409results about How to "Lower requirement" patented technology

The utility model discloses a humidity-adjustable planting device which comprises a planting box body, the planting box body is of a shell structure, the planting box body comprises planting box side walls and a planting box bottom, a mixing cavity isolation wall is fixedly arranged at the planting box bottom, the height of the mixing cavity isolation wall is lower than that of the planting box side walls, and the height of the mixing cavity isolation wall is larger than that of the planting box side walls. The inner side of the planting box side wall, the bottom of the planting box and the outer side of the mixing cavity isolation wall jointly define a soil-liquid mixing cavity, and the soil-liquid mixing cavity is of a structure with the upper portion open. A liquid storage device is arranged on the outer side of the side wall of the planting box and connected with the side wall of the planting box through a height adjusting device, and the height adjusting device is used for adjusting the height of the liquid storage device relative to the bottom of the planting box. The bottom of the liquid storage device is connected with a first liquid conveying pipeline, the first liquid conveying pipeline communicates with the interior of the liquid storage device and the soil-liquid mixing cavity, and the liquid storage device and the soil-liquid mixing cavity form a communicating container through the first liquid conveying pipeline.

The invention discloses an unmanned aerial vehicle signal detection and identification method based on spectrum feature enhancement. The method comprises the following steps: firstly, carrying out time-frequency transformation on a received signal to obtain an original time-frequency graph; performing learning enhancement on the degenerated time-frequency graph by adopting a coding-decoding type deep neural network, and realizing noise suppression and structure recovery by combining pixel reconstruction, structural similarity and a texture perception loss function; and finally, performing target area detection and positioning on the enhanced time-frequency graph, directly outputting a structured result containing a time-frequency range, a category and confidence, and completing conversion from a frequency spectrum to a linkable engineering target. According to the unmanned aerial vehicle signal detection and recognition method based on spectrum feature enhancement, a spectrum feature enhancement mechanism is introduced before traditional spectrum analysis and feature recognition processing, and region-level detection and judgment are executed under the enhanced spectrum constraint condition; reliable discovery, positioning and identification of an unmanned aerial vehicle control link and an image transmission link in a complex electromagnetic environment are realized.

The application provides an ADAS controller test method, device, terminal and storage medium. The method comprises the following steps: based on setting environment information and setting target information, generating simulation target information required by a target test scene of a to-be-tested ADAS controller installed on a real vehicle; sending the simulation target information to each vehicle body CAN interface of the real vehicle, and receiving control information of the to-be-tested ADAS controller updated based on the simulation target information and / or first vehicle state information of the real vehicle; and generating a test report of the to-be-tested ADAS controller about the target test scene according to the control information and / or the first vehicle state information. The application can avoid collision caused by extreme working conditions, reduce collision risk, reduce test cost and improve test efficiency when testing the real vehicle function of the ADAS controller.

This invention relates to a rapid identification method Lactobacillus plantarum The method for identifying strains, belonging to the field of species and strain identification, is based on the differences in three DNA barcode sequences. Lactobacillus plantarum CGMCC NO: 26171 strain from Lactobacillusplantarum This method allows for rapid identification from other strains of the same species. Compared to traditional morphological identification methods, the standard gene sequence obtained is beneficial for the molecular identification of *Lactobacillus plantarum* strains, effectively shortening the identification time. Three pairs of DNA barcoding primers enable specific amplification of the test strain, allowing for rapid identification. Lactobacillus plantarum strains.

The application provides a low-temperature sintering silicon nitride ceramic powder, a silicon nitride ceramic and a preparation method thereof, and uses beta silicon nitride powder as raw material and low-melting-point glass powder as a sintering aid. The beta silicon nitride powder with a content of 75-90wt% and a particle size range of 0.5-1um is selected, and the low-melting-point glass powder with a content of 10-25wt% is added. The mixed powder is ball milled, dried and pressed into a sheet, and then cold isostatic pressing is carried out, and pressureless sintering is carried out at 1400-1600 DEG C under a nitrogen atmosphere to obtain a silicon nitride ceramic material. The beta silicon nitride powder provided by the application can directly sinter the beta silicon nitride ceramic at low temperature. The preparation method of the silicon nitride ceramic provided by the application reduces the sintering temperature of the silicon nitride, improves the preparation efficiency of the silicon nitride ceramic, and is mainly applied to refractory fire-resistant materials.

