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58results about How to "Verify stability" patented technology

Smart city street lamp intelligent control system and method

The invention discloses a smart city street lamp intelligent control system and method. The method comprises the following steps: performing multi-aspect inspection on each hardware device through a comprehensive intelligent control module and a communication module; the environment monitoring module is used for collecting multi-source data in real time and integrating and analyzing the multi-source data through the data fusion module; generating a dynamic dimming strategy of the common road section and the high-priority road section according to the collected data and regional requirements; brightness adjustment and on-off control are executed one by one through the single lamp control module, and equipment operation parameters are collected through the real-time feedback and monitoring module. The remote management platform is used for monitoring the running state of the street lamp in real time and dynamically adjusting strategy optimization analysis; different operation scenes are simulated through a system simulation test, actual deployment is carried out in a pilot area, and parameters and operation logic are optimized. Through modular design, intelligent decision making and data driving modes, the management efficiency and the energy-saving level of urban street lamps are remarkably improved, and reliable technical support is provided for smart city construction.
Owner:广州市新威电子科技有限公司

Method and system for controlling pressure stability of air pressure test box

The invention relates to the technical field of air pressure control, in particular to an air pressure test box pressure stability control method and system. The method comprises the following steps: carrying out current non-operation state monitoring on an air pressure test box so as to obtain multi-dimensional non-operation state monitoring parameters of the air pressure test box; performing non-running state time sequence change evolution on the multi-dimensional non-running state monitoring parameters so as to generate non-running state time sequence characteristics; acquiring an internal structure diagram of the air pressure test box; performing spatial topology distribution analysis on the internal structure diagram of the air pressure test box based on non-operation state time sequence characteristics, performing three-dimensional point cloud modeling, and constructing a digital twin model of the test box; obtaining a target test scene based on the test log; performing target pressure state analysis on the target test scene, and performing final test scene state mining to obtain final test scene state data; according to the invention, high-controllability and high-precision pressure control of the air pressure test box is realized.
Owner:GUANGDONG KOMEG IND CO LTD

Computer software performance testing method

The invention relates to the technical field of software testing, and discloses a computer software performance testing method which comprises the following steps: S1, determining performance testing requirements: determining key performance indexes according to application requirements, and designing a layered load model; s2, constructing a dynamic test environment: realizing elastic adjustment of resources by utilizing a virtualization technology; s3, distributed performance testing: executing concurrent testing at a plurality of nodes, and simulating access of different users; s4, transverse extension testing: adjusting a virtual machine or a container, and evaluating the system extension capability; s5, collecting and analyzing performance data: analyzing and monitoring the performance data through a time sequence, and identifying a bottleneck; and S6, generating an optimization suggestion and a regression test: automatically generating the optimization suggestion, and verifying the effect through the regression test. Through combination of a virtualization technology, Kubernetes and OpenStack and cooperation with a lateral extension test, the stability and the extension capability of the system under a high concurrency condition are verified, and the overall operation efficiency is improved.
Owner:ATUM TECHNOLOGY (HANGZHOU) CO LTD

Large hydrological model construction method integrating multi-source fusion and dynamic optimization

The invention relates to the technical field of data processing and prediction, in particular to a large hydrological model construction method integrating multi-source fusion and dynamic optimization. The method comprises the following steps: acquiring hydrological monitoring data; performing data preprocessing on the hydrological monitoring data to obtain standard hydrological monitoring data; performing multi-dimensional feature recognition on the standard hydrological monitoring data to obtain multi-dimensional hydrological feature data; and carrying out runoff feature extraction on the multi-dimensional hydrological feature data to obtain hydrological runoff feature data. According to the invention, through a data processing technology, a mode identification technology, a geographic information system technology and a deep learning technology, seasonal change influence evaluation is carried out on hydrological monitoring data; and the hydrological monitoring model is dynamically optimized according to the hydrological geographic position information and the hydrological change evaluation data, so that the response speed of the hydrological monitoring model is higher, and the precision of a prediction result is higher.
Owner:BUREAU OF HYDROLOGY CHANGJIANG WATER RESOURCES COMMISSION

