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RS485-multifunction vehicle bus (RS485-MVB) gateway based on VxWorks

A technology of RS485-MVB and RS485, applied in the field of RS485-MVB gateway based on VXWORKS, can solve problems such as data communication confusion

Inactive Publication Date: 2012-05-16
毛强
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

TCN network is more and more accepted by manufacturers and users all over the world, but there are still some other fieldbus technologies that are also applied in some rolling stock, such as CAN bus and RS485 bus, etc., so there are many different fieldbuses The problem of communication interconnection, causing data communication confusion

Method used

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  • RS485-multifunction vehicle bus (RS485-MVB) gateway based on VxWorks
  • RS485-multifunction vehicle bus (RS485-MVB) gateway based on VxWorks

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Embodiment Construction

[0008] RS485-MVB gateway hardware system includes CPU subsystem, memory subsystem, MVB communication subsystem, power supply subsystem, and other communication interface subsystems; its structural feature is to use 32-bit RISCCOLDFIRE processor to construct the gateway, and run VXWORKS embedded real-time operation System; RS485-MVB gateway is connected with RS485 communication equipment through RS485 bus, and after conversion of communication protocol, it is connected to MVB network through standard MVB interface.

[0009] The CPU uses a 32-bit COLDFRIE embedded processor MCF5235 with a main frequency of 150MHz; the FLASH in the memory subsystem uses a 16M 28F128J3A, which is used as a board-level support package BSP, VXWORKS program, MVB software module, ISAGRAF application program, Storage place for RS485 software modules, fault data, etc.; MVB communication subsystem hardware provides a connection channel for RS485-MVB gateway to communicate with MVB bus, which includes MVB ...

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Abstract

The invention discloses an RS485-multifunction vehicle bus (RS485-MVB) gateway based on application of a VxWorks operating system to a train. The invention provides the RS485-MVB gateway based on VxWorks, the gateway can be comprehensively applied to a communication interlink between an RS485 bus and an MVB bus and has the advantages of stable and reliable performance and low communication error rate. The technical scheme provided by the invention comprises that: the hardware system of the RS485-MVB gateway comprises a central processing unit (CPU) subsystem, a memory subsystem, an MVB communication subsystem, a power supply subsystem and other communication interface subsystems; a 32-bit reduced instruction set computer (RISC) COLDFIRE processor is adopted to construct the gateway and operate a VxWorks embedded real-time operating system; and the RS485-MVB gateway is connected with communication equipment having the RS485 bus through the RS485 bus and is switched in an MVB network through a standard MVB interface by communication protocol conversion.

Description

Technical field: [0001] The invention relates to an application technology based on a VXWORKS operating system in trains, in particular to a VXWORKS-based RS485-MVB gateway. Background technique: [0002] At present, the train control systems provided by major locomotive suppliers in the world for users all adopt the TCN network conforming to the IEC61375 standard, such as SIBAS32 of Siemens and MITRAC of BOMBARDIER. The DTECS network control system independently developed by Zhuzhou CSR Times Electric Co., Ltd. also uses the TCN network. The TCN adopts a two-level topology structure, the train bus adopts WTB, and the vehicle bus adopts MVB. The TCN network is more and more accepted by manufacturers and users all over the world, but there are still some other fieldbus technologies that are also applied in some rolling stock, such as CAN bus and RS485 bus, etc., so there are many different fieldbuses The problem of communication interconnection causes data communication con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/66
Inventor 毛强
Owner 毛强
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