89results about How to "Avoid slowing down" patented technology

The invention provides a hot file access method in a distributed file system. The method is characterized in that: A. a master determines a hot file through collecting and calculating an accessed frequency of each accessed data block in unit time in the distributed file system and records position information of the hot file; B. a first client requests to obtain the hot file from the master and the master sends the hot file position information to the first client; C. the first client selects a second client as a target client according to the received hot file position information, creates connection with the target client, reads the hot file from the target client and caches in the local; D. the master updates the hot file position information, adds and stores the position information of the first client of the hot file in the hot file position information.

The invention provides an amphibious air cushion shipway point guidance control method, which comprises the following steps of (1) measuring current position information of an air cushion ship, heading of the ship, rotating rate and rolling attitude information; (2) combining a current position and a target position of the air cushion ship, and setting a way point;(3) calculating a guide point PLOS (xlos, ylos) of ship trajectory tracking through integrating a way point coordinate (xk, yk) and the current position (x(t), y(t)) of the air cushion ship by an LOS guidance system;(4) calculating an expected heading angle psi d according to the current position of the air cushion ship and a guide point coordinate, comparing the expected heading angle psi d with a current heading angle psi of the air cushion ship, and regarding a difference delta psi being equal to subtract psi d from psi as input of a PID controller; (5) controlling the air cushion ship to sail toward the guide point through the PID controller; (6) switching. According to the amphibious air cushion ship way point guidance control method provided by the invention, the ship trajectory control of the amphibious air cushion ship is realized, the work intensity and the mental burden of a driver can be reduced, and the stability and the safety in sailing of the amphibious air cushion ship are improved.

The invention discloses a broadcast sending method for sending a broadcast by an Android application or a system process. The method comprises: S1, whether a broadcast is sent is monitored; S2, if so, broadcast information is recorded; S3, according to the broadcast information, whether the current broadcast meets a preset sending condition is determined; and S4, if so, the broadcast is forwarded. With the method and apparatus, a sent broadcast can be determined and a broadcast meeting a preset condition can be forwarded, so that a needless broadcast can be shielded.

The invention discloses a detection method of driver fatigue driving status based on a micro-expression. The method includes the steps that a high-speed infrared camera in a vehicle is used to collecta driving state video of a driver, from which the face image information of the driver is obtained; preprocessing and feature extraction of the obtained image information are carried out, the micro-expression of the driver during the driving process is detected; the collected micro-expression of the driver is identified, the driving fatigue status of the driver is monitored based on the micro-expression, the fatigue status of the drivers or whether the driver is prone to driving fatigue or not, is pre-warned; pre-warning identification of the driving fatigue is achieved, it is avoided that aroad traffic accident is caused by a slow response, increased reaction time of the driver and even an occurrence of short sleep status to lose control to the vehicle due to deep fatigue driving.

The invention discloses a temporary obstacle handling method for laser slam navigation, which is applicable to the factory environment. The temporary obstacle handling method is characterized by comprising the steps of: S1, importing a positioned static map into an AGV, and using the static map as a background map of an alarm map; S2, displaying an occupied area and an expanded area of a fixed obstacle on the alarm map; S3, setting two-level alarm areas including a first-level alarm area and a second-level alarm area; S4, detecting an obstacle by means of a laser scanner, judging whether the obstacle is a fixed obstacle or a temporary obstacle based on the detection result, and displaying the temporary obstacle detected by the laser scanner on the alarm map; S5, detecting whether the AGV is positioned in a human-computer interaction area or an AGV exclusive area, carrying out no operation on the temporary obstacle when the AGV is positioned in the human-computer interaction area, and executing a step S6 when AGV is positioned in the AGV exclusive area; S6, and selectively performing speed reduction, stopping or running at an original speed by the AGV based on the judgment result ofthe step S4.

The invention relates to a ship anti-collision method. On the basis of active anti-collision detection, technical features of passive informing and active avoiding are added, relationship of positions and directions of ships is informed each one another, and the ship reporting alarm takes the initiative to avoid collision after acquiring warning message. With the method, the warning information is sent to the rear ships sequentially from the front ship and is sequentially transmitted backward from front in a passive informing manner, and the warning information can be received when the distance between the rear ship and the front ship is smaller than preset safe distance; when the warning information is received, output power of an engine is reduced to prevent a driver continuously controlling the ship ahead or assist an unresponsive driver to slow down.

