481results about How to "Improve anti-interference ability" patented technology

This invention provides a method for rapid assembly of a modular tubular beam car body. The car body is divided into several independent modules, which are manufactured in parallel at independent workstations or assembly lines. Corresponding connections between different independent modules are fitted with interlocking mortise and tenon structures for coarse positioning and fastening. The manufactured independent modules are then automatically transferred to an assembly station, where a robot grasps and rapidly assembles them. After assembly, bolts and / or structural adhesive are used to fasten the mortise and tenon joints. Compared to traditional assembly line production processes, this method significantly improves efficiency and economy, effectively reduces floor space, and overcomes the limitation of existing "unpacking processes" that are only suitable for single-model production, thus facilitating flexible manufacturing and rapid iteration across multiple models.

The application provides an environment simulation air extraction device cooperative optimization control method and system based on cooperative differential game, comprising the following steps: step 1, a dynamic model of the air extraction device is established. Step 2, the air supplement valve and the plurality of inlet valves are regarded as game participants, and a pressure-pressure ratio multi-objective optimization model based on cooperative differential game is constructed. Step 3, an approximate dynamic programming algorithm-critical neural network is combined to obtain an approximate Pareto optimal solution of the established game optimization model. Step 4, a cooperative optimization controller is designed: the inlet valve adopts PI control combined with a filter and an optimization item to realize cooperative control of pressure and pressure ratio. Step 5, on a multi-compressor parallel simulation platform, various complex working conditions such as valve leakage and compressor failure are set to verify the robustness and superiority of the algorithm. After the application of the technical scheme, the speed, robustness and anti-interference ability of the system based on the cooperative differential game cooperative optimization control algorithm are significantly improved.

This invention relates to the field of force sensor technology, and more particularly to a pressure-balanced underwater six-dimensional force sensor sealing structure and method. It primarily addresses the problems of insufficient sealing pressure resistance and susceptibility to seawater leakage when existing six-dimensional force sensors are applied in underwater scenarios, and the fact that high underwater pressure can cause deformation of the main structure, interfering with strain measurement and leading to force signal deviation. The proposed technical solution includes a force sensor body, with a mounting plate installed at the output end of the force sensor body, and an elastic element disposed at and penetrated by the elastic element at the output end of the force sensor body; a sealing element disposed on the side of the force sensor body away from the elastic element, the sealing element being made of rigid or elastic material. The force sensor body, the elastic element, and the sealing element form a sealing structure that encloses the deformable beam and the PCB board. This invention can improve its underwater sealing pressure resistance and anti-interference capability, ensure force measurement accuracy, and assist underwater robots in precise operation.

The invention discloses an ontology recognition method and device oriented to a decision knowledge graph, and the method comprises the steps: carrying out the ontology knowledge extraction of text data of a decision-related field, and obtaining an ontology text set; the ontology text set comprises an attribute text set and a rule text set of each ontology; the attribute text set comprises various attribute texts; the rule text set comprises various rule texts; preprocessing the ontology text set to obtain a preprocessed text data set; performing ontology type identification processing on the text data set of each ontology in the preprocessed text data set to obtain a type identification result of each ontology; the type of the ontology comprises a fact type ontology, a rule type ontology and a decision type ontology.

The utility model relates to a cold -air machine with adjustable pedestal, including cold -air machine body, the pedestal that is fixedly arranged below cold -air machine body, the pedestal includes the square board that is arranged below cold -air machine body, the adjusting device that is arranged on the square board, a plurality of support legs that are fixedly arranged below the square board, the wheel that is respectively arranged on a plurality of support legs, the adjusting device includes the first motor that is fixedly arranged below the square board, the first gear that is fixedly arranged in the first motor output, the second gear that rotatably arranged below the square board and is engaged with the first gear, the carousel that is fixedly arranged on the second gear, the drive mechanism that is arranged on the carousel is used to drive the up-and-down swing of cold -air machine body. Use this cold -air machine, and cold -air machine body can swing up and down while carrying on autogyration, two kinds of movement modes do not interfere with each other, realize compound air supply mode, significantly increase the coverage area and air disturbance of cold air, promote the mixing and diffusion of cold air and indoor hot air, accelerate the overall cooling speed.

