36results about How to "Realize data forwarding" patented technology

The embodiment of the invention discloses a remote assistance connection establishment method and device, a server and a storage medium, and relates to the field of remote assistance. The method comprises the steps that a connection request packet sent by a master control end is received, the connection request packet comprises equipment information and a target authorization code of a controlledend, and the equipment information and the target authorization code are obtained by the controlled end from a control center; authorization verification is performed on the connection request packetaccording to the equipment information and the target authorization code; when the connection request packet passes authorization verification, remote assistance connection with the main control end is established, and the connection request packet is forwarded to the controlled end; and when the connection response packet sent by the controlled end is received, a remote assistance connection withthe controlled end is established, and the connection response packet is forwarded to the controlled end. Even if P2P connection cannot be established between the master control end and the controlled end, the master control end and the controlled end can realize remote assistance of the master control end to the controlled end through the remote assistance server, so that the limitation of remote assistance is broken through.

The embodiment of the invention provides an interprocess communication method and equipment, and relates to the field of communication control. Network socket loopback data transmission is used for conducting interprocess communication, communication messages can not work within a system range, and multiplexing or controlling can be facilitated. Meanwhile, a destination address is set to be a network loopback address, data forwarding is achieved on a protocol layer, and the speed of interprocess communication is improved. The interprocess communication method comprises the steps that a first IPC module receives data sent by a first process; the data is packaged to form a data package, the data package comprises a package head and data, and the package head comprises a source address, a port number of a source process, a network loopback address and a port number of a destination process; the data package is sent to an operation system, and the operation system is made to send the data package to a second process according to the destination address and the port number of the destination process; meanwhile, the second process can also sends data to the first process by the interprocess communication method.

The invention relates to an electric energy monitoring front end data acquisition device which comprises a power module, a data acquisition module, an operational amplifier, an A / D conversion chip, a control module, an Ethernet controller and a high-speed communication bus. The data acquisition module collects external electric energy signals, one line of output signals of the data acquisition module is conditioned by the operational amplifier in a signal mode and then is transmitted to the A / D conversion chip, after active power filter processing is conducted on another line of the output signals, the another line of the output signals is directly transmitted to the A / D conversion chip, the A / D conversion chip converts the received signals into digital signals, then the digital signals are transmitted to the control module, the control module conducts packing processing on received data, a data package is transmitted to the Ethernet controller, and finally the data package is issued to a control device through the high-speed communication bus. Compared with the prior art, the electric energy monitoring front end data acquisition device has the advantages of being high in data monitoring precision, strong in adaptive capacity, powerful in function, low in power dissipation, convenient to mount, reliable in data transmission, high in communication speed, capable of achieving high-speed networking and the like.

The invention provides quick network protocol design and authentication equipment capable of realizing collaborative configuration of hardware and software. The equipment at least comprises an FPGA (Field Programmable Gate Array)-based switching unit and a control unit connected with the switching unit, wherein the switching element is provided with a communication interface connected with network equipment, and is used for separating experimental data and general data both from the network equipment and then forwarding the both correspondingly according to control rules; and the control unit is used for providing a network protocol design platform for designers, offering corresponding control rules for the switching unit according to a designed network protocol, and carrying out authentication for the designed network protocol according to the experimental data received by the switching unit and the forwarded experimental data. The equipment provided by the invention has the advantages that the data forwarding and data control are separated, and a test for a new network communication protocol can be performed without affecting the running of the current network.

The invention provides a wireless sensor placement method for wind-induced bridge vibration monitoring. The method comprises the following steps of: firstly simulating a wind field on the basis of a bridge finite element model and a standard wind spectrum, and carrying out calculation to obtain a wind-induced bridge vibration response by adoption of a wind-induced bridge vibration response time domain calculation method; calculating a contribution degree, for the wind-induced bridge vibration, of each selectable measurement point, drawing a contribution degree curve of each selectable measurement point, and arranging wireless sensors by taking peak points and valley points of the contribute degree curves as key measurement points; and further uniformly arranging relay measurement points as few as possible between the key measurement points and between the key measurement points and a data aggregation node of a data processing center, so as to realize the wireless sensor placement of wind-induced bridge vibration monitoring. The method has the advantages of being simple to operate and easy to realize, has the effect of improving the representativeness of sensor data acquisition and the reliability of transmission, and has a wide engineering application prospect.

