CAJ | 학술논문

针对传统热催化瓦斯检测技术和光纤传感瓦斯检测技术的不足，提出了一种新的瓦斯气体检测方案。根据双波长双光路DFB LD光谱吸收原理，采用 Siemens PLC控制技术，设计了瓦斯气体传感器和瓦斯气体检测系统。实验结果表明，该系统拓宽了检测范围，具有精度高、稳定性好、寿命长等特点，并能消除光路干扰和光源输出功率不稳定等因素。
침대전통열최화와사검측기술화광섬전감와사검측기술적불족，제출료일충신적와사기체검측방안。근거쌍파장쌍광로DFB LD광보흡수원리，채용 Siemens PLC공제기술，설계료와사기체전감기화와사기체검측계통。실험결과표명，해계통탁관료검측범위，구유정도고、은정성호、수명장등특점，병능소제광로간우화광원수출공솔불은정등인소。
To overcome the defects of gas detection technologies using the traditional thermo—catalytic and optical—fiber sensor,a new detection method is proposed in this paper.Based on double wavelength double light path spectral absorption principle of DFB LD,with the Siemens PLC control technique,the gas sensor system for high sensitivity methane detection is designed.The experimental results show that this system not only can broaden the detection range,but also has the the advantages of high accuracy,good stability and long life.In addition,the optical path interference and light output power instability will be eliminated by this system.