36results about How to "Avoid unrecoverable" patented technology

The embodiment of the invention discloses a distributed storage method and device, computer equipment and a storage medium. The method comprises the steps of grouping a to-be-stored file to form multiple data groups; forming at least three data fragments from all the data groups, wherein each data fragment comprises part of data groups, and each data group is added to at least two data fragments;distributedly storing all the data fragments in distributed storage nodes; recording a corresponding relationship between the data fragments and the data groups, and a corresponding relationship between the storage nodes and the stored data fragments; deleting the local to-be-stored file. According to the technical scheme, a user conveniently stores files in a distributed network to lower the storage cost, the privacy and safety of the stored files can be effectively improved, and thus an attacker is prevented from restoring original files.

The invention provides a disk reconfiguration method based on a RAID and a related apparatus. The disk reconfiguration method comprises the steps that distribution of priorities is conducted on services, then the services are stored in disk blocks, due to different service priorities of the services stored in the disk blocks, when reconfiguration is conducted, the disk blocks with the higher service priorities are preferably selected to be reconfigured, data corresponding to the services with the higher service priorities can be reconfigured in time, and the problem that due to the fact that key recovery data are lost when a disk is abnormal, a system has a fault and cannot be recovered is solved.

The invention discloses a test method and device of a Linux operating system, wherein the method comprises the following steps of: S101, configuring a test module in a first operating system under the condition that the first operating system is started to obtain a second operating system, wherein the test module is used for testing the second operating system; S103, testing the second operating system by the test module according to preset test parameters; and S105, after the test is finished, restoring the second operating system according to the first operating system which is backed up in advance. Through the test method and device, compiling complex test programs according to different operating systems is not needed, the test difficulty is lowered, and test universalization is realized; in addition, a changed operating system can be restored after the test is finished, so that the problem that a file is damaged and cannot be restored in the test process can be avoided, and the test reliability can be improved.

The invention discloses a communication method and a communication device for parallel query of clustered databases. The communication method comprises the following steps: dividing query results coming from query nodes to obtain division blocks; transmitting the division blocks to a target node in an independent data file form; under the condition of transmitting all the data files to the target node, performing data merging on the data files on the target node. Through the transmission of the query results in an independent data file form, the query results are still saved in a magnetic disk when the data nodes or networks fail, so that the problem that communication data between the database nodes is lost and not easy to recover when the data nodes or the networks fail is avoided.

The invention discloses a battery heating control device and a heating control method. The heating control device comprises at least three heating modules, at least three temperature detection modules, a control module and first switches, wherein the heating modules are in one-to-one correspondence with battery cell groups, and the heating modules heat battery cells in the corresponding battery cell groups when being started; the temperature detection modules are in one-to-one correspondence with the battery cell groups, and the temperature detection modules are used for detecting a real-timetemperature of the battery cells in the corresponding battery cell groups and generating temperature detection signals; the first switches are arranged corresponding to the heating modules; and the control module adjusts a starting state of the corresponding heating modules through the first switches according to the temperature detection signals and a received external power supply signal, and adjusts heating power of the corresponding heating modules through the first switches according to the received temperature detection signals so as to make a temperature difference value between the battery cell group with a maximum temperature and the battery cell group with a minimum temperature be less than or equal to a set difference value. Through the technical scheme of the invention, consistency of the battery cell temperatures is improved.

The invention relates to a method for guaranteeing the reliability of backup data and a data backuping method. The method for guaranteeing the reliability of the backup data comprises the steps of cutting data of a backup object into data blocks with MD5 (Message-Digest Algorithm5) check values; realizing real-time check and periodic check on the basis of the MD5 check values; and carrying out repair attempt on the backup data on the basis of check results, wherein the real-time check is to carry out MD5 check on the MD5 check value of each data block during each backup to judge whether the backup data is abnormal or not; the periodic check is to carry out MD5 check on all the data blocks at all time points of the backup object according to a set period to judge whether all the time pointsof the backup object are reliable or not; and the repair attempt is to rewrite the damaged data blocks in the backup data and repair the unreliable time points. Compared with the prior art, the method provided by the invention has the advantages of greatly increasing the availability and reliability of the backup data and the like.

The invention discloses a pressure switch and a refrigerating system comprising the same. The pressure switch comprises an outer shell, a first plugging piece, a second plugging piece, an elastic piece, a push rod, a membrane and a limiting member, wherein the first plugging piece and the second plugging piece are arranged inside the outer shell in a spaced manner, and a static contact is arranged on the first plugging piece; the elastic piece is arranged on the second plugging piece, one end of the elastic piece is connected with the second plugging piece, the other end is provided with a moving contact, and a second end of the elastic piece is movable so that the moving contact can be in contact with or separated from the static contact; the push rod is arranged inside the outer shell in a movable manner for pushing the other end of the elastic piece to move; the membrane is arranged inside the outer shell in a telescopic manner, and at least part of the membrane is pressed against the push rod for pushing the push rod to move; and the limiting piece is arranged inside the outer shell for limiting telescopic distance of the membrane. According to the pressure switch, the compression resistance of the pressure switch is improved, the application range of the pressure switch is enlarged, and the production efficiency is increased.

