Multi-Gas Detection System Based on Non-Dispersive Infrared (NDIR) Spectral Technology.

ABSTRACT: Automobile exhaust gases, such as carbon dioxide (CO₂), carbon monoxide (CO), and propane (C₃H₈), cause the greenhouse effect, photochemical smog, and haze, threatening the urban atmosphere and human health. In this study, a non-dispersive infrared (NDIR) multi-gas detection system consisting of a single broadband light source, gas cell, and four-channel pyroelectric detector was developed. The system can be used to economically detect gas concentration in the range of 0-5000 ppm for C₃H₈, 0-14% for CO, and 0-20% for CO₂. According to the experimental data, the concentration inversion model was established using the least squares between the voltage ratio and the concentration. Additionally, the interference coefficient betw

SUBMITTER: Xu M 

PROVIDER: S-EPMC8838934 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature