26 results about "Ethernet" patented technology

A memory alignment system for efficient data transfer between a host system and a remote system comprises a data communications controller configured to align transmitted and received data based on formatting information received from the host system. When transmitting data from local system memory, for example over an Ethernet connection, communications control driver software may first write formatting information corresponding to the data into a configurable transmit data buffer. The data communications controller is operable to align the data based on the formatting information as the driver software moves the data into the transmit data buffer. Similarly, the driver software may write formatting information for receive data into a receive-format configuration buffer. The data communications controller may align the receive data based on the receive-formatting information as the receive data is being written into a configurable receive buffer. As the data communications controller performs all the required data alignment, no data alignment by the host processor is required.

A technique is disclosed that allows different computers in a network to create an identifier that uniquely identifies the network. The technique allows the unique identifier to be consistently created over time, regardless of the particular make up of the computing devices in the network at any particular point time. In some implementation, a computer within the network hosts the identification creation tool. In order to create a unique identifier for the network, the tool identifies each network adapter used by the host computer. Using this information, the tool identifies a gateway device used by the network adapter or adapters, and then determines the physical network address of that gateway device. For example, if the network is an Ethernet network, the tool will determine the medial access control (MAC) address for the gateway device. The tool then creates a unique identifier for the network based upon the physical address. The unique network identifier can then be used to associate the billing a usage fee, such as a licensing fee, with the network rather than with an individual computer within the network. Alternately or additionally, the unique network identifier can be used to maintain and support the gateway device for the network.

Provided is a method of localizing rack-mounted computing devices, the method comprising: receiving, with a direct current (DC) power bus or via an Ethernet control network or data network, a request from a control unit for a rack computing device location; generating, with a sensor, output signals conveying information related to a location of the rack-mounted computing device; and sending, with the direct current (DC) power bus or via an Ethernet control network or data network, location information of the rack-mounted computing device.

This invention provides a fault indication technology used to Ethernet optical fiber transceiver. It includes following step: adds the control circuit in the transceiver, the control circuit is used to test and control the working state of Ethernet electrical interface and optical interface. To implement the fault indication, the control circuit connects to the interface circuit of Ethernet through the LINK signal, through connecting SD and TX-DIS with the optical interface circuit of Ethernet, makes real time test to the state of receiving the optical signal in the optical fiber interface and the state of network connection in the RJ45 interface, and reports the working state of the link according to the result of testing. The control circuit implements the report of the fault indication to the remote equipment through controlling the working state of the optical fiber sending circuit.

The invention relates to a multi-protocol network convergence information exchanger. The multi-protocol network convergence information exchanger comprises a Zigbee coordinator, a Bluetooth gateway and an ARM processor, wherein the Zigbee coordinator is used for monitoring Zigbee broadcast data packets of wireless sensor nodes in a Zigbee network and transmitting the analyzed Zigbee broadcast data packets to the ARM processor, the Bluetooth gateway is used for monitoring Bluetooth broadcast data packets of Bluetooth devices in a Bluetooth network and transmitting the analyzed Bluetooth broadcast data packets to the ARM processor, and the ARM processor is used for converting the Zigbee broadcast data packets and the Bluetooth broadcast data packets into data in the TCP/IP format, and transmitting the data in the TCP/IP format to the internet through an Ethernet interface. The multi-protocol network convergence information exchanger can adapt to a multi-protocol sensor network coexistence environment, solve the problem of channel interference and set up interconnection and interworking with a high-speed Internet.

The invention provides a method for extending data transmission distance of an Ethernet switch. The method includes the steps that S1, a PHY (physical layer) unit sends a negotiation pulse signal with an auto-negotiation announcement fixed as duplexing modes at a 10M-half-duplex speed and a 10M-full-deplex speed, to a long-distance transmission port; S2, the PHY unit negotiates both links to be in a 10M-stable-speed transmission mode; S3, an MAC (media access control) unit starts a flow control mode for the long-distance transmission port and stops a flow control mode for an upper connection port. The invention further provides a system for extending the data transmission distance of the Ethernet switch. The method and the system for extending the data transmission distance of the Ethernet switch have the advantages that insusceptibility to unstable connection caused by poor-quality network cables or a need for a long network cable for long-distance transmission in practical environments can be guaranteed for users, widespread onsite data transmission abnormity problems can be solved for the users rapidly, and great social and economic value is obtained.

The invention relates to a control system and a control method for the rotating speed of a motor spindle of a numerical control system. The control system comprises an embedded Linux numerical control system master station and a numerical control system slave station which are in communication connection through an Ethernet control automation technology (EtherCAT) communication protocol bus, wherein the embedded Linux numerical control system master station periodically sends a speed command value to a servo device of the numerical control system slave station through a soft circuit layer to control the motor to rotate according to the speed command value; and the servo device of the numerical control system slave station periodically feeds a speed feedback value back to the embedded Linux numerical control system master station, so that a full closed loop control system is formed. A closed loop control method is adopted, the system and the method are basically free from interference, high in stability and transmission speed and low in failure rate, the circulation time of full closed loop control reaches 1mu s, control accuracy can reach 1nm, the rotating speed of the motor spindle reaches 16,000rpm, and stability and reliability are ensured.

