14results about How to "Solve drift" patented technology

This invention provides an intelligent analysis system for photoelectric detection spectral data based on deep learning, belonging to the fields of photoelectric detection, spectral data analysis, and deep learning application technology. The system includes core units such as a spectral data acquisition unit, a preprocessing unit, a feature extraction unit, and a deep learning analysis unit, as well as auxiliary units for anomaly detection and data storage, forming a closed-loop architecture of acquisition-processing-analysis-output-optimization. It improves data quality through step-by-step preprocessing algorithms, reduces computational load by adaptively selecting key features, deeply mines spectral patterns using a model that integrates convolutional neural networks and attention mechanisms, achieves rapid scenario adaptation through transfer learning, and dynamically optimizes model parameters based on a feedback mechanism. The system solves the problems of low accuracy, poor adaptability, and long training cycles in traditional spectral analysis, achieving accurate, efficient, and intelligent spectral data analysis, and is suitable for various photoelectric detection scenarios such as qualitative and quantitative analysis of substances and environmental monitoring.

This invention relates to the field of grain dryer technology, specifically to a grain dryer discharge mechanism with an anti-breakage structure. The mechanism includes a main body with a discharge chamber at its bottom, connected to a grain receiving hopper at the bottom; a frame unit located within the discharge chamber, comprising a first frame slidably connected to the inner wall of the discharge chamber, and a second frame slidably nested in the middle of the first frame; both the first and second frames have connecting grooves on their outer walls, with the two sets of grooves facing opposite directions; a partition plate fixed inside the discharge chamber above the frame unit, with several discharge ports extending through its top; and a drive unit located within the discharge chamber. This invention enables low-breakage discharge throughout the entire grain dryer process, single-drive multi-mode controllable discharge, and also helps to break up knots and prevent damage. The purely mechanical structure ensures stable operation and is suitable for drying various grains.

The application discloses a kind of gas-liquid two-phase leakage ultrasonic safety detection method and device, it is related to mechanical engineering and nondestructive testing technical field, the method includes: deployment multichannel ultrasonic sensor array;Dynamic noise baseline based on adaptive Gaussian mixture model is constructed;Extract amplitude attenuation rate, center frequency offset and other multidimensional acoustic characteristics and calculate difference vector;Combining dynamic threshold and multi-probe time delay-amplitude information carries out leakage preliminary judgment and positioning;Through convolution-long short-term memory hybrid neural network, identify leakage mode and implement three-level risk early warning according to leakage rate.The system is composed of multichannel ultrasonic sensor array, signal processing module, feature extraction unit, positioning solution module and intelligent early warning engine.The application can realize high sensitivity detection, strong working condition adaptability, accurate positioning and quantification and closed-loop intelligent response, significantly improve the intrinsic safety level of gas-liquid two-phase flow system.

This invention relates to the field of agricultural aviation intelligent equipment and precision spraying technology, and particularly to a method for the formulation and spraying control of chemical adjuvants in agricultural drones, comprising the following steps: Step S1, acquiring flight status parameters of the agricultural drone and three-dimensional topographic data of the crop canopy below, and constructing a real-time aerodynamic flow field model superimposed with the downwash airflow of the agricultural drone rotor and the environmental wind field; Step S2, predicting the sedimentation trajectory of the pesticide droplets based on the real-time aerodynamic flow field model, calculating the surface tension and dynamic viscosity required for the droplets to reach the target canopy based on the sedimentation trajectory, and generating an instantaneous mixing ratio including the main pesticide solution and various adjuvants; In this invention, by constructing a real-time aerodynamic flow field model and directly sending the instantaneous mixing ratio of the main pesticide solution and various adjuvants to a microfluidic mixing device installed at the end of the nozzle for in-situ mixing, the physical space limitations and response lag of traditional agricultural drone pipeline mixing are broken.

