| 气体传感器的动态高精度测试系统设计 |
| |
| 引用本文： | 崔远慧,唐祯安,余隽,张双岩.气体传感器的动态高精度测试系统设计[J].仪器仪表学报,2010,31(10). |
| |
| 作者姓名： | 崔远慧 唐祯安 余隽 张双岩 |
| |
| 作者单位： | 1. 大连理工大学电子与信息技术学院,大连,116024;大连工业大学信息科学与工程学院,大连,116034
2. 大连理工大学电子与信息技术学院,大连,116024 |
| |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| |
| 摘 要： | 目前气体传感动态配气方法已经广泛应用,但具体的配制精度还没有系统研究。设计并组建了以四级杆质谱仪、质量流量控制器和计算机程控系统为主的气体传感器测试系统,该系统根据质谱仪的测试数据利用线性最小二乘法实时调整质量流量控制器的输出电压,采用LabVIEW8.5编写上位机数据采集软件进行远程闭环控制。对目前工业领域使用量最大的12种危化品气体进行了气体配制,并对配制的部分气体利用Agilent6890气相色谱仪进行了测试分析,给出了该测试系统在常温常压下配制不同浓度混合气体的精度。实验数据表明:该系统配制的气体可以作为工业气体传感器的标定气体使用。
|
| 关 键 词： | 气体传感器 动态测试系统 线性最小二乘法 闭环控制 |
Design of a dynamic high-precision characterizing system for gas sensors |
| |
| Cui Yuanhui,Tang Zhen'an,Yu Jun,Zhang Shuangyan.Design of a dynamic high-precision characterizing system for gas sensors[J].Chinese Journal of Scientific Instrument,2010,31(10). |
| |
| Authors: | Cui Yuanhui Tang Zhen'an Yu Jun Zhang Shuangyan |
| |
| Affiliation: | Cui Yuanhui1,2,Tang Zhen'an1,Yu Jun1,Zhang Shuangyan1(1 School of Electronic Engineering,Dalian University of Technology,Dalian 116024,China,2 School of Information Engineering,Dalian Polytechnic University,Dalian 116034,China) |
| |
| Abstract: | As for the accuracy of dynamic testing system for gas sensors, few systematic researches have been carried on so far. A dynamic high-precision testing system for calibrating gas sensors is reported in this paper. The system is mainly composed of a quad-rupole mass spectrometer, four mass flow controllers and a program controller. This system can produce high accuracy standard gas. Least squares linear fitting is adopted to deal with the spectrometer data and control the data collector in real time. A progra... |
| |
| Keywords: | gas sensor dynamic test system linear least squares method close-loop control |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
