340results about How to "Eliminate the effects of" patented technology

The invention provides a method for quickly establishing a three-dimensional near-seafloor speed model in a shallow sea area; the method comprises the following steps of extracting initial informationand extracting a common-center-point gather; calculating the slope of the initial travel time in the common-center-point gather; judging whether a shot point is located in the seawater layer or not,and if yes, correcting the shot point to the seafloor; calculating the speed and the depth of inflection points corresponding to respective offset distances; performing linear interpolation on the speed at each depth to obtain a one-dimensional speed model of the common center point; after all the common-center point domain gathers are processed, adopting the linear interpolation method, calculating the speed values of the rest grid points by utilizing the one-dimensional speed model of all common center points, and a speed model is output. By adoption of the method for quickly establishing the three-dimensional near-seafloor speed model in the shallow sea area, the influence of the seawater layer on ray propagation is overcome, and the influence of multiple excitation receiving modes on an inversion result is eliminated, and the problem that the conventional method needs to carry out multi-ray tracing forward modeling is avoided.

The invention belongs to the field of wastewater treatment and industrial automatic control, and particularly relates to an intelligent dosing control method based on water quality online monitoring. The method comprises the following steps: capturing a water body spectrum fingerprint spectrum by using a full-spectrum scanning module to obtain a characteristic signal sequence; a chemical informatics molecular algorithm is introduced for preprocessing and feature enhancement, and molecular fingerprint information is recognized; a convolutional neural network model is constructed to decouple chemical oxygen demand, ammonia nitrogen, total phosphorus and water toxicity indexes from the spectral signals, and multi-parameter parallel inversion is achieved; and based on the inversion index and the spectral dynamic trend, the dosage is calculated through an intelligent decision-making algorithm, and accurate dosing of the medicament is driven. According to the invention, through fusion of full spectrum scanning and deep learning, high-precision anti-interference water quality perception is realized, potential risks can be identified and preventive intervention can be carried out, and the intelligent level and economical efficiency of dosing control are improved.

A self-adaptive control method of an aircraft wing and the aircraft wing wherein the self-adaptive control method comprises: constructing a prediction model, inputting a real-time external aerodynamic disturbance parameter to the prediction model, predicting a predicted disturbance error at a next moment, and realizing feedforward prediction compensation of external aerodynamic disturbance. The influence of predictable disturbance on the airfoil profile is eliminated in advance; and then monitoring the airfoil pose to obtain tracking airfoil parameters, and carrying out deviation calculation on the tracking airfoil parameters and the target airfoil parameters to obtain an actual tracking error so as to provide a real-time airfoil pose feedback signal. And finally, the control assembly generates a control instruction based on the predicted disturbance error, the actual tracking error and the target airfoil profile parameter, the control instruction acts on the mechanical neural network to realize adaptive adjustment of the airfoil profile, and the airfoil profile continuously approaches the target airfoil profile neighborhood through a feedforward and feedback composite control mechanism.

This invention provides an electrostatic generation device for an atomizer. It solves the problem of poor spraying effect of the atomizer. When this utility model is used, the fan blows air through the water outlet pipe, and part of the airflow passes through the pressure tube into the water tank, continuously increasing the air pressure inside the water tank. The greater pressure forces the liquid inside the water tank into the inlet pipe and along the inlet pipe into the guide tube, spraying out from the guide tube in the direction away from the fan through the water outlet pipe. The liquid is electrified by the charged metal valve core, and the electrostatically charged liquid is sprayed out through the air outlet, forming electrostatically charged atomized particles. The spray can easily adhere to the object being sprayed, resulting in a higher spraying efficiency.