Flexible DC line single-ended protection method and system based on voltage first traveling wave characteristics

The invention discloses a voltage first traveling wave characteristic-based flexible DC line single-ended protection method and system, and the method comprises the steps: collecting fault voltage and current signals, judging whether the fault voltage and current signals meet a starting criterion standard or not, and building a voltage first traveling wave mathematical model under internal and external faults based on the collected signals if the fault voltage and current signals meet the starting criterion standard; introducing a tangent envelope area ratio k into the voltage first traveling wave mathematical model to represent attenuation characteristics of the voltage first traveling wave; analyzing the relation between the tangent envelope area ratio and the transition resistance and the fault position based on the tangent envelope area ratio; and comparing the tangent envelope area ratio with a setting value, and judging internal and external faults. A voltage first traveling wave tangent envelope area ratio is adopted to represent waveform morphological characteristics, and internal and external identification criteria are constructed. The method is not influenced by transition resistance in principle, can quickly and reliably identify a fault area, has relatively high sensitivity to a high-resistance fault, and has certain noise interference resistance. The method can be used for main protection in a flexible direct-current power transmission system.
Owner:XINJIANG UNIVERSITY

Design method of infinite layer nickel oxide with low sodium ion migration barrier

The invention relates to a design method of an infinite layer nickel oxide with a low sodium ion migration barrier, which comprises the following steps of: constructing an infinite layer rare earth nickel oxide and titanium carbide model and expanding cells to ensure that contact surfaces are consistent; constructing a heterojunction model and converting the heterojunction model into a three-dimensional atomic coordinate file; optimizing the surface structures of the two materials, combining and adding a vacuum layer, and then calculating the interface energy; structural changes and sodium ion migration barriers are analyzed, the ionic conductivity optimization rate is calculated, and a theoretical basis is provided for sodium ion battery negative electrode material design. Compared with the prior art, the ion conduction capability of the titanium carbide two-dimensional material as the sodium ion battery negative electrode is calculated and optimized through the first principle, the migration potential barrier is reduced, the infinite layer nickelate and titanium carbide heterojunction is constructed, the sodium ion conduction performance is improved, and a new thought is provided for the design of the sodium ion battery negative electrode material.
Owner:SHANGHAI UNIV

Water-cooled battery box applying FSW welding technology

The invention belongs to the technical field of battery box body welding, and discloses a water-cooling battery box body applying an FSW welding technology, the water-cooling battery box body comprises an aluminum alloy box body, the aluminum alloy box body comprises an upper shell, a lower shell, a fixed side skirt and a predetermined welding groove, the upper shell and the lower shell are symmetrically arranged up and down, and the upper shell and the lower shell are symmetrically arranged up and down; a fixed side skirt is integrally formed on the outer side faces of the ends, close to each other, of the upper shell and the lower shell. According to the method, the battery box is fixed through the clamp made of steel, the bolts and the positioning pins, displacement in the welding process is effectively prevented, the welding precision and stability are guaranteed, meanwhile, fine adjustment is conducted on welding parameter setting, including the rotating speed of a welding tool, the feeding speed, the diameter of the tool, the shoulder width of the tool and the like, and welding quality is improved. Therefore, the uniformity of the welding process and the quality of a welded joint are ensured. In the welding process, preheating treatment and reasonable welding sequence and welding position planning are adopted, and the welding efficiency and the joint quality are further improved.
Owner:JIANGSU MINGZHI NEW ENERGY AUTO PARTS CO LTD

