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DETR-based printed circuit board defect detection method and device
PendingCN119107289AHigh precisionMeet real-time requirementsImage analysisBiological modelsAlgorithmPrinted circuit board
The invention relates to the technical field of printed circuit board detection, and discloses a DETR-based printed circuit board defect detection method and device, and the method comprises the steps: capturing and extracting a feature map from a to-be-detected image based on a preset backbone network model; adopting a preset RTDETR model, combining a multi-head self-attention mechanism to perform deep fusion on same-scale features in the feature map, and performing cross-scale feature fusion on different-scale features in the feature map to obtain a multi-scale feature sequence; screening out a multi-scale feature sequence containing a target object from the multi-scale feature sequence by using an IoU perception query selection mechanism to obtain a target feature sequence; and predicting the target feature sequence through an RTDETR model, and adjusting the boundary of a prediction frame by using a bounding box regression technology to obtain a bounding box of the printed circuit board defect and a corresponding confidence score. The method has the effect of realizing real-time rapid detection and stability of the defects of the printed circuit board.
Owner:SHENZHEN POLYTECHNIC
Adjustable flexible photovoltaic support and use method thereof
ActiveCN119315919Aachieve fixationRealize up and down movementPhotovoltaic supportsSolar heating energyMechanical engineeringMaterials science
Owner:JIANGSU JINGMAO NEW ENERGY CONSTRUCTION CO LTD
Mobile swimming pool water detection device and detection method
ActiveCN116818226BNarrow down the areaImprove detection efficiencyMeasurement of fluid loss/gain rateHydrologyMechanical engineering
A kind of mobile swimming pool efficient water-free detection device, including vacuum box, slider, jacking element and several regional division elements;Slider is set to the bottom of vacuum box, for transporting mobile swimming pool;Jacking element is inserted between slider, and jacking element is used to lift mobile swimming pool, so that mobile swimming pool is contacted with the inner top wall of vacuum box;The top of vacuum box is provided with several inflation valves that are communicated with the inside of hollow box;Inflation valve is connected with inflation equipment;The top surface and side surface of regional division element are fixed to the inner top surface and side wall surface of vacuum box, and regional division element is located directly above slider;Vacuum box is divided into multiple detection areas that are only communicated at bottom. Regional division element is provided, the space in vacuum box is divided into multiple detection areas by regional division element, and air flow meter is provided in each detection area, the space of vacuum box is refined by regional division element, so as to reduce the range of detection area, improve the efficiency of detection.
Owner:FOSHAN SHUIJINGDAO LEISURE EQUIP
Geological disaster early warning method, device, storage medium and electronic equipment during typhoon
InactiveCN118280071BNarrow down the areaeliminate distractionsData processing applicationsAlarmsEngineeringHydrology
In the geological disaster early warning method, device, storage medium and electronic device provided by the present application during typhoon, multiple geological disaster points are selected in the target early warning area, and according to multiple preset ratios, the first non-geological disaster point of each geological disaster point in each preset ratio is selected nearby; according to each geological disaster point and each first non-geological disaster point, the optimal ratio and target prone area are determined; for each geological disaster point, the second non-geological disaster point is selected nearby in the target prone area according to the optimal ratio; the geological disaster influencing factor, each geological disaster point and each second non-geological disaster point are input into the geological disaster prediction model, and the geological disaster prediction results output by the geological disaster prediction model and the high-risk rainfall area during the typhoon in the target early warning area are used to generate geological disaster early warning information in the target early warning area during the typhoon. In this way, the accuracy of geological disaster risk prediction under typhoon weather can be improved.