The invention discloses a system, player client and method for realizing live video synchronization. The system comprises a live video source, a video server and a player client, the live video source is used for pushing a video stream to the video server; the video server is used for slicing the video stream and setting video serial numbers for sliced video segments according to a time sequence; the player client is used for keeping synchronization with the video serial numbers in the video server and downloading to-be-played video segments from the video server, determining a to-be-skipped target video segment according to the latest synchronized first serial number, the second video server of the latest downloaded video segment and the third video server of the played video segment at present, and skipping from the played video segment at present to the target video segment to continue the playing. The technical scheme provided by the invention can reduce the load of the video server, and ensure the instantaneity of the live video.

The invention relates to a multi-screen interaction method and a multi-screen interaction system. The multi-screen interaction method comprises the steps of: when a mobile terminal receives media data flow of an audio and video terminal, obtaining a preset continuous zone bit for each frame of media data flow; judging whether a current frame and the previous frame are continuous according to the continuous zone bit, and recording number of times of discontinuousness; if the number of times of discontinuousness reaches an upper limit, noticing the audio and video terminal which consequently empties the media data flow in own shared memory and is stored with new media data flow again. According to the method, the mobile terminal empties received media data flow, and receives new media data flow stored in the audio and video terminal again, namely previous media data flow is empted through the audio and video terminal and the mobile terminal, so that the mobile terminal does not receive incompletely decoded data, speed of the audio and video terminal for storing data into the shared memory is synchronous with speed of the mobile terminal for reading the data of the shared memory, and thus, data after blockage can go back to normal, and the problem about long time blockage of live telecast or a screen is finally overcome.

The invention provides design of a TCP transmission acceleration mechanism based on continuous packet losing congestion judgment. By means of analysis of characteristics of congestion packet losing and channel losing, a conclusion is deduced that congestion packet losing is usually provided with continuity. The number of lost packets is detected by a TCP SACK mechanism, a network congestion degree is determined by the number and a congestion window is correspondingly adjusted. In virtue of test verification under a simulating environment and a real network environment, it is found that the method improves data transmission rate and increases network throughput.

The invention discloses a metal porous membrane preparation method and device based on a laser shock wave effect. The device comprises a metal thin membrane, a vacuum cavity, hard micro particles, an absorbing layer, a restraint layer and a high energy pulse laser. The high energy pulse laser penetrates the restraint layer, and is interacted with the absorbing layer to generate plasma explosion; the restraint layer can restrain the explosion of plasma, prolongs the explosion time of the plasma and improves peak pressure generated by the explosion of the plasma; as the peak pressure generated by the explosion of plasma is extremely high and can reach a couple of GPa even dozens of GPa, so that the shock waves are formed; the shock waves penetrate the absorption layer and drive the hard micro particles placed at the back of the absorption layer; under the vacuum environment, the hard micro particles penetrate the metal thin membrane at extremely high speed, so that the metal porous membrane is formed. The method and the device can be applied to the preparation of metal porous membranes adopting any metal materials.

A memory circuit has a plurality of blocks which further comprises a plurality of regular sectors and a spare sector, wherein each sector further comprises a plurality of memory cells, and when a regular sector in a first block is defective, this defective regular sector is replaced with a spare sector in a second block. And responding to an address to be supplied, the regular sector corresponding to the supplied address in the first block and the spare selector in the second block are selected simultaneously during a first period, and after the first period, selection of one of the regular sector and the spare sector is maintained according to the result of redundancy judgment on whether the supply address matches with the redundant address. Regardless the result of redundancy judgment on whether the supplied address matches the redundant address indicating the defective sector, a regular sector in the first block and the spare sector in the second block, to be a pair thereof, are set to selected status simultaneously during the first period when access operation stars, so a drop in access speed due to a redundancy judgment operation can be suppressed.

A gear shift control system for vehicles is provided which mathematically calculates a rate of deceleration of the vehicle equipped an automatic transmission upon start of deceleration of the vehicle and inhibits the automatic transmission from upshifting or changes a permissible gear shift range of the automatic transmission as a function of the rate of deceleration of the vehicle, thereby ensuring a desired degree of braking force including an engine braking force while the vehicle is decelerating.

