99results about How to "Short duration" patented technology

The invention provides a control system and method for improving the performance of an electromagnetic proportional valve, and the system comprises a controller which is connected with the electromagnetic proportional valve and is used for outputting a trapezoidal wave current signal with a certain frequency to the electromagnetic proportional valve when being powered on, and controlling the opening and closing of the electromagnetic proportional valve, hydraulic oil in the valve body of the electromagnetic proportional valve is stirred along with movement of the valve element, and the problems that the movement speed of the valve element is abnormal and the output pressure is abnormal due to the fact that the content of impurities in the oil is uneven are solved. The controller is further used for outputting a trapezoidal wave current signal to the electromagnetic proportional valve and controlling the electromagnetic proportional valve to be opened and closed when the electromagnetic valve of the whole vehicle operation safety handle switch is opened, new oil enters the electromagnetic proportional valve through the oil inlet in the process that the valve element moves back and forth, and the oil alternately flows out of the outlet and the oil return opening. Impurities flow out through circulation, and the purpose of cleaning is achieved. According to the control system and method, the problem that the electromagnetic proportional valve is poor in consistency due to long-time use and oil pollution is solved.

The invention relates to an explosion impact test technology, in particular to a solid / gas two-phase explosive wave driven aircraft ground test device and method, and the solid / gas two-phase explosive wave driven aircraft ground test device comprises an anti-static floor, a gas distribution system, a test system, a solid explosive fixed initiation device and a tunnel system, the tunnel system comprises a fixed support, a tunnel, a gas circulator, a first gas exchange pipeline and a second gas exchange pipeline, the gas distribution system comprises a high-pressure gas tank, a high-pressure methane gas cylinder and an air exchanger, and the test system comprises an electronic exploder, a pressure sensor and a flame sensor. Modulation of different overpressures and different durations can be carried out by controlling the solid charge amount, the gas concentration, the solid explosive charge amount, the solid explosive type and the like, the overpressure peak value and the duration of explosion shock waves are adjustable and controllable, and the requirement that external loads of an aircraft continuously change in different flight environments is met.

The invention provides an online damping control system and method for a main power supply type wind and light field station. The method comprises the steps that S1, parameters of control algorithm software are adjusted; s2, enabling a multi-machine stability analysis module to calculate a characteristic mode of the wind and light field station; s3, calculating mode traction of each control parameter according to the characteristic mode to obtain a corresponding damping parameter adjustment amount; s4, the damping parameters of all the units are updated, the multi-unit stability analysis module of the station is called again, and online damping control is completed; and S5, if the damping parameter adjustment fails and the system oscillates, sensing the oscillation frequency through the static synchronous machine, and performing concentrated damping injection to suppress oscillation. The damping of the whole station can be improved and the oscillation risk can be reduced under the condition that the running state of each unit in the main power supply type wind and light station changes at any time; after the system oscillates, through concentrated damping injection of the static synchronous machine, rapid suppression of the oscillation is realized, and the duration of the oscillation is reduced.

The invention provides a direct current system pure light CT measurement method and system under fast transient large current and a simulation method, and the method comprises the steps: setting a threshold current Ith, the interval time N of a sample during differential operation, and the time Tdown for keeping in a large current algorithm as preset values; and a condition that a measurement error is generated when a fast transient large current is encountered is avoided by utilizing reasonable setting of a parameter N in a pure light CT (Computed Tomography) demodulation algorithm. Different demodulation algorithms (an Arctan demodulation method of small current and a di / dt integral demodulation method of large current) are selected according to the magnitude of the current, so that the rapid transient large current can be measured more accurately. According to the method, the measurement defects of a traditional pure light CT are overcome, accurate data measurement under rapid transient large current can be achieved, current state quantities of various devices under similar lightning stroke working conditions can be reproduced and analyzed, and the method has remarkable practical value.

