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《Journal of Hubei University(Natural Science)》 2018-03
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Designing of carbon dioxide gas detection system based on NDIR

ZHANG Hao;WANG Zhao;LI Yue;CHEN Jianwei;LUO Haosu;Faculty of Physics & Electronic Technology,Hubei University;Shanghai Institute of Ceramics,Chinese Academy of Sciences;  
Introduces a CO_2 detection system based on Non-Dispersive Infra-Red( NDIR) technology. The system includes two parts hardware and software,hardware part contains linear regulator circuit of positive and negative linear regulator circuit,DC/DC conversion circuit,charge amplifier circuit of detector,magnification can be adjusted impedance matching circuit,program download circuit and display module,The system takes the integrated 12 bit ADC microcontroller as the core,cooperating with peripheral circuit to control infrared light source and to receive analog voltage signals from the PMNT infrared pyroelectric detector. The software section is used for signal collection,A/D conversion and processing and display. The system adopted PMNT infrared pyroelectric detector, combined with NDIR technology, and designed a system of CO_2 on-line detection.
【Fund】: 国家自然科学基金(11474088 51372258);; 国家科技部重点研发计划(2016YFC0201102);; 上海市科学技术委员会科研计划(1544190460)资助
【CateGory Index】: TN215
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