4060results about How to "Guaranteed smoothness" patented technology

The invention provides a desktop sharing method and a system. The system comprises a sharing terminal, a multimedia multi-point control unit, a viewing terminal and a control terminal, wherein, the sharing terminal is used for collecting desktop images and position and status information of a mouse, receiving operation events from the control terminal and replaying and displaying the events after processing; the multimedia multi-point control unit is used for forwarding the desktop images and the operation events; the viewing terminal is used for receiving the desktop images, and the position and status information of the mouse from the sharing terminal and replaying and displaying the information after decoding and decompression; and the control terminal is used for receiving the desktop images from the sharing terminal, replaying and displaying the information after decoding and decompression, simultaneously carrying out the operation on the desktop images transmitted by the sharing terminal and sending the operation event to the sharing terminal by MCU. The viewing terminal of the desktop sharing system can smoothly browse the remote desktop image and carry out the operation on the sharing terminal by the remote control terminal, truly reflects the operation events as the operation on the sharing terminal, and has excellent interaction effect.

The invention discloses a transitional tracking planning method applied by an industrial robot, which can realize the transition between a joint space track and a cartesian space track, and the transition between two tracks of the cartesian space, the transitional track between different movement tracks are planned under the cartesian space, and has an intuitive shape; by adopting the algorithm that two parabolas are fused into one transitional curve, the smoothness of the track, speed and acceleration can be ensured, and the curve shape is controllable; the transitional track is formed by six independent curves, and the transition can be realized on the track with only posture change without position change; from the engineering application angle, the path velocity of transitional track boundary is restrained by utilizing the included angle between the tracks and the system allowable chord error, the boundary posture rotation speed is restrained by the similar mode, so that the large impact on a mechanical system caused by overhigh engagement speed can be prevented.

The invention relates to a somatosensory interactive broadcasting guide system and method based on free viewpoints. The system comprises a server side, a video transmission network and a client side, wherein, the server side comprises a multi-camera system, a video processing server and a streaming media server which are used for completing multi-channel video capture, panoramic video synthesis, H.264 encoding and RTSP (real time streaming protocol) streaming media service; the video transmission network is a local area network (LAN) or wide area network (WAN) based on a TCP / IP (transmission control protocol / Internet protocol); and the client side comprises a free viewpoint playing terminal and a somatosensory sensor, wherein, the free viewpoint playing terminal comprises functional modules which are used for completing video streaming media receiving and decoding, gesture recognition based on a somatosensory controller, free viewpoint generation and other tasks. The somatosensory interactive broadcasting guide system and method have the beneficial effects that by combining multi-channel video into panoramic video, software and hardware investment and technical cost can be saved by directly utilizing the currently mature video coding and streaming media transmission technology, and meanwhile panoramic seamless roaming at 360 degrees and free viewpoint switchover can be really realized.

The traffic speed counting and matching method for road traffic includes: fetching position information of mobile terminals from collected traffic data information; when the position information of the mobile terminals is lost, according to the change information of the position information of the mobile terminals, dynamic predicting and obtaining the position and speed information of the mobile terminals by using follow-up arithmetic; matching the position and speed information of the mobile terminals onto a road network to generate road traffic speed information. The road traffic speed counting and matching system is also disclosed. The method and system can provide exact traffic condition information to traffic managers and going out people.

The invention relates to the field of agricultural product processing, particularly a three-time separating seed extractor for seed melons. The seed extractor comprises a machine body, a whole seed melon transfer device, a roller separating device, a vibrating separation device, a washing device, a fishing device and a transferring and drying device, wherein the whole seed melon transfer device is positioned on the right side of the machine body for transferring the whole melon to the machine body; the roller separating device is mounted on the right side in the machine body for primarily separating the seed melon; the vibrating separating device is mounted on the left side of the roller separating device for secondarily separating the seed melon; the washing device is mounted at the front end of the machine body for separating the seed melon for the third time; the fishing device is positioned on the right side of the washing device for fishing out separated seeds; and the transferring and drying device is positioned below the front end of the fishing device for drying and transferring the seeds. The seed extractor provided by the invention can be used for separating seeds from melon pulp and melon peel for seed melons, soaking the seeds by melon juice and drying the seeds.