This utility model relates to the field of medical equipment technology, and in particular to an animal vaccine injection booster device, comprising a first air chamber, a second air chamber, a piston assembly, and a gun body; the gun body has a first air chamber and a second air chamber, the first air chamber having a gas source inlet, a gas outlet, and a gas delivery outlet, the gas delivery outlet communicating with the second air chamber, and a control valve also being provided in the first air chamber; when the trigger of the gun body presses the control valve, the control valve blocks the connection between the gas delivery outlet and the gas outlet; when the trigger of the gun body is released, the control valve blocks the connection between the gas delivery outlet and the gas source inlet; the second air chamber has a piston assembly, the piston assembly including a piston and a firing pin, the firing pin being disposed on the piston, and an elastic element being provided between the piston and the firing pin output end of the second air chamber; the trigger is disposed on the grip part of the gun body, the grip part having a grip groove on the side near the trigger, and a thumb groove on the top side of the grip part away from the trigger. This utility model is easy to operate and has a good grip feel.

The application provides a JPA-based web code automatic generation system, comprising a JPA client, a code generation server, a Java backend service module and a Vue frontend service module; the system combines JPA technology with template technology, and can generate database tables and the front end and the back end of a web application system in batches according to JPA classes at one time, thereby greatly improving development efficiency. When a user adjusts requirements, the properties of the classes are modified, and one-key generation is very convenient.

This utility model discloses a split-type GIL busbar housing, which relates to the field of power engineering technology. The split-type GIL busbar housing includes an end cover and a busbar unit. The outer wall of the end cover is fixedly connected to the inner wall of the busbar unit. The busbar unit includes a unit shell, which constitutes the main structure of the busbar unit. An air filter is fixedly connected to the inner wall of the unit shell. The air filter effectively filters dust and other impurities from the outside air, preventing them from entering the busbar unit. A male connector is fixedly connected to one end of the inner wall of the unit shell, and a female connector is fixedly connected to the other end. Through the cooperation of the male and female connectors, rapid connection and separation between multiple busbar units can be achieved.

This utility model provides a disc-lock node structure, which includes: a horizontal support frame; a vertical fastener disposed on the horizontal support frame, with its end connected to the end of the horizontal support frame to form an inverted L-shaped structure; and a clamping lock disposed on the horizontal support frame in a position-adjustable manner along its length. This utility model allows the clamping lock to move towards the vertical fastener, enabling both the clamping lock and the vertical fastener to be inserted into the connecting hole of the connecting disc and the fixing hole of the member to be fixed, and to move away from the vertical fastener, so that the clamping lock and the vertical fastener can respectively abut against the inner wall of the fixing hole along the radial direction of the fixing hole and the connecting hole, thus securing the clamping lock to the member to be fixed and achieving a fixed connection between the connecting disc and the member to be fixed.

This invention belongs to the field of aerospace structural component manufacturing technology, specifically relating to an arc-shaped cap and its integrated bending forming method and application. The integrated bending forming method includes the following steps: S1, blanking to obtain a cap plate blank or cap frame blank; S2, milling to machine the external dimensions and hole positions before bending, obtaining a flat, non-arc semi-finished product; S3, bending, placing the flat semi-finished product between the punch and die of a bending die, and applying pressure to press it into an arc-shaped part with a predetermined curvature; S4, stress-relieving treatment of the bent arc-shaped part to eliminate its internal residual stress; S5, shaping, bending and shaping again to stabilize its curvature shape, obtaining the final arc-shaped cap product. This invention effectively solves the problem of springback during sheet metal bending by introducing a combination of bending die design, graded pressure control, and stress-relieving and shaping processes, ensuring the accuracy of the final product's curvature and external dimensions.

The application provides a real-time conversion method for pixels and geographic latitude and longitude in low-altitude photogrammetry, which comprises the following three parts: unmanned aerial vehicle capability confirmation, real-time conversion service implementation deployment for pixels and geographic latitude and longitude in low-altitude photogrammetry, and GIS geographic information platform integration docking. Through real-time data collected by an unmanned aerial vehicle, combined with a computer vision algorithm and a spatial geometric transformation model, the specific pixel points in image data are associated with real geographic coordinates, so that accurate positioning and measurement of ground objects are realized. The application relates to the technical field of low-altitude photogrammetry, and through the cooperative work of real-time data collection by an unmanned aerial vehicle, real-time conversion service for pixels and geographic latitude and longitude in low-altitude photogrammetry, and a GIS geographic information platform, efficient mapping from a photographed image to a geographic coordinate is realized, and accurate and rapid technical support is provided for low-altitude photogrammetry.