The invention provides a text similarity matching model compression method and system for knowledge distillation. The method comprises the following steps: obtaining training data; determining a firsttraining model by adopting a first deep text matching algorithm according to the training data; distilling the priori knowledge of the first training model into training data of a second training model, adopting a second deep text matching algorithm to determine the second training model, wherein the calculated amount of the first deep text matching algorithm is larger than that of the second deep text matching algorithm; and predicting a text similarity matching result by adopting the second training model. According to the method, a text matching method based on knowledge distillation is adopted, a calculation result of a large model is fused into a training process of a small model, when a second training model is adopted for online prediction, the operation speed is prevented from being reduced, meanwhile, a priori result of a first training large model is utilized, and the prediction accuracy can be improved.

The invention discloses a cloud-end navigation method which is actuated by a plurality of cloud-end navigation devices and a cloud-end navigation server. The method is used for obtaining a traffic sign state of at least one traffic sign. The method comprises the steps of firstly, loading electronic map data and a plurality of traffic sign points; then, getting a current position and picking up a monitored image to analyze whether the monitored image contains the traffic sign or not; if the monitored image contains the traffic sign, obtaining the corresponding traffic sign state, obtaining the corresponding traffic sign points according to the current position, and transmitting the traffic sign state and the traffic sign points to the cloud-end navigation server; finally, obtaining and displaying other traffic sign states by the cloud-end navigation device through the cloud-end navigation server.

The invention discloses a vehicle management device, a vehicle management server and a vehicle management system. The vehicle management device comprises: at least two first fixing devices and at least two second fixing devices, wherein the first fixing devices and the second fixing devices are sequentially fixed to at least one side of a lane in the extending direction of the lane, and the firstfixing devices are provided with structures allowing vehicles to pass through without barriers; a camera shooting device fixed to the second fixing devices and used for snapshot; laser radar fixed onthe first fixing devices and used for detecting a preset area of a lane and outputting point cloud data; a control device used for identifying the vehicle on the lane according to the point cloud data, and triggering the camera shooting device to acquire an image of the target monitoring area at least once when the vehicle enters the target monitoring area; a communication device which is in communication connection with the control device and is used for being in communication connection with a vehicle management server, wherein the communication device is used for transmitting the images andthe information of the camera shooting device to the vehicle management server. According to the technical scheme, real non-stop toll collection can be achieved.

The invention relates to a cloud management database establishment method and system for health behavior intervention, and the method comprises the following steps that a cloud processor carries out the preprocessing based on user data stored in units of behaviors, and generates a user attribute list stored in units of columns; the cloud processor generates an analysis database capable of screening and grouping the basic information of the user, a health behavior database about the health behavior of the user and an illness state database about the physical signs and symptoms of the user basedon the user attribute list; the cloud processor associates a knowledge base established by priori knowledge based on an analysis database so as to generate a first-level decision base with generality; and the first-level decision library generates a second-level decision library which can be pushed to at least one terminal and can perform personalized health behavior intervention based on the health behavior database and / or the illness state database, and the second-level decision library is stored in a behavior unit.

A pressure compensation valve that does not fully close at stroke end is used and a travel operation is performed, whereupon pilot primary pressure is reduced and supplied to the remote control valves (34c-34h) of a non-travel operation device. The inflow of pressure oil to a non-travel actuator in a travel composite operation is thereby suppressed, and a travel motor is ensured the necessary amount of pressure oil. When there is saturation in a composite operation such that there is a large difference between the load pressure of two actuators in the hydraulic drive device of a construction machine in which load sensing control is performed, the pressure compensation valve having the lower load pressure is thereby prevented from closing to prevent deceleration or stopping of the actuator having the lower load pressure, the actuator having the higher load pressure is ensured to have the necessary amount of pressure oil to prevent deceleration or stopping of the higher-load-pressure actuator, and satisfactory composite operability is achieved.

