Abstract:
The invention discloses a method for implementing a real-time industrial internet field broadband bus, the method including: determining, by a bus controller, the number of bus terminals connected therewith; and allocating, by the bus controller, time slices for the bus terminals according to the number of bus terminals, and transmitting, by the bus controller, the time slices to the bus terminals so that the bus terminals operate in the allocated time slices. Moreover data are transmitted in the bus system by removing Ethernet/IP message header information to thereby reduce the length of the message, and shorten a transmission delay and a bus scan periodicity so as to improve the real-time characteristic of the bus system.
Abstract:
A time-triggered Ethernet (TTE)-based data transmission method and node device, solving the problem of wasting network bandwidth resources in the prior art during TTE-based data transmission; in the method, a main node determines a scheduling period table based on a time-triggered packet; when a node has a to-be-transmitted event-triggered packet, and the node determines, according to the information stored in the scheduling period table, that a physical link occupied by the event-triggered packet is not in conflict with a physical link corresponding to the current time slot, the node transmits the event-triggered packet in the current time slot. The main node does not need to separately allocate time for the event-triggered packet of each node. Therefore, when a node has a to-be-transmitted event-triggered packet, the node can transmit the event-triggered packet in the current time slot as long as the physical link occupied by the event-triggered packet is not in conflict with the physical link corresponding to the current time slot, thus effectively improving data transmission efficiency and network bandwidth utilization.
Abstract:
Provided are a transparent clock passive port election method and device based on the PTP protocol. In the method, by extracting the TLV field of a received announce message, a first port of a network device acquires the clock identification information, forwarding times information and port identification information carried in the TLV field, and then compares the forwarding times information and clock identification information carried in the TLV field to the forwarding times information carried in the TLV field contained in a received announce message from a port by itself, and its own clock identification information, so as to select a port as a passive port. Therefore, by adding the comparison factors, such as clock identification information, forwarding times information and port identification information, in the TLV field of an announce message, a transparent clock is allowed to support the PTP protocol, thus avoiding a protocol storm formed by a PTP message in a complex topology network and a ring network constituted by the transparent clock to improve the stability of the network.
Abstract:
The application relates to a method and apparatus for controlling and managing a field device using an industry Internet operating system, in this method, an industry cloud server sends a device identifier configuration strategy to an industry field device, so that the industry field device establishes a communication connection with the industry cloud server, generates the identifier of the industry field device, and further generates a list of device information; and the industry cloud server monitors and manages the industry field device over a cloud according to the list of device information sent by the industry field device on its own initiative. In this way, the industry field device can obtain the device identifier automatically without relying upon any specialized hardware device, and report the device information to the industry cloud server on its own initiative.
Abstract:
This application relates to an intelligent traffic cloud control system based central system so as to address the problems of the central system in the relevant art being overloaded, and operating at a low rate. An intelligent traffic cloud control system according to an embodiment of this application at least includes a central system, a plurality of control servers, and a plurality of field devices, wherein the central system is connected with the control servers over a network, and the field devices are connected with the control servers over IP address based broadband buses; and the central system is configured to collect data in one or more of the following data collecting modes: monitoring state data of the control servers in real time, inquiring about data from the control servers in non-real time, and subscribing to data from the control servers as needed.
Abstract:
The disclosure relates to a system implemented on the basis of a field broadband bus architecture of industrial internet, where this system is based upon a two-wire data transmission network widely applied in a traditional industry control system; multi-carrier orthogonal frequency division multiplexing technology is introduced to provide a large bandwidth above hundreds of megahertz; a design of a special frame structure, reasonable static and dynamic configurations of physical layer resource blocks, as well as a scheduling strategy of data services at medium access control layer, achieve proper mapping of transmission services to time slices; and a fast synchronized, real-time, high-speed, and reliable solution is provided with respect to the good performance, high reliability, strict real-time characteristic and high security required by a field broadband bus architecture of industrial internet.
Abstract:
The invention relates to the field of controlling road traffic, and particularly to a method for coordinated control in an intelligent traffic cloud control system, and in the method, a central system can perform global coordinated control, or a control server can perform local coordinated control, and if the control server performs local coordinated control, then the control server can distribute a pertinent coordinated control strategy for a particular condition in a service area, thus alleviating the burden on the central system, and reducing the overall amount of data information to be transmitted in the intelligent traffic system, and also shortening the period of time for transmitting the data information so as to improve the efficiency of generating and enforcing the coordinated control strategy, and to address the problem of a traffic jam at a crossing effectively in a real-time manner.
Abstract:
The present disclosure provides a method and apparatus for managing a field device based on a cloud server. The method includes: obtaining, by a client, a list of devices from the cloud server, and selecting a target device to be managed from the list of devices; generating, by the client, a corresponding virtual device driver according to device information of the target device and configuring a driver parameter of the virtual device driver, and sending the driver parameter to an access server via the cloud server to trigger the access server to configure an interface of the target device according to the driver parameter; and determining, by the client, to establish a communication channel between the client and the target device upon reception of a configuration success message returned from the access server, and managing the target device according to the communication channel.
Abstract:
The application relates to an intelligent traffic cloud control system configured to acquire and centrally analyze a large amount of field data in a traffic system, and to control the traffic system. Unlike a traditional traffic directing and controlling system in such an operating mode that data are acquired and transmitted respectively by different sensing devices, and then collected, analyzed, and processed by a central system, the intelligent traffic cloud control system according to the invention analyzes and processes centrally a large amount of data through field control servers communicating over IP address based broadband buses, and performs adaptive traffic control, traffic regulation enforcement, position tracking, coordinated control, and other service functions through integrating edge computing and cloud computing at a plurality of adjacent field control servers.
Abstract:
The disclosure relates to a data transferring method based on a protection and control system for an intelligent substation. Merging unit and intelligent terminal integrated devices for all bays in an intelligent substation are respectively accessed to corresponding transport ports of an FPGA access chip of an intelligent power server. The method includes: in a reception period, messages are read from a reception buffer clip by a real-time business central processor, subjected to a process and then written into the reception buffer clip; in a transmission period, the real-time business central processor issues indication information to the FPGA access chip, causing the chip to generate messages according to the indication information and write the messages into a transmission buffer.