126results about How to "Ensure repeatability" patented technology

The invention relates to the technical field of antibacterial materials, and provides a light-enzyme-heat synergistic antibacterial nano composite material and a preparation method thereof.The preparation method comprises the steps that 1, a copper-based chalcogenide with a plasma resonance effect serves as a structural template, a transition metal oxide intermediate layer and a bismuth oxyhalide epitaxial layer are sequentially constructed on the surface of the copper-based chalcogenide with the plasma resonance effect through a step-by-step continuous solvothermal method, and the copper-based chalcogenide with the plasma resonance effect serves as the structural template; forming a core-shell heterojunction with Z-type energy band matching; (2) pre-assembling a natural enzyme and a monatomic nano-enzyme in a buffer system to form a composite catalytic unit with an electron transfer channel; and (3) by taking the core-shell heterojunction as a polymerization core, under the precise temperature control condition of 0-10 DEG C, initiating active free radical polymerization through an interface, constructing a thermal response polymer shell layer on the surface of the heterojunction, and encapsulating the composite catalytic unit in a functional microdomain of a polymer network in situ. The anti-bacterial fabric can achieve a better synergistic anti-bacterial effect.

The invention relates to a low-fault-energy micro-twin synergistic deformation cobalt-based alloy and a preparation method thereof, and belongs to the field of cobalt-based high-temperature alloys. According to the alloy, on the basis of Co-Al-W, Ti and Ta which are smaller than or equal to 4 wt% are added according to calculation of a first principle, and the stacking fault energy is controlled to be-95 mJ / m < 2 > to-89 mJ / m < 2 > (0K). Aiming at the defect of insufficient high-temperature plasticity of the gamma '-phase strengthened cobalt-based alloy, an electronic structure is accurately regulated and controlled through a first principle, intrinsic stacking fault energy is designed to reach an optimal negative value interval, a micro-twin mechanism is activated, dislocation slippage and micro-twin coordination is realized, and the problem of sudden plasticity drop caused by single deformation mechanism (dislocation slippage leading) and grain boundary weakening of a traditional alloy is solved; the high-temperature strength and the plasticity are synchronously improved.

The invention relates to the technical field of laser measurement, in particular to a pivot base multi-dimensional error detection device based on laser scanning, which comprises a laser measurement device and an intermittent annular conveying device, a plurality of tooling plates are arranged on the intermittent annular conveying device, a driving assembly is arranged on the intermittent annular conveying device, and the driving assembly is connected with the laser measurement device. A mounting box is arranged on the tool plate, and an angle conversion assembly and a rotating assembly are arranged in the mounting box; through organic cooperation of three core mechanisms of transmission and driving time sequence cooperation, rotation and revolution mode switching and layered elastic driving, key problems of multi-degree-of-freedom cooperative control, single ball head motion function, driving failure in an inclined state and the like of an existing laser measurement system are effectively solved. And the completeness of workpiece three-dimensional form and position error detection is obviously improved.

This application relates to the field of vehicle braking component testing technology, and particularly to a calibration and testing device and method based on an electric vehicle electronic fuel dispenser. The calibration and testing device includes a fixing fixture, a wiring harness connection unit, a host computer system, a transmission unit, and a PLC control system. The fixing fixture is used to hold the electric vehicle electronic fuel dispenser to be tested. The wiring harness connection unit includes a power supply and a calibration programmer. The host computer system is connected to the calibration programmer via a universal serial bus port. The transmission unit includes a positioning fixture, a telescopic cylinder, and a servo motor. One end of the positioning fixture is fixedly connected to the servo motor, and the servo motor is fixedly connected to the telescopic cylinder. One end of the PLC control system is connected to the host computer system via a network cable. This application ensures the synchronization and consistency of calibration and testing procedures for different fuel dispensers, and allows for intuitive comparison of line graphs of test results from different angles of the same fuel dispenser, achieving fully automated operation and quantitative performance evaluation.