Operation method of multifunctional test system of vacuum angle valve

The embodiment of the invention discloses an operation method of a multifunctional test system of a vacuum angle valve. The multifunctional test system of the vacuum angle valve comprises a control module, a position sensing module, a pressure adjusting module and a negative pressure generating module. The operation method comprises the steps that position information of the position sensing module is obtained through the control module, the pressure of the gas control end or the pipeline inlet of the angle valve to be measured is adjusted through the pressure adjusting module, and the negative pressure of the pipeline outlet of the angle valve to be measured is adjusted through the negative pressure generating module. At least two of the stroke, the response time, the control pressure, the fatigue test and the withstand pressure of the to-be-tested angle valve are tested. According to the operation method provided by the embodiment of the invention, multiple tests can be performed on the to-be-tested angle valve so as to meet the scene requirements of frequent tests and debugging in the research and development process of the pneumatic angle valve.
Owner:CHANGSHA HUASHI SEMICON CO LTD

Machine plate fastener clearance fit sealing performance evaluation method

The invention provides a method for evaluating the clearance fit sealing performance of a plate fastener for a machine. The method comprises the following steps of initial leakage rate detection, air pressure loading test, leakage state detection after helium stamping, data analysis and evaluation and formation of the evaluation method. The leakage state of the aircraft composite fuselage fastener screw hole can be accurately recognized and positioned through an efficient method, and it is ensured that the sealing performance is accurately evaluated. The method is rapid and reliable, can comprehensively detect the sealing effect of the aircraft plate in the service state, verifies whether the aircraft plate meets the design requirements or not, and timely identifies potential weaknesses, thereby enhancing the safety and reliability of an aircraft. Meanwhile, the method can also verify the stability of the sealing performance of the screw hole under the continuous barometric load, and ensures the safe service of an airplane.
Owner:NANJING INTELLIGENT BIG DRONE INST OF TECH LTD

Special valve hard sealing element dissimilar material coating process

The invention belongs to the technical field of valve sealing element coating and plating processes, and discloses a special valve hard sealing element dissimilar material coating and plating process which comprises the following steps: S1, surface pretreatment; s2, coating of a bottom layer coating; s3, coating of an intermediate coating; s4, coating of a top layer coating; s5, quality detection and control; the surface pretreatment comprises cleaning, mechanical treatment, acid pickling and passivation, the coating of the bottom coating comprises nickel plating treatment and chromium plating treatment, the coating of the middle coating comprises ceramic coating and coating curing, and the coating of the top coating comprises tungsten carbide coating and coating heat treatment. The quality detection and control comprises coating thickness testing, adhesive force testing, corrosion resistance testing and wear resistance testing. According to the method, a compact and hard ceramic coating is formed through curing treatment, so that the high temperature resistance of the sealing element is improved, and the wear resistance and corrosion resistance of the sealing element are further enhanced.
Owner:JIANGSU MINGTONG FULU FLUID CONTROL EQUIP CO LTD

Method for detecting chlorine content in trimethylaluminum

The invention relates to the field of analysis and detection, in particular to a method for detecting the content of chlorine in trimethylaluminum, which comprises the following steps: S1) mixing trimethylaluminum solution to be detected and an alcohol solution of alkali in a protective gas atmosphere to obtain intermediate sample solution; in the alcoholic solution of the alkali, the alkali is selected from at least one of potassium hydroxide or sodium hydroxide, and the alcohol is selected from at least one of methanol or ethanol; and S2) carrying out titration detection on the intermediate sample solution by adopting a silver nitrate solution to obtain the chlorine content in the trimethylaluminum. The detection method provided by the invention is a new detection means added relative to the existing detection means, and the method is simple to operate and good in repeatability. The adding standard recovery rate is 94.80%-109.41%, the accuracy and precision requirements of the method are met, and the stability and reliability of the detection method are verified. According to the method for detecting the chlorine content in the trimethylaluminum, the experimental process is safe and controllable, and the price of required instruments is relatively low.
Owner:FIRST RARE MATERIALS CO LTD