This invention discloses a co-integrated device for a low-crosstalk RF front-end and array antenna for millimeter-wave radar, comprising a main board, a shielding plate, an RF module, and an array antenna module. The shielding plate is horizontally positioned above the main board, and a frame is provided outside the shielding plate. Support columns are vertically mounted at the four corners of the frame and between the shielding plate and the main board. A sub-plate is mounted on the surface of the shielding plate, and the array antenna module is mounted on the surface of the sub-plate. An antenna cover is mounted on the sub-plate to cover the array antenna module. The RF module is mounted on the side of the main board away from the shielding plate, and the pins of the RF module are soldered and fixed to the main board. Pressure bars are provided on both sides of the pins to hold them in place. This invention has a simple structure and actively manages and reduces electromagnetic crosstalk between the array antenna and the RF front-end through a combination of increased distance, physical shielding, and adjustable position; at the same time, the pin-fixing structure enhances the mechanical reliability of the RF module.

This invention relates to the field of electroplating solution analysis technology, and in particular to a rapid analytical method for polyethylene glycol (PEG) additives in copper electrodeposition solutions. The method involves protonated PEG forming a macromolecular complex colloid with phosphomolybdate under acidic conditions of pH 1.0–2.0. This colloid exhibits maximum absorption at 372 nm, and the absorbance value is directly proportional to the PEG concentration in the formed complex colloid. This allows for quantitative analysis of PEG in the copper electrodeposition solution. Because the phosphomolybdate-PEG complex colloid selected in this invention has excellent selectivity, and no sample pretreatment is required, this invention offers advantages such as ease of operation, speed, high sensitivity, and good selectivity. It is particularly suitable for intermediate control analysis in production environments, such as for electroplated copper interconnects in chips and printed circuit boards, as well as electrolytic copper foil for negative electrode current collectors and copper-clad laminates in energy storage batteries.

The application discloses a data latch circuit and an integrated circuit comprising the same, which comprises a sampling module and a level conversion module, the sampling module comprising a data end, an enable end and a capacitor C2, the data end being used for receiving backup data, the enable end being used for receiving an enable signal, the sampling module being configured to selectively charge or discharge the capacitor C2 according to the backup data when the enable signal is at a high level, and cut off the charging and discharging path of the capacitor C2 when the enable signal is at a low level, and the level conversion module being used for converting the level state stored by the capacitor C2 into a standard digital level for reading by a digital processing module in a power supply module power-on stage. The data latch circuit utilizes the charge storage characteristics of the capacitor C2 itself, locks and keeps the data before power failure, and can directly read the backup data after the power supply is re-powered, so that the whole system can quickly recover to the stable working state before power failure.

The utility model provides a zero live wire power isolation circuit and double manganese copper measurement equipment relates to power isolation field. This zero live wire power isolation circuit includes current doubling circuit, first rectifier circuit and second rectifier circuit, and current doubling circuit first input end connects GND, second input end connects UN, first output end connects the input end of first rectifier circuit, second output end connects the input end of second rectifier circuit, and current doubling circuit is used for isolating first output end and second output end, the output end of first rectifier circuit connects VBB, the output end of second rectifier circuit connects MHVDD, and first rectifier circuit and second rectifier circuit are used for voltage reduction. The utility model provides zero live wire power isolation circuit design is compact, and simultaneously uses conventional electrical component, and production cost is low.

The application discloses an electrochemical sensor and a preparation method and application thereof. The electrochemical sensor comprises a three-electrode system composed of a working electrode, a reference electrode and a counter electrode, wherein the working electrode is composed of a base electrode, a molybdenum disulfide nanoparticle modification layer and a polyethylene dioxythiophene layer; the molybdenum disulfide nanoparticles are loaded on the surface of the base electrode through a drop coating method, and the polyethylene dioxythiophene is in-situ loaded on the surface of the molybdenum disulfide nanoparticle modification layer through an electro-polymerization reaction. The electrochemical sensor can be used for detecting lead ions in water bodies, has the advantages of simple preparation, stable performance, suitability for an acidic medium and the like, and is suitable for practical application and popularization.

