122results about How to "Overcoming real-time" patented technology

An open natural gas leakage multiplex inspecting method and optical channel configuration, based on semiconductor laser absorbing spectrum method, relates to master case and open long optical channel system. The master case sets with electrical source socket, switch, fan, optical fiber linker and data transmission interface. The master case owns closed infrared semiconductor laser, semiconductor laser controller, phase-locked amplifier,signal generator,data collection disposal and control module, light switch, light switch driving circuit and infrared detector and connects with the locale optics system by optical fiber. Open optical system relates to integral optics telescope and more component angle reflector array and the former owns import optical fiber coupling implement and output optical fiber coupling implement. It achieves the time-sharing inspect of more gas component and more multiplex based on optical fiber distributing configuration of the light switch technology.

The invention discloses a motor function rehabilitation monitoring system based on a wireless body area network. The system comprises a sensor terminal node, a wireless gathering node, a wireless body area network gateway, a personal terminal, a remote medical terminal and an information feedback system, wherein the sensor terminal node comprises a medical sensor, a signal conditioning circuit, a microprocessor unit and a wireless transceiver unit which are sequentially connected, the medical sensor sends collected data into the signal conditioning circuit for preprocessing, and the wireless transceiver unit is controlled to perform wireless transmission after the data is processed by the microprocessor unit; the data collected by the sensor terminal node sequentially passes through the wireless gathering node and the wireless body area network gateway and is respectively transmitted into the personal terminal and the remote medical terminal, and the data is transmitted into the information feedback system after being processed by the remote medical terminal, and is displayed by a 3D model built through the information feedback system. The monitoring system can be used for monitoring the exercise rehabilitation situation of a patient in real time, providing reasonable guidance and advices for subsequent rehabilitation training and improving the rehabilitation training effect.

The invention discloses a dynamic gesture identification method in an interactive system, comprising the following four steps of: acquiring an image, and obtaining a current image frame after denoising; obtaining a moving region of the image by calculating the difference of the current image frame and a reference image frame, and obtaining a binary image by a skin color detection method; carrying out gesture segmentation on the binary image by a gray level projection method to obtain a gesture region and a barycentric position; and obtaining a final identification result by a classification identification method according to the barycentric position and fingertip characteristics. The method can be used for overcoming the problems of high complexity, low real-time quality and low identification rate in traditional algorithms, has the advantages of simplicity in implementation, good real-time quality and high identification rate, and can be applied to the dynamic gesture identification very well. Moreover, the method can tolerate the translation of a definition gesture, the scale and the transformation of a rotation angle, and has a good robustness.

The invention provides a harbor crane health monitoring and forecasting visualization system including a sensor subsystem, an information collection and transmission subsystem, a central server and a system client; the sensor subsystem is used for acquiring real-time operation parameters of a crane; the information collection and transmission subsystem is used for sending the real-time operation parameters of the crane to the central server through a wireless sending unit; the central server is used for storing and managing the real-time operation parameters of the crane, then performing health diagnosis on the crane to obtain a health condition diagnosis report, also forecasting whether the crane is failed or goes wrong according to the diagnosis result, and evaluating the operation safety of the crane to obtain a safety evaluation report; the system client is used for displaying the real-time operation parameters of the crane, the health condition diagnosis report and the safety evaluation report. The system can comprehensively, efficiently and real-timely monitor the harbor crane health condition, so as to ensure the safety operation of the harbor crane.

The invention provides an inverse-kinematics universal solving method of a robot with multi-degree of freedom. The common space theory is used for setting a universal kinematical equation of an nR robot, the weighted space vector projection method is used for analyzing the relationship between space vector projection values and revolute joint angles of a space robot, projection weighted values of joint vectors on robot tail end vectors are used as the basis for regulating the tail end pose of the robot, and projection weighted values of joint vectors are determined to achieve half-analytic solution of the inverse kinematics. The method achieves kinematical salvation of the nR robot and also finishes the space obstacle avoidance task. The method can be widely applied to series type space nR robots, has the advantages of being high in calculation speed and high in solving precision, provides control input parameters for series type robots, and meets the requirement for robot kinematics solving operation on industrial sites.

