25results about How to "Small discrete" patented technology

The invention discloses a layered rock mass preparation method and device based on a digital image, and the method comprises the following specific steps: S1, carrying out the intelligent recognition and parameter extraction of the stratified rock mass bedding of a target layer rock sample, obtaining the bedding structure feature information of the sample, carrying out the high-precision digital three-dimensional reconstruction of the bedding structure, and obtaining the high-precision digital three-dimensional reconstruction of the stratified rock mass; a corresponding digital reconstruction model is obtained; and S2, according to the digital reconstruction model and bedding structure feature information of the sample, preparing the layered rock-like test piece based on a 3D printing technology. According to the invention, the preparation process of the layered rock mass test piece is simplified, the sample printing efficiency is improved, the sample difference is reduced, the consistency and surface flatness of the test piece are greatly improved, the discreteness among the samples is reduced, and the rock mass characteristics under the real geological condition are better simulated; meanwhile, the period of stratified rock mass research and engineering application is effectively shortened, and the reliability and practicability of a simulation experiment are improved.

The invention provides a liquid floated gyroscope signal conversion circuit, conversion device and conditioning conversion method, and the conversion circuit comprises a differential amplification circuit, a phase-sensitive demodulation circuit, a DC amplification filter circuit, an AC output circuit, an anti-reverse connection filter circuit and a secondary power supply circuit. The phase-sensitive demodulation circuit and the direct-current amplification filter circuit are used for performing phase demodulation and conditioning processing on the gyro output signal, outputting a direct-current output signal which is used for measurement of signal acquisition equipment and has small scale factor discreteness, independently performing voltage following processing on the gyro output signal, and outputting an alternating-current output signal; the alternating current signal and the direct current signal are output in parallel and do not influence each other, so that the output signal of the gyroscope body is truly restored, the signal output quality is improved, and the testing efficiency of measuring the angular rate of rotation of the carrier along the gyroscope sensitive axial direction by applying the liquid floated gyroscope is greatly improved.

The invention provides a functional lung partition adjustment method and device, equipment and a medium, and the method comprises the steps: obtaining a functional lung image of a target object and an initial functional partition result corresponding to the functional lung image; constructing a graph structure model based on an initial function partitioning result and functional lung imaging; wherein the graph structure model comprises nodes, edges and weights of the edges; each node is used for representing an initial functional area, the edge is used for connecting two adjacent nodes, and the weight of the edge is used for indicating the similarity between the two adjacent nodes; and based on the graph structure model, adjusting the initial function partitioning result to obtain a target function partitioning result. According to the embodiment of the invention, the method can achieve the adjustment of the plurality of initial function regions based on the graph structure model through the similarity between the initial function regions, obtains a plurality of target function regions with continuous regions and regular boundaries, and further obtains a target function region result with low discreteness and small application limitation.

The application discloses a transverse stepped gap groove clamp for a classical four-point bending experiment, which comprises an upper clamp, a lower clamp and a positioning connecting piece, standard installation through holes are arranged on the upper clamp, the lower clamp and an experimental sample, the positioning connecting piece passes through the standard installation through holes to realize the connection of the upper clamp, the experimental sample and the lower clamp, stepped gap groove arrays are arranged on working surfaces of the upper clamp and the lower clamp in contact with the experimental sample, the stepped gap groove array comprises a plurality of grooves arranged along the length direction of the upper clamp and the lower clamp, the depth of the groove is arranged along the height direction of the upper clamp and the lower clamp, the depth of the groove is increased or decreased along the length direction of the experimental sample according to a preset gradient, and the height of the groove is arranged along the thickness direction of the upper clamp and the lower clamp. The application can meet the requirement that the four-point bending experiment cannot realize high-throughput gap simulation in a stress corrosion environment, and is used for improving the accuracy, reliability and efficiency of the experiment.

