71results about How to "Fix data loss" patented technology

The invention relates to a data asynchronization storage and access mechanism applied to an industrial control system. The data asynchronization storage and access mechanism comprises a real-time data-caching step of the industrial control system and a data reading step of the industrial control system. A memory database is adopted in the real-time data-caching step of the industrial control system and the data reading step of the industrial control system, a real-time data structure inside the memory database is a first-in first-out annular queue, a lengthening manner is adopted in a data item of the annular queue, a head pointer and a tail pointer are arranged, the head pointer points at a first byte of data, to be read, in the head of the annular queue, the tail pointer points to a next available empty byte of the written data in the tail of the queue. The data asynchronization storage and access mechanism is applied to data exchanging in the fields of wide area measuring, real-time trades, military monitoring and the like, and the data access can be asynchronous and delayed through caching and organizing the data via the memory database of the lengthening round-robin queue.

A method, apparatus, logic device, and storage system for power-fail protection are disclosed. The method includes: when a system power supply fails, supplying, by a battery, power to a south bridge chip (SBC), a non-volatile flash storage medium, an interface conversion circuit (ICC) between the SBC and the non-volatile flash storage medium and a memory; and transmitting unsaved data in the memory to the corresponding non-volatile flash storage medium via the ICC, by using an unused bus interface of the SBC. The ICC converts a bus interface of the SBC into a corresponding bus interface of the non-volatile flash storage medium. The embodiments of the invention can effectively solve problems of data loss in case of system power failure and short retention time, and realize protection operation in case of system power failure, convenient upgrading memory capacity, and saving system space, without adding cost and total capacity of battery.

The invention relates to an automobile CAN bus encryption method. The method includes: firstly enabling a sending node to recombine to-be-sent data in a CAN bus network into a plurality of data blocksaccording to an AES encryption algorithm block byte length requirement; adding a check mechanism to each data block and adding a check bit to the tail of the tail end data block; carrying out bit compensation on the tail end data block by utilizing random data; encrypting each data block by using an AES encryption algorithm to obtain each ciphertext data block; enabling the sending node to perform data segmentation on each ciphertext data block, set a time identifier and an order identifier and send the ciphertext data blocks to the receiving node through the CAN network; enabling the receiving node to receive each ciphertext data block and detect the integrity of each ciphertext data block; according to the detection result, confirming that that it is discarded that this time of receiving is completed or splicing and decryption are conducted after extraction is conducted according to the preset time identifier and the sequence identifier, carrying out verification in combination witha verification mechanism after decryption to confirm the effectiveness of data transmission. The data transmission efficiency is improved, and the safety of data information transmission on an automobile is guaranteed.

A method for node data reporting and instruction issuing based on LoRa Internet of Things comprises the following steps: step S1-1) the LoRa network node reports the data packet to the LoRa gateway according to the self-defined data format; Step S1-2) the LoRa gateway analyzes the data packet according to the self-defined data format, carries out integrity and correctness verification of each field and packet loss detection, and after the checksum detection is passed, a 64-bit LoRa gateway identification code is added into the data packet and sent to the MQTT server through the MQTT protocol;Step S1-3) the MQTT serv parses the data packet according to the self-defined data format, after passing the check and packet loss detection, encrypts all data units of the data packets, and then sends the data packets to the HTTP server through the MQTT protocol; Step S1-4) the HTTP server parses the data packet according to the self-defined data format, after the checksum packet loss detection is passed, decrypts all data units of the data packet, obtains the original data units, and then stores the data of each field of the data packet into the database.

The invention relates to a signal acquisition device and a method thereof. A geophone comprises a signal acquisition unit, a signal processing unit, a main control unit, a signal communication unit and a power supply; the signal acquisition unit comprises a tri-component acceleration sensor group, and various sensors are electrically connected with the signal processing unit and the main control unit respectively. The digital geophone consists of general-purpose chips with low price and stronger function without lowering performances to cause a circuit to be very compact, which greatly reduces failure rate of the system and acquisition cost and has very obvious economic benefit. Meanwhile, the geophone is provided with a portable lithium battery, a voltage detection circuit and a FLASH memory, which solves a problem of data loss caused by connecting wire failure or power failure and improves safety and reliability of data acquisition. The geophone can be used independently and serially connected with a plurality of geophones to form a seismic acquisition system.