Owner:SUN YAT SEN UNIV
Annular battery module structure and battery pack
ActiveCN222620024Uimprove securityReduced risk of thermal runawayBattery isolationSecondary cellsElectrical batteryFire risk
The utility model relates to the technical field of batteries, and discloses an annular battery module structure and a battery pack, and the annular battery module structure comprises a plurality of fan-shaped units. The annular battery module structure of the structure is formed by arranging a plurality of fan-shaped units along an annular path, all batteries in the annular battery module structure are located between two supporting frames, the environments where different batteries are located are the same, and the exposed surfaces of the different batteries are the same; the temperature difference between the batteries at different positions in the annular battery module structure can be effectively reduced, the thermal runaway risk of the batteries is reduced, the service lives of the batteries and the battery module are prolonged, and the fire risk is reduced, so that the personal safety and the property safety are guaranteed. Meanwhile, each battery is located between the two supporting frames, the stress of the batteries at different positions is the same, and the consistency of the batteries in the aging process is good. The adjacent batteries are separated by the support frame, so that the thermal runaway area range can be reduced when the local batteries are in thermal runaway.
Owner:SVOLT ENERGY TECHNOLOGY CO LTD
Image forgery analysis method and system, electronic equipment and storage medium
PendingCN119478982AReduce difficultyshorten the timeDigital data information retrievalSpecial data processing applicationsAlgorithmText categorization
The invention provides an image forgery analysis method and system, electronic equipment and a storage medium, and relates to the technical field of data analysis, and the image forgery analysis method comprises the following steps: obtaining text information of a bill image; performing text classification on the text information of the bill image to obtain a bill category corresponding to the bill image; detecting an amount area of the bill image; after the amount area in the bill image is positioned, performing cutout processing on the amount area to obtain a cutout picture; and according to a bill classification model corresponding to the bill category of the bill image, carrying out authenticity detection on the matted picture to obtain an authenticity result of the bill image. According to the image forgery analysis method and system, the electronic equipment and the storage medium provided by the invention, the forgery images in the multi-type bills can be effectively recognized, and the recognition process of subtle changes of the multi-type bills can be more conveniently expanded, so that the manual auditing time is shortened, and the auditing efficiency is improved.
Owner:SHENZHEN YISHIHUOLALA TECH CO LTD
Air duct structure, fresh air module and air conditioner
PendingCN119146512Areduce noiseimprove blockageDucting arrangementsLighting and heating apparatusFresh airMechanical engineering
The embodiment of the invention provides an air duct structure, a fresh air module and an air conditioner, the air duct structure is provided with a first air duct and an air inducing opening, the first air duct is provided with a first air inlet part, a first fan cavity and a first air outlet part which are sequentially communicated, and the first air outlet part and the plane where the first fan cavity is located are vertically or obliquely arranged; the air inducing opening is formed in the side wall of the first air duct and located in the area, connected with the first fan cavity and the first air outlet part, of the side wall, and the air inducing opening is used for forming blocking airflow flowing towards an outlet of the first air outlet part at the connecting part of the first fan cavity and the first air outlet part. And the blocking airflow flows to the first air outlet part along the side wall of the first air duct.
Owner:TCL AIR CONDITIONER ZHONGSHAN CO LTD
Unmanned aerial vehicle airborne everything identification method and system based on multi-modal semantic guidance
ActiveCN121937923AImplement dependenciesRealize data processingResource allocationCharacter and pattern recognitionSemantic vectorSemantic alignment
The invention provides an unmanned aerial vehicle airborne everything recognition method and system based on multi-modal semantic guidance. The method comprises the steps of obtaining a voice signal, a video image and a first text instruction collected by an unmanned aerial vehicle; semantic vectors of the voice signal and the first text instruction are extracted and fused, and a semantic fingerprint vector is generated; performing feature extraction on the video image by adopting a cascade heterogeneous feature extraction network, and determining a visual feature vector; according to the method, the semantic fingerprint vector and the visual feature vector are subjected to semantic alignment, the semantic similarity between the semantic fingerprint vector and the visual feature vector is calculated, the candidate target is determined based on the semantic similarity, target identification is completed, and the semantic fingerprint vector generated through multi-modal fusion can be used for identifying the target without external communication. Local semantic matching and retrieval can be realized on the collected visual feature vectors, so that the problem of target recognition lag caused by remote communication delay is avoided, and the real-time performance is improved; and meanwhile, reasoning is performed through the heterogeneous feature extraction network, so that the energy consumption is remarkably reduced.
