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首页> 外文会议>Photonics in the transportation industry: Auto to aerospace III >Fiber Optic Oxygen sensor using Fluorescence Quenching for Aviation Industry
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Fiber Optic Oxygen sensor using Fluorescence Quenching for Aviation Industry

机译：航空工业中采用荧光淬火的光纤氧气传感器

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Comprised of heavier hydrocarbon components, jet fuel is much less volatile, with Jet A having a flash point of approximately 100℉ and JP-4 having a flash point of approximately 0℉. In contrast, straight-run gasoline has a flash point of approximately -40℉. The flash point is the minimum temperature where a liquid fuel can generate enough vapor to form a flammable mixture with air. If the temperature is below the flash point there isn't enough fuel evaporating to form a flammable fuel-air mixture. Since jet fuel and gasoline have similar flammable concentration limits, gasoline must produce much more vapor at a given temperature to have such a low flash point; hence gasoline is much more volatile than jet fuel. In this paper we explore Fluorescence Technology as applied to the design and development of 02 sensors that can be used for this application and discuss the various test and measurement techniques used to estimate the 02 gas concentration. We compare the various intensity based approaches and contrast them with the frequency domain techniques that measure phase to extract fluorescent lifetimes. The various inerting fuel tank requirements are explained and finally a novel compact measurement system using that uses the frequency heterodyning cross correlation technique that can be used for various applications is described in detail while the benefits are explored together with some test data collected.
机译：喷气燃料由较重的碳氢化合物组成，挥发性极低，喷气飞机A的闪点约为100，而JP-4的闪点约为0。相反，直馏汽油的闪点约为-40 approximately。闪点是液体燃料可以产生足够的蒸气以与空气形成易燃混合物的最低温度。如果温度低于闪点，则没有足够的燃料蒸发而形成易燃的燃料-空气混合物。由于喷气燃料和汽油的可燃浓度极限相似，因此汽油必须在给定温度下产生更多的蒸气才能具有如此低的闪点。因此汽油比喷气燃料的挥发性要大得多。在本文中，我们探索了可用于该应用的02传感器设计和开发中的荧光技术，并讨论了用于估算02气体浓度的各种测试和测量技术。我们比较了各种基于强度的方法，并将它们与测量相位以提取荧光寿命的频域技术进行了对比。解释了各种惰化燃料箱的要求，最后详细描述了一种新颖的紧凑型测量系统，该系统使用了可用于各种应用的频率外差互相关技术，同时探讨了益处以及收集的一些测试数据。

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