12-path ebus redundant bus communication device

Abstract

The invention discloses a 12-path eBus redundant bus communication device which comprises a group of three host communication interfaces, three communication main processors, three bus division controllers and a group of 12 redundant data communication interfaces, wherein a host communication interface is used for sending and receiving the data of the communication main processors to a host end; the communication main processors are used for sending the data sent by the host to the 12 redundant data communication interfaces, receiving data from the 12 data communication interfaces and returning the data to the host; the bus division controllers are used for selecting one data interface from the 12 redundant data communication interfaces; and the 12 redundant data communication interfaces are used for communicating with data on an eBus bus node. The three communication main processors perform parallel data communication and are used for data check, failure judgment of the redundant bus and automatic switch to reduce the host load. Through the invention, each bus has a redundancy function, and the stability and real-time performance of the system are improved.

Description

technical field [0001] The invention relates to a multi-channel bus communication device, in particular to a 12-way eBus redundant bus communication device. Background technique [0002] Traditional controllers have fewer IO buses, generally 2 or 4, and each bus has fewer IO modules, and each IO bus is a single bus without redundancy. With the increasing scale and complexity of thermal power units, there are more and more field devices in power plants, and more IO modules need to be invested to connect these field devices, and more controllers are needed to connect IO modules for IO bus Communication, the impact of this change is: 1) The number of DPUs is increased, and the total cost of DPUs is increased. 2) The scale of the network becomes larger, which affects the stability of the network. 3) The traffic of each IO bus increases, affecting real-time performance. 4) The traffic of each IO bus increases. Once one IO module fails, it will affect other modules on the bus. ...

AI Technical Summary

Problems solved by technology

With the increasing scale and complexity of thermal power units, there are more and more field devices in power plants, and more IO modules need to be invested to connect these field devices, and more controllers are needed to connect IO modules for IO bus Communication, the impact of this change is as follows: 1) Increase the number of DPUs and increase the total cost of DPUs

2) The scale of the network becomes larger, which affects the stability of the network

3) The traffic of each IO bus increases, which affects real-time performance

4) The traffic of each IO bus increases. Once one IO module fails, it will affect other modules on the bus

In addition, the traditional controller usually uses an independent IO communication module. The controller communicates with the IO communication module through the network, and the IO communication module communicates with the IO module through the IO bus. The multi-level network and bus structure affect the real-time performance of the system. system stability

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