The utility model provides a kind of construction sand material bulk density detection device, including base, the top of base is provided with weigher, the top of weigher is placed with measuring cylinder, support assembly for keeping the stable work of weigher is arranged between weigher and base, the top of weigher is provided with the connecting assembly for keeping the stable of measuring cylinder;The top of base is provided with the rotation and beating assembly for allowing measuring cylinder to rotate and can be knocked to measuring cylinder to make sand material keep compact, the support assembly includes annular frame fixedly connected to the upper surface of base, the inner wall of annular frame is slidably connected with annularly arranged support block. Through the rotation and beating assembly set, measuring cylinder can be rotated, and the rotating measuring cylinder can be knocked, which can effectively destroy the bridge structure between sand material particles, so that the sand material inside measuring cylinder can reach the compact state, thereby ensuring the accuracy of sand material density value detection.

The utility model discloses a wind tunnel rack, and relates to the technical field of automobile part test and aerodynamic measurement. The device comprises an air pipe, a conical cover is fixedly arranged at one end of the air pipe, a pipe head is fixedly arranged at the other end of the air pipe, an air supply assembly is arranged at one end of the conical cover, and testing assemblies are arranged on the air pipe and the pipe head. The air supply assembly comprises an air blower; an air valve is assembled at an air suction opening of the air blower; according to the utility model, the whole device is composed of the fan module, the control module, the sensor module, the air duct system and the test cavity, and all the modules are connected through standard interfaces, so that rapid assembly, disassembly and maintenance are facilitated, and the device is suitable for multi-scene deployment; the rotating speed of the air blower is accurately adjusted through the frequency converter, and a full-range speed wind field from low speed to high speed can be simulated in combination with a pressure difference conversion algorithm, so that the test is closer to the actual driving working condition, and the reference value of data engineering is improved.

The utility model relates to sheet metal bending processing field, specifically speaking, it is angle detection device for sheet metal shell bending processing, including the fixed setting on the sheet metal outer wall fixed part, the fixed part is provided with the movable locating plate, the locating plate is provided with the movable detection board, the detection board can be with the other outer wall of sheet metal spare abuts, the locating plate is provided with the detection unit that detects the board adaptation, the utility model discloses angle detection device for sheet metal shell bending processing, through the detection reference is directly fixed on the workpiece surface, effectively promotes the stability and accuracy of measurement, avoids the shaking and error that handheld measurement brought, can flexible adaptation different size and angle's bending piece simultaneously, and the versatility is strong, can also realize quick alignment and contact, simplifies the operation process, and can directly read the bending angle value, need not additional calculation, significantly improves the detection efficiency, effectively guarantees sheet metal processing precision.

The invention discloses a cavitation shot peening surface strengthening method and system based on cooperation of high hydrostatic pressure and spherical focused ultrasound. The method comprises the following steps: establishing and maintaining a hydrostatic pressure environment higher than 0.1 MPa in a high-pressure processing cavity filled with a degassing liquid medium; the to-be-machined surface of the workpiece is positioned in a sound field focal region of the spherical focused ultrasound transducer; and in the high hydrostatic pressure environment, a transducer is driven to work so as to generate a cavitation bubble group in a space confinement range in a focal region of the transducer, and meanwhile, the workpiece is controlled to move according to a preset path, so that cavitation collapse impact acts on a target region on the surface of the workpiece. The device comprises a high-pressure processing cavity, a spherical focused ultrasonic transducer, a multi-degree-of-freedom movement mechanism and a control system. Through cooperation of high hydrostatic pressure constraint and the spherical focusing sound field, precise localization and energy strengthening of the cavitation effect are achieved, a plastic deformation layer can be efficiently and controllably introduced to the surface of a metal material, the surface hardness can be remarkably improved, a residual compressive stress layer is formed, surface layer grains are refined, and the method is suitable for precise surface strengthening of complex components.