The invention provides an internet bar cloud management system and an applied internet bar networking management method. The system comprises one or more internet bar service ends, a report service end connected with the internet bar service ends, a synchronous service end connected with the internet bar service ends, and a cloud end connected with the report service end and the synchronous service end. The internet bar service ends report local business data to the cloud end, and the internet bar service ends can be synchronized with the local business data reported to the cloud end by means of the synchronous service end, so that data consistency is realized. The internet bar service ends can be managed only by the cloud end, and business development of the internet bar service ends in different internet bars can be performed by data synchronization through the cloud end, so that the development of internet bar business is substantially facilitated, and the commercial value is improved.

The invention relates to a 1394 bus transaction layer-link layer data packet transmitting circuit and method. The circuit comprises an asynchronous transmission data cache region management module, an asynchronous transmission scheduling control module, an asynchronous transmission FIFO cache management module, an isochronous transmission data cache region management module, an isochronous transmission data scheduling control module, an isochronous transmission FIFO cache management module and a control and register management module. According to the 1394 bus transaction layer-link layer data packet transmitting circuit and method, transmission data cache regions are automatically managed, and whether errors occur on data packets in a transmission data channel can be monitored in real time, and asynchronous and isochronous transmission of communication data can be compatible. With the 1394 bus transaction layer-link layer data packet transmitting circuit and method adopted, the technical problem of data loss and instability of 1394 bus serial communication can be solved; large-scale data transmission can be realized; requirements for real-time performance and reliability of communication in application can be effectively satisfied; fault spread can be avoided; and the work of a system and the utilization rate of resources can be improved. The circuit and method have high fault tolerant ability.

The invention discloses a double network hot standby method. The party to which data are to sent, namely a data receiver, of a data sender adopts two network connection channels which both are in work state, data to be sent of the data sender is queued to be sent, a data sending module of the data sender takes out the data in sequence and sends the data to the two network connection channels; the data receiver receives the data simultaneously through the two network connection channels; and data transmission is not influenced when data receiving of any one of the two network connection channels is interrupted alone, and the data transmission is interrupted only after both the two network connection channels are interrupted. The method provided by the invention is simple and feasible and effectively and reliably solves the problems of data loss and repetition in double network data transmission treatment process, so that the time interval-less double network switching is realized, and the double network can be called interval-less switching double network.

The invention relates to a non-vehicle-mounted charger data transmission method, system, a BMS (battery management system) and a monitoring terminal. The non-vehicle-mounted charger data transmissionsystem comprises a non-vehicle-mounted charger, a battery management system, a full vehicle CAN bus, a vehicle-mounted remote monitoring terminal and a cloud server. Data of the non-vehicle-mounted charger is sent to the battery management system by the non-vehicle-mounted charger; the data of the non-vehicle-mounted charger sent by the non-vehicle-mounted charger is received and cached by the battery management system, and the data of the non-vehicle-mounted charger is sent to the full vehicle CAN bus; the cached charger data is transmitted to the cloud server by the vehicle-mounted remote monitoring terminal through wireless network; and the charger data of the vehicle-mounted remote monitoring terminal is collected by the cloud server in real time, and response messages are sent to thevehicle-mounted remote monitoring terminal by the cloud server. According to the non-vehicle-mounted charger data transmission method, system, the BMS (battery management system) and the monitoring terminal, a reliable guarantee for realizing remote monitoring of the data of the non-vehicle-mounted charger and real-time analysis of charging situations is provided.

The invention provides a remote real-time monitoring device and method for individual life support based on an intelligent terminal. The monitoring device comprises a vital sign collecting module, a positioning module, a data transmitting and forwarding module, a server and a monitoring module. Both the positioning module and the data transmitting and forwarding module are located on the intelligent terminal. The data transmitting and forwarding module is used for transmitting vital sign information, position information and personal information of a monitored person to the server. The server is used for transmitting original collected data to the monitoring module, a display module of the intelligent terminal and a database. The monitoring module is used for displaying the vital sign information of the monitored person in real time and plotting the position information on a GIS map. According to the remote real-time monitoring device and method, the individual geographic position can be positioned and tracked in real time, individual vital signs are accurately and effectively monitored remotely in real time, and the individual safety is ensured.

The invention discloses a cluster management method, device and system. The method comprises the steps: obtaining an operation request sent by a distributed consistency system in a cluster; and determining decision information for processing the operation request, and sending the decision information to an operation and maintenance management and control platform, wherein the decision informationis determined based on data consistency and availability of the distributed consistency system. The technical problem of data loss or service termination of the distributed consistency system caused by high error rate of manual operation of the cluster management mode of the distributed consistency system can be solved.

