23results about How to "Improve application adaptability" patented technology

The invention discloses an external bias pixel structure of a light receiving stage circuit in a dynamic vision sensor pixel. The external bias pixel structure comprises a photodiode, a logarithmic tube, an amplifier tube, a switch tube and a bias tube, the bias tube, the switch tube and the amplifier tube are sequentially connected in series, a source electrode of the bias tube is connected with a power supply, a drain electrode of the bias tube is connected with a drain electrode of the switch tube, a source electrode of the switch tube is connected with a drain electrode of the amplifier tube, and a source electrode of the amplifier tube is grounded; the grid electrode of the bias tube is in signal connection with Vbias, the grid electrode of the switch tube is in signal connection with Vcpr, the source electrode of the switch tube and the drain electrode of the amplifier tube are connected with the grid electrode of the logarithmic tube, the drain electrode of the logarithmic tube is connected with a power supply, the source electrode of the logarithmic tube is connected with the negative electrode of the photodiode, and the positive electrode of the photodiode is grounded. And a grid electrode of the amplifier tube is also connected between the source electrode of the logarithmic tube and the negative electrode of the photodiode.

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 present invention discloses a permanent magnet coupler with variable magnet position and speed, and relates to the technical field of permanent magnet eddy current transmission. The present invention includes a permanent magnet rotor assembly installed at the load end of the permanent magnet coupler; the permanent magnet rotor assembly is located between a first conductor disk and a second conductor disk; the permanent magnet rotor assembly includes a first rotor disk and a second rotor disk that are relatively coaxially matched; a coaxial gear ring and a plurality of gear assemblies meshing with the gear ring are installed in the first rotor disk and the second rotor disk. The present invention changes the radial position of the magnet, which is equivalent to changing the effective radius of the magnetic field, thereby changing the transmission torque and output speed. The adjustment is convenient and quick, and the application adaptability is strong, which is conducive to the promotion and application of variable speed permanent magnet couplers.

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 utility model provides a kind of combined disc spring device's assembly structure, belong to disc spring assembly technical field, the assembly structure of this combined disc spring device, including disc spring body, compression sleeve ring and positioning pin, disc spring body is conical platform and is provided with central through-hole in center, the outer circumferential edge of disc spring body forms annular pressure surface downward, compression sleeve ring is circular ring structure and is sleeved in the outside of disc spring body, annular gap is formed between the inner circumferential surface of compression sleeve ring and the outer circumferential surface of disc spring body, positioning pin is arranged on the side wall of disc spring body, one end of positioning pin is fixed on disc spring body, the other end of positioning pin extends to the inside of compression sleeve ring and is abutted with the inner circumferential surface of compression sleeve ring, the upper end surface of compression sleeve ring is provided with annular boss, annular boss is evenly distributed with limit groove along the circumferential direction of compression sleeve ring, the extension end of positioning pin is inserted into limit groove, pre-compression space is formed between the lower end surface of disc spring body and the inner circumferential bottom surface of compression sleeve ring.

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 relates to the field of drug delivery technology, and more particularly to a ZIF-8-based composite hydrogel, its preparation method, and its applications. By adjusting the mass ratio of gelatin, this invention constructs a novel pH-responsive hydrogel drug delivery system—the ZIF-8-based composite hydrogel. By introducing ZIF-8 material into the gelatin hydrogel system, this invention improves the adaptability of the ZIF-8-based composite hydrogel for local drug delivery, demonstrating strong local compatibility. Through a series of characterizations, this invention proves that the ZIF-8-based composite hydrogel possesses good extensibility and adhesion properties. Furthermore, blood compatibility indicates that the ZIF-8-based composite hydrogel exhibits excellent biocompatibility. The construction of this drug delivery system provides new insights for the development of pH-responsive hydrogels.

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.

The present invention discloses a light transmission device and a method for using the same, which relates to the field of sterilization technology, and includes an ultraviolet emission component, a light guide column and a diverging component. The ultraviolet emission component is arranged at the entrance of a target sterilization area, and the light emitted by the ultraviolet emission component enters the light guide column and forms an incident angle with the normal of the surface of the light guide column, wherein the incident angle is a1, and sin(a1)>n2 / n1; the light guide column and the diverging component are connected at intervals, the light guide column is placed on a straight section of the target sterilization area, the diverging component is placed at a bend in the target sterilization area, and the diverging component is used to diverge the light emitted by the ultraviolet light source to all around. This device avoids the problem that ultraviolet light is prone to form a sterilization dead zone when the shape of the target sterilization area is irregular, and can transmit the sterilizing ultraviolet light to an area that cannot be irradiated by direct light through the diverging component without changing the position of the light source, thereby improving the application adaptability of ultraviolet sterilization without increasing the light source.

The invention discloses an LCLC resonant converter based on inductive coupling design, which comprises an inversion unit, an LCLC resonant cavity unit, a transformer and a rectification unit which are arranged in sequence, and is characterized in that the inversion unit is composed of an input power supply and a full-bridge switching circuit, and output nodes on the inversion unit are a node A and a node B respectively; the LCLC resonant cavity unit comprises a resonant inductor, an excitation inductor, a resonant capacitor and an excitation capacitor; the transformer is connected to the output end of the LCLC resonant cavity unit; the rectification unit is composed of four power switch tubes. One end of a primary side winding of the transformer is connected with a node A through a resonant inductor; the other end of the primary winding of the transformer is connected with a node B through a resonant capacitor; the excitation inductor and the excitation capacitor are connected in series and then are connected in parallel with a primary side winding of the transformer; the resonant inductor and the excitation inductor are magnetically coupled through a common magnetic core, different-name ends are connected to the same point to generate mutual inductance M, and the mutual inductance M is used for compensating the deviation of leakage inductance Lk generated by the transformer to resonant frequency.

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.

The invention relates to a nano-scale bismuth-based glass fiber composite photocatalytic material and a preparation method thereof, the preparation method comprises the following steps: pretreatment: adding a modifier into chopped glass fibers, and enabling the chopped glass fibers to react with the modifier to obtain modified glass fibers; the modifier is a silane coupling agent KH-550, an amino silane coupling agent, an epoxy silane coupling agent or a methacrylate coupling agent; the synthesis method comprises the following steps: dissolving Bi (NO3) 3.5 H2O, Na2WO4 and 5H2O in deionized water to obtain a mixed solution, infiltrating the modified glass fiber by using the mixed solution, transferring the glass fiber into a reaction kettle, carrying out a thermal chemical reaction, and centrifuging and washing the obtained white precipitate after the reaction is completed to obtain the glass fiber composite photocatalytic material. The preparation method has the advantages of optimizing the dispersibility of the material and the exposure degree of active sites, improving the catalytic efficiency and stability and enhancing the application adaptability in a complex medium.

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.

A writing line drying time measuring device and method thereof, used for quantitatively measuring the writing line drying time of a writing tool on a writing paper, comprising: a sliding mechanism (1), used for maintaining the writing tool in a fixed state or performing smooth movement; an angle adjustment mechanism (2); a sleeve mechanism (3), used for clamping the writing tool of different models and specifications; a platform mechanism (4), used for placing the writing paper, controlling the writing paper to automatically roll up, controlling the paper feeding speed and ensuring the flatness of the paper; a weight mechanism (5), used for setting the covering paper and the load weight, controlling the covering paper to automatically roll up, controlling the paper feeding speed and ensuring the flatness of the paper; and a video detection system (6), used for shooting the writing paper after writing is completed or the covering paper after covering is completed, and inputting the video data into a computer installed with video detection software.