34results about How to "Communication will not affect" patented technology

The invention discloses a method for recovering networks in a ring network. Ethernet switch equipment enters a communication status after an initial configuration and precise time synchronization based on an IEEE 1588 protocol. Each equipment according to the configuration of the network sends out time-sharing equipment statement messages and link circuit checking messages. The link circuit checking messages are sent by a multicast address in two ways; if a port of equipment receives no link checking messages of a connected port after the time out, then a network trouble can be determined and link circuit alarm messages are sent by the multicast address in two ways for alarming. The rest equipments in the ring network after receiving the link circuit alarm message, then empty an FDB list and utilize a backup link circuit to restart path learning. By adopting the method of the invention, any communication link circuit failure in the ring network can be quickly detected and correspondingly processed, thereby meeting the availability requirements of Ethernet communication by the industrial automatic field.

The embodiment provides a virtual machine data exchange method comprising steps of: receiving data which is the data a physical host needs to send to a destination node; identifying whether the destination node is the node inside the physical host or outside the physical host based on the data received, wherein if the node is identified as inside the physical host, then a destination virtual network card interface is identified and the next step is sending the data to a corresponding destination virtual machine via a virtual network card corresponding to the destination virtual network card interface, wherein if the node is identified as outside the physical host, then a physical network card interface is identified and the next step is sending the data to the outside of the physical host via a physical network card corresponding to a physical network card interface. The embodiment of the invention also provides corresponding apparatus and systems.

The invention discloses a fire voice indication escaping method via a RFID (Radio Frequency Identification Device) location wireless network. In the method, the earphone type anti-interference voice dynamic induction escaping is carried out for the escapers under the severe fire scene environment of cut-off illumination, smoke and noise in the fire scene, and the anti-interference and the reliability of the indication information are improved. The portable individualized indication method and the wireless network ensures that when the current escape path is blocked due to the fire, the building break-down and the like, a new escape route can be formed, indicates the escapers, can send a deviation correcting indication to the escaper deviating the escape direction to indicate the escaper to return to the correct route. A portable machine in the escaping process can prompt the road condition of the front area with the abnormal road condition in the escape process, thereby reducing the secondary self-hurt possibility, and finally achieving purpose of improving the fire scene survival rate.

The invention discloses a broadband communication network architecture with a shared control and service network for a train. The architecture comprises a trusted network and an untrusted network, wherein the trusted network comprises a trusted vehicle-level network element arranged in each vehicle, and except for the trusted vehicle-level network elements, trusted train-level network elements are respectively arranged in the head train and the trail train; the untrusted network comprises untrusted train-level network elements respectively arranged in the head train and the trail train; one trusted train-level network element communicates with one untrusted train-level network element through a security gateway, and the security gateways are mutually redundant. The network architecture provided by the invention is the network architecture with the shared train control and service network for the train, transmission of the train control, monitoring and diagnosis information, passenger information and video information on the shared network and transmission of a passenger information service system network and a train network on the shared network are realized, so that the requirements for the network bandwidth of the passenger information service system network are met and the stability of the train network is guaranteed.

The present invention discloses a PCIE switching system, an apparatus and an switching method, wherein the system comprises: a plurality of the PCIE is switched to cell switching converter bridges PECB and a plurality of cell switching modules; in each PECB of the plurality of PECB is in communication connection with each cell switching module of the plurality of cell switching modules; the first PECB of the plurality PECB is used for receiving transaction layer pack packets, converting the transaction layer packets into cells, and sending the cells to at least one cell switching module of the plurality of cell switching modules; the at least one cell switching module of the plurality of cell switching modules is used receiving cells sent from the first PECB, and forwarding the cells to a second PECB according to the ID number, which is contained in the cell, of the second PECB in the plurality of PECB. According to the invention, it is possible to improve the reliability of the PCIE switching system, and solve the problem of bandwidth bottleneck between switches.

The present invention relates to a display performance testing method, a system and a display performance testing device. The method comprises a step of receiving the testing instruction of testing display equipment display performance, wherein the testing instruction comprises the signal channel of the display equipment, a signal source and a testing process, a step of selecting the signal channel of the display equipment according to the testing instruction and controlling the display equipment to obtain a test image from a corresponding signal source through the signal channel, a step of shooting the displayed test image to obtain a first shooting image, and a step of carrying out display performance testing on the corresponding display equipment according to the testing process and the first shooting image and outputting the testing result of the display performance testing. According to the display performance testing method, the system and the display performance testing device, the automation of the display performance testing process can be realized, and the testing efficiency of the display equipment is improved.