The invention relates to a hotspot sharing method based on artificial intelligence and feature analysis and a big data cloud platform, and aims to identify an access intrusion detection result of a target terminal before the target terminal is accessed to a hotspot network corresponding to a current hotspot sharing terminal, thereby ensuring information security relative to the current hotspot sharing terminal. In this way, the target terminal can pass the access verification before using the hotspot network corresponding to the current hotspot sharing terminal. The access intrusion detectionresult is determined based on the information security evaluation characteristics, and the access intrusion detection result can be identified for different information communication networks where different hotspot sharing requests are located, so that access verification can be accurately and reliably realized. Moreover, the access verification is carried out on the big data cloud platform side,so that a corresponding verification program does not need to be deployed in the current hotspot sharing terminal, and the operation rate of the current hotspot sharing terminal can be prevented frombeing severely slowed down.

The invention provides an etching apparatus and an etching method which can increase the etching rate. In a specified processing space(V) of a chamber(100), plasma is generated, and impulse voltages containing positive voltage are repeatedly applied to an electrod(a conductive separating component(3)), the electrode is supported in the chamber(100) by an insulating plate (an electrical insulation component) and is arranged in the processing space(V). Thus, ions of the plasma are accelerated and fly to a substrate(S) which acts as a processing object from an opening part of the processing space (V). Thus, the etching rate is increased by the collision of the accelerated ions and the main surface(S1)of the substrate (S).

The invention relates to a device for producing a predetermined orientation of workpiece that are transported individually on a sliding surface by means of an air current that acts on said workpiece. Said air current has an active direction, which is inclined in relation to a displacement direction of the workpiece in such a way that an air current, which runs perpendicular to the displacement direction of the workpiece, is created as a result of the active air current and the air current produced by the displacement of the workpiece. The perpendicular action of the resultant air current on the workpiece achieves optimal force relationships on the workpiece, ensuring a reliable orientation of the workpiece

The invention relates to a yarn winding device. The magnitude of the braking force acting on the package can be changed at any moment during the deceleration process of the package. A winding unit includes a braking device that includes a braking shoe that brakes a package, a chamber that operates the braking shoe, and an air pressure changing section that changes a pressure of fluid supplied to the chamber. The air pressure changing section includes a first solenoid valve arranged between a supply port and the chamber, a second solenoid valve arranged between the chamber and an exhaust port,and an air pressure controlling section that opens and closes the solenoid valves independently. When the first solenoid valve is opened and the second solenoid valve is closed, the pressure of the fluid supplied to the chamber increases. When the first solenoid valve is closed and the second solenoid valve is opened, the pressure decreases. The pressure can be maintained at a constant value by closing both the solenoid valves. Accordingly, the pressure can be adjusted at any moment, and the magnitude of the braking force acting on the package can be changed at any moment.

The invention discloses a parallel type double-cavity oil well pump, which comprises an upper pump barrel, a lower pump barrel and an outer tube; the upper and lower ends of the outer tube are respectively connected with the upper pump barrel and the lower pump barrel by virtue of couplings; the outer tube is internally provided with a small plunger; the upper end of the small plunger is connected with an upper plunger positioned in the upper pump barrel; the lower end of the small plunger is connected with a lower plunger positioned in the lower pump barrel; an annular hollow space is formed between the outer wall of the small plunger and the inner wall of the outer tube, and is internally provided with a small pump barrel; the small pump barrel divides the annular hollow space into two cavities. The parallel type double-cavity oil well pump disclosed by the invention solves the problems that a conventional rod pump cannot be used for large-discharge lifting in a 51 / 2in casing pipe, and the cost is high and energy consumption is large when an electric pump is used for lifting. The parallel type double-cavity oil well pump has the advantages of less input, low energy consumption, low maintenance cost and the like; most of electric pumps can be replaced with the parallel type double-cavity oil well pump, and the parallel type double-cavity oil well pump has great significance for realizing economical and efficient exploitation of high-water-content high-liquid-production-capacity oil wells.