The invention discloses an automatic cleaning and maintenance control method and system for water quality monitoring equipment and a medium, and belongs to the field of water quality monitoring. The method comprises the steps that pure water generated by a built-in pure water production assembly of equipment serves as a measurement anchor point, and whether sensors are normal or not is judged on the basis of comparison results of detection numerical values of the sensors in a pure water environment and a preset pure water threshold value; monitoring operation state parameters of the pure water production assembly, and dynamically adjusting and updating the pure water threshold value corresponding to each sensor; when the value of the sensor deviates from the threshold value, first-stage pure water flushing is executed; if not, second-stage maintenance is started according to the sensor type, the optical sensor performs optical path self-cleaning or backwashing, and the electrochemical sensor performs electrode cleaning; and detecting again after maintenance, and locking the sensor and generating a fault alarm if the sensor is still not recovered. Through dynamic threshold configuration, progressive maintenance and sensor adaptive cleaning, the problems of reference drift and deep pollution are solved, the data credibility is improved, and the operation and maintenance cost is reduced.

This invention provides a method for measuring and locating marine station structures suitable for silty coastal zones. The method includes acquiring multi-source monitoring data for the silty coastal zone; extracting deformation feature points of the marine station structure from the multi-source monitoring data and generating planar displacement maps and elevation displacement maps of the feature points relative to a reference period for each monitoring cycle; calculating spatial offsets based on the planar displacement maps and elevation displacement maps to generate geological deformation distribution maps for each monitoring cycle and mapping them to generate a foundation stability coefficient matrix; and fusing the foundation stability coefficient matrix for each monitoring cycle with historical positioning benchmarks to generate structural safety positioning coordinates. This invention can improve the accuracy and anti-interference capability of structural displacement monitoring in complex geological environments.

This utility model discloses a high-precision touch testing system for curved screens, comprising a worktable. An adaptive curved screen leveling and clamping device is mounted on the top of the worktable. The worktable also includes an X-axis linear drive device, a Y-axis linear drive device, a Z-axis vertical drive mechanism, and a multi-functional stylus switching device. A copper head device that contacts the screen is mounted on the Z-axis vertical drive mechanism. A seven-degree-of-freedom collaborative robotic arm is mounted on one side of the adaptive curved screen leveling and clamping device, and an intelligent end effector is mounted at the end of the seven-degree-of-freedom collaborative robotic arm. Above the worktable are a machine vision positioning device for coarse positioning of the product under test and a visual calibration device for spatial mapping calibration of touch point positions. This utility model achieves automated leveling, curvature modeling, and quantitative testing of edge touch performance for curved screens, effectively solving the problems of poor compatibility and insufficient edge touch accuracy.

This invention relates to the field of chemical reaction equipment technology, specifically to a formaldehyde oxidation reactor with an easy-to-clean airflow distribution plate. The reactor includes a reactor body, an inlet chamber, an airflow distribution plate, and a cleaning system. The cleaning system includes a gas collecting hood disposed within the inlet chamber, a gas delivery mechanism that drives the gas collecting hood to rotate around the axis of the reactor body while adhering to the bottom surface of the airflow distribution plate, and a high-pressure pulse source located outside the reactor body. By setting a sliding gas collecting hood within the inlet chamber and cooperating with the external high-pressure pulse source, online cleaning is achieved without shutting down the reactor or lowering the temperature. This transforms traditional top mechanical scraping into a bottom-directed jet, eliminating the interference and jamming risks caused by mechanical scrapers moving between high-temperature, dense air caps, and solving the problems of flow deviation and localized overheating caused by pore blockage.

This utility model discloses a battery pack and electrical equipment, including: a housing, and a battery module, a battery management system (BMS), a shunt, an electrical connector, and a first data acquisition plate located inside the housing; one end of the shunt is electrically connected to the battery module, and the other end is connected to an external load; the electrical connector includes an independently arranged first signal acquisition line and a power output line, one end of the electrical connector is electrically connected to the battery management system, and the other end extends to one side of the shunt; the first data acquisition plate includes a first connecting part, a second connecting part, and a third connecting part, the first connecting part and the second connecting part are spaced apart and electrically connected to the third connecting part respectively, the first connecting part is electrically connected to the first signal acquisition line, the second connecting part is electrically connected to the power output line, and the third connecting part is electrically connected to the shunt. Placing the shunt outside the BMS allows for flexible adjustment of the positions of both the shunt and the BMS; it facilitates optimization of the overall battery pack structure; and it ensures the accuracy of the shunt current acquisition.