The utility model belongs to circuit board technical field especially is a kind of multilayer formula interlaced circuit board, including first circuit board and second circuit board, the below of first circuit board is provided with second circuit board, the top of first circuit board is fixedly connected with electronic component, the top of first circuit board is respectively provided with mounting hole around, the right side top of first circuit board is fixedly connected with power interface, the front and back of first circuit board is respectively provided with conducting wire belt, the front and back top of first circuit board is respectively provided with electricity connection hole, the top of first circuit board is provided with isolation component around.The utility model passes through first circuit board, second circuit board, power interface, electronic component, guide tape, electricity connection hole, realizes the two-way communication and collaborative work between two circuit boards, and can prevent electronic component from being damaged or circuit connection unstable due to external force shaking.

The utility model relates to a kind of safety protection structure of grinding machine, including the protective cover being set on workbench, grinding head is equipped in protective cover, grinding head is driven by grinding head driving device, operating door and safety lock are equipped on protective cover, safety lock includes controller, first lock body is installed on protective cover, second lock body is installed on operating door, locking piece for locking;The controller is electrically connected with grinding head driving device, for receiving the start-stop machine signal of grinding head driving device;Locking piece has the locking state of the mutual locking of first lock body and second lock body, and, locking piece has the unlocking state of the relative displacement of first lock body and second lock body;The controller is electrically connected with the locking piece, for controlling the action of locking piece, realize the switching between locking state and unlocking state.Safety lock identifies the start-stop signal of driving device by controller, grinding head starts, safety lock maintains locking state, operating door cannot be opened relative to protective cover, ensure worker operation safety.

The application discloses a thin-wall cylindrical fiber hydrophone with an internal acoustic wave diffraction structure and belongs to the technical field of acoustic wave detection, and solves the technical problem of low axial acoustic wave absorption utilization rate of an existing hydrophone. The fiber hydrophone comprises a thin-wall metal cylinder, a sensing optical fiber, a fixed end cover and a diffraction-negative Poisson ratio composite internal structure coaxially arranged in the cylinder, the composite internal structure comprises an acoustic wave diffraction unit and a negative Poisson ratio amplification unit. The acoustic wave diffraction unit guides and diffracts the axial incident acoustic wave to the negative Poisson ratio amplification unit; the negative Poisson ratio amplification unit generates axial deformation under the action of sound pressure and efficiently converts the axial deformation into radial force through the negative Poisson ratio structure, drives the thin-wall metal cylinder to generate radial deformation, and further drives the sensing optical fiber to generate strain. The application can significantly improve the absorption utilization rate and axial sensitivity of the axial acoustic wave, meanwhile, the original radial high sensitivity is maintained, and the omnidirectional detection performance of the hydrophone is improved.

The application discloses a relay driving circuit, comprising a power module, a starting switch, a main control module and a switch module, the power module is used for providing stable working voltage for the system, the starting switch is used for outputting a starting signal of the relay, a control signal input end of the main control module is connected with the starting switch, the main control module is used for outputting a corresponding pulse driving signal according to the starting signal, an input end of the switch module is connected with a control signal output end of the main control module, an output end of the switch module is electrically connected with the relay, and the switch module is used for driving the relay to work according to the pulse driving signal. The switch module of the application can drive the relay to work according to the pulse driving signal, compared with the traditional relay directly driven by the switch, when the program of the main control module runs out of control or crashes, the pulse driving signal will stop outputting, thereby stopping driving the relay and making the load stop working, and further preventing the household appliance from burning or the occurrence of safety accidents.

