论文总字数：22480字

摘 要

随着社会的不断进步，计算机、人工智能、机器人等先进技术的飞速发展促使生产技术的进步与变革。在焊接技术领域，随着焊接技术、焊接设备和焊接工艺的深入研究和发展，焊接过程的自动化和生产过程的自动化越来越受到人们的关注。近年来，弧焊电源的快速发展主要体现在设备的体积和重量的减小，同时输出电感也减小了，这使得弧焊电源能够更加简单方便的实现精确控制。但是目前很多弧焊电源的控制方式都是采用模拟电路作为控制系统进行控制，导致焊接时的控制精度不高，难以通过精确控制实现焊接过程的自动化。所以本文研究了一种基于人机界面的新型弧焊电源控制系统，能够通过数字化控制达到焊接过程的精确控制从而实现焊接过程的自动化。

首先，本课题既然是基于人机界面的控制系统，那么人机界面的设计肯定是本文研究的主要内容之一。所以设计了一种新型的人机界面，通过计算机在嵌入式软件的组态环境中设计焊接参数，焊接方法、焊接材料、焊丝直径、焊接模式等界面，然后将界面中所设计的每一个控件建立变量，将变量附加到设备通道，实现界面与设备之间的通信。

然后，本文基于目前多种弧焊电源控制系统的研究，选择将嵌入式系统与单片机相结合作为控制系统。将单片机的电路进行模块化设计，详细介绍了重要模块的电路设计并给出了电路原理图，同时也对单片机串口程序进行编程，实现单片机与人机界面的通信。

最后搭建了实验平台，将人机界面和单片机进行通信，通过人机界面控制单片机，以指示灯的形式表现出来，通过人机界面上不同的按键驱动不同的指示灯亮起，实现了人机界面控制单片机，将理论与实际相结合，证明了本课题所设计的控制系统的可行性和可操作性。

关键词：人机界面 弧焊电源控制系统 单片机 串口通信

New Control system of Arc Welding Power Source based on HMI

Abstract

With the continuous progress of society, the rapid development of computer vision, artificial intelligence, robot and other advanced technologies promote the progress and transformation of manufacturing technology. In the field of welding technology, with the deep research and development of welding technology, welding equipment and welding process, people pay more and more attention to the automation of welding process and production process. In recent years, the rapid development of arc welding power source is mainly reflected in the reduction of the size and weight of the equipment and the reduction of output inductance, which makes the arc welding power source more simple and convenient to achieve accurate control. However, at present, many arc welding power sources are controlled by analog circuits. The control precision of welding process is not high, so it is difficult to realize the automation of welding process by precise control. Therefore, a new type of arc welding power source control system based on man-machine interface is studied in this paper, which can achieve the precise control of welding process through digital control and realize the automation of welding process.

Firstly, since this subject is a control system based on man-machine interface, the design of man-machine interface must be one of the main contents of this paper. So a new kind of man-machine interface is designed. The interface of welding parameters, welding method, welding material, wire diameter, welding mode and so on is designed by computer in the configuration environment of embedded software. Then every control designed in the interface is set up the variables are attached to the device channel to realize the communication between the interface and the device.

Then, based on the research of many kinds of arc welding power source control system, this paper chooses the embedded system and single chip microcomputer as the control system. This paper introduces the circuit design of the important module in detail and gives the circuit schematic diagram. At the same time, the serial port program of the single chip microcomputer is programmed to realize the communication between the single chip microcomputer and the man-machine interface.

Finally, the experiment platform is built, which communicates the man-machine interface with the single-chip computer, controls the single-chip computer through the man-machine interface, displays in the form of indicator lamp, and drives different indicator lights to light through different keys on the man-machine interface. The man-machine interface control single-chip microcomputer is realized. The theory and practice are combined to prove the feasibility and maneuverability of the control system designed in this paper.

Key words: Human-machine interface arc welding power source control system single-chip serial communication

目 录

摘 要…………………………………………………………………………………I

ABSTRACT …………………………………………………………………II

第一章 绪论 …………………………………………………………………1

1.1弧焊电源控制系统研究的目的和意义…………………………………1

1.2弧焊电源控制系统的国内研究现状 …………………………………2

1.3弧焊电源控制系统的国外研究现状 ……………………………………3

1.4本课题研究的主要内容 ………………………………………………4

第二章 弧焊电源控制系统的设计 ……………………………………5

2.1控制系统的总体设计 ……………………………………………………5

2.2主要控制芯片的选择 ……………………………………………………6

2.3本章小结 ………………………………………………………………7

第三章 弧焊电源控制系统的人机界面设计 …………………………8

3.1人机界面的方案设计 ……………………………………………………8

3.2控制监控界面的设计………………………………………………………9

3.3变量与组态的设计 ……………………………………………………13

3.4通信部分的设计 ………………………………………………………16

3.5本章小结 ……………………………………………………………18

第四章 弧焊电源控制系统的电路设计 ………………………………19

4.1模块化电路单元设计 …………………………………………………19

4.2单片机MCU单元设计 …………………………………………………19

4.3单片机串口通信单元设计 ………………………………………………20

4.4单片机供电模块设计 ……………………………………………………20

4.5单片机MCU软件设计 …………………………………………………21

4.6本章小结…………………………………………………………………24

第五章 弧焊电源整体控制系统测试………………………………………25

5.1 程序的装载测试 ……………………………………………………25

5.2人机界面测试 ……………………………………………………26

5.3人机界面与单片机通信测试………………………………………29

5.4本章小结……………………………………………………………35

第六章 经济性分析…………………………………………………36

结论………………………………………………………………………37

参考文献 …………………………………………………………………………38

第一章 绪论

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