The integrated microfluidic detection chip comprises a liquid conveying channel, the upper end and the lower end of the liquid conveying channel are each provided with an inlet, the center position of the side end of the liquid conveying channel is communicated with a mixing channel, the other end of the mixing channel is communicated with a flow velocity difference channel, and the flow velocity difference channel is communicated with a flow velocity sensor. An electrode detection disc is arranged on the side face of the flow velocity difference channel in a communicating mode, and a circular barrier is fixedly arranged in the electrode detection disc. Compared with a traditional detection chip, the integrated microfluidic detection chip based on dual-channel flow velocity difference vortex enhancement has the following remarkable advantages: a breakthrough in mass transfer limit is achieved: through multiple physical coupling of dual-channel flow velocity difference, incident angle optimization and a circular barrier, substance transmission is converted from single molecule diffusion to active vortex driving; the bottleneck that mass transfer of a microfluidic system is limited is solved, and in-situ dynamic refreshing of a detection interface is realized by an automatically generated discrete sample injection mode.

This utility model relates to the field of biomedical technology and discloses a professional shaker for gynecological liquid-based cytopathology, comprising a base, an outer shell, an inner shell, and a support assembly. A vibrating base plate is mounted on the top of the base, and a vibrating assembly is mounted on the bottom of the vibrating base plate, located within the inner cavity of the base. The outer shell is mounted on the top surface of the vibrating base plate, and a top cover is detachably connected to the top of the outer shell. A first magnetic connection part is mounted on the bottom of the inner side wall of the outer shell. The inner shell is located within the inner cavity of the outer shell, and a second magnetic connection part is mounted on the bottom of the outer side wall of the inner shell, magnetically connected to the first magnetic connection part. The top of the inner shell contacts the top cover. The support assembly is mounted on the inner wall of the inner shell, and several cell fluid tubes are detachably connected to the support assembly. This utility model enables precise vibration and temperature control, allowing for the simultaneous and efficient processing of multiple gynecological samples, thus improving work efficiency.

This invention discloses an integrated torsion and tensile testing machine, comprising a support frame. A clamping and fixing head is installed on one side of the support frame, and a power clamping device is fixedly installed on the other side of the support frame. A power drive mechanism is installed on the other side of the power clamping device, driving the power clamping device to rotate. Two sets of clamping mechanisms are installed in the clamping cavity, and the two sets of clamping mechanisms are staggered and distributed in the clamping cavity, with different clamping points in the length direction. This invention integrates torsion and tensile testing structures into one, simplifying the structure, significantly reducing the size and weight of the equipment, improving mobility and applicability. Furthermore, the fixing points of the clamping mechanisms on the workpiece can be easily changed by simply adjusting the power drive mechanism. The operation is simple and requires no additional tools, eliminating the need for manual disassembly and assembly, greatly shortening the preparation and replacement time for the test, and making the testing process more efficient and smooth.

This utility model relates to the technical field of electronic component testing equipment, specifically a Kelvin testing device. It includes a high-temperature resistant insulating housing, an adjustment bracket, a high-temperature resistant insulating cover, a push-button switch, and an inert gas inlet. The adjustment bracket is installed inside the high-temperature resistant insulating housing, and the component under test (DUT) is placed on the adjustment bracket. The position of the adjustment bracket is adjustable to ensure that the DUT is aligned with the test point. The high-temperature resistant insulating cover is hinged to the high-temperature resistant insulating housing, and the push-button switch is installed on the high-temperature resistant insulating housing, allowing the cover to be opened and closed by pressing the switch. The inert gas inlet is fixed to the high-temperature resistant insulating housing and connected to an inert gas source pipeline. It provides a stable testing environment, adapts to DUTs of different sizes, is high-temperature resistant and insulating, and protects the safety of the tested component.

