基于MSP430F149单片机的大气环境CO_2探测仪的设计与实现  

Design and Development of CO_2 Analyzer of Atmospheric Ambient Based on MSP430F149

作　　者：黄见[1] 胡顺星[1] 冯林[1,2] 孟祥谦[1,2] 张世国[1,2] 邵石生[1] 苑克娥[1] 曹开法[1] 徐之海[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所,中国科学院大气成分与光学重点实验室,安徽合肥230031 [2]中国科学院研究生院,北京100049

出　　处：《仪表技术与传感器》2013年第7期32-34,共3页Instrument Technique and Sensor

基　　金：科技部科技基础性工作专项基金(2007FY110700);国家自然科学基金(41005015);中科院知识创新工程重要方向性项目(KJCX2-EW-N07)

摘　　要：介绍了一种新型的大气环境CO2实时探测系统。该系统依据双波长非分光红外吸收技术,利用MSP430F149单片机作为控制核心,通过单片机自带的12位模/数转换器对经过放大、滤波预处理后的双通道信号进行模数转换,然后通过RS232总线将数据传送到上位机进行显示、处理、存盘。上位机利用LabVIEW8.6软件设计了一套数据采集、存储和分析于一体的虚拟探测平台。连续24 h测量结果表明:该系统能较准确地反映出大气环境中CO2的昼夜变化特征,通过与EC9820型CO2地面分析仪对比分析可知,两者的一致性较好。有很好的应用前景。A new type of real-time detection system of atmospheric ambient CO2 based on dual wavelength of NDIR absorption technology was introduced. This system was designed by MCU of MSP430F149 which embedded a 12 bits A/D converter that can acquire the dual-channel signal of CO2 concentration after process through amplifier and filter circuits. Through the RS-232 inter- face the digit can be delivered to the PC which can display, process and store them with the virtual instrument software of Lab- VIEW8.6. The test results show that the designed system can accurately reflect the trend of atmospheric ambient CO2 in 24 hours measurement. The comparison experiment＇ s results demonstrate that the design is feasible and of great significance with CO2 analy- zer of EC9820 from ECOTECH of Australia.

关 键 词：CO2探测 MSP430F149 LABVIEW 非分光红外 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]