The application discloses a kind of landing gear inner tube surface scratch weak magnetic flaw evaluation method, its evaluation method includes the following steps: first need to carry out surface cleaning pretreatment to landing gear inner tube to be measured, and in the condition without additional excitation magnetic field, using geomagnetic field as natural excitation source, geomagnetic field environment calibration is carried out to landing gear inner tube surface, establishes background magnetic field baseline, according to the outer diameter size and surface curvature radius R of landing gear inner tube.The application adopts flexible carrier to carry multiple sensors, and good adhesion of sensor and inner tube surface is realized by adaptive layout mode, effectively overcome the influence of landing gear inner tube cylindrical surface curvature on detection signal consistency, improve the repeatability and reliability of detection, adopt the adaptive noise suppression method based on wavelet threshold, can retain weak scratch magnetic leakage signal characteristics while effectively filtering geomagnetic background noise and circuit noise, compared with traditional filtering method has better signal fidelity.

The invention relates to a method for rapidly determining the content of K.2. 2.2. 2 in an FDG card sleeve kit leacheate, and belongs to the technical field of radiopharmaceutical analysis. The method comprises the following steps: selecting a 1110 + / -5 cm <-1 > peak as a quantitative characteristic peak of K.2.2. 2, wherein the peak corresponds to symmetric stretching vibration of a C-O-C ether bond in a K.2.2. 2 molecule; selecting a 2253 + / -3cm <-1 > peak as an internal standard peak, wherein the peak corresponds to C = N triple bond stretching vibration of acetonitrile in the leacheate; preparing a K.2. 2.2. 2 gradient solution with the concentration of 0.05 to 5 mg / mL, and fixing the concentration of K2CO3 to be 0.5 to 2 mg / mL; the method comprises the following steps: acquiring a spectrum by adopting an ATR technology, setting the resolution ratio to be 4cm <-1 > and the scanning frequency to be 32, and establishing a K.2. 2.2. 2 linear model according to the ratio of A1110 / A2253; eliminating baseline drift by adopting a second derivative spectrum; and a PLS algorithm is adopted to correct trace interference of K2CO3.

The invention relates to a DICE-based anti-multi-node upset latch, which belongs to the field of anti-radiation reinforcement of integrated circuits and comprises an input circuit, a node holding and restoring circuit, a DICE circuit, a delay circuit and an output circuit. The input circuit consists of two input C unit circuits and is used for controlling signal input; the node holding and restoring circuit, the DICE circuit and the output circuit are used for transmitting and latching data; when the latch is radiated, the latch can tolerate multi-node flipping and restore; the delay circuit is used for recovering multi-node flipping of the DICE and the output circuit by using a delay signal; the multi-node upset resistant latch provided by the invention can realize a single-particle single-node and double-node instantaneous upset self-recovery function, and has the capability of resisting three-node single-particle upset, and meanwhile, the circuit structure is easy to realize.

The application discloses a handheld dust collector motor drive algorithm circuit heat dissipation integrated system and relates to the technical field of control systems.The system comprises a temperature acquisition module, an operating parameter acquisition module, a thermal distribution prediction module, an active thermal management control module and an adaptive adjustment module.The application combines multi-point temperature acquisition with a three-layer structure thermal distribution prediction model to comprehensively acquire the real-time thermal state of multiple key heating elements in the motor drive circuit, simultaneously considers the bidirectional heat conduction relationship between the elements, accurately calculates the net heat power of each element, and further generates a temperature prediction curve in a future time period.The method can comprehensively reflect the overall thermal distribution of the circuit, avoid the limitations caused by single-point detection, eliminate the influence of heat transfer between the elements on temperature prediction through heat conduction coupling calculation, realize early prediction of thermal risks, and provide reliable decision basis for active thermal management.

The application discloses a method for anti-electricity stealing based on abnormal connection of user single-phase electric meter, and relates to the technical field of electric power metering, which comprises the following steps: installing sampling units on the incoming line side and the outgoing line side of the user single-phase electric meter, synchronously collecting single-phase voltage, current, neutral line current and temperature and humidity signals of the meter box, and generating synchronous electrical data sequences through standardization and time stamp alignment. Single-phase voltage and current fundamental phase angles are calculated based on voltage and current instantaneous value sequences, and a phase angle difference map is constructed. The effective value of the neutral line current is calculated, and an abnormal flag sequence is generated in combination with a normal load reference range. The environmental temperature and humidity abnormal fluctuation period is extracted. The above-processed features are input into a connection mode recognition model to identify suspected electricity stealing connection mode categories, improve the accuracy of meter connection abnormality recognition, and reduce misjudgment. The method can effectively identify meter connection abnormalities and improve the accuracy of electricity stealing identification.

