Collecting and distributing large capacity field high-speed real-time redundance communicating method and system thereof

A technology of real-time data and redundant communication, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve the problems of anti-interference ability decline, data exchange error, limit the number of cards, etc., to ensure communication reliability , improve reliability, and meet real-time effects

Inactive Publication Date: 2006-08-02
吴胜华 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The shortcomings of this monitoring system are: 1. There are too many communication servers and the cost is high; 2. Data exchange is carried out between the communication servers and their respective I/O cards through

Method used

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  • Collecting and distributing large capacity field high-speed real-time redundance communicating method and system thereof
  • Collecting and distributing large capacity field high-speed real-time redundance communicating method and system thereof
  • Collecting and distributing large capacity field high-speed real-time redundance communicating method and system thereof

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Example Embodiment

[0023] Control figure 1 This embodiment is a distributed control system, which includes two communication servers, two control stations and a number of I / O cards. The two control stations are respectively connected to a communication server through a bus expansion unit, and the two control stations are connected through a data synchronization line to form a pair of mutually redundant field control units. Each communication server is equipped with a dual-port RAM (external data storage), and its corresponding control station performs read and write operations on the external data storage through the bus expansion unit. The two communication servers and several I / O cards are respectively provided with two communication ports, and each communication port is connected to two independent and mutually redundant I / O layer networks through shielded twisted-pair cables.

[0024] The control station in this embodiment adopts an industrial computer, and its operating system is DOS 6.0, and ...

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Abstract

The present invention relates to a collective and distributive type large-capacity field high-speed real-time data redundancy communication method and its system. Said method includes the following steps: writing card configuration information into external data memory correspondent to communication server, scanning I/O card, creating state information for it, writing the above-mentioned scanning information and state information into the external data memory, control station and communication server exchange data information, communication server can inquire stata information of all the I/O cards and count the number of abnormal communication, when the number of abnormal communication is less than set value, making next communication scanning, when it is greater than set value, executing change-over of field control unit. Its correspondent system includes communication server, control station and several I/O cards.

Description

technical field [0001] The invention relates to the monitoring of a distributed control system, and more specifically relates to a distributed large-capacity on-site high-speed real-time data redundancy communication method and a system thereof. Background technique [0002] In the distributed (large and medium-sized distributed) control systems such as substation automation systems and hydropower station automation systems, it often involves the monitoring and control of a large number of equipment states. These device states may be analog signal input, analog signal output, switch input, switch output, pulse input, etc. In the prior art, most of the monitoring and control of the equipment status of the above-mentioned distributed control system are realized by the DCS system. The network architecture of the system is as follows: image 3 As shown, this is a network node that completely handles on-site I / O and realizes direct digital control functions. Multiple on-site I / O...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 吴胜华杨卫民章素华
Owner 吴胜华
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