The invention relates to a multi-micronano detector networking joint demonstration verification system based on an intelligent mobile robot, comprising a ground synergic control workstation, a synergic control model library, a satellite wireless communication equipment simulator, an intelligent mobile robot, a GPS (Global Positioning System) receiver, video navigation equipment and a display terminal, wherein the ground synergic control workstation controls the synergetic work and the formation transform and maintenance of the whole system; the synergic control model library provides a control algorithm and a control model for the ground synergic control workstation; the satellite wireless communication equipment simulator provides a communication link between satellites and the workstation; the intelligent mobile robot as a carrier of the GPS receiver and the satellite wireless communication equipment simulator is controlled by the control workstation to move and used for simulating the relative position change among the satellites; the GPS receiver and the video navigation equipment realize the relative navigation among the satellites; and the display terminal displays a networking joint verification result in real time. The invention can effectively decrease the test cost of a multi-micronano detector networking detection system, shortens a research and development period and has important engineering application values.

The invention is a processing method for instant communication, relating to electric communication technique, and in the instant communication, when a transmitter transmits a message to a receiver R, the message is instantly transmitted to other receivers if the receiver R is not on-line; these other receivers as proxy receivers of the receiver R receive the instant message sent to the receiver R; the receiver R arranges the proxy receiving relations of other receivers by the instant communication system; these other receivers have a different priority to the proxy reception for the receiver R, and the instant message is sent to high priority ones of these other receivers; when these other receivers off-line, the message is stored as an off-line message; the instant message received by the proxy receivers contains a characteristic message, which reflects original belong attribute of the instant message is belonging to the receiver R. The invention assures the realtime and integrity of instant interactive communication.

The invention discloses a Netty-based large screen visualization platform data push system which comprises a data collection layer, a data set inquiry service layer and a client display layer. The Netty-based large screen visualization platform data push system disclosed by the invention directly pushes data to a relevant subscribed client through an asynchronous and event-driven network application framework, realizes data real-time update, and overcomes the problem that the traditional plugged IO (Input/Output) multithread mode can not meet the requirement of real-time and stable push of large data by a large screen visualization platform.

The invention provides an alternating tidal current computing method and device for a light high-voltage direct current transmission system; the alternating tidal current computing method comprises the following steps of: dividing the whole system into two parts of an alternating current subsystem and a direct current subsystem by using a busbar of an alternating current system as a dividing line, wherein the alternating current system is connected with a converter station; treating the converter station of the alternating current subsystem as an equivalent PQ or PV node on an alternating current node when the variable quantity of the operational state of the alternating current subsystem is solved; and modeling an alternating system as a constant voltage applied on the bus of the converter when an equation set of a direct current system is solved. The alternating tidal current computing device for the light high-voltage direct current transmission system comprises a data acquisition unit, a data transmitting unit and a data processing unit. The invention has the advantages of being simple and easy in implementation, being good in procedure generality, overcoming the disadvantages of bad timeliness, high error rate and the like and increasing the computation speed and correctness. The device adopts a double-port RAM (Random Access Memory) circuit so as to solve the problem of low data transmission speed; and a set of spare double-port RAM (Random Access Memory) is added for ensuring the correctness and reliability of the system operation.

The new type nodal real-time gas densitymonitoring method and sensor has one near infrared DFB semiconductor laser and operates on the characteristic absorption of methane in the near infrared spectrum region. One monomode fiber power coupler is used in separating the laser beam into several beams led through fibers to fiber gas absorption cells in mine, and the laser beams through the absorbed gas are then led through fiber to the input optical switch. The selected signal through the calibrating cell is projected to the laser detector. By means of wavelength modulating technology and second harmonic detecting technology, the present invention realizes gas density measurement in high sensitivity, high resolution, no gas interference and fast response. Background light strength signal fitting method is adopted to eliminate the influence of light strength fluctuation on the measurement.

