15results about How to "Promote technological development" patented technology

The invention discloses a partition display system and method based on a polarization body holographic grating, and belongs to the technical field of display, and the system comprises a light source layer, a collimation optical layer, an electric control light diffusion layer, a polarization body holographic grating array layer and a liquid crystal display layer which are sequentially arranged from bottom to top; the light source layer can independently generate left-hand circularly polarized light and right-hand circularly polarized light; the collimating optical layer can convert light emitted by the light source layer into collimated light beams; the electric control light scattering layer has a transparent mode and a scattering mode which can be switched; the polarization body holographic grating array layer is formed by alternately arranging left-hand circular polarization gratings and right-hand circular polarization gratings; when the electric control light scattering layer is in a transparent mode, the liquid crystal display layer only performs rendering display on an area through which refracted light of the polarization body holographic grating array layer passes; and when the electric control light scattering layer is in a scattering mode, the liquid crystal display layer renders and displays all areas through which light passes. The invention has the advantages of high luminous efficiency utilization rate, low visual area crosstalk, ultra-thinness and the like.

The invention provides a double-antenna sea surface height monitoring method based on GNSS-IR, and belongs to the technical field of GNSS-IR sea surface height monitoring. The method comprises the following steps: establishing a double-antenna GNSS-IR monitoring device; respectively extracting direct and interference signal observation values; performing direct and reflected signal separation on the signal-to-noise ratio data under the low elevation angle and the high elevation angle respectively; reflecting surface height characteristic values in the low-elevation-angle reflection component and the high-elevation-angle reflection component are calculated respectively; and error elimination is carried out on the height of the inverted reflecting surface, and the inversion precision is calculated by comparing with tide station data. According to the method, the limitation of a traditional GNSS-IR sea surface height monitoring method on the elevation angle is made up, the mode that only low elevation angle data can be used in an original method is expanded to the mode that high and low elevation angle data can be used for inversion, and the sampling rate of sea surface height inversion is greatly increased in the mode that observation data are segmented according to the elevation angle; the method has the characteristics of high observation time resolution, low cost and the like.

The invention provides a one-way transmission mode switching method and system of gigabit Ethernet, a medium and equipment, and the method comprises the following steps: monitoring a signal-to-noise ratio of eye pattern quality of a transmission signal between master equipment and slave equipment, and triggering a one-way transmission mode based on the signal-to-noise ratio; controlling the master device to stop transmitting the training signal, and changing the setting of a preset register to enable the master device and the slave device to enter a one-way transmission mode establishment stage; when entering a one-way transmission mode establishment stage, controlling the master device to send a training signal of a preset duration, and completing establishment of a one-way transmission mode when the slave device successfully receives a modulation signal; and responding to a preset exit mechanism to exit the currently established one-way transmission mode, wherein the exit mechanism comprises a first mechanism, a second mechanism and a third mechanism. According to the one-way transmission mode switching method and system of the gigabit Ethernet, the medium and the equipment, the reliability of data transmission is remarkably improved, meanwhile, the network adaptability is enhanced, the maintenance cost is reduced, and the user experience is improved.

The present invention relates to a test device and method for the influence of disturbance on early-age concrete, comprising a rock-soil medium simulation block, a sample placement cavity is arranged inside the rock-soil medium simulation block, a vibration transmission layer is wrapped around the outer circumference of the rock-soil medium simulation block, and a vibration consumption layer is wrapped around the outer circumference of the vibration transmission layer; the present invention also comprises at least one vibration generating mechanism, the vibration generating mechanism comprises an air pipe, one end of the air pipe is connected to an air source, and the other end serves as an end in contact with the vibration transmission layer and is provided with a vibration membrane. The test device of the present invention has low manufacturing cost, more realistic simulation and can simulate the influence of multiple vibration sources.

The present invention discloses a double-arm-raised CT image quality control detection method combined with multi-view fusion, which performs technical quality control by performing CT scanning on the double-arm-raised posture from multiple views, fuses the multi-view images by using advanced image processing technology and algorithms, obtains more comprehensive quantitative evaluation of image information, and uses simple ellipse fitting to calculate the relationship between the normal vector of the ellipsoid and the humeral posture to determine the positional relationship according to the different body postures of patients, calculates the angle by the normal vector of the chest body ellipsoid plane and the direction vector of the humerus of both arms, and quantifies the angle into a quality control score to quantitatively evaluate the quality control effect, thereby further improving the accuracy and reliability of CT examinations.