The invention provides a cloud sea OS virtualization platform backup and recovering method. The cloud sea OS virtualization platform backup and recovering method particularly comprises the steps: setting up a cloud sea OS platform, configuring the cloud sea OS platform, creating a virtual machine, installing an OS on the virtual machine, selecting a physical server on the cloud sea OS platform, enabling backup software which refers to backup software based on the iVDP protocol to be installed and configured on the physical server, enabling a device backup strategy to be the manual backups, conducting the manual backups on the cloud sea OS virtualization platform, manually deleting the virtual machine of the cloud sea OS virtualization platform after the backups is completed, and logging in a management interface of the backup software to select and recover a backup file when the cloud sea OS virtualization platform is required to be recovered. Compared with the prior art, the cloud sea OS virtualization platform backup and recovering method has the advantages of being capable of effectively guiding a manufacturer, a user and a data centre operation maintenance worker to back up and recover the cloud sea OS virtualization platform, guaranteeing the continuity of a service system, and being high in practicability.

The invention discloses an application method of a block chain technique to a secondary water supply facility. The secondary water supply facility comprises a plurality of secondary water supply pumprooms, each secondary water supply pump room comprises a community monitoring central control room and a safe water tank, each community central control room is provided with a local memory, the secondary water supply pump rooms serve as cloud nodes, all data corresponding to the local memories are uploaded to a cloud end through a network to perform cloud storage, data corresponding to all cloudnodes except for local cloud nodes are simultaneously backed up by the cloud nodes by the aid of the network and the block chain technique, and the local memories and the data stored by the cloud endsare encrypted. According to the method, an anti-terrorism security architecture of key data in secondary water supply process is achieved by the aid of the block chain technique, wherein the key datacannot be amended and destroyed and can be recovered and traced, data safety is improved, and the method avoids the problem that the data cannot be recovered due to unrecoverable terrorist attack.

The embodiment of the invention discloses a web page tamperproof method and a device. The method comprises the following steps: receiving a file operation request for a target web page file; monitoring whether to access an operation table corresponding to the target web page file; if yes, judging whether the file operation request is a web page tampering operation request; if so, refusing to respond to the file operation request. By applying the embodiment of the invention, the risk that the web page file cannot be recovered after being tampered with can be avoided.

The embodiment of the invention provides a data management method and device, electronic equipment and a storage medium. The data management method includes: detecting whether the to-be-managed data table in the database meets a preset filing condition or not; if yes, modifying the pointing direction of a data table pointer pointing to the to-be-managed data table from the to-be-managed data tableto a preset standby data table corresponding to the to-be-managed data table, and performing filing processing on the data stored in the to-be-managed data table, and performing defragmentation processing on the to-be-managed data table after all the data stored in the to-be-managed data table is subjected to filing processing. According to the method, before data in the to-be-managed data tableis archived, the pointing direction of the data table pointer pointing to the to-be-managed data table is modified into the corresponding alternative data table, so that the influence on data writingduring subsequent archiving processing and fragmentation processing is avoided, and the data can be normally written into a database.

The invention provides a cloud resource pool management system and method. The system comprises production VC, at least one production VC is deployed in each data center, and the production VC is usedfor managing a service virtual machine of the data center; and the management VC is used for uniformly managing and scheduling all production VC. According to the embodiment of the invention, the method comprises the following steps: through two levels of management architecture, the production resources and the service virtual machines are managed by the management VC, and high availability is provided for the service virtual machines for producing VC, so that unified management and scheduling of a resource pool are realized, meanwhile, VC distributed in a plurality of data centers is subjected to unified management, the management efficiency of the resources is improved, and the operation and maintenance capability of the cloud resources is improved.

Embodiments of the invention disclose a mobile terminal information confidential method and a mobile terminal. The method comprises: in an encryption function opening state, determining a triggering condition of switching to a new user mode is satisfied; and after the triggering condition of switching to the new user mode is satisfied, switching to the new user mode, wherein user information of the mobile terminal cannot be called in the new user mode. Since the user information in the mobile terminal cannot be called in the new user mode, the user information cannot be leaked under the conditions of the loss of the mobile terminal (such as a mobile phone) and the like, thereby enabling the user information of the mobile terminal to be confidential, and improving reliability of the mobile terminal. Moreover, the confidential mode for the user information of the mobile terminal just enables the user information not to be called instead of being deleted so as to avoid the problem that the information is difficult to recover after being deleted by mistake.