Electronic information security storage method and system

The invention discloses an electronic information security storage method and system, particularly relates to the technical field of information storage security, and is used for solving the problem of poor stability and consistency of generating an encryption key by using a PUF (Physical Unclonable Function) under complex and changing environmental conditions in the prior art. Generating a PUF response by using hardware equipment in a controlled environment so as to obtain an initial encryption key; continuously monitoring the stability of the PUF response in the current environment by adopting a quantum decoherence analysis technology based on quantum behavior simulation; environment data around the hardware equipment are collected in real time and compared with a preset environment threshold value, and whether the environment is suitable or not is evaluated; a self-similarity model is constructed through segmented sampling and Hurst index analysis of the PUF response signals, and the stability and consistency of the PUF response signals are further evaluated; and finally, whether the encryption key is generated or not is judged through comprehensive analysis, so that the security of generation and management of the key is remarkably improved.
Owner:JIANGXI UNIV OF TECH

Method and system for monitoring stability of WiFi module

The invention discloses a stability monitoring method and system for a WiFi module, and relates to the technical field of WiFi module monitoring, and the method comprises the steps: installing a test APP on a to-be-tested device, configuring WiFi, connecting an external network, and storing configuration information. The test remote controller of the control device is used for learning the standby or awakening function of the standard remote controller, and remote control is achieved. And the control device sends a standby instruction to enable the to-be-tested device to enter a standby state, and the test APP records the number of entering times. And after a preset delay, the test remote controller wakes up the to-be-tested device, the WiFi service is started for reconnection, and the test APP monitors the network connection state in real time. If the WiFi reconnection is successful, a ping operation is initiated to detect the Internet connectivity, and the number of successful reconnection times is recorded; and if the reconnection fails, recording the number of failures. According to the invention, through an automatic test process, the connection stability of the WiFi module after standby wake-up is effectively monitored, and the test efficiency and accuracy are improved.
Owner:SICHUAN JIUZHOU ELECTRONICS TECH

Over-the-horizon ad hoc network communication equipment testing method and system

The invention relates to the technical field of communication, and discloses a beyond visual range ad hoc network communication equipment test method and system, and the method comprises the steps: 1, building a simulation test place, selecting a plurality of equipment for testing, setting the initial test conditions of the simulation test place, and numbering the plurality of equipment and the initial test conditions; 2, calculating the initial working capability of the equipment according to the initial test condition; 3, adjusting the initial test condition, and recording and storing the number of the adjusted test condition; 4, calculating the equipment adjustment working capability under the adjustment test condition; and 5, calculating an application index of the equipment according to the initial capability value and the adjustment capability value, and selecting the optimal communication equipment according to a calculation result. Various actual application scenes and boundary conditions are covered, it is ensured that the equipment can stably work in various environments, specific requirements of different clients or application scenes are met, the communication equipment is comprehensively tested, and the optimal use equipment is conveniently selected.
Owner:SHENZHEN TENGYUAN ZHITUO ELECTRONICS CO LTD

Aromatherapy composition for treating peripheral phlebitis through transdermal absorption and preparation and application thereof

The invention relates to the technical field of traditional Chinese medicine aromatherapy, in particular to an aromatherapy composition for treating peripheral phlebitis through transdermal absorption as well as a preparation and application of the aromatherapy composition. According to the aromatherapy composition and the preparation thereof, the peripheral superficial phlebitis is subjected to transdermal treatment through traditional Chinese medicine aromatherapy, the total effective rate of 24-hour treatment is 100%, the cure rate is 55%, the cure rate in 48 hours is 97.5%, phlebitis grading reduction is marked as grading difference, the sum of grading differences of 40 patients is 125, and the treatment effect on the peripheral superficial phlebitis is obvious compared with that of traditional and common methods. Compared with a traditional treatment method, the traditional Chinese medicine composition can greatly shorten the treatment time, quickly relieve pain and reduce the occurrence rate of complications, the curative effect is stable and reliable, and the compliance, comfort and acceptability of a patient in the treatment process are very good.
Owner:SHANGHAI YANGPU SHIDONG HOSPITAL

Plane arrangement method for comprehensive treatment engineering construction of drainage pipe network