The invention discloses a quick fault-tolerant processing method for data-writing Redis failure. The method includes S1, adding a Redis service failed in play as a fault-tolerant task to a fault-tolerant to-be-processed queue; S2, acquiring a fault-tolerant to-be-processed task from the fault-tolerant to-be-processed queue, replaying the Redis service if the fault-tolerant to-be-processed task exists, adding one time in replaying the Redis service, continuously performing the S3, and performing the S4 if the fault-tolerant to-be-processed task does not exist; S3, judging whether replaying of the Redis service in the S2 is successful or not, if yes, storing the Redis service to a Redis server cluster, skipping to the S2 for continuous performance, and if not, adding the Redis service to the fault-tolerant to-be-processed queue and skipping to the S2 for continuous performance; S4, closing the Redis service. The task failed in processing is retried continuously till processed successfully, the problem about data loss caused by interruption of network connection or Redis service is effectively solved, and smoothness in service performance is guaranteed.

The invention discloses a network data acquisition and processing method and device, and the method comprises the steps of: S1, enabling a receiving end acquisition and processing unit to receive a heartbeat message transmitted by a transmitting end acquisition and processing unit, and extract a transmitting end timestamp in the heartbeat message; S2, when the difference between the local timestamp and the timestamp of the sending end exceeds a preset time difference threshold value, sending an exception request message to confirm that the sending end is in an exception state; S3, judging whether the receiving end is a main acquisition processing unit or not, if so, executing the step S4, and otherwise, executing the step S5; S4, setting an LAN port corresponding to the sending end to be in an unavailable state through the receiving end; and S5, setting the receiving end as a main acquisition processing unit, and setting the LAN port corresponding to the sending end to be in an unavailable state through the receiving end. The technical problem that in the prior art, faults caused by hardware problems, collecting and processing unit operating systems or software problems cannot be detected, and then data continues to be output to related LAN ports, so that data loss or network disconnection is caused is solved.

The present invention relates to a fiber bragg grating temperature measurement system of a communication machine room, and a communication machine room temperature detection method. The system comprises a broadband light source emitter, at least one optical fiber, at least one fiber bragg grating sensor arranged on the at least one optical fiber and a fiber grating processor. The broadband light source emitter is configured to emit a broadband light source to the at least one optical fiber; the at least one fiber Bragg grating sensor is suitable for being installed at temperature collection points in the communication machine room and is configured to perform reflection of the broadband light source propagated by the at least one optical fiber; and the fiber grating processor is configuredto determine the temperatures of positions where the at least one fiber bragg grating sensor is located according to the wavelength of the reflection optical waves of the at least one fiber bragg grating sensor. The fiber bragg grating temperature measurement system of the communication machine room, and the communication machine room temperature detection method have no detection blind areas, are good in timeliness, save manpower, reduce or avoid cabinet device electromagnetic interference in the communication machine room, and is high in accuracy.

The invention discloses a method for realizing data synchronization of main / standby metadata servers and an apparatus thereof, and is used for solving the problems that data synchronization has to depend on third party equipment in the prior art and the data consistency among main / standby metadata servers cannot be guaranteed when the third party equipment breaks down. The method includes the steps: when a router receives a file operation request sent from a user every time, transferring the received file operation request to a main metadata server and storing the file storage position information which is returned according to the file operation request of the main meta server on the local; and when an acquire request sent from a standby metadata server is received, determining that the main metadata server operates abnormally and sending all the currently locally-stored file storage position information to the standby metadata server according to the acquire request. By means of the method, based on the reliability of the router, and having no requirement for extra increase of third party equipment, the problem for data loss between the main metadata server and the standby metadata server is solved.

An apparatus and a method to apply 5G communication systems to IoT networks are provided. The apparatus includes technologies, such as a sensor network, machine type communication (MTC), and machine-to-machine (M2M) communication may be implemented by beamforming, multiple-input multiple-output (MIMO), and array antennas. Application of a cloud radio access network (RAN) as the above-described bigdata processing technology may also be considered to be as an example of convergence between the 5G technology and the IoT technology. The disclosure relates to a method and an apparatus for controlling network access in a next generation mobile communication system.

The invention provides a data transmission method and device, a server and a computer readable storage medium. The method comprises the following steps: receiving audio and video data for a video conference from at least two conference participating terminals, and sending the audio and video data to a first recording and broadcasting server in the at least two recording and broadcasting servers; if it is detected that the first connection with the first recording and broadcasting server is interrupted, establishing a second connection with a second recording and broadcasting server in the at least two recording and broadcasting servers; sending first audio and video data for the video conference received after the first connection is interrupted to a second recording and broadcasting server through the second connection; and if it is detected that the first connection is recovered from the interruption state to the connection state, controlling the first recording and broadcasting server to send second audio and video data for the video conference stored before the first connection is interrupted to a second recording and broadcasting server. According to the invention, the integrity of recorded videos can be ensured.

