CAJ | 학술논문

基于制备得到的微型碳纳米管NH3传感器，研制了一种便携式气体浓度检测系统。此系统由恒流源驱动，通过微控制单元实现自动检测。为了便于安装、维修与调试，该系统所有电路均采用模块化设计，检测系统可以比较精确地测量25 kΩ以内电阻的变化，可以精确检测5×10－6～50×10－6范围内NH3气体浓度。
기우제비득도적미형탄납미관NH3전감기，연제료일충편휴식기체농도검측계통。차계통유항류원구동，통과미공제단원실현자동검측。위료편우안장、유수여조시，해계통소유전로균채용모괴화설계，검측계통가이비교정학지측량25 kΩ이내전조적변화，가이정학검측5×10－6～50×10－6범위내NH3기체농도。
Research and fabricate a portable gas concentration detection system based on micro carbon nanotube NH3 sensor,which is driven by constant current source,realize auto detection by micro control unit( MCU). All the peripheral circuits adopt modularized design,which makes it easy to install,maintain and debug. This detection system is capable of measuring the resistance change of sensor below 25 kΩ,and can accurately detect the NH3 under concentration at range of 5 ×10-6~50 ×10-6 .