36results about How to "Avoid sync failures" patented technology

The invention relates to one time simultaneous method and system for multi-point visual point, which comprises the following steps: a, using network time agreement to process all device simultaneous operations; b, separately starting one collection program on collectors for each camera; c, visual collection program monitors control order from servo; d, the servo detects local network maximum reverse time; e, the servo adds current system time and the maximum reverse time as pre-set collection time sent to each collection program; f, collection program compares the current system time and pre-set collection time, if it supers then starting visual data collection.

The invention discloses a synchronized method of a network disk system, terminal equipment and the network disk system. The synchronized method comprises the steps as follows: detecting a network disk directory entry of a client of the network disk system and / or a plurality of change operations of the network disk directory entry of a server of the network disk system; converting the plurality of change operations into a plurality of synchronization tasks, wherein the plurality of synchronization tasks are used for realizing synchronization between the disk directory entry of the client and the disk directory entry of the server; determining dependency relationship among the plurality of synchronization tasks; distributing the synchronization tasks which do not have the dependency relationship in the plurality of synchronization tasks to different threads to carry out parallel execution. According to the technical solution of the invention, the synchronized method could improve synchronizing efficiency of the network disk system and avoid synchronization failures brought by logical errors.

The apparatus thereof comprises a main control module and a distributing module. The method thereof includes: a) said distributing module reports a message not capable of routing by itself to said main control module; b) in term of said message, the main control module looks up ARP table; if a corresponding list item is found, and then synchronizing ARP data with said distributing module. The invention can make ARP data in distributing equipment keep global consistency. Besides, the invention determines the consistency of ARP data based on the message forwarding state so as to avoid loss of synchronization data or synchronization failure caused by adding ARP list item using software.

The embodiment of the invention discloses a synchronization method and device. The synchronization method comprises the steps that a first terminal acquires at least two ping-pong time delays between the first terminal and a second terminal; the first terminal judges whether the multiple ping-pong time delays meet the channel stabilizing condition; the first terminal estimates the channel transmission time delay between the first terminal and the second terminal if yes; the first terminal sends a synchronization control signal to the second terminal, wherein the synchronization control signal is used for making the second terminal execute synchronization operation after the synchronization control signal is received by the second terminal; the first terminal executes the synchronization operation after a time delay which is equal to the channel transmission time delay after sending the synchronization control signal. By estimating the channel transmission time delay between the terminals, synchronized control of the terminals is achieved according to the channel transmission time delay.

The disclosed data increment synchronization method between network management system (NMS) and net element management system (EMS) comprises: first, NMS sends increment synchronization request to EMS to require latter transmit data increment; EMS decides whether accepts the synchronization request and returns success or failure response to NMS; for success response, the EMS reports the data increment to NMS. This invention reduces data quantity and flow load, and applies asynchronic way to avoid failure led overtime waiting.

The present invention relates to a system and an apparatus for synchronization between heterogeneous periodic clock domains, a synchronization failure detecting circuit, and a data receiving method. The synchronization system between heterogeneous periodic clock domains including a sender and a receiver operated according to heterogeneous periodic first clock and second clock, respectively, includes: a sender that outputs a prediction clock obtained by delaying the first clock for a first time; and a receiver that predicts success and failure of synchronization between the first clock and the second clock by using the prediction clock and selectively delays the second clock for a second time according to the predicted results to synchronize the second clock with the first clock.

A current sharing control method for parallel intelligent rectifier bridges is disclosed and applied to current sharing and rectification operation for a plurality of parallel three-phase silicon controlled intelligent rectifier bridges. Each intelligent rectifier bridge sends sampling data of a previous power frequency period to an adjusting device after receiving a zero-crossing synchronization signal, the adjusting device sets synchronization period timing after receiving first sampling data, and the synchronization period is limited to be less than one half of a power frequency period; in a set synchronization period, as for all the intelligent rectifier bridges, the adjusting device receives sampling data before replying control data for next power frequency periods corresponding to the intelligent rectifier bridges in a one-by-one manner, and each intelligent rectifier bridge sends sampling data only once in one power frequency period. Via adoption of the current sharing control method output currents of the parallel intelligent rectifier bridges can be equalized in an accurate manner, and a possible problem that various output pulses are not synchronous in parallel intelligent rectifier bridges can be effectively prevented. System operational reliability can be substantially raised.