The invention relates to the technical field of thermal interface material defect detection, in particular to a nondestructive detection method and system for thermal interface material application defects, and the system comprises an electric displacement table, heating laser, detection laser, a photoelectric detector, an acoustic optical modulator, a lock-in amplifier, an optical element and a data processing unit; the electric displacement table is used for fixing a sample and accurately controlling the position of the sample; the sample is of a silicon-thermal interface material-substrate sandwich structure; the upper-layer silicon wafer of the sample is plated with a metal film as a transduction layer; the heating laser is used for heating the sample; the acoustic optical modulator is used for modulating the heating laser, so that the heating laser heats the sample in a sine wave form; the detection laser is used for detecting sample temperature fluctuation; the photoelectric detector is used for collecting and detecting laser reflection signals; the lock-in amplifier is used for extracting and detecting laser phase and amplitude signals. According to the invention, non-destructive rapid detection of the defects of the thermal interface material in an application scene can be realized.

The invention provides a method for measuring the magnetic moment of a transition metal material based on XPS, and the method comprises the steps: selecting a to-be-tested material single crystal, and transferring a single crystal sample into an X-ray photoelectron spectrometer; selecting an X-ray source; setting a test point position, and setting scanning parameters including energy passing, scanning step length, beam spot size and a magnetic lens mode; selecting a peak value of a 2p orbit high-resolution narrow spectrum corresponding to the transition metal contained in the to-be-detected sample as a fixed-height reference signal, and etching the surface of the sample to remove surface pollution; determining the position of a 3s orbit characteristic peak according to a broad spectrum, and collecting a 3s orbit high-resolution narrow spectrum of transition metal contained in the sample; collecting a valence band spectrum or a C1s orbit high-resolution narrow spectrum for correcting a broad spectrum and a 3s orbit high-resolution narrow spectrum; correcting the binding energy by adopting a correction reference, carrying out peak-dividing fitting through XPS peak-dividing fitting software, and extracting characteristic parameters of a 3s orbit spin exchange split peak; and calculating to obtain the magnetic moment of the transition metal material.

The application provides a method for determining the type of defects in a single crystal silicon wafer, comprising the following steps: measuring the particles in the As-Grown state silicon wafer by LST to obtain a first measurement result, and determining a V-rich region according to the first measurement result and a first preset density value; and performing heat treatment on the silicon wafer, and again measuring the particles in the silicon wafer by LST to obtain a second measurement result, and determining a Pv region, an I-rich region and a Pi region according to the second measurement result, a second preset density value and a third preset density value, so as to accurately and effectively distinguish the four region types of the V-rich region, the Pv region, the Pi region and the I-rich region in the single crystal silicon wafer by using the particle density, the test result is obviously distinguished, the test stability is high and the repeatability is high, and the requirement of the defect partition type on the silicon wafer is reduced.

The invention discloses a green low-carbon production method of an HG785 steel plate by replacing hardening and tempering with direct quenching and tempering, the thickness of the steel plate is 30-50mm, and the production method comprises the following steps: smelting and continuously casting various components according to a reasonable proportion; heating and rolling; directly quenching; two-phase region coupling tempering; and after discharging, performing air cooling or water mist cooling to room temperature to obtain a finished steel plate. The production method provided by the invention is high in universality, low in modification requirement on an existing medium-thickness plate production line (with accelerated cooling and tempering capabilities), easy to realize industrial large-scale production and remarkable in economic benefit and social benefit; through the collaborative design of'component fine adjustment and gradient quenching + two-phase region coupling tempering ', the mechanical property of the steel plate comprehensively reaches the standard (the yield strength is larger than or equal to 785 MPa, and the impact energy stability at the temperature of-40 DEG C is larger than or equal to 80 J) while greenness and low carbon are achieved, it is proved that'green production and product performance improvement can be synchronously achieved', and the practicability and popularization value of the green low-carbon technology are further enhanced.

