Research on Coal mine Gas Detection with WMS Technique
The tunable diode laser absorption spectroscopy (TDLAS) technique, used to detect coal-mine gas, has many prominent virtues: high sensibility, sharp selectivity, quick response and so on. A method of detecting secondary harmonic of methane in coal-mine of the concentration from 0.04％ to 10％, by wavelength modulation spectroscopy (WMS) technique, is proposed. Both theoretic analysis and experimental result prove that the magnitude of secondary harmonic is proportional to the concentration of gas in this concentration range. That provides a totally new method to detect the concentration of coal-mine gas.
coal-mine gas TDLAS WMS secondary harmonic detection
Zhou Mengran Li Zhenbi
Department of Electric Anhui university of science and technology, Anhui, China 232001
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
933-937
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）