38results about How to "Short duration" patented technology

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 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 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.

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.

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.

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 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 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.

The application provides a communication frequency selection method and system based on multi-factor heuristic adaptive scoring, which first initializes a candidate frequency point set and related parameters, and then collects channel state parameters of each frequency point in each decision time slot. After normalization processing, the collected parameters enter the EWMA history smoothing link to obtain more stable frequency point evaluation results. According to the current communication environment, corresponding weight configuration is selected, and the comprehensive heuristic score of each selected frequency point is calculated. If the SINR of the current working frequency point is lower than the set threshold or the packet loss rate is higher than the set threshold, the fast reselection mechanism is triggered to directly select the frequency point with the better score; if the fast reselection mechanism is not triggered, the regular hysteresis judgment is entered, and only when the selected frequency point has sufficient score advantage over the current frequency point and overcomes the switching cost, the frequency switching is performed, thereby improving the stability of the communication frequency selection.

The present invention provides a method and device for eliminating unstable noise, which is applicable to a recording device and processed by a codec. The unstable noise elimination method includes: starting the recording device to start recording; setting a suppression time and a cutoff frequency switching time according to the unstable noise and DC offset value of the recording device; processing the front audio of the recording with a filter having a first cutoff frequency, so that the unstable noise in the front audio converges quickly and outputs the front audio signal; suppressing the front audio signal according to the suppression time to eliminate the unstable noise; and adjusting the first cutoff frequency of the filter to a second cutoff frequency according to the cutoff frequency switching time, wherein the first cutoff frequency is greater than the second cutoff frequency.

A hybrid relay (1) comprises an electromechanical part (10) having a movable contact (103), a solid-state relay (11) and a control unit (2) for applying a drive signal (S', S") to a drivable coil (101) of the electromechanical part. A method for operating the hybrid relay comprises the steps of determining a first minimum voltage (V1) value of the drive signal, above which the movable contact (103) starts to move away from an open position (P o ); and a step of determining a second minimum voltage (V2) value of the drive signal, above which the movable contact (103) reaches a closed position (P c ); and a step of shaping the waveform (W) of the drive signal, the waveform comprising a portion (W1) consisting of a vertical segment jumping from zero to the first minimum voltage value, a portion (W2) in which the voltage gradually increases from the first minimum voltage value to the second minimum voltage value, and a portion (W3) consisting of a vertical segment jumping from the second minimum voltage value to the upper voltage boundary (V sup ) is composed of another vertical segment (W3).

The application relates to a resonant circuit starting method, a resonant converter and an energy storage system. The resonant circuit comprises a primary side and a secondary side. The method comprises the following steps: in a first soft starting stage, a primary side switch tube is controlled to continuously operate at an initial duty ratio until a capacitor voltage value of a bus capacitor on the secondary side rises to a first preset voltage value; in a second soft starting stage, the primary side switch tube is controlled to continuously operate at the initial duty ratio as a starting point and linearly increase at a first slope value until the capacitor voltage value rises to a second preset voltage value; and in a third soft starting stage, the primary side switch tube is controlled to continuously operate at a primary side duty ratio at the end of the second soft starting stage as a starting point and linearly increase at a second slope value until the capacitor voltage value rises to a third preset voltage value. The resonant circuit starting method can inhibit current stress of the primary side switch tube and shorten the duration of the early soft starting stage.

A method of forming a substituted or unsubstituted gamma-lactone, the method comprising forming a reaction mixture comprising a substituted or unsubstituted cyano (C4-C10) olefin and / or a hydrolysis reaction product thereof. The reaction mixture also includes an acid, a solid acid catalyst, or a combination thereof. The method comprises reacting the reaction mixture to form a substituted or unsubstituted gamma-lactone.

A method and system for measuring cable strain based on optical fiber stretching relates to the field of on-line monitoring of cables with optical fibers, and the method comprises the following steps: modulating a correlation sequence to a detection wavelength to form a detection optical signal, and sending the detection optical signal to an optical fiber line of a cable to be measured; receiving a reflected signal or a loopback signal in the optical fiber line, performing correlation operation on the reflected signal or the loopback signal and the correlation sequence, and determining the time delay of a correlation peak of the reflected signal or the loopback signal; according to the time delay of the reflection signal, determining the length of an optical fiber through which the optical signal passes from the transmitting end to each reflection point; or determining the optical fiber length of the optical fiber line from one end to the other end according to the time delay of the loopback signal; comparing the length of the optical fiber with a corresponding reference record to obtain the strain of the optical fiber; and obtaining the strain of the cable according to the corresponding relation between the strain of the optical fiber and the strain of the cable. According to the invention, the interference on the measurement result under temperature and dynamic conditions can be avoided, and the technical problem that the cable strain cannot be accurately measured in the prior art is solved.