The embodiment of the present invention relates to a method for sending a synchronization signal, a detection method and a device. The method for detecting a synchronization signal includes: determining the current state, and the state includes a state that has just been powered on or a state that has just been converted from a sleep state to a wake-up state or connected state; and / or, determine the coverage level of belonging, and the coverage level includes a near coverage level or a far coverage level; according to the determined current state and / or the coverage level of attribution, select the first mode or the second The first method includes receiving and detecting the synchronization signal according to each subframe containing one synchronization signal; the second method includes receiving and detecting the synchronization signal according to each subframe containing multiple synchronization signals. It can be seen from the above that, in the embodiment of the present invention, it is possible to quickly synchronize the far-coverage terminals.

The invention provides a data synchronizing method and device of a bank mainframe and an individual computer, and relates to the technical field of bank system data processing. The method includes thesteps of dividing trade data into real-time trade data and non-real-time trade data according to the business types of the trade data of all bank accounts in the bank mainframe, combining the real-time trade data and the non-real-time trade data of the same bank account according to the business type of the trade data to form corresponding real-time synchronous trade data and non-real-time synchronous trade data of the same bank account, synchronizing the real-time synchronous trade data to the individual computer within a preset first time duration through a preset synchronizing tool, and synchronizing the non-real-time synchronous trade data to the individual computer within a preset second time duration through the preset synchronizing tool, wherein the second time duration is later than the first time duration.

The invention provides an air interface synchronizing method between a Femto device and a macro station. The method comprises: the Femto device determines an air interface synchronous object macro station, and reports the macro station to a home eNodeB management system (HMS); the HMS obtains a transmission delay (T-delay) between the macro station and the Femto device and sends T-delay to the Femto device; the Femto device detects the moment TRX of receiving a macro station beacon channel, and computes a timing border of the beacon channel of the Femto device to serve as TRX-T-delay according to the moment and the T-delay, thereby determining the timing synchronous relation of the Femto and all other channels. By applying the air interface synchronizing method, the success rate of synchronizing the TD-SCDMA (time-division-synchronization code division multiple access) Femto and an outdoor macro station through an air interface detection manner can be improved.

The invention relates to the field of wireless communication, and discloses a synchronization method and device between base stations. The method includes the steps that when the local base station reaches the search time of synchronization source base stations, whether the synchronization source base station meeting the synchronization condition exists in the adjacent base stations or not is judged; if the synchronization source base station meeting the synchronization condition exists, the synchronization source base station meeting the synchronization condition is switched into the target synchronization source base station of the next base station synchronization; when the local base station reaches the synchronization time, the local base station and the target synchronization source base station are synchronized. Through the synchronization method, synchronization failure caused by changes of a synchronization source self or influences of environmental factors can be effectively prevented, and reliability of base station synchronization is improved.

The invention relates to the technical field of stroboscopic controllers, and discloses a time-sharing stroboscopic controller control system, which comprises a stroboscopic controller module used for receiving an external trigger signal, generating a multi-time-sequence light source control signal according to the signal, and controlling the lightening time, the extinguishing time, the lightening sequence and the brightness of a light source module; the invention also discloses a control method of the time-sharing stroboscopic controller, which comprises the following steps of: S1, receiving an external trigger signal through the stroboscopic controller module, and starting a light source lightening process; and S2, the stroboscopic controller module generates a lighting time sequence control signal of the light source module according to the external trigger signal. Through a high-precision time synchronization technology, a closed-loop calibration mechanism and a multi-time-sequence multi-channel control design, the problems of inaccurate synchronization of multi-device trigger signals, error accumulation and inflexible cooperative operation of a light source and a camera are solved, and the adaptive capacity and the system reliability in a complex detection scene are remarkably improved.

