1107results about How to "Guaranteed real-time" patented technology

The invention provides a dynamic flow dispatch method and system based on a software definition network. The method comprises a step of carrying out deep analysis of flow through flow information uploaded by a switch, and classifying flow types by a flow identification and grading module according to priorities, a step of calling a statistic management module to obtain information of switch ports, calculating joint links of the switch, and sending information of the joint links to a topology management module, a step of calling the topology management module to obtain a feasible path for flow direction and calculating real-time sate statistic information of the feasible path, and a step of analyzing features of the joint links to calculate weight of the joint links in the overall selection, working out the optimal dispatch strategy based on the weight and giving out the optimal dispatch strategy. The invention can achieve the optimal real-time dispatch of network flow, so that flow is enabled to reach a destination in a fastest manner, and purposes of improving the bandwidth utilization rate and optimizing network performances are finally realized.

The invention provides a method for inland river bridge zone shipborne sailing active collision prevention. The method comprises the steps of collecting hydrological information, meteorological information and ship information of nearby ships and the ship, automatically updating river map information on line, and performing data storage; forecasting tracks of the ship and other ships according to obtained track information of the ship and other ships by combination with the real-time hydrological information and the meteorological information, and obtaining track information of every ship; calculating the nearest meeting distance and the nearest meeting time of the ship and a target object according to the obtained track information; and giving collision accident pre-warning and active collision prevention suggestions according to the nearest meeting distance and the nearest meeting time of the ship and the target object. According to the method, by predicating ship sailing situations, the shortcoming that an existing ship assistance navigation device cannot accurately obtain the position of the target object, and the nearest meeting distance and the reaching of the nearest meeting distance cannot be pre-judged more accurately is overcome.

The invention relates the auto sorting faulty goods method on the high-speed automatic production line and unit. The method comprises the following steps: sorting faulty goods system receiving the sorting signal, starting the freedom degree linked conveying device 3, then positioning the mechanical arm connected with 3 on the faulty goods, the mechanical arm keeping the same speed with conveyer belt, gripping the faulty goods, lifting it and releasing it to appointed position. The unit comprises electrical control and mechanical part. The mechanical part comprises 3 and mechanical arm which comprises arm and hand. In the center of the mechanical hand there is camera, and the electrical control is connected with 3 and mechanical arm. The invention possesses high accuracy, low cost, good versatility, and no environmental pollution.

The invention discloses an embedded real-time emulation and fault simulation system based on multiple data buses, comprising upper computer simulation management software and an embedded real-time emulation and fault simulation device. The upper computer simulation management software guides the user to perform emulation configuration and fault setting aiming at a fault-tolerant control system to be tested through a human-computer interface, and generates fault emulation data of multiple redundancy equipment. The embedded real-time emulation and fault simulation device outputs the fault emulation data in real-time and synchronously through the multiple data buses, simulates the fault of the multiple redundancy equipment and outputs the fault data stream. The upper computer and a lower computer communicate mutually through an Ethernet to achieve the downloading of the information configuration, the fault emulation data and the emulation control command of the upper computer, and the uploading of the working condition of the lower computer. The invention overcomes the defects of poor universality and lower synchronous precision of the traditional multiple equipment fault simulation device based on the emulation, and is suitable for the test and the verification of the different redundancy fault-tolerant designs of the complex spacecraft system with numerous equipment and frequent data exchange.

The invention relates to a trajectory tracking control method and a control device for a driverless vehicle. The control method comprises that error of present driving trajectory and a reference trajectory of a vehicle is calculated by a data preprocessor, a target performance indicator function which is corresponding to the present driving model is obtained simultaneously; an upper layer controller predicts driving states of the vehicle over a period of time through a vehicle dynamics model; transition switch is conducted to function parameters according to switching control algorithm, and a performance indicator function at present sampling time is obtained; optimal controlled quantity of present time is calculated by considering performance requirement constraint conditions at the same time according to predicted driving states and the performance indicator function; a lower layer controller calculates throttle opening, braking pedal pressure and steering wheel turning angle according to the optimal controlled quantity; and the control device comprises the data preprocessor, the upper layer controller and the lower layer controller. Compared with the prior art, the trajectory tracking control method and the control device for the driverless vehicle have the advantages of being good in control effect, high in practicability, capable of improving stability and safety of vehicles and the like.

