33results about How to "Implement hot backup" patented technology

The invention discloses a reconfigurable / dual redundancy VPX3U signal processing carrier board based on Soc, under VPX control surface 1GEx1 signalization, a carrier board Soc controller can perform control command dynamic loading and logical function on-line reorganization on a high-performance reconfigurable FPGA (Field Programmable Gate Array), and board-level power and timer management and condition monitoring are completed; a reconfigurable FPGA chip is in interaction with front-end received signals through a standard FMC interface, and multi-function real-time digital signal processing is realized according to a loading program. Meanwhile, a dual-redundancy data bus interface is designed in a VPX connector, and a signal processing carrier board can be in data interaction with other board cards such as a master control switch card, an adjacent board card and the like in the system by a VPX dual redundancy data bus interface.

The invention discloses a comprehensive fault detecting device and a method for shifting a main computer and a standby computer, and relates to the application communication field. The invention aims at providing comprehensive detection in main-standby shifting condition. The main computer and the partner computer of a main-standby shifting comprehensive fault detecting device are symmetric in structures. Each of the main computer and the partner computer respectively includes a CPU, a programmable control circuit module which is connected with the CPU through a CPU address / data / control bus, a communication interface module, a hardware reset register, and a software reset register; the programmable control circuit module contains a summation meter inside. A main-standby shifting comprehensive fault detecting method includes the steps of initializing a programmable control circuit and the application software; conducting state detection and data synchronization on the main computer and the partner computer periodically, and determining whether a mark in the hardware reset register and the software reset register is read according to the detection result. The invention is applicable for an important working unit which needs the communication and control bus distribution system with main-standby shifting function.

The invention relates to a power line carrier-based intelligent networking control system and method. The system comprises nodes (103 and 104), which are connected to a charging line of a power line for transceiving control commands and data on the power line through the power line carrier, wherein the first node (104) of the nodes (103 and 104) is the root node of the network needing to be organized, the first node (104), as a parent node, is used for broadcasting networking signals on the power line through the power line carrier, the second nodes (103 and 104) which receive the networking signals and meet the scheduled communication quality standards join the network as child nodes of the first node (104), the first node (104) allocates network configuration information to the second nodes, the first node (104) is used for forming a routing table according to the allocated network configuration information, and the network configuration information of all the nodes of the network is recorded in the routing table.

The utility model relates to a network administration system and the method thereof, among which the system comprises a plurality of network administration equipment which act on behalf of the network elements; the method is that that the proxy network administration provides the main network administration equipment and the sub-network administration equipment with the read-write permission and the read-only permission as per the primary authorization table; the proxy network administration conducts the real time examination for the status of each network administration equipment and provides the network administration equipment with corresponded competence as per the authorization table. For the same period of time, only one unit of the network administration equipment is provided with the read-write permission. The server synchronous mechanism is adopted to control the information data and hot reserve among the network administration equipment as well as switch as per the status. The utility model introduces a plurality of the network administration equipment to control the network elements. The precedence level is adopted to guarantee that only one network administration equipment is provided with the read-write permission, so as to realize the simultaneousness management of a plurality of the equipment and the hot reserve of the network administration system, so as to improve the system reliability and the utilization of equipment.

The invention discloses an adaptive variable redundancy 3U signal processing backboard based on a VPX bus. Through two paths of SRIO (Serial RapidIO)x4 and two paths of PCIe (Peripheral Component Interface Express)x1, the dual redundancy point-to-point interconnection of high-speed data is realized; through two paths of 1GE (1GB Ethernet)x1, the dual redundancy point-to-point interconnection of a control command is realized; and through two paths of SRIOx4 and two paths of 1GEx1, data interaction between two master control switching boards is realized so as to realize the hot backup of the whole system. The whole signal processing backboard topology framework can expand the amount and the type of board cards supported by the backboard according to a current signal processing task, and therefore, the backboard exhibits good expansibility and flexibility, and can adapt to the tendency of current aerospace field development.

