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44results about How to "Understand the impact" patented technology

Agricultural irrigation system based on internet of things

The invention discloses an agricultural irrigation system based on the internet of things. A control terminal module is used for remotely control an information collection module and an irrigation machine, wherein the control terminal module is connected with the information collection module through a communication module, and the information collection module is used for collecting soil and air information; the information collection module comprises a temperature sensor, a soil moisture sensor, an illumination intensity sensor and an air humidity sensor; the information collection module is connected with an information processing module; the control terminal module is connected with the irrigation machine through the communication module. The agricultural irrigation system based on the internet of things can achieve startup and shutdown of the irrigation machine, remote wireless startup and shutdown of the irrigation machine and information management of the irrigation machine according to the requirement of a farmer and a site; the system is distributed at each irrigation equipment point of a monitored agricultural irrigation area, achieves concentrated remote management dispatch of agricultural irrigation, saves the farming time of the farmer and improves the agricultural production efficiency.
Owner:叶永伟

Model ice pushing device

ActiveCN106959204AExpand the scope of researchUnderstanding the Effects of Hydrodynamic PerformanceHydrodynamic testingOpen waterControl system
The invention provides a model ice pushing device. A side bridge of a trailer is provided with two die fixing holder, a lower end of a first die fixing holder is provided with an open water test case, a propeller model is arranged on the open water test case, a lower end of a second die fixing holder is provided with a linear module group, a servo motor is mounted on an end part of the linear module group, an output shaft of the servo motor is connected with a leading screw of the linear module group, a connecting plate is fixedly connected on a sliding block of the linear module group, a lower end of the connecting plate is at least provided with a pair of distance-adjustable connectors, lower ends of each pair of distance-adjustable connectors are provided with model ice fixing devices, model ice is placed in the model ice fixing devices, and the side bridge of the trailer is also provided with a control system. The model ice pushing device is suitable for testing and research on model ice of different sizes and different moving states and a ship propeller, and mutual effects between the propeller and ice during ship navigation in an ice zone can be simulated in real way; the model ice pushing device is advantaged by high stability, convenience of operation, high control precision and the like; test accuracy is effectively improved.
Owner:HARBIN ENG UNIV

KIR and ligand genetic typing experimental method

The invention discloses a KIR and ligand genetic typing experimental method. By the technology, the time and labor are saved, and meanwhile, DNA sample capacity is further saved. A multi-PCR technology is adopted, meanwhile, 36 pairs of primers are further combined according to the sizes of PCR products, and finally, amplified reaction is finished in 12 reaction holes. The KIR and ligand genetic typing experimental method is conveniently applied to amplification of 96 pore plates, conventional Taq enzyme is used, typing of all KIR genes and ligands thereof can be finished at a time under the same reaction conditions, and the practicality of the KIR and ligand genetic typing experimental method is greatly improved. Two pairs of primers are used for a KIR gene, the accuracy is improved, anda false negative result is avoided. The KIR gene can be combined to MHC-I type ligand molecules on the surfaces of targeting cells, inhibiting or activating signals are transmitted to regulate the activity of NK cells and T cells, and the KIR and ligand genetic typing experimental method plays an important regulation role in hematopoietic stem cell transplantation, feto-matemal tolerance, anti-infectious immunity, tumor immunity and autoimmune diseases. Therefore, KIR genetic typing facilitates understanding of influences of KIR to tumor immunity, hematopoietic stem cell transplantation and autoimmune diseases.
Owner:韩瑜

Power module dust removing method, system and device and computer readable storage medium

The invention discloses a power module dust removing method, system and device and a computer readable storage medium. The method comprises the steps that the current load rate, the current environment temperature and the current cavity interior temperature of a power module are obtained, the current standard cavity interior temperature corresponding to the current load rate is determined according to the corresponding relation, established at the standard environment temperature, between the load rate and the standard cavity interior temperature; and on the basis of the above conditions, thecurrent theoretical cavity interior temperature can be determined, accordingly, the current temperature difference can be obtained through calculation, and if the current temperature difference is larger than or equal to the preset temperature difference threshold value, a draught fan is utilized for conducting dust removing treatment on the power module. According to the power module dust removing method, system and device and the computer readable storage medium, through real-time knowing of the load rate of the power module and the temperature rise situation in a cavity, the current dust accumulation situation is inferred, the draught fan is utilized for conducting dust removal on the power module in time, the problem that heat dissipation of the power module is slow under the low loaddue to dust accumulation is solved, and the service life of the power module is prolonged.
Owner:KEHUA DATA CO LTD +1

