39results about How to "Solve the delay" patented technology

The embodiment of the invention discloses a real-time video transmission method and apparatus. The method comprises the following steps: performing fragmentation processing on a real-time generated video encoding frame to form at least one video frame fragment; placing the video frame fragments into a sending buffer area in sequence; and forwarding the video frame fragments of the video encoding frame to a video playing terminal according to a set sending strategy via a video server in accordance with receiving confirmation response returned by the video playing terminal for different video frame fragments, in order to perform real-time video playing. By adoption of the technical solution of the invention, the video transmission delay can be shortened, the video transmission reliability can be improved, and the user experience can be improved.

The invention discloses a Web instant messaging method which comprises the steps of: a, sending an instant message to a server by a first user; b, forwarding the instant message to a second gateway registered by a second user if the second user registers the Web, or storing the instant message into a database in an off-line message way if the second user does not register the Web; c, returning the off-line message to a client end of the second user through the second gateway when the second user is changed into the register state from the non-register state, and accessing the second gateway by the client end of the second user to obtain the instant message when the second user is in the register state; and d, if getting the instant message, displaying the instant message to the second user, if not, returning to the step c until the second user leaves the Web. By updating the state information of the user state, the Web instant messaging method solves the problem of delay of managing the on-line state of the user, and greatly lowers the possibility of information loss and delay in processes of sending and receiving the message.

The invention provides a video monitoring data storage access system, which comprises a front-end acquisition system for acquiring image data containing pedestrians; a pedestrian recognition system used for recognizing pedestrian characteristics in the image data; an object storage system used for storing image data of pedestrians and pedestrian characteristics; a business application system connected with the object storage system and used for obtaining specified pedestrian information and a CDN by sending a request containing pedestrian characteristics to the object storage system, wherein the CDN comprises a plurality of edge nodes for receiving a user access request, so that specified pedestrian information required by a user is called from the object storage system and responds to theuser through the edge node closest to the user. The video monitoring data storage access system disclosed by the invention can support data storage and random expansion, and the phenomena of laggingand delay in a transmission process of image-text data sent to a user is solved.

The invention discloses a method and system for enabling a terminal to play DVB services. The method comprises the steps that a request of a playing channel is received through a DVB server, and the type of the playing channel is judged; if the playing channel is an audio and video program, audio and video data corresponding to the playing channel are filtered, demultiplexed and sectionally multiplexed and sent to the terminal to be played; if the playing channel is an image and text program, image and text data corresponding to the image and text program are downloaded, the home page address corresponding to the image and text program is sent to the terminal, and the terminal plays the image and text data according to the home page address. Thus, the terminal can play the DVB services such as television programs, image and text programs and webpages, is high in playing definition, has no delay, cannot be affected by telecommunication networks and brings great convenience.

The invention discloses a multi-data-source data acquisition method. The method comprises the steps of obtaining to-be-acquired data through a preset protocol; when the to-be-collected data is the data of the identification code device, scanning an identification code on the identification code device through a scanning device to obtain the to-be-collected data; when the to-be-collected data is inthe running state of the industrial equipment, obtaining the to-be-collected data through a sensor; when the to-be-collected data is the questionnaire data, obtaining the to-be-collected data througha mobile terminal; processing the to-be-collected data, and displaying the to-be-collected data through a display screen; and uploading the to-be-collected data to a cloud, so that the cloud sends the to-be-collected data to an upper computer. The invention also discloses a multi-data-source data acquisition device and a multi-data-source data acquisition system. By adopting the embodiment of theinvention, the data of a plurality of data sources can be automatically acquired, and the instantaneity, reliability and safety of equipment communication are ensured.

The micro-expression generation detection method comprises the following steps: 1) recording normal electroencephalogram data and normal facial video data of a testee before stimulating and inducing micro-expressions; 2) stimulating and inducing micro-expressions, and recording electroencephalogram data and facial video data; 3) marking timestamp data, and matching electroencephalogram time data with facial video time data; 4) obtaining the starting point time Tsm of the response of the electroencephalogram time data, and the starting and ending frames and the top frame of the facial expression change; and 5) judging whether the the micro-expression occurs or not. According to the method, the electroencephalogram signals and the facial image information are associated through the timestamps, the electroencephalogram signals and the facial video data are processed respectively, whether the micro-expressions occur or not is judged in combination with the processing result, and the accuracy of the judgment result is high.