Embodiments of the present invention provide a method and device for switching the communication state of a link aggregation interface, the method including: a user edge CE device determines the link aggregation between the first link aggregation interface of the CE device and the first service edge PE device Whether the link between the interfaces fails; if a link failure occurs, the CE device switches the first link aggregation interface to an inactive state, and connects the CE device to the second PE device. The second link aggregation interface is switched to an active state; the CE device sends a first link aggregation control protocol LACP message to the second PE device through the second link aggregation interface, so that the second PE device according to the The first LACP message switches the link aggregation interface of the second PE to an active state. The link aggregation interface communication state switching method and device provided by the embodiments of the present invention improve the switching speed of inter-device link aggregation.

The invention discloses a high-speed safe virtual network agent method and its system, comprising a virtual network card and a client virtual network card processing module for processing data flowing through the virtual network card; The request data conversion and encapsulation of the virtual network card are sent to the gateway; S20, the gateway receives the data packet in the step S10, and sends the data packet to the application system by the proxy connection after decapsulating the data packet; S30, the application system sends the step The data packet in S20 is returned to the gateway through the proxy connection; S40, the gateway encapsulates the data packet in step S30 and returns it to the client. The high-speed safe virtual network agent method and system thereof of the present invention can efficiently solve the problem of encapsulation and forwarding of data messages.

The invention discloses an embedded unmanned aerial vehicle cluster simulation system based on a high-speed serial bus, which includes a comprehensive control computer and a plurality of simulation devices; each simulation device includes a cluster control module, a flight simulation module, and a 1394b bus module. The module is connected with the 1394b bus module, and is used to receive and analyze cluster control instructions by using the 1394b bus; the cluster control module is interconnected with the flight simulation module through a serial port, and is used to send the analyzed cluster control command to the flight simulation module command and receive the flight state; the flight simulation module runs the digital aircraft model and flight control logic, and is used to receive the swarm control command and calculate the flight state. Each simulation device includes multiple 1394b interfaces for communicating with the integrated control computer and other simulation devices. The invention can realize dynamic expansion of simulation nodes through a flexible interconnection structure, has high integration, and is convenient for portable and mobile deployment.

The present invention proposes a control box for aircraft data forwarding and launch control, wherein: the core board receives the control command from the upper interface connector, analyzes and reorganizes the control command, and then analyzes the control command corresponding to the upper interface connector Make a judgment: if it is a power supply command, the core board supplies power to the external aircraft through the lower interface connector; if it is a control command, the core board transmits the control command through the lower interface connector; the core board receives the external aircraft through the lower interface connector. After the status information of the aircraft, the data is analyzed and reorganized, the status information of the aircraft is updated, and whether there is a failure is judged according to the status of the aircraft: if the external aircraft fails, the core board immediately disconnects the power supply of the aircraft. The invention has the functions of multi-channel control, acquisition, communication, etc. at the same time, and can analyze and reorganize bus data, realize data forwarding between different buses, launch control of aircraft, and power supply control of aircraft.

The invention relates to a data forwarding device, and discloses a geomagnetic data aggregation forwarder which comprises a power supply device, an MCU (Microprogrammed Control Unit) device, a wireless transmission device, a GPRS (General Packet Radio Service) data transmission device and a geomagnetic data reception device, wherein the MCU device is used for realizing energy saving for the power supply of the wireless transmission device, the GPRS data transmission device and the geomagnetic data reception device through controlling to connect or disconnect the power supply device. The geomagnetic data aggregation forwarder has the advantages that the structure is simple, the chip performance requirement of the MCU device is low, preferable energy-saving effect is provided, the geomagnetic data aggregation forwarder is suitable for the applications of long-time data transmission and has higher application value.

The invention provides quick network protocol design and authentication equipment capable of realizing collaborative configuration of hardware and software. The equipment at least comprises an FPGA (Field Programmable Gate Array)-based switching unit and a control unit connected with the switching unit, wherein the switching element is provided with a communication interface connected with network equipment, and is used for separating experimental data and general data both from the network equipment and then forwarding the both correspondingly according to control rules; and the control unit is used for providing a network protocol design platform for designers, offering corresponding control rules for the switching unit according to a designed network protocol, and carrying out authentication for the designed network protocol according to the experimental data received by the switching unit and the forwarded experimental data. The equipment provided by the invention has the advantages that the data forwarding and data control are separated, and a test for a new network communication protocol can be performed without affecting the running of the current network.

The embodiment of the invention provides a method for establishing a virtual channel, a method of data transmission and a line card. The method for establishing the virtual channel is characterized by comprising: establishing a virtual channel which bears data transmission of a control channel and a service channel among line cards in a distributed system, and uniformly using the virtual channel to bear the control channel and the service channel so as to simplify the channel management of the line cards. Meanwhile, the invention provides an efficient scheme of data transmission among line cards based on the virtual channel. In the scheme, each line card maps partial memory to a uniform PCIE (peripheral component interface express) space, data transmission among the line cards can be completed through PCIE memory writing bus transaction; and as the PCIE memory writing bus transaction adopts a Post mode, so that compared with the traditional PCIE channel, the virtual channel provided by the invention has the advantages that the data transmission delay can be reduced and high-performance data forwarding can be realized.