The invention relates to the field of phased radars, and discloses an active phased array radar calibration method, which is used for improving the accuracy of actually measured phase data. Comprising the following steps: calculating theoretical excitation phases of radiation units according to an antenna array physical geometric structure and a target beam directional angle; enabling the antenna to sequentially excite the radiation units and collect coupling signals in a single-channel mode, and performing analysis to obtain an actually measured amplitude, a phase and a phase deviation; synthesizing the theoretical excitation phase and the phase deviation to generate an actual emission phase, and constructing a phase compensation lookup table; and after compensation by using the lookup table, measuring the actual directional diagram, and if not, performing fine adjustment. The calibration precision and reliability are improved, and the high-precision detection requirement of the active phased array radar can be met.

The utility model belongs to the technical field of automobile brake equipment, concretely relates to a flange plate brake structure, including combination disc and the friction piece and brake caliper of setting on combination disc, combination disc includes first brake disc, second brake disc and circumferential connecting block, the circumferential connecting block is set as multiple blocks, and is fixed between first brake disc and second brake disc, first brake disc and second brake disc concentricity arrangement, multiple the circumferential connecting block is first brake disc or second brake disc as the center of circle and presents the circular distribution. The utility model discloses the cooperation structure of combination disc and friction piece, when brake caliper action, can make first half friction ring and second half friction ring on friction piece alternate and brake pad contact, realize the heat dispersion when continuous braking, again with the cooperation of rotating circumferential connecting block guarantee first brake disc and second brake disc heat conduction to first half friction ring and second half friction ring, reduce the heat saturation effect, keep stable brake effect.

The present specification relates to the technical field of fiber-optic gyroscopes, and discloses a reciprocal structure 3x3 fiber-optic gyroscope and a use method thereof, to solve the problems of poor anti-interference, complex calculation, and no consideration of the influence of temperature change on test results, poor environmental adaptability, and limited practicality of a typical non-reciprocal structure 3x3 fiber-optic gyroscope; three photoelectric detectors, a 2x2 coupler, a 3x3 coupler, a temperature sensor, and a signal processing module; the 2x2 coupler, the 3x3 coupler, the first photoelectric detector D1, the second photoelectric detector D2, and the third photoelectric detector D3 constitute a reciprocal structure 3x3 fiber-optic gyroscope optical path. The reciprocal structure 3x3 fiber-optic gyroscope extracts a reciprocal end output signal, uses the reciprocal end output signal as a reference quantity for differential demodulation, eliminates the influence of optical path loss variation and light source fluctuation on the gyroscope output signal, and greatly improves the anti-interference of the gyroscope system.

The present invention relates to an epoxy resin with improved water resistance and a composition comprising same and, more specifically, to: an epoxy resin which is prepared by the reaction of epihalohydrin and a diol component including anhydrosugar alcohol and a diol other than the anhydrosugar alcohol in a specific content ratio, thus exhibiting excellent eco-friendliness and improved water resistance, and, when applied to a coating composition, exhibits an anti-fog effect and at the same time can provide a coating with improved durability against moisture; and a composition comprising the epoxy resin (preferably, an anti-fog coating composition).

The application provides a head motion data determination method and device, the method comprising: obtaining reference frame point cloud data and current frame point cloud data of head motion; registering the current frame point cloud data based on the reference frame point cloud data to obtain current frame registration point cloud data; determining an expression estimation value according to the reference frame point cloud data and the current frame registration point cloud data; adjusting the current frame point cloud data according to the expression estimation value to determine current frame target point cloud data; and registering the reference frame point cloud data and the current frame target point cloud data to determine motion data. The application eliminates the influence of expression on target motion information and improves the reliability of motion data.

