Communication protocol conversion device and method based on embedded multiple MCU

A communication protocol conversion and embedded technology, applied in electrical components, network connections, transmission systems, etc., can solve problems such as system real-time performance, poor reliability, and limited processing capacity of single-chip systems, to simplify circuit design, eliminate accumulated errors, The effect of improving reliability

Active Publication Date: 2009-04-29
SHANGHAI UNIVERSITY OF ELECTRIC POWER +1
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Problems solved by technology

[0004] The present invention aims at the limited processing capability of the single-chip microcomputer system in the existing communication technology, and the problems of poor real-time performance and poor reliability of the system, and proposes a communication protocol conversion device and method based on embedded multi-MCU, using embedded multi-MCU And high-speed dual-port RAM data sharing technology, which improves the reliability and real-time performance of the system, and can conveniently realize data exchange, data sharing and information processing between embedded MCUs

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  • Communication protocol conversion device and method based on embedded multiple MCU
  • Communication protocol conversion device and method based on embedded multiple MCU
  • Communication protocol conversion device and method based on embedded multiple MCU

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Embodiment Construction

[0021] Such as figure 1 As shown, the communication protocol conversion device based on embedded multi-MCU includes embedded slave MCU1, dual-port RAM2, LCD liquid crystal display 3, embedded master MCU4, button 5, Ethernet 6, RSB485 communication interface 7 and RS232 communication interface 8. Among them, the embedded slave MCU1 realizes the communication with the data acquisition I / O module and intelligent instrumentation of the equipment layer through the RS232 communication interface 8 or the RS485 communication interface 7 with protocols such as Modbus / RTU or ASCII, and obtains the industrial field measurement data. Put the data from the MCU1 into the dual-port RAM2, the embedded main MCU4 exchanges data with the dual-port RAM2, receives the command of the keyboard 5, and is responsible for managing the system parameter settings, and at the same time outputs the data to the LCD liquid crystal display 3, and through the Ethernet 6 The communication interface uses protocol...

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Abstract

The present invention relates to a communication protocol converter based on embedded type multi-MCU and a method thereof, wherein the communication protocol converter adopts an embedded type multi-MCU and a real-time multiple task operating system Uc/OS-II. The communication protocol converter realizes the communication to the data collecting I/O module of a device layer through protocols of Nodbus/RTU or ASCII, etc. The measuring data of industrial field is obtained, and then the data is transmitted to remote monitoring systems of upper DAS, DCS, etc. through the protocols of Modbus/TCP, TCP/IP, etc. with an Ethernet communication interface. The functions of relaying and protocol converting in industrial communication network are realized. The serial interface device of the device layer can be easily connected to a monitoring layer network. The embedded type multi-MCU and high-speed RAM data sharing technology are adopted for simplifying circuit design, increasing the reliability and real-time property of system, and facilitating the data exchange, data sharing and information processing between the embedded type MCUs.

Description

technical field [0001] The invention relates to a communication protocol conversion technology, in particular to a communication protocol conversion device and method based on an embedded multi-MCU. Background technique [0002] In various industries such as electric power, petroleum, chemical industry, metallurgy, steel, transportation, etc., after on-site signals are continuously collected and processed by the data acquisition system, they need to be transmitted to the upper monitoring system such as DAS and DCS through the data communication network. Since there are many differences in data processing and transmission between field-level equipment and control-level or monitoring-level equipment, the process of transmitting field signals to the upper monitoring system often needs to pass through different data communication networks, and a communication protocol conversion device is essential. [0003] With the rapid development of technologies such as computers, electroni...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/66
Inventor 彭道刚张浩茅大钧郑陆君李辉夏飞许龙虎杨瓅
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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