The invention discloses a three-water-level spiral pipe winding cooling system for producing nano metal powder. The three-water-level spiral pipe winding cooling system comprises a water pump A, a water pump B, a cooling control system, a temperature sensor tCa, a temperature sensor tBa, a temperature sensor tAa, a temperature sensor tEa, a temperature sensor tFa and a connecting pipe. The cooling device is characterized by further comprising a water tank overlapping and clamping heat exchanger, a liquid cavity wall bottomless barrel heat dissipation tower, a low-position spiral cooling pipe, a middle-position spiral cooling pipe and a high-position spiral cooling pipe. The device has the beneficial effects that the spiral cooling pipe, the liquid cavity wall bottomless barrel heat dissipation tower and the water tank stacked heat exchanger are simple and convenient in structure, easy to manufacture and low in cost; breakage and leakage are not prone to occurring, and the failure rate is low; the service life is long, the performance is stable, energy is saved, and heat dissipation efficiency is high; therefore, the production cost for manufacturing the nano metal powder can be reduced, the quality and production efficiency of the nano metal powder can be improved, popularization and application of the nano metal powder can be promoted, the requirements of all walks of life for the nano metal powder are met, and technical development of all walks of life is promoted.

This invention discloses a component-level vibration testing method for a piezoelectric ceramic modulation type all-fiber current transformer, comprising: disassembling the modulation module from the all-fiber current transformer while maintaining the complete optical and electrical paths of the all-fiber current transformer; fixing the modulation module as a whole on a vibration table, applying vertical, horizontal, and axial vibrations sequentially to the modulation module without applying primary current to the all-fiber current transformer; and continuously monitoring the secondary output of the all-fiber current transformer using a fault recorder and recording any abnormal output currents. This invention effectively assesses the vibration resistance performance of the modulation module as a whole and its internal components, thereby providing targeted vibration suppression solutions.

The invention discloses a multi-modal entity relationship extraction method applied to audio data. The method comprises the following steps: constructing an audio entity relationship data set; performing large model training through the audio entity relational data set to obtain an optimized large model, including: performing Whisper model conversion processing on the audio entity relational data set to obtain corresponding text data, optimizing the text data in combination with a connection module to obtain optimized text data, and obtaining the optimized large model based on the optimized text data. Performing entity relationship extraction and text prediction by using a GPT-3 model, and respectively generating probability distribution of an entity relationship triple and text prediction; and inputting to-be-processed audio data into the optimized large model to obtain a corresponding entity relationship extraction result. According to the method, efficient and accurate entity relationship extraction of the audio data is realized, the capability of obtaining valuable information from unstructured data is improved, and powerful support is provided for intelligent upgrading in the fields of intelligent interaction and the like.

This invention discloses a full DC aggregation system for offshore wind power with medium- and high-frequency AC transmission, relating to the field of DC power transmission technology. It includes: an offshore wind turbine module for acquiring medium-voltage DC power; a multi-port DC transformer module for converting the medium-voltage DC power into high-voltage DC power; a DC submarine cable module for aggregating the high-voltage DC power and transmitting it to an onshore converter station module; an onshore converter station module for acquiring onshore high-voltage AC power based on the aggregated offshore high-voltage DC power; and an onshore AC module for receiving the onshore high-voltage AC power, thus achieving full DC aggregation of offshore wind power. This invention, through improvements to the topology and control methods of the medium-voltage-to-high-voltage DC transformer, achieves efficient and economical power transmission, improves the economic viability and engineering application value of offshore wind power aggregation systems, and meets the market demand for affordable and low-cost power generation.

The invention relates to the technical field of solar cell materials, and discloses a performance optimization design method of an all-inorganic two-dimensional perovskite photoelectric material, which comprises the following steps: S1, researching the influence of different element components on the stability and photoelectric properties of all-inorganic two-dimensional perovskite, and carrying out optimization screening on the all-inorganic two-dimensional perovskite; s1.1, optimizing crystal lattices of different element component materials by utilizing a de novo molecular dynamics method, simulating oscillation conditions of energy of supercells along with time at different temperatures, and judging the stability at room temperature; s1.2, calculating dissociation energy delta E of the materials screened in the step S1.1, and analyzing the stability of the materials; s1.3, calculating lattice vibration of the material screened in the step S1.2 by using a density functional perturbation theory (DFPT), and analyzing the stability of the material from a phonon spectrum; and S1.4, judging the photoelectric property of the material screened in the step S1.3 by using a density functional theory. According to the technical scheme, the stability and the photoelectric property of the all-inorganic two-dimensional perovskite photoelectric material can be optimized.