This invention discloses a method, device, and control terminal for detecting blanket kicking, belonging to the field of sleep monitoring technology. The blanket kicking detection method includes the following steps: Step S10, acquiring the temperature of the target blanket at each target location; Step S20, calculating the difference between the temperature at each target location and the previously acquired temperature at each target location to obtain the corresponding temperature difference value; Step S30, when at least two of the temperature differences at each target location are greater than a first temperature change threshold, or at least one temperature difference is greater than a second temperature change threshold, it is determined that the target blanket has been kicked off, where the second temperature change threshold is greater than the first temperature change threshold. This invention can continuously and effectively monitor whether a child kicks off their blanket.

The application provides a method for post-processing of a photosensitive resin component, and belongs to the technical field of photosensitive resin, and comprises the following steps: immersing the photosensitive resin component into a solution to obtain an intermediate; and sequentially performing atomization treatment and solidification on the intermediate to complete the post-processing. The photosensitive resin component is placed in an atomized environment for photocuring, the surface properties of the component are improved, the adhesion of the model surface is reduced to a certain extent, the surface color of the original component is changed, the surface smoothness is increased, the surface quality of the component after solidification is improved, the surface protection effect of the component is achieved, and the service life of the photosensitive resin component is prolonged.

The application belongs to the field of biopharmacy and bioconversion, and particularly relates to a lipase mutant and application thereof. The lipase CALB mutant of the application is obtained by adopting single-point mutation or combined mutation on positions 40, 134, 154, 189, 278 and 281 of the amino acid sequence shown in SEQ ID NO. 1. The mutant greatly improves the stereoselectivity in catalyzing the production of (S)-3-cyclohexene-1-methyl formate from racemic 3-cyclohexene-1-methyl formate. Compared with the traditional chemical method for preparing (S)-3-cyclohexene-1-methyl formate, the lipase CALB mutant provided by the application has high stereoselectivity, mild reaction conditions, is friendly to the environment, has reduced requirements on equipment, greatly reduces the production cost, and shows a wide application prospect in industrial application.

The high-precision piston rod connecting structure comprises a piston rod, the upper end of the piston rod is connected with a piston body, the lower end of the piston rod is connected with a crosshead, the upper end of the crosshead is connected with a positioning flange with a center hole, and the lower end of the piston rod is a reducing end transited through a conical surface section. The reducing end penetrates through the center hole of the positioning flange and is stretched and locked by a first fastening structure; the upper section of the center hole of the positioning flange is a taper hole matched with the conical surface section of the piston rod; the upper end of the piston rod penetrates into a center hole of the piston body, is stretched and locked by a second fastening structure and is provided with an anti-rotation structure. Automatic centering is achieved through conical surface matching, stable pre-tightening force is provided in cooperation with a double-fastening structure, the problems that a traditional connecting structure is insufficient in precision and poor in locking reliability are effectively solved, the operation precision and stability of a compressor are greatly improved, and meanwhile the compressor connecting structure has the advantages of being convenient to install and maintain and long in service life.

The application discloses a preparation method of Al / NH4CuF3 metastable intermolecular complex. The method is characterized in that: firstly, NH4CuF3 with a nano-network structure is prepared through a solvothermal reaction; then, n-Al is filled into the nanopore channels of the NH4CuF3 in a manner of ultrasonic-assisted dispersion, so as to form n-Al / NH4CuF3 MICs with good dispersity. The n-Al / NH4CuF3 MICs prepared by the method can etch a passivation layer and reduce the reaction energy barrier of the aluminum powder and an oxidizing agent, depending on the low-temperature decomposition of the NH4CuF3 to release F and the thermal decomposition of the NH4CuF3 to generate HF. In addition, a large amount of gaseous products are generated by the decomposition of the NH4CuF3, so that the generation of a reaction sintering phenomenon is relieved, and the combustion efficiency of the n-Al is improved.

The invention provides a cefcapene pivoxil composition and a preparation process thereof, and relates to the field of pharmaceutical preparations. The cefcapene pivoxil composition disclosed by the invention comprises cefcapene pivoxil particles, and the cefcapene pivoxil particles are prepared by the following process: preparing medicine carrying particles containing the cefcapene pivoxil by using the cefcapene pivoxil and pharmaceutically acceptable auxiliary materials; and heating and melting the hydrophobic coating material into a liquid state to obtain a coating solution, and coating the drug-loaded particles with the coating solution to obtain coated particles. The hydrophobic coating material is heated and melted into a liquid state to coat the drug-loaded particles, and compared with a method for coating by using solid powder, the liquid coating material has lower requirements on equipment and can more conveniently realize control on the coating speed so as to form a more uniform coating layer. And the temperature in the coating process is lower, so that the stability of the cefcapene pivoxil is ensured. In addition, no organic solvent is used in the coating process, so that the preparation is environment-friendly, organic solvent residues in the preparation are avoided, and the safety of the preparation is improved. The preparation process provided by the invention perfectly solves the problems of taste, stability and safety of the cefcapene pivoxil, reduces the requirements on production equipment, is environment-friendly, and powerfully promotes the further development and clinical application of the cefcapene pivoxil preparation.

The application discloses a shear connector, a steel-concrete composite beam containing the shear connector and a construction method of the steel-concrete composite beam. The shear connector comprises an inverted truncated cone type cylinder (7), a stiffener, a cover plate, a penetrating steel bar (8) and a high-strength bolt (21); the stiffener comprises an integrally formed stiffener bottom plate (13) and a stiffener side plate (14), the size of the stiffener bottom plate is consistent with the size of the lower opening of the cylinder, and the stiffener bottom plate is attached to the lower opening of the cylinder; the stiffener bottom plate is provided with a second connecting hole for connecting the high-strength bolt; the stiffener side plate is arranged around the stiffener bottom plate and is attached to the inner wall of the cylinder; the height of the stiffener side plate is lower than that of the first connecting hole; the cover plate covers the upper opening of the cylinder; the penetrating steel bar transversely passes through the cylinder through the first connecting hole and leaves a connecting section on each side of the cylinder; and the high-strength bolt connects the stiffener bottom plate through the second connecting hole. The application realizes the disassembly and replacement of each component of the shear connector and the prefabricated bridge deck; and the structure form and stress performance of the shear connector are optimized.

The application is suitable for the technical field of laser radar, and provides a laser radar, which comprises a light source, a transmitting module, a receiving module, a transmission module, a detecting module and a signal processing module; the transmission module comprises a first coupler and a plurality of transmission media, wherein the local oscillator beam is transmitted to at least one transmission medium for delay processing through the first coupler, and the delay amount of the at least one transmission medium is different from that of the other transmission media; the detecting module is connected with the transmission module and the receiving module respectively, is used for receiving the echo signal and the delayed local oscillator beam output by the transmission module, performing beat frequency processing on the echo signal and the delayed local oscillator beam to obtain a beat frequency signal, and converting the beat frequency signal into a detecting electric signal; and the signal processing module is electrically connected with the detecting module, is used for determining a to-be-measured object according to the detecting electric signal. The laser radar provided by the application can improve the strength of the detection signal in long-distance measurement.

The application discloses a pre-charging system and a control method thereof, which comprises a single-chip microcomputer, which is used for collecting the voltage of a pre-charging circuit and performing calculation, filtering and duty cycle adjustment of a PWM pulse control signal; the pre-charging circuit comprises a triode Q1, the base of the triode Q1 is connected with the single-chip microcomputer and receives the PWM pulse control signal; one end of a capacitor C1 connected with the collector of the triode Q1, the other end of the capacitor C1 is connected with an NMOS tube Q2 control loop, the PWM pulse control signal is coupled to the NMOS tube Q2 control loop through the capacitor C1, and the on-off of the NMOS tube Q2 in the NMOS tube Q2 control loop is controlled; the drain of the NMOS tube Q2 is connected with the positive pole of a battery group through a pre-charging resistor R10, and the source level is connected with a pre-charging capacitor group, and the time for charging the pre-charging capacitor group is controlled through the on-off of the NMOS tube Q2.

The present application belongs to the technical field of earth space environment monitoring, and specifically discloses a seamless splicing method for environment data based on micro scenes, which comprises the following steps: obtaining three-dimensional grid unit environment data to be spliced; extracting edge features of adjacent surfaces; dynamically matching and correcting the space coordinates of the features of adjacent grids; selecting a physical equation as a constraint condition, and calculating an edge point interpolation result in combination with a credibility weight; checking the spliced edge data, identifying abnormal points, and generating a checking report; if the checking fails, feeding back to the feature extraction step for reprocessing until the threshold is met; and outputting integrated environment data after seamless splicing. The present application realizes accurate alignment of the spatial positions of the edges of three-dimensional grid units, natural transition of physical properties, and time dynamic consistency, and significantly improves the accuracy and reliability of environment data splicing.

