15results about How to "Improve application adaptability" patented technology

The present application relates to the technical field of gait analysis, and discloses a gait plantar pressure intelligent prediction system based on a Transformer structure, which comprises a gait collection platform, a plantar pressure collection device, a gait kinematics collection device, a central processing server and a display terminal. The system obtains initial plantar pressure distribution through a lower limb multi-rigid-body chain biomechanical model and foot-ground contact mechanics solution; and constructs a gated prefix memory sliding window Transformer in the central processing server, performs time series modeling and spatial correction on the initial pressure matrix and gait characteristics, and generates plantar pressure prediction results conforming to the biomechanical law. The system effectively solves the problems of unstable prediction, weak generalization ability and lack of interpretability of traditional methods, realizes higher-precision plantar pressure prediction, and can be used for gait evaluation, rehabilitation training and orthosis customization.

The utility model relates to astronomical observation equipment technical field provides a single -way multi -star simulation structure, including support and lens barrel, the lens barrel includes first sub -cylinder and second sub -cylinder, first sub -cylinder and second sub -cylinder, first sub -cylinder is provided with camera lens subassembly away from one side of second sub -cylinder, and the detachable connection between camera lens subassembly and first sub -cylinder, second sub -cylinder is provided with the insert piece seat away from one side of first sub -cylinder, and the detachable connection between insert piece seat and second sub -cylinder, the insert piece seat is provided with the mounting seat away from one side of second sub -cylinder, be provided with the light source on the mounting seat, be inserted and arranged the insert piece on the insert piece seat, the utility model can effectively improve the convenience of structural adjustment, improve the operation efficiency while, reduce the mechanical error produced in the repeated dismounting process, guarantee accurate simulation.

The invention relates to the technical field of chemical synthesis, and discloses a PMMA impact modifier and a preparation method and application thereof.The PMMA impact modifier comprises a core layer, a transition layer and a functional shell layer, the core layer is sequentially coated with the transition layer and the functional shell layer, the core layer is a soft monomer crosslinking layer, the transition layer is a soft monomer and hard monomer crosslinking layer, the functional shell layer is a hard monomer crosslinking layer, the functional shell layer contains a photochromic component. Through the multi-layer structural design of the core layer, the transition layer and the functional shell layer, the shock resistance, the optical performance and the functional performance are synergistically improved; the core layer endows the material with good toughness and energy absorption capability, the transition layer effectively buffers performance difference between layers and keeps transparency, and the functional shell layer introduces a photochromic component while ensuring structural rigidity and durability, so that the material has a peep-proof function under the change of illumination conditions; the method is suitable for application scenes with high requirements on safety and functionality, such as PMMA products, automobile glass and the like.

The invention discloses a color high contrast processing algorithm for four-color electronic paper, and relates to the technical field of electronic paper display technology and image processing, and the method comprises the specific steps: firstly, carrying out feature extraction, converting an original RGB image to an HSV space, carrying out the statistics of the pixel proportion of a brightness interval, screening red and yellow pixels, and calculating the feature and the proportion of four colors; a dynamic clustering center is generated; performing weighted clustering mapping to generate an intermediate image; enhancing the saturation and boundary contrast of the adaptive image in a linkage manner; and finally, modular adaptive output: selecting scheme optimization data, converting the scheme optimization data into a 2-bit format, and outputting the two-bit format after verification. According to the method, through multi-dimensional feature extraction and dynamic clustering center generation, accurate color mapping is realized, and the color rendition degree and comfort degree are improved; and through multi-factor linkage enhancement and modular adaptive output design, the display effect and hardware adaptability are considered, the detail expressive force is enhanced, the integration process is simplified, reliable data transmission is guaranteed, and the application adaptation and display quality is improved.

The invention discloses a smart park articulated naturality web node data distributed storage system, and relates to the technical field of smart park data storage. Comprising a data acquisition layer, a distributed storage node cluster, a metadata management module, an intelligent scheduling module, a data security guarantee module, a data verification module, a data adjustment module and an application interface layer, and all the modules cooperate to realize efficient storage, quality control and management of articulated naturality web node data. Aiming at a smart park articulated naturality web data storage pain point, efficient storage and management and control are realized through multi-module cooperation, a distributed architecture, mixed storage and intelligent scheduling are adopted, the storage efficiency and the resource utilization rate are improved, multi-copy backup, cross-physical deployment and automatic fault repair are realized, data reliability is guaranteed, and the system is suitable for large-scale popularization and application. The method comprises the steps of full-process encryption, authority control and multi-dimensional verification, building of a data security defense line, data dynamic optimization and standardization of an interface, enhancement of data availability and system compatibility, and adaptation to the dynamic increase demand of park data.