The invention provides a method and system for predicting the possibility of individual epileptic seizure. Specifically, the present disclosure relates to an intracranial implant comprising one or more electrodes attached thereto, and an associated method of delivering an active perturbation pattern to a brain region, the method comprising: sending electrical stimulation to the brain through the intracranial implant, where the electrical stimulation is sent according to a stimulation pattern; measuring the output of the brain to the electrical stimulation; inputting the output into a prediction model; and detecting, through the prediction model, an output indicating a high likelihood of epileptic seizure. Based on detecting an output indicative of a high likelihood of a seizure, the intracranial implants and related methods may also prophylactically treat the brain through brain contact electrodes to prevent a seizure.

The invention discloses an SSPC integral protection circuit based on a high-speed operational amplifier. The SSPC integral protection circuit comprises a control circuit, a driving circuit, a power supply circuit, an acquisition circuit and an integral protection circuit, the input end of the control circuit is used for receiving an external control signal, and the output end of the control circuit is connected to the control end of the driving circuit; a power path of the driving circuit is connected in series in a load power supply loop, and a current sampling end of the driving circuit is connected to an input end of the acquisition circuit; the output end of the acquisition circuit is connected to the input end of the integral protection circuit; the protection action output end of the integral protection circuit is in feedback connection with the input end of the control circuit and is used for turning off the driving circuit when a fault occurs; and the power supply circuit provides a working power supply for each circuit module. According to the invention, the problem that the current SSPC power distribution equipment is not timely enough to deal with the load short circuit and the problem that the two states of capacitive load power-on and load short circuit cannot be distinguished are solved.

This application discloses an outdoor heat exchanger, an outdoor unit, and a heating, ventilation, and air conditioning (HVAC) system. The outdoor heat exchanger includes a manifold, a distributor, and a heat exchange body located between them. The manifold includes a main pipe extending along the height direction and multiple branch pipes. Multiple connection holes are spaced apart along the height direction on the wall of the main pipe; the connection holes at the lowest height are first-type connection holes, and those above the lowest height are second-type connection holes. The distributor includes a distribution body and multiple branch pipes connected to the distribution body. The heat exchange body includes multiple heat exchange flow paths arranged sequentially along the height direction. The lowest heat exchange flow path is a defrosting flow path, which connects to the second-type connection holes via a corresponding branch pipe. This outdoor heat exchanger prevents accumulated liquid at the bottom of the manifold from being pushed into the heat exchange body, thus preventing deterioration of the refrigerant side heat exchange and improving the energy efficiency of the HVAC system.

This application discloses a cooling water volume control method, device, medium, and electronic equipment. The method includes: if the previous slab is in a headless mode and the current slab is in a single-slab mode, then acquiring the first cooling water volume of each finishing mill in the headless mode; for each roughing mill, determining the current distance between the roughing mill and the finishing mill group; designating the roughing mill with the smallest current distance as the target roughing mill; for each finishing mill, in response to the bite signal of the target roughing mill on the current slab, acquiring the first no-load cooling water volume of the finishing mill, reducing the cooling water volume of the finishing mill from the first cooling water volume to the first no-load cooling water volume; in response to the bite signal of the finishing mill on the current slab, acquiring the second cooling water volume of the finishing mill in the single-slab mode, increasing the cooling water volume of the finishing mill from the first no-load cooling water volume to the second cooling water volume. This application provides sufficient cooling of the rolls, which is beneficial for controlling the shape of the single slab.

This invention relates to the field of intelligent distribution cabinet technology, specifically to an intelligent power grid distribution cabinet and its protection method with real-time monitoring and interlocking protection. The cabinet includes: a distribution cabinet body containing a circuit breaker and a disconnecting switch; an intelligent execution module installed on the circuit breaker; the disconnecting switch comprising: multiple sets of insulation groups, each set including two sets of insulating posts; a conductive arm group rotatably connected to one of the insulating posts; an elastic conductive component including two sets of elastic abutment structures and a clearance structure disposed between the two sets of elastic abutment structures; when the conductive arm group extends or retracts along its length, it can push the clearance structure aside and fit against the elastic abutment structure; and an energy storage structure with a trigger plate on a follower plate. The trigger plate cooperates with the energy storage structure to enable the energy storage structure to have a first state and a second state that are switched by being pulled, thereby driving the conductive arm group to move rapidly and shortening the time of arc generation and duration.

The present invention provides a method, device and server for processing edge programs, and relates to the field of communication technology. The method includes: a central server sends target information to at least one edge device in an edge device set; registers the edge device that successfully receives the target information into an edge device service list, the edge device service list is obtained based on the edge service list capacity, and the edge list service capacity is obtained based on the total number of edge devices in the edge device set, the edge service table capacity threshold, and the selection ratio of the edge device selected by the central server; controls the edge devices in the edge service list to send target information to edge devices in the edge device set that have not received the target information. The present invention reduces the workload of the central server, and later, with the continuous increase of edge devices, the time for issuing the entire edge program can be greatly shortened, and the update efficiency of the target information of the edge device is improved.

