40results about How to "Guaranteed real-time synchronization" patented technology

The invention discloses a data migration method and device used for migrating a data table from an original database to a target database of a distributed database containing multiple storage nodes. The method comprises the steps that full-amount data corresponding to a to-be-migrated data table is acquired, and a distribution column is set for each data record in the full-amount data; all the data records are migrated into all the storage nodes of the target database respectively according to the distribution columns; log point location information corresponding to the full-amount data is determined; and a log record generated after the log point location information is acquired, data operation corresponding to the log record is determined, and the data operation is executed according to the full-amount data stored in all the storage nodes of the target database. By the adoption of the scheme, the data can be migrated to the distributed database containing the storage nodes under the condition of not influencing online business, the situation that the processing capability of a distributed main node influences data migration efficiency is avoided, the data migration efficiency is improved, and real-time synchronization of the data is guaranteed.

The invention discloses a communication device and an active-standby system data online exchange method for a hot master control panel backup. The active-standby system data online exchange method is applied to the communication devices of active and standby systems with a master control panel and a business board, and the active-standby system data online exchange method comprises the following steps of: transmitting business operation data to the master control panel of the active system by the business board of the active system via the communication module between boards; synchronizing any business operation data of the active system into the master control panel of the standby system by the hot backup module of the active system; confirming the attribution of the business operation data and in real time updating the data of the module involving in the business operation data from the business card of the standby system by the master control panel of the standby system. The technical solution of the invention can ensure that data between the active system and the standby system can be in real time synchronized.

The invention discloses a data transmission method based on multi-network communication. The method comprises the steps of obtaining to-be-transmitted data needing multi-network interaction in a videoprivate network; processing the to-be-transmitted data by adopting a gatekeeper technology to generate a first data file; by user-defined remote procedure call (RPC) communication, transmitting a data processing request carrying a first data file to a second electronic device on one side of the public security network, wherein the user-defined RPC is used for remote communication between different networks; receiving a second data file returned by the public security network after the second electronic device processes the first data file by adopting self-defined RPC communication; and processing the second data file by adopting the gatekeeper technology to obtain a final data file. The invention further provides a first electronic device, a second electronic device and a computer readable storage medium. According to the invention, the user-defined RPC communication can be adopted to carry out data transmission among multiple networks, and real-time synchronization of data is ensured.

The invention discloses an Internet of thing water purifier intelligent control method and a computer board thereof. The things-of-internet water purifier intelligent control method comprises steps ofbinding a things-of-internet user card, connecting a network, acquiring and recording a device condition, displaying a state, and performing the communication interaction, wherein the user binding and network connection are performed by virtue of a things-of-internet card, a heartbeat packet and a communication packet are regularly transmitted to automatically check a network signal and to reconnect the network, the device state of the purifier is acquired in real time and recorded and displayed, the recording is synchronized with a cloud server, an external control device is communicated with the water purifier device, the external device controls the water purifier device to work and also performs the communication interaction with a cloud server, the communication delay time can be dynamically adjusted according to a network response speed, and the data can be updated in real time. The stability of the network can be ensured, the state of the water purifier device is recorded synchronously in real time, the water purifier device is remotely operated, the data of the server can be updated in real time and can be synchronized, the state of various water purifier device can be more precisely monitored, and the water use healthy can be better ensured.

The invention discloses an information transmission system, a method and a relevant device, which are used for synchronously displaying sensor information and video information in real time in the same rendering interface of the same screen. The system comprises a sensor measuring and controlling node which is used for sending the acquired sensor information to a sensing aggregation device, the sensing aggregation device which is used for triggering a video acquiring device to acquire the video information when the sensor information achieves to the preset triggering conditions, and sending the sensor information to an M2M (Machine to Machine) subsystem, the video acquiring device which is used for acquiring the video information and sending the video information to a video fusion subsystem under the triggering of the sensing aggregation device, the M2M subsystem which is used for forwarding the sensor information to the video fusion subsystem, the video fusion subsystem which is used for superimposing the sensor information and the video information, and sending the acquired video fusion data to terminal equipment bound by the sensor measuring and controlling node, and the terminal equipment which is used for presenting the video fusion data.

A system for reducing tripping frequency of a power distribution line comprises a province dispatching data-side sub-system, a power grid operation and maintenance sub-system and a fiber transmissionline, wherein the fiber transmission line is used for connecting the province dispatching data-side sub-system and a power grid operation and maintenance sub-system, the province dispatching data-sidesub-system comprises a province dispatching data network, an acquisition server, a first data server, a first switchboard and a first photoelectric converter, the power grid operation and maintenancesub-system comprises a second photoelectric converter, an entity fireproof wall, a communication server, a second data server, a second switchboard and a working station, and an output end of the first photoelectric converter is connected with an input end of the second photoelectric converter via the fiber transmission line. A reliable and safe fault information control platform is formed by fully utilizing an existing network passage of a province power company and fault information of a province database; and by the system, the functions of fault information classified counting, comparisonanalysis, fault positioning, protection configuration setting and operation and maintenance suggestion can be provided according to fault tripping information and fault processing information.