The invention discloses a lung function data prediction method and related equipment. The method comprises the following steps: firstly, acquiring expiratory flow velocity data of a person to be detected, determining the highest point of flow velocity acceleration by calculating the acceleration of each flow velocity sampling point, and intercepting explosion data segments of preset time windows before and after the point; and matching a lung function data prediction sub-model corresponding to the to-be-detected person. The sub-model is obtained by training a plurality of groups of expiratory flow velocity sample data. And finally, inputting the outbreak data segment into the sub-model, and outputting the expiratory flow rate data meeting the quality control standard and predicted lung function data of lung function parameters. The outbreak data segment prediction sub-model is intercepted for prediction, and the to-be-detected person does not need to complete acquisition of complete expiratory flow velocity data meeting the quality control standard.

The invention belongs to the technical field of metal material processing, and discloses a cold rolling method for overcoming brittle fracture of non-oriented silicon steel for a new energy automobile, which comprises the following steps: S1, normalizing treatment: heating at 920-1000 DEG C for 2.5-4 minutes; s2, pickling treatment: pickling in an acidic aqueous solution, then soaking in a clean water tank, neutralizing with an alkaline aqueous solution, blow-drying and coating oil to prevent rusting; s3, heating treatment is conducted, specifically, the workpiece is placed in a box-type resistance furnace, and heat preservation is conducted for 20-120 min under the condition of 200-500 DEG C; s4, cold rolling is conducted, specifically, hot rolling is rapidly conducted on a cold-rolling mill; and S5, continuous annealing is conducted, specifically, continuous annealing is conducted at the strip steel speed of 85 m / min to 95 m / min, and the annealing soaking temperature is 920 DEG C to 1000 DEG C. The technical problem that when silicon steel cold rolling is carried out in a laboratory environment, the edge of a cold-rolled plate is cracked or brittle fracture occurs is solved.

The application discloses a semiconductor storage equipment maintenance system and method, wherein the semiconductor storage equipment maintenance system comprises a server and an MR device; the server stores device structure model data of a semiconductor storage equipment, communicates with the semiconductor storage equipment to obtain operation data of the semiconductor storage equipment, and communicates with the MR device to provide data for the MR device; the MR device generates a mixed reality image according to data collected by itself and data obtained from the server and displays the mixed reality image to an operator wearing the MR device; when the MR device receives information about a fault of the semiconductor storage equipment, the MR device generates a mixed reality image which fuses a virtual perspective model of the semiconductor storage equipment, displays the mixed reality image to the operator wearing the MR device, highlights a fault position corresponding to the fault in the virtual perspective model, and displays a reason corresponding to the fault and a troubleshooting scheme. The application enables the operator to intuitively determine an actual position of the fault position in the equipment, and simultaneously displays information such as the reason of the fault and the troubleshooting scheme, thereby facilitating troubleshooting and processing of the fault, greatly facilitating the development of maintenance work, and reducing requirements on the operator.

A eutectic comprising a compound of formula 1 and oxalic acid,

This invention discloses a meltblown material with antibacterial and sound-insulating properties, its preparation method, and its application, relating to the field of meltblown fabric production technology. By adjusting the spinning equipment, the angle θ between the spinneret and the condensing screen, the vertical distance L between them, and other process parameters, the fiber packing pattern and packing density can be altered to obtain a meltblown material with a three-dimensional structure. This increases the specific surface area of ​​the meltblown material, effectively improving its sound absorption and heat insulation effects under the same resistance conditions, and also exhibiting good antibacterial properties. Furthermore, it improves the uniformity of the transverse fibers in the meltblown fabric, reduces the difference in mechanical properties between the transverse and longitudinal directions, increases the fiber bonding strength during the meltblowing process, and thus increases the mechanical strength of the meltblown material. This effectively mitigates the problem of decreased sound absorption efficiency in the obtained meltblown material, and the resulting meltblown material has high bulkiness.