The invention discloses a control method of a monitoring ball machine. The method comprises the following steps of (1) vertically and horizontally dividing a to-be-monitored space into a plurality of small partitions, and setting a shooting focal distance for each small partition; (2) setting corresponding preset positions for a central point position and an edge point position of each small partition, and storing horizontal position information, vertical position information and shooting focal distance information of the ball machine; (3) reading a video frame, and performing target detection on the video frame; (4) according to direction information of a detected target in a monitoring scene, mapping the target to the corresponding preset position; (5) calling the preset position by the ball machine to acquire a monitored image. The defects that the automation degree of control is not high, the real-time property and the flexibility are not enough, and human manual interference is required in a ball machine of the traditional video monitoring system are overcome; the control method is convenient in operation, high in automation degree of control and good in instantaneity, and is particularly good in capture effect on the monitored image of a quickly moving target.

The invention discloses an automatic film label indexing method and an automatic indexing system. The automatic film label indexing method mainly comprises the steps that semantic film labels are generated and a semantic film metadata specification frame is formulated; an automatic film label indexing system is established, wherein the automatic film label indexing system generates and fills film transmission feature information semantic label vector codes into a semantic film label library according to the semantic film metadata specification frame. Accordingly, the shortcoming that manual indexing cost is very high, the indexing speed is low and the indexing is not suitable for online and real-time data information in the prior art is overcome, and the advantage 'personalized content-oriented active service' of network information resources is achieved, and the advantage of comprehensive, accurate and efficient indexing of a large quantity and a variety of film information having strong dynamic nature is achieved.

The invention discloses a general calculation method for inverse kinematics of serial robots. The general calculation method comprises the following steps of classifying and simplifying a plurality of types of robot moving joints to establish a uniform robot moving joint kinematic model; performing two-dimensional processing on robot working configuration according to a planar processing method, classifying and dividing formed planar configurations on the basis and respectively establishing automatic planar configuration working space calculation methods; and performing configuration plane matching on any robot configuration to solve the inverse kinematics of the serial robots. The method overcomes the defects of the limitation and specificity for solving the robot configuration by the traditional analytic method, and solves the problems of non-instantaneity and low accuracy of a general iterative method, can quickly and accurately solve the inverse kinematics of the robots, and meets the requirement for calculating the general robot kinematics and the actual requirement on robot motion control.

The invention discloses a low-altitude target tracking system based on a FPGA. The low-altitude target tracking system comprises an image acquisition module for initially configuring a video decoding chip, wherein the image acquisition module decodes a data format on a video decoding chip bus to extract a video field, line and effective pixel data, and extracts the pixel gray level; the to-be-processed pixel and neighborhood value are registered in the preprocessing module to form a filter window, the FOFI and the data in the register are updated once at each gray level clock so as to obtain a new filter window; the data in the filter window is sorted and selected to obtain a filter mid value; a target segmentation module for performing sub-window region average gray value computation, dynamic dual-threshold computation and binarization; a target positioning module for performing centroid computation and prediction; a communication module for sending a target centroid coordinate; and a cradle head control module for controlling a cradle head to rotate according to the centroid position of a target, and controlling the target at the view center of a camera.

The invention relates to a system and a method for automatic in-situ monitoring on leakage of an underground sewage pipeline. The system provided by the invention comprises an upper computer for controlling and a resistivity feeler lever the bottom of which is provided with a cone head, the resistivity feeler lever is formed by splicing at least 5 pluggable nylon modules and copper pole rings which are clamped in the butt seam of two adjacent nylon modules, sliver is plated on the inner and outer surfaces of the copper pole rings, and the top of the resistivity feeler lever is provided with acollection control circuit and a wireless data transfer module; the collection control circuit comprises a control program and is connected with the copper pole rings by virtue of wires; a public network server and client software are matched with the wireless data transfer module. The monitoring method comprises the following steps: burying or penetrating a monitoring point positioned on the underground sewage pipeline into the resistivity feeler lever; and controlling the system to operate and automatically alarm when the leakage reaches the threshold by virtue of client software. The system and method provided by the invention integrates the functions of automatic collection, remote transmission, data storage, intelligent processing, automatic alarm and remote control, is simple to useand high in automaticity, and can be used for overcoming the defect on the real-time performance and accuracy of traditional methods.

