弧焊电源智能评价与诊断系统测试平台的建立

研制智能化的测试系统实现弧焊电源性能测试与评价的自动化和智能化，对弧焊电源的研究开发、生产和使用有重要意义，研制了一种用于弧焊电源智能评价与诊断系统的测试平台，该测试平台的前向通道以霍尔元件作为传感器实现数据的采集及分析处理，保证数据采集实时精确；设计了低通有源滤波器以实现对干扰信号的滤除和对有用信号的放大，信号经A／D转换后输入微机，进行数据处理分析，后向通道采用光隔离技术实现微机对负载电阻箱的开关控制。本测试平台适用面广，适于各种交直流焊机，是对弧焊电源进行智能评价与诊断的硬件基础。

The establishment of testing platform for intelligently evaluating and diagnosing arc welding power source

It is of importance to develop a test platform for research,production and application of arc welding power source,which can make the testing of arc welding power automatic and intelligent.In this article,a testing platform for intelligentally evaluating and diagnosing arc welding power is introduced.The data is collected and analyzed by forward channel of the test platform.There are sensors based Hall-effect to precisely sample data in real time.Low frequency active filter is desiged to filter distract signals and amplify useful signals.The useful singnals are dealed by computer after they are converted by A/D converter.The backward channel using photoelectricity technology can control the load resistance by computer.This platform can be used for various arc welding power.It is the base of hardware for evaluating and diagnosing of arc welding power.