The invention discloses a voice recognition method and related equipment, and relates to the technical field of vehicle control, and the method comprises the steps: obtaining audio data from an audio collection device, image data from a visual collection device, and vehicle state data from a vehicle bus; performing feature extraction on the audio data and the image data to obtain audio features and visual features; based on the vehicle state data, determining a fusion weight of the audio features and the visual features; based on the fusion weight, the audio features and the visual features are fused, and fusion feature representation is generated; and performing feature analysis on the fused feature representation to obtain a target text recognition result. According to the method and the device, the audio features, the visual features and the vehicle state data are fused, and the fusion weight of the multi-modal features is adaptively adjusted based on the vehicle running state, so that the dynamic optimization of the speech recognition process in the vehicle-mounted scene can be realized, and the accuracy, the stability and the practical application adaptability of speech recognition are improved.

The invention relates to the technical field of process control, and particularly discloses a stepping driver vibration suppression method based on process control, which comprises the following steps: S1, connecting a motor and a driver, setting the motor and the driver to be in a whole step mode, adjusting pulse, recording vibration data, and determining an ideal resonant frequency interval; s2, the subdivision multiple is adjusted to 32 times in a 2-time progressive increase mode, the step angle is synchronously updated, and a corresponding ideal frequency interval is obtained; s3, presetting a buffer frequency, and calculating upper and lower limit jump frequencies; s4, the speed increasing / decreasing test is cycled according to the preset power, and whether the subdivision multiple is upgraded or not is judged according to the vibration amplitude; s5, if the vibration of 32-time subdivision still exceeds the standard, the lower limit jump frequency is updated by doubling the buffer frequency; and S6, presetting the iteration limit times, and stopping when the iteration exceeds the limit. The method aims at pain points such as vibration and out-of-step caused by superposition of the pulse excitation frequency of the stepping motor and the natural resonance frequency of a rotor, and vibration of the stepping driver is restrained through a frequency detection and dynamic adjustment mechanism.

This invention discloses a polysaccharide-based freshness indicator microsphere, its preparation method, and its application, belonging to the field of intelligent food packaging and quality monitoring technology. The polysaccharide-based freshness indicator microsphere uses xanthan gum and sodium alginate as a composite substrate and is loaded with blueberry anthocyanins. The specific preparation method includes the following steps: First, xanthan gum solution and sodium alginate solution are prepared and mixed to obtain a composite polysaccharide solution; then, the composite polysaccharide solution is dripped into calcium chloride solution using a constant flow injection pump and allowed to solidify by static standing to form hydrogel microspheres; finally, the hydrogel microspheres are immersed in a blueberry anthocyanin solution for loading, and then freeze-dried under vacuum to obtain the polysaccharide-based freshness indicator microspheres. The polysaccharide-based freshness indicator microspheres of this invention exhibit good sphericity, structural stability, and sensitive response, and can produce a significant color response to volatile alkaline substances such as ammonia. They can be used for the visual monitoring of the freshness of black tiger shrimp, especially distinguishing the quality changes of black tiger shrimp from fresh to semi-fresh, and have good practical application value.

This invention discloses a multi-temperature linkage temperature-controlled aluminum nitride heater and its preparation method, belonging to the field of semiconductor ceramic technology. The heater includes an aluminum nitride ceramic substrate and a supporting base. A double-layer heating electrode is stacked on the ceramic substrate, wherein the second heating electrode layer adopts a zoned conductive circuit, dividing the temperature zones from the inside out into a center, inner ring, and outer ring. The inner and outer rings can be further subdivided into multiple independent sector-shaped zones and powered independently. A ceramic thermal resistor is built into the bottom of each temperature zone, insulated from the circuit, and works in conjunction with a PID controller to achieve zoned closed-loop temperature control. This invention solves the problems of poor temperature uniformity, localized overheating, and external temperature measurement lag in single-layer heating by using a double-layer heating synergy and a built-in temperature measurement structure, significantly improving temperature control accuracy and temperature uniformity. Simultaneously, a special aluminum nitride-based solder is used to connect the substrate and the base, resulting in good thermal expansion matching, high interface strength, excellent airtightness, and the ability to withstand high temperatures and thermal cycling shocks, adapting to the requirements of high-end semiconductor processes.