The invention relates to a train operation control method and device and a computer readable medium, and the method comprises the steps: providing a first communication channel which is directly connected with a train head safety computer and a train tail safety computer; providing a second communication channel, wherein the second communication channel connects the vehicle head safety computer tothe vehicle tail safety computer through a vehicle head vehicle-mounted wireless communication unit and a vehicle tail vehicle-mounted wireless communication unit; determining main and standby statesof the vehicle head safety computer and the vehicle tail safety computer; and when the host in the vehicle head safety computer and the vehicle tail safety computer fails, switching to the standby machine in the vehicle head safety computer and the vehicle tail safety computer. The train operation control method and the train operation control device have a dual-computer hot standby redundant architecture, so that the safety computers at the head and the tail of the train can be switched between the main computer and the standby computer, and normal operation of a train operation system is facilitated.

The invention discloses an annular communication network of an urban rail train. The annular communication network comprises two or more than two annular local area networks which are independently communicated with each other; each annular local area network is formed by exchangers through communication connection, wherein the exchangers are arranged in compartments of the urban rail train respectively; the annular networks are separated into the local area networks which are independently communicated with each other through the configuration on ports of the exchangers so as to transmit different types of data. According to the annular communication network of the urban rail train, train operation state data, train diagnostic data and train operation control instructions can be transmitted, the safety, the real-time performance and the reliability of the network communication in a train are enhanced, and accordingly the development of the subsequent extension application such as the remote update of equipment applications, the train informatization and intellectualization and the multimedia data transmission in the train can be possible.

The invention relates to a vehicle-mounted network system and a communication method thereof. The vehicle-mounted network system comprises a signal system device, a TCMS device, other vehicle-mountednetwork subsystem devices and two mutually independent subnetworks. The signal system equipment is directly connected to the first sub-network A and the second sub-network B respectively. The TCMS device and other vehicle-mounted network subsystem devices are classified into key subsystem equipments with high security level and common subsystem equipments with low security level according to security level, The key subsystem equipment is connected to the first subnetwork A and the second subnetwork B through two or more communication interfaces, and the common subsystem equipment is directly connected to the first subnetwork A or / and the second subnetwork B. The invention integrates the signal system network and the TCMS network into the same network, reduces the complexity of the vehicle-mounted network system and reduces the fault point of the system. The two sub-networks are hot-standby each other, which can ensure that the normal operation of on-board network equipment is not be affected when any one of them has an irrecoverable failure.

The invention relates to a measurement and control communication management machine for a photovoltaic box transformer substation. The management machine is suitable for intelligent control and communication management of box transformer substations in photovoltaic power stations of non-direct grounding systems or low-resistance grounding systems of 35kV or below. With the measurement and control communication management machine for the photovoltaic box transformer substation adopted, analog quantity acquisition, non-electric quantity protection, remote control and communication functions can be realized at the high and low-voltage side of the box transformer substation. The measurement and control communication management machine integrates the functions of a communication management machine and an optical fiber switch; the measurement and control communication management machine can be connected into equipment such as an inverter, a junction box, an assembly monitor, a video monitoring and a radiation instrument, and therefore, centralized transmission of communication information in the intelligent equipment in the box transformer substation can be realized. The measurement and control communication management machine can be connected into a photovoltaic power plant monitoring system through a self-healing ring fiber, and therefore, remote management and automatic monitoring of a photovoltaic field can be realized, and a fully-intelligent and unattended operation and management mode of the photovoltaic power stations, which requires few workers to guard the photovoltaic power stations, can be satisfied.