The invention provides an implementation method of a hybrid routing protocol based on a time pulse source, belongs to the technical field of communication, and mainly solves the problem of how to balance network routing overhead and delay overhead and provide a high-capacity, low-delay and high-dynamic ad hoc network routing protocol for a system. According to the scheme, a routing protocol actively and periodically broadcasts pulse messages through pulse nodes to complete establishment and maintenance of a path tree, and when non-pulse nodes have data requirements, path establishment, maintenance and path optimization are completed along the path tree according to needs. The method has the advantages that the problems that the overhead is large and the method is not suitable for large-scale nodes due to the fact that the active routing protocol and the passive routing protocol adopt a flooding mode to carry out path discovery and path maintenance are better solved, the problem that the end-to-end delay of the passive routing protocol is large is solved, and the scheme is more suitable for the conditions that the network extension structure is rapidly changed and the network node scale is large.

The invention provides a method for predicting billet temperature distribution in a heating furnace based on a particle swarm optimization algorithm, which comprises the following steps of: establishing a one-dimensional unsteady-state heat conduction differential equation for representing a billet temperature distribution model in the heating furnace, and determining initial conditions and boundary conditions of the one-dimensional unsteady-state heat conduction differential equation; replacing a particle value in the particle swarm optimization algorithm with a random initial value of a boundary condition, and solving the one-dimensional unsteady state heat conduction differential equation to obtain a solving temperature value; taking a mean square error between a solved temperature value and a temperature measurement value as an objective function of a heat conduction inverse problem, taking the mean square error as a fitness value, returning the fitness value to a particle swarm optimization algorithm, sequentially carrying out inversion on boundary conditions according to a time sequence, and updating the boundary conditions based on the inversion; and calculating a heat conduction positive problem by using the updated boundary conditions, and outputting temperature values at specified moments and specified positions. The method can better solve the damping and delay problems of the unsteady state heat conduction differential equation, and is more suitable for solving the unsteady state heat conduction problem.

The invention discloses a switchable rapid interval barring gear device. A hydraulic barring gear and a manual barring gear are combined, the switchable rapid interval barring gear device is characterized in that switching of operation of the hydraulic barring gear and the manual barring gear is utilized, rotation of a ratchet wheel is achieved through only one barring gear hook, by means of a hook angle self-adjusting mechanism, the hook can be adjusted at a certain angle, and the possibility that the turning gear slips is avoided. According to the switchable rapid interval barring gear device, a double-oil-way rapid oil control system is arranged, so that the movement of a rod piece is controlled more autonomously and rapidly, multi-layer O-shaped sealing rings are sealed and improved into an integral sealing device, the oil carrying frequency is higher, uninstalling is more convenient, and dust prevention and pressure reduction are achieved.

The invention provides a player channel switching optimization method and system, a storage medium and a player. The player channel switching optimization method comprises the following steps: creating a single player object; calling a preset video stream parameter setting function to set parameter information of the video stream; and when it is analyzed that the first frame played by the video stream is an instant decoding refresh frame, outputting a starting instruction for starting a player so as to start the player to play the video stream. According to the player channel switching optimization method, the player channel switching optimization system, the storage medium and the player, the problem of delay frequently occurring when the player switches channels is solved, playing of anHLS video stream is obviously improved, a user does not have the delay feeling when switching the channels, and the use degree of the user is improved.

The invention discloses an information processing method, a client and a server. The information processing method comprises steps that, first type information sent by the server is received by the client at the first time; the first type information is randomly-formed information; at least one piece of second type information is obtained; the second type information is user-designated information; a matching degree between the second type information and the first type information is determined according to a preset mode, and the matching result is obtained; and third type information is formed according to the matching result.