The invention discloses a device and a method for measuring dynamic response characteristic parameters of a temperature sensor, and belongs to the technical field of temperature measurement. The measuring device comprises a convection environment, a control unit, and a displacement sensor and an electromagnetic ejection device which are connected with the control unit; the electromagnetic ejection device comprises a guide rail and a conductive sliding block, the conductive sliding block is in sliding connection with the guide rail, the conductive sliding block is used for being connected with a to-be-tested temperature sensor, the to-be-tested temperature sensor directly faces the measuring hole of the convection environment, and the conductive sliding block can move towards the measuring hole of the convection environment under the electromagnetic action; the displacement sensor is arranged at the edge of a measuring hole of the convective environment and used for acquiring the moment when the temperature measuring end of the temperature sensor to be measured enters the convective environment, and the temperature sensor to be measured is connected with the control unit; an environment control device is arranged in the convection environment and is used for regulating and controlling environment parameters of the convection environment; the measuring device can accurately determine the dynamic response characteristic parameters of the temperature sensor, and facilitates sensor model selection in practical application.

The invention provides a method for improving the breeding efficiency of braconus splendens, and belongs to the technical field of insect breeding. According to the method, female bees which are 5-day-old, 6-day-old and 7-day-old and have no egg laying experience after eclosion are used for parasitizing third-year-old Asiatic corn borer larvae. And the parasitism rate, the eclosion offspring number and the female bee number of the braconus splendens are obviously improved. The method is carried out in a small space range, so that the encountering probability of the braconus splendens and the hosts is increased, the time of searching for the hosts by the braconus splendens is shortened, and the parasitic rate of parasitic wasps is increased. The method disclosed by the invention has important significance in efficiently breeding the cotesia macrorrhiza by using the Asiatic corn borer larvae indoors and guiding the field to release the cotesia macrorrhiza.

A display pixel includes an electroluminescent source. The present disclosure relates to a display pixel (12i, j) for a display screen comprising a light emitting circuit (LEDS) comprising at least a first electroluminescent source (LED), a controllable current source (82) for driving the light emitting circuit with a current pulse (ILED, and a driving circuit (70) for controlling the current source, the driving circuit being configured to receive a digital signal (Data) and to control the current source, and a pulse width modulator for supplying current pulses modulated by pulse width modulation and pulse amplitude modulation based on bits of the digital signal.

The application provides a big data-based intelligent manufacturing supply chain management system and method. A cloud big data engine is used to jointly model supplier capacity, logistics timeliness and historical abnormal events based on multi-source data flow of a manufacturing supply chain, and generate a risk probability matrix of material shortage in multiple supply chain nodes. When the risk probability of material shortage of a supply chain node exceeds a material shortage threshold, a risk decision is made on the risk probability matrix and the work-in-process cache amount as a joint state space, with the goal of minimizing total interruption cost and maximizing delivery rate, and a material shortage scheduling scheme of the manufacturing supply chain is output. The material shortage scheduling scheme is distributed to corresponding suppliers and logistics parties through a blockchain smart contract, and order splitting and payment binding are automatically executed to complete the material shortage scheduling of the supply chain. Based on the above scheme, multi-objective autonomous scheduling of material shortage risk of the manufacturing supply chain can be realized, thereby improving the anti-disturbance capability of the manufacturing supply chain under interruption environment.

The invention relates to application of LRG1 in preparation of a medicine for promoting differentiation of macrophages to M1 type and a macrophage activator. The invention finds that the LRG1 activates the macrophages and induces the macrophages to differentiate to the pro-inflammatory M1 type, so that the LRG1 is a new inducible factor activated by the macrophages. The invention provides a new mechanism for macrophage activation, and provides a new target spot and thought for preventing and treating inflammatory reaction and inflammatory reaction related diseases and tumors.