The invention relates to the technical field of railway dispatching systems, in particular to a real-time data synchronization method. The method comprises the following steps of when the state data of a first node changes, actively sending the changed state data to a second node; enabling the second node to regularly request the first node to send the first all state data of the first node, and when the state data is updated, enablilng the second node to update the local data according to the first all state data; and enabling the first node to send the second all state data of the first nodeto the first node regularly, and when the state data is updated, enabling the second node to update the local data according to the second all state data. According to the present invention, the synchronization is carried out in a two-way interaction mode, not only the real-time performance of data synchronization is guaranteed, but also the synchronization failures caused by the data loss causedby the network packet loss are avoided, it can be guaranteed that the state change data is synchronized, the accuracy of the data finally fed back to a user is guaranteed, and the misoperation of theuser is avoided.

The present invention relates to a kind of time synchronization method and system for multi-viewpoint video collection, and the method of the present invention comprises the following steps: (1) use the network time protocol to synchronize the system time of all devices; Start a video acquisition program respectively; (3) the video acquisition program monitors the control command from the synchronization server; (4) the synchronization server detects the maximum round-trip time of the local area network; (5) the synchronization server adds the current system time and the maximum round-trip time of the local area network as an estimated The acquisition time is sent to each video acquisition program; (6) The video acquisition program cyclically compares the current system time with the expected acquisition time, and starts video data acquisition if it exceeds. The invention effectively avoids the synchronization failure caused by too short waiting time delay, and at the same time, can avoid the unprincipled long waiting of the video acquisition machine, and the time precision can reach millisecond level. The method of the invention can be widely used in various multi-camera-based multi-viewpoint video data collection and transmission systems.

The present application discloses a data synchronization method, device, computer equipment and storage medium. The data synchronization method includes: pulling a database log of an index database in real time through a log pulling component, and analyzing the index information of the data to be synchronized from the database log ; Obtain the node status information of each server node in the multiple server nodes, and determine a number of accommodating data types of each server node and the accommodating data amount of each accommodating data type in the several accommodating data types according to the node state information; obtain the corresponding index information According to the index information, file attribute information, a number of accommodated data types and accommodated data amount, the target file data is extracted from the file storage server; the target file data is synchronized to the file index server. The present application can improve the real-time performance of data synchronization, and can avoid the problem of important data synchronization failure caused by node status.

The invention provides a synchronization source determination method and device based on a D2D communication technology, a terminal and a storage medium. The method comprises the following steps: determining whether a synchronization source exists in a coverage area of a cellular network based on a plurality of broadcast signals acquired by a current user terminal; if the synchronization source does not exist in the coverage area of the cellular network, determining a plurality of candidate user terminals corresponding to the current user terminal outside the coverage area of the cellular network and synchronization parameters corresponding to the plurality of candidate user terminals according to the plurality of broadcast signals, wherein the synchronization parameter corresponding to any candidate user terminal comprises at least one of mobile state information, electric quantity information and the number of peripheral user terminals; sorting the plurality of candidate user terminals; determining at least one synchronization source in the plurality of candidate user terminals based on the sorting processing result. According to the method disclosed in the embodiment of the invention, the problem of poor synchronization processing efficiency in the prior art is solved through the synchronization parameters.

The invention discloses an agent-based information resource directory synchronization method, comprising: deploying an information resource directory node in each organization domain, and deploying a directory synchronization agent node on a gateway server of each organization domain; when the first organization domain When data changes occur in the information resource directory node, the operation message is sent to the directory synchronization agent node, and the directory synchronization agent node sends the synchronization message to the directory synchronization agent node of the second organization domain; when the directory synchronization agent node of the second organization domain receives When synchronizing messages, judge whether to synchronize with the first organization domain according to the synchronization message; if not, the directory synchronization proxy node of the second organization domain pulls the changed information resource metadata to update the information resource directory node. By adopting the above-mentioned method, it is possible to realize the direct synchronization of the information resource directory mesh, break through the bottleneck limitations of the synchronization server performance and load in the central synchronization method, and avoid the synchronization failure problem caused by the destruction of the synchronization server.