The invention relates to the technical field of visual inspection, and discloses a label surface pattern online detection device which comprises a main body box, detection tables are symmetrically arranged on the upper surface of the main body box, label bodies are placed on the upper surfaces of the detection tables, a supporting frame is arranged above the main body box, and a control box is fixedly installed at the top of the supporting frame; a detection head is fixedly connected to the bottom of the control box, a displayer is fixedly installed on the side face of the main body box, a leveling assembly is arranged above the detection table and comprises movable rolling wheels, the rolling wheels can roll along the surface of the label main body to level the surface of the label main body, and through the leveling assembly, after the rolling wheels are attached to the surface of the label main body, the surface of the label main body is leveled; the rolling device can roll along the surface of the label main body to flatten the surface of the label which may have wrinkles or bends, so that the influence of unevenness of the surface of the label on a detection result is eliminated, the surface of the label is in a flat state, and a detection head can accurately collect information of patterns on the surface of the label.

The application discloses a photovoltaic power station monitoring method and system based on three-dimensional image modeling and virtual simulation fusion, relates to the technical field of image modeling, and comprises the following steps: generating a reflection response graph according to an original inspection graph of a photovoltaic power station, sequentially performing adaptive threshold segmentation and morphological processing on the reflection response graph to obtain a candidate reflection graph of a screen; performing skeleton extraction on the candidate reflection graph of the screen to obtain a candidate highlight skeleton graph, screening out attached edge pixel points according to a skeleton pixel point set in the candidate highlight skeleton graph, connecting the attached edge pixel points to obtain an edge traction sliding graph; generating a basic outer adjacent band according to a three-dimensional model of a station of the photovoltaic power station, performing region merging on the basic outer adjacent band to obtain a grounding conductor layout band, and performing projection on the grounding conductor layout band to obtain a virtual screen corridor projection graph; and the application improves the reliability of a photovoltaic power station monitoring result.

The application discloses an automatic analyzer for detecting aniline compounds in liquid and a determination method, and realizes automatic and rapid determination of aniline compounds in liquid samples through the design, connection and control of flow paths and structures, and the analysis processes such as automatic sampling, reagent adding, mixing reaction and spectrophotometric detection, so that reagent consumption and waste liquid discharge are reduced, and the analysis detection sensitivity, accuracy and precision are improved.

The invention discloses a dynamic event triggering preset time fault-tolerant control method considering a non-affine fault. The method comprises the following steps: carrying out online approximation on an unknown nonlinear term in a dynamic decoupling model by adopting a fuzzy logic system to obtain an optimized system model; constructing a segmented preset time performance function, and introducing an instruction filter based on a dynamic surface control technology to process a virtual control signal of the constructed adaptive virtual control law so as to obtain a filtering error; constructing a dynamic signal compensation mechanism based on the filtering error in combination with a sectional preset time performance function, and obtaining a compensated final tracking error; and constructing a dynamic event triggering mechanism to obtain a final fault-tolerant controller, and realizing dynamic event triggering preset time fault-tolerant control considering the non-affine fault according to the final fault-tolerant controller. According to the method, the technical problems of uncontrollability of convergence time, influence of actuator faults and nonlinearity on control performance and limitation of communication and computing resources in the existing method are solved.

The invention belongs to the technical field of laser Raman gas analysis and detection, and particularly relates to a zero drift suppression and ray interference resistance method for laser Raman gas detection. According to the method, the interference of noise and cosmic rays in the laser Raman gas quantitative detection process can be reduced, so that the precision of a laser Raman gas quantitative detection result is relatively high, a data abnormal phenomenon hardly exists, and the probability of zero drift can be reduced. According to the method, the influence caused by noise and cosmic rays can be eliminated in a large probability.

This invention discloses an intelligent exercise assessment and early warning system based on multi-source biosignal fusion, belonging to the field of exercise risk early warning technology. It collects multi-source data, including electromyography (EMG), heart rate, blood oxygen, skin conductance, and acceleration, from various wearable sensors to assess muscle fatigue, cardiovascular load, exercise status, and environmental factors. After preprocessing, the system uses quantitative models such as the muscle fatigue correction index and the cardiovascular load dynamic coefficient to calculate a comprehensive exercise risk early warning index by integrating physiological state and environmental factors. This results in a normalized risk classification, corresponding to low, medium, and high risk levels and marked with different color icons. This system overcomes the limitations of single signals, considering the synergistic effects of multi-dimensional physiological indicators and the influence of environmental factors, improving the accuracy of assessment in complex scenarios. It can effectively intervene before risks develop and is suitable for scenarios such as mass fitness and professional training. It is integrated into lightweight wearable devices without interfering with the exercise process.