The invention discloses a tree-like CAN (controller area network) bus communication control network for a high-altitude fire truck. The tree-like CAN bus communication control network comprises a plurality of optical fiber CAN bus communication hubs connected in a tree-like topological structure distribution manner, the optical fiber CAN bus communication hubs are connected through optical fibers, a plurality of CAN nodes of a high-altitude fire truck control system are integrated in a sub-network by each CAN bus communication hubs, CAN bus node signals in sub-networks are transmitted by twisted pairs with shielding layers, the problem of difficulty in data exchange among buses and among different bus nodes in the prior art is solved, the optical fibers are used for transmitting data, corresponding electromagnetic interference is avoided, signal delay and attenuation are decreased, wiring of platform nodes is facilitated, communication of other sub-networks in the whole control network cannot be affected when parts of lines are disconnected, and the tree-like CAN bus communication control network is applicable to the high-altitude fire truck and has a fine application prospect.

The invention relates to the technical field of cloud computing, in particular to a method for implementing a distributed router suitable for cloud computing. The steps of the present invention are as follows: 1, each calculation node creates three network bridges; 2, the calculation node creates an isolated virtual network space for each network, and adds a network interface to connect to the internal network bridge, and starts in the virtual network space dhcp service. 3. Each computing node creates a new network space for multiple networks of the same tenant that need to communicate, named it a routing network space, and adds a network port to the routing network space for each network as a gateway; The gateway is set to the same mac and ip. 4. When creating a virtual machine, update the arp table of the routing network space accordingly and connect to the internal bridge. 5. Set flow rules on the internal bridge and intranet bridge. The invention solves the problem of single-point failure and large load of virtual machine network; it can be used for realization of distributed router of cloud computing.

The invention discloses a self-check power supply device hung to a fire fighting bus, which is mainly used to solve the problem that an external control power supply cannot be supervised in the prior art. The self-check power supply device comprises a transparent transmission module, a bus interface circuit, an MCU, a control module, a power supply module, a voltage and current detection module, and a battery module. The transparent transmission module is hung to a fire fighting bus, and connected with the power supply module. The bus interface circuit is connected with the fire fighting bus and the MCU. The MCU is connected with the control module. The control module is connected with the power supply module. The voltage and current detection module is connected with the power supply module and the MCU. The battery module is connected with the power supply module. Through the scheme, the self-check power supply device has such advantages as reliable power supply, real-time monitoring, lower patrol workload and good expansion performance, and has very high practical value and promotion value in the technical field of fire fighting.

The invention relates to a mobile terminal shell, a mobile terminal and a smart hole network system. The mobile terminal shell comprises a wireless module and a power supply module which are arrangedon the mobile terminal shell, wherein the wireless module is applicable to carry out communication with a control terminal of a smart home network and output corresponding position prompt informationwhen receiving a control instruction of searching a mobile terminal, which is sent by the control terminal of the smart home network; and the power supply module is connected with the wireless moduleand is applicable to supply power to the wireless module. By the scheme, the difficulty that a user searches a mobile phone can be reduced, and user experience is improved.

The invention discloses an intelligent gate level meter with a dual-bus communication redundancy and remote control function. The intelligent gate level meter comprises a data acquisition, data operation and communication module and an input-output control and data display module which are arranged in one shell. The intelligent gate level meter has a reasonable structure, and integrates multiple functions of gate openness detection, data processing, opening-closing control, communication and the like. A layered distributed gate automatic remote control system can be conveniently formed, therefore, gate descending and ascending control and various protection measure programs are embedded inside the intelligent gate level meter, control units such as a PLC can not be used, programming is not used, and a gate automatic remote control function can be realized. The gate automatic central control system has the advantages of simple structure, convenience for maintenance and lower investment.

The present invention relates to a display performance testing method, a system and a display performance testing device. The method comprises a step of receiving the testing instruction of testing display equipment display performance, wherein the testing instruction comprises the signal channel of the display equipment, a signal source and a testing process, a step of selecting the signal channel of the display equipment according to the testing instruction and controlling the display equipment to obtain a test image from a corresponding signal source through the signal channel, a step of shooting the displayed test image to obtain a first shooting image, and a step of carrying out display performance testing on the corresponding display equipment according to the testing process and the first shooting image and outputting the testing result of the display performance testing. According to the display performance testing method, the system and the display performance testing device, the automation of the display performance testing process can be realized, and the testing efficiency of the display equipment is improved.