The erosion-resistant magnesian tundish dry material preparation equipment comprises a bottom plate, a top plate, a material mixing assembly, a discharging assembly and a material drying assembly, wherein the bottom plate and the top plate are fixedly connected through a vertical plate; the material mixing assembly is composed of a material mixing barrel, an electromagnetic valve, a stirring roller and a plurality of stirring paddles and used for stirring and mixing powder of all components of the dry material, the material mixing barrel is fixedly installed below the top plate, and the electromagnetic valve is installed at the lower end of the material mixing barrel. The invention also discloses a preparation method of the erosion-resistant magnesian tundish dry material. The preparation method comprises the following steps: determining the materials according to the ratio, determining the proportion of the raw materials of the dry material according to product requirements, and replacing the rotating parts and the fixed parts according to the proportion. The step of manually and quantitatively measuring the proportion can be omitted, it is guaranteed that matching errors do not occur during large-batch production, then it is guaranteed that the raw material proportion of the dry materials meets the product requirement, and the dry materials obtained after mixing can be dried so that the dry materials can rapidly reach the dryness required by the product.

The invention relates to a tool holder (10) comprising a body (11) extending along an axis A-A, which body comprises, at one end thereof, a base (12) for fastening to a numerically controlled machine tool (20) and, at the other end, a rotatably movable head (13) comprising at least two spindles (14, 14 ', 14' ') for holding a tool, 14 ', 14' ') each intended to receive a cutting tool (15, 15', 15 '') in an engaged manner, the spindles occupying, depending on the angular position of the head (13), a working position in which they are intended to perform a machining operation on a workpiece held in position in the clamp (21) or a standby position in which they are withdrawn from the workpiece, each spindle being configured to be controlled independently of the other spindles, therefore, the cutting tool carried by the main shaft is fixed or driven to rotate regardless of the position occupied by the main shaft.

The present invention belongs to the technical field of diesel engine fuel control and regulation, and relates to a fuel cut-off control cylinder for a high-power diesel engine, comprising a cylinder body, a front end cover and a rear end cover respectively fixedly mounted at the front and rear ends of the cylinder body, an oil cut-off piston with a rear end tangent to the inner wall of the cylinder body is passed through the front end cover, a control piston that pushes the oil cut-off piston to move along the length direction of the cylinder body is disposed outside the oil cut-off piston, a fuel control air inlet is provided on the cylinder body at the front end of the control piston, and a fuel cut-off air inlet is provided on the cylinder body at the rear end of the oil cut-off piston, a closed space formed by the front end cover, the cylinder body and the control piston is the control cylinder, and a closed space formed by the cylinder body, the control piston and the oil cut-off piston is the cut-off cylinder, the control cylinder is mounted on the diesel engine, can adjust the fuel amount of the injection pump, control the fuel amount entering the combustion chamber, and realize the low-speed fuel limiting and emergency stop functions of the diesel engine.

An electromechanical drum brake comprises two brake shoes (3, 4) intended to be in contact with a drum, at least one actuator (110) configured to abut the brake shoes (3, 4) against the drum, and an electric motor (22). The electric motor is arranged to activate the actuator (110), the actuator (110) comprising at least one movable element (18) after the actuator (110) is activated, the movable element (18) being movable between a braking position and a position beyond a release position, in which the brake shoes are no longer in contact with the drum. The actuator (110) comprises a stopper (126) which is arranged only in the actuator and when the movable element (18) is in a position beyond the release position, the movable element abuts against the stopper, and the motor powers the actuator until the movable element (18) abuts against the stopper (126).

The invention discloses a data reporting method of a photovoltaic cleaning robot, the photovoltaic cleaning robot and a system, and belongs to the technical field of robot communication. The data reporting method of the photovoltaic cleaning robot comprises the steps of determining a relay robot in a plurality of adjacent robots under the condition that a communication link with a server is detected to meet a triggering condition, and establishing a near field communication link with the relay robot; determining a relative position relation with the relay robot; based on the relative position relation, the motion state of the robot itself is adjusted, so that the robot itself moves along with the relay robot in the mobile operation environment, and the communication stability of a near field communication link is kept; and sending the to-be-reported data to the relay robot through the near field communication link, so that the relay robot uploads the to-be-reported data to a server. Through stable near field communication between the photovoltaic cleaning robots, the data of the photovoltaic cleaning robots can be timely and completely reported to the server.