The invention discloses a processing method when a video server is congested, which is used for preventing message storm from being produced, and preventing accidents of the video server such as equipment halting caused by reaching processing bottleneck. The method comprises the following steps that: a video camera sends a first message to the video server; the video server analyzes an IP header from the first message when finding in a processing bottleneck state; an IP address of the video camera is acquired; the video server sends a backoff message to the video camera according to the acquired IP address; and after the video camera receives the backoff message, the video camera determines time delay duration according to a preset algorithm, and sends the first message to the video server again when the time delay duration is reached. The invention also discloses a device and a system for realizing the method.

The embodiment of the invention discloses a memory, which comprises a memory module, the memory module comprises a plurality of data blocks and at least one backup block, each data block comprises a plurality of low significant bit pages and a plurality of high significant bit pages, and each high significant bit page corresponds to one low significant bit page; and the control module is electrically connected with the storage module and is used for detecting that the writing command of the first low significant bit page corresponding to the first high significant bit page is different from the current writing command when the data of the current writing command is written into the first high significant bit page, and backing up the data of the first low significant bit page into the backup block. According to the memory provided by the embodiment of the invention, the problem of lsb page data loss caused by msb page power failure in the prior art is solved, the power failure is effectively prevented, the data of a user is protected, and the safety and stability of the memory are improved.

The invention belongs to the communication field and the circuit control field and particularly relates to a method and a system universal for power on and power off of various modules. The method includes: by an equipment system, lowering a power on signal pin level of a power on module into a low level, and keeping the low level to allow for power on of the module; and recognizing a power off module label, by the equipment system, raising a power off signal pin low level of a power off module into a high level, and using an AT instruction to shut the power off module to allow for power off of the same. By the method, the problems that programmers needs a large amount of time to debug duration of module power on and power off signal pin low levels and abnormal power off causes module data loss and damages the service lives of modules, a large amount time of programmers is saved, labor cost is reduced, and data safety and module service lives are guaranteed.

The present invention is method and system of automatically creating and managing remote terminal graphic user interface conversation. Into the remote graphic user interface protocol, are increased display attribute message, user's identity message, re-initializing message, conversation display, conversation service monitoring, user's identity confirmation, conversation management, graphic window activation, and graphic user interface conversation disconnection, cancellation and re-connection. The present invention makes the user managing mechanism of host operation system compatible with user's personal configuration, simplifies the management of remote terminal graphic user interface conversation, raises the utilization of host computer system CPU and memory, and raises the availability of remote graphic user interface.

The invention provides a remote control real-time transmission processing method for a large unmanned aerial vehicle. The remote control real-time transmission processing method comprises the following steps: S1, setting a sending end and a receiving end for communication to have the same clock period; S2, enabling the sending end to send data according to the set clock period; S3, enabling the receiving end to receive the data from the sending end, putting the received data into a cache region, after clock cycles arrive, carrying out data processing on the data in the cache region, and calculating the clock offset orientation Pn of the sending end and the receiving end in each clock cycle of the receiving end; S4, according to the calculated clock offset orientation Pn, judging the clock cycle speed of the sending end and the receiving end, and selecting to carry out data loss processing logic or delay processing logic according to a judgment result. According to the invention, the problem of data loss or time delay increase caused by clock period jitter and period deviation in asynchronous communication is solved.

The invention discloses a smart phone-based voice encryption system and its implementation method. When a user account is bound, the system control module realizes the input of the user account by calling the user interface control module to judge the validity of the input user account, and the server will verify the validity of the input user account. Send the SMS to the user account; realize the input of the SMS verification code, judge the correctness of the input SMS verification code, realize the user information input, and judge the legitimacy of the input user information; call the data sending and receiving module to communicate with the server to complete the user registration , call the user interface control module to wait for the user operation, and complete the binding of the user account; Account information modification. It also includes: a password module, and the invention solves the possible problems of data loss and privacy leakage.

