摘要
探讨了使用反对数放大器，并与查表法相结合的半导体式气体传感器信号的非线性修正方法，实验表明：这种方法能够满足高体积分数甲烷检测的需要。基于这种方法非线性修正的仪器，甲烷检测体积分数范围为0％-1．0％，检测精度可以达到±5．0％。
A nonlinear correction method of semiconductor gas sensors using exponential amplifier accompany with table look up method is discussed. The test result shows that it is suitable for high volume fraction of methane detection. The nonlinear correction intrument based on this methode, the precision of instruments equipped with this nonlinear correction circuit reaches ＋5.0 % at the range of 0 %- 1.0 % volume fraction.
出处
《传感器与微系统》
CSCD
北大核心
2008年第5期35-36,42,共3页
Transducer and Microsystem Technologies
关键词
甲烷传感器
驱动电路
非线性补偿
对数放大器
反对数放大器
methane sensor
driving circuit
nonlinear correction
logarithmic amplifier
antilog amplifier