The invention provides a method and device for high-speed wired duplexing information communication between a well and the ground. The method comprises the steps of: collecting signals in the well by a sensor; modulating the collected signals by adopting a coding orthogonal frequency division multiplexing technology into OFDM (Orthogonal Frequency Division Multiplexing) signals; transmitting the signals to the ground by a basic structure unit consisting of a drill stem with cables and the like and further demodulating to obtain the collected signals in the well, thereby determining the underground temperature, pressure and fluid condition, formulating a drilling well completion strategy and forming a ground control instruction which is transmitted to an appointed position in the well by a transmission system. Compared with traditional like technologies, the system has the advantages of a large amount of transmittance data, high transmission speed, strong real-time property, two-way communication, high confidentiality and the like.

The invention discloses an image processing method in an underwater vision SLAM (Simultaneous Localization And Mapping) system. The image processing method comprises the following steps: establishing an underwater imaging model; processing influence of underwater environment factors on a camera imaging; carrying out image feature extraction and matching. According to the method, extraction on feature points of an underwater environment image in the later period is reinforced; according to a data correlation method which is newly disclosed on the basis of the improved SLAM system, the feature points are extracted in a matched manner, so that the feature points can be more rapidly and accurately extracted; real-time performance of an SIFT algorithm is improved. The method which uses a relative position factor of a binocular camera and a way point position factor as auxiliary conditions for carrying out correlation can effectively solve the problems of mismatching and poor matching efficiency in the data correlation.

The invention relates to a system and a method for positioning agricultural machinery based on satellite navigation and dead reckoning, wherein the system comprises a satellite navigation module, a dead reckoning module, and a navigation computer module; the satellite navigation module is used for obtaining geographical location information of the agricultural machinery; the dead reckoning module is used for collecting a relative displacement and a course angle of the agricultural machinery for implementing the dead reckoning calculation; the navigation computer module is used for employing the Kalman data fusion algorithm in combination with the satellite navigation module and the navigation computer module for positioning the agricultural machinery. The method and system for positioning agricultural machinery based on satellite navigation and dead reckoning employing such a structure achieves the advantage incorporating the instantaneity of the DR algorithm with the high precision of GPS, overcomes the defects of accumulative error of the DR algorithm and the bad implementation of GPS; the system and method have a higher precision and instantaneity, and are specifically applicable to obtaining and processing data in agricultural machinery auxiliary driving control system; the system and method have a wider application range.

The invention discloses an information processing method based on an environmental benefit monitoring sensing network, and a system and a device both adopting the information processing method. The information processing method is characterized by comprising the steps as follows: S1, a central node and a network switching node or a data transceiver module of a monitoring server can be in a continuous or intermittent monitoring mode according to preset programs or manual input commands or the commands that are transmitted through a network device or an active or passive wake-up circuit after the central node and the network switching node of a background processing system are installed or called or the monitoring server starts up, and then data transmitted by a monitoring unit on a wireless sensor network acquisition node is collected; and meanwhile, in S2, the central node and the network switching node or the monitoring server can transmit the commands to the wireless sensor network acquisition node when the background processing system sends the commands according to the preset programs or the manual input commands or the commands that are transmitted through the network device or the active or passive wake-up circuit. The system and the device can direct to open-ended commands and services. The technology is suitable for being applied to WSN (Wireless Sensor Network) projects such as Sensing China, Smarter Planet and the like.