The embodiment of the invention discloses a mileage backup method and device and a vehicle, and relates to the technical field of automobile electronics, by adopting the backup method, a diagnostic instrument is not needed, the operation is convenient, and the problem that the mileage of spare parts is mistakenly backed up to cause unrecoverability when a replacement mode is used for troubleshooting in the market can be avoided. The mileage backup method comprises the steps that after a vehicle is powered off, the controller locally stores instrument mileage data sent by an instrument when thevehicle is powered on as controller mileage data; after a vehicle is powered on, a controller sends a mileage backup signal to an instrument when receiving a trigger signal of a key with a mileage backup activating function and sends locally stored mileage data of the controller to the instrument, and then the instrument stores the mileage data, sent by the controller, of the controller accordingto the mileage backup signal.

The invention discloses an audit data security management and control system. The system comprises an audit client terminal, the Ethernet switch and a data security management and control server; thedata security management and control server comprises a comprehensive database, a database backup unit, Periodic deletion module, Date information capturing module, a user information capturing module, wherein the audit client terminal comprises a retrieval query module, a data graph conversion module, a data encryption protection module and an addition, deletion and modification module, the auditclient terminal comprises a user input module, a user database, an information data unit, a security verification module, a log recording unit and a transmission unit, and the audit client terminal is connected with the Ethernet switch through a wire. The audit data security management and control system has an information data security backup function, and premature historical data can be deleted at regular intervals to make room for storing new contents, so that the audit data security management and control system has a better application prospect.

The invention provides an electronic data evidence storage method and system based on an alliance chain, and provides an alliance chain member admission method based on a distributed key generation protocol; a bottom alliance chain does not depend on a centralized CA node any more, it is ensured that user certificate application is independently completed by a user, and a third-party evidence storage mechanism is not needed for agency; the invention provides an electronic data encryption and decryption method based on a double-key pair mechanism and a (t, n) threshold encryption algorithm, and ensures that a judicial institution can verify the authenticity of the electronic data while ensuring the confidentiality of the electronic data stored by a user; a distributed management mode is provided, and security threats caused by a centralized management mode are avoided. The system architecture of the evidence storage system realized based on the electronic data evidence storage method can be divided into a user layer, an application layer and a data layer, and comprises five modules of registration and login, data evidence storage, data verification, block publication and a personal center. According to the invention, safe and reliable electronic data storage can be ensured.

The embodiment of the present invention discloses a network selection method and user equipment, which are used to solve the problem that the data service is interrupted when the UE residing in the LTE network falls back to the 2G / 3G CS network and executes the CS service, and returns to the LTE network. The rate at which the UE returns to the normal registration state of the LTE network. The method in the embodiment of the present invention includes: the user equipment falls back to the 2G or 3G network to perform the CS service from the first LTE cell, the network type of the first LTE cell is the first type, and when the user equipment performs the CS service on the 2G or 3G network, it ends , measure the LTE cells according to the LTE network information, obtain the measurement results for each LTE cell, and select the second LTE cell from the LTE cells whose measurement results meet the preset conditions to access the LTE network. The network type of the second LTE cell is the specified Describe the first type.

The invention relates to a server system backup recovery method and device, computer equipment and a storage medium, and the method comprises the steps: adding a backup hard disk locally or mapping aremote hard disk through a network, and making a partition backup of the system of the server through a recovery service of the server; when the server crashes, firstly starting the server to a winpeenvironment, and checking the partition state of the current server in the winpe environment; if the partition exists, installing a backup file in a previously backed-up hard disk by utilizing a diskmanagement tool and generating a virtual partition; generating a wim file from the virtual partition and recovering the wim file to a system partition; and setting the system partition as a starting partition, and normally entering the system after the server is restarted. According to the method, the server system can be backed up in real time, and the server can be quickly recovered when the server is abnormal, so that the problem that the system cannot be recovered after downtime is avoided, and the reliability of the server system is improved.

The invention discloses a signature device for large-amount electronic payment, which comprises an electronic pen binding mechanism, the electronic pen binding mechanism comprises an electronic pen, the electronic pen binding mechanism further comprises a folding and unfolding main body, a support frame and a rotating seat, the lower end of the support frame is fixedly connected to the upper end of the rotating seat, and the rotating seat is fixedly connected to the upper end of the folding and unfolding main body. The take-up and pay-off body and the supporting frame are rotationally installed together, the take-up and pay-off body comprises a first winding roller, a binding line, a first rotating shaft, a second winding roller, a pull rope and a heavy block, the upper end of the electronic pen and the lower end of the binding line are fixedly connected together, and the other end of the binding line and the first winding roller are fixedly installed together; the binding wire is wound at the inner end of the first winding roller, one end of the first rotating shaft is fixedly connected with the first winding roller, and the other end of the first rotating shaft is fixedly connected with the second winding roller. The invention relates to the technical field of electronic pen binding, and can improve the cleanliness of a desktop and better meet the use requirements.