The invention discloses a device of improving a coiling folding mark of a stainless steel cold annealing and pickling line. The device is characterized in that an auxiliary support which is L-shaped is fixed to an outlet pinch roll support; one end of the auxiliary support is connected and fixed to the outlet pinch roll support and the other end of the auxiliary support is the free end; a corrugated paper roll sleeves a cross rod where the free end of the auxiliary support is located; and the axial direction of the corrugated paper roll is parallel to the axial direction of a coiler mandrel. The use method of the device comprises the following steps: the corrugated paper roll sleeves the auxiliary support, during corrugated paper packing operation, a paper head of the corrugated paper roll is led into space between strip steel and the coiler mandrel, and when the coiler mandrel rotates, corrugated paper packing is completed. The device and method have the following beneficial effects: with the adoption of the device, the corrugated paper packing efficiency can be improved substantially and production line speed reduction in a paper packing process is avoided; and by using the technological improvement, the dependence on manual operation can be reduced in an operation process, and injuries to personnel due to the fact that the personnel are required to stand behind a rotating coiler to operate when an area is narrow can be avoided.

The invention provides an anti-blocking pipe-supporting base of an atomizer. The anti-blocking pipe-supporting base comprises a rack (1), wherein the rack (1) adopts the design of a contractible structure, lifting type support rod devices (2) are arranged on two sides of the rack, the height of the lifting type support rod devices is located by adopting a rotation nut (3), and a screw type pipe-supporting device (4) and an airflow induction coil (5) are arranged in the middle of a rod body. When the anti-blocking pipe-supporting base is used, an atomizer pipeline passes through a guiding hole device (6) and then is spirally located and extends to a clamp device (7), an operator adjusts the corresponding distance according to the length of the pipe body, and the warning information is sent out when the airflow induction is blocked; the rack (1) is provided with a warning device (8), and the information prompting manner is voice or LED lamplight display. The anti-blocking pipe-supporting base is simple in appearance structural design and convenient to store, the locating treatment is realized effectively aiming at the pipeline structure of the atomizer, meanwhile, the anti-blocking pipe-supporting base has the intelligent monitoring function, so that the efficacy retarding caused by transportation blockage is avoided, and thus the anti-blocking pipe-supporting base is economical and practical.

The invention discloses an anti-overspeed dust collection deceleration strip which comprises an installation block and a capacitor. The installation block is buried in the ground, the installation block is slidably connected with a sliding block through a sliding groove, the sliding block is sleeved with a plurality of sliding columns in sealed and sliding manners through first liquid cavities, and a plurality of second liquid cavities are formed in the sliding block; a plurality of communicating cavities are formed in the sliding block, the communicating cavities communicate with the corresponding first liquid cavities and second liquid cavities, magnetic plates are slidably sleeved with the second liquid cavities in a sealed manner, electromagnets are glued to the inner top wall of the sliding block and located at the second liquid cavities, and spaces between the magnetic plates and the sliding columns are filled with hydraulic oil; and deceleration strip bodies are welded to the upper surfaces of the sliding columns. The anti-overspeed dust collection deceleration strip has the advantages that vehicles can be effectively prevented from passing through the deceleration strip inan overspeed manner, so that the public traffic safety is greatly improved; and meanwhile, flying dust generated after the vehicles pass through the deceleration strip can be absorbed, the surroundingenvironment is prevented from being polluted by the flying dust, and a better warning effect is achieved at night.

A motor control method and device, a motor device and a storage medium wherein a motor has no position sensor. The method comprises: acquiring a current electrical angular velocity of the motor by acquiring a current voltage of the motor before starting the motor (S101); if the electrical angular velocity is greater than or equal to a first preset threshold value, taking the electrical angular velocity as a feedback signal, and performing closed-loop control on the motor to start the motor; wherein the first preset threshold value is greater than zero (S102). According to the scheme, the accuracy and reliability of motor control are improved, and the safety of equipment is further improved.

An EGR apparatus for an engine includes an EGR passage, an EGR valve, an accelerator sensor, and an ECU. The ECU compares a change amount (accelerator operating speed) per unit of time of an accelerator opening degree to a predetermined first determination value. When it is determined that a request for deceleration operation or acceleration operation is made to an engine, the ECU issues a fully closing command to the EGR valve. When it is determined that the deceleration or acceleration operation request is continued, the ECU continues to issue the fully closing command. When the deceleration or acceleration operation request is removed and the accelerator opening degree is larger or smaller than a predetermined second determination value, the ECU releases the fully closing command.