The application provides an overhead transmission line strain clamp airborne X-ray flaw detection communication control system, which comprises an X-ray flaw detection imaging device and a long-distance communication device, wherein the X-ray flaw detection imaging device comprises a ground control terminal and an X-ray machine and an imaging plate carried on an unmanned aerial vehicle; the ground control terminal is in communication connection with the X-ray machine and the imaging plate through the long-distance communication device, is used for acquiring real-time state parameters of the X-ray machine and the imaging plate, and generates an X-ray exposure instruction according to the real-time state parameters of the X-ray machine and environmental parameters; generates an imaging plate acquisition instruction according to the real-time state parameters of the imaging plate and the network delay between the ground terminal and the X-ray machine, realizes real-time optimization imaging of the X-ray machine under complex working conditions, realizes identification of a strain clamp defect type and a defect grade based on special defect identification rules of the strain clamp and X-ray images, and improves reliability and safety in an airborne X-ray flaw detection operation process.

The invention discloses a system configuration data management method based on block chain and smart contract, which relates to the field of block chain system. The method steps of the present invention are: (1) Writing configuration data into the account book: writing the configuration data into blocks of the blockchain network to form a decentralized configuration data account book. (2) Network nodes synchronize ledger data: all information nodes obtain and save a copy of the ledger from nearby nodes through the P2P protocol. (3) Network nodes read configuration data in the ledger: each information node directly reads a copy of the ledger to obtain configuration data. (4) Update configuration data in batches through smart contracts. The present invention can effectively avoid information node configuration data errors caused by network communication and malicious tampering, and can also greatly simplify the operation of updating configuration data for a large number of information nodes. The method is simple and the entire system process is safe and stable. , Accurate characteristics.

The catalytic reaction module comprises a supporting frame, a plurality of supporting plates are arranged on the supporting frame, and the supporting plates are arranged on the supporting frame; a reaction box is arranged on each supporting frame in a sliding manner, and a locking assembly matched with the reaction box is further arranged on each supporting plate; the reaction module further comprises an air inlet pipe and an exhaust pipe, one end of the air inlet pipe is communicated with an external air source, and the other end of the air inlet pipe is connected with the inlet end of each reaction box in parallel; one end of the exhaust pipe is connected with the hydrogen storage device, and the other end is connected in parallel with the outlet end of each reactor; a hydrogen sensor and a flow sensor are also arranged at the outlet end of each reaction box and are electrically connected with the controller respectively; independent packaging of the catalyst is achieved through the modularized reaction box, the catalyst can be replaced by replacing the whole reaction box, the reaction box can be filled with the catalyst again, reutilization is achieved, and the replacement efficiency of the catalyst is effectively improved.

The invention discloses a method for realizing time synchronization of an SNTP client. The method comprises the following steps: configuring an sntp client; judging a channel; obtaining a DNS address and a device of the channel wan interface; entering a time synchronization server cycle; obtaining a DNS resolution time server; if the analysis fails, taking the next time server, cycling the operation until the analysis succeeds, and obtaining the IP; conducting connect connection, if connection fails, taking the next time server, and cycling operation until IP connection succeeds; and carrying out time synchronization by adopting a select blocking interval, if synchronization fails, quitting circulation, and taking a second time server. According to the method, synchronization failure of a single time server is avoided, and the method is provided with main and standby servers and supports five ntp time servers at most. Interval synchronous time synchronization is supported, at present, power-on first time synchronization and unfixed interval synchronous time synchronization are mostly adopted, and interval time synchronization can be better maintained.

The embodiment of the invention discloses a data synchronization method and device, electronic equipment and a computer readable medium. A specific embodiment of the method comprises the following steps: in response to successful connection with a target database, receiving data synchronization task type information; acquiring to-be-synchronized data corresponding to the data synchronization task type information from the target database; according to a concurrent execution type, synchronizing the to-be-synchronized data to a backup database, wherein the backup database is used for backing up data in the target database, and the concurrent execution type represents a mode of synchronizing the to-be-synchronized data to the backup database. According to the embodiment, the data synchronization efficiency is improved, and the waste of bandwidth resources is reduced.

The invention discloses a multi-terminal control right management method and system, and the method comprises the following steps: matching control elements of other terminals according to a control element trigger signal when any terminal outputs the control element trigger signal, removing the control right of the matched control element, and keeping the control right of the unmatched control element. The method has the advantages that it is ensured that the same function of the same device cannot be controlled by multiple terminals, signal conflicts are avoided, the safety of the controlled device is ensured, control elements with different functions in other terminals are reserved, a user can still control other functions of the device through other terminals, and the user experience is improved. The flexibility of multi-terminal control is kept under the condition of avoiding multi-terminal control conflicts, and the user experience is improved.

