9results about How to "Stable characteristics" patented technology

This invention provides a method for detecting rotating debris in coal flow based on physical fuzzy modeling and scene-customized attention. The method includes: acquiring a clear coal flow image and then labeling non-coal debris targets in the image; establishing a dataset; constructing a debris detection network; constructing a physics-driven motion fuzzy mapping model; using the motion fuzzy mapping model to dynamically blur the clear coal flow image, generating training samples simulating motion fuzziness phenomena in a conveyor belt; training and optimizing the debris detection network; inputting a real-time coal flow image into the optimized network to obtain candidate detection results for non-coal debris targets; post-processing the candidate detection results and outputting the final filtered detection results. This invention can improve the stability and accuracy of debris detection under complex conditions of high-speed coal flow, reduce the influence of motion fuzziness and background interference, and provide technical support for the safety monitoring and automatic sorting of coal mine conveying systems.

This invention discloses a method and system for risk assessment and graded early warning of offshore wind farm vessels. The method involves collecting and fusing multi-source sensing data; performing spatiotemporal alignment and fusion processing on the fused multi-source sensing data to generate a bird's-eye view feature representation containing spatiotemporal characteristic information of the vessel; based on the bird's-eye view feature representation, employing a fusion prediction model combining a vessel motion physics model and a time series prediction algorithm, calculating the motion reachability set of the target vessel within the predicted time period; conducting a risk assessment based on the spatial relationship between the motion reachability set and a preset safe area of ​​the wind farm, and triggering graded early warnings based on the assessment results. This invention solves the problems of blind spots in single-source monitoring and high false alarm rates in traditional early warning systems, achieving accurate and dynamic assessment and proactive early warning of vessel collision risks in offshore wind farm waters, significantly improving regulatory safety and efficiency.

This invention relates to the fields of audio signal processing and machine learning, and particularly to an audio anomaly detection method based on physical perception iterative coding. The method includes a feature extraction and fusion module, a physical perception iterative decoupling network module, and an anomaly scoring module. Based on a physical perception iterative coding mechanism, this invention simulates the human auditory system's perception of sound, decoupling audio features into physical components such as timbre and energy. Through multiple iterations, feature representations are progressively refined, thereby achieving more accurate detection of audio anomalies, especially maintaining stable detection performance in domain-transfer scenarios. Furthermore, this method does not rely on anomalous samples; training can be completed using only normal samples, making it more suitable for practical industrial applications.

This invention discloses a method, system, and readable storage medium for nonlinear simulation of remote sensing images. The method includes: inputting a panchromatic image and a multispectral band image; registering the multispectral image with the panchromatic image and resampling it according to high spatial resolution bands; statistically analyzing the mean, root mean square error, and correlation coefficient matrix of the panchromatic and multispectral images; constructing an intermediate band I using the low-resolution multispectral image; constructing an image simulation operator using histogram feature matching of the remote sensing images; and calculating the feature fusion coefficient k. E and feature extraction coefficient k I The method of this invention determines the image simulation scheme and performs image simulation band by band. There is no limitation on the number of image bands, and the simulation results of remote sensing images can be predicted. This invention provides two image simulation modes: panchromatic image injection into multispectral image and multispectral image injection into panchromatic image, enabling high-fidelity simulation of the spectral and spatial information of ground features in remote sensing images.

The utility model belongs to gas density measurement technical field, especially relates to a kind of anti-explosion gas density gauge. Including: pressure sensing chamber, it is laid in the outside of the shell, and with the inner chamber of the shell is communicated;Pressure sensing diaphragm, its edge end is fixedly sealed with the inner wall of the pressure sensing chamber, axial end bottom is equipped with mandrel, the mandrel is slidably inserted in shaft hole and extends to the lead-through chamber of outside, wherein the shaft hole is opened in the bottom of the pressure sensing chamber, the lead-through chamber is laid in the bottom of the pressure sensing chamber;Spring, it is sleeved on the mandrel, and the upper end of the spring is connected with the pressure sensing chamber, lower end is connected with lead-through plate, the lead-through plate is connected with the lower end of the mandrel, the inner chamber bottom of the lead-through chamber still includes the touch switch of setting. The utility model is pushed by pressure sensing diaphragm and makes lead-through plate and touch switch touch, so that its pressure relief valve opens to carry out timely pressure relief, reach the function of self pressure relief explosion-proof.

