连动型抗干扰干涉具井下瓦斯浓度监测系统（英文）
发布时间：2018-10-20 13:14
【摘要】：针对井下甲烷浓度监控干扰大的问题,结合实时监测甲烷浓度的系统要求,设计角镜连动的自消震光学结构,构建了基于无线网络的实时数据通信系统.在干涉系统中,固定两个角镜位置,将两片半透半反镜用连杆结构同步旋转,由此产生光程差.由于采用了连杆结构,任意时刻引入的震动在两个分束镜上等量存在,其结果是差分值,可实现完全相消.由分析分束器的最大旋转范围计算得到系统的光程差变化范围.结合比尔朗伯定律,给出系统在井下工作的甲烷气体浓度最低检出限.分别在实验室及矿井主巷道中完成实验过程,通过化学反应法求得被测甲烷气体的标准浓度,与WQF530型光谱分析仪的测试结果作比较,结果表明:在实验室无干扰条件下,两种检测方法的相对误差均小于1.0%;在井下实验中,传统光学检测方法受环境影响明显,相对误差大幅增加,而本系统测试结果基本稳定,具有较强的抗干扰能力及较高的稳定性.
[Abstract]:Aiming at the problem of large interference in underground methane concentration monitoring and combining with the system requirements of real-time monitoring methane concentration, the self-seismic optical structure of angle mirror linkage is designed, and a real-time data communication system based on wireless network is constructed. In the interference system, the position of two angle mirrors is fixed, and the two semi-transparent and semi-reflective mirrors are rotated synchronously with the connecting rod structure, resulting in optical path difference. Because of the connecting rod structure, the vibration introduced at any time exists on two beam splitters, and the result is the difference value, which can be completely eliminated. The optical path difference range of the system is calculated by analyzing the maximum rotation range of the beam splitter. Combined with Bill Lambert's law, the minimum detection limit of methane concentration working in underground is given. The experimental process was completed in laboratory and mine main roadway, and the standard concentration of methane gas was obtained by chemical reaction method. The results were compared with the results of WQF530 spectrometer. The results showed that there was no interference in the laboratory. The relative error of the two detection methods is less than 1.0. In the underground experiment, the traditional optical detection method is obviously affected by the environment, and the relative error is greatly increased, while the test results of this system are basically stable. It has strong anti-interference ability and high stability.
【作者单位】： 长春理工大学光电工程分院;
【基金】：The National Natural Science Foundation of China(No.60405006)
【分类号】：TD712
本文编号：2283289
[Abstract]:Aiming at the problem of large interference in underground methane concentration monitoring and combining with the system requirements of real-time monitoring methane concentration, the self-seismic optical structure of angle mirror linkage is designed, and a real-time data communication system based on wireless network is constructed. In the interference system, the position of two angle mirrors is fixed, and the two semi-transparent and semi-reflective mirrors are rotated synchronously with the connecting rod structure, resulting in optical path difference. Because of the connecting rod structure, the vibration introduced at any time exists on two beam splitters, and the result is the difference value, which can be completely eliminated. The optical path difference range of the system is calculated by analyzing the maximum rotation range of the beam splitter. Combined with Bill Lambert's law, the minimum detection limit of methane concentration working in underground is given. The experimental process was completed in laboratory and mine main roadway, and the standard concentration of methane gas was obtained by chemical reaction method. The results were compared with the results of WQF530 spectrometer. The results showed that there was no interference in the laboratory. The relative error of the two detection methods is less than 1.0. In the underground experiment, the traditional optical detection method is obviously affected by the environment, and the relative error is greatly increased, while the test results of this system are basically stable. It has strong anti-interference ability and high stability.
【作者单位】： 长春理工大学光电工程分院;
【基金】：The National Natural Science Foundation of China(No.60405006)
【分类号】：TD712
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