The invention provides a color feature extraction and correction method and system for drug sensitive plate MIC value interpretation and a computer readable storage medium. The method comprises the following steps: acquiring a to-be-processed drug sensitive plate image; performing visual preprocessing such as exposure, contrast and white balance on the image according to the configuration file; high-precision alignment correction of the image is realized by using ORB feature detection and a BFMatcher matching algorithm; generating a transparent mask with an Alpha channel based on predefined hole position contour data, and performing non-destructive target segmentation on the aligned image; and converting the target region to an HSV color space, extracting H-channel hue features, executing cyclic correction, eliminating the problem of numerical value jump of the red region, and obtaining stable color feature data. The method has the advantages of being high in image registration precision, accurate in segmentation, stable in color feature, high in robustness and the like, and automatic and standardized interpretation of the MIC value of the drug sensitive plate can be achieved under different shooting conditions.

The application provides a method and equipment for processing microstructures by controlling Bessel laser side lobes, and is used for solving the problem that Bessel beam side lobe energy is not effectively utilized and it is difficult to realize high-quality and high-efficiency processing in the prior art. The application specifically comprises the following steps: in a first axial region, adjusting the number of sub-pulses of a burst pulse and laser power to determine first laser parameters that can make the main lobe process deep micro-holes and inhibit the side lobe processing; in a second axial region, adjusting corresponding parameters to determine second laser parameters that can make the main lobe and the side lobe processing region fuse to form a continuous Y-shaped groove; then, according to the obtained parameters, arch-shaped scanning is carried out in the two axial regions respectively, and high-depth-ratio micro-holes and micro-taper structure arrays are sequentially processed. The application realizes accurate control and utilization of Bessel side lobes by optimizing the parameters of Bessel burst pulses in different axial regions, and provides a technical scheme for high-performance manufacturing of special antireflection optical windows in aviation and aerospace.

This invention provides a stacker crane for aisle storage, including a traveling base beam and a stacking device on the traveling base beam. A buffer device is also provided on the traveling base beam, and an adjustment device is installed at the outer end of the buffer device. The buffer device includes a buffer frame on the traveling base beam, with multiple sets of buffer crossbeams fixedly connected to both sides of the buffer frame, defining multiple buffer levels distributed vertically within the buffer frame. Buffer plates are fixedly connected to the multiple sets of buffer crossbeams, and multiple sets of goods are placed on the buffer plates. A conveying component is provided on the buffer plates, and scanning components are provided on the multiple sets of buffer crossbeams. A contact component is provided at one end of each set of buffer crossbeams. This invention improves storage and retrieval efficiency through multi-level buffering and path optimization, achieves real-time monitoring and automatic correction of goods status through intelligent scanning and pressure sensing fusion, and completes high-precision automatic docking based on laser ranging and electromechanical linkage. Ultimately, it constructs a highly efficient, reliable, and fully automated intelligent warehousing and stacking system.

The invention relates to the technical field of high-elasticity wear-resistant cotton elastic fabric, in particular to elasticity detection equipment for high-elasticity wear-resistant cotton elastic fabric and a detection method thereof.The elasticity detection equipment comprises a fabric conveying seat, an elasticity detection mechanism is arranged in the middle of the top of the fabric conveying seat, and the fabric conveying seat comprises a bottom plate; according to the high-elasticity wear-resistant cotton elastic fabric elasticity detection device, by arranging the fabric conveying base and the elasticity detection mechanism, dynamic detection of the elasticity of the high-elasticity wear-resistant cotton elastic fabric is achieved. A double-roller linkage structure is adopted, a tension gradient is formed through synchronous reverse movement of a pull-down roller and a pushing roller, and a high-precision optical scanning technology of a scanning inclined plate is matched, so that stress-strain curves of cloth in different deformation stages can be obtained in real time. In the detection process, a built-in control system of the equipment can automatically adjust the rotating speed of the motor according to preset parameters, and the stability and repeatability of the tension applying process are ensured. Compared with a traditional detection method, the equipment improves the detection efficiency.