The invention discloses an Ethernet-based unmanned aerial vehicle formation flight control data link system and belonging to the technical field of unmanned aerial vehicle formation control. The Ethernet-based unmanned aerial vehicle formation flight control data link system includes a ground station computer, a wireless data transmission ground terminal and a wireless data transmission airborne terminal. The wireless data transmission airborne terminal is mounted on an unmanned aerial vehicle and connected to a serial port of the airborne computer of the unmanned aerial vehicle. The wirelessdata transmission ground terminal and the wireless data transmission airborne terminal form a one-to-one communication link, and the wireless data transmission ground terminal is connected to an Ethernet serial port server through a serial port level conversion module, and the Ethernet serial port server and the ground station computer are respectively connected to an Ethernet switch through a network cable to form an Ethernet local area network. According to the Ethernet-based unmanned aerial vehicle formation flight control data link system, mature hardware, such as wireless data transmission, the serial port server and the Ethernet switch, is selected for construction to provide a data chain solution with reliable work, strong performance and controllable cost for an unmanned aerial vehicle formation operation control system.

The invention discloses a service data communication method and system for an Ethernet switch. The method comprises the steps of packaging a private Ethernet head for received service data through a switching chip driver, transmitting the service data to a decision device, and enabling the decision device to distribute the service data packaged with the private Ethernet head to three heterogeneousprocessors; and enabling the heterogeneous processor to extract the service data by removing the private Ethernet head, and distribute the extracted service data to the corresponding application program. According to the invention, a protocol stack can be operated on three heterogeneous processors, and the switching chip drives the service data communication of the Ethernet switch operated on theother processor.

The invention is suitable for the technical field of vehicles, and provides a vehicle information transmission method and device, electronic equipment and a storage medium. The method comprises the steps: obtaining a data obtaining request sent by an upper computer in a first communication format; analyzing the data collection request, and determining a to-be-communicated target ECU and to-be-collected target ECU data; according to the target ECU data, generating a data request message in a second communication format corresponding to the target ECU, and sending the data request message to the target ECU; receiving a response message sent by the target ECU based on the data request message; and analyzing the response message to obtain target ECU data, converting the target ECU data into reply information in the first communication format, and sending the reply information to the upper computer. According to the scheme, the requirement for professional knowledge of developers during vehicle data collection based on the vehicle-mounted Ethernet is lowered, and the development difficulty of upper computer software is lowered.

The invention discloses a machine tool energy consumption monitoring system and method, the machine tool energy consumption monitoring system comprises a client, a server, an energy consumption monitoring system and a central processing module, bidirectional connection between the client and the server is realized through the Ethernet, and the invention relates to the technical field of energy consumption monitoring. According to the machine tool energy consumption monitoring system and method, the energy consumption of the machine tool is monitored in an indirect measurement mode, an energy consumption curve graph during working of the machine tool is generated, the machine tool can be kept in a stable energy consumption state through a modeling test unit, so that the service life of themachine tool is guaranteed, and the energy consumption of the machine tool is monitored in real time. In the calculation of the modeling test unit, the optimal working state of the machine tool is obtained according to the energy consumption and the output of the machine tool, and then the operation guidance is performed through the maintenance guidance module, so that the optimal output under thecondition of lower energy consumption is realized, and the system has the advantages of cost reduction, benefit increase, more comprehensive functions and better fit with the core of sustainable manufacturing and green manufacturing for enterprises.

The invention discloses a safety distribution board monitored based on the wireless sensor technology. The safety distribution board comprises a power supply distributor and three power distributors. Each power distributor is composed of an electric control circuit, a frequency conversion controller, a pumping unit intelligent intermittent pumping controller, a wireless sensor module, a data acquisition module, a figure testing sensor, a digital pressure sensor, a digital temperature sensor and a three-phase power acquisition module. The wireless sensor module includes an ARM microprocessor and a remote monitoring center. The ARM microprocessor is connected to a GPRS module through an RS232 interface, and the GPRS module is connected to the remote monitoring center via a GPRS network. The e ARM microprocessor is connected to an Ethernet gateway through an Ethernet interface, and the Ethernet gateway is connected to the remote monitoring center via the Internet. According to the invention, data acquisition is reliable, analysis of the working condition is accurate, frequency adjustment is scientific, and field application is stable. Energy saving is achieved, and the efficiency of the pumping system is improved. Moreover, wireless remote monitoring is realized, and the safety of underground work is ensured.