The invention relates to an on-line management method for engineering project bidding, tendering and bid evaluation. According to the method, based on a remote interaction platform, through data transmission and data processing between a contracting enterprise end computer device, a checking end computer device and a server end computer system, and through the steps of applying for contracting enterprise registration, applying for the bidding, setting a bidding marking sheet, uploading tendering documents, calculating a total bid evaluation score according to marking standards of the bidding marking sheet, generating a bid evaluation report and a pre-determining report form and sending a bid-winning notice to a bid-winning contracting enterprise, on-line management for the engineering project bidding, tendering and bid evaluation is achieved, and effective support is supplied to bidding and tendering work of large-scale enterprises.

An apparatus comprising a first circuit, a second circuit and an output circuit. The first circuit may be configured to generate (i) one of a first set of entropy coded input signals or a second set of entropy coded input signals and (ii) a data path signal. The second circuit may be configured to generate (i) a first set of entropy encoded output signals in response to decoding the second set of entropy coded input signals, or (ii) a second set of entropy coded output signals in response to decoding the first set of entropy coded input signals. The second circuit may provide real time decoding and encoding on a macroblock basis. The output circuit may be configured to present an output signal in response to (i) one of the first set of entropy coded output signals or the second set of entropy coded output signals and (ii) the data path signal.

The invention discloses a data migration method and device used for a database. One specific implementation way of the method comprises the following steps: establishing the mirror image of a source database, migrating total-amount data in the mirror image into a target database, and detecting incremental data in the source database; migrating the detected incremental data to the target database; and when all the incremental data in the source database is migrated to the target database, switching the read and write operation of the database to the target database from the source database. The implementation way realizes on-line data migration between the databases.

The invention discloses a visual locating system of spherical robot and a visual locating method thereof. The visual locating system is composed of a binocular visual system, a one-dimensional gyroscope, a spherical robot body, a core control system and a wireless communication module. The locating system carries out locating through cooperation of a camera and the gyroscope, and a locating algorithm is realized on line in the core control system. Data for locating are subjected to remote transmission through the wireless communication module. And a use can realize remote real time monitoring of a robot position. The locating method comprises: conducting real-time acquisition of left and right image sequences by a binocular camera, calculating the posture and location changes of the spherical robot by a binocular visual mileage calculation method, compensating a feature locating error caused by an unstable spherical robot platform through the gyroscope, and finally performing state updating by a Kalman filtering method. The whole process iterates continuously so as to realize real time calculation of the posture and location of a robot.

The invention requests to protect a micro-embedded type real-time task scheduler and a scheduling method, relating to the industrial control and intelligent instrument related field. When the scheduling method of the invention is used in scheduling process, the status of a task is marked through the set of a task status word in a task control block; the scheduler determines the scheduling of the task and drives the scheduling through a clock and an event; real-time request is realized by adopting a mode of combining a simplified kernel code, a deprivable kernel and interrupt; a multipurpose mode of adopting a status word to realize ready, suspension and time delay counting reduces task execution codes, simplifies scheduling algorithm and reduces kernel codes; a scheduling lock mark is added to the task control block, and users can lock or unlock in the task according to specific needs. The scheduler solves the problems existing in the prior programming mode of middle-low grade intelligent instruments and meters, meets the requirements on real-time performance, low power consumption and small kernel, and improves programming efficiency as well as code portability.

This invention relates to the obtaining method of a kind of space non-cooperation objects three dimensional information, belong to digital image processing. This invention is designed to observe the close-range approaching course of star and space non-cooperation objects, order include:(1) processing procedure of closer object estimate, from object distance 200m to 100m, (2) processing procedure of exceed closer object estimate, and object distance 100m to 5m;(3) Processing procedure of terrible closer object estimate, and object distance 5m to 0m. Along the successive approximation of star and space object, estimated accuracy of each handle parameter increasing, error drop off, reliability increasing, real-time character and accuracy all get guarantee; Can be use for independence image guide when slowly move to object that possess polyhedron character under unknown environment.

The invention belongs to the technical field of intelligent transportation, and relates to a front vehicle detection method based on monocular vision, which comprises the steps of: acquiring a vehicle front road condition original image, capturing a subimage, carrying out histogram equalization on the subimage, extracting a vehicle front road surface average gray threshold; obtaining a gray threshold by adopting an improved OTSU method; calculating a binarization threshold; estimating a binarization result, segmenting and reinforcing a target according to an estimation result; filtering; obtaining a key position line expressing a bottommost line in a vehicle bottom shadow, carrying out line fusion on the key position line, then extracting target information of an image to be used as a target result of a current frame; and matching the target result of the current frame with a target result of the last frame and information of a tracking target result, and carrying out classifying decision on the target result of the current frame according to a matching result, and determining a final detection result of a front vehicle of the current frame. The front vehicle detection method has the characteristics of good instantaneity, high detection accuracy rate and good robustness.