The invention relates to a RS422 transmitting-receiving bidirectional monitoring circuit. The RS422 transmitting-receiving bidirectional monitoring circuit comprises transmitting-receiving chips U1-U4, and control triodes Q1 and Q2, wherein a pin A and a pin B of the U1 are connected to a positive end and a negative end of a signal transmitting party respectively; a pin RO of the U1 is connected to a pin DI of the U3; a pin RO of the U1 is connected to the base electrode of the Q1 through a current limiting resistor R1; the collector electrode of the Q1 is connected to a pin RE# and a pin DE of the U3; a pin A and a pin B of the U2 are connected to a positive end and a negative end of a signal receiving party; a pin RO of the U2 is connected to a pin DI of the U4; a pin RO of the U2 is connected to the base electrode of the Q2 through a current limiting resistor R2. According to the invention, a TTL (Transistor-Transistor Logic) signal is divided into two portions for treatment, one portion serves as a communication signal while the other portion forms a control signal for transmitting-receiving DEs (Decision Element) of the U3 and the U4 through a control circuit. The whole circuit is very simple, the operation is steady and efficient, the data in both the transmitting and receiving directions of a serial port are monitored at the same time, and communication of the monitored serial port is not affected.

The invention discloses a method for recovering networks in a ring network. Ethernet switch equipment enters a communication status after an initial configuration and precise time synchronization based on an IEEE 1588 protocol. Each equipment according to the configuration of the network sends out time-sharing equipment statement messages and link circuit checking messages. The link circuit checking messages are sent by a multicast address in two ways; if a port of equipment receives no link checking messages of a connected port after the time out, then a network trouble can be determined andlink circuit alarm messages are sent by the multicast address in two ways for alarming. The rest equipments in the ring network after receiving the link circuit alarm message, then empty an FDB list and utilize a backup link circuit to restart path learning. By adopting the method of the invention, any communication link circuit failure in the ring network can be quickly detected and correspondingly processed, thereby meeting the availability requirements of Ethernet communication by the industrial automatic field.

This invention relates to an infrared light dimmer assembly used in mobile phone, which includes the infrared device and infrared light dimmer, wherein the infrared light dimmer is arranged on the infrared device, which matches with the mobile phone hull, and the infrared light dimmer includes base board, and the radiating area of the base board and infrared device is the plane.

An embodiment of the present invention provides a data exchange method for a virtual machine, including: obtaining data that needs to be sent to a destination node in a physical host, and determining whether the destination node is a node in the physical host or a node outside the physical host according to the data, if If it is a node in the physical host, then determine the destination virtual network card interface, and send the data to the corresponding destination virtual machine through the virtual network card corresponding to the destination virtual network card interface, if it is a node outside the physical host, then determine the physical network card interface, and send the data to the outside of the physical host through the physical network card corresponding to the physical network card interface. In addition, embodiments of the present invention also provide corresponding devices and systems.

The invention discloses a method for interactively sharing an SPI communication bus through embedded system multiple processes. The method comprises the following steps: (1) a system is initialized and the processes are built; (2) all kinds of SPI information are marked one by one by the system; (3) the processes respectively register required SPI information for the system; and (4) SPI information is respectively sent to each corresponding process by the system according to marks of the received SPI information. The method for interactively sharing the SPI communication bus through the embedded system multiple processes has the advantages that each process of an application layer is respectivley provided with an independent SPI communication queue, can respectivley register SPI information focused by the process according to requirements, and does not need to process interaction of other SPI information. Single-process SPI communication is not limited by other processes any more, whether the SPI information needs processing or not is completely not affected by other processes, and building of a process and exiting of the process are not affected by other processes. If an SPI information queue of a process is blocked, communication of other processes is completely not affected, and therefore system stability is improved.

The invention discloses a serial port multi-computer communication circuit and a serial port multi-computer communication method, and solves the problems that the existing multi-computer communication method has high requirements on software design of a master computer and a slave computer, and the communication process is tedious. The circuit comprises a host, an AND gate logic chip, a 16-bit bus transceiver and two slaves, the 16-bit bus transceiver is composed of two data transceivers; wherein each data transceiver is provided with a control port OE and a control port DIR; when the host sends data to one of the slaves, the control port OE of one of the data transceivers is controlled to be at a low level and the control port DIR is controlled to be at a high level through the universal port of the host, and meanwhile, the control port OE of the other data transceiver is controlled to be at a high level; and when the host receives the data of one of the slaves, the control port OE of one of the data transceivers is controlled to be at a low level through the universal port of the host, the control port DIR is controlled to be at a low level, and meanwhile, the control port OE of the other data transceiver is controlled to be at a high level.