The utility model discloses an easy-to-clean garbage can based on garbage classification. The easy-to-clean garbage can comprises a can body with an upper space and a lower space, a detachable lower liner is arranged in the lower space, and a lower door body for opening or closing the lower space is arranged at a space opening of the lower space; the lower door body is detachably arranged at the space opening of the lower space, so that the cleaning process of the lower space is simpler and more convenient, and the sight or hand action of a user is prevented from being blocked by the lower door body during cleaning; therefore, cleaning dead angles are not easy to occur, and omission is not easy to occur during garbage cleaning; the cleaning convenience and the cleaning effect are improved; meanwhile, the lower inner container is detachably arranged, so that the user can easily take out the lower inner container for garbage cleaning, the actions such as squatting and stooping can be avoided as much as possible or the duration time of the actions such as squatting and stooping can be shortened as much as possible in the cleaning process, the body burden during garbage cleaning is greatly reduced, and the use convenience is improved; and the user experience is enhanced.

Embodiments of the application disclose a virtual scene integral updating method and device, equipment and a storage medium, and belong to the technical field of virtual scenes. The method comprises the following steps: displaying a virtual scene picture; in response to a first virtual object being in an integral updating area and the first virtual object collecting a first virtual prop, acquiring occupation information of the integral updating area; in response to the occupation information indicating that the integral updating area is occupied by a camp to which the first virtual object belongs, acquiring an updating rate of camp integral of the camp to which the first virtual object belongs based on a first quantity of the first virtual prop collected by the first virtual object; the updating rate is positively correlated with the first quantity; and updating the camp integral based on the updating rate. The embodiments of the application can improve the rate at which each camp acquires camp integral, thereby reducing the duration of a single virtual scene, and further saving the power consumption and data flow of a terminal.

The invention discloses a pixel circuit and a driving method thereof and a display panel, the pixel circuit comprises a time control module, a potential control module and a first coupling unit, the first control end of the potential control module is connected with the output end of the time control module, and the second control end of the potential control module is connected with a first light-emitting control signal line; the first power supply module is used for responding to the potential of the output end of the time control module and a first light-emitting control signal on a first light-emitting control signal line and outputting first power supply voltage or second power supply voltage; the first coupling unit is connected between the output end of the potential control module and the control end of the time control module, and the first coupling unit is used for controlling the potential of the control end of the time control module according to the potential of the output end of the potential control module so as to control the potential of the output end of the time control module. According to the scheme, the phenomenon of display color cast or non-uniform display caused by closing delay when the pixel circuit is closed can be improved, and the display effect can be improved.

A method for removing a weft thread which has been introduced incorrectly on an air-jet weaving machine and a corresponding air-jet weaving machine are proposed, wherein a first drive device drives an opening mechanism and wherein a second drive device drives a sley (36) together with the guide bars (32). A control mechanism operates the first drive device and the second drive device such that they run synchronously with one another in a normal weaving operation. The method according to the invention comprises the following steps: detecting a weft thread which has been introduced incorrectly into the shed with at least one warp thread stop motion; cancelling the synchronization between the first and second drive devices by means of the control mechanism; operating the second drive device by means of the control mechanism such that the guide bars (32) assume a first swivel position which swivels away from the warp-weft thread interlacing point (66); operating the first drive device by means of the control mechanism such that the opening mechanism converts the shed into a first open position with a relatively small opening angle (a); removing the incorrectly introduced weft thread on the introduction side or the exit side; cutting off the incorrectly introduced weft thread on the introduction side; and removing the incorrectly introduced and cut-off weft thread.

