皮带机、水泵、提升机、压风机、电机等机电设备是煤矿上非常重要的自动化设备,它们的运行状况直接影响煤矿的正常生产及运营.传统的监测手段主要依靠人工定时巡检,个别的在线监测也不全面,效率较低.光纤传感技术具有不带电、容量大和本质安全特点,在煤矿安全监测应用优势明显.本文主要研究光纤加速度传感技术机电设备监测中的应用方法.为了解故障现象和分析故障原因提供可靠的数据.
介绍了光纤传感原理、光纤传感系统的组成,并对光纤钻孔应力传感器在煤体应力监测中的安装方式进行了描述,通过对监测数据分析,表明光纤传感技术能真实反映出监测对象的物理变化过程,在煤矿井下具有广阔的应用前景.
The development of wavelength filtering devices and beam shapers in glass and polymer optical fibers, using inscription with a femtosecond laser, is reported.By using a femtosecond laser operating in
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随着常规石油资源越来越少,国内外各大石油公司都加大了稠油热力开采的投入.国内的稠油油藏开发方式也正逐渐由蒸汽吞吐转向双水平井蒸汽辅助重力泄油.上述开采工艺的效果严重依赖于对井和油藏的动态监测能力,而能够满足上述动态监测需求的最佳手段就是光纤生产监测及解释.光纤监测及解释技术能够综合多种光纤传感器的测量结果,长期实时监测稠油热采井下温度、压力及其变化情况,来分析和解释不同油层部位的动用情况,为稠油热
We report our recent studies on evanescent-field-based photonic microcells (PMCs) made by post-processing commercial micro-structured optical fibers, and by encapsulating tapered micro/nano-fibers wit
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We measure the phase noise and linewidth of 6 asymmetrical Distributed FeedBack Fiber Lasers (DFB FL) using unbalanced Michelson interferometer and delayed self-homodyne method respectively.Test resul
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