33results 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 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 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 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 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 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.

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.

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.

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.