基于多功能气体检测仪的温度补偿及数据融合  

Temperature Compensation and Data Fusion Based on Multifunction Gas Detector

作　　者：吕运朋[1] 禹金标 薛妤 赫树开 

机构地区：[1]郑州大学物理工程学院,河南郑州450001 [2]河南省日立信股份有限公司,河南郑州450001

出　　处：《仪表技术与传感器》2013年第11期31-34,共4页Instrument Technique and Sensor

摘　　要：设计了基于超低功耗MSP430单片机的多功能手持式气体检测仪,该仪表可完成对O2、CO、CH4、H2S 4种气体浓度的检测.通过软件对气体传感器进行了温度补偿,实验测试了气体传感器之间的交叉感染情况,采用曲面拟合算法有效地减小了交叉灵敏度的影响,使测量精度提高了1～2个数量级.经实验验证,该仪表工作稳定,满足检测精度要求.This paper designed a multifunctional hand-held gas detector based on an ultra-low-power MCU MSP430 . This in- strument can complete the detection of four gases concentration, including 02, CO, CH4, H2S. This design completed temperature compensation through the software programming for the gas sensors. The experiment tested the cross-influence between the gas sen- sors. Using algorithm of surface fitting this paper effectively reduced the influence of cross sensitivity, enhancing the measuring pre- cision to 1 - 2 orders of magnitude. After the experimental certification, this instrument works stably and achieves accuracy requirement.

关 键 词：气体传感器 温度补偿 交叉灵敏度 曲面拟合算法 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]