The invention relates to the technical field of drainage pipe network comprehensive treatment engineering construction, and discloses a drainage pipe network comprehensive treatment engineering construction plane arrangement method which comprises the steps of data collection through a GIS technology, intelligent problem identification, new system design, simulation testing, accurate construction division, safety management planning, construction implementation, system function testing and the like. The GIS technology and the data analysis technology are utilized, intelligent recognition and positioning of the drainage system problems are achieved, the problems of pipeline blockage, aging, corrosion and the like are solved in a targeted mode, and the reliability and stability of the system are improved. Measures such as dynamic simulation testing, accurate construction area division and safety management planning are adopted, the construction quality and safety are ensured, meanwhile, comprehensive system function testing is carried out, the overall efficiency and stability of the system are verified, and a reliable basis is provided for government acceptance.
Owner:THE 5TH ENGINEERING CO LTD OF CHINA RAILWAY CONSTRUCTION BRIDGE ENGINEERING BUREAU GROUP +2

Auxiliary maintenance platform for flow velocity measurement vehicle

The utility model discloses an auxiliary maintenance platform for a flow velocity measuring vehicle, which relates to the technical field of hydraulic engineering and comprises a first upright post and a second upright post, support tables are fixed on the outer sides of the first upright post and the second upright post, and a protection component for protection during maintenance is arranged at the top of each support table. A first supporting rod is fixed to the outer side of the first stand column, and a ball machine probe is installed at the bottom of the first supporting rod. The beneficial effects of the utility model are that the protective rack and the protective frame effectively prevent maintenance personnel from being injured due to accidental falling or impact of external objects in the operation process, and the ball machine probe can monitor the maintenance area in all directions, so that the maintenance progress, the equipment state and the surrounding environment can be observed in real time; the safety and efficiency of maintenance work are improved, the solar panel can supply power to equipment on the platform, dependence on traditional energy is reduced, and the operation cost is reduced.
Owner:SICHUAN JINRUI HUANIAN TECHNOLOGY CO LTD

Method and device for automatically verifying NPU drive stability and performance

The invention relates to a method and device for automatically verifying NPU drive stability and performance. The method comprises the steps that at least one NPU card is installed in a to-be-tested server; the upper computer starts the to-be-tested server by controlling the source controller, and the upper computer controls the to-be-tested server to install a system and a dependency package; executing an Int8 computing power test; executing a pressure test; the upper computer controls the power supply controller to execute power-off and power-on operations on the to-be-tested server; the upper computer controls the server to be tested to install the driver and firmware of the next version; and the upper computer analyzes and counts data. According to the method and the device for automatically verifying the stability and the performance of the NPU driver, different versions of drivers and firmware can be automatically switched. Through the control of the power supply controller, the pressure test is realized, and the compatibility and stability of the drive and the system are verified. The computing power of the NPU card is tested, the actual computing power is obtained, and meanwhile the functions of testing and calculating floating power consumption are achieved.
Owner:POWERLEADER COMPUTER SYST CO LTD

Physical verification platform and method of cooperative pointing control algorithm based on multi-turntable networking

The present invention relates to the field of collaborative pointing control technology, and in particular to a collaborative pointing control algorithm physical verification platform and method based on multi-turntable networking, including capturing the target two-dimensional imaging information when a moving target simulation device moves with a preset motion trajectory through a target perception module, and solving the target three-dimensional position information; calculating the target three-dimensional position information and the turntable attitude angle measurement signal through a collaborative pointing control algorithm development module, and generating a turntable attitude angle control instruction; and responding to the turntable attitude angle control instruction through a control instruction execution module to control the laser pointer on the two-degree-of-freedom turntable to point to the preset bull's eye. The present invention integrates moving target simulation, target perception, collaborative pointing control algorithm development and control instruction execution modules, and can conveniently and effectively verify the feasibility, real-time nature and stability of the collaborative pointing control algorithm in actual application scenarios, and solve the problem of fusion and migration of the collaborative pointing control algorithm and the actual platform.
Owner:广州新华学院 +1

