10results about How to "Reliable choice" patented technology

The invention relates to the technical field of three-dimensional scanning, in particular to a method for determining a three-dimensional scanning distance and range under a given precision condition, which determines the precision of a three-dimensional scanner within a specified range under different distances through a calibration test and detailed data analysis of a system, provides reliable scanning parameter selection, and improves the accuracy of the three-dimensional scanning distance and range. The method is widely applied to the fields of building measurement, industrial detection, cultural heritage protection and the like; according to the method, subjectivity and blindness of scanning parameter selection are avoided through a scientific parameter selection method, meanwhile, the working efficiency of scanning operation is improved, accidental errors are reduced through multiple tests and data averaging processing, comprehensive data are provided, influence factors and rules of scanning precision are clarified, the scanning process is optimized, and the scanning accuracy is improved. The efficiency and the result precision are improved, and the problem that the precision reliability of an existing three-dimensional scanning system in practical application is limited is solved.

The invention discloses steel with excellent surface quality for a power battery shell and a manufacturing method thereof. The steel for the power battery shell comprises the following chemical components in percentage by weight: 0.015%-0.025% of C, less than or equal to 0.030% of Si, 0.10%-0.20% of Mn, less than or equal to 0.01% and less than or equal to 0.02% of P, less than or equal to 0.012% of S, 0.03%-0.08% of Cr, 0.02%-0.05% of Alt, 0.002%-0.005% of B and the balance of Fe and inevitable impurities. The cold-rolled sheet for the low-carbon deep-drawing battery shell is produced mainly by accurately controlling components in steel and through the working procedures of hot rolling, layer cooling, acid rolling, annealing and leveling. According to the cold-rolled steel plate produced by the method, the yield strength is 190-260 MPa, the tensile strength is 320-390 MPa, the ductility is larger than or equal to 38%, the HR30T range is 45-50, and the cold-rolled steel plate has the high-speed stamping capacity, certain anti-pressure capacity and excellent surface quality.

The invention discloses a target screening optimization algorithm during lane changing of an own vehicle, which comprises the following steps of: firstly, activating an ACC longitudinal control function of the own vehicle, acquiring own vehicle parameters, front target vehicle parameters, own lane parameters, left lane parameters and right lane parameters, and calculating a center line equation of the own lane, the left lane and the right lane; judging whether to change a lane or not and which lane changes to the left and right; when a lane to be switched is determined and entered, the current lane center line of the vehicle is calculated; when the vehicle just enters the lane to be switched, no lane change judgment is carried out within 3s; and after the vehicle enters the lane to be switched, no lane changing judgment is carried out within 3 seconds, and the lane changing work of the vehicle is completed. The target screening optimization algorithm for the self-vehicle during lane changing has the advantages that the selection of the vehicle following target is more reliable and effective, ACC control is smoother, and the safety and reliability of lane changing operation are improved.

The invention relates to the technical field of cables, and provides a cable auxiliary selection method and device, and the method comprises the steps: S1, constructing a cable database, and inputting standard construction scene information and standard cable parameters into the cable database; s2, acquiring construction scene information of an actual demand and historical environment parameters of an actual construction geographic position, and querying a cable database based on the construction scene information of the actual demand, the historical environment parameters of the actual construction geographic position and a cable length demand to obtain a matched available cable and cable parameters thereof; s3, determining a feasible combination mode of available cables according to cable length requirements, and pushing a recommendation result; and S4, according to the feasible combination mode of the available cable selected by the user, calculating the corresponding cost, obtaining the construction mode corresponding to the construction scene, and displaying the cost corresponding to the feasible combination mode of the available cable selected by the user and the related construction mode. The selection reliability of the cable is ensured.

This invention relates to the field of satellite communication mission planning technology, and proposes a laser communication link planning method and system that integrates illumination constraints to avoid misjudgments and missed judgments caused by ground background light entering the acquisition camera. This invention simulates the movement position of the acquisition camera, then combines satellite orbit and attitude data, and determines the direction of the acquisition camera's central optical axis and the ground projection range of the camera's field of view through coordinate system transformation. Based on the Earth-Sun motion and illumination constraints, it determines whether the image is affected by illumination, thereby determining a reasonable link plan. It provides a scanning range planning mode to predict a reasonable scanning range for the satellite acquisition camera, and a scanning time period planning mode to predict a reasonable scanning time period for the satellite acquisition camera, offering flexible application options for laser communication link planning and promoting rapid and accurate ground-transmitted beam acquisition in lunar space and even deeper space.