This invention discloses a combined integrated molding inductor processing equipment, relating to the technical field of inductor processing. It includes a processing table equipped with a winding mechanism, a moving mechanism, and a detection component. A die-casting mechanism extends from the side of the processing table. The die-casting mechanism includes an upper mold, a lower mold, an injection component, a shielding component, and a linkage component. The upper mold and the lower mold are connected by a guide post. The injection component is located at the side of both the upper and lower molds and is movably connected to the upper mold via the linkage component. An umbrella-shaped canopy formed by a sealing assembly completely isolates the injection port from the external environment, ensuring stable flow of magnetic powder in a constant micro-environment. This avoids interference from external airflow on the powder spray trajectory, allowing the powder to fill the mold cavity formed by the upper and lower molds uniformly and densely.

The present invention provides a fatigue test fixture for typical angle connectors of bulkheads and a method of use, which is particularly suitable for L-shaped connectors with design requirements for special cross-sections. The fixture includes a fixed box body, a side plate, a lever and a loading mechanism, wherein the fixed box body and the lever are vertically connected; the fixed box body is fixedly connected with a horizontal part and a side plate of the angle connector from bottom to top, and the side plate is fixedly connected to the horizontal part of the angle connector; the lever is provided with a groove, and the vertical part of the angle connector is fixed in the groove; the loading mechanism includes an upper loading component and a lower loading component, wherein the upper loading component is rotationally connected to the fixed box body, and the lower loading component is rotationally connected to the lever. During the loading process, the loading component connected to the angle connector will move with the displacement of the chuck of the testing machine, thereby correctly simulating the actual stress state of the angle connector. Its structural design is reasonable and the clamping is convenient, ensuring that the fatigue test of the connector with special design requirements for the loaded part is carried out smoothly.

The invention relates to a missile large static instability control method based on a swing nozzle. The swing nozzle is adopted to control a pitching channel and a yaw channel, and an air rudder is adopted to control a rolling channel; the control method of the rolling channel comprises the steps that a rolling channel control instruction is obtained through a variable structure control method, and the rolling channel control instruction is output to the rudder system after being subjected to amplitude limiting; according to the thrust obtained through online identification, the missile flight process is divided into three stages including a thrust establishing stage, a thrust stabilizing stage and a thrust ending stage; in three stages of a missile flight process, a composite structure method is adopted, a pitching channel control instruction and a yaw channel control instruction are calculated, and the pitching channel control instruction and the yaw channel control instruction are output to a rudder system after being subjected to filtering and amplitude limiting; the control parameters of the thrust establishing section and the thrust stabilizing section are the same; and after entering the thrust ending section, correcting control parameters of the thrust establishing section and the thrust stabilizing section, and eliminating control errors caused by thrust uncertainty of the thrust ending section.

The present invention discloses a sample preparation device for a compacted sand pile composite soil for a dynamic triaxial test, comprising a drilling unit and a compaction unit. The drilling unit comprises a platform assembly, a slider assembly and a drilling tool, wherein the platform assembly comprises a platform plate, four supporting legs and two columns; the slider assembly comprises a slider and a rotating shaft; the drilling tool comprises a wrench drill chuck and a twist drill. The compaction unit comprises a sliding rod, a gravity slider, a positioner and a compaction head. The present invention also discloses a sample preparation method for a compacted sand pile composite soil for a dynamic triaxial test. The present invention solves the problems of inclined drilling, uneven sand piles and low sample preparation efficiency in the manual drilling of composite sand and soil samples in the dynamic triaxial test.

The invention discloses an intelligent calculation method for road subgrade pavement deflection data, and relates to the technical field of road engineering. Comprising the steps that a multi-model fusion intelligent calculation framework is constructed, reinforcement learning and deep learning algorithms are integrated, a desktop application program capable of being independently executed is packaged, intelligent processing of deflection detection data collection is achieved, and the intelligent processing comprises deflection value temperature correction calculation and deflection representative value calculation. According to the method, efficient calculation is carried out on the actually measured roadbed pavement deflection value, the calculation efficiency of the deflection value is remarkably improved by establishing a calculation model and optimizing a calculation process and an algorithm architecture, and the order of magnitude of the calculation efficiency is improved; according to the method, a traditional calculation mode is innovated, and a rapid and accurate solution is provided for roadbed and pavement detection.