Disclosed is a magnetorheological fluid speed bump. At least one rectangular channel is arranged in a direction perpendicular to the lane length direction on the entry side of a lane speed zone. A piston cylinder is disposed in each channel; a piston in the piston cylinder is provided with through holes; a spring is elastically compressed between the bottom wall of a cylinder block and the piston; the cylinder block is full of magnetorheological fluid below the piston; a solenoid coil is disposed around the magnetorheological fluid in a cavity of the channel; a piston rod at the top of the piston upwardly penetrates through the top of the cylinder block of the piston cylinder, and a speed bump is fixed at the top of the penetrating end; the speed bump covers an opening of the channel; the speed bump can horizontally move up and down in the channel. A speedometer is installed on the lane on the entry side of the speed bump and is in signal connection with an electric control unit. The rigidity of the speed bump is flexibly variable, rigid contact and stress between the speed bump and vehicles can be reduced within an allowable speed range, the vehicles and the speed bump are protected effectively, driving comfort is improved, and the speed of the vehicle exceeding the allowable speed range can be limited effectively.

The invention discloses a robot navigation positioning system and method, which are used for map construction, positioning and path planning of a robot. The method comprises the following steps: S100,positioning is carried out, in the positioning step, the robot detects surrounding environment information through multiple sensors, and later, based on an adaptive particle filtering SLAM algorithmand in match with different odometers, real-time map construction and positioning are completed; and S200, path planning is carried out, in the path planning step, a two-phase hybrid state A*-based path planning algorithm is adopted, after a path length and the number of extended nodes are obtained when path planning is carried out on a rasterized map, a higher rasterized map is obtained through parsing and extension, and the acquired path length and the acquired number of extended nodes are used as input of fuzzy reasoning, a heuristic weight is obtained through fuzzy reasoning and is used asinput of search of a second stage, and path planning is performed on a higher rasterized map. The system and the method disclosed in the invention can not only adapt to different environments but also can perform dynamic path planning.

The invention relates to an aircraft positioning method based on a positioning and sensing device. The method comprises the following steps: acquiring aircraft attitude information by virtue of an inertial sensor unit, collecting relative altitude information by utilizing an ultrasonic sensor, and acquiring real-time ground image information by utilizing a camera; acquiring relative displacement information of the aircraft by utilizing an improved optical flow method, and acquiring global position and attitude information of the aircraft by utilizing grid information; and realizing an accurate and robust aircraft positioning method by virtue of multi-sensor information fusion and acquisition by utilizing a filtering algorithm. Long-term accurate positioning of the aircraft can be realized in case of absence of GPS signals and any other external aided navigation, the robustness is high, and an accumulative error is avoided.

Disclosed are a high-grade privacy smart phone and a method for protecting private information of the high-grade privacy smart phone. The smart phone is composed of a radio frequency processor, a base-band processor, a first application processor, a second application processor, a display controller, a display module and the like. Wireless communication operation is carried out on the base-band processor. A first operating system in the first application processor is mainly used for processing multimedia application and the like with low privacy requirements. A second operating system in the second application processor is mainly used for processing personal issues with high privacy requirements. The first operating system and the second operating system are isolated from each other and form subsystems. Meanwhile, through hardware setting, third-party software can not be installed on the second operating system after the second operating system leaves a factory, or even, firmware upgrade can not be carried out, and therefore the second operating system becomes a closed system. According to the protection method, the first application processor and the second application processor which are independent of each other are used for processing the private personal issues and the multimedia application respectively.

The invention relates to a PC screen content sharing / interaction control method, specifically, relates to improvement of an existing method of PC screen content sharing. The PC screen content sharing / interaction control method comprises the following steps that: S1, a remote PC host assigns a window of which the content is required to be shared; S2, screen RGB data are obtained in a shared memory data buffer; S3, a software encoder is utilized to perform encoding and compression on data a YUV420 format so as to obtain H.264 video streams; S4, the screen content video streams which have been subjected to encoding and compression are uploaded to a stream media server through an RTMP protocol; S5, a user logs into a Webpage client address which releases media streams of the remote PC host through a browser; S6, control information is transmitted to the remote PC host through a TCP protocol; S7, the remote PC host parses received control information of a user end and displays the received control information on a PC screen; and S8, screen response effect is presented on a Webpage client which the client logs into. With the PC screen content sharing / interaction control method adopted, a user can directly browse the content of the screen through a Webpage browser, and remote interaction control protocols can be customized, and a lightweight system used for PC screen content sharing / interaction can be realized.

