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Self-adaptive multibus fusion method

A fusion method and multi-bus technology, applied in the computer field, can solve the problems of high cost, complicated development process, inability to realize automatic detection of data transmission baud rate, etc., and achieve the effect of automatic detection and convenient conversion.

Active Publication Date: 2010-12-15
XIDIAN UNIV
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Problems solved by technology

The disadvantage of implementing this method is that an additional OPC server needs to be developed, the development process is complex and costly, and the automatic detection of the data transmission rate cannot be realized
However, this method is only suitable for conversion between two fieldbus protocols, requires a special protocol conversion gateway, and cannot automatically detect the baud rate of data transmission

Method used

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Embodiment Construction

[0024] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] refer to figure 2 , the implementation steps of the present invention are as follows:

[0026] Step 1, automatic detection of data transmission rate.

[0027] 1a) Use the SCIA channel to receive the data transmission baud rate detection character 00000001 sent by the sub-task module, where 0 is low level and 1 is high level;

[0028] 1b) Set the idle bit to high level when the SCIA channel does not receive data, and start at the falling edge between the idle bit and the first low level when the SCIA channel receives the first low level of the detection character Timer Timer0 starts counting;

[0029] 1c) When the SCIA channel receives the first high level of the detection character, stop the timer Timer0 timing at the rising edge between the low level and the first high level, and obtain the timing time as t;

[0030] 1d) Select th...

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Abstract

The invention discloses a self-adaptive multibus fusion method which mainly solves the problem that the traditional multibus fusion requires developing special gateway or OPC (OLE (Object Linking and Embedding) for Process Control) server. The method comprises the following steps of: controlling the on and off of a timer 0 according to the level fluctuation of a detection character 00000001 received by an SCIA (Smart Card Industry Association) channel to obtain count time, and realizing the automatic detection of data transmission baud rate; dividing the data domain of a TCP / IP (Transmission Control Protocol / Internet Protocol) data frame into various bus subdata domains, extracting the data bit of each bus through packet disassembly for different bus data frames, and adding the data bit to the subdata domain of the corresponding TCP / IP data frame to realize the conversion from different bus data frame formats into the TCP / IP data frame format; and extracting the data of each subdata domain through packet disassembly for the TCP / IP data frame, and adding the data to the corresponding bus data frame format through packet assembly to realize the conversion from TCP / IP data frame format into the different bus data frame formats. The invention can realize multibus fusion under the condition of not developing special gateway or OPC server, and can be used for realizing the data transmission of various field buses.

Description

technical field [0001] The invention belongs to the field of computers and relates to a multi-bus fusion method, in particular to an adaptive multi-bus fusion method, which can be used to realize data transmission of various field buses. Background technique [0002] The reality of the coexistence of multiple fieldbus standards, the diversification of industrial application requirements, and the continuity and delay of technological development will inevitably lead to the realization of a control system based on multi-fieldbus fusion as a trend in technological development. [0003] figure 1 The structure of the multi-field bus control system is given, which mainly includes the control module, the multi-bus fusion method module and the sub-task module. The sub-task module is composed of RS-422 sub-task module, 1553B sub-task module, RS485 sub-task module, ARINC429 sub-task module and CAN bus sub-task module. Each sub-task module realizes data communication with the control...

Claims

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Application Information

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IPC IPC(8): H04L12/40H04L12/26H04L29/06
Inventor 相征上官瑞春徐连军刘校伟
Owner XIDIAN UNIV
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