The invention provides a high-thermal-conductivity pitch-based carbon fiber multifilament separation method and a monofilament detection method, and relates to the technical field of material testing. The separation method comprises the following steps: S1, preparing a separation solution from deionized water, absolute ethyl alcohol and a surfactant according to a volume ratio of 1: (0.05-0.1): (0.05-0.1); s2, shearing the pitch-based carbon fiber multifilament by a set length, carrying out layered separation, and soaking in a separation liquid to separate the end part of the monofilament; and S3, immersing the pressure-sensitive adhesive in the separation liquid, sticking the exposed monofilament end part of the pitch-based carbon fiber multifilament in the separation liquid, and extracting to obtain the high-thermal-conductivity pitch-based carbon fiber monofilament. The invention provides a special solution and a suspension extraction method for pitch-based carbon fiber multifilaments, and the phenomena of breakage and adhesion in the monofilament separation process are effectively reduced. The separation success rate is obviously improved, and the fiber damage is reduced, so that the discreteness of a carbon fiber monofilament test result is reduced.

The invention relates to the technical field of tire production, in particular to a method and system for regulating and controlling inherent frequency and an excitation source to improve tire cavity noise. According to the method, the weight and the perimeter of a tire blank are collected, the cavity noise peak frequency is predicted, and extrusion fitting and forming parameters are adjusted in a feedforward write-back mode so as to lock the inherent frequency; the vulcanization secondary shaping pressure is controlled to be 0.05-0.07 MPa, peak overshoot is limited not to exceed 0.02 MPa, and RFV8H excitation caused by uneven internal stress is inhibited; and meanwhile, no less than 12 clamping block transfer rings are adopted to weaken circumferential periodic disturbance. After vulcanization, target parameters are updated in a closed-loop mode through double indexes of RFV8H and peak frequency, and the noise risk and the customer complaint rate of the 200-250 Hz sensitive frequency band are remarkably reduced.

The invention discloses a WLED (White Light Emitting Diode) glue sealing method based on partitioned glue sealing. The sealing compound covers the LED chip and is filled in the LED bracket; carrying out subdivision on the sealing glue area, carrying out partitioning according to the exciting light energy density of the LED chip in the sealing glue area, dividing the area with relatively low energy density into a weak excitation area, dividing the area with relatively high energy density into a strong excitation area, and then carrying out sealing glue on the weak excitation area and the strong excitation area by using fluorescent powder glue step by step in sequence, respectively forming a weak excitation sealing compound and a strong excitation sealing compound; the fluorescent powder glue is prepared by mixing fluorescent powder glue and silica gel; the weak excitation sealing glue improves the consistency of spatial distribution under the combined action of centrifugal force and surface tension of fluorescent powder colloid; the strong excitation sealing compound improves the amplitude of the emitted spectrum and the luminous efficiency, and reduces the reabsorption of the fluorescent powder in the weak excitation sealing compound; the WLED device is applied to the WLED glue sealing method. The WLED applies purple light to excite fluorescent powder to emit green light and supplement light corresponding to the purple light and the green light, and two pairs of complementary light are synthesized into a white light spectrum; the color temperature of the WLED is improved by applying the cyan light, and the problems of low color temperature and high purple light radiation of the zero-blue-light WLED excited by the purple light are solved.

