105results about How to "Implement redundant backup" patented technology

The invention discloses a power supply for an unmanned aerial vehicle, which belongs to the field of unmanned aerial vehicles, and comprises a first power module, a second power module, a first voltage sensor, a second voltage sensor and a control module, wherein the first voltage sensor and the second voltage sensor are electrically connected with the first power module and the second power module respectively; the control module is used for controlling the first power module or the second power module to supply power for user equipment, acquiring the voltage detected by the first voltage sensor or the second voltage sensor, controlling the first power module or the second power module to stop supplying power and controlling the second power module or the first power module to supply power for the user equipment if the voltage detected by the first voltage sensor or the second voltage sensor is abnormal; the first power module and the second power module are arranged at the two ends of an aerial vehicle frame respectively. According to the technical scheme provided by the invention, the control precision is high, the flying action amplitude is small, the energy consumption is low, and the redundant backup of the power supply can be realized.

The embodiment of the invention provides a low-coupling distributed streaming computation framework with a master / slave architecture. The low-coupling distributed streaming computation framework comprises a distributed service environment, a cluster management master node, cluster work slave nodes and cluster service process nodes; the distributed service environment is used for storing the operation states, the load states and the task execution states of various distributed nodes; the cluster management master node is used for managing the operation states of cluster nodes and distributing tasks to the various cluster nodes; the cluster work slave nodes are used for executing tasks distributed by the cluster management master node and caching intermediate results of task execution in a Kafka; and the cluster service process nodes are used for consuming messages generated in the Kafka and obtaining service results. The low-coupling distributed streaming computation framework can be applied to streaming data process under multiple conditions, modules are fully decoupled, dynamic shrinkage and expansion can be achieved, redundant backup of data is achieved, and the service reliability can be achieved by means of the backup mechanism of the master node.

The invention provides a live streaming video stream real-time forwarding method, which is used for forwarding one source live streaming stream to multiple targets in real time. The method includes the following steps: a step of requesting live streaming: a client sends a standard RTMP request to require a source live streaming stream from a live streaming server; a step of relaying the stream: the live streaming server relays the source live streaming stream to one or more remote servers; a step of sending a client request: a forwarding server as a relay sends a standard RTMP client request to the remote servers; a step of receiving the stream and sending a push request: when the remote servers agree to forward the client request of the server, the forwarding server starts to receive the source live streaming stream, transcodes the source live streaming stream into a corresponding target live streaming stream, and sends the push request to all target stream media servers; and a step of pushing the stream: when the corresponding target stream media servers agree the push request, the forwarding server pushes the target live streaming stream to the corresponding target stream media servers. According to the invention, one live streaming stream can be forwarded to multiple platforms, and redundant backup of video streams can be realized.

The invention relates to a bus communication based small unmanned aerial vehicle control system. The bus communication based small unmanned aerial vehicle control system comprises data transfer radios, bus sensors, flight control computers, a power supply system, steering engines, a task device and a data recorder, wherein the data transfer radios use a CAN (controller area network) bus network as a communication foundation and conform to a unified communication protocol, and the data transfer radios, the bus sensors, the flight control computers, the power supply system, the steering engines, the task device and the data recorder are connected to interfaces of the CAN bus network respectively and are in both-way communication with the same. The system has the advantages of good instantaneity, high stability, high rate, easiness in contact expansion and low cost.

The invention discloses a message transmitting method and message transmitting equipment. The method comprises that: Backup equipment receives a first Advertisement message from Master equipment; and when determining it is necessary to transmit a second Advertisement message according to the priority of a VRRP backup operator of the Master equipment, the Backup equipment sends the second Advertisement message to an exchange board, and the exchange board learns the virtual MAC of the VRRP backup operator to a port connected with the Backup equipment according to a source MAC address of the second Advertisement message. In the invention, the constant flow rate of the VRRP backup operator in state switching is ensured.

An inductive counteractive momentum sphere system comprises a counteractive momentum sphere module, a displacement detection and drive circuit, a revolving speed detection module and a control system. The counteractive momentum sphere module is composed of a spherical rotor (1) and a coil electrode cage (2) arranged around the spherical rotor (1). The spherical rotor (1) conducts suspension driving and rotation driving through an alternating magnetic field generated by the coil electrode cage (2). The revolving speed detection module comprises a revolving speed detection probe (3) and a revolving speed detection circuit and detects out the revolving speed of the spherical rotor (1). A displacement detection part in the displacement detection and drive circuit detects out relative displacement of the spherical rotor (1). The control system generates control signals according to collected revolving speed information and displacement information of the spherical rotor (1), and a drive part in the displacement detection and drive circuit controls the current of the coil electrode cage (2) to change the alternating magnetic field so as to achieve feedback control over the spherical rotor (1).

