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Train network communication realization method

An implementation method and train communication technology, applied in the direction of electrical components, transmission systems, etc., to achieve the effects of improving processing efficiency, ensuring integrity, and reducing power consumption

Inactive Publication Date: 2016-03-16
江苏国恩信息科技有限公司
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Problems solved by technology

[0006] Therefore, these structures have limitations on the efficiency of the entire system and the area of ​​the chip.

Method used

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Embodiment

[0024] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0025] A method for implementing a train communication network includes:

[0026] Such as figure 1 As shown, step 1: Divide the train communication data memory into memory block A, memory block B and memory block C. For arbitrations that may have conflicts, the train communication data memory is divided into blocks.

[0027] Step 2: The characteristics of the network nodes of the train communication network are reported to the bus master, and the network nodes are initialized. The bus master reports the characteristics of all network nodes to each component node in the network, and establishes a basic periodic table of network nodes; this table will accompany the entire train The whole process of network communicati...

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Abstract

The invention discloses a train network communication realization method. According to the train network communication realization method, a communication data memory is divided into three blocks, initialization of the train network is carried out, and data communication is carried out according to a set memory address access method. The method is in combination with the characteristic that port data of train communication data has a fixed characteristic period, through the mode that the train communication data memory is divided into the three memory blocks according to different ports, so real-time access of a processor and a bus controller to the train communication data memory can be realized without conflict arbitration, data integrity and redundancy are guaranteed, processing efficiency of the processor is improved, power consumption is reduced, and the chip area is reduced.

Description

technical field [0001] The invention relates to a train communication network method. Background technique [0002] Train Communication Network (Train Communication Network, TCN) is produced with the development direction of modern trains such as high speed, automation and comfort, and is used to transmit and exchange information such as status, control, fault diagnosis, passenger service, etc. and other information. The most widely used TCN standard is the IEC international standard (IEC61375-1), which includes two bus types twisted train bus (WireTrainBus, WTB) and multifunctional vehicle bus (MultifunctionVehicleBus, MVB). Both buses use periodic master-slave protocols to provide three services: process data, message data and monitoring data. Process data is periodic data with strict time constraints and needs to be updated periodically; message data and monitoring data are non-periodic data without strict time requirements and can be transmitted only when the data chan...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
CPCH04L67/12
Inventor 傅伟
Owner 江苏国恩信息科技有限公司
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