The invention discloses a flexible direct-current transmission converter impedance analysis method and device and a storage medium. The method comprises the steps that a network voltage signal and three-phase voltage and current signals in a power grid are acquired; the network voltage signal and the three-phase voltage and current signals are input into a preset flexible direct-current convertercontrol circuit model, and three-phase voltage target signals are obtained, wherein the flexible direct-current converter control circuit model comprises a phase-locked loop control model, a rotational coordinate system model, an active power control model, a reactive power control model and a current inner loop control model; the three-phase voltage target signals are input into a preset equivalent delay control model, and equivalent delay three-phase voltage target signals are obtained; and according to the equivalent delay three-phase voltage target signals, an impedance model of a flexibledirect-current transmission converter is obtained. Therefore, the problem that in the prior art, the delay effect of a power electronic controller during signal processing in practical engineering isignored can be effectively solved, the accuracy of system stability analysis can be effectively improved, and an error can be effectively lowered.

The invention discloses an unmanned aerial vehicle countermeasure method. The unmanned aerial vehicle countermeasure method is applied to an unmanned aerial vehicle countermeasure system. The unmannedaerial vehicle countermeasure system includes area identifier units, unmanned aerial vehicle wing capture cameras, a countermeasure jet device, a targeting device, a microcomputer, unmanned aerial vehicle identifier units and an interaction unit, wherein the area identifier units communicate with the microprocessor separately. The area identifier units select a monitoring area and feed the monitoring area back to the microprocessor to generate a countermeasure area. The unmanned aerial vehicle wing capture cameras capture images of the countermeasure area in real time, whether an intruding unmanned aerial vehicle needs to be countered or not is identified by the unmanned aerial vehicle identifier units, and if the intruding unmanned aerial vehicle needs to be countered, the next step is performed; the unmanned aerial vehicle wing capture cameras identify wing positions and feed back identifiers of the wing positions to the targeting device; the targeting device generates a strike identifier and feeds the strike identifier back to the microprocessor; and the strike position is determined by the strike identifier, and the microprocessor drives the countermeasure jet device to strikequickly according to the strike position. Unmanned aerial vehicle wings can be quickly destroyed, and the problem of delay is solved.

The invention relates to the technical field of information display, in particular to a display screen handle integrating multiple communication functions, which comprises a cloud platform, a handle body, a first display screen and a second display screen, the first display screen and the second display screen are arranged on the handle body, and the first display screen and the second display screen are oppositely arranged on the handle body. An integrated circuit board, a communication module, an encryption module and an energy module are arranged in the handle body, the handle body is connected with the cloud platform through a network, multiple communication protocols are arranged in the communication module, and it can be guaranteed that the device is suitable for multiple scenes through the multiple communication protocols arranged in the communication module; the technical problem of information delay is solved.

An embodiment of the present invention provides a neural network operator that performs a plurality of processes for each of a plurality of layers of a neural network, including: a memory that includes a data-storing space storing a plurality of data for performing the plurality of processes and a synapse code-storing space storing a plurality of descriptors with respect to the plurality of processes; a memory-transmitting processor that obtains the plurality of descriptors and transmits the plurality of data to the neural network operator based on the plurality of descriptors; an embedded instruction processor that obtains the plurality of descriptors from the memory-transmitting processor, transmits a first data set in a first descriptor to the neural network operator based on the first descriptor corresponding to the first process among the plurality of processes, reads a second descriptor corresponding to a second process, which is a next operation of the first process, based on the first descriptor, and controls the memory-transmitting processor to transmit second data corresponding to the second descriptor to the neural network operator based on the second descriptor; and a synapse code generator that generates the plurality of descriptors, and thus it is possible to operate the neural network operator at high speed without interference of other devices, and it is possible to reduce the memory-storing space for the descriptors.

The invention discloses an engine control method and device, a storage medium and computer equipment, and the engine control method comprises the steps that the pressure deviation value of a manifold and the opening deviation value of an electric control pressure regulating valve are obtained; and the state of the engine is determined according to the preset interval where the pressure deviation value and the opening deviation value are located. The state of the engine is determined based on the preset interval where the pressure deviation value of the manifold and the opening deviation value of the electric control pressure regulating valve are located, different parameter threshold values are set according to different working conditions in the full working condition range, different levels of prompts are given, and therefore the state of the engine in the full working condition range is monitored.