The invention discloses an intelligent automobile redundant steer-by-wire device and a control method thereof. The intelligent automobile redundant steer-by-wire device comprises a steering wheel, a steering column, a road sensing motor, an electromagnetic clutch, a redundant motor, a gear rack steering gear, a power-assisted motor and a control unit, and the steering wheel is assembled at the topend of the steering column; and the road sensing motor, the electromagnetic clutch, the redundant motor and the gear rack steering gear are sequentially assembled on the steering column. The controlmethod comprises the steps that the steering device starts to work only when it is detected that a vehicle is started, and the steering device comprises two working modes and corresponding control methods, namely the driving auxiliary mode control method and the the automatic driving mode control method. The intelligent automobile redundant steer-by-wire device and a control method thereof have the advantages that redundant backup of the sensor, the motor, the control unit and the power source is achieved, and the service life can be prolonged. When slave ECU monitors that master ECU fails, the control right is taken over immediately, other structures are not needed, and seamless switching of the control right is easy to realize.

A method, apparatus and system for redundancy backup of video services are provided. The method includes: receiving a data stream from a video server; stopping delivering the data stream to an Internet Protocol (IP) network if determining that the data stream is abnormal; and triggering the IP network to change delivery of the data stream over to a redundant video server. With the method provided by the present invention, when the data stream played by the Near Video on Demand (nVOD) system is detected as abnormal, a route changeover can be completed so that the program stream of a redundant nVOD server is delivered to the IP network.

The invention discloses a scalable method of the network storage device, including the following steps: inter-network the network storage device, wherein at least one network storage device is connected with other network storage devices; the network storage devices will elect the main network storage device according to the packet interaction between the network storage devices; the non-main network storage device will back up the configuration information in the elected main network storage device. The invention realizes the redundant backup between the network storage devices and improves the reliability and stability of the network storage devices.

The present invention discloses an inner reliable interconnected communication apparatus. The present invention adopts port binding technology to realize communication apparatus reliable interconnecting, through port binding two mutual backed physical network board communications to form one logical network board. In-frame service boards are all bound with tow physical network boards for realizing in-frame communication, logical network among different frames are all interconnected; physical network board in same frame also is bound; on this basic, service board or network board capable of select port communication to realize service load equipartition in port; in port fault automatically abandoning said link to realize link level protection reversion.

The invention relates to a system and a method for realizing redundancy backup of video signals, and the system comprises a video processor and a plurality of display units for receiving output signals of the video processor, wherein each display unit in the plurality of the display units is used for receiving a first video output signal and a second video output signal which are outputted by two lines of the video processor and are the same, and further selecting one video output signal as a signal source for display or displaying prompt information that two lines of the signal sources have no signals. Each display unit can judge and control a video decoding module thereof to select the first video output signal as the signal source for display or selecting the second video output signal as the signal source for display or displaying the prompt information that the two lines of the signal sources of the first video output signal and the second video output signal have no signals through an image processing module thereof; and the system can realize the redundancy backup of the video signals, has high reliability and is particularly applicable to being applied in a monitoring system of a control center and other occasions with relatively strict requirements on display reliability.

The invention discloses a communication equipment whose inside parts are reliably connected with each other, relating to the communication equipment, which can realize the reliable interconnection communication among frames and among veneers inside the equipment, based on the present hardware configuration and on the premise that the bandwidth utilization is assured. Wherein, a port binding technology is adopted to realize the reliable interconnection of the parts inside the communication equipment; through the port binding, two physical otter boards, which are backups for each other, are bound and communicated to form a logic otter board; service boards inside the frames are all port bound with the two physical otter boards to realize the communication inside the frames, and the logic otter boards among different frames are all interconnected; the physical otter boards inside one frame are also bound and interconnected; on such basis, the service boards or the otter boards can select ports to communicate to realize the average distribution of the traffic load at the ports, and automatically give up the link when the ports are in fault to realize the protection switching of the link grade.

The invention discloses a large screen display system provided with two controllers. The system is composed of a large screen jointing wall set and two controller sets of same settings, wherein the two controller sets comprise a master controller and a backup controller, the jointing wall is provided with a digital input channel and an analogue input channel, the digital input channel is connected with the master controller via a digital line, the analogue input channel is connected with the output interface of the backup controller via an analogue line, the master controller and the backup controller are connected via network devices. The invention further discloses a method for realizing the large screen display system. When the master controller has faults, the large screen display system automatically switches to the backup controller, to avoid interrupting the distribution of control room caused by the faults of controller, thereby improving distribution safety.