The embodiment of the invention provides an interprocess communication method and equipment, and relates to the field of communication control. Network socket loopback data transmission is used for conducting interprocess communication, communication messages can not work within a system range, and multiplexing or controlling can be facilitated. Meanwhile, a destination address is set to be a network loopback address, data forwarding is achieved on a protocol layer, and the speed of interprocess communication is improved. The interprocess communication method comprises the steps that a first IPC module receives data sent by a first process; the data is packaged to form a data package, the data package comprises a package head and data, and the package head comprises a source address, a port number of a source process, a network loopback address and a port number of a destination process; the data package is sent to an operation system, and the operation system is made to send the data package to a second process according to the destination address and the port number of the destination process; meanwhile, the second process can also sends data to the first process by the interprocess communication method.

The invention discloses an Internet of Things data bus middleware, which is used to realize Internet of Things data forwarding, task scheduling, and scheduling monitoring. The middleware includes a client and a plurality of server ends, and the client encapsulates communication data according to a communication protocol configuration file After the data packet is generated, according to the service configuration of the client, through the communication function of the client, a call is initiated to all the servers, and the server that responds to the call establishes a two-way micro-channel communication service list according to the communication call of the client, and uses the message analysis of the server The module unpacks the received data packet and obtains the message type in the data packet. At the same time, the server that responds to the call uses the load information collection function in the task scheduling module to obtain the load information of other servers and write it into the task assignment forwarding table , and then, combining the load balancing algorithm and the information in the task distribution forwarding table, determine the server that completes the task, connect and call the corresponding external interface of the server, and realize the forwarding of the task.

The present invention relates to the technical field of cloud computing, in particular to the establishment of a three-layer VPN network, a data transmission method, a device, and electronic equipment. The establishment method includes obtaining a creation request for a VPN channel, and the VPN channel is used to connect to a corresponding VPC network. The target VPN gateway corresponding to the local VPN gateway and the target VPC network; according to the creation request, create the local VPN gateway and the VPN channel to obtain the interface information between the local VPN gateway and the local VPC network; based on the interface information between the local VPN gateway and the local VPC network, and form routing rules corresponding to the local VPC network, so as to create the layer-3 VPN network. After obtaining the creation request, create a local VPN gateway and VPN channel, and then form routing rules corresponding to the local VPC network. This three-layer VPN network realizes the decoupling of the VPN gateway and the router, so that the VPN is no longer integrated in the router. This modular design facilitates the development and expansion of network function virtualization.

The invention relates to an electric energy monitoring front end data acquisition device which comprises a power module, a data acquisition module, an operational amplifier, an A / D conversion chip, a control module, an Ethernet controller and a high-speed communication bus. The data acquisition module collects external electric energy signals, one line of output signals of the data acquisition module is conditioned by the operational amplifier in a signal mode and then is transmitted to the A / D conversion chip, after active power filter processing is conducted on another line of the output signals, the another line of the output signals is directly transmitted to the A / D conversion chip, the A / D conversion chip converts the received signals into digital signals, then the digital signals are transmitted to the control module, the control module conducts packing processing on received data, a data package is transmitted to the Ethernet controller, and finally the data package is issued to a control device through the high-speed communication bus. Compared with the prior art, the electric energy monitoring front end data acquisition device has the advantages of being high in data monitoring precision, strong in adaptive capacity, powerful in function, low in power dissipation, convenient to mount, reliable in data transmission, high in communication speed, capable of achieving high-speed networking and the like.

The embodiment of the present application discloses a method, device, server and storage medium for establishing a remote assistance connection, and relates to the field of remote assistance. The method includes: receiving a connection request packet sent by the master control terminal, the connection request packet includes the device information and the target authorization code of the controlled terminal, and the device information and the target authorization code are obtained by the controlled terminal from the control center; according to the device information and the target The authorization code performs authorization verification on the connection request packet; when the connection request packet passes the authorization verification, establish a remote assistance connection with the master, and forward the connection request packet to the controlled end; when receiving the connection request sent by the When receiving a response packet, establish a remote assistance connection with the controlled terminal, and forward the connection response packet to the controlled terminal. Even if the P2P connection cannot be established between the control terminal and the controlled terminal, the control terminal and the controlled terminal can also realize the remote assistance from the control terminal to the controlled terminal through the remote assistance server, thereby breaking through the limitation of remote assistance.