The invention provides an integrated navigation computer based on DSP and FPGA and used for integrated navigation of GPS and an inertial navigation system, consisting of a data input module, a data collecting module, a navigation solution module and a data output module. The data input module realizes the level conversion of input signals; the data collecting module utilizes the FPGA to realize the synchronous collection of IMU pulse signals and GPS signals; the navigation solution module concurrently read the data collected by the data collecting module by the external memory interface of a high-speed floating-point type DSP and completes the real-time integrated navigation of inertia or GPS; the navigation result is output by the data output module; furthermore, the output information has the characteristic of multi-redundancy. The navigation computer has high integration, small volume, light weight, low power loss, good real-time performance, strong expansibility, convenient system updating, and can be widely applied to the navigation of moving carriers such as aircrafts, ships and ground vehicles, etc.

The invention discloses a video distributed coding format converting method which mainly comprises the following steps: slicing the original video, slicing a complete, big and long-duration video into several small videos, and converting the video code of the small videos to ensure that every piece of the video is an independent video sub-block, the smaller the video blocking is, the less elapsed time the code converting needs, thus the real-time property can be ensured; because the consumption on the computer resource is very high in code conversion, for reducing the characteristic of high consumption of the computer resource, the sliced video is sent to the resource idle code converting server to convert the code, therefore, not only is the code converting efficiency improved, but also the load of a single computer is reduced.

The invention provides a descriptor-based PCIE bus DMA controller and a data transmission control method, includes TLP sending engine, TLP receiving engine, interface access control module, DMA transfer control module, descriptor access control module, multi-DMA channel control module, control status register and DMA channel buffer. The DMA transfer process of the DMA controller designed by the invention is completely controlled by a descriptor, and the data bandwidth and the transfer efficiency are improved. DMA data transmission can configure multiple DMA channel, and that priority of each DMA channel, the transmission triggering threshold and the timeout time are programmable, so that the data transmission can be carry out according to the high and low priority, and the real-time data transmission of the specific channel can be guaranteed; The upload/download data buffers of all DMA channels can be dynamically managed to achieve multi-channel DMA multiplexing and ensure the efficiency of DMA transfer bandwidth.

The invention provides a cold chain monitor, a cold chain monitoring system and a control method of the cold chain monitoring system. The cold chain monitor comprises a master control module, a positioning module, an induction sensing module, a communication module, a door magnetism detection module, a voltage monitoring module, a data storage module, a clock module, a display module, a button module and a power supply module. The cold chain monitoring system comprises the cold chain monitor, a data collection device and a cold chain monitoring software platform. The control method of the cold chain monitoring system comprises the steps of initialization, data collection, data transmission, platform data display, scheduling processing and data analysis. By means of the cold chain monitor, the cold chain monitoring system and the control method of the cold chain monitoring system, the chain breaking problem in cold-chain logistics is solved, and the problems of temperature collection monitoring, data transmission, back-stage management and early-warning processing in the cold chain transportation process are especially solved.

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 discloses a vehicle obstacle-avoidance path planning research method based on a novel manual potential field method. The research method comprises that a CCD cameras, a millimeter wave radar and a vehicle-mounted sensor collect information needed by vehicle obstacle-avoidance path planning in real time, according to the information needed by vehicle obstacle-avoidance path planning, a road boundary repulsion potential field and obstacle repulsion potential field model based on the manual potential field method is established, a balance equation is established according to the force born by a main vehicle in a composite field formed by the road boundary repulsion potential field and the obstacle repulsion potential field, positional points which the main vehicle pass in the obstacle avoidance process are solved, an obstacle-avoidance path is thus obtained, and the speed of the main vehicle is controlled in the obstacle avoidance process to improve the safety and comfortableness. The research method of the invention is low in computing amount and is convenient to control in real time, and the planned obstacle-avoidance path is safer and more reliable than that planed by a traditional method.

The invention discloses a resource file inquiry method and system based on server and client caches, and belongs to the technical field of information digital processing. The method comprises the following steps: when a user requests to acquire required resources, checking whether or not resource list data to be inquired exists in a client local cache; if the resource list data to be inquired exists in the client local cache, and the timestamp of the data is unexpired, directly reading corresponding resource list data in the cache, and transmitting the read resource list data to a client for displaying; and if the resource list data to be inquired does not exist in the client local cache or the resource list data to be inquired exists in client local cache but the timestamp of the data is expired, sending an acquisition request to an institution server, a center server or a back-end web server in sequence. Through the method and the system, the occupation of network bandwidth and server resources is greatly reduced while the resource acquisition instantaneity of a user is ensured.