This invention discloses a method for preparing a wear-resistant, superhydrophobic, radiation-cooling coating based on reactive blending phase separation. First, hydrophobic fumed silica is modified using a silane coupling agent. Then, epoxy resin and fluorosilicone resin are blended in an organic solvent, and modified silica is added to the blend. The mixture is then ultrasonically dispersed in an ice bath to obtain a uniform dispersion. A non-solvent is added dropwise to the dispersion to induce phase separation in the resin system. Next, a curing agent that reacts with the epoxy resin and a silane crosslinking agent or condensation catalyst that reacts with the fluorosilicone resin are sequentially added to the phase-separated system to obtain a composite sol. The composite sol is coated onto a substrate surface and cured by stepwise temperature increases to finally obtain the target coating. This method achieves a synergistic improvement in the coating's high radiation-cooling performance, high hydrophobicity, and high mechanical wear resistance by constructing a reactive epoxy-fluorosilicone interpenetrating polymer matrix and using chemically bonded modified silica at the interface.

This invention belongs to the field of communication engineering technology, specifically an ultra-wideband multi-segment composite disc-cone antenna, comprising a radiator assembly, a feed assembly, an impedance matching assembly, and a grounding assembly. The radiator adopts a multi-segment composite structure, with a continuous copper plate conical surface in the low-frequency region and a radial spoke array in the high-frequency region, combined with a multi-layer coaxial disk and an electrically loaded structure. The feed end integrates a stepped impedance transformer and an LC composite matching network, and is equipped with a choke slot to suppress common-mode current. A wide grounding plane is configured at the bottom. By utilizing the segmented tapered surface and spoke array composite structure, the low-frequency continuous current path and the high-frequency discrete current path are separated on the same radiator, avoiding mutual interference between high- and low-frequency electromagnetic behaviors.

This invention proposes a method and system for intersection recognition based on multiple features of crowdsourced trajectory data, relating to the technical field of intersection recognition. The method includes: collecting crowdsourced vehicle trajectory data covering a target road area to obtain trajectory vector data; cropping the trajectory vector data to retain the target trajectory vector data; spatially rasterizing the target study area, mapping trajectory points to two-dimensional raster cells to construct multi-channel trajectory feature raster data; spatially aligning and overlaying multiple sets of multi-channel trajectory feature raster data; selecting multiple sample collection areas from the obtained unified multi-channel trajectory feature raster data; labeling the intersections within each sample collection area to form a sample dataset; and supervising the training of an intersection recognition model based on the sample dataset to obtain intersection recognition results and performance evaluation metrics. This application helps improve the accuracy and stability of intersection recognition.

This invention discloses a vancomycin resistance gene multiplex detection system based on real-time fluorescence PCR, aiming to establish a TaqMan probe-based multiplex real-time fluorescence PCR detection method for evaluating five common vancomycin resistance gene subtypes in clinical isolates. vanA、vanB、vanC、vanD and vanM The presence of [a substance] is used to clarify the drug resistance mechanism of the strain and guide precise clinical medication. The detection method established in this invention has superior performance, wherein... vanA and vanM The limit of detection is 10 2 copies / µL, vanB、vanC and vanD 10 3 Copies / µL. No specific amplification was observed in non-target strains, vancomycin-sensitive Enterococcus faecalis, and template-free controls. The coefficients of variation of Ct values ​​for each target strain were <1.0% both intra- and inter-batch. With NGS results as a reference, the overall concordance of this system among 108 clinical isolates was 100.00% (108 / 108).