The invention provides a digital bridge capacitive measuring module. According to the following technical scheme, a balancing bridge arm and a measuring bridge arm form a digital balancing mechanism, wherein the phase difference between alternating signals of the balancing bridge arm and the measuring bridge arm is 180 degrees; an excitation source unit generates three kinds of signals, wherein the 0-degree phase driving signals are used for driving a synchronous amplification circuit to send orthogonal filtering measuring signals into a zero-position balancing unit to generate rebalancing monitoring signals, the AC reference signals are used for driving a capacitor-balanced bridge arm circuit, and the AC excitation signals are used for driving a BITE detection bridge arm circuit in different times; the two alternating signals, with the phase difference being 180 degrees, of the balancing bridge arm and the measuring bridge arm are summed through a summing circuit and are filtered into a 0-degree phase driving signal and a 90-degree phase driving signal through a band-pass filter circuit; a CPU control unit conducts balance control on a D / A converter in the zero-position balancing unit, data of the D / A converter are compared with theoretical data pre-stored in the CPU control unit, and the CPU control unit uses the data, obtained when it is detected that the balancing bridge arm and the measuring bridge arm are balanced, of the D / A converter as the currently measured capacitance value.

The invention discloses a remote control method and device for an autonomous vehicle, and a server. The method comprises the steps: determining a corresponding control instruction according to a remote control request after the remote control request of the autonomous vehicle is received, and transmitting the control instruction through the wireless channels corresponding to a plurality of wireless networks. Therefore, the method achieves the transmitting of the control instruction through the wireless channels corresponding to the plurality of wireless networks, thereby achieving the redundant backup of the control instruction, avoiding a condition that the autonomous vehicle cannot timely obtain the control instruction because of the instability of a single network, improving the communication stability of the communication with the autonomous vehicle, enabling the control instruction to timely reach the autonomous vehicle, enabling the autonomous vehicle to make quick response according to the control instruction, and improving the running safety of the autonomous vehicle.

The invention relates to a dual MCU control system applied to an automobile electronic parking brake. The dual MCU control system is characterized by comprising a microcontroller MCU1#, a microcontroller MCU2#, a control switching circuit, H-Bridge driving circuit, a parking switch circuit and a biaxial acceleration sensor; the microcontroller MCU1# and the microcontroller MCU2# are the core modules of an electronic parking brake control system, and the microcontroller MCU1# and microcontroller MCU2# implement the control switching circuit to realize the control over a parking motor by detecting the parking switch circuit and biaxial acceleration sensor signals; and the dual circuit MCU system is the core of the control system, can independently control a drive circuit to realize the control over an electronic parking brake motor, can switch to the other circuit to continue to control after one of MCU circuits fails to control, realizes redundant backup of the control system, obtain better system backup, and realizes high safety and high reliability of the system.

The invention discloses a double-path connection M2M (machine-to-machine) system, which comprises an M2M terminal, an M2M platform and an application system, wherein the M2M terminal is respectively connected with the M2M platform and the application system, and the two paths of connection are based on different protocols; one path of connection realizes the data interaction between the M2M terminal and the M2M platform, and then the M2M platform and the application system establish a data transmission channel through the internet; and the other path of connection realizes the direct data interaction between the M2M terminal and the application system. The invention also discloses a double-path connection M2M terminal and a connection method thereof. The M2M system and the terminal disclosed by the invention have the characteristics of double paths of connection, the reliability of wireless communication is enhanced, and redundance backup and timely updating of acquired information are realized; and offline reconnection measures ensure connection online to the maximum extent, and the occurrence of a terminal incontrollable state is reduced.

The invention discloses a method and a device for bonding wireless distribution system links, which are used in a network having at least two access points AP. The method comprises the following steps that: wireless mesh link-groups are established on the two APs in the network respectively; the APs detect the establishment state of the WDS links, add the successfully established WDS links matched with the parameters in the mesh link-groups into the mesh link-groups, and shield mesh link interface information corresponding to an mesh link interface of the WDS links added into the wireless mesh link-groups; and the APs forward data by using the mesh link groups. The method and the device realize the redundancy backup of the WDS links, improve the reliability of the system and the performance of the WDS links and realize spectrum spreading.