A network-on-chip-based optimization method for DRAM communication comprises the following steps: step 1 , adopting a multi-port SRAM (Static Random Access Memory) to design a multi-port large cache for each input port, adopting the multi-port SRAM as the data cache of PE to construct a plurality of VCs (Virtual Channel) with configurable numbers and depths; step 2, adopting SPQ (Strict Priority Request) method to set transmission priority, namely setting communication between a node and the DRAM as the highest priority, setting inter-nodes communication as the secondary highest priority, providing service for the highest priority first until finished, then providing service for the secondary highest priority. The network-on-chip-based optimization method increases the utility ratio of a memorizer, reduces delay of the whole system, can effectively improve communication quality with an off-chip DRAM, and does not influence the on-chip inter-nodes communication.

The invention discloses an entrance-exit control circuit comprises a main control board circuit. The main control board circuit comprises a network interaction control circuit having a main control chip, a network transformer circuit, a network protection circuit, an RJ45 interface circuit and a main control chip power source circuit, the network interaction control circuit is electrically connected with the network transformer circuit which is electrically connected with the network protection circuit, and the network protection circuit is electrically connected with the RJ45 interface circuit; the network interaction control circuit further comprises an internal voltage compensation circuit, a clock circuit, a working indication circuit, a filter circuit, a resetting circuit and an impedance matching circuit which are electrically connected with the main control chip, and the network transformer circuit is connected with the impedance matching circuit. The main control chip is made to directly control a network switchboard chip, multiple RJ45 interfaces are provided, and network switchboard equipment in the middle is removed, so that cost is lowered, assembly space is reduced, wiring is simple, convenience is brought to mounting and maintaining, and overall performance of equipment is improved.

This invention relates to an infrared light dimmer assembly used in mobile phone, which includes the infrared device and infrared light dimmer, wherein the infrared light dimmer is arranged on the infrared device, which matches with the mobile phone hull, and the infrared light dimmer includes base board, and the radiating area of the base board and infrared device is the plane.

Provided is a multimedia communication device which enables multimedia communication to be realized at any time and in any place. The multimedia communication device comprises a signal interface module, a multimedia module and a data processing module and is characterized in that the signal interface module includes a wireless transmitting and receiving module which is used for receiving and transmitting data, transmitting received signals and data to the data processing module, transmitting received multimedia data to the multimedia module and wirelessly transmitting data from the multimedia module and / or the data processing module to other communication equipment. According to the invention, the multimedia communication device can form a network and requires no fixed base station or satellite link, failure at any one point does not influence communication of other nodes, and the device is convenient to move in field conditions.

The invention discloses an annular communication network of an urban rail train. The annular communication network comprises two or more than two annular local area networks which are independently communicated with each other; each annular local area network is formed by exchangers through communication connection, wherein the exchangers are arranged in compartments of the urban rail train respectively; the annular networks are separated into the local area networks which are independently communicated with each other through the configuration on ports of the exchangers so as to transmit different types of data. According to the annular communication network of the urban rail train, train operation state data, train diagnostic data and train operation control instructions can be transmitted, the safety, the real-time performance and the reliability of the network communication in a train are enhanced, and accordingly the development of the subsequent extension application such as the remote update of equipment applications, the train informatization and intellectualization and the multimedia data transmission in the train can be possible.

The invention discloses an intelligent gate level meter with a dual-bus communication redundancy and remote control function. The intelligent gate level meter comprises a data acquisition, data operation and communication module and an input-output control and data display module which are arranged in one shell. The intelligent gate level meter has a reasonable structure, and integrates multiple functions of gate openness detection, data processing, opening-closing control, communication and the like. A layered distributed gate automatic remote control system can be conveniently formed, therefore, gate descending and ascending control and various protection measure programs are embedded inside the intelligent gate level meter, control units such as a PLC can not be used, programming is not used, and a gate automatic remote control function can be realized. The gate automatic central control system has the advantages of simple structure, convenience for maintenance and lower investment.