The invention discloses a traffic forwarding method and devices. The method comprises the following steps of: connecting a plurality of forwarding devices between a WAN (wide area network) and a LAN (local area network) into a ring, taking one forwarding device on the ring as a root device, using one of two ring ports of the root device as a primary ring port while using the other as a secondary ring part; setting the secondary ring port in a state of forbidding service forwarding, setting an LAN port of one of the forwarding devices in the state of allowing the service forwarding, and setting the LAN ports of other forwarding devices in the state of forbidding the service forwarding; when traffic from the LAN reaches any forwarding device of the ring, mirroring the traffic to the other ring port by the forwarding device; meanwhile, judging whether the traffic can be forwarded to the WAN per se according to a predetermined traffic balancing algorithm or not; if so, forwarding the traffic to the WAN. The forwarding devices between the LAN and the WAN can be used for balancing the traffic in the invention.

The invention discloses a ring communication network master station redundancy method, a device and a system. The method comprises steps: a backup master station receives and caches a data packet sent by a working master station adjacent to the network position of the backup master station, after a data packet sent by the working master station in an opposite direction arrives at a target station, the target station sends a feedback data packet back, and the feedback data packet is eliminated after arriving at the working master station and the backup master station; the backup master station determines a network identification number of the data packet is the same as the self network identification number, the feedback data packet is sent back; or else, the date packet is forwarded forwardly, and the data packet is eliminated after arriving at the target slave station or the working master station. When a line or the slave station fails, the backup master station can cache all data packets sent by the working master station as network positions of the backup master station and the working master station are adjacent; the feedback data packet back sent by the slave station is eliminated after arriving at the working master station and the slave station, the backup master station can receive the feedback data packet from a non-fault slave station, and thus the backup master station can receive all data packets and the feedback data packets, and hot backup of data is realized.

The invention belongs to the field of testing control devices, and particularly relates to a magnetic-electric rotational-speed sensor capable of realizing hot-redundancy of devices. The magnetic-electric rotational-speed sensor comprises a permanent magnet, a first independent induction coil, a second independent induction coil, a signal processing circuit and a sensor shell. The first independent induction coil and the second independent induction coil are wound on the permanent magnet and fix the permanent magnet into the sensor shell, the axis of the permanent magnet is coincided with the central axis of the sensor shell, the two independent induction coils are respectively connected with the signal processing circuit, holes are arranged in centers of two ends of the sensor shell, the end of the sensor shell close to the signal processing circuit is used for leading out a conducting wire, and the other end of the sensor shell is used for receiving detection signals. The magnetic-electric rotational-speed sensor can work normally assuredly even if the optional coil fails, reliability of the magnetic-electric rotational-speed sensor is greatly improved, and reliability of measured objects such as diesel engines, gasoline engines and gas turbines is also improved.

The invention discloses a method and system for transmitting services between an RRU and BBUs, and the BBUs, and relates to the technical field of communication. The technical problem that in the prior art, protection is lacking in service transmission between the RRU and the BBUs is solved. The method includes the steps that firstly, the RRU has access to the BBU 1 and the BBU 2; secondly, the BBU 1 detects whether faults happen to a light path 1 between the BBU 1 and the RRU or not in real time, and the BBU 2 detects whether faults happen to a light path 2 between the BBU 2 and the RRU or not in real time, wherein service data are transmitted through the light path 1 between the BBU 1 and the RRU; thirdly, when the BBU 1 detects that faults happen to the light path 1 for transmitting the service data between the BBU 1 and the RRU, the BBU 2 is informed to take over all the service data; fourthly, the BBU 2 starts to use the light path 2 between the BBU 2 and the RRU to transmit the service data to the RRU.

The invention relates to a multi-channel ROF system and an implementation method. Eight paths of radio frequency signals are respectively input to eight optical transfer insertion boxes of optical terminal equipment I for electro-optical transform; eight paths of optical signals are output; the eight paths of optical signals are respectively transmitted to eight optical receiving insertion boxes of optical terminal equipment II through an optical cable; the optical receiving insertion box carries out optical-electro transform on the eight paths of transmitted optical signals; eight paths of radio frequency signals are restored; remote transmission of the eight paths of radio frequency signals is completed; or the eight paths of radio frequency signals are respectively input to eight optical transfer insertion boxes of the optical terminal equipment II for electro-optical transform; eight paths of optical signals are output; the eight paths of optical signal are respectively transmittedto eight optical receiving insertion boxes of the optical terminal equipment I through the optical cable; the optical receiving insertion box performs optical-electro transform on the eight paths oftransmitted optical signals; eight paths of radio frequency signals are restored; and remote transmission of the eight paths of the radio frequency signals is completed. The invention is a flexible and stable multi-channel ROF system with small volume, light weight, high density and low power consumption.