The invention discloses a compound steering-by-wire system driven by a passenger car motor and a steering control method. In the system, a road sense motor is connected with a road sense motor deceleration mechanism and connected with a steering drive shaft provided with a torque angle sensor, a steering wheel is successively connected with the steering drive shaft, a torque rod, an upper transmission shaft and an electromagnetic clutch, in the steering executive motor deceleration mechanism, a first worm gear is installed on a steering gear shaft connected with a lower transmission shaft, andthe two ends of a first worm are both connected with a steering executive motor; and a steering pinion in a steering gear is coaxially and fixedly connected with the first worm gear, the two ends ofa rack are connected with steering wheels correspondingly, an ECU is connected with the torque angle sensor, the road sense motor, the electromagnetic clutch and the steering executive motor through signals. The method includes a conventional steering control method, a failure backup steering control method and a mechanical steering control method. According to the compound steering-by-wire systemdriven by the passenger car motor and the steering control method, in the case of the failure of electrical elements of the system, the steering action can be successfully completed, and the safety of the steering system is greatly improved.

The invention discloses a redundant serial communication device with an automatic replacing function. The redundant serial communication device with the automatic replacing function comprises a power module, a high-voltage anti-latch type four-channel single-pole single-throw (SPST) switch, a control unit, a sensor unit, a first serial port unit and a second serial port unit, wherein the first serial port unit and the second serial port unit are redundant for each other. The first serial port unit comprises a first serial port chip module and a first low input voltage load current-limit switch module. The second serial port unit comprises a second serial port chip module and a second low input voltage load current-limit switch module. The control unit controls the first serial port chip module or the second serial port chip module to be connected with external serial port modules through the high-voltage anti-latch type four-channel SPST switch. The redundant serial communication device with the automatic replacing function has the advantages of being safe and reliable, capable of monitoring and replacing damaged chips automatically, simple in circuit structure, and long in service life.

The present invention relates to the field of wireless communications, and discloses a method of controlling wireless networks and base station transmission. The probability for base station quit service is reduced. Reliability of the base station is strengthened. In the invention, the base station will at least has two Iub interface processing unit through the same cable with RNC. Type of the cable is Y. The base station side in the cable connector is divided into a number of bifurcations, and Iub interface is connected with the processing units. With furcate cable conjoint, Iub mouthpiece processing unit and Iub interface processing unit send out upload data toward the RNC. At least there is one Iub interface processing unit receiving download data from RNC. In furcate cable conjoint. Loop connection signal wire is contained in it. It indicates the joint corresponding Iub interface processing unit and every other Iub mouthpiece processing unit attaching through the identity cable with RNC.

The invention discloses an eight-rod connecting type non-contact satellite platform load pose adjusting device and method. The device is mainly composed of a vertical unit comprising four identical vertical installation force executors and a horizontal unit comprising four identical horizontal installation force executors. The eight force executors are all arranged between a satellite service module and a loading module, and the satellite service module and the loading module are connected into a whole through bolts. The vertical installation force executors and the horizontal installation force executors are arranged in a circular array relative to the central axis of a platform and arranged in a mutually staggered mode, and the eight force executors are integrally arranged in an orthogonal mode. On the basis of the basic mechanical principle that the pose is not affected when resultant moment is zero and horizontal movement is not generated when resultant force is zero, six-degree-of-freedom pose adjustment of horizontal movement and rotation of a load can be achieved through the combination of telescopic movement of the force executors of the eight-rod connecting type non-contact satellite platform load pose adjusting device.

The invention provides a redundancy backup processing method and a redundancy backup control circuit of a capacitor. The redundancy backup processing method of a capacitor comprises the following steps of: detecting the fluctuating condition of a power supply in a circuit; and automatically adding a backup filtering capacitor in the circuit according to the fluctuating condition of the power supply. The redundancy backup control circuit of a capacitor comprises a detecting module and a redundancy backup control module, wherein the detecting module is used for detecting the fluctuating condition of the power supply in the circuit; and the redundancy backup control module is used for automatically adding the backup filtering capacitor in the circuit according to the fluctuating condition ofthe power supply. The embodiment of the invention learns the backup filtering capacitor automatically added into the circuit when the filtering capacitor is invalid by detecting the fluctuating condition of the obtained power supply, thereby greatly reducing the maintenance cost and improving the integral performance of electronic equipment.