The invention discloses a temporary contact device for 10kV distribution line bypass operation and a construction method, and belongs to the technical field of contact devices for 10kV distribution line bypass operation. The temporary contact device comprises overhead lines, wherein the overhead lines comprise a left overhead line and a right overhead line, and an overhead working truck is arranged between the left overhead line and the right overhead line; a lifting electric pole is arranged on the overhead working truck, an insulating support I is arranged on the upper portion of the extending end of the lifting electric pole, and a cable fixing mechanism I is arranged on the insulating support I; a load switch is arranged below the insulating bracket I, the load switch is connected witha cable quick connector, the cable quick connector is connected with a cable, and the cable penetrates through the cable fixing mechanism I to be connected with an overhead line. The method disclosedin the invention prevents the problem that the line operation mode is changed and cannot be recovered by establishing permanent connection at present, and is simple and quick in construction, small in labor amount and low in safety risk; the method also prevents the problem that the cable must be laid on the ground during operation, and ensures the normal operation of traffic.

The embodiment of the present invention discloses a distributed storage method, device, computer equipment, and storage medium. The method includes: grouping files to be stored to form multiple data groups; grouping all data into at least three data fragments, Wherein, each data fragment includes some data packets, and each data packet is added to at least two data fragments; each data fragment is stored in a distributed storage node; record data fragments and data The corresponding relationship between groups, and the corresponding relationship between storage nodes and stored data fragments; delete the local files to be stored. The technical solution of the embodiment of the present invention facilitates users to store files in a distributed network to reduce storage costs, and can effectively improve the privacy and security of stored files, thereby preventing attackers from restoring original files.

The invention discloses a calibration device of a middle groove of plate scraping machine and a calibration method thereof. The calibration device comprises a two-way hydraulic oil cylinder, wherein the end of a cylinder rod of the hydraulic oil cylinder is connected to a support seat via a rotation pin; the support seat is movably arranged in the middle groove and is limited left and right; the tail end of a cylinder barrel of the hydraulic oil cylinder is connected to an inverted U-shaped clamping groove; the U-shaped clamping groove is clamped to a pin rail pin fixing plate at the upper end of the right side of the middle groove. According to the calibration device, the U-shaped clamping groove is clamped to the pin rail pin fixing plate at the upper end of the right side of the middle groove; the bent part of the pin rail pin fixing plate can be calibrated by extension and shrinkage of the two-way oil cylinder; the calibration device is convenient and rapid in calibration; time and labor are reduced; the calibration efficiency is high; the damage to equipment and the injury to staff can be avoided; the safety is higher; the calibration flatness is higher; the calibration device also has the characteristics of simple structure, low cost and convenient and rapid in operation and maintenance.

The invention discloses a read-only snapshot rollback method and device, which are used to solve the problem that part of the read-only snapshot data cannot be obtained after the read-only snapshot is rolled back during the rollback process of the read-only snapshot. The method is, after receiving the rollback instruction of the read-only snapshot, obtain the root of the target read-only snapshot based on the rollback instruction of the read-only snapshot, replace the root of the file system with the root of the target read-only snapshot, and make the target read-only snapshot Roll back to the file system, and retain the read-only snapshots at all creation times after the creation time corresponding to the target read-only snapshot. By adopting the technical solution of the present invention, after the target read-only snapshot is rolled back to the file system according to the user's instructions, the read-only snapshots at all creation times after the creation time corresponding to the target read-only snapshot are retained, effectively preventing data loss caused by user misoperation. After the read-only snapshot is rolled back, the user can quickly obtain the required read-only snapshot, thereby effectively improving the operability of the system.

The invention discloses a plate levelness detection device for mechanical manufacturing, and the device comprises a supporting platform, the outer wall of the supporting platform is sleeved with a movable plate, the top of one side of the movable plate is fixedly connected with a top plate, one side of the top of the top plate is provided with a threaded hole, the inner wall of the threaded hole is provided with a threaded rod, and the bottom of the threaded rod is provided with a detection mechanism. A fixing plate is fixedly connected to one end of the top of the supporting table, an abutting plate is fixedly connected to the other end of the top of the supporting table, a clamping plate is placed at one side of the top of the supporting table, and connecting bases are fixedly connectedto one side of the clamping plate and one side of the fixing plate. Whether the pressure of a pressure gauge is changed or not is observed, the levelness of a plate can be conveniently detected, the distance between the clamping plate and the fixing plate is increased through the steel sheet, the plate can be conveniently fixed, the deformation strength of the steel sheet is rapidly stabilized through a magnet strip, and the plate is rapidly clamped and fixed.