The invention relates to a method and a device for determining the dynamic tire circumference of a vehicle. The method comprises the following steps: receiving a first signal (S1) representing the yaw rate of the vehicle, a second signal (S2) representing the wheel speed of the wheel of the vehicle, a third signal (S3) representing the steering angle of the vehicle, and a fourth signal (S4) representing the dynamic wheel width of the vehicle; determining a first output signal (A1) of the first Kalman filter (K1) representing the dynamic tire circumference of the wheel by using the first signal (S1), the second signal (S2), the third signal (S3) and the fourth signal (S4) as input signals for the first Kalman filter (K1); and using the first output signal (A1) in a control device of the vehicle.

The invention provides a grid-connected and off-grid switching method, a control system and a split-phase energy storage inverter, the method is applied to the control system of the split-phase energy storage inverter, the split-phase energy storage inverter comprises a T-type three-level circuit, and an inductor and a grid side capacitor are connected in series between the output end of the T-type three-level circuit and a zero potential reference point; according to the method, in response to a mains supply off-grid action of the split-phase energy storage inverter, the T-type three-level circuit is turned off, and the voltage at the two ends of the grid-side capacitor rises to a high voltage threshold value; in response to determining that the voltage at the two ends of the grid-side capacitor rises to a high voltage threshold value, switching on a switching tube between the output end of the T-type three-level circuit and a zero potential reference point, and discharging the grid-side capacitor; and in response to determining that the voltages at the two ends of the grid-side capacitor are reduced to a low voltage threshold, controlling the split-phase energy storage inverter to be switched to an off-grid working condition, thereby reducing the duration of voltage rise of the grid-side capacitor and accelerating the speed of power grid detection.

Implementations described herein generally relate to generating modified selectable elements in an intelligent dictation session with an automated assistant that may be provided for presentation to a user. The modifying selectable element, when selected, may cause a transcription to be modified, the transcription including text data generated based on processing audio data capturing a spoken utterance and being automatically orchestrated. Transcription may be automatically orchestrated to include separation, punctuation, initial capitalization, indentation, segmentation, and / or other orchestration operations that the user does not specify when providing spoken utterances. Thus, subsequent selection of the modifying selectable elements may cause the auto-orchestration operations and / or text data located proximate to the auto-orchestration operations to be modified. Implementations described herein also relate to generating transcriptional and / or modifying selectable elements on behalf of a third-party software application.

This invention relates to a method for extrapolating transient measurements from a Gordon heat flux meter, comprising two main steps: pre-test calibration and post-test data processing. The pre-test calibration process uses laser or other means to test the heat flux meter and obtain key parameters such as the output coefficient and response time. The post-test data processing mainly includes steps such as data pre-pruning, data pre-fitting, data linearization, nonlinear point removal, data fitting, and steady-state heat flux prediction. By introducing this invention, steady-state heat flux parameters can be predicted even before the heat flux meter's output parameters have stabilized. This effectively solves the problem of large heat flux measurement errors caused by the extremely short working time and limited available data in thruster tests, which result in the heat flux meter not yet being balanced. Compared to other data extrapolation methods, this application fully considers the actual physical model of the heat flux meter and combines statistical methods to efficiently and with high confidence extrapolate the range of the true heat flux.

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.

This application relates to a polymer scintillation fiber drawing furnace, a drawing method, and a polymer scintillation fiber, belonging to the field of fiber optic fabrication technology. The polymer scintillation fiber drawing furnace of this application includes a furnace body and an infrared heating unit. The furnace body has a heating cavity inside, with an inlet and an outlet at each end communicating with the heating cavity. This allows a polymer scintillation fiber preform to be inserted through the inlet and the polymer scintillation fiber to be drawn out through the outlet. The infrared heating unit is located around the periphery of the heating cavity, enabling heating of a predetermined range of the polymer scintillation fiber preform from different peripheral positions. This reduces the decomposition of fluorescent dyes in the scintillation fiber, ensuring the sensitivity of the scintillation fiber in detecting high-energy radiation. This application also discloses a polymer scintillation fiber drawing method and a polymer scintillation fiber.

This invention discloses an automatic testing method for surge testing of axial compressors, comprising the following steps: First, the process data and predicted surge pressure of the axial compressor stator vane, corresponding exhaust pressure, are preset in the automatic testing system; then, the associated interlock protection logic of the axial compressor is deactivated in the automatic testing system, and the stator vane angle and anti-surge valve opening of the axial compressor are adjusted according to the surge test scheme; next, relevant data of the axial compressor are collected in real time through the automatic testing system; then, the collected data are processed by the automatic testing system to determine whether a surge state has been reached and to trigger a rapid protection action; finally, the relevant data are recorded and displayed in the surge test data table. The entire experimental process automatically completes a stable pressure build-up process, and can immediately release air and pressure at the moment of surge, shortening the duration of the surge phenomenon and reducing labor intensity.