Underground water model output uncertainty analysis method

The invention discloses an underground water model output uncertainty analysis method in combination of a frequency analysis method and a sensitivity analysis method. The frequency analysis process comprises a parameter estimating process and a supposed checking process, wherein a typical distribution function in 7 is selected as an alternative probability density function, the supposed checking is carried out, and a proper probability density function is selected for the underground water level sequence. The sensitivity analysis method comprises stepwise regression analysis and mutual entropy analysis; the stepwise regression analysis can be used for analyzing the trend of the uncertain importance of an input variable, and the mutual entropy analysis can be used for well identifying the uncertainty factor. The method can be used for making up the deficiency in research content of the traditional uncertainty analysis method, analyzing the probability distribution characteristic and identifying the key uncertainty factor influencing the variable probability distribution, thus the production and source of the underground water model uncertainty can be well understood, feedback is provided for the data acquiring work of the underground water model, and the uncertainty of the model is reduced.
Owner:NANJING UNIV

Surface type analytical methodbased onaspherical lens of three-layer liquid structure

PendingCN110068924AChoose simpleJudging facial changesLensSurface typeEngineering
The invention provides a surface type analytical methodbased on an aspherical lens of a three-layer liquid structure. The surface type analytical method comprises the steps that first, an aspherical lens structure model of the three-layer liquid structure is established; second, the changing situation of liquid surface type of the aspherical lens structure model at applied voltage is emulated; third, a surface type numerical value obtained from model emulation is fitted by emulation software into an aspherical surface type function to obtain a corresponding aspherical coefficient; and fourth,the applied voltage is changed, the aspherical coefficient under different voltage and the corresponding relation of the voltage are fitted into function, and the aspherical coefficient and the corresponding relation of the applied voltage are drawn into a curve chart. The surface type analytical method is based on establishment of the three-layer liquid lens structure, by fitting thesurface typeinto theasphericalfunction, multiple groups of the numerical values of the aspherical coefficient under the different voltage are calculated and fitted into the function, then drawn into the curve chart, and concrete analysis of the aspherical surface type is achieved through the curve chart.
Owner:NANJING UNIV OF POSTS & TELECOMM

Visual controllable rough single fracture seepage simulation device and use method thereof

The invention relates to a visual controllable rough single-fracture seepage simulation device and a use method thereof.The visual controllable rough single-fracture seepage simulation device comprises a mixing and stirring unit, a single-fracture simulation unit and a waste liquid recovery unit, the single-fracture simulation unit comprises an expansion conversion interface and a simulation box, and at least four single-fracture movable boards with adjustable inclination angles are arranged in the simulation box; the simulation box comprises a front transparent plate and a rear transparent plate, at least three longitudinal guide rails allowing corresponding single-fracture movable plate surfaces in the simulation box to slide up and down are correspondingly arranged on the inner side surfaces of the front transparent plate and the rear transparent plate, and sliding handles are mounted at the joints of the longitudinal guide rails and the single-fracture movable plate surfaces; the at least four single-fracture movable boards are arranged in the simulation box in an upper-lower two-group mode, a space defined by the upper-lower two-group single-fracture movable boards, the front transparent board and the rear transparent board is a sealed cavity, and an inlet and an outlet of the sealed cavity are an inlet and an outlet of the simulation box. And the influence of the seepage condition between rock fractures and the opening roughness on fracture seepage in different types and different environments can be simulated.
Owner:HEBEI UNIV OF TECH

Device for observing coriolis force and observation method

InactiveCN102063827ALess affected by Coriolis forceIncrease speedEducational modelsTransfer switchReducer
The invention relates to a device for observing coriolis force and an observation method. The device comprises a basin, a tray, a tray holder, a support frame, a water spray pipe, a water outlet pipe, a water return pipe, a pipe joint, a sleeve, a shaft sleeve, a spindle, fillers, a sealing ring, an upper filler pressure cover, a lower filler pressure cover, a water pump, a motor, a large belt pulley, a small belt pulley, a panel, a water pipe, a rotary reducer, a capacitor, a reactor, a transfer switch and the like. The observation method comprises the following steps of: making a basin midline and a rotational center mark, connecting a power supply of the water pump to pump water, and observing the track phenomenon of a water line formed by the water sprayed through a water spray hole; connecting a power supply of the motor to enable the basin to rotate, selecting a rotational speed, a clockwise rotational direction and an anticlockwise rotational direction, and observing the track deflection phenomenon of the water line in a rotating reference system; and when the basin has much stored water, disconnecting the power supply, and draining the water back to a water tank. The method is intuitive in observation and can be used for knowing and researching the coriolis effect and the coriolis force through the track deflection phenomenon of the water line in the rotating referencesystem.
Owner:CHONGQING UNIV