The application relates to the field of drawing test devices, in particular to a device for steel pipe drawing test. The device comprises a mounting seat, outer side plates, inner side plates, drawing test assemblies and double-head drawing force applying assemblies. Two groups of outer side plates are arranged on two rotating driving frames respectively; two groups of inner side plates are rotationally arranged on the two groups of outer side plates; a plurality of groups of drawing test assemblies are transversely arranged between the two groups of inner side plates; the end of a drawing test channel is provided with a spraying section, and the middle part is provided with an imaging monitoring section; and a plurality of groups of double-head drawing force applying assemblies are transversely arranged on the two groups of outer side plates. The device is characterized in that the work stations are switched through the rotation of the outer side plates and the inner side plates, the environment control and online monitoring of the drawing test assemblies and the synchronous and accurate loading of the double-head drawing force applying assemblies are closely linked, the batch automatic operation of the steel pipe drawing test is realized, and remarkable progress is achieved in the aspects of clamping precision, stress state control and deformation measurement accuracy.

The application discloses a beef cattle body condition scoring system based on computer vision and pose estimation, and particularly relates to the field of three-dimensional point cloud data processing and analysis, and is used for solving the problem that the surface model and geometric size measurement are inaccurate due to point cloud data blurring when the prior art reconstructs the three-dimensional surface of a biological body covered with hair; the three-dimensional point cloud data of beef cattle is acquired, candidate skin point sets are preliminarily screened according to the statistical characteristics of the local depth distribution of each point, the candidate points are optimized based on the geometric continuity constraint of the local surface of the candidate points, thereby the three-dimensional points representing the skin surface are accurately separated, the optimized point sets are used to reconstruct a three-dimensional surface model, the model is standardized and projected to generate a two-dimensional contour, the projection distance between key points on the contour is measured to obtain body size parameters, and finally, the body condition score is generated according to the parameters; the accuracy and robustness of reconstructing the surface of a biological body from three-dimensional point cloud and calculating the geometric size thereof under the interference of hair are improved.

This application discloses a breast health monitoring device and system, comprising: a flexible, conforming shell with a hemispherical or near-hemispherical flexible structure for conforming to the curved surface of the breast; a rotating handle connected to the flexible shell via a rotating shaft for stepwise rotation of the flexible shell after the pressure is within the effective range and stabilized; a sensor module disposed on the skin surface of the flexible shell for collecting breast ultrasound signals, pressure signals, and temperature signals; a main control module for real-time detection based on the collected data, issuing a prompt for re-collection when the data is invalid, and uploading valid data to a terminal application when the data is valid; and an application module communicating with the main control module for displaying collected data, outputting monitoring reports, historical trend comparisons, and anomaly alerts. This application provides an easy-to-operate home breast health monitoring device that features press-to-attach, stepwise rotation, automatic data collection, and mobile phone-based reporting.

The invention discloses an aircraft part boundary line grid node distribution and anisotropy parameter prediction method, and relates to the field of automation and intellectualization of simulation pretreatment of computational fluid mechanics, and the method comprises the steps: determining geometric data, part semantic tags, calculation conditions and boundary lines of an aircraft CAD model; utilizing the trained multi-task graph neural network model to perform grid region type intelligent classification on the boundary line to obtain an isotropic or anisotropic classification result; then, according to a classification result, predicting a sub-network through differentiated parameters corresponding to the region types in the model, and predicting a grid control parameter set corresponding to each boundary line for each boundary line; and finally, driving a grid generator to automatically generate a high-quality surface grid based on the parameter set. According to the method, full-process intelligent decision making from semantic information to grid generation strategies and parameters is achieved, a traditional method depending on artificial experience is replaced, and the automation degree and efficiency of CFD pretreatment and the consistency of grid quality are remarkably improved.

