Tail gas monitoring method and device based on synthetic wavelength interference technology

• Main Authors: XIONG CHEN, DENG ZHUOLIN, CAI MING
• Format: Patent
• Language: Chinese; English
• Published: 13.05.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a tail gas monitoring method and device based on a synthetic wavelength interference technology. The method comprises the steps that to-be-recognized information is acquired according to a tail gas detection system and a vehicle recognition system which are installed on the two sides of a road; constructing a mixed gas volume fraction detection method based on a wavelength synthesis technology to perform first processing on the to-be-identified information; performing second processing on the first information according to an interference fringe inclination angle solving method; according to the second information, calculating a fringe period based on Fourier spectrum analysis; according to the third information, space matching and rapid calculation of the interference image are carried out; generating a phase tracking scheme under the condition of dynamic signal change according to the fourth information; according to the fifth information, measuring system parameters are calibrated,