The invention relates to a high-sensitivity MEMS flow sensor and a manufacturing method thereof.The high-sensitivity MEMS flow sensor comprises a sensor chip, a metal base and a measuring runner, the sensor chip comprises a substrate, and a porous silicon area is formed in the substrate; the first dielectric layer is formed on the substrate and the upper surface of the porous silicon region; the heating resistor array is formed on the upper surface of the first dielectric layer and is positioned right above the porous silicon region; the thermopile array is formed on the upper surface of the first dielectric layer and located over the porous silicon area, and the thermopile array and the heating resistor array are alternately arranged in the direction of the gas flow channel; the electric isolation layer covers the heating resistor array and the thermopile array; the metal interconnection structure is formed on the upper surface of the electric isolation layer and is connected with the thermopile array; the electrode is connected with the metal interconnection structure; and the second dielectric layer covers the electrical isolation layer and the metal interconnection structure. A multi-pair symmetrical distribution structure in which the thermopiles and the heaters are alternately arranged is adopted, so that the measurement sensitivity of the flowmeter is remarkably improved.

The application discloses a kind of conformal array rotation interference amplitude-phase error correction design methods, first, construct rotating array signal receiving model, according to the radius of rotating platform and angular velocity calculation rotating guide vector, construct rotating array channel amplitude-phase error model, correction source incident signal information acquisition, record the rotation angle of precision turntable;Covariance matrix is solved to the received data and eigenvalue decomposition, construct amplitude-phase error calculation equation;Solve amplitude-phase error matrix, construct amplitude-phase error correction matrix and correct the received data;Solve adaptive weight vector, and weighted output is carried out to the corrected data.The application compared with traditional array amplitude-phase error correction scheme, system structure is simple and easy to realize, without specific algorithm can be completed to the amplitude-phase error caused by array receiving channel is accurately corrected, effectively solve the receiving channel mismatch problem, improve array anti-interference performance.

The utility model discloses a device for synchronously controlling a withdrawal and straightening machine and a dummy bar of a continuous casting machine. The device comprises a potentiometer, a PLC (Programmable Logic Controller) control system, a signal isolation module, a withdrawal and straightening machine frequency converter, a dummy bar frequency converter and a digital display instrument. The potentiometer is connected to an analog quantity input port of the PLC control system through the one-input one-output optoelectronic isolator and is used for inputting an initial control signal; the output end of the PLC control system is connected with the withdrawal and straightening machine frequency converter and the dummy bar frequency converter to drive the two frequency converters to operate. A feedback signal of the withdrawal and straightening machine frequency converter is divided into two paths to be transmitted to the PLC control system and the withdrawal and straightening machine digital display instrument through the one-input two-output isolator, and a feedback signal of the dummy bar frequency converter is directly accessed to the dummy bar digital display instrument. The device eliminates electromagnetic interference through a photoelectric isolation module, integrates a water distribution model and a molten steel temperature data interface, adopts a standardized interface design for hardware, is adaptive to different continuous casting machine models, has the characteristics of strong anti-interference capability, stable signal transmission and visual real-time monitoring, and effectively improves the operation reliability of equipment.

The application discloses a kind of full-process supervision systems based on visual offline identification, and the application relates to component production technical field, it is solved that existing technology mostly stays in single size comparison level, lack of the problem of full-process integrated supervision mechanism from model generation, standard matching, automatic splicing to assembly verification, the unified check feature of the present application is constructed by built-in midpoint, plane midpoint and feature vector, corresponding three-dimensional standard model can be matched from model database quickly and accurately, the identification logic is stable, and the anti-interference is strong, effectively avoid the model mismatching problem caused by similar appearance;Through the vector comparison of reference feature and component feature, length difference and included angle calculation, the assembly accuracy can be quantitatively judged, and the assembly standard, correctable and substandard state can be distinguished, the visualization and digitization of assembly quality are realized, the on-site quick error correction and traceability are facilitated, and the assembly reliability and overall production quality of flow line are effectively improved.

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.