The invention relates to the technical field of damage detection of oil and gas transportation pipelines, in particular to a marine pipeline damage degree intelligent identification method based on multi-source feature deep fusion. The method comprises the following steps: S1, acquiring damage data of a damaged pipeline; s2, performing noise reduction on the damage data by adopting an improved wavelet threshold noise reduction method; s3, performing normalization processing on the data after noise reduction; s4, inputting the normalized data into a preset multi-feature deep fusion white box model for training; and S5, calculating the accuracy to reflect the accuracy of model identification. The method overcomes the defects of a hard threshold function and a soft threshold function, flexibly switches between the hard threshold function and the soft threshold function by adjusting the factor alpha, reduces discreteness, avoids the problem of constancy, is high in adaptability, can be automatically adjusted according to different signal characteristics, effectively removes the noise of experimental acquisition data, improves the signal quality, and greatly improves the identification accuracy of the damage degree.

The present application relates to a control system and control method for an aviation hybrid energy system, the system comprising: a turboshaft engine module for consuming fuel and outputting mechanical energy; a generator module connected to the engine module to obtain the mechanical energy output by the turboshaft engine module and convert it into electrical energy; a generator output control module connected to the generator module to detect the electrical energy output of the generator and rectify the output current of the generator module; a backup battery module connected to the engine output control module to recover and / or compensate for the electrical energy output by the generator module. A system output monitoring module connected to the generator output control module and the backup battery module to monitor the current total output power of the system. Through this technical solution, the flight performance of the aircraft can be improved and the probability of secondary failures can be reduced.

The application provides a multi-chamber wafer transfer control method and system based on an FCVD device, and an electronic device. The control method comprises: obtaining a film state characteristic value of a target wafer; the film state characteristic value characterizes a state of the target wafer after a precursor film layer thereof is self-deposited and continuously evolves over time; the target wafer is a wafer in a waiting transfer state after a front-end deposition is completed; based on the film state characteristic value, a film state change trend of the target wafer when entering multiple candidate chambers at a candidate transfer time is predicted; based on the film state change trend of the target wafer and an available state of each candidate chamber, a transfer priority of the target wafer is determined; a target chamber and a transfer time are determined in the multiple candidate chambers according to the transfer priority; and an actuator of the FCVD device is controlled to transfer the target wafer to the target chamber at the transfer time.

The present invention belongs to the field of geomechanical model test, and provides a fully automatic test device and method for similar materials in geomechanical model test, including an intelligent multi-stage batching and uniformity detection system capable of realizing multi-stage mixing batching, real-time monitoring of the mixing uniformity inside the batching bin to ensure uniform batching, an adaptive servo pressurization system capable of adaptively adjusting the specimen parameters according to the input sample parameters during the pressing process to meet the sample production requirements, an anti-adhesion multi-specification molding and pressure equalization detection system capable of adapting to the production of samples of various forms and specifications, and real-time detection of whether there are cavity defects inside the specimen during the pressing process, and a detachable automatic drying and water content discreteness verification system capable of flexibly selecting a drying device according to the sample preparation requirements and automatically calculating the water content mean of the batch of samples during the drying process. The present invention can ensure the uniformity of the same group of specimens, improve the efficiency and accuracy of the proportioning test, and can effectively and reasonably evaluate and detect the specimens.

The utility model discloses a hydraulic pressure test comparison device for an ocean instrument. The hydraulic pressure test comparison device comprises a compared hydraulic pressure test system and a hydraulic pressure test comparison device, the hydrostatic test comparison device comprises a pressure-resistant cabin shell, a sealing end cover I, a sealing end cover II, a sealing adapter assembly and a simulation blasting assembly; a sealing end cover I and a sealing end cover II are respectively mounted at two end interfaces of the pressure-resistant cabin shell to form a complete pressure-resistant cabin; a mounting through hole is formed in the center of the sealing end cover II; the sealing adapter assembly is mounted on the mounting through hole on the inner side of the sealing end cover II; the simulation blasting assembly is installed on the sealing switching assembly. A communication hole I is formed in the center of the sealing adapter assembly, so that the blasting simulation assembly is communicated with the outside of the pressure-resistant cabin. According to the utility model, the problem that no standardized equipment exists in the field of marine instrument environmental adaptability detection in China is fundamentally solved, and the problems that the comparison form is not suitable, the test instruments are not unified, the test instruments do not have trigger actions and the test instruments cannot be quantitatively traced are improved.