This invention belongs to the field of high-temperature heat pipe performance testing technology, specifically relating to a fully autonomous adaptive heat pipe heat transfer performance testing method. It includes the following steps: Step S1: Generating a heat flux density benchmark based on geometric features; Step S2: Using P... base Based on this, differentiated power loading is performed using a stage-dependent loading coefficient β. During step S2, steps S3 to S5 are executed in parallel: Step S3: Parallel execution of adaptive physical stage switching based on a dual criterion of "temperature-anomaly"; Step S4: Parallel execution of autonomous steady-state determination for each power loading at key temperature points in the linear heat transfer stage and during each power loading in the limit approximation stage; Step S5: Parallel execution of full-cycle automated safety protection based on monitoring the second derivative of the evaporation section temperature. The beneficial effects are: improved adaptability of the testing method, compatible with heat pipes of different geometric dimensions; and effective improvement of testing efficiency through the implementation of a staged control strategy.

The invention provides a clamping device for stamping die machining, which is applied to the technical field of stamping equipment, and comprises a lower die holder, a carrying plate and a clamping assembly, the lower die holder is provided with an accommodating groove, and the size of the accommodating groove is larger than that of a workpiece; the number of the clamping assemblies is at least two, and each clamping assembly comprises a first sliding block, a clamping piece, a base and a push block. The loading plate and the pushing block are both connected with the lifting plate, the pushing block is in driving fit with the clamping assembly, and the loading plate is arranged in the containing groove of the lower die base; when the lifting plate moves downwards, the pushing block drives the clamping assembly to move towards the center to clamp a workpiece, and meanwhile, the carrying plate moves downwards to give way; when the lifting plate moves upwards, the pushing block enables the clamping assembly to loosen the workpiece, and meanwhile the carrying plate moves upwards to eject the workpiece out of the containing groove. Mechanical linkage of the clamping function and the material ejecting function is achieved, the equipment structure is simplified, the convenience and safety of feeding and discharging are improved, the requirement for the workpiece placing precision is low, and the device is suitable for machining of various stamping parts.

The utility model provides a scraper fineness meter calibrating device which comprises a calibrating workbench, a calibrating jig, a scraper fineness meter, a driving case, a calibrating screw rod, a driving motor and an identifying structure, the calibrating jig is installed at the front end of the surface of the calibrating workbench, the scraper fineness meter is placed on the calibrating jig, and the driving case is installed on the calibrating screw rod. The driving case is mounted at the rear end of the surface of the verification workbench; the verification screw rod is mounted in front of the driving case, the driving motor is fixedly mounted at the top of the driving case, and an output shaft of the driving motor is connected with the verification screw rod; the identification structure is slidably mounted in front of the driving case and is engaged with the verification screw rod; according to the utility model, with the arrangement of the verification tool and the identification structure, a large amount of workers are not required to participate in verification, the accuracy of obtained information is high, and the verification process is simple.

The invention discloses a waveform-controllable plasma processing method and system, and belongs to the technical field of semiconductor manufacturing processes. Providing a programmable control radio frequency power waveform to a bottom electrode in the plasma cavity as a bias voltage, wherein the programmable control radio frequency power waveform comprises a pulse waveform and a slope waveform; plasma control variables are measured through a sensor arranged at the output end of the plasma cavity; and dynamically adjusting a control signal of a power supply generating the bias voltage based on the detection data of the control variable, and adjusting the radio frequency power waveform to control ion energy distribution and compensate for the charge accumulation effect in real time. According to the invention, independent and accurate control of ion energy and ion flux is realized, and the problems of non-uniform process and device damage caused by wide ion energy distribution, double peaks and charge accumulation in traditional radio frequency bias are solved.

The application provides an automatic pin type arc welding device, which comprises a handheld welding gun and an external device, the handheld welding gun is provided with a shell, one end of the shell is provided with a first clamping groove, an electromagnet lifting assembly is arranged, the electromagnet is provided with an iron core, the other end of the electromagnet is provided with a spring, one end of a first pneumatic assembly is provided with a linear bearing, a distribution assembly is arranged, the distribution assembly is provided with a connecting pipe, one side of the connecting pipe is provided with a notch, the notch is provided with a connecting sleeve, the upper side of the connecting sleeve is provided with a first feeding pipe, and the first feeding pipe, the connecting pipe and the connecting sleeve are communicated. The automatic pin type arc welding device is used, continuous automatic supply and welding of the pin are realized, the welding rhythm is doubled compared with the traditional manual operation, and the production efficiency and the automation level of the pin welding of the inner wall of the boiler are significantly improved.