The invention discloses a data backup method and device and a database remote backup system, the data backup method is suitable for a main library of the database remote backup system, the main library and a standby library communicate through a mirror image communication process, and the data backup method comprises the following steps: receiving a first identifier of a first pre-writing log of the standby library; obtaining an identifier increment of a second identifier of a second pre-written log relative to the first identifier according to the first identifier, wherein a second preset logis stored in a main library; and sending a second pre-written log increment corresponding to the identifier increment to the standby library, so that the standby library stores the modification datacorresponding to the second preset log increment in the main library according to the second preset log increment. The preset log increment in the main library relative to the preset log increment inthe standby library is sent to the standby library, the main library and the standby library form the internal logic of the database remote backup system to back up the modified data, and backup can be completed without disconnecting the service.

The invention discloses a server and a double-link backup method thereof. In the method, one or more long-time online addresses are selected as reliable link addresses by the server, and double-link IP addresses supported by the server are set as a master address and a slave address; when the server arrives at preset time, a link request is initiated to a reliable link address based on the primary address, if the link succeeds, the primary address external service is bound, and a gateway correspondent to the master address is set as a default gateway; otherwise, the server initiates a connection request to a reliable link address based on the slave address, if the link succeeds, the slave address external service is bound, and a gateway correspondent to the slave address is set as a default gateway; and if the link fails, external service is not provided. The method realizes double-link hot backup of servers on Windows platform to greatly improve reliability index of servers.

The invention discloses a hot backup system of a telephone conference system, relating to a system device on the aspect of a communication technology. The defect of low reliability exists in the prior art. The hot backup system comprises a communication network as well as a main master control CPU (Central Processing Unit) and a standby master control CPU which are connected through the communication network; the system also comprises a plurality of functional veneers which are also connected with the main master control CPU and the standby master control CPU through the communication network. The reliability and the stability of the system are improved, and the system is convenient to use.

The invention discloses a method for realizing SCTP (streaming control transmission protocol) protocol hot backup, a system and a server host. The method comprises the following steps: a first host is coupled with a client SCTP and backs up the coupled COOKIE to a second host; the second host activates the coupling when the fist host cannot work as usual; the kernel of the second host sets the timestamp of the COOKIE according to the current time, and computes the signature by use of a secret key so as to generate a TCB corresponding to the coupling , a server-side SCTP coupling finishes the recovery; the kernel of the second host generates and restarts the COOKIE_ECHO, and sends to the client. Therefore, the backup of the SCTP is realized by use of the features established by the SCTP; the main-standby switching of the SCTP is realized by use of the restarting process of the SCTP, the hot backup can be realized without frequently synchronizing and coupling the data between two hosts, and the process is simple and easy to realize.

The invention discloses a method for realizing hot backup of a softswitch recording system, and relates to the field of softswitch communication. Based on the centralized recording mode, the present invention configures more than two recording servers in the softswitch, and then applies for at least 4 recording ports to the media server; after the recording port application is successful, the calling user and the called user will call The RTP stream and the called RTP stream are respectively sent to the corresponding recording ports of the media server; the media server sends the received calling RTP stream and called RTP stream to each recording server respectively. Compared with the distributed method, the present invention effectively reduces the cost of the recording system; as long as one of the multiple recording servers works normally, the complete RTP stream can be saved, thereby improving the reliability of the recording system and realizing the whole network Hot backup for recording systems.

The invention discloses a digitalized double-excitation uninterrupted switching power supply. The power supply comprises a main transformer provided with a primary coil and a secondary coil, also comprises a main loop, a synchronous rectification output loop, a synchronous DC converter and a digital control unit; the main loop comprises a high voltage switching network, a resonant inductor, the primary coil and a resonant capacitor; the synchronous rectification output loop comprises a current-double rectifier and filter circuits connected to the two output ends of the current-double rectifier, and the current-double rectifier is constructed by connecting two synchronous rectifier tubes and the secondary coil in parallel, and the synchronous rectifier tubes are connected in series oppositely; the synchronous DC converter comprises two low voltage switching tubes, an isolation diode and a low voltage DC source; the digital control unit automatically selects either the main loop or the synchronous DC conversion circuit according to the voltage change of a high voltage DC bus, and stable DC output is supplied.