The invention discloses a bearing steel ball machining process, which relates to the technical field of steel ball machining, and comprises the following steps of: turning a groove on a resin grinding wheel of a horizontal ball lapping machine, and processing by using a soft ball groove pressing process; the basic grinding fluid and a hydrocarbon cleaning agent are mixed to serve as grinding fluid, and the grinding fluid is circularly introduced into a ball grinding machine; during ball feeding, the pressure of a machine table is controlled to be 1.4-1.6 MPa, the rotating speed of a main shaft is 9-11 r / min, and operation is conducted for 10 min to preliminarily correct a ball body; increasing the speed and the pressure to a preset value, and entering a rapid cutting stage; reducing the pressure to 2.4-2.6 MPa and the speed of a main shaft to 19-21 r / min when the required size is approached, and performing precision correction; and when the required size is reached, shutting down and discharging the ball. According to the bearing steel ball machining technology, the geometrical parameter values of the machined steel balls are small in discreteness and high in precision, the dynamic performance of the steel balls is effectively improved, the fitting abnormal noise of final products is reduced, and the service life of the final products is prolonged; meanwhile, the cost is reduced, and the environmental pollution is reduced.

The present application relates to the field of building construction, and in particular to intelligent large-volume concrete raft construction technology, methods, systems and media, including determining the concrete mix ratio during large-volume construction through orthogonal design and trial mix tests, and verifying the reliability of the concrete mix ratio through full-scale model tests and numerical simulation analysis; completing the one-time mix of concrete through the total amount of concrete and the concrete mix ratio; calculating the steel bar cutting plan through steel bar cutting information and steel bar raw material information, cutting and installing the steel bars according to the steel bar cutting plan; dividing the area to be poured with concrete into multiple pouring layers along the pouring height, and retaining a push zone in each pouring layer, and pouring the push zone of the previous pouring layer when pouring the next pouring layer; and finishing and polishing the entire concrete through a concrete leveling robot. The present application has the effect of reducing the discreteness of concrete strength and ensuring the quality of base plate construction.

The light source device of one embodiment of the present disclosure includes a first light source portion that emits first light; a second light source portion that emits second light and is arranged side by side with the first light source portion; a first mirror that is arranged opposite the emission surface of the first light source portion and has a plurality of first reflecting portions that reflect the first light in one direction and are arranged discretely in a plane; and a second mirror that is arranged opposite the emission surface of the second light source portion and side by side with the first mirror, reflects the second light in one direction, and has a plurality of second reflecting portions arranged at substantially the same positions as each of the plurality of first reflecting portions in one direction.

This invention provides a leveling device and method for Vickers hardness testing of high-hardness ceramic materials. The device aims to solve the problems of irregular indentations, inaccurate data, and indenter damage caused by insufficient machining precision leading to non-parallelism of the upper and lower surfaces in Vickers hardness testing. The device includes a base plate for fixing to the original sample stage of the hardness tester, a floating plate connected above the base plate via a ball joint assembly, and three leveling knobs arranged in a triangle, screwed into the floating plate with their lower ends resting against positioning holes in the base plate. By adjusting the leveling knobs, the floating plate can be driven to make omnidirectional micro-motion around the center of the ball joint, thereby directly adjusting the pitch and deflection angles of the sample to be tested, which is fixed to the upper surface of the floating plate. This invention has a compact and low-profile structure, does not interfere with the original function of the hardness tester, and ensures strict parallelism between the test surface and the indenter by "directly leveling the upper surface of the sample," significantly improving testing accuracy and reliability.