The invention relates to a method for generating a new video frame, and belongs to the technical field of video editing. An optical flow of former and latter video frames is used to estimate an optical flow from a newly generated intermediate frame to the former and latter video frames, and corresponding inverse interpolation is carried out on the former and latter frames according to an optical flow value to generate a new intermediate video frame. The new video frame is predicted from coarsely to finely by combining association between the former and latter frames with a multi-scale framework, and according to an experimental result, the intermediate video frame of higher quality is generated, the time continuity of a new video is maintained, am rapid and almost real-time processing effect is achieved, and compared with a traditional video frame inserting method, the method of the invention has higher application value and wider research meanings.

The invention discloses head-mounted virtual reality equipment. The head-mounted virtual reality equipment comprises an sealed casing formed by a front casing and a back casing, as well as a main board, a display screen, a display screen bracket and a visual range adjusting device which are positioned in the casing, wherein the main board is fixed on one surface, near the front casing, of the display screen bracket, and is used for processing content displayed by the display screen and transmitting the processed content to the display screen for displaying; the display screen is fixed on one surface, away from the front casing, of the display screen bracket, and is used for displaying processed display content transmitted by the main board; the visual range adjusting device is positioned between the back casing and the display screen bracket, and is used for adjusting the interval of the display screen and an optical lens. The display content is provided for the display screen through the main board, no external equipment needs to be connected, free and comfortable virtual environment can be provided, and wire harness interference can be ridded. Through the arrangement of balance shafts, the balance of the front casing and the back casing can be ensured, the smoothness of adjustment of the interval of the display screen and the optical lens by the visual range adjusting device can be ensured, and the comfort degree of a user can be improved.

The invention discloses a method for adjusting running speed of a robot in real time. Movement elements are analyzed through a demonstrating track, track planning and interpolation are carried out, and an interpolation command is corrected by inputted speed adjusting parameters to achieve the purpose of adjusting the speed in real time. According to the control command corrected by the method, a curve can be changed smoothly and continuously, so that stress on a mechanical system is not impacted or changed suddenly, a control effect is soft, and loss on moving parts is reduced. Meanwhile, the method is simple in control logic and small in calculated amount, and meets control requirements on instantaneity of a robot control system. When the speed is adjusted, only a standard process requires to be demonstrated according to actual working conditions, then a monitoring terminal is debugged to transmit different speed adjusting commands, a robot control system responds the received speed adjusting parameters so that the effect of changing the running speed of the robot can be achieved, work complexity of operators is greatly simplified, the field processing efficiency is improved, and standardized operation of the robot is facilitated.

The invention discloses a vehicle tracking method based on depth information. The method comprises clustering each frame of data by adoption of the method based on distance; extracting eigenvectors of targets inside clusters; initially judging whether the targets are vehicle targets according to the eigenvectors; tracking a single target by adoption of a kalman filter; realizing target association of the targets in a current frame through computing and a cost equation of the tracked target; and estimating the current state according to the current state when the targets being tracked are in leak detection state, continue tracking the targets when the targets are detected again so that coherence of tracking is maintained. The vehicle tracking method can track a new target appearing in a scanning environment and delete disappearing targets, namely, the number of the tracked targets changes along with actual conditions, and therefore the defect that only targets of definite number can be tracked when the joint probabilistic data association algorithm is adopted is overcome. Compared with the multiple hypothesis tracking algorithm, the vehicle tracking method is small both in calculated amount and memory overhead.

