Identification and Correction of Cross-interference of Mixed Gases in Tunnels

Abstract

In gas detection, multiple coexisting gases cause cross-interference, seriously affecting detection accuracy. This paper focuses on gas cross-interference in electrochemical sensors, explaining the definition and mechanism of cross-interference. Two interference experiment sets are designed for typical engineering scenarios (CO and H₂, H₂S and SO₂) to analyze the impact of interfering gases on target gas detection. Combined with linear response characteristics, compensation algorithms are proposed to correct for cross-interference.