Vascular access outpatient service intelligent management system based on artificial intelligence

The invention relates to the technical field of medical management, in particular to a vascular access outpatient service intelligent management system based on artificial intelligence. The system comprises a patient outpatient service information file integration module, a patient vascular access use risk optimization selection module, a patient vascular access quality abnormity early warning module and a vascular access abnormity feedback management module. The method comprises the following steps: acquiring basic information data of a patient and previous vascular access use record data, performing information file integration processing, performing vascular access suggestion design and access use risk optimization selection, and generating a patient outpatient service optimal selection to establish a vascular access; and monitoring the physiological data of the patient and the use condition data of the vascular access of the patient in real time by using intelligent equipment, performing intelligent abnormal early warning of the vascular access and abnormal feedback management of the vascular access, and generating an abnormal feedback management scheme of the vascular access of the patient so as to execute corresponding abnormal feedback management work of the vascular access of the patient. The efficiency and accuracy of vascular access management can be improved.
Owner:SHANDONG FIRST MEDICAL UNIVERSITY FIRST AFFILIATED HOSPITAL (QIANFO MOUNTAIN HOSPITAL OF SHANDONG PROVINCE)

Python-based laser AGV simulation test method and device

The invention discloses a Python-based laser AGV simulation test method and device, and the method comprises the steps: reading a map data file through a server, analyzing the map data, and setting a test scene and test parameters; a task instruction is sent to the AGV through the server side, a laser navigation interface is called to enable the AGV to execute a simulation test task, and the moving track and state information of the AGV are obtained, remotely monitored and displayed through a B / S architecture-based user service interface set by the client side; and based on the running track and the state information of the AGV, executing a performance optimization strategy on the AGV through the server, and performing fault early warning on the AGV. Through the method provided by the invention, the accuracy and real-time performance of path planning of the AGV in actual operation can be improved.
Owner:TIANJIN SAIXIANG SCI & TECH CO LTD +1

Feature fingerprint-based agricultural product origin identification traceability system and method

The present application relates to the technical field of agricultural product origin identification and traceability, and particularly discloses an agricultural product origin identification and traceability system and method based on characteristic fingerprints, which comprises the following steps: collecting agricultural product samples to obtain a target sample set; marking the target sample set with dominant characteristic fingerprints according to the dominant characteristics of the agricultural products, and performing one-class partitioning on the target sample set according to the dominant marking result to obtain a plurality of one-class sample clusters; marking the target sample set with recessive characteristic fingerprints according to the recessive characteristics of the agricultural products, and performing two-class partitioning on the target sample set according to the recessive marking result to obtain a plurality of two-class sample clusters; comparing the one-class partitioning result and the two-class partitioning result to determine whether to start a successive verification mode or a separate verification mode; based on the successive verification mode, obtaining each verification result, and determining whether to output an actual origin traceability result according to the verification results.
Owner:BEIJING SIECAN TECH CO LTD

A method for targeted design of high-calorific-value energetic alloy materials using coupled element information

PendingCN122091040ADirected Design ImplementationImprove generation iteration efficiencyDesign optimisation/simulationComputational theoretical chemistryData setCrystal structure
This application relates to the field of computational materials science and technology, and particularly to a method for targeted design of high-calorific-value energetic alloy materials by coupling elemental information. The method includes the following steps: First, establishing a dedicated energetic alloy material dataset; then, constructing a deep reinforcement learning model for high-calorific-value energetic alloy materials, training the model based on the dedicated energetic alloy material dataset, directionally generating potential energetic alloy material components, and assigning crystal templates to obtain energetic alloy materials with crystal structures; subsequently, training a calorific value and formation energy prediction model based on the dedicated energetic alloy material dataset, predicting newly generated energetic alloy materials, and selecting high-calorific-value energetic alloy materials; finally, using VASP software for computational verification of candidate materials. This application, based on a smart paradigm for materials research and development, combines a deep reinforcement learning model, a neural network prediction model, and quantum mechanical computational verification to achieve targeted design of high-calorific-value energetic alloy materials.
Owner:XI AN JIAOTONG UNIV