The application discloses a mobile Beidou high-precision positioning multi-source data fusion method and system, and relates to the technical field of high-precision navigation and positioning.The application suppresses the problem of satellite observation value quality degradation in a complex environment by means of tight coupling layer explicit modeling and online estimation of multipath error.In the tight coupling deep fusion and solving process, a first factor graph model is constructed, the multipath error is explicitly modeled as a state parameter to be estimated, and the multipath error is included in Beidou original observation factors.In the joint optimization solving process, the first factor graph model performs online real-time estimation and update on the multipath error as an independent degree of freedom, actively distributes and absorbs the part of the observation residual that can be attributed to the multipath interference into the state parameter, and enables the tight coupling solving module to output a more reliable and stronger anti-interference tight coupling optimal pose sequence and provide a stable absolute position even when the satellite observation condition is seriously polluted by the multipath.

This invention relates to the field of intelligent manufacturing and industrial quality management technology, and in particular to a management system for die-cast housings of new energy vehicles. The system includes a data acquisition module for periodically collecting production data, quality data, and production equipment data of the die-cast housings; a data analysis module for determining the defect type of the die-cast housings within a single cycle based on the average defect density and defect clustering index of the die-cast housings within that cycle; a traceability module for determining different traceability methods based on the defect type of the die-cast housings within a single cycle; and an adjustment module for adjusting the judgment parameters for the defect type of the die-cast housings within a single cycle based on the defect traceability accuracy. This invention, through automatic and accurate defect classification and differentiated traceability, quickly locates the root cause of problems, greatly shortens the problem response time, and reduces the generation of defective products.

This application relates to the field of image recognition technology, and in particular to a method and system for detecting heat-sealing anomalies in industrial heat-sealing equipment. The method includes: acquiring the temperature matrix of the heat-sealing area of ​​the industrial heat-sealing equipment; extracting spatiotemporal feature information from the temperature matrix; training a dynamic temporal model based on the spatiotemporal feature information; using the dynamic temporal model to detect the real-time temperature matrix to determine whether abnormal pixels exist; if so, clustering and morphological processing are performed to determine whether heat-sealing anomalies exist. This application effectively overcomes the temperature baseline drift problem caused by factors such as equipment preheating, workshop airflow, and changes in ambient temperature, avoiding the high false alarm rate of traditional methods; and solves the problem of difficulty in collecting negative samples covering all defect types in industrial settings. While ensuring low resource consumption and high real-time performance, it significantly improves the accuracy, robustness, and generalization ability of detecting heat-sealing anomalies in industrial heat-sealing equipment.

The application discloses a low-noise current sampling and suppression system for capacity grading test, relates to the field of battery test, and comprises a main current sampling shunt, a main current sampling connecting copper bar, blind measurement wiring and an analog front-end compensation circuit; the main current sampling shunt is connected in series in a main circuit; one end of the main current sampling connecting copper bar is connected with the main current sampling shunt; the blind measurement wiring is arranged in parallel with the main current sampling connecting copper bar on the surface of a same test tray, and both ends of the blind measurement wiring are connected with the input end of the analog front-end compensation circuit; the analog front-end compensation circuit collects voltage signals from both ends of the blind measurement wiring, generates an inverted compensation signal through inversion processing, then superimposes the inverted compensation signal with the collected main sampling voltage signal to output a direct-current compensation voltage signal. The application solves the problem that the serious cumulative error of capacity calculation is caused by the direct-current drift noise of thermoelectric potential generated due to the space temperature gradient in the battery test.

The utility model discloses a filter screen life sensor, including the regular polygonal prism, the regular polygonal prism outer wall is evenly distributed with a plurality of through groove, and the regular polygonal prism lower surface fixedly connected with connecting column, and the connecting column is connected with fastener on screw thread, and the connecting column is provided with through -hole, and the through -hole is connected in the through groove, and the through -hole is provided with the installation slot in, is provided with the circuit board in the installation slot, and the circuit board top fixedly connected with sensor module, the utility model discloses through adding a plurality of through groove on the regular polygonal prism, constitutes the protection type detection cavity and the flow guide structure, and the interference of airflow turbulence to sensor module is effectively reduced, and the temperature compensation of pressure data is carried out to the data processing unit through temperature compensation subunit, and the influence that environmental temperature measures pressure is corrected, solves the problem of pressure measurement value drift, improves the calculation accuracy, and the filter screen life percentage is directly calculated through life calculation subunit, so that the monitoring result is more intuitive, and the user experience is improved.