圆柱形空间约束对LIBS检测煤粉颗粒流的优化研究
Optimization of Coal Particle Flow Detection by LIBS With Cylindrical Spatial Confinement
陈泓杰 1董美蓉 1蔡俊斌 1陆盛资2
作者信息
- 1. 华南理工大学 电力学院,广东 广州 510640;广东省能源高效低污染转化工程技术研究中心,广东 广州 510640
- 2. 广东省特种设备检测研究院,广东 佛山 528251
- 折叠
摘要
为了提高激光诱导击穿光谱技术(LIBS)检测煤粉颗粒流时光谱信号的质量和检测结果的可靠性,根据颗粒流的检测特点,设计了一种圆柱形空间约束,并分析了其对 LIBS 直接检测煤粉颗粒流的实验系统的优化效果.先后对比分析了添加约束前后煤中一些重要元素的特征谱线的绝对强度、信噪比(SNR)和脉冲到脉冲间的相对标准偏差(RSD)等重要信息.结果表明:圆柱形空间约束能够有效地提升LIBS检测煤粉颗粒流的光谱强度和信号的稳定光谱信号的重复性,达到提高检测结果的可靠性的目的.
Abstract
In order to improve the quality of spectral signals and the reliability of detection results,a cylindrical spatial confinement was designed according to the characteristics of particle flow detection.And its effectiveness was analyzed when applied to the direct detection of coal particle flow by LIBS.The absolute intensity,signal to noise ratios(SNRs)and pulse-to-pulse relative standard deviations(RSDs)of characteristic spectral lines of some important elements in coal before and after the addition of confinement were compared and analyzed.The results showed that the cylindrical space constraint could effectively improve the spectral intensity and signal repeatability of LIBS detection of coal particle flow,so as to improve the reliability of detection.
关键词
LIBS/煤粉颗粒流/圆柱形空间约束/光谱Key words
LIBS/Coal particle flow/Cylindrical spatial confinement/Spectrum引用本文复制引用
基金项目
国家自然科学基金(51476061)
广东省特种设备检测研究院科技项目(2021CY-2-02)
出版年
2024
NETL
NSTL
万方数据