The invention belongs to the technical field of wireless communication and discloses a terminal autonomous network selection system and a method of wireless heterogeneous network. The terminal detectsand obtains service node information by using ANDSF to form a service node list of the terminal. The terminal obtains the RMI of each node in the service node list by using pilot signal measurement and carrier sensing. The terminal triggers the feature learner, inputs the measured RMI of each node to the feature learner, and outputs the measured RMI as an evaluation value of the link quality of each node. The terminal uses 802.11 u standard and ANDSF to obtain the load information of each node in the service node list. The terminal triggers the policy learner, inputs the obtained link qualityevaluation value and load information of each node to the policy learner, and outputs the obtained link quality evaluation value and load information to the policy learner to select an access node for the terminal. The terminal records the selected node and updates and records the network selection benefit. The invention overcomes the shortcomings of additional signaling overhead and delay causedby adopting server assistance or network assistance.

The invention provides a solving method of kinematics of an underwater mechanical arm based on a configuration plane. The calculation method comprises steps of inputting joint parameters of the underwater mechanical arm by carrying out analysis for mechanical arm joints, resolving the known working configuration of a robot according to types of joint modules, resolving the robot joints into corresponding types of basic joints according to movement types and inputting position arrays of target points of the robot; and modeling the basic joints by carrying out kinematical modeling for basic moving joints forming the space mechanical arm, and normalizing the kinematical modeling to form a unified modeling method. According to the invention, disadvantages are solved that solving is complex and it is hard to remove incorrect solution from multiple solutions in a traditional analytic method; problems of poor real-time performance and low precision of the common iteration method are solved; solving for inverse kinematics of the robot can be quickly and precisely achieved; and actual application requirements of the underwater mechanical arm are met.

The application provides a congestion control policy recommendation method and system based on real-time traffic capacity. The method comprises the following steps: realizing lane traffic capacity real-time computation based on transportation big data, and then monitoring the lane traffic capacity in real time to realize real-time alarm of the road congestion, and helping traffic administrative department quickly analyze a congestion reason and recommending a control policy through an AI algorithm. The large-scale, high-efficiency and real-time computation problem of the traffic capacity is effectively solved, the road supply-demand relation is reasonably analyzed, the congestion real-time alarm and the control policy quick recommendation are realized, thereby timely and accurately relieving transportation congestion

The invention discloses an achievement method of an intelligent public transportation network information service system. A card swiping reader reads data information including bus card number of a bus card and uploads the data information to a vehicle-mounted server. The vehicle-mounted server receives the bus card data information uploaded by the card swiping reader and updates a card swiping record list. An APP of a mobile intelligent terminal sends access request information carrying the bus card number to a vehicle-mounted wireless router and queries whether the bus card number exists in the card swiping record list or not so as to decide whether the APP of the mobile intelligent terminal is permitted to be connected to vehicle-mounted WiFi. By means of the achievement method of the intelligent public transportation network information service system, the defect that existing vehicle-mounted WiFi access modes including paper verification codes, short message verification codes and the like are not flexible and intelligent and are poor in real-timeliness and the like is overcome, and the vehicle-mounted WiFi can be quickly and intelligently accessed for a passenger who swiped the card. In addition, abundant information service can be provided for passengers by means of the achievement method.

The invention relates to a wireless Ad hoc network real-time multimedia video transmission method, which includes that one or a plurality of paths, the available bandwidth of which satisfies the multimedia video transmission quality requests, are chosen to be used as the main path or the main and reserved paths according to routing requests. The node available bandwidth equals to the difference between the effective bandwidth of a network layer which is multiplied by the difference between one and Alpha and the bandwidth occupied sum of the node and the neighborhood node. The main path is used for transmitting the real-time multimedia video. At the same time, the main path is switched to the reserved path for the transmission according to the failure detection result of the main path. And the renewed selection or the maintenance detection is implemented according to the existence of the reserved path and the renewed selection is implemented again according to the failure maintenance detection result. The detection of the main path is that upstream nodes actively send the ACK request irregularly according to the last successfully received current network condition which is responded by the round trip time LAST_ACK_RTT of response ACK signals to downstream nodes and judge the effectiveness of link paths and the main path according to the returned result. The real-time video business is realized on the basis of the invention.