This invention discloses a detection-enhanced multi-target vehicle tracking method based on feature repair and relationship optimization. Video frames are input into a backbone network to extract shared features, constructing degraded observation features and reference features. The reference features are then subjected to mask-guided forward diffusion, combined with degraded observation features for reverse denoising to obtain repaired features. After uncertainty evaluation, these repaired features are adaptively fused with the degraded observation features to obtain fused features. The fused features are input into a detection decoder to generate a detection embedding. This embedding is then combined with historical tracking embeddings to model local competition relationships, resulting in an optimized detection embedding. The optimized detection embedding and historical tracking embeddings are input into a joint decoder, and the trajectory is updated by a trajectory management module. The tracking result is output, and the tracking embedding for the next time step is generated. The model is trained using low-light and partially occluded datasets, and the results are visualized. This invention's method exhibits strong detection discriminative power and tracking stability in multi-target vehicle tracking under low-light and partially occluded environments.

The application discloses an unmanned aerial vehicle wireless charging coupling system, a coil winding method and an unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicle charging. The charging coupling system comprises a transmitting device and a receiving device, the transmitting device comprises a transmitting coil, the receiving device comprises a receiving coil, and further comprises a landing device, the receiving device is arranged on the landing device, and the transmitting device is arranged in a parking area; the transmitting device comprises a ferrite, the ferrite comprises a connecting portion and a stepped symmetrical protruding structure extending outward at the end of the connecting portion, the ferrite as a whole is in a U shape, and the transmitting coil is wound vertically in the U-shaped structure of the ferrite; the receiving device comprises a soft magnet, the receiving coil is wound on both sides of the landing device, a rectangular gap is arranged in the middle of the receiving coil, the soft magnet is arranged in the rectangular gap, and the lower part of the soft magnet is attached to the lower part of the rectangular gap. The coupling system has small space occupation, large coupling coefficient, can realize efficient energy transmission, and is convenient to install and does not affect the flight performance of the unmanned aerial vehicle.

The utility model relates to remote monitoring control technical field discloses a kind of remote monitoring control device for EIGA equipment, including total data processing mechanism, the end of total data processing mechanism is provided with probe mechanism, the probe mechanism includes frame component, the surface of frame component is connected with the end of total data processing mechanism, the inside of frame component is provided with self-cleaning component, the self-cleaning component includes outer extension cylinder, the surface of outer extension cylinder is provided with air hole, the inner wall of air hole is fixedly connected with dust baffle, the outer surface of outer extension cylinder is fixedly connected with helical rib, the inner wall of outer extension cylinder is rotatably connected with baffle. In the utility model, self-cleaning design reduces the interference of dust to monitoring, without disassembly cleaning, the layout of multiple probe multiple type monitoring element realizes multi-region multidimensional synchronous monitoring, hierarchical data processing and transmission mode according to demand networking, reduce data transmission volume and total control operation pressure.

The application discloses an anti-interference frame synchronization method in high-speed frequency hopping communication, equipment and medium, the anti-interference frame synchronization method in high-speed frequency hopping communication includes: combining interference detection based on communication receiving end and single synchronization pulse correlation value multi-feature joint decision, constantly interference detection is carried out to receiving end synchronization pulse signal, and the position of interference point is marked, according to the number of non-interference marked points in synchronization pulse and the synchronization correlation value calculated from non-interference marked points and the threshold value set, multi-feature joint decision is carried out, to carry out error correction processing to the correlation value of current pulse, and the accumulation of multiple synchronization pulse correlation values, by setting reasonable threshold, the correct frame synchronization position is finally detected. The application can be in the case where interference exists, through interference detection and single pulse correlation value multi-feature joint decision technology, can realize the great improvement of anti-interference frame synchronization performance under the premise of not increasing additional resources.

