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Special wired train bus control device

A technology of train bus and control device, which is applied in the direction of bus network, data exchange through path configuration, digital transmission system, etc., and can solve the problems of poor versatility and non-compliance

Active Publication Date: 2010-10-13
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Although someone has developed an FPGA-based WTB physical layer controller IP core, the IP core can only implement physical functions such as physical layer signal encoding and decoding, signal monitoring, line selection, and redundancy management, which is far from meeting international standards. Mature standards, such as the IEC-61375 standard
In order to realize WTB communication, HDLC protocol needs to be implemented with the help of external devices, which has poor versatility

Method used

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] First introduce the WTB frame. The IEC61375 standard stipulates that a frame signal begins with a frame header, followed by frame data, and finally ends with a termination delimiter. The frame header starts with a start bit S whose level is "1", followed by several ("0", "1") pairs, usually 7 pairs, and finally ends with "1". The start an...

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Abstract

The invention provides a special wired train bus control device, which is characterized in that: a link layer interface comprises a transmitting buffer and a receiving buffer; a link layer comprises an HDLC frame transmitter unit and an HDLC frame receiver unit; and a physical layer comprises a control module, a channel management module, a Manchester coding and decoding module, a timer, an interrupter and a register. The special wired train bus control device provided by the invention has high generality.

Description

technical field [0001] The invention belongs to the field of train communication network control, in particular to a special twisted wire type train bus control device. Background technique [0002] At present, the cost of special chips for train communication network bus (WTB) control used in train communication network control technology is high and expensive. WTB is a serial data communication bus, mainly used for reconnecting vehicles that are frequently connected and disconnected. WTB meets the requirements of the IEC-61375 standard, supports periodic process data, aperiodic message data and monitoring data, and can realize automatic addressing and automatic marshalling of trains through initial operation. WTB can interconnect up to 32 nodes, the transmission medium is shielded twisted pair, the maximum length of trunk cable is 860m, ​​and the working rate is 1Mb / s. WTB adopts hardware redundancy, data is sent on two media at the same time, and the arbitration logic m...

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Application Information

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IPC IPC(8): H04L12/40H04L12/56H04L1/00
Inventor 曹洋蒋国涛曾嵘杨卫峰肖家博吴正平周学勋
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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