The invention provides a preparation method of cubic microcrystalline copper powder, the cubic microcrystalline copper powder and application of the cubic microcrystalline copper powder, and particularly relates to the technical field of functional powder preparation. The preparation method comprises the following steps: adding a first copper salt solution into a reducing agent solution at a speed of 2-5L / min to carry out a first reduction reaction so as to obtain a mixed solution; and continuously adding a second copper salt solution into the mixed solution according to the speed of 0.2-1L / min to carry out a second reduction reaction, and finally carrying out solid-liquid separation, washing and drying to obtain the cubic microcrystalline copper powder, wherein the reducing agent solution comprises a reducing agent, a template agent and water. The preparation method provided by the invention is simple in process, a distribution process of the copper salt solution is adopted, the growth trend of particles is effectively controlled, and the cubic microcrystalline copper powder with good dispersity and uniform particle size distribution is obtained.

The invention provides a novel tubular ceramic membrane air dissolving device and a rotational flow air flotation system.The air dissolving device comprises a plurality of air dissolving modules installed between an upper array plate and a lower array plate, each air dissolving module comprises an outer pipe and a ceramic membrane inner pipe, the outer pipe wraps the ceramic membrane inner pipe, the ceramic membrane inner pipe is provided with an air inlet communicated with an air inlet pipeline of the lower array plate, and the air inlet pipeline is communicated with an air outlet pipeline of the lower array plate; the upper and lower ends of the outer pipe are respectively provided with a water inlet and a dissolved air water outlet, the ceramic membrane inner pipe is hollow, and the pipe wall is provided with a plurality of micro-channels. The rotational flow air flotation system comprises a water inlet pipeline, a dosing device, a pipeline mixer, a reaction tank and the like, sewage enters the reaction tank after being mixed with a coagulant aid, and pollutants float upwards and are discharged under the action of microbubbles. The device has the characteristics of compact structure, simplicity and convenience in operation, low maintenance cost, high adaptability and the like, is suitable for sewage treatment of different scales, effectively improves the sewage treatment efficiency, and provides a new thought and technical route for the technical field of air floatation and air dissolution.

A radio communication node controls transmission of an antenna beam. The radio communication node transmits, to a parent node, a control element of a medium access control layer representing a recommended antenna beam recommended for use.

The invention provides a screening method and system for a blast furnace heat prediction model, and relates to the technical field of blast furnace smelting. The method comprises the following steps: training a plurality of candidate prediction models; calculating a combined evaluation index of each model for furnace heat abnormity early warning, wherein the indexes comprise three indexes for measuring prediction accuracy, abnormity capture capability and early warning advance; and determining an optimal prediction model according to an evaluation result of the combined evaluation indexes. According to the method, the combined evaluation indexes oriented to abnormal early warning are constructed, so that the model evaluation standard is aligned with the actual production demand, the screened optimal model has the capability of accurately early warning the key furnace heat abnormality in advance, precious reaction time can be won for field operators, and the method has relatively high practical value.

The invention discloses a composite material and a preparation method and application thereof, the composite material comprises a CoP substrate, a high-entropy oxide is formed on the CoP substrate, the high-entropy oxide is composed of metal elements and non-metal elements, the metal elements comprise Fe, Co, Ni, Cu and Ce, and the non-metal elements comprise O. The composite material developed by the invention takes CoP as a substrate, is fused with the high-entropy oxide and optimized elements such as Cu and Ce, and shows remarkable advantages in the field of clean energy conversion such as hydrogen production by electrolysis of water. The material not only has excellent electrocatalytic activity, can realize efficient hydrogen precipitation under lower overpotential, but also has good corrosion resistance and structural stability. Due to the characteristics, the composite material becomes a technical solution with great potential in hydrogen energy economic development, and is expected to provide powerful support for wide application of clean energy.