The invention discloses a line segment vacuating device for an electronic map and a method thereof. The device comprises a map lead-in module, a threshold value setting module, a vertical distance calculating module, an included angle calculating module and a line segment vacuating module. A straight line enabling a head point PS of a curve to be connected with a tail point PE of the curve serves as a datum line, the maximum vertical distance dm from other end points on the curve to the straight line PS-PE is calculated, the point with the maximum vertical distance is recorded as Pm, an included angle alpha formed by the vector PS-Pm and the vector Pm-PE is calculated out, compared the dm with the D, the a and the A, if dm<=D and a <=A, then only the head point PS and the tail point PE of the curve are retained, all other points are removed; if dm> D and a>A, then the Pm point separates the curve into two portions, vertical distance calculating, included angle calculating and line segment vacuating are repeatedly carried out on the two portions, until the dm>=D and a>=A. The line segment vacuating device can not only guarantee vacuating vigor and certain compression ratio, but also give consideration to vacuating deformation and guarantee smoothness of line segment after vacuating, and cannot enable original line forms to be excessively distorted.

The invention discloses a brake energy feedback control system of a pure electric automobile. The system in the invention combines electric brake and mechanical brake, wherein the electric brake is realized by controlling a motor to work in a generating state; and the mechanical brake is realized by an electronic brake system. An entire automobile control unit is a core control unit of the brake energy feedback control system; and the entire automobile control unit is used for calculating brake torque needed by the motor and the brake force needed by the electronic brake system, and respectively transmitting control commands to a motor controller control circuit and the electronic brake system. The brake energy feedback control system in the invention not only meets the brake requirements of the automobile under various work conditions, but also ensures the stability of the automobile during driving and the smoothness of automobile brake speed reduction; and furthermore, the system is capable of effectively recovering the brake energy and improving the use efficiency of the entire automobile energy.

The invention provides a geometry repair method for a damaged area of a complex curved surface part, belongs to the field of computer auxiliary design and manufacture, and relates to the repair method for a complex geometric curved surface with part damaged. According to the geometry repair method, by establishing the relation between actually-measured cross section data of the complex curved surface damaged part and a nominal geometry template curve of the complex curved surface damaged part, and utilizing an optimization method capable of achieving alternating iterative registration and free deformation, namely, alternating a quantity method to calculate the closest point from an actual measurement point to the template curve and solve of translation, rotation and deformation transformation matrices, geometric deviation between the template curve and actual measurement data of the damaged part is gradually decreased, the designed template curve and the measurement point can fit to the largest extent, therefore, a damaged cross section contour curve is reestablished, covering operation is performed on the cross section contour to generate the curved surface of the complex part, and the geometrical shape of the damaged area is effectively recovered. By means of the geometry repair method, the problem of large deviation between three-dimensional measurement data of the complex curved surface damaged parts and an original computer-aided design (CAD) model is solved, and accuracy and practical applicability of geometry repair are ensured.

The invention discloses a live program playing method, a terminal and a server. The method is used for supporting the terminal to obtain highly-aggregated aggregated information of network live programs according to the dimensions such as type and time from the server, providing a live aggregated application interface with rich contents for a user and meanwhile, guaranteeing the real-time performance and the smoothness of playing of the live programs. The method comprises the steps that the terminal issues a live aggregation request to the server to obtain the aggregated information of the network live programs, and the live aggregated application interface is generated according to the aggregation information, wherein the aggregation information of the network live programs is information obtained after the server conducts integration on the network live program information; according to a network channel selected by the user through the live aggregated application interface, the terminal obtains a radio and television channel corresponding to the selected network channel according to the radio and television channel and network channel mapping relationships which are established and stored in advance, the channel number corresponding to the radio and television channel is obtained according to a channel list stored in advance, and a live program corresponding to the channel number is received to be played.

The invention discloses a brake energy feedback control method of a pure electric automobile. The method comprises the following steps of: judging whether a brake signal exists, if so, judging whether an ABS (antilock braking system) works, and if the ABS works, enabling a brake force Fm of a motor to be 0, enabling the front axle brake force Ff and the rear axle brake force Fb to be controlled by the ABS; if the ABS dose not work, adjusting based on the fact whether the maximum brake force Fmax provided by the motor currently meets the brake threshold value F, the sliding rate threshold value S of the front axle wheels and other factors required by a driver; if no brake signal exits, judging whether the automobile is in a sliding state, if so, judging whether a current speed V is greater than the sliding speed threshold value V0, if V is greater than V0, controlling the motor to provide the brake force Fh needed by over-speed sliding of the automobile, and if V is less than or equal to V0, requiring no braking for the automobile; and repeating the steps till the driver steps on an acceleration pedal or the automobile stops moving, ending the brake. By the method in the invention, the use efficiency of the entire automobile energy can be increased.

