30results about How to "Improve time characteristics" patented technology

The present invention discloses an advertisement playing method and device based on a broadcast and TV wireless live broadcast signal, wherein the method comprises the steps of continuously detecting whether the streaming media data is normal according to a preset first frequency; if the streaming media data is abnormal, continuously detecting the streaming media data according to a preset second frequency; if the streaming media data is normal, receiving and playing the streaming media data. According to the advertisement playing method and device based on the broadcast and TV wireless live broadcast signal of the present invention, by detecting the integrity of the streaming media after a broadcast and TV wireless emission live broadcast signal is carried out the format conversion, when a streaming media signal is abnormal, a player can switch to the video stored in the memory of the player automatically, and when the received signal is detected to be normal again, a live broadcast channel is switched back automatically after the playing of a local long video is ended, or the audiences can switch the player manually to a TV live broadcast channel when the playing of the complete long video is not finished.

The invention discloses an automatic expansion focusing electrode and an automatic expansion focusing electrode-based photomultiplier. The photomultiplier comprises a high-vacuum seal shell, the automatic expansion focusing electrode, a high-quantum efficiency photocathode, an electronic multiplier system and a connection and lead system, wherein the high-vacuum seal shell has main functions of sealing and being used as a substrate for other films as a photomultiplier housing part; and the automatic expansion focusing electrode comprises a bottom plate, expansion blades and an automatic trigger mechanism as an electronic collector of the photomultiplier. The high-quantum efficiency photocathode is located in an upper area of the high-vacuum seal shell and converts incident photons into electrons. The electronic multiplier system is located at the lower part of the automatic expansion focusing electrode, amplifies the electrons collected by the focusing electrode and then leads out the electrons through the lead system. The automatic expansion focusing electrode touches the trigger mechanism in a photomultiplier packaging process, so that an expansion action of the automatic expansion focusing electrode is achieved and expansion of the radial size of the focusing electrode is achieved.

The invention discloses a long-term and short-term memory network prediction method based on an attention mechanism and logistic regression. The method comprises the steps of obtaining the ethylene production data, performing normalization processing on the ethylene production data; arranging the ethylene production data after normalization; and training the arranged ethylene production data by using a long short-term memory network model, carrying out weighted calculation on results of a plurality of historical time points according to an attention mechanism to obtain the data dependency relationships of different time points, and fitting the ethylene production data by using nonlinear transformation based on logistic regression to obtain the final predicted output. According to the technical scheme provided by the invention, the time sequence characteristics of the ethylene production data can be improved, so that the performance of the long-term and short-term memory network model is improved, the accurate prediction of the ethylene production process is realized, the ethylene production capacity is improved, and the purposes of energy conservation and emission reduction are realized.

The invention discloses a modeling method of an aerial work platform base plate automatic levelling system. The method includes the following steps: analyzing and simulating the ground according to work conditions of an aerial work platform bottom plate; invoking various hydraulic components from a hydraulic component design (HCD) library of AMESim according to a hydraulic system schematic diagram, and constructing a hydraulic system model; according to operating characteristics of the base plate, invoking a step signal, a switch signal and proportional-integral-derivative (PID) control from asignal library of AMESim, using a pressure value of each support leg as input to a assign a value to a function signal, outputting the function signal to an electromagnetic valve to form a closed-loop control system, and evaluating and optimizing the levelling precision of the base plate so as to complete construction of a control model. The modeling method of the aerial work platform base plateautomatic levelling system improves the leveling precision and response speed of the hydraulic system, and reduces the modeling complexity.

The invention provides an electronic transformer calibrator traceability method and system. The method comprises the following steps: a digital multimeter collects analog signals and converts the analog signals into a digital message; an upper computer carries out virtual reconstruction on the digital messages and then carries out error information superposition to form a reconstructed message; a message controller carries out timing control according to the reconstructed message; a tested electronic transformer calibrator collects the analog signals and the reconstructed message sent by the message controller and generates error information; and a comparison is made between the error information generated by the tested electronic transformer calibrator and the error information superposed by the upper computer to obtain test errors. The sample data of the digital multimeter is subjected to virtual reconstruction to enable the output digital message to be same with the message output by an actual electronic transformer merging unit, and by comparing the error information generated by the tested electronic transformer calibrator and the error information superposed by the upper computer, the test errorsof the tested electronic transformer calibrator is obtained; and therefore, full traceability work is finished.

Methods and software for methods and software for placing and routing a signal path in an integrated circuit layout are disclosed. The signal path generally includes a plurality of cells and combinational paths having at least one net between said cells. The method includes determining whether an adjacent cell can be swapped with a selected cell (e.g., where the selected cell is one of the cells of the signal path and the adjacent cell is adjacent to the selected cell in the layout), determining whether a delay of the signal path decreases after swapping positions of the adjacent cell and the selected cell, and determining whether swapping the adjacent and selected cells causes a timing violation in another signal path of the layout. The present invention advantageously provides an automated method of improving the timing characteristics of poorly performing signal paths, without causing timing violations in other signal paths in the same integrated circuit.