The embodiment of the invention discloses a database query method and device. The database query method can comprise the steps that a database splits data to be processed according to the structural rule to which the data to be processed confirms to obtain subdata and positions of the subdata in the data to be processed; the database receives data to be queried; the database obtains the positions of the data to be queried in the data to be processed from the subdata and the positions of the subdata in the data to be processed.

The invention relates to the communication field and discloses a data synchronization method and a device for forwarding boards, and is used for improving the execution efficiency of a data synchronization flow and lowering the communication overhead among the boards. The method comprises the following steps: a main forwarding board stores relevant information of business data in the form of a business data linked list, then sequentially reads the information saved in the business data linked list by linked list nodes so as to obtain the corresponding business data when designated time is reached, and finally sends the business data to a standby forwarding board for data synchronization. In the invention, the business data linked list has high access efficiency, thus ensuring real-time business data synchronization between the main forwarding board and the standby forwarding board, and further ensuring smooth business transition and improving the business reliability of communication equipment in the case of switchover between the main forwarding board and the standby forwarding board.

The present invention relates to a redundancy control system and method suitable for direct current transmission, and a management control device. The management control device comprises a control unit, a trigger/return check optical module and at least two communication modules. The trigger/return check optical module is used for connecting power electronic switches. Each communication module isused for connecting a valve control unit and a redundancy management control device. The control unit has a selection function, and can select the correct and fastest trigger signal from trigger signals from different communication channels. The system includes the valve control unit, at least two of the above-described management control devices, and the power electronic switches coupled to eachof the management control devices. The method monitors communication channels of trigger signals received by the control units of the power electronic switches, and timely selects the first-received correct trigger signal as a trigger instruction to be output according to the reception completion flag bit and the communication check bit. The invention improves the stability of the system operation, the control reliability and the error correction capability of the system.

The invention provides a monitoring unit for an airborne synthetic visual guidance system. The monitoring unit comprises a display module and a monitoring module, wherein the monitoring module is usedfor monitoring the display module in real time, and the display module comprises an alarm display sub-module, and a database, a graph generation sub-module and a graph display sub-module which are connected in sequence. The monitoring module comprises a navigation deviation calculation sub-module, a monitoring algorithm processing sub-module and a monitoring result feedback sub-module which are connected in sequence; the graph display sub-module is connected with the monitoring algorithm processing sub-module; and the alarm display sub-module is connected with the monitoring result feedback sub-module. An instrument landing system and radio altitude information are used as monitoring information sources; the display information of the SVGS is calculated and monitored in real time, and a result is fed back to a pilot through an independent channel, so the safety of the synthetic visual guidance display system is improved, the misguidance probability of the synthetic visual guidance display system is reduced, and the synthetic visual guidance display system can meet airworthiness requirements.

The invention discloses a source end synchronization device and synchronization method applied to audio and video signals, and an audio and video display device. The source end synchronization device provided by the invention comprises an audio and video receiving unit which is used for receiving an externally input audio and video signal, analyzing the audio and video signal, outputting a video signal, an audio signal and a synchronization signal, transmitting the video signal to a video processing unit, and transmitting the audio signal and the synchronization signal to an audio processing unit; the video processing unit is used for performing frame caching on the video signal and generating a video output signal to be transmitted to an external display terminal; and the audio processing unit is used for generating an audio enable signal according to the synchronizing signal and the cache information of the frame cache of the video processing unit, and outputting an audio signal according to the audio enable signal. According to the embodiment of the invention, the audio enable signal is generated according to the frame buffer of the video signal and the synchronization signal, so that the synchronization of the video signal and the audio signal is realized at the source end, and the method has a wide reference prospect.

The invention provides an ADC sampling data recognition method and system, an integrated circuit and a decoding device. The ADC sampling data recognition method comprises the following steps: identifying ADC sampling data; the ADC integrated circuit converts the sampling data of the n time-interleaved ADC chips into serial data, generates a lead code sequence, splits the serial data and the lead code sequence to obtain new serial data, sends the new serial data to the decoding device, generates a clock signal matched with the new serial data, and sends the clock signal to the decoding device;and the decoding device receives the new serial data and the clock signal sent by the ADC integrated circuit, obtains a lead code sequence for splicing according to the agreement with the ADC integrated circuit, and identifies the starting position of the sampling data of the time-interleaved ADC chip according to the new serial data, the clock signal and the lead code sequence for splicing. According to the invention, the starting position and the synchronization state of the sampling data can be judged under the condition of not changing the working mode of each time-interleaved ADC chip.