The present application provides a synchronization source determination method, device, terminal and storage medium based on D2D communication technology. The method includes: determining whether there is a synchronization source in the coverage area of ​​the cellular network based on multiple broadcast signals obtained by the current user terminal; if there is no synchronization source in the coverage area of ​​the cellular network, determining the coverage area of ​​the cellular network based on multiple broadcast signals Multiple candidate user terminals corresponding to the current user terminal and synchronization parameters corresponding to multiple candidate user terminals, the synchronization parameters corresponding to any candidate user terminal include at least one item of mobile state information, battery information, and the number of surrounding user terminals ; Perform sorting processing on multiple candidate user terminals; determine at least one synchronization source among the multiple candidate user terminals based on the sorting processing results. The embodiment of the present application solves the problem of poor synchronization processing efficiency existing in the prior art through synchronization parameters.

The invention relates to the field of wireless communication, and discloses a synchronization method and device between base stations. The method includes the steps that when the local base station reaches the search time of synchronization source base stations, whether the synchronization source base station meeting the synchronization condition exists in the adjacent base stations or not is judged; if the synchronization source base station meeting the synchronization condition exists, the synchronization source base station meeting the synchronization condition is switched into the target synchronization source base station of the next base station synchronization; when the local base station reaches the synchronization time, the local base station and the target synchronization source base station are synchronized. Through the synchronization method, synchronization failure caused by changes of a synchronization source self or influences of environmental factors can be effectively prevented, and reliability of base station synchronization is improved.

The embodiment of the invention discloses a GPS signal-based base station signal synchronization method, device, base station equipment and storage medium. The method includes: receiving a GPS signal and confirming the missing time of the GPS signal; calculating a frame offset adjustment value according to the GPS signal; calculating an adjustment average value and an average adjustment interval according to the frame offset adjustment value; judging whether the missing time is greater than a preset time threshold; If the time is less than or equal to the preset time threshold, the frame offset adjustment is performed according to the adjusted average value, the average adjustment interval, and the missing time; if the missing time is greater than the preset time threshold, the frame offset adjustment value is cyclically used for adjustment. The base station signal synchronization method based on the GPS signal provided by the present invention can perform GPS synchronization stably for a long time under a weak GPS signal, and has high synchronization precision.

The invention discloses a rotating shaft mechanism of a flexible screen. The mechanism is used for being arranged at an overturning and folding part of the flexible screen, can be bent along with theoverturning and folding of the flexible screen, and comprises a plurality of rotating shaft chain belts which are arranged side by side at intervals, and two connecting shafts for fixedly connecting the rotating shaft chain belts, the two ends of the first rotating shaft chain belt and the two ends of the last rotating shaft chain belt are fixed to the two ends of the head positions of the two connecting shafts respectively to form a rectangle. The four rotating shaft gear pieces are arranged on the rotating shaft chain belt and engaged together through the gears, so that when the rotating shaft mechanism is bent, the four rotating shaft gear pieces are matched with one another to compensate for the length variable of the bent rotating shaft; the phenomenon that the rotating shaft and theflexible screen cannot be synchronized due to the fact that the length of the rotating shaft is shortened after the rotating shaft is bent is avoided, in the bending process of the rotating shaft, thefour rotating shaft gear pieces are matched to thin the rotating shaft, and the phenomenon that the rotating shaft mechanism is damaged and the flexible screen fails due to mutual extrusion of gearsis avoided.

The embodiment of the invention discloses a synchronization method and device. A synchronization method includes: the first terminal obtains at least two ping-pong delays between the first terminal and the second terminal; the first terminal judges whether the plurality of ping-pong delays meet channel stability conditions; if so, The first terminal estimates a channel transmission delay between the first terminal and the second terminal; the first terminal sends a synchronization control signal to the second terminal, and the synchronization control signal is used for the second terminal The two terminals perform a synchronization operation after receiving the synchronization control signal; and the first terminal performs a synchronization operation with a delay equal to the channel transmission time delay after sending the synchronization control signal. The embodiment of the present invention realizes the synchronization control between terminals by estimating the channel transmission time delay between terminals, and according to the channel transmission time delay.