This invention discloses an octahedral tantalum carbide nano-ceramic powder and its preparation method, belonging to the field of ceramic powder material preparation technology. The invention involves reacting a tantalum source with n-butanol under a protective atmosphere to obtain a tantalum alkoxide. Citric acid, an alkali metal halide, and ethylene glycol are sequentially added to the tantalum alkoxide, and the mixture is stirred to obtain a three-dimensional cross-linked network precursor gel. After the precursor gel is powdered, it undergoes a pyrolysis-crystal growth reaction, followed by cleaning and impurity removal to obtain the octahedral tantalum carbide nano-ceramic powder. The preparation method of this invention achieves complete synthesis of TaC and octahedral morphology growth at low temperatures, while ensuring high purity and narrow particle size distribution of the product and reducing production energy consumption.

This invention discloses a microwave-tunable composite ceramic material and its preparation method, belonging to the technical field of microwave ceramic materials. The material is composed of Ba... 1‑x Sr x It consists of three phases: TiO3, Li2Mg3TiO6, and Mg2SiO4, among which Ba 1‑x Sr x The mass percentage of TiO3 is 30%–95%, and the value of x ranges from 0.3 to 0.7; the mass percentage of Li2Mg3TiO6 is 3%–60%, with the remainder being Mg2SiO4. This material has a moderate dielectric constant, low dielectric loss, and high tuning efficiency, combining high performance with a low sintering temperature. It can be used in microwave devices such as phase shifters, tunable filters, delay lines, oscillators, resonators, and phased array antennas.

The invention discloses a preparation method and application of disulfide bond-based infrared light / temperature intelligent double-response hydrogel, and belongs to the technical field of hydrogel. The invention aims to solve the problems that the existing hydrogel material generally has an irreversible cross-linked structure, mechanical properties and response performance are difficult to consider, a single stimulation response mode is adopted, and complex application requirements are difficult to meet. The method comprises the following steps: synthesizing a disulfide bond-containing cross-linking agent N, N '-diacryloyl-L-cystine (BISS), constructing a dynamic network structure through free radical polymerization and hydrogen bond synergistic cross-linking by taking the BISS, an N-isopropylacrylamide monomer and polyvinyl alcohol as main raw materials, and introducing magnetic ferroferric oxide particles into one layer to form a double-layer heterogeneous hydrogel system. Compared with single-response hydrogel, the hydrogel has the advantages that a multi-stimulation driving mode is realized, and compared with single-response hydrogel, the hydrogel can be driven by regulating and controlling the stimulation position, intensity and time sequence, and the direction, amplitude and speed of deformation can be precisely controlled in a programmable and repeatable manner.

This invention belongs to the technical fields of optoelectronic devices, spin optoelectronics, and organic-inorganic hybrid semiconductor materials. Specifically, it relates to a circularly polarized electroluminescent device based on a one-dimensional / three-dimensional perovskite heterostructure and its implementation method. The circularly polarized electroluminescent device includes a substrate, a bottom electrode layer, an electron transport layer, a light-emitting layer, a hole transport layer, and a top electrode stacked sequentially. The light-emitting layer is a one-dimensional / three-dimensional perovskite heterostructure formed in situ by chiral one-dimensional perovskite and three-dimensional perovskite. This invention constructs a one-dimensional / three-dimensional perovskite heterostructure within the light-emitting layer, utilizing the chiral properties of the one-dimensional perovskite to induce lattice distortion in adjacent three-dimensional perovskite at the heterostructure interface. This results in intrinsic structural chirality and excited-state chirality in the three-dimensional perovskite light-emitting region, achieving stable circularly polarized electroluminescence without the need for an external magnetic field or spin injection, thus enabling the device to simultaneously achieve high luminous efficiency and good stability.

The utility model discloses a leg structure and a biped robot, and relates to the technical field of robotics.The leg structure comprises a hip lateral extension assembly fixing base and two hip lateral extension assemblies fixedly installed on the hip lateral extension assembly fixing base respectively, and the two hip lateral extension assemblies are arranged in a front-back staggered mode along the output axis of the hip lateral extension assemblies; the mounting directions of the two hip lateral extension assemblies are opposite. According to the leg structure, by means of the arrangement mode of the hip lateral extension assemblies which are staggered front and back and are opposite in installation direction, the transverse size of the hip is reduced, the movement flexibility in a narrow space is improved, and meanwhile load balanced distribution and rich gait movement are achieved through a reasonable force transmission path; and the limitation of a traditional structure on the joint movement range is broken through to adapt to high-difficulty actions, so that the application adaptability of the biped robot in many fields is enhanced.