The invention discloses a multiple description coded distributed media stream distribution system and a method, and the multiple description coded distributed media stream distribution system comprises a storage subsystem, a storage scheduling subsystem, a multiple description coding subsystem, a distribution subsystem and a distribution scheduling subsystem, wherein the storage scheduling subsystem is used for selecting N first distributed storage units from a plurality of distributed storage units; the multiple description coding subsystem is used for carrying out multiple description coding on an original video, forming N multiple description coded code streams and respectively sending the N multiple description coded code streams to the N first distributed storage units for storing; the distribution subsystem is connected with the storage subsystem and comprises a plurality of distributed distribution units; and the distribution scheduling subsystem is used for selecting M first distributed distribution units in the distributed distribution units connected with the first distributed storage units according to a client request and notifying a multiple description decoding subsystem arranged at a client. The invention can improve the reliability of the system.

The invention relates to an end-to-end multi-link multi-node full-automatic redundant backup routing system which comprises a user side, a main link node machine, a backup link node machine, a core IPnetwork platform and an upstream operator network platform. The user side is connected with the main link node machine and the backup link node machine. The core IP network platform is connected withthe main link node machine, the backup link node machine and the upstream operator network platform. The backup link node machine can realize full automatic redundancy and backup for the informationof the main link node machine. When the main link node machine fails, the backup link node machine automatically replaces the main link node machine. The user side comprises two user firewalls which are corresponding to the main link node machine and the backup link node machine respectively. Compared with the prior art, the end-to-end multi-link multi-node full-automatic redundant backup routingsystem provided by the invention has the advantages of low cost, simple implementation, load balancing device input saving and the like.

A pin puller based on a memory alloy wire comprises a pin, a housing, a pull rod, an ejection spring, a front insulating mat, a pull tray, a memory alloy wire, a PCB (printed circuit board), a rear cover and a service conductor, wherein two bonding pads of the PCB are conducted respectively, but not with each other; the pull rod is sleeved and fixedly connected with the front insulating mat and the pull tray; the two ends of the memory alloy wire are soldered and fixed with the PCB; the service conductor is welded on the service conductor bonding pad of the PCB and thrown out through an opening in the housing; the pull rod penetrates out of a waist-shaped hole in the housing; the pull rod is sleeved with the ejection spring; and the pin is inserted into the ejection spring and screwed into the pull rod. according to the pin puller, the problem of too small operation force of the memory alloy wire is solved by adopting the method of back-and-forth shuttling of the memory alloy wire between the pull tray and the PCB for many times; compared with the existing pin puller for an initiating explosive device, the pin puller has the advantages of low energy source requirements, large output pull and easiness in reliability and safety guarantee.

The invention discloses a software secondary radar based on a general server platform. The software secondary radar comprises a transceiving and processing extension and a data processing server, wherein the transceiving and processing extension comprises a transmitter, a receiver and a digital intermediate frequency processing module; the data processing server comprises a signal processing unitand a data processing unit; the data processing server is an X86 architecture universal server, adopts an open source Linux operating system and has at least two CPUs, and each CPU has a plurality cores; and a PCIE optical fiber card is installed inside the data processing server, the digital intermediate frequency processing module and the data processing server are each internally provided withone or more optical fiber interfaces, and data transmission between the digital intermediate frequency processing module and the data processing server is conducted by adopting high-speed optical fibers. The software secondary radar improves the integration degree of the overall equipment of the radar, simplifies internal signal interfaces, reduces the cost and maintenance fee of the entire radar,and facilitates the research, development and simulated debugging of a signal processing algorithm of the secondary radar.

The invention discloses a power supply structure for a stratospheric aerostat. The power supply structure comprises a first power supply unit and a second power supply unit, wherein the first power supply unit comprises a first solar cell array, a first unidirectional DC converter, a first bidirectional DC converter and a first energy storage battery which are electrically connected in sequence; and the second power supply unit adopts an electric connection structure which is the same as the first power supply unit. The power supply structure for the stratospheric aerostat comprises two independent power supply units, and a distributed installation method is adopted to meet the requirement for center-of-gravity regulation of the aerostat; the redundant backup is realized through a controllable parallel connection of the same components of the two independent power supply units, a fault isolation function of a component level and a component backup function between the two power supplyunits are realized, and the reliability of system operation is improved; the power supply structure has various working modes, and bus voltage is guaranteed to remain stable always.

The embodiment of the invention discloses a method and device for numbering single-point data in a cloud storage system and a storage medium. A unique file identifier is allocated for each user file;if the user file is divided into N data blocks, and the N data blocks are numbered; if M data blocks are stored in the system, the M data blocks are numbered; if different versions of user files existin the system, different versions of files are respectively numbered. A cloud storage model blocks data. Each piece of large file data is sequentially divided into 64MB data blocks to serve as data blocks, and thus the redundancy of the system is reduced.