Gear tooth deformation calculation method under introduction of measuring force in gear double-sided meshing measurement

The invention, which belongs to the field of precision testing technologies and instruments, discloses a gear tooth deformation calculation method under introduction of a measuring force in gear double-sided meshing measurement. The method comprises the following steps: (1), causing deforming of a gear tooth by a measuring force in double-sided meshing and thus changing a double-meshing center distance to affect a double-meshing error curve; calculating gear tooth deformation values caused by the measuring force in left and right meshing line directions, and superposing the gear tooth deformation values at left and right meshing lines according to meshing phases to obtain a double-meshing center distance variable quantity caused by the measuring force; (2), dividing the component of the measuring force in the meshing line direction by the gear rigidities on the meshing lines to obtain deformation values in meshing line directions; (3), carrying out superposition of rigidities of all contacts at each meshing line to obtain the gear rigidity of each meshing line; (4), forming the rigidity of the gear at one contact point by the bending rigidity and the shearing rigidity of the gear tooth and the contact rigidity of the gear surface; and (5), calculating the bending and shearing rigidities by a cantilever beam model and calculating contact deformation based on a Hertz formula.
Owner:BEIJING UNIV OF TECH

Autonomous navigation flight control system for deep space impact

The invention belongs to the technical field of deep space exploration, aims at solving problems of poor autonomy, a low integration degree and overlarge size and weight of a current space detector, and relates to an autonomous navigation flight control system for deep space impact. The system comprises a first bearing device and a second bearing device which are separately arranged, and the firstbearing device is internally provided with a flight control and information processing module, a space navigation camera module, an inertia measurement module, an energy module, an attitude and orbitcontrol execution module and a wireless communication module which are in communication connection with one another; and the flight control and information processing module can make the attitude andorbit control execution module complete a preset flight task based on image information collected by the space navigation camera module and inertia sensitive information detected by the inertia measurement module. The second bearing device is driven by the power device to rotate along an axis of the second bearing device, and the first bearing device can rotate and separate relative to the axis of the second bearing device. In the invention, lightweight, miniaturized and integrated autonomous flight control of a space exploration aircraft can be realized.
Owner:BEIJING INST OF CONTROL & ELECTRONICS TECH

An adjustable slope flow test device

The invention provides an adjustable type overland flow testing device which comprises an overland water tank as well as soil fixing grids and a surface plate, wherein the overland water tank is of an overland inclined structure supported by support columns; the soil fixing grids are provided with telescopic support feet; the surface plate is provided with telescopic support feet; the overland water tank is an integrated groove consisting of a base water tank and a surface flow collecting tank which is connected with the water outlet end of the base water tank; the water inlet end of the base water tank is opened; the water outlet end of the base water tank is sealed; first tail water collecting holes are formed in the bottom of the water outlet end of the base water tank; the water inlet end of the surface flow collecting tank is opened; the water outlet end of the surface flow collecting tank is sealed; a bottom plate at the water inlet end is connected with the top end of a vertical sealing plate at the water outlet end of the base water tank; second tail water collecting holes are formed in the bottom plate; the soil fixing grids are arranged on the bottom plate of the base water tank; the surface plate is arranged on the bottom plate on one side of the water outlet end of the base water tank; one end of the surface plate is connected with the soil fixing grids; the other end of the surface plate is connected with the bottom plate of the surface flow collecting tank; a first screening net is arranged between the bottom plate at the water outlet end of the base water tank and the surface plate with the telescopic support feet.
Owner:SICHUAN UNIV

Detection method and device of heating amount of high-temperature superconducting bulk material

The invention discloses a detection method and device of the heating amount of a high-temperature superconducting bulk material. The method comprises the following steps: under a stable magnetic field, calculating according to the temperature data measured by a sensor arranged at the top in a container in advance to obtain first liquid nitrogen loss amount of the container in a pre-set duration; when the container is located in a changeable magnetic field, calculating according to the temperature data measured by the sensor arranged at the top in the container to obtain second liquid nitrogen loss amount of the container in the pre-set duration; and according to a difference value of the first liquid nitrogen loss amount and the second liquid nitrogen loss amount, calculating to obtain the heating amount of the high-temperature superconducting bulk material, which is arranged in the container, is immersed in liquid nitrogen and is located in the changeable magnetic field, in the pre-set duration. According to the detection method and device of the heating amount of the high-temperature superconducting bulk material, disclosed by the invention, the heating amount of the high-temperature superconducting bulk material, which is arranged in the container, is immersed in liquid nitrogen and is located in the changeable magnetic field, can be accurately estimated.
Owner:SOUTHWEST JIAOTONG UNIV

