Real-time detection of methane concentration based on TDLAS technology and 1D-WACNN

Abstract:

In order to further reduce the cost of manually screening suitable second harmonic signals for curve fitting when detecting methane concentration by tunable diode laser absorption spectroscopy (TDLAS) technology, as well as the influence of certain human factors on the amplitude screening of second harmonic signals, and improve the de-tection accuracy, a one-dimensional wide atrous convolution (1D-WACNN) method for methane concentration detection is proposed, a real-time detection system based on TDLAS technology to acquire signal and Jetson Nano to process signal is built. The results show that the accuracy of this method is 99.96%. Compared with other methods, this method has high accuracy and is suitable for real-time detection of methane concentration.

Key words:Methane concentration; Tunable diode laser absorption spectroscopy; One-dimensional wide atrous convolution;Jetson Nano