4results about How to "Avoid sampling" patented technology

This utility model discloses a chemical safety sampling device, including a sampling tube installed on the side of a tank and a protective box covering the sampling tube. A solenoid valve is installed on the sampling tube, and the protective box has a door. One side of the door is hinged to the protective box, and the other side of the door is connected to the protective box via an electromagnetic lock. A start switch is installed on the surface of the protective box. The start switch, electromagnetic lock, and solenoid valve are all connected to a PLC controller. This utility model, by setting a protective box outside the sampling tube and placing the sampling container inside the protective box for sampling, can effectively avoid safety accidents caused by splashing chemical cleaning solutions.

This application provides a multi-view 3D face texture fusion method, the method comprising: acquiring multiple monocular images, wherein the monocular images are one of a frontal face image, a left face image, and a right face image, and the multiple monocular images include at least one frontal face image, one left face image, and one right face image; generating multiple first face models based on the monocular images, the first face models including real textures; generating predicted texture maps based on the first face models; fusing the predicted texture maps with the real textures to obtain multiple texture maps; generating multiple texture masks based on the multiple first face models; generating a target map based on the multiple texture masks and the multiple texture maps; and generating a second face model based on the target map.

The invention relates to the technical field of life cycle tracing, and discloses a fruit and vegetable juice full life cycle tracing method and system, and the method comprises the steps: obtaining fruit and vegetable leaf feature codes, selecting three feature wavebands, and collecting fruit and vegetable absorbance; a planting area is divided into standard grids, the ratio of raw materials is calculated by combining the fruit and vegetable absorbance and the fruit and vegetable juice absorbance, and an association table is generated; comparing the deviation between the actually detected fluorescence intensity and the theoretical fluorescence intensity; obtaining coordinates of the paper-based sensor, calculating a transportation risk value, and analyzing and judging the transportation risk of the transportation scene; correcting a fruit and vegetable juice pesticide residue degradation rate constant by adopting a pesticide residue prediction model, and calculating the real-time pesticide residue concentration of the point-of-sale terminal; a standardized security credential is generated by calculating an acute risk entropy value; carrying out abstract encryption uplink on the key traceability data; implementing a dual verification mechanism, extracting a comprehensive spectrum characteristic value, automatically matching a differential threshold value and carrying out iterative optimization; and setting a full-batch characteristic value abnormity pre-judgment mechanism, and carrying out secondary scanning in a partitioned manner to position an abnormal region.

The application discloses a kind of cascade H bridge converter and parallel branch modulation method and pre-charging method thereof, on the basis of traditional cascade H bridge converter, and parallel branch is connected with the positive end and / or negative end of adjacent H bridge module capacitor;Positive parallel branch is connected to the positive end of capacitor, and negative parallel branch is connected to the negative end of capacitor;Parallel branch is composed of bidirectional switch.The application connects the positive and negative ends of each sub-module capacitor by parallel branch, realizes the balance of H bridge module capacitor in sequence by conducting parallel branch in the zero state of traditional cascade H bridge converter;The topology avoids the sampling of each module DC voltage, high-speed data transmission and high computational resource consumption capacitor voltage balancing control algorithm, with the advantages of simple circuit structure and control system, low cost, small size, good voltage-sharing effect, easy to expand, etc.