Principle and simulation of a novel multi parameter in-situ submarine methane sensor

Qingsong Liu; Youquan Dan; Luopeng Xu; Fubin Yang; Nan Deng; Kaige Li; Wenjing Du

doi:10.1117/12.2622395

27 March 2022 Principle and simulation of a novel multi parameter in-situ submarine methane sensor

Qingsong Liu, Youquan Dan, Luopeng Xu, Fubin Yang, Nan Deng, Kaige Li, Wenjing Du

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 121691S (2022) https://doi.org/10.1117/12.2622395
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

Monitoring the formation process and occurrence state of methane in abyssal gas-liquid-hydrate coexistent system is the premise for gas hydrate research and exploitation, and the key lies in real time, synchronous and in-situ acquisition of multi state parameters, like concentration, temperature, pressure of methane. In this paper, we propose a novel multi parameter in situ methane sensor (Submarine Methane Imaging Interference Spectrometer, SMIIS) that can simultaneously measure concentration, temperature and pressure information of submarine methane. Then to evaluate SMIIS’s feasibility and performance, we build SMIIS’s simulation model and analyze its forward interferogram. The signal-to-noise ratios (SNRs) of the simulation interference fringes for the six spectral lines of methane are in the range of (3 - 618). The detection sensitivities for concentration, temperature and pressure measurements can reach to 0.5 nmol/L, 0.5 K, and 0.05 MPa, respectively. The results indicate that the preliminary design of SMIIS is feasible. After further testing and improvement, this system will have the potential to be applied to the seabed methane detection.

Citation Download Citation

Qingsong Liu, Youquan Dan, Luopeng Xu, Fubin Yang, Nan Deng, Kaige Li, and Wenjing Du "Principle and simulation of a novel multi parameter in-situ submarine methane sensor", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 121691S (27 March 2022); https://doi.org/10.1117/12.2622395

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