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MVB/USB adapter based on SOPC technology and communication method thereof

An adapter and technology technology, applied in the field of network communication, can solve the problems of slow speed, short distance, complicated PCI interface card programming, etc., to achieve the effect of convenient connection and fast transmission speed

Inactive Publication Date: 2009-04-29
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims at the existing MVB bus and the connection mode of computer adopting the RS232 serial port mode with slow speed and short distance, and adopting the defects of complex programming and inconvenient use of PCI interface card, fully researching MVB bus communication characteristics, computer interface technology and SOPC Based on the technology, a MVB / USB adapter and its communication method are provided

Method used

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  • MVB/USB adapter based on SOPC technology and communication method thereof
  • MVB/USB adapter based on SOPC technology and communication method thereof
  • MVB/USB adapter based on SOPC technology and communication method thereof

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Embodiment Construction

[0039] 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.

[0040] figure 1 It is a structural block diagram of the MVB / USB adapter based on SOPC technology. figure 1 Among them, the MVB / USB adapter includes FPGA controller, USB controller, MVB physical level conversion module, power conversion circuit, reset circuit, status light display circuit and DB9 interface. The FPGA controller is connected to the MVB physical level conversion module through three signals RXD485, TXD485, and TI, and the MVB physical level conversion module is connected to the DB9 interface through RS485+ and RS485-. Each signal is defined in the following table (Table 1):

[0041] Signal definition significance RXD485 Receiver of MAX485 Connect to the MVB input of the FPGA contr...

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Abstract

The invention discloses an MVB / USB adapter based on the SOPC technology and a communication method thereof, belonging to the technical field of network communication. The technical proposal is as follows: the MVB / USB adapter comprises an FPGA controller, a USB controller, an MVB physical level conversion module, a power conversion circuit, a resetting circuit, a status lamp display circuit and a DB9 interface. The communication method of the MVB / USB adapter comprises the following steps: the MVB / USB adapter is respectively connected to a computer and an MVB bus; the computer sends data packet to the MVB / USB adapter; the MVB / USB adapter receives the data packet; the FPGA controller reads data from an FIFO module; required read-write operation is judged; and finally, data is sent to the computer or the MVB bus according the required read-write operation. The invention leads the connection of the MVB bus and the computer to be more convenient and the transmission speed to be faster.

Description

technical field [0001] The invention belongs to the technical field of network communication, and in particular relates to an MVB / USB adapter based on SOPC technology and a communication method thereof. Background technique [0002] The modern development trend of train vehicles and the high reliability, safety and real-time requirements of train vehicles make TCN (Train Communication Network, train communication network) gradually become the communication bus standard of next-generation vehicles. TCN is composed of MVB (Multifunctional Vehicle Bus, multifunctional vehicle bus) and WTB (Twisted Train Bus, twisted train bus) two-level bus. MVB is a basic component of TCN, which is used to realize data communication between standard equipment located in the same vehicle or in different vehicles with fixed reconnection. [0003] In the process of R&D and practical application of MVB bus, it is often necessary to connect the PC to the MVB bus, and the PC can exchange data with ...

Claims

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Application Information

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IPC IPC(8): G06F13/40G06F13/42H04L12/40
Inventor 王立德王永翔
Owner BEIJING JIAOTONG UNIV
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