Owner:SICHUAN AOSSCI TECHNOLOGY CO LTD
Method for analyzing electrochemical performance of solid oxide stack based on one-dimensional string-bead model
PendingCN122245476ABalanced fidelityImprove analysis accuracyChemical processes analysis/designDesign optimisation/simulation
This invention provides a method for analyzing the electrochemical performance of solid oxide battery stacks based on a one-dimensional beaded model, comprising: Step S1, discretizing the solid oxide battery stack into multiple beaded units along the flow channel direction and connecting them in series along the height direction to form a one-dimensional beaded model; Step S2, simulating the flow field and thermal field of the inlet region of the solid oxide battery stack using a three-dimensional finite element model and extracting initial boundary conditions; Step S3, obtaining multi-physics coupled solution results by coupling solutions in each beaded unit; Step S4, dividing the solid oxide battery stack into an end plate region and a uniform intermediate region based on the differential decay index threshold and differential decay index; Step S5, calculating the voltage distribution and thermal response characteristics of the solid oxide battery stack under dynamic load. The beneficial effect is that this invention can balance efficiency and accuracy and characterize the multi-physics spatiotemporal evolution characteristics of the solid oxide battery stack under dynamic load.
Owner:NINGBO UNIV
Ring battery module assembly process
ActiveCN118040005BReduced risk of thermal runawayimprove securityAssembling battery machinesCell component detailsElectrical batteryProcess engineering
The present invention relates to the field of battery technology, and discloses a ring-shaped battery module assembly process, including: arranging battery cells one by one in a receiving space to form a fan-shaped unit; arranging all the fan-shaped units along a ring path, and splicing adjacent fan-shaped units to form a ring-shaped battery module. All battery cells in the ring-shaped battery module structure are in the receiving space, and the environment of different battery cells is the same, which can effectively reduce the temperature difference between battery cells at different positions in the ring-shaped battery module structure. At the same time, the environment of battery cells at different positions in the module is the same, and the expansion force between adjacent battery cells in the ring-shaped battery module can offset each other, reducing the impact of the expansion force on the battery module. Multiple fan-shaped units are spliced to form a ring-shaped battery module, which can simplify the module structure and the molding process of the module and improve the module assembly efficiency. Adjacent battery cells are separated by a bracket assembly, which can reduce the harm of thermal runaway of the battery cells when the local battery is in thermal runaway.
Owner:SVOLT ENERGY TECHNOLOGY CO LTD
Display panel and display device
PendingCN119649734ANarrow down the areaImprove the display effectStatic indicating devicesShift registerDisplay device
The invention discloses a display panel and a display device. The display panel comprises a shift register circuit and a shift detection module, the shift register circuit comprises a plurality of shift register units, and the N shift register units are arranged in a cascade manner; each stage of shift register unit is used for outputting a shift output signal to drive an output signal according to a first clock signal, a second clock signal and an input signal of a signal input end; the shift detection module is electrically connected with the shift output end of each shift register unit; in the scanning stage, the shift detection module is used for obtaining shift output signals output by each shift register unit, and when the shift output signal output by the (i-1) th shift register unit comprises an effective level and the shift output signal output by the ith shift register unit does not comprise the effective level, the shift output signal output by the (i-1) th shift register unit does not comprise the effective level. And an input signal including an effective level is provided for the signal input end of the mth-level shift register unit, so that the abnormal flicker problem of instant blackening of the display panel during electrostatic interference can be effectively improved, and the display effect can be effectively improved.
Owner:JIANGSU TIANHUA AUTOMOTIVE ELECTRONICS CO LTD