The application provides a delay test system and method based on a Hall switch device, comprising: a magnetic field generation module containing a programmable current source and a coil to generate a precisely controlled magnetic field change; a temperature control module integrating a temperature sensor and a heating / cooling device to realize constant temperature or temperature scanning test; a signal acquisition module using a high-frequency sampling device to collect Hall device output signals; a data processing module using an embedded processor to realize automatic threshold detection and delay calculation; a general test interface using a test seat with replaceable probes to adapt to different packaged devices; a digital communication interface using an SPI or I2C interface to output test results; in the application, the main structures include a magnetic field generation module, a temperature control module, a signal acquisition module, a data processing module, a general test interface, a digital communication interface and a threshold calibration module, and these modules cooperate with each other to provide a solid foundation for precisely testing the delay characteristics of the Hall switch device.

Embodiments of the present application provide a traffic sign recognition method, an electronic device, a storage medium and a program product. The method comprises: obtaining attribute information of multiple traffic signs on the same road from map update data; determining corner point road coordinates and sign face projection areas of the multiple traffic signs in a road coordinate system according to the attribute information; performing clustering processing on the multiple traffic signs according to the corner point road coordinates and the sign face projection areas, to obtain multiple target clustering clusters; for each target clustering cluster, determining a target type of a target traffic sign based on the corner point road coordinates and the sign face projection areas of the target traffic sign included in the target clustering cluster; and the target type is a side-by-side combined type or a composite combined type. The method is used to improve the recognition accuracy of traffic signs.

The utility model provides a kind of adjustable shock-absorbing pedestal for axial flow fan, including two interval and mirror image symmetry setting fixture plate, two the fixture plate vertical setting, adjustable assembly is connected in the upper portion of two the fixture plate, two the fixture plate is moved under the driving of adjustable assembly Face or mutually diverging;Two the fixture plate is respectively connected with the flange of the both ends of axial flow fan.The utility model provides a kind of adjustable shock-absorbing pedestal for axial flow fan, can effectively control fan pedestal length, so that the error caused by equipment ontology manufacturing or pedestal manufacturing can be reduced, so that the situation that pedestal cannot match fan.

This invention belongs to the field of stress-strain testing technology, specifically relating to a welded strain gauge for nuclear power plant testing. Both the strain gauge and the terminals are mounted on a metal base. The strain gauge consists of a main strain gauge and a compensating strain gauge. The strain gauge and the terminals are connected by wires. Measuring wires are also connected to the terminals. Measuring wire one has a male connector, and measuring wire two has a female connector. Measuring wire one and measuring wire two are connected via the male and female connectors. Measuring wire two is connected to a compensating bridge box. The compensating bridge box contains two precision resistors, forming a Wheatstone bridge with the main strain gauge and the compensating strain gauge on the metal base. This invention is used for stress-strain measurement on the surface of pressure vessels such as nuclear power pressure pipelines.

The present application belongs to the field of mine geophysical prospecting, and discloses a kind of interference factor correction method for advanced detection of electrical method with tunneling, which is characterized by the following steps: step 1, electrical method data acquisition with tunneling; step 2, eliminating random noise interference of apparent resistivity data; step 3, eliminating the influence of side anomalies; step 4, eliminating the influence of layered medium and roadway cavity; step 5, eliminating local distortion of curve; step 6, restoring apparent resistivity. The present application can eliminate the influence of side anomalies, and simultaneously eliminate the influence of layered medium and roadway cavity; while eliminating the influence of interference factors, it also better preserves the abnormal response information of water hazard hidden danger in front of tunneling head, realizing high-fidelity extraction of abnormal response information of water hazard hidden danger in front of tunneling head.