Vibration testing device

The utility model relates to the technical field of battery manufacturing, in particular to a vibration testing device which comprises a vibration testing table, a pressing component, a first fastening component and a positioning component, the vibration testing table is used for placing a to-be-detected object such as a battery pack, the pressing component is used for pressing the to-be-detected object, and the first fastening component is used for fastening the to-be-detected object. The first fastening component is used for fixing the pressing component on the vibration test bench, so that the to-be-detected object is positioned in a first preset direction; the positioning members are connected with the vibration test bench, and at least two opposite sides or at least two opposite vertex angles of the to-be-detected object are provided with the positioning members, so that the to-be-detected object is positioned in a second preset direction and a third preset direction. The battery pack vibration test tool is designed and used for simulating the vibration environment possibly encountered in the transportation process or the actual use process of the battery pack so as to verify the structural stability and the performance reliability of the battery pack, and an important basis is provided for design and improvement of the battery pack.
Owner:SHANGHAI PYLON TECH CO LTD

Turbidimeter based on fisheye lens

The utility model provides a turbidimeter based on a fisheye lens, and belongs to the technical field of turbidimeters. A measuring assembly and a debugging seat are sequentially inserted in an equipment box from front to back, and a battery, a gray scale plate, a calculation scale and a debugging rod are inserted in one side of the debugging seat. The device is reasonable in structure, the detection hydraulic machine drives the detection hydraulic rod to ascend and descend, the detection motor drives the detection shaft to rotate, the detection hydraulic machine and the detection motor enable the detection assembly to adjust the height and the direction, adjustment is carried out in different environments, and the influence of environmental stray light on measurement results is further reduced. The fisheye lens is used for collecting images and the camera is used for imaging, the images are transmitted into the turbidimeter and the detector for detection through the wire, and the characteristic that the energy and polarization state of the incident light are changed due to interaction of the aerosol particles and the incident light is called as the scattering characteristic of the aerosol particles. And the research and detection results of the scattering characteristics can promote the fields of weather observation and the like.
Owner:石方婷

In-situ monitoring method for reaction stability of titanium-containing multiphase electrode in electrolysis process

The invention discloses an in-situ monitoring method for reaction stability of a titanium-containing multiphase electrode in an electrolysis process, and belongs to the field of electrochemical metallurgy. On the basis of the closed gas sensor detection chamber, through gas circuit connection with the molten salt electrolysis furnace, real-time in-situ monitoring of gas production components and concentration in the electrolysis process is realized, so that the specific reaction condition is judged. And the argon bottle, the pressure reducing valve, the flowmeter, the high-temperature molten salt resistance furnace, the water cooling device and the gas detection cabin are connected with the safety bottle and the tail gas bottle through polytetrafluoroethylene hoses. According to the method, the quantitative relation among the gas volume signal, the electrolysis overpotential and the electrode surface area is established, the change of the electrode surface area in the electrolysis process is calculated and analyzed in real time, the electrolysis system is regulated and controlled by adjusting the electrode surface area, inputting the current density and the like to recover stability, and the reason of the change of the electrolysis overpotential is analyzed; and in-situ monitoring of the reaction stability of the titanium-containing multiphase electrode in the electrolysis process is realized. The electrolysis environment is consistent with the commercial titanium molten salt electrolysis environment.
Owner:BEIJING INST OF TECH +2

High-selectivity synthesis method of (3S, 4R)-3-(N-benzyl-N-cyclopropyl) aminomethyl-4-hydroxypyrrolidine-1-carboxylic acid benzyl ester