A model ice pushing device

ActiveCN106959204BExpand the scope of researchUnderstanding the Effects of Hydrodynamic PerformanceHydrodynamic testingOpen waterControl system
The invention provides a model ice pushing device. A side bridge of a trailer is provided with two die fixing holder, a lower end of a first die fixing holder is provided with an open water test case, a propeller model is arranged on the open water test case, a lower end of a second die fixing holder is provided with a linear module group, a servo motor is mounted on an end part of the linear module group, an output shaft of the servo motor is connected with a leading screw of the linear module group, a connecting plate is fixedly connected on a sliding block of the linear module group, a lower end of the connecting plate is at least provided with a pair of distance-adjustable connectors, lower ends of each pair of distance-adjustable connectors are provided with model ice fixing devices, model ice is placed in the model ice fixing devices, and the side bridge of the trailer is also provided with a control system. The model ice pushing device is suitable for testing and research on model ice of different sizes and different moving states and a ship propeller, and mutual effects between the propeller and ice during ship navigation in an ice zone can be simulated in real way; the model ice pushing device is advantaged by high stability, convenience of operation, high control precision and the like; test accuracy is effectively improved.
Owner:HARBIN ENG UNIV

Underground water model output uncertainty analysis method

The invention discloses an underground water model output uncertainty analysis method in combination of a frequency analysis method and a sensitivity analysis method. The frequency analysis process comprises a parameter estimating process and a supposed checking process, wherein a typical distribution function in 7 is selected as an alternative probability density function, the supposed checking is carried out, and a proper probability density function is selected for the underground water level sequence. The sensitivity analysis method comprises stepwise regression analysis and mutual entropy analysis; the stepwise regression analysis can be used for analyzing the trend of the uncertain importance of an input variable, and the mutual entropy analysis can be used for well identifying the uncertainty factor. The method can be used for making up the deficiency in research content of the traditional uncertainty analysis method, analyzing the probability distribution characteristic and identifying the key uncertainty factor influencing the variable probability distribution, thus the production and source of the underground water model uncertainty can be well understood, feedback is provided for the data acquiring work of the underground water model, and the uncertainty of the model is reduced.
Owner:NANJING UNIV

Transmission electron microscope electrochemical detection chip and manufacturing method thereof

The invention belongs to the technical field of electrochemical chips, and particularly relates to a transmission electron microscope electrochemical detection chip and a manufacturing method thereof. The transmission electron microscope electrochemical detection chip comprises an upper piece and a lower piece, the upper piece and the lower piece are both silicon substrates with insulating layers on the front and back surfaces, the front surface of the upper piece and the front surface of the lower piece are fixedly bonded through a bonding layer, and the upper piece, the lower piece and the bonding layer jointly form a cavity; and the upper piece is provided with a sample injection port and a first window, the lower piece is provided with a working electrode, a reference electrode, a counter electrode, a second window and a thermometer, and the working electrode, the reference electrode and the counter electrode are all arranged on the second window. The lower piece of the transmission electron microscope electrochemical detection chip provided by the invention is provided with the thermometer, and the thermometer can be used for monitoring the reaction temperature in real time, so that a user can better know the type of an electrochemical reaction heat absorption and release reaction and the influence of the temperature on the electrochemical reaction. The manufacturing method provided by the invention can be used for manufacturing the transmission electron microscope electrochemical detection chip.
Owner:XIAMEN UNIV

Wind speed early warning control method for large hoisting operation equipment based on wind speed signals

PendingCN113291993ATo achieve the effect of safe operationEffectively consider the impactFluid speed measurementCranesInformation processingMeasuring instrument
The invention discloses a wind speed early warning control method for large hoisting operation equipment based on wind speed signals. Wind speed measuring instruments are installed at the top end and / or the bottom of the large hoisting operation equipment, the wind speed signals detected by the wind speed measuring instruments are transmitted to a wind speed monitoring information processing system through wires, wind speed information of a field operation area is monitored in real time, the wind speed monitoring information processing system sets a wind speed early warning value and a limit value according to the requirements of a crane safety operation procedure, early warning or operation stopping information is sent to an operator at the wind speed early warning value and the limit value, and operation in a dangerous environment is stopped in time. According to the wind speed early warning control method, the wind speed signals of the operation environment are monitored through the wind speed measuring instruments, operation early warning or operation stopping indication is carried out according to the requirements of the crane safety operation procedure, and the safety degree of operation is effectively improved.
Owner:HUNAN THERMAL POWER CONSTR CO LTD OF CHINA ENERGY ENG GRP
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