The invention belongs to the technical field of big data systems, and particularly relates to a method and device for monitoring a state of a big data system, and the method comprises the following steps: 1, enabling a system to access big data, and collecting data information; 2, splitting the collected data information according to time points; 3, performing time point comparison according to the split data; 4, performing data correction on the compared information; 5, combining the corrected data, and then performing data delay elimination; and step 6, outputting the data of which the delayis eliminated to a system state monitoring system. Data splitting is carried out on collected data system state information; the split data are compared and corrected, and then the corrected data aresubstituted into the current time point to be synchronized and then output to the system state monitoring system, so that the delay effect of system state monitoring under big data is effectively solved, and loss caused by data updating errors is prevented.

The invention discloses a tumble detection method and device based on multi-sequential probability ratio test, and relates to the technical field of medical instruments. The device includes an upper limb force sensor and a lower limb ultrasonic sensor array, wherein an upper limb force signal passes through an identified admittance control model to obtain a speed response signal, the lower limb ultrasonic sensor array solves the real-time coordinates of user motion, then displacement is obtained and multi-sensor data fusion is conducted through a Kalman filtering algorithm; and finally, multi-sequential probability ratio-based test is performed on the fused data to determine whether the user falls down or not. According to the invention, the falling detection problem of the walking aid is solved, the data processing amount of a processor is reduced, and the oneness and delay of the SPRT (Sequential Probability Ratio Test) are solved by a multi-SRP algorithm, so that the detection speed is higher, and the use safety of the walking aid is improved.

The invention discloses a test method for the anti-theft system of a battery electric vehicle and belongs to the field of battery electric vehicle testing. The test method is executed by a testing device carrying a vehicle control unit. The test method comprises the following steps that: an anti-theft message sent by the vehicle control unit is received; verification operation is performed on theanti-theft message according to a preset anti-theft verification algorithm, so that a corresponding verification message is obtained; and message feedback is executed after delay compensation is performed, and the delay compensation is matched with the operation time consumption of the verification operation, the message feedback involves feeding back the verification message to the vehicle control unit. The embodiments of the invention provide a test device of the anti-theft system of the battery electric vehicle and a storage medium. With the test method and the test device adopted, the testefficiency of the test of the anti-theft system of the battery electric vehicle can be effectively improved, the false alarm rate of the test is reduced, and the credibility of a test result is improved.

The invention discloses a smoothing processing algorithm applied to locus touching, and relates to the touch control technology in the field of man-machine interaction. Exponential smoothing has obvious characteristics, effectively utilizes all historical data, and is simple in operation and easy to apply. Single exponential smoothing is a weighted prediction, neither all historical data or a group of data are needed to be stored, and accordingly the data storing problem can be solved to a great extent. To obtain better smoothness, second exponential smoothing is adopted in the method, a smoothing value is calculated twice on collected data, and a prediction model and a prediction method for a locus touching phenomenon are established on this basis. The second exponential smoothing firstly solves the problem that the single exponential smoothing cannot be applied to the prediction for data with an obvious trend change, and secondly overcomes the shortcoming that the single exponential smoothing can only predict a period of data. However, the second exponential smoothing cannot be applied to predict alone, and it is necessary that the second exponential smoothing is cooperated with the single exponential smoothing to establish a mathematical model of the prediction.

The invention provides an underwater blue-green light high-speed full-duplex communication-in-motion system and method, and solves the problems of large time delay, low communication rate, poor carrier maneuverability and adoption of a half-duplex communication mode in existing underwater wireless communication. The system comprises two communication devices which communicate with each other; each communication device comprises a transmitter and a receiver; the transmitter comprises a master control and information interaction unit, a modulation and driving unit, an optical signal transmitting array and a homogenizing mirror; the main control and information interaction unit processes the service data and outputs a square wave signal; the modulation and driving unit outputs N paths of excitation signals according to the square wave signal; the optical signal emission array comprises N laser diodes connected in parallel; the receiver comprises a wavelength selection unit, a bias voltage unit, a diversity reception and gating unit, a variable gain amplifier unit and an ADC circuit unit. Wherein the transmitter of one communication device outputs signal blue light, the transmitter of the other communication device outputs signal green light, and the receivers of the two communication devices receive signals output by each other.