The invention relates to the technical field of leveling systems, and discloses an automatic leveling system for a vehicle body platform. The automatic leveling system comprises a horizontality detection element, travel sensors and a programmable controller, wherein the horizontality detection element is arranged on the vehicle body platform; a lifting oil cylinder of a vehicle body platform hydraulic lifting system is divided into four groups according to areas in which four angles of the vehicle body platform are positioned; each group of lifting oil cylinder is provided with a travel sensor; and the programmable controller is connected with control valves of all the groups of lifting cylinders, the horizontality detection element and the travel sensors respectively. In the automatic leveling system, signals transmitted from the travel sensors and the horizontality detection element are subjected to operation processing through the programmable controller; when inclined, the vehiclebody platform can be appropriately leveled in time, so that the horizontality and the stability of the vehicle body platform are ensured, and vibration generated by overregulation is prevented; and various real-time regulation modes are provided, so that a driver can select the regulation modes as required according to actual road surface conditions. The system is simple, practical, safe and reliable, and has low cost and a wide application prospect.

A method for communication link for an access network device. The access network device comprises: a node server, an access switch, and a terminal. The method comprises: the node server requesting for a protocol packet on the basis of a service initiated by the source terminal; acquiring a piece of communication link information of the current service, and the communication link information comprises a piece of communication port information for the node server and the access switch involved in the current service; on the basis of the communication port information for the node server, the node server setting up within an internal data packet address table the port directed by the data packet of the current service; on the basis of the communication port information for the access switch, transmitting to the corresponding accessing switch a port configuration command; on the basis of the port configuration command, the accessing switch setting up the port directed by the data packet of the current service within an internal data packet address table. By means of the present invention, the stability of a transmission channel is ensured, thereby avoiding delays for multimedia services.

The invention discloses an automatic speed changer. The automatic speed changer comprises a gear range gear transmission system and a gear shift mechanism execution system and is characterized in that: the gear shift mechanism execution system comprises an operating control device, a reverse action device and a transmission shifting device; the reverse action device comprises a control frame, a driving frame, a driven frame and a spring; the driving frame is elastically connected with the driven frame through the spring; the driving frame and the driven frame are in axial slide fit with the control frame respectively; the slide stroke of the driving frame is larger than that of the driven frame, and the middle point of the slide stroke of driving frame and the middle point of the slide stroke of driven frame are on the same plane; the operating control device can make the driving frame move so as to force the driven frame to reversely move; and the driven frame is moved to make the transmission shifting device force the gear range gear transmission system to shift so as to change the speed. The automatic speed changer has the advantages of high transmission efficiency, variable gear ranges and long service life, can be assembled on various motor vehicles and agricultural machinery and can save power and fuel when used.

The present invention relates to an amorphous silica-based coating film with a low specific dielectric constant of 2.5 or below and the Young's modulus of 6.0 GPa or more and having excellent hydrophobic property, and to a method of forming the same. A liquid composition containing a silicon compound obtained by hydrolyzing tetraalkyl ortho silicate (TAOS) and specific alkoxysilane (AS) in the presence of tetraalkyl ammonium hydroxide (TAAOH) is prepared. The liquid composition is then applied on a substrate, heated and cured to obtain a coating film. The coating film obtained as described has a smooth surface and also has specific micropores therein.

The invention discloses a machining process of an axial-flow type turbine blade. The machining process of the axial-flow type turbine blade comprises the following steps that two side faces are machined on a square blank stock through an end face end mill on an ordinary milling machine through two process of rough milling and finish milling, another two side faces are machined with the two machined side faces as base planes, and then the two end faces are machined through the end face end mill; a steam outlet side face is machined on one side face through two process of rough milling and finish milling, the position, close to the steam outlet side face, of the blade root end face is marked as C, a face which forms an acute angle with the steam outlet side face and is adjacent to the steam outlet side face is marked as N and is the inner radial surface, and the other three side faces are machined to be a parallelogram through rough milling and finish milling; central holes are drilled in the blade root end face and the blade crown end face; the blade type is roughly milled through the end face end mill, the blade root is roughly milled, and finally the blade crown is roughly milled; then the blade is installed on a five-axis numerical control machining center for alignment and is machined in a finish mode; a process head at the blade root end face is roughly sawn through a sawing machine; the turbine blade is detected according to the requirements of a drawing.