The invention provides a method for processing a screen-locking password and a mobile terminal. The method comprises the steps of displaying an icon arrangement interface in a screen of the mobile terminal if a password processing command is detected when the mobile terminal is in a screen-locking state, wherein the password processing command includes a password retrieval command or a password resetting command, and at least two icons on a desktop of the mobile terminal are at least displayed on the icon arrangement interface; receiving an arrangement operation for the at least two icons, andarranging the at least two icons according to the arrangement operation for the at least two icons; and if the arrangement of the at least two icons satisfies a preset condition, carrying out corresponding password processing according to the password processing command. Through the method for processing the screen-locking password provided by the invention, the mobile terminal can be rapidly unlocked, and the problems that operations for unlocking of terminal equipment are complicated when a user forgets the screen-locking password and data loss exists are solved.

The embodiment of the invention provides a lock catch processing device and a lock catch processing method. The lock catch processing device comprises a device manager, a lock catch component and a lock catch controller, wherein the device manager is connected with the lock catch controller, and is used for obtaining an unlocking instruction or a failure instruction; the lock catch controller is connected with the lock catch component, and is used for driving the lock catch component to unlock corresponding FRUs (field replacement unit) in the unlocking instruction or the failure instruction after the device manager receives the unlocking instruction or the failure instruction. According to the embodiment of the invention, the problems about shutdown of the system and data loss due to the fact that other FRUs in normal operation are pulled out mistakenly when the FRUs with special serial numbers in a great number of FRUs with the same type and model are replaced in the prior art are solved, and the safety and reliability in unlocking operation by the lock catch processing device are improved.

The invention relates to a method for encrypting an automobile CAN bus. Firstly, a sending node reassembles the data to be sent in the CAN bus network into several data blocks according to the block byte length requirements of the AES encryption algorithm, and adds a verification mechanism to each data block. And add a check digit at the end of the end data block, and then use random data to fill the end data block, use the AES encryption algorithm to encrypt each data block to obtain each ciphertext data block, and then send the node to each ciphertext data After dividing the block into data and setting the time mark and order mark, it is sent to the receiving node through the CAN network. The receiving node receives each ciphertext data block and checks its integrity. The time mark and the order mark are set to be extracted, spliced ​​and decrypted, and after decryption, combined with the verification mechanism for verification to confirm the validity of the data transmission, which improves the efficiency of data transmission and ensures the security of data information transmission on the car.

The invention provides an interactive wireless communication system based on a general processor and a ZYNQ processor. The system comprises a man-machine interaction module, a central processing module and an internal interconnection module; the man-machine interaction module is interconnected with the central processing module and is responsible for running a man-machine interaction program, receiving service data and the running state of the module from the central processing module, configuring relevant parameters through a touch screen and issuing the relevant parameters to the central processing module so as to input and output audio data and store and display the data; and the central processing module is interconnected with the man-machine interaction module and is responsible for wireless transceiving function, wireless channel parameter configuration and storage, communication waveform switching and storage and data communication with the man-machine interaction module. According to the invention, a ZYNQ chip is used for integrating the ARM processor and an FPGA logic programming unit, the complex bus connection is avoided, peripheral circuit design is simplified, and theFPGA logic unit expands various communication interfaces and can be directly mounted on the ARM processor.

The invention discloses an electronic cigarette power circuit and an electronic cigarette. The electronic cigarette power circuit comprises a power module, a power failure detection circuit, an energystorage circuit and a control circuit, wherein voltage of a detection end of the power failure detection circuit becomes zero when the power module has power failure; a power input end and a power output end of the power failure detection circuit are connected with each other; the energy storage circuit is used for outputting power to the control circuit through the power failure detection circuit; the control circuit starts carrying out turning-off control of the electronic cigarette, for example, turning off atomizer and storing parameters of the electronic cigarette; the control circuit completes turning-off work before the end of discharging of the energy storage circuit after discharging for preset time, so that the problems that data is lost and damaged and a hardware circuit is notnormally turned off after the electronic cigarette has power failure are solved; the service life and the stability of the electronic cigarette can be improved.

The invention is suitable for the technical field of robots, and provides a robot shutdown control method and device and a robot. The method comprises the steps that when a shutdown instruction givenby a user is received, the states of peripheral devices are obtained; if the states of the peripheral devices are that power supplies are not shut down, the shutdown instruction is sent to the peripheral devices, and the peripheral devices are controlled to shut down the power supplies; if the states of the peripheral devices are that the power supplies are shut down, the shutdown instruction is sent to a network center device so as to indicate the network center device to shut down; and after all the peripheral devices shut down and the network center device shuts down, a main control deviceexecutes a shutdown operation. According to the method and device and the robot, the problem of data loss caused by shutdown failure when the robot has the multiple of peripheral devices is solved; and the orderly shutdown of a robot system is realized.