摘要
利用可调谐二极管激光吸收光谱(TDLAS)技术,选择不受干扰的1653.72nm波长处的吸收线监测煤矿瓦斯浓度,并结合了高性能的数字信号处理器(DSP)和二次谐波检测技术,进一步降低了检测限,使检测限低于0.074mg/m3,实现了对瓦斯浓度高稳定性和高灵敏度的实时测量。
By using the tunable diode laser absorption spectroscopy（TDLAS） technology the absorption line of methane at the wavelength of 1 653.72 nm is found to be free of interference and suitable for the measurement of coal mine methane.The high performance microcontroller（DSP） and second harmonic detection are used to lower the detection limit further that is below 0.074 mg/m3.It has an obvious advantage in sensitivity and stability and can achieve real-time measurement of the coal mine methane.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2010年第1期38-41,共4页
Journal of Optoelectronics·Laser
基金
安徽理工大学青年教师科学研究基金资助(校科技[2008]25号)