The utility model relates to cutting device field especially relates to electric wire cable insulation longitudinal cutting device, including operating platform, U type frame, limit ring and rectangle slide rail, the operating platform upper end middle part fixed mounting has U type frame, U type frame one side transverse interval is equipped with three groups for adjusting and fixed limit ring according to cable diameter, U type frame is away from limit ring side and limit ring corresponds and is equipped with the rectangle slide rail for pulling cable, the utility model discloses through first cable passes through limit ring, through the clamping of grabbing on the rectangle slide rail and holds in the palm, then through the arc expansion sleeve and arc expansion board in the limit ring, according to the cable diameter situation adjusts and limits, then through the clamping drive cable and pulls, cooperation U type frame below cutting knife carries out longitudinal cutting work, through adjustable limit structure, can according to the different size of electric wire cable, accurate adjustment fixed position and strength, make it in the cutting process, ensure that cable is always in stable state.

The invention discloses a method and system for establishing a complementary metal oxide semiconductor tube model at extremely low temperature, and the method comprises the steps: obtaining an electrical characteristic curve of a CMOS tube at least at two extremely low temperature points, or carrying out the curve fitting of a known CMOS tube of a model; on the basis of the obtained CMOS tube electrical characteristic curves of the at least two low-temperature points, predicting the CMOS tube electrical characteristic curve under the target temperature Ttarget; modeling software is adopted to carry out curve fitting parameter extraction on the CMOS tube under the Ttarget, important parameters are corrected, and an electrical characteristic curve of the CMOS tube under the Ttarget is reconstructed based on the extracted parameters and the corrected parameters; complete modeling of low-temperature electrical behaviors of the CMOS tube is further completed after parameter extraction and modeling of the CMOS tube under the Ttarget are completed through modeling software, and accurate matching of a device characteristic curve and a real physical state under the extremely low temperature is achieved.

The invention provides a photovoltaic array multi-dimensional data merging collection and state evaluation edge intelligent terminal. The photovoltaic array multi-dimensional data merging collection and state evaluation edge intelligent terminal comprises a voltage / current collection unit, a solar irradiation unit, a wind speed collection unit, an environment temperature collection unit, a data merging unit, a state evaluation unit and a data transmission unit. The voltage / current acquisition unit is connected with a direct current confluence part of the photovoltaic array and is used for acquiring voltage and current of the direct current confluence part of the photovoltaic array; the voltage / current acquisition unit, the solar irradiation unit, the wind speed acquisition unit and the environment temperature acquisition unit are connected with the data merging unit, and are used for merging photovoltaic array high-dimensional data streams formed by acquired voltage and current information, current solar irradiation intensity information, current wind speed intensity information and environment temperature information; and two paths of parallel transmission are realized.

The invention relates to the technical field of milling, and discloses a milling tool and a design method thereof. The milling tool comprises a tool bit and a tool bar which are in threaded connection; a plurality of cutting edges are evenly distributed on the tool bit in the circumferential direction. One axial end of the tool bit is provided with a tool bit interface; a plurality of positioning islands are uniformly distributed on the tool bit interface, a plurality of positioning surfaces formed on the tool bit interface comprise three positioning surfaces to which each positioning island belongs, and the three positioning surfaces are planes and consist of two side surfaces and a middle surface; the side center lines of all the positioning islands extend through the axial center of the tool bit; the side faces of all the positioning islands do not interfere with each other in a radial space during machining; one axial end of the cutter bar is provided with a cutter bar interface; a plurality of positioning grooves matched with the positioning island structures are uniformly distributed in the cutter bar interface; according to the scheme, the limitation brought by an existing positioning island structure is broken through, a milling tool is manufactured by replacing a precision pressing technology with machining, the positioning precision can be continuously kept, the form and position precision is obviously improved, and the continuous machining quality is ensured while the tool performance is improved.

The invention provides a high-temperature-resistant zirconium-titanium-carbon ceramic precursor and a preparation method thereof, and belongs to the technical field of ceramic materials.The method comprises the steps that a zirconium carbide ceramic precursor is prepared; preparing a sodium cyclopentadiene solution; preparing titanocene dichloride; preparing a titanium intermediate 1 and a titanium intermediate 2; uniformly mixing the titanium intermediate 1, the titanium intermediate 2 and an organic solvent, and reacting at 58-62 DEG C for 1.6-4.3 hours to obtain a titanium carbide ceramic precursor; uniformly mixing the zirconium carbide ceramic precursor, the titanium carbide ceramic precursor and an organic solvent, and reacting to obtain the high-temperature-resistant composite zirconium-titanium-carbon ceramic precursor. According to the invention, the uniformity of the high-temperature-resistant composite zirconium-titanium-carbon ceramic precursor and the stability of high-temperature mechanical properties can be improved.