Development of an Automated LIBS Analytical Test System Integrated with Component Control and Spectrum Analysis Capabilities

• Published in: Plasma science & technology Vol. 17; no. 8; pp. 704 - 710
• Main Author: 丁宇 田地 陈飞鹏 陈鹏飞 乔淑君 杨光 李春生
• Format: Journal Article
• Language: English
• Published: 01.08.2015
• Subjects: Automatic control; Compatibility; Control systems; Filtering; Mathematical analysis; Platforms; Spectral lines; Spectrum analysis; 元素鉴定; 分析测试系统; 组件模型; 能力; 自动化控制; 自动化测试系统; 识别方法; 频谱分析
• ISSN: 1009-0630
• DOI: 10.1088/1009-0630/17/8/16

The present paper proposes an automated Laser-Induced Breakdown Spectroscopy （LIBS） analytical test system, which consists of a LIBS measurement and control platform based on a modular design concept, and a LIBS qualitative spectrum analysis software and is developed in C#. The platform provides flexible interfacing and automated control; it is compatible with different manufacturer component models and is constructed in modularized form for easy ex- pandability. During peak identification, a more robust peak identification method with improved stability in peak identification has been achieved by applying additional smoothing on the slope obtained by calculation before peak identification. For the purpose of element identification, an improved main lines analysis method, which detects all elements on the spectral peak to avoid omission of certain elements without strong spectral lines, is applied to element identification in the tested LIBS samples. This method also increases the identification speed. In this paper, actual applications have been carried out. According to tests, the analytical test system is compatible with components of various models made by different manufacturers. It can automatically control components to get experimental data and conduct filtering, peak identification and qualitative analysis, etc. on spectral data.