6results about How to "Reduce processing size" patented technology

The invention discloses a power grid analysis system and analysis method based on a topological graph, and the method comprises the steps: collecting power grid equipment information and topological connection relation data, and constructing an equipment state library and a power grid topological model; obtaining a plurality of node importance degrees and a plurality of edge connection closeness degrees according to the power grid topology model, and partitioning the power grid by using a multi-scale strongly connected region finite division method to obtain a plurality of power grid partitions; obtaining a comprehensive risk index of the plurality of power grid partitions according to the plurality of node importance degrees and the plurality of edge connection closeness degrees, and screening out the power grid partitions exceeding a preset risk threshold to obtain risk partitions; and collecting operation data of the risk partition, and inputting the operation data into a fault prediction model constructed based on deep learning to obtain fault time and fault equipment predicted by the risk partition. The invention relates to the technical field of power grid risk analysis, and solves the technical problems of low analysis efficiency and insufficient pertinence in an existing power grid analysis method.

The invention provides a network security attack classification detection method and system based on a random forest, and relates to the technical field of network security. The method comprises the following steps: collecting network flow data; determining target network traffic data through a time-based sliding window algorithm; extracting a plurality of network traffic characteristics in the target network traffic data; calculating an average entropy value of the network flow characteristics; judging whether the average entropy value of the network flow characteristics is within a preset entropy value range or not; if yes, preliminarily determining the target network traffic data as normal traffic data; otherwise, preliminarily determining the target network traffic data as abnormal traffic data, and entering the next step; performing data processing on the abnormal traffic data; and carrying out classification detection on the processed abnormal flow data through an improved random forest algorithm to obtain an accurate detection result. The feature importance can be deeply analyzed, the classification efficiency is high, and the time consumed in the classification process is short.

This invention discloses a method and system for detecting solder joints on PCB circuit boards based on image recognition, belonging to the field of image processing technology. The method first acquires and preprocesses 3D point clouds of PCB solder joints, and calculates the local geometric probability density. Non-uniform downsampling is performed using density inverse weighting, prioritizing the retention of sparse key features such as solder joint pins and removing redundant substrate data, outputting a set of physical feature points. This set is then input into a feature extraction network, and strong correlations in feature dimensions are eliminated through local and global forging mapping technology to construct isotropic hypersphere spatial feature vectors. Finally, a multi-coverage discrimination model containing defective hyperellipsoids and normal hyperspheres is constructed based on local density and spatial features. The solder joint quality is comprehensively judged using an integrated voting strategy. This invention effectively solves the problems of false detection and missed detection caused by sparse feature loss and sample imbalance, and significantly improves the detection accuracy of minute defects.

The utility model discloses a treatment system for high-concentration desizing, slashing and dyeing wastewater, which is characterized in that sewage is subjected to quality-based and split-flow treatment according to different properties, desizing and slashing high-concentration sewage is independently collected and then is lifted to a homogeneous hydrolysis acidification pool and a high-efficiency anaerobic reactor for treatment through a pump, and then effluent is connected to a comprehensive sewage adjusting pool through a sedimentation pool; dyeing wastewater and ground flushing and domestic sewage are discharged to a grid well, a microfiltration grid and a comprehensive sewage adjusting tank; after being treated by different pretreatment processes, the wastewater respectively enters a comprehensive wastewater adjusting tank, and then is subjected to advanced treatment by a high multiplication biological treatment tank, a sedimentation tank, an intermediate water tank, a gas-liquid jet flow biological aeration filter tank, a high density clarification tank and a double-membrane method advanced treatment facility, so that pollutants are comprehensively reduced, and the quality of the effluent meets the production reuse water quality standard; and cyclic utilization can be realized. The system has the advantages of simple treatment flow, small occupied area, low construction cost, low operation cost, high automation degree, convenience in operation and management and the like.

The utility model discloses a hydrogen fluoride-containing waste gas and waste water recovery treatment device which comprises a hydrogen fluoride-containing waste gas treatment device and a hydrogen fluoride-containing waste water treatment device, the hydrogen fluoride-containing waste gas treatment device comprises a waste gas recovery primary condenser, a waste gas recovery secondary condenser and a waste gas recovery hydrogen fluoride storage tank which are connected in sequence; the hydrogen fluoride-containing wastewater treatment device comprises a waste liquid evaporator, a waste liquid recovery primary condenser, a waste liquid recovery secondary condenser and a waste liquid recovery hydrogen fluoride storage tank which are connected in sequence; outlets of the waste gas recovery hydrogen fluoride storage tank and the waste liquid recovery hydrogen fluoride storage tank are connected with the hydrogen fluoride recovery distillation tower through the same pipeline after meeting. AHF is recycled for HF-containing waste gas and waste liquid, the recycled AHF can be reused at the front end of a production process, resource recycling is achieved on the premise that the production environment is improved, and the production cost is reduced.

The present invention discloses a treatment device and a treatment method for high-concentration slicing wastewater in the photovoltaic industry, and relates to the technical field of high-concentration slicing wastewater, including a treatment device, wherein the treatment device includes an organic separation membrane device, a separation membrane concentrated water treatment device, a catalytic wet oxidation device, and an aerobic biochemical reaction device; the organic separation membrane device includes a membrane water inlet box, a membrane water inlet pump, a security filter, a membrane booster pump, and a membrane assembly, and the membrane water inlet box, the membrane water inlet pump, the security filter, the membrane booster pump, and the membrane assembly are connected in sequence through pipelines. The biochemical method of the present invention is relatively simple, and only aerobic biochemistry is used. The HRT of the biochemical section is 2d, while the total HRT of the biochemical section of the traditional method is as high as 6~8d, that is, the reaction tank of the biochemical method section of the present invention has a small capacity, a small footprint, and low investment cost and operating costs.