The invention provides a radar point cloud-based foreign object intrusion detection method and system in a working area, and the method comprises the steps: setting a detection area range according to the working space of a mechanical connecting rod, and dynamically generating a direction bounding box (OBB) of the connecting rod through obtaining the posture state information and size data of the working connecting rod in real time; spatial screening is carried out on original radar point cloud data, only point cloud data which are located in a detection area and are not located in an OBB are reserved, and background point clouds outside the detection area and point clouds generated by a connecting rod are filtered out; and performing multi-dimensional anomaly detection on the filtered point cloud data, and comprehensively judging whether a continuously existing foreign object intrusion event exists or not. Through a linkage mechanism of point cloud filtering, background modeling and clustering verification, high-precision, low-false-alarm and real-time industrial intrusion detection is realized, and the problems of poor adaptability, high false alarm rate and the like of a traditional method in a complex environment are solved.

The application provides a kind of dynamic road pattern-based road health state monitoring method, system and equipment, its method includes: based on the grating array sensing network in road section obtains the initial dynamic road pattern of road under vehicle excitation;Obtain the reference dynamic road pattern of road in reference state, based on reference dynamic road pattern, initial dynamic road pattern is normalized, and dynamic road pattern is obtained;Dynamic road pattern is the state response variation curve of structural excitation along the road mileage position variation and change characteristic;Based on dynamic road pattern and reference dynamic road pattern, determine whether there is non-normal pavement damage, roadbed emptying and non-uniform settlement and other diseases in road.The application uses the whole vibration or strain response of road to construct the dynamic road pattern, considers the overall structural characteristics of road, improves the relevance of dynamic road pattern and road health state, and then can realize the purpose of accurately monitoring the road health state based on dynamic road pattern, improves the accuracy and real-time performance of road health state monitoring.

This application provides a method and related equipment for extracting technical problems from patent documents. The descriptions of technical problems appearing in the patent content section and the background art section of the target patent document have different semantic characteristics. The patent content section includes the invention content and the invention description. Based on the semantic characteristics of sentences with fixed expressions in the patent content section, a technical problem extraction model is pre-constructed. This model is used to extract technical problems from the patent content section, avoiding the direct extraction of technical problems from the background art section. This eliminates the impact of paragraph differences between the patent content section and the background art section on the technical problem extraction model, thereby improving the effectiveness and accuracy of technical problem extraction.

This disclosure provides a neural microelectrode with temperature regulation and temperature measurement functions, which can be applied in the field of microelectromechanical systems (MEMS) biosensor technology. The neural microelectrode includes: a substrate including a detection region; a microfluidic channel disposed within the substrate and overlapping with the detection region, the microfluidic channel being used to transport liquid; a microelectrode array disposed on the substrate and overlapping with the detection region, the microelectrode array being used to measure the electrical signal of the detection region; a temperature measuring element disposed on the substrate and overlapping with the detection region, the temperature measuring element being used to measure the temperature of the detection region; and an insulating layer disposed on the microelectrode array and the temperature measuring element, covering the microelectrode array and the temperature measuring element. This disclosure integrates temperature regulation and temperature measurement functions into a single microelectrode, enabling simultaneous temperature control of neurons and recording of neuronal electrical signals, as well as real-time measurement of neuronal temperature.

The utility model relates to a kind of diffusion preventer anti-deformation fixing device for micro-hole processing in the field of diffuser micro-hole processing technology, including support fixed platform and edge fixed component, support fixed platform is used to support the bottom surface of diffuser from the lower part of diffuser fixed diffuser, prevent diffuser from downward deformation or upward deformation, edge fixed component is used to compress the edge part of fixed diffuser, prevent the edge part of diffuser from upward or lateral deformation, the diffuser to be carried out micro-hole processing is compressed and fixed by support fixed platform and edge fixed component, by pressing the deformation of diffuser in micro-hole processing process, and then eliminate the influence of residual stress in diffuser processing on micro-hole processing, simple operation and less time-consuming.