The invention relates to a solution for multiple mobile robot path conflict based on dense storage regions. The technical scheme of the solution comprises steps of (1), establishing an initialized mesh path image by dispatching a server; (2), detecting a cargo access task and dividing the task into a plurality of sub-tasks; (3), outputting task paths of current sub-tasks by using an image search method; (4), determining whether target points of sub-tasks are released by a last task; (5), marking all task paths by using task numbers; (6), returning to the step (2) after marking all task paths; (7), seizing resource variables through all tasks in a task executing queue; (8), dividing conflict regions; (9) determining whether conflict regions are released completely; (10), sending a task execution command to a mobile robot; and (11) returning to the step (7) after releasing resource variables to the server. The solution has the advantages of being reasonable in design, capable of distributing tasks at any time, planning tasks at any time and avoiding conflict at any time, high in accuracy, simple in calculation and practical.

The invention provides a method for replacing sensitive words in the call process of a mobile terminal. The method includes the steps that after a call instruction of a user is received, the mobile terminal is in a replacement mode; the mobile terminal records voice information of the user, semantic analysis and word segmentation processing are performed on the voice information so as to generate call words of the user, and the time point corresponding to each call word is recorded; the mobile terminal is used for analyzing the call words and judging whether the call words are the sensitive words or not; if the call words are the sensitive words, the mobile terminal replaces or eliminates the call words according to the time points corresponding to the call words. According to the method, the sensitive words are shielded through automatic processing of the voice information, therefore, call becomes more civilized, processing cost is low, the efficiency is high, and timeliness is good.

The invention provides an AEDF task scheduling method based on an SMP, and designs a dynamic load balancing method which runs on the SMP and is based on self-adapting. The method can track the current load condition of all the processors in the SMP in real time, and reasonably allocates different tasks into the processor with less loads in a dynamic way; in the process of task scheduling, by counting the runtime of the hung task, the method regulates time slot, period and blocking time of the next time of running in a dynamic way. The AEDF task scheduling method based on the SMP can comprehensively analyze the current load condition of the processors, task-fulfilling situation and the running condition of the system, and reasonably allocates resources of the processors, thus effectively improving the utilization rate of the resources of all the processors in the SMP, shortening execution time needed by completing all the tasks, and leading the operating efficiency and the using effectiveness of the SMP to be effectively improved; meanwhile, by adopting the execution sequence of dynamic scheduling task resources, the real-time requirements for executing urgent task can be guaranteed in a preferential way.

The invention discloses a vital sign parameter evaluation device on the basis of volume pulse wave detection, comprising an input module, a volume pulse wave collecting module, a main control module and a display; the input module is used for inputting the basis information of the user such as height HT, weight WT, systolic pressure Ps, and diastolic pressure pd; the input module, the volume pulse wave collecting module and the display are connected with the main control module; the main control module comprises a volume pulse wave characteristic point extractor and a vital sign parameter calculator; the vital sign parameter calculator comprises a pulse blood-ejection prophase PEP calculator; the blood-ejection prophase can be gained directly by the calculation of the volume pulse; one signal of the volume pulse wave can realize the innovative detection of main vital sign parameter; the volume pulse wave is generally measured at the finger end and the requirement on the position of the sensor is not high; furthermore, the detection and analysis speed is quick, the cost is low, the repeatability is good, and the stability is high.

The invention relates to a flight information instant informing device and a processing method thereof, and belongs to the technical field of civil aviation. The flight information instant informing device comprises a wireless digital communication network, a data storage transmission network, a computer application server, a data server, a base transceiver station and a hand-held device, wherein the computer application server and the data server are connected with a flight information database through a data transmission network and acquire information, a wireless transmitter/receiver of a base station sends instant data to the hand-held mobile device, and the hand-held mobile device is provided with a wireless communication unit, a data processing unit, an input unit and a display unit. The processing method thereof comprises that the hand-held mobile device utilizes an embedded convenient input module and an inquiry module to input customized or inquired information, and the hand-held mobile device outputs voice information through text-to-speech processing of a voice processing module after receiving data result display information. The device and the method have the advantages of accurate and real-time customizing and tracking, complete, convenient and efficient informing, and the like.