The invention discloses a shooting action identification method based on human body skeleton map extraction and grouping motion diagram inquiry. The method includes the following steps: shooting action is acquired into database in advance and is grouped by class, each group constructs a motion diagram, all the actions are rendered into two-dimensional image under multi-angle and then key characteristic is extracted, and image characteristic value of each gesture is calculated. Accurate outline extraction is carried out on shooting picture sequence shot in operation when a person is shooting, characteristic value of skeleton map is calculated, the group in which the gesture most similar to the characteristic value thereof is located is found in database and is taken as a hit group, the group with the most hit in all the skeleton hit of the shooting action is found, then the node where the gesture the most similar to the characteristic value of each skeleton map on the motion diagram is located is found, the points are analyzed and repaired into a continuous section, and the continuous section is taken as action identification result. The invention can fast and accurately identify shooting action only by utilizing an image capturing device.

The invention relates to a comment method and device of application programs based on an Android platform. The method includes the steps that a comment opening instruction input by a user is received in an operating interface of the application programs; a package name of the application programs is acquired, and all comment information corresponding to the package name is acquired from a comment data base; comment conversation interfaces are drawn on the operating interface of the application programs; comment information input into a comment input window by the user is received; the package name and the comment information are submitted to a comment server; the comment information is displayed through a comment display window. By the adoption of the comment method and device, the user can directly conduct comment operation when the application programs are operated, and the comment device is convenient to use.

The invention provides an audio-video sharing method and system. According to the audio-video sharing method and system provided by the invention, a particular sharing transmission means is used; storage and sharing release processing works of audio-video data are completed through an FMS (Flash Media Server); acquired audio and video data after being subjected to encoding through a streaming medium are uploaded with an RTMP (Real Time Messaging Protocol) to the FMS by using an upload terminal; the uploaded audio and video data after being subjected to combination and encoding are released with the RTMP to a share user terminal by using the FMS so that the audio-video data upload and sharing release are simultaneously with real-time transmission performance and the real-time sharing of the audio-video data can be realized; the problem of occupation of the storage space of two-side terminals of the upload and the sharing is solved with the help of the RTMP so that a long time audio-video sharing of a mobile terminal is ensured to be possible; and the audio-video sharing method and system are combined with a sharing service, so that a user is convenient to timely request on the shared audio-video data at different times and places or on terminals, and the service application range is promoted to expand.

The invention relates to an automatic production line of a fuel cell stack. The automatic production line comprises a material taking and placing region, a stack lamination fastening region, a primaryperformance test region, an artificial assembly region, an artificial rework region, a part installation region, a secondary performance test region, a product off-line region, a manipulator and a control server, wherein the manipulator comprises a first manipulator, a second manipulator, a third manipulator, a fourth manipulator and a fifth manipulator, and the manipulators can slide along respective rails in a reciprocating way to take and place materials. In the automatic production line, a large part of production operation is completed by a mechanical program, high automation is achieved, modular and large-scale production of a fuel cell is easy to achieve, the continuity of production links is maintained, the production efficiency is substantially improved, the production cost is reduced, the automatic production line is suitable for producing different specifications of cell panels, is wide in application range and is flexible and simple to adjust, each production equipment isindependent, the production line is compact in layout, high in design flexibility, and compatibility, upgrading and transformation are easily achieved.

A wide-range of strategic traffic coordination control method relates to the traffic control management technical field, comprising the following steps: after a detector uploads the detected traffic data to a large-scale database, to extract the traffic data from the database and determine the traffic control state of the current region; to determine the traffic control state of the border of the region; to provide a corresponding strategic traffic control strategy and a regional border traffic coordination control strategy; to control a timing regulation amount scheme and send the scheme to a regional traffic signal control system and a regional traffic guidance system for execution. The invention realizes strategic traffic control and border coordination of a plurality of regions so as to better ensure the traffic flow smoothness and security among regions.