This invention provides a rapid colorimetric reagent for the detection of manganese and iron ions. The reagent consists of carbon dots, a 3,3′,5,5′-tetramethylbenzidine solution, and a phosphate buffer solution. The reagent itself is a brown, transparent solution. When manganese ions are added to the 3,3′,5,5′-tetramethylbenzidine solution and phosphate buffer solution, it turns blue (visible to the naked eye) upon irradiation with a 365 nm UV lamp; upon contact with iron ions in the 3,3′,5,5′-tetramethylbenzidine solution, it turns dark green (visible to the naked eye). This reagent exhibits an extremely low detection limit and good selectivity. The detection process does not require complex analytical equipment, enabling rapid trace detection of manganese and iron ions. The reagent is simple to prepare, overcoming the shortcomings of cumbersome and expensive synthesis of manganese and iron ion detection probe molecules, and providing effective technical support for trace detection in food safety.

This invention relates to a center detection system and method for defocused lenses. The system comprises an optical system consisting of a light source module, a beam splitter, a lens holder, a first imaging module, and a second imaging module. The light source module, lens holder, beam splitter, and first imaging module are arranged sequentially along the direction of signal beam propagation, while the lens holder, beam splitter, and second imaging module are arranged sequentially along the direction of reflected beam propagation from the lens under test. Therefore, the light emitted by the light source module is transmitted through the lens under test and received by the first imaging module for Hartmann detection imaging of the lens. Simultaneously, the beam reflected by the lens under test is captured by the second imaging module and imaged to obtain a reflection information map. This system not only has the function of real-time identification of the optical center of the main lens and calculation of the lens refractive power parameters, but also imaging of the microstructure of the defocus area and markings printed on the lens surface, thereby realizing the function of identifying and marking the geometric center of the defocused lens microstructure.

This invention relates to the field of machine vision technology and discloses a robust extraction method for the center line of structured light in fillet welds. It aims to solve the problem of missegmentation and loss of corner features caused by traditional algorithms relying on geometric connectivity segmentation under strong arc light and high reflectivity interference. The invention first obtains a light stripe backbone mask through multi-scale morphological filtering and clustering screening; secondly, it constructs a scattered data pool by performing global coarse extraction within the mask; subsequently, it uses a sequential random sampling consensus algorithm to adaptively extract the equations of the upper and lower main lines and calculate the theoretical intersection point through a "fit-stripping" iterative mechanism; finally, it extends along the main line towards the intersection point and performs independent pixel grayscale thresholding and sub-pixel fine extraction within a local window of the original image. This invention completely eliminates the risk of missegmentation, accurately repairing large-scale reflective fractures while perfectly preserving and reconstructing the sharp corner features of the fillet weld.

This invention relates to a fluid velocity and flow rate detection device, and pertains to the field of fluid detection technology. The device includes: a fixed small steel plate and an elastic sensing unit; both the fixed small steel plate and the elastic sensing unit are disposed inside the fluid pipe to be detected; wherein, the lower end of the fixed small steel plate is fixedly connected to the inner wall of the fluid pipe, and a fixing part is provided at its upper end; the elastic sensing unit includes at least two elastic steel plates, one end of each elastic steel plate converging and connecting to the fixing part, and the elastic steel plates are radially distributed with the fixing part as the center; a first sensor is assembled at the other end of each elastic steel plate. This invention has a wide range of applicable media, strong anti-interference ability, and stable detection.

This invention belongs to the field of digital holographic imaging and artificial intelligence technology, specifically a holographic particle recognition method based on EFPFNet. While maintaining the traditional holographic optical path structure, this invention addresses the problems of low target contrast, blurred edges, and strong background interference in micro-nano particle holograms. Unlike the traditional approach of directly transferring general target detection models, it proposes a neural network architecture specifically for holographic image features: employing an edge feature convolution (EFC) module and a particle focusing mechanism (PFM) module to enhance the perception of weak particle diffraction features and suppress complex background noise, respectively; and using simulation data generated based on a physical model as the training set, effectively solving the problem of scarce real labeled data. This method possesses high detection accuracy, high robustness, and excellent generalization ability, and can be applied to target detection scenarios such as biomedicine and industrial inspection without significantly increasing optical hardware costs or detection time.