Systems and methods for vehicle braking, collision, or braking collision simulation are provided. The system includes a seating platform configured to be secured within the vehicle such that the seating platform is located on or above a seat of the vehicle, a seat platform configured to controllably displace relative to the vehicle seat at least in a forward direction toward the front of the vehicle while the occupant is seated on the seat platform during a deceleration simulation including displacing the seat platform on which the occupant is seated from an initial position toward the front of the vehicle; one or more sensors configured to collect sensor data indicative of spatial characteristics of the occupant during the deceleration simulation, where at least one of the sensors is a sensor of the vehicle.

The invention discloses a charging device, and belongs to the technical field of electronic equipment. The charging device comprises a connector which is used for being connected to a power supply, the connector comprises a detection pin and a connection port, and the connection port is used for being connected with a transmission piece; the control circuit is arranged on the connector, and the control circuit is connected to the detection pin and the connection port; wherein under the condition that the connector is connected to a power supply, the control circuit is used for controlling the level state of the detection pin according to the connection state of the connection port and the transmission piece and the level state of the detection pin.

The present invention discloses a UAV charging system and method based on laser wireless energy transmission, including: a UAV system, a mission payload, and a laser wireless energy transmission system; wherein the laser wireless energy transmission system further includes a ground vehicle-mounted transmitting system and an airborne receiving system. The present invention uses a high-energy laser beam as an energy carrier, which is emitted through a collimated optical system, and converts light energy into electrical energy at the remote end using a laser battery array, thereby realizing non-contact power supply to remote electrical equipment, and is an effective means of long-distance wireless energy transmission. Using the laser wireless energy transmission method of the present invention to charge a UAV can provide a new energy supply method for the UAV, increase the flight time, and enhance the use value.

The invention belongs to the technical field of urban road network toughness research under traffic accidents, and particularly discloses a traffic police strength optimization scheduling method, which comprises the following steps of: establishing an MILP model according to a UR network in a patrol on-duty area of a traffic police support; and solving the MILP model by using CPLEX and a Yalmip library to obtain an optimal traffic police scheduling scheme, and completing traffic police force optimization scheduling. According to the method, the problem that the importance of traffic police in the aspect of processing traffic accidents is not considered in the existing research on improving the UR network toughness is solved, and the total scheduling cost is reduced to the maximum extent by realizing the optimal traffic police scheduling in the traffic accident period, and the duration of adverse effects caused by the accidents is shortened.

The present invention provides a relatively lightweight secondary ignition system by "replicating" the primary ignition system, providing ignition system redundancy when the primary ignition system fails. According to the system, the unmanned aerial vehicle can return to a base or land in a safe area, and greater loss is avoided. The invention provides an ignition system for a drone spark ignition engine, the ignition system comprising a primary ignition system providing a first spark energy and / or an ignition spark of a duration, and a secondary ignition system providing a second spark energy and / or an ignition spark of a duration, the secondary ignition system provides a second spark energy and / or an ignition spark of a duration in order to ignite the fuel-air mixture in the event that the primary ignition system is inoperative or partially operative, and the secondary ignition system provides an ignition spark of a second spark energy and / or duration in order to ignite the fuel-air mixture in the event that the primary ignition system is inoperative or partially operative. Wherein the second spark energy or duration is less than the respective first spark energy or duration.

This application discloses an information processing method, apparatus, device, and medium for insulin delivery control. The method includes: acquiring blood glucose monitoring data, insulin infusion data, patient model parameters, and meal declaration data; establishing a discrete state-space model of the patient; estimating the equivalent meal perturbation online using an augmented state estimator; calculating a meal correction factor and making an overall correction to the meal input sequence within the prediction domain of the model predictive control; solving the model predictive control optimization problem based on the corrected meal input sequence to obtain and output insulin infusion control data. This application solves the problem of how to estimate the equivalent meal perturbation online based on blood glucose feedback when there is a deviation in the meal declaration amount, and how to convert this single-step estimation result into meal input sequence correction information that can be used in the future prediction time domain. This application improves prediction accuracy, shortens the duration of postprandial hyperglycemia, and reduces the risk of hypoglycemia due to overcompensation.