The application discloses a method and a system for updating statistical data. The method comprises the following steps: a service system receives a service request from a user, conducts data processing for the current service and saves the service data processed into a service database and the message queue in a calculation server; the calculation server acquires the current service data processed from the message queue, conducts increment statistical computing to acquire increment statistical data of the current service processed and updates the statistical data into the statistical table database; a task server periodically traverses the service data in the service database, executes the statistical computation based on the service database to acquire the statistical data for the whole service database and applies the statistical data for the whole service database to overwrite all of the data in the statistical table database and update the statistical table database.

The invention relates to an active power distribution network transient state real-time simulation system designing method based on an FPGA. The active power distribution network transient state real-time simulation system designing method can be implemented in an off-line simulation environment and an on-line simulation environment in a dividing mode, the off-line simulation environment is responsible for calculating the total clock period number-n<total> and simulation using time-t<total> calculated in each time step, the simulation step size deltat is set according to the real-time simulation using time-t<total>, relevant parameters calculated according to the simulation step size deltat and the read basic parameter information are uploaded to the on-line simulation environment based on the FPGA. Real-time simulation calculation is completed in the on-line simulation environment, the simulation state is controlled through a finite-state machine, each time step includes the steps of historical item current source column vector calculation of all elements, total historical item current source column vector formation of the elements and linear equation system solving and updating of the elements, and the historical item current source column vector calculation step of the elements and the updating step are completely independent and can be processed in a concurrent mode. According to the active power distribution network transient state real-time simulation system designing method based on the FPGA, the real-time performance of the transient state simulation process of the whole system is guaranteed, and the good feasibility and the good applicability are achieved.

The invention relates to an industrial wireless WIA-PA network and time sensitive network conversion method and apparatus, and belongs to the technical field of industrial networks. The apparatus consists of a TSN switch, a WIA-PA/TSN converter, a WIA-PA router and a WIA-PA field device. In the method, the WIA-PA/TSN converter is designed, two manners of MAC address addressing and IPv6 address addressing are supported, the mapping between a WIA-PA data stream and a TSN data stream is completed, the support of a data transmission priority is maintained, and the protocol conversion and interconnection between WIA-PA and TSN are effectively achieved; and furthermore, the invention further provides a transmission delay guarantee method between the WIA-PA and the TSN, the data can arrive withina specified deadline by allocating communication resources such as transmission time slots and the like, so that the instantaneity and certainty of the transmission of the data between the WIA-PA/TSNis ensured.

The invention relates to a distributed IPTV service transmission quality monitoring method, and the method is used for monitoring the quality of IPTV service flow carried by a large-scale IP network and influence of the network on the IPTV service flow. The invention adopts a central server and a plurality of IPTV service quality monitoring instruments, a bypass for network data is provided at the access end of an IPTV service quality monitoring instrument, a packet-grabbing analysis of network data is performed in the situation that the network is assured to be run normally; data having important reference sense to the quality of the IPTV service is found out through processing and analyzing bulk information; the central server and the IPTV service quality monitoring instruments are communicated with each other through a network protocol capable of realizing semantic analysis, and safety of the transmission of information can be assured by adopting an information safety assuring system; network fault generating points and bottleneck points of network performance can be identified intelligently through the analyzing of monitored data, and corresponding solutions can also be provided.

The invention provides an acousto-optic sleep intervention system and method based on electroencephalogram signals. The method includes the steps: acquiring, processing and analyzing the electroencephalogram signals in real time during sleep through a universal electroencephalogram acquisition system; staging sleep by a data mining method; intervening through the sound and light in the REM (rapid-eye-movement) period of sleep and shallow sleep to achieve the purpose of improving sleep quality. The system includes a sleep electroencephalogram acquisition module, a sleep electroencephalogram staging module, and a sleep intervention module; the sleep electroencephalogram acquisition module is used to acquire the electroencephalogram signals that have continuously changed during sleep, the electroencephalogram signals after the output, and the extracted electroencephalogram characteristic information; the sleep electroencephalogram staging module is used to staging the sleep electroencephalogram characteristic information with trained sleep staging models; the sleep intervention module is used for selecting a suitable sleep intervention program based on the staging results, and the subject undergoes double intervention of sound and light.

The invention discloses a space interaction method of mobile equipment with the human-computer interaction capacity. The method includes the steps of rebuilding a depth map of an image according to the two-dimensional image shot by the mobile equipment in real time; performing region segmentation on the depth map to obtain a human body position region in the depth map; mapping the human body position region in the depth map to a virtual scene; and detecting whether the human body position in the virtual scene collides with other objects in the virtual scene, if the collision happens, determining a body language according to the temporal space change of the human body position in the virtual scene, and the virtual scene making response according to the body. According to the method, accuracy and timeliness of space interaction can be improved.