The invention discloses a detection method and a detection device for the section morphology of an oil casing real object, and the method comprises the steps: controlling the laser emitted by a laser range finder to move around the end surface of the fracture of the oil casing real object in the circumferential direction in front of the end surface of the fracture of the oil casing real object, and measuring the distance from a laser emission point to the end surface of the fracture of the oil casing real object to obtain a distance set; shooting an image of the fracture end face of the oil casing real object by using image acquisition equipment in front of the fracture end face of the oil casing real object, and obtaining the width of the fracture end face of the oil casing real object according to the shot image of the fracture end face of the oil casing real object; and fitting according to the distance set and the width of the fracture end surface of the oil casing real object to obtain the shape of the fracture surface of the oil casing real object. When the method is used for detecting the section morphology of the oil casing real object, the analysis randomness and subjective errors of personnel can be effectively reduced.

The invention relates to a variable-pitch system for detecting a snow covering rate of fan blades. The variable-pitch system comprises a detecting sensor, a detecting signal emitting and receiving device, a data processing device and a control device, wherein the detecting sensor is used for detecting snow covering thickness of the fan blades, a fan blade temperature, environment wind power and awind direction, and comprises a snow covering thickness sensor and a temperature sensor, which are mounted on the fan blades, an environment air speed sensor which is mounted on a fan pole; the detecting signal emitting and receiving device is used for emitting a detecting signal to the detecting sensor and receiving a real-time data signal acquired by the detecting sensor; the data processing device is used for receiving the real-time data signal, processing the real-time data information to obtain fan blade snow covering rate; and the control device is used for performing pitch varying and yawing operation of the corresponding mode on the fan variable-pitch system and the yawing system according to the fan blade snow covering rate. The variable-pitch system can effectively improve fan operation efficiency, improves windy covered snow treatment ability, effectively avoids harm caused by icing of the fan, and protects the fan better.

The invention discloses a wireless interactive system of a pull type caravan. The system comprises a steering circuit, a sensor response module, a wireless transmission module and a light execution module, wherein the sensor response module comprises a pressure sensor, a current sensor and an engine rotating speed sensor; the input end of the pressure sensor is connected to a brake pedal through aspring; the input end of the current sensor is connected to the steering circuit; the wireless transmission module comprises a transmitting end and a receiving end; the output ends of the pressure sensor, the current sensor and the engine speed sensor are all in signal connection with the transmitting end, and the receiving end is simultaneously connected with a brake lamp, a left steering lamp and a right steering lamp. The system can realize synchronous work of the tractor and the caravan lamp, and is capable of quickly determining a fault area when the interaction system fails, thereby improving the detection and maintenance efficiency and effectively solving the safety problem in the aspect of light signal connection of the pull type caravan; and the system has a wide development prospect.

The invention provides an air guide mechanism and a cabinet air conditioner, and the air guide mechanism comprises a mounting seat which is used for being arranged on an air outlet frame; the driving assembly comprises a driving gear and a transmission part, the driving gear is rotatably arranged around the central axis of the driving gear and is connected with the transmission part, and the transmission part is rotatably arranged on the mounting seat; and the transmission part is connected with the air guide plate so as to drive the air guide plate to rotate. According to the air guide mechanism, gear transmission is adopted, and compared with connecting rod transmission in the prior art, the air guide mechanism solves the problem that in the prior art, a driving mode for driving the air guide plate to move of an air guide mechanism drives the air guide plate to move, so that time delay exists in movement of the air guide plate.

The invention relates to a hospital fan coil temperature trend judgment control method and device. The method comprises the steps that a first air temperature of a waiting area at a first time point is collected; when the first air temperature meets a first preset condition, a second air temperature of the waiting area at a second time point is collected; and when the second air temperature meets a second preset condition, a control signal is output to control an actuator so that the actuator can execute a corresponding function. According to the hospital fan coil temperature trend judgment control method and device, the state of the actuator can be controlled in advance by judging the temperature change trend of the waiting area of a fan coil in advance so that the flow of chilled water of the fan coil can be changed, and therefore the fluctuation of the air temperature change in an air conditioner area of the fan coil is reduced, the indoor thermal comfort can be guaranteed, frequent on-off of the executor can also be avoided, and the delay problem of an air conditioner when the whole air supplying cold amount changes is solved.