The invention relates to a suction nozzle for a vacuum cleaner, comprising a housing (4), a suction chamber (6) arranged in the housing (4), a suction mouth (8) formed in the housing (4), at least onefirst limiting element (10), and at least one second limiting element (12), wherein the first limiting element (10) and the second limiting element (12) limit the suction mouth (8) for a floor to becleaned. The technical task of providing a suction nozzle which has good dust absorption values and low resistance to movement is achieved according to the invention in that at least one control means(20, 30) controls the first limiting element (10) and/or the second limiting element (12) to move during a suction process. The invention also relates to a method for operating a suction nozzle.

The present invention provides a double focusing electrode for a photomultiplier tube and a photomultiplier tube. The double focusing electrode comprises a bowl-shaped auto-expanding focusing electrode and a secondary focusing electrode. The bowl-shaped auto-expanding focusing electrode comprises an annular bottom plate and a rotating shaft, a curved blade, a torsion spring and a triggering devicearranged on the bottom plate. The secondary focusing electrode is an annular metal electrode fixed on the annular bottom plate. An insulating component is arranged between the secondary focusing electrode and the bottom plate for forming insulation between the secondary focusing electrode and the bowl-shaped focusing electrode composed by the curved blade. An electrical connection plate is further connected with the secondary focusing electrode. The electrical connection plate passes through the insulating component and the bottom plate, extends below the bottom plate to lead the secondary focusing electrode out and electrically connected with the lead system of the photomultiplier tube. Through the implementation of the present invention, the photoelectron collection and detection efficiency can be improved.

Techniques are disclosed for transmitting and receiving a user-specific transmission comprising user data symbols and user-specific reference signal symbols. According to one aspect, a method comprises transmitting, within a group of time-frequency resources scheduled in a first time interval for a first user, a plurality of demodulation reference signal (DMRS) symbols, where the plurality of DMRSsymbols within the group of time-frequency resources are more densely arranged in the frequency domain than in the time domain; and transmitting, within the group of time-frequency resources scheduled in the first time interval for the first user, a plurality of synchronization signal (SS) symbols, where the plurality of SS symbols within the group of time-frequency resources are more densely arranged in the time domain than in the frequency domain.

The invention relates to the field of biological recognition, and discloses a subtle expression recognition method. The method comprises the following steps of: performing optical flow processing on a to-be-detected facial expression video of a target person to obtain video processing data; performing spatial feature extraction on the video processing data to obtain a spatial vector set; performing time sequence feature extraction on the video processing data to obtain a time sequence vector set; carrying out fusion calculation on the space vector set and the time sequence vector set to obtain a space-time feature vector set; and performing subtle expression category analysis on the space-time feature vector set to obtain a subtle expression recognition result in the to-be-detected facial expression video. In addition, the invention also relates to a block chain technology, and the to-be-detected facial expression and the subtle expression recognition result thereof can be stored in a block chain. In addition, the invention also provides a subtle expression recognition device, electronic equipment and a storage medium. According to the subtle expression recognition method and device, the electronic equipment and the storage medium, the spatial features and the time sequence features of the subtle expression can be classified and analyzed at the same time, and the accuracy of subtle expression recognition is improved.

The invention provides an unsupervised driving style analysis method based on a basic driving operation event. The unsupervised driving style analysis method comprises the steps that data are acquired and preprocessed; extracting a basic driving operation event; performing feature construction and extraction on each event in the basic driving operation events to obtain event intensity features; event intensity clustering is carried out through k-means, and event intensity category labels are marked; obtaining a dynamic time window, and constructing a time-varying event curve which represents a driving style in the dynamic time window and has an event intensity category label; and based on a curve clustering algorithm fused with DTW, the curves of the dynamic time windows are clustered to obtain various time window curves, and driving style types are labeled. According to the method, a basic driving operation event is taken as a basic unit, event intensity and event transfer characteristics are considered, a change curve of the event along with time is taken as a characteristic for describing a driving style, dynamic decision information, data continuity and time characteristics of a driving behavior are reflected, original data information is reserved, and driving style analysis accuracy is improved.

The invention relates to the field of level-sensing devices, and discloses an array radiation level-sensing device and a measuring method thereof. An array type photoelectric conversion and multiplying part (2) consists of at least two micro-devices (5) which can independently accomplish photoelectric conversion and multiplying; scintillating crystals (1) are coupled to the array type photoelectric conversion and multiplying part (2); the array type photoelectric conversion and multiplying part (2) has at least one electric signal channel; the input end of an arithmetic processor (3) is connected to the electric signal channels; and the input end of an output part (4) is connected to the output end of the arithmetic processor (3). Compared with the prior art, the level-sensing device realizes the functions and performance that existing level-sensing devices cannot accomplish; the level-sensing device has extremely strong performance extensibility; the size of the level-sensing device can be greatly reduced; and the time characteristics, direction characteristics and spatial resolving power of the level-sensing device can be enhanced, the measuring ranges of single level-sensing device can be increased, so that the measuring can be more accurate and reliable.