Disclosed is a method of treating and / or preventing rotavirus infection and its associated symptoms in an infant or young child comprising administering a nutritional composition at least partially fermented by a lactic acid-producing bacterium and comprising a non-digestible oligosaccharide.

The utility model relates to a liquid injection transplanting jig of a lithium ion battery, and belongs to the field of liquid injection of lithium battery cells. The jig body is provided with a plurality of battery cell accommodating cavities, the sealing ring is arranged between the jig body and the end cover, and sealing ring accommodating grooves for mounting the sealing ring are formed in the peripheries of the battery cell accommodating cavities; a vent groove communicated with the cavity is formed in the wall of the battery cell accommodating cavity, and an inflation groove communicated with the vent groove is formed above the vent groove; and the inflating groove is communicated with the bottom of the sealing ring accommodating groove. According to the utility model, through the arrangement of the vent groove and the inflation groove, when the internal pressure of the external jig for the battery cell is very high, gas enters the inflation groove through the vent groove and applies upward pressure to the sealing ring covering the upper part of the inflation groove, so that the sealing ring is more tightly combined with the tool jig, and the air tightness of the cavity is higher; and the problem that the air tightness is reduced due to high air pressure in the cavity is solved.

The invention relates to a perception-driven random access method and system for a satellite-ground heterogeneous network, and the method comprises the steps: introducing active real-time perception in an initial stage of a user access process, and carrying out the shunting of users of which the channel quality is lower than a threshold value based on a dynamic decision threshold of real-time perception, therefore, the effective access load is controlled at a level which is lower than the nominal system load. Compared with the prior art, by actively sensing the channel state, users with poor channel conditions are effectively screened, and the beam search range is narrowed, so that the first access success rate and the system throughput are remarkably improved, the access delay is reduced, and the extra overhead is small.

The invention provides a control method for shortening transformer obstacle removal time. The method comprises the following steps: S1; non-electric quantity data of the transformer are acquired in real time through an acquisition device; the non-electric quantity data are uploaded to a measurement and control device; s2; and the measurement and control device compares the collected non-electric quantity data with a set non-electric quantity data threshold value, outputs a signal to a control ring main unit circuit breaker opening coil according to a comparison result to carry out an opening action, transmits the signal to a background EMS system, and notifies related personnel to carry out emergency treatment. A new transformer protection logic is designed, and the logic can effectively shorten the opening time of a ring main unit, reduce the duration of a fault on a transformer, and reduce the damage of the fault to the transformer. The non-electric-quantity fault of the transformer can be rapidly removed, and the fault tolerance time of the transformer is shortened.

The invention provides an application of aryl olefine acid schisandra chinensis phenolic ester (O-dihydroxyphenyl) hernandezine and a derivative thereof in preparation of a medicine for treating depression and an anti-depression medicine prepared from the O-dihydroxyphenyl hernandezine and the derivative of the O-dihydroxyphenyl hernandezine and the derivative of the O-dihydroxyphenyl hernandezine. The application dosage is 0.01-30 mg of aryl olefine acid schisandra phenolic ester or the derivative thereof per kilogram of body weight, and the anti-depression effect can be achieved within 60 minutes after administration. After the medicine is administrated for 5 days, a remarkable anti-depression effect can be generated at a high dosage. A research result shows that in a mammal mouse tail suspension experiment, the aryl olefine acid schisandra phenolic ester or the derivative thereof has a rapid anti-depression effect and is more effective than a conventional anti-depression drug fluoxetine. According to the invention, a forced swimming experiment and a mouse tail suspension experiment are adopted as drug screening experiments, and meanwhile, an open field test is carried out on the mouse, so that the autonomous activity of the mouse is detected, and the interference of central excitation drugs is avoided. The anti-depression drug has the advantages of being remarkable in anti-depression effect, quick in effect taking, small in dosage, small in side effect and the like, and is expected to become a new anti-depression drug which is quick, efficient and novel in mechanism.