The invention provides a stripe structured light three-dimensional reconstruction method based on virtual binocular. The method comprises the following steps: constructing a virtual binocular stripe structured light visual system based on biprisms; calibrating the virtual binocular vision system to obtain internal and external parameters of two virtual binocular cameras; projecting a three-frequency four-step sine fringe image to an object; unwrapped phases corresponding to the left virtual camera and the right virtual camera are obtained through a multi-frequency heterodyne unwrapping method; performing epipolar correction on the unwrapped phase according to internal and external parameters of the virtual camera; performing stereo matching on the left and right unwrapped phases to obtain parallax of matching points corresponding to the left and right unwrapped phases; combining internal and external parameters of a virtual binocular, and converting parallax into depth information by using a parallax principle; and generating a dense point cloud picture of the object according to the three-dimensional space coordinates of the object to complete three-dimensional reconstruction of the object. According to the invention, the problem of high cost of a traditional binocular structured light three-dimensional reconstruction system is solved, and the problems of camera synchronization stability and gray scale difference of the three-dimensional reconstruction system are avoided.

The invention relates to a control plane deflection apparatus of a free-flight model. The control plane deflection apparatus comprises control plane assemblies, a rotating shaft block, a compression spring, and a rudder deflection control block. A left control plane and a right control plane are connected to a mounting hole of the same rotating shaft block by respective rudder shafts and bosses arranged at the tails of the rudder shafts and are screwed into circular holes of the rotating shaft block by bolts to fix the control planes and the rotating shaft block so as to prevent shedding of the control planes. The control plane assemblies and the rotating shaft block can rotate around the axes of the rudder shafts. A rotating shaft block angle control plane is arranged at the rotating shaft block; and a rotating shaft block blind hole is formed in the rotating shaft block. The compression spring is arranged in the rotating shaft block blind hole; and one end of the compression spring is abutted against the bottom of the rotating shaft block blind hole and the other end is fixed. A rudder deflection control plane is arranged at the rudder deflection control block; and the control plane deflection angle of the control plane can be adjusted by adjusting the height of the rudder deflection control plane. According to the invention, problems of small size of the wind tunnel free-flight model model and large difficulty of mechanism designing as well as a problem of difficult control plane deflectin triggering and angle controlling of the model during the wind tunnel free-flight support-free process can be solved.

The invention relates to the field of erecting machines for construction equipment and provides an overturning closed loop synchronous hydraulic system for an erecting machine against the problem that two overturning oil cylinders of an existing erecting machine cannot be synchronized in the presence of large eccentric loading or inner leakage. The overturning closed loop synchronous hydraulic system comprises a detection system, a regulating system and a control system. The detection system and the regulating system are electrically connected with the control system, the control system is electrically connected with a power supply, the detection system is used for detecting the angles of the two oil cylinders corresponding to overturning arms of the erecting machine, the regulating system is used for regulating the angles of the overturning arms of the erecting machine, and the control system is used for analyzing detection results of the detection system and controlling the regulating system to work. According to the overturning closed loop synchronous hydraulic system for the erecting machine, real-time detection, real-time feedback, real-time control and real-time regulation are performed through a closed loop detection feedback regulation control system, so as to guarantee that the overturning arms of the erecting machine are synchronous in real time.

The invention aims to provide a method and a device for realizing multi-person virtual interaction. According to the scheme, when one or more virtual users request to join in one or more virtual rooms; and establishing one or more long connections between the virtual reality device corresponding to the user and the server corresponding to the virtual room, and then, based on the long connection, providing one or more data services associated with the virtual room for the user, and based on a group corresponding to the long connection, synchronizing data information corresponding to the data services to other users in the group. Compared with the prior art, according to the invention, the long connection technology is applied; the time delay of data interaction and state synchronization between different users is reduced, the dependence on a message system is reduced, the reliability of data transmission is improved, the real-time synchronization of resource playing, action data and thelike of different users in the same room is ensured, and the experience of cross-space interaction of the users by using virtual reality equipment is improved.

The invention relates to a generator excitation device, and more particularly to a main and auxiliary generator ultra-wide-frequency excitation device of an AC transmission internal combustion locomotive. The main and auxiliary generator ultra-wide-frequency excitation device solves the problems that the ultra-wide-frequency excitation control only adopt a sampling hardware circuit or software for calculating and sampling, and the voltage and frequency sampling errors are big. The main and auxiliary generator ultra-wide-frequency excitation device adopts a method of combining hardware frequency measuring equipment with software calculation to perform synchronous detection in a cooperated manner, overcomes the problem of big sampling errors at high frequency, ensures the real-time synchronism of PMW control and an excitation power supply, realizes precise ultra-wide-frequency excitation control of main and auxiliary generators of the AC transmission internal combustion locomotive under high-frequency output, and is particularly suitable for a traction generating unit of a trunk line internal combustion locomotive.