The invention discloses a multi-functional intelligent wrist-type help-seeking hand ring which comprises a shell (1) and an inner core (2). The shell is provided with a wristband; the inner core is provided with a circuit board, a GPS antenna, a GSM antenna, a pickup, a speaker, a charging interface, a vibration motor, a camera, a display screen, a button, a lithium battery, and an SIM card seat; a microprocessor, an intelligent communication chip, a video chip and a memory are arranged on the circuit board; the inner core is arranged in the inner cavity of the shell. During application, an SIM card is required to be inserted into the multi-functional intelligent wrist-type help-seeking hand ring, so that a network operator can provide services, and the multi-functional intelligent wrist-type help-seeking hand ring can be kept in contact with a GPS; the multi-functional intelligent wrist-type help-seeking hand ring is worn on a wrist through the wristband, so that the multi-functional intelligent wrist-type help-seeking hand ring can move with a user; during use, the button is pressed, and the functions of GPS location, telephoning, transceiving of SMS, WeChat, micro-video and micro-audio, video displaying, recording, picture recording, photographing, and information saving are realized by operating virtual buttons displayed on the display screen. Therefore, the multi-functional intelligent wrist-type help-seeking hand ring being an electronic hand ring has the functions of GPS locating, real-time information exchange, and automatic alarm for seeking help.

The invention provides a three-dimensional modeling method nuclear system combining a dome-screen camera and a depth camera, which relates to the technical field of three-dimensional imaging modeling.The system at least comprises the depth camera and a dome-screen camera. The method comprises eight steps that S1, a dome-screen camera lens and a depth camera lens are fixed at the same position inthe space; S2, photographing is carried out by using the dome-screen camera; S3, preliminary positioning is carried out through a VSSLAM algorithm; S4, the three-dimensional information and space information in the three-dimensional picture are adopted for calibration; S5, further accurate positioning is carried out; S6, a dense point cloud is formed; S7, the accurate dense point cloud is furtherobtained; S8 digital modeling is carried out to generate a three-dimensional model; S9 mapping of the three-dimensional model is automatically carried out according to the color information in the two-dimensional panoramic photo. The invention is advantageous in that the three-dimensional model has the advantages of the dome-screen camera and the depth camera at the same time, and the three-dimensional model is more accurate; the defects that the angle of the depth camera is single, the vision field is limited, and the dome-screen camera is prone to generating errors are solved.

The invention discloses a mobile application channel logging and monitoring method, apparatus and system, and a storage medium. The mobile application channel logging and monitoring method includes the steps: receiving the log-in information generated from the mobile application which utilizes the image identification technology to automatically log in any one channel; writing the log-in information into a configuration file; taking the preset monitoring period to read the log-in information in the configuration file; according to the log-in information, generating a verification request and then sending the verification request to a channel service terminal; and receiving the verification result fed back from the channel server so as to determine the log-in situation of the channel. In the scheme of the mobile application channel logging and monitoring method, apparatus and system, the log-in information of the channel is generated from the mobile application which automatically logs in the channel through the image identification technology, so that the problem that manual log-in consumes long time and cannot be monitored in real time is solved; and channel monitoring can be performed through real log-in of the client in the mode of verifying the log-in information, so that the log-in situation of the channel can be reflected truly.

The invention discloses a distributed train running control system in the field of commanding and dispatching of the railway running train and a control method thereof. The technical scheme is as follows: the distributed train running control system comprises an execution layer, a section control layer, a line control layer and a railway network control layer from top to bottom; the adjacent layers have the mutual-communication function; the lower layer provides the processed state information for the upper layer; and the upper layer provides the control policy for the lower layer according to the processed state information. The distributed train running control method is as follows: after the control cycle is started, the corresponding knowledge base is searched according to the lower-layer information, the information of an intelligent agent which is adjacent to the layer and the upper-layer information; whether the corresponding control rules exist in the knowledge base or not is judged; if so, the control policy is made directly; if not, the learning control is carried out so as to control the rules; finally, the control policy is executed. In the invention, the ability limit and the real-time limit of the traditional running-train commanding system are overcome, and the flexibility, the real-time function and the optimal control of the running train are ensured.