This utility model relates to the field of material mechanical property testing technology. It provides a device for preparing vertical tensile specimens, comprising: a testing fixture including a bonding frustum and a positioning block, with a bonding surface on the bonding frustum and a through hole on the positioning block; a glue-applying fixture including a glue-applying ring with a positioning ring inside, the glue-applying ring and the positioning ring forming a mounting groove; when the bonding frustum is placed in the mounting groove, the height of the glue-applying ring is higher than the height of the bonding surface, the difference between the height of the glue-applying ring and the height of the bonding surface being the thickness of the glue layer; a bonding fixture with a mounting groove, and a positioning pin inside the mounting groove, the positioning pin engaging with the through hole; and a fixing fixture, a fixing plate horizontally positioned above the positioning block. The vertical tensile specimen preparation device of this utility model produces specimens of stable quality and highly reliable test results.

The utility model belongs to the technical field of electric tool battery protection, and particularly relates to a fuse capable of controlling a fusing point, which comprises a shell, the interior of the shell is hollow, a fuse wire penetrates through the interior of the shell, one end of the shell is sleeved with a first outer cap, the other end of the shell is sleeved with a second outer cap, one end of the fuse wire is electrically connected with the first outer cap, and the other end of the fuse wire is electrically connected with the second outer cap. The other end of the fuse wire is electrically connected with the second outer cap, a fixing body is arranged at the end of the fuse wire, the end, away from the fuse wire, of the fixing body covers the surface of the first outer cap and / or the second outer cap, and the surface of the fuse wire is provided with at least one through hole or groove. According to the utility model, through the arrangement of the through holes or the grooves, the passing voltage can be divided into a plurality of sections, thereby achieving the purpose of voltage division, enabling the temperature of a fusing point to be concentrated in a certain area, and improving the short circuit and breaking protection capability of a product.

The present application relates to the field of prefabricated concrete pile production, and specifically discloses a preparation method of a centrifugal reinforced prestressed solid square pile, comprising: mold pretreatment and cage reinforcement assembly, primary high-strength concrete distribution, mold closing and prestress tensioning, five-stage gradient centrifugal forming, residual slurry and impurity discharge, pile core high-strength concrete grouting and densification, and high-pressure steam curing. The present application uses gradient centrifugation to compact the outer layer of the pile body concrete layer by layer and uniformly arrange the aggregate, eliminates the soft interlayer of the pile core by discharging the residual slurry, and then fills the internal voids by secondary grouting of the pile core and low-speed centrifugal compaction, forming a full-face homogeneous structure with dense outer layer and high-strength core. Finally, the high-pressure steam curing strengthens the overall performance. The present application effectively solves the technical defects of uneven cross-section density and high core porosity caused by the traditional vibration process, significantly improves the compressive strength, bending performance and structural stability of the pile body, and is suitable for industrialized mass production.

The invention discloses an ink spraying process for a 3D glass cover plate, which comprises the following steps: pretreating the 3D glass cover plate, and performing low-frequency pulse activation and high-frequency continuous activation to adjust the surface energy; the method comprises the following steps: preparing spraying ink, obtaining the curvature distribution of the 3D glass cover plate, dividing a spraying surface into different curvature areas to set differential wet film thicknesses, carrying out partitioned spraying by adopting an atomizing spray gun, and sequentially carrying out near-infrared radiation, ultraviolet curing and low-temperature tempering after spraying to obtain a finished product of the 3D glass cover plate. According to the method, the 3D glass cover plate is subjected to cleaning, drying and degassing pretreatment, staged corona activation and contact angle feedback adjustment are matched, a reinforcing filler and a toughening aid are introduced into spraying ink, a curvature partitioned differential spraying process is implemented, near-infrared pre-stabilization and ultraviolet segmented curing tempering are performed, and the 3D glass cover plate is subjected to heat treatment, so that the 3D glass cover plate is obtained. The problems of bubble pinholes, retraction shrinkage cavities and color difference base exposure can be effectively reduced, so that the adhesion reliability, the appearance consistency and the product yield of products are improved.