The invention relates to a small-flow network transmission electronic monitoring system, which comprises an installation hood, a video camera and a client terminal, wherein the video camera driven by a horizontal rotary motor and a vertical rotary motor is arranged in the installation hood; a web server is provided with an Ethernet port and arranged in the video camera; and the client terminal is connected with the web server through the network. The small-flow network transmission electronic monitoring system is characterized in that a data storage hard disc is further arranged in the video camera; the data input end of the data storage hard disc is connected with the video camera; and the data output end of the data storage hard disc is connected with the input end of connection data of the web server. Because the data storage hard disc is arranged in the video camera, the network transmission and invoking of the video can be carried out as required, the requirement of downloading all videos is cancelled, the wireless flow is reduced, and the utilization expense is lowered.

The invention provides a centralized automotive electronic and electrical architecture construction method, a topological structure and a storage medium. The method comprises the following steps: dividing a whole vehicle area into a plurality of sub-areas; an I/O gateway is installed in each sub-region, and each electronic control unit in the sub-region is in communication connection with the I/O gateway in the sub-region through a CAN line; and each I/O gateway is in communication connection with the vehicle-mounted central gateway through a vehicle-mounted Ethernet. According to the centralized automotive electronic and electrical architecture building method, the topological structure of the automotive electronic and electrical architecture is simplified, the number of terminal sensors is optimized, the weight of wire harnesses is reduced, energy consumption is reduced, cost is saved, the vehicle-mounted Ethernet is adopted in a whole vehicle backbone network, and service-oriented SOME/IP communication can be achieved.

The invention discloses an audio and video data transmission method fusing MESH and IP networks. The audio and video transmission method is based on the following system: a terminal device, an audio and video server and an audio and video client software module, wherein the terminal device integrates an audio and video encoding and decoding module and a gateway module and is provided with an audio and video interface and an IP network interface, the gateway module comprises an MESH network unit and an IP network unit; the MESH network unit of the gateway module maps a standard Ethernet two-layer interface and is bridged with a two-layer interface of the IP network unit; the audio and video encoding and decoding module of the terminal device transmits audio and video data to the gateway module of the terminal device in the form of an IP data packet; the gateway module of the terminal device transmits the audio and video data according to a set working mode; and if the working mode is set as a gateway mode, the IP network unit routes the audio and video data to an audio and video server of a public IP network.

The invention discloses a multifunctional multiplexer of a scatter communication system. The multifunctional multiplexer is composed of parts including a simulation user module, a media compression module, a main controller module, a scatter modem interface module and the like. The scatter modem interface module is responsible for protocol processing of the overall multifunctional multiplexer andservice adaptive transmission processing of an equipment channel of the overall equipment. A sent frame structure is dynamically adjusted according to the current voice usage time slot occupation condition. Once adjusting of a sending end is completed, a receiving back end dynamically adjusts the received frame structure according to the frame structure condition of the sending terminal, and thenthe overall communication lossless adaptive switching is completed. The multifunctional multiplexer meets the mixed transmission and adaptive transmission requirements of SIP-based voices and Ethernetservices in the scatter channel, has the advantages of being easy to set and high in integration level and achieving multiple transmission speeds and has a broad application prospect in the scatter communication system.

The invention discloses a control box and an informatization printing process. The control box comprises a shell. A circuit board is arranged in the shell. The circuit board comprises an MCU module, an AC-DC module, a power management module, a storage module, an Ethernet interface module, an RS232 interface module, an RS485 interface module, a relay interface module, a switching value interface module, a 4-20MA interface module, a 0-10V interface module, a DI/DO interface, an IIC interface and an SIP interface. The AC-DC module, the power management module, the storage module, the Ethernet interface module, the RS232 interface module, the RS485 interface module, the relay interface module, the switching value interface module, the 4-20MA interface module and the 0-10V interface module areelectrically connected with the MCU module. The DI/DO interface, the IIC interface and the SIP interface are the interfaces of the MCU module. The control box is used for collecting parameters of a printing machine and controlling the printing machine, and is further used for connecting the printing machine and an upper platform.

The invention discloses a data concentrator for an electric power operation and maintenance system. The system comprises an upper shell and a bottom shell. The upper shell and the bottom shell are connected in a clamped mode, and are locked through screws. A display screen is mounted on the surface of the upper shell. A function button area is arranged below the display screen. A plurality of function buttons are arranged in the function button area. One side of the function button area is provided with an alarm horn and an alarm indicating lamp. One side of the bottom shell is provided with adata interface, a USB interface and a power interface. A circuit board is installed in a cavity defined by the upper shell and the bottom shell, a main control chip, a data collector unit, a data preprocessing unit, a cache unit, an Ethernet unit and a wireless communication unit are installed on the circuit board. The data concentrator is simple in working principle, and rapid collection and transmission of electric power operation and maintenance data can be achieved, and the background monitoring efficiency is improved.