The invention discloses a clone selection-based mourhua surface modeling method and related equipment, and the method constructs an'antibody-parameter 'iterative optimization framework by simulating the clone selection principle of an immune system, achieves the automatic and intelligent global search of key parameters, and improves the modeling efficiency. The defect that parameters are set by depending on artificial experience in a traditional method can be effectively overcome, and then the objectivity and repeatability of the model are ensured; through loop iteration of a series of collaborative operations such as initialization, evaluation, cloning, variation, supplementation and reselection, convergence from a preset parameter space to an optimal solution can be efficiently achieved, when a precision threshold value is met, stopping and outputting an optimal antibody are achieved, and it can be ensured that a high-precision mourhua face model is obtained in limited computing resources. According to the method, full-process automation from parameter initialization to optimal model output is realized, manual participation can be remarkably reduced, the modeling efficiency is improved, the calculation process is more stable and robust, and the method can be widely applied to the technical field of data processing.

The invention relates to the technical field of plastic sheet processing equipment, in particular to a full-automatic winding and cutting integrated device for PET sheet production and a method of the full-automatic winding and cutting integrated device. According to the technical scheme, the full-automatic winding and cutting integrated device for PET sheet production comprises a device bottom frame, a moving assembly, a winding assembly and a sheet processing frame, the moving assembly is arranged on one side of the surface of the device bottom frame, and the sheet processing frame is arranged on the surface of the moving assembly; when it is detected that the current winding roller reaches the preset winding diameter or length, a control system instructs a driving motor to drive a mounting frame to turn over, so that a standby winding roller automatically enters a working position, meanwhile, a moving assembly adjusts the position of a sheet processing frame, a built-in cutting and attaching module is aligned with a new winding roller, and then the cutting and attaching module is moved to the new winding roller. The cutting module automatically cuts off the sheet, the overturning and attaching module acts immediately, the new starting end of the sheet is firmly pressed on the surface of a new winding drum, and production pause and artificial quality fluctuation in the reel changing link are thoroughly eliminated.

The present application relates to the technical field of low-temperature negative electrode material preparation of lithium ion batteries, and particularly relates to a silicon-silver-indium ternary alloy thin film negative electrode material for lithium ion batteries and a preparation method thereof, the material comprises 40 at% to 99 at% of silicon, 0.1 at% to 30 at% of silver and 0.1 at% to 30 at% of indium in terms of atomic percentage. The preparation method comprises a melting metallurgy rolling process or a magnetron sputtering deposition process. In the ternary alloy system, the silver improves the electronic conductivity, the indium optimizes the lithium ion diffusion kinetics and the interface stability, and the synergistic effect of the two makes the material exhibit high capacity, high initial efficiency and good rate performance at normal temperature and low temperature. The material system has good compatibility with the above two differentiated preparation processes, and provides a solution for the large-scale and precision application of high-performance silicon-based thin film negative electrodes.

The invention discloses a high-flux toxicity pre-evaluation substitution method based on an acetylcholin esterase target. By integrating an SH-SY5Y nerve cell endogenous AChE and recombinant exogenous AChE dual detection system and relying on an automatic screening system constructed by integrating core equipment such as an automatic pipetting workstation, a constant-temperature incubator and a multifunctional microplate reader, a high-flux toxicity pre-evaluation substitution method based on an AChE target is successfully established and is used for evaluating the neurotoxicity of a compound, and the method has the advantages of high sensitivity, high sensitivity, high sensitivity and the like. The method solves the limitation that a single screening method in the prior art cannot evaluate factors such as target inhibition, cell permeability and metabolic transformation at the same time, and the method is simple, convenient, rapid, high in accuracy and suitable for large-scale primary screening of the AChE inhibitor and early warning of neurotoxicity risks.