second waist type groove parallel design, all with hoop piece arc axis vertical, the fixed hole is seted up in adjusting part outer surface, at least six adjusting holes are arrayed distribution with the circumference, the fixed hole realizes fixed connection with first waist type groove through first bolt, adjusting hole realizes fixed connection with second waist type groove through second bolt, the utility model has the function of horizontal displacement adjustable and all -direction angle adaptation, solved the problem that traditional steel structure connecting piece regulation ability is poor, the low problem of installation efficiency.