The invention discloses a method and a device for transfer station hot standby, and a communication system. The method comprises steps that a first electric signal generated according to a signal received by a first transfer station from an antenna is acquired, and a second electric signal generated according to a signal received by a second transfer station from the antenna is acquired; whether the first electric signal and the second electric signal are valid is determined; if the first electric signal is valid, the first transfer station is selected to connect with the antenna; if the first electric signal is invalid, and the second electric signal is valid, the second transfer station is selected to connect with the antenna; if the first and second electric signals are both invalid, the first and second transfer stations are controlled for stopping forwarding signals received by the antenna. Through the method, the first and second transfer stations are mutual standby transfer stations which can realize automatic switching to carry out signal forwarding.

The invention discloses a ring communication network master station redundancy method, a device and a system. The method comprises steps: a backup master station receives and caches a data packet sent by a working master station adjacent to the network position of the backup master station, after a data packet sent by the working master station in an opposite direction arrives at a target station, the target station sends a feedback data packet back, and the feedback data packet is eliminated after arriving at the working master station and the backup master station; the backup master station determines a network identification number of the data packet is the same as the self network identification number, the feedback data packet is sent back; or else, the date packet is forwarded forwardly, and the data packet is eliminated after arriving at the target slave station or the working master station. When a line or the slave station fails, the backup master station can cache all data packets sent by the working master station as network positions of the backup master station and the working master station are adjacent; the feedback data packet back sent by the slave station is eliminated after arriving at the working master station and the slave station, the backup master station can receive the feedback data packet from a non-fault slave station, and thus the backup master station can receive all data packets and the feedback data packets, and hot backup of data is realized.

The invention discloses a mine hydrologic monitoring system based on a WIA wireless network. The mine hydrologic monitoring system comprises data collecting equipment for detecting hydrologic information, data management equipment for detecting information analyzing and processing and outputting and displaying results and network management equipment for managing and maintaining network safety. The data collecting equipment, the data management equipment and the network management equipment are connected with each other through data lines. The data collecting equipment comprises a plurality of monitoring stations for collecting and transferring detecting information and WIA wireless gateways connected with the monitoring stations in a wireless mode. Each monitoring station is connected with a plurality of sensors for detecting different kinds of hydrologic information in a wired mode. The data management equipment and the network management equipment are connected with the WIA wireless gateways through data lines. Wiring is easy, the sensors can be arranged at different positions according to needs, moving can be achieved, monitoring effect is continuous and accurate, and a blind zone cannot appear easily.

The invention provides a standard spider-web fractal networking method for low voltage power line communication, and relates to a standard spider-web fractal networking technology for low voltage power line communication. The standard spider-web fractal networking method for low voltage power line communication solves the problem that a current networking method has the disadvantages of being low in the networking efficiency, being low in the reliability and being low in survivability. The method comprises: a main node distributes two time slots for the main node, and then in the first time slot, the main node corrects the frequency offset between the main node and slave nodes. In the second time slot, the main node sends a data frame allowing registration of nodes to the slave nodes within the communication range. When the nodes register successfully, the main node can give a response. In a convergence area, the main node stores the registered slave nodes in a topology table and distributes TEI for the slave nodes. When the convergence process completes, the main node distributes time slots for the registered slave nodes, and the slave nodes which acquire the time slots can perform networking according to the distribution sequence of time slots. The standard spider-web fractal networking method for low voltage power line communication is suitable for a low voltage power line communication field.

The invention discloses a device and method to realize switch the main and backup units, which comprises: one main work unit composed of a CPU, a PLD, a communication interface control unit, a data bus, and a control bus; and at least one backup work unit; wherein, labeling individual main and backup state to control software running, using data bus for periodic synchronous data. This invention can improve system reliability greatly, makes main and backup units relative independent, and convenient to auto switch and reply and other application.