摘要本文针对焊接生产过程中最重要的两个工艺参数电流和电压设计了一套对它们进行实时采集监测的软件和硬件系统。软件系统是建立在图像程序语言LabVIEW的基础上，包含数据采集，实时查看，历史数据查询，报表生成，数据波形重绘等主要功能。硬件系统则主要拥有电压电流信号调理电路，电压电流霍尔传感器，数据采集卡，主机及显示器等。在生产过程中，研究人员可以通过本文设计的硬件与软件结合的系统对采集到的电压电流数据进行在线监测，且这些数据将会同步显示在虚拟仪器上，同时，它们能够准确地保存在数据库中，方便工作人员进行后续的数据分析。在具体的实验过程中，针对TIG焊接高频引弧的特点，设计了一套隔离电路，用于保护电压采集过程。然后分别进行了不同工艺下对TIG和MIG焊接过程的电流电压参数的测试与采集，测试了本套软件和硬件系统是否稳定和准确。87860

毕业论文关键词  TIG MIG 实时采集 LabVIEW 数据库 焊接工艺参数

毕业设计说明书外文摘要

Title    Welding process and database function design of    light alloy welding robot                       

Abstract In this paper, we design a software and hardware system for real-time collection and monitoring of the current and voltage of two process parameters, which are the most important parameters in welding process。 Software system is built on the basis of the image program language LabVIEW, including data acquisition, real-time view, historical data query module, report generation, data waveform repainting and other main functions。 The hardware system mainly has the voltage and current signal conditioning circuit, the voltage current Hall element, the data acquisition card, the host and the monitor and so on。 In the production process, the researchers can monitor the-collected voltage and current data online, at the same time the data is going to be synchronous display in virtual instrument。 At the same time, they can accurately be stored in the database, which is convenient to staff for subsequent data analysis。 In the course of experiment, a set of isolating circuit is designed to protect the high frequency arc ignition of TIG welding process。 Then, the current and voltage parameters of TIG and MIG welding process were tested and collected respectively, and the software and hardware system were stable and accurate。源-于,优Y尔-论,文.网wwW.yOueRw.com 原文+QQ752018,766

Keywords  real-time collection and monitoring  welding process parameters  LabVIEW  database

目   次

1  绪论 1

1。1  选题背景 1

1。2  国内外研究现状 2

1。2。1  轻合金及轻合金焊接技术 2

1。2。2  机器人焊接技术 2

1。2。3  焊接参数传感采集存储 2

1。2。4  虚拟仪器技术 4

1。3  本文主要研究内容 5

2  焊接采集硬件模块的设计 7

2。1  关于TIG焊接高频引弧的特点 7

2。2  信号调理电路 7

2。3  选用TVS 瞬变二极管 7

2。4  关于ISO124隔离放大器的介绍 8