The invention relates to a high-selectivity synthesis method of (3S, 4R)-3-(N-benzyl-N-cyclopropyl) aminomethyl-4-hydroxypyrrolidine-1-carboxylic acid benzyl ester, 1-benzyl-3-tert-butyl-4-oxopyrrolidine-1, 3-dicarboxylate is subjected to selective reduction reaction in the presence of a chiral catalyst to obtain (3S, 4S)-3-tert-butyl-4-hydroxypyrrolidine-1, 3-dicarboxylate, and the (3S, 4R)-3-(N-benzyl-N-cyclopropyl) aminomethyl-4-hydroxypyrrolidine-1, 3-dicarboxylate is subjected to high-selectivity synthesis to obtain (3S, 4R)-3-(N-benzyl-N-cyclopropyl) aminomethyl-4- The preparation method comprises the following steps: firstly, preparing (3S, 4R)-3-((benzyl (cyclopropyl) amino) methyl)-4-((aryl formyl) oxy) pyrrolidine-1-carboxylic acid benzyl ester, then sequentially carrying out acid-catalyzed hydrolysis, condensation reaction with cyclopropylamine, reduction reaction and substitution reaction, then carrying out Mitsunobu reaction with para-substituted aryl formic acid to obtain (3S, 4R)-3-((benzyl (cyclopropyl) amino) methyl)-4-((aryl formyl) oxy) pyrrolidine-1-carboxylic acid benzyl ester, and hydrolyzing under base catalysis to obtain a target compound. The synthesis method has the advantages of high yield and high selectivity, and is expected to be used for industrial production.
Owner:WUHAN UNIV OF TECH

A static torque detection system for marine gear devices

The present invention discloses a static torque detection system for a marine gear device, including a support seat, a connector, a torque meter, a fixed bracket, a force measuring arm and a force sensor, wherein the support seat is used to fix the gear device to be tested, one end of the connector is connected to the output end of the gear device to be tested, the other end of the connector is connected to the fixed bracket, the torque meter is arranged at the other end of the connector, the force measuring arm is arranged at the input end of the gear device to be tested, and the force sensor is arranged on the force measuring arm. The detection system provided by the present invention adopts a force measuring arm to replace a motor or a diesel engine for input end load, which can effectively save costs and shorten construction period; adopts a method of fixing the output end to replace a motor or a dynamometer to realize static coupling loading of the output end; the gear device to be tested can be accurately loaded, and the stability of the gear device to be tested under full power conditions can be effectively verified.
Owner:CHONGQING GEARBOX

Test method and device of automatic driving decision-making system and electronic equipment

The invention discloses a test method and device for an automatic driving decision-making system and electronic equipment. The method comprises the following steps: acquiring initial capture information collected by a target vehicle in a driving process; based on the initial capture information, generating a target driving track matched with the preset driving scene through an automatic driving decision-making system carried on the simulation equipment; determining a plurality of track data matched with the preset driving scene in the target driving track; and testing the automatic driving decision-making system based on the multiple pieces of trajectory data to obtain a test result of the automatic driving decision-making system. According to the invention, the technical problem of low efficiency of testing the automatic driving decision-making system in the prior art is solved.
Owner:EACON TECHNOLOGY CO LTD

A screen aging test method, system, electronic device and storage medium

The application provides a screen aging test method, a system, an electronic device and a storage medium, relates to the technical field of aging test, and the method comprises the following steps: in response to a user input or a preset program, a test strategy containing signal timing, power supply parameters and monitoring threshold is configured for a target screen to be tested, and control instructions independent of each other and having a time sequence relationship are allowed to be set for a power supply control channel and a signal control channel; an independent control signal corresponding to the target screen to be tested is generated by a control unit to respectively drive a corresponding target power supply control channel and a target signal control channel; working parameters of the target screen to be tested in a test process are collected in real time by a monitoring unit; and when it is determined that the target power supply control channel or the target signal control channel is abnormal based on the comparison result of the working parameters collected in real time and the monitoring threshold, a predetermined processing operation is performed. The technical scheme of the application improves the reliability of screen aging test.
Owner:SHENZHEN CHUANGYUAN MICROELECTRONICS TECHNOLOGY CO LTD