基于荧光效应的光纤传感技术的研究

发布时间：2018-08-07 10:12

【摘要】：荧光效应是一种应用广泛的物理机制,在很多领域比如生物、医学、光电、显示技术等方面都有重要应用。本文结合荧光效应和光纤原理,提出了两种传感器,分别是荧光光纤温度传感器和荧光光纤电弧光传感器。荧光光纤温度传感器灵敏度很高,抗干扰能力强,可在各种恶劣环境下使用,弥补了很多传统温度传感器的不足。论文首先介绍了荧光寿命型荧光光纤温度传感器,并对使用正弦波调制和方波调制的两种荧光寿命锁相检测方法做了详细分析和Matlab Simulink仿真。经过仿真更深入的展现了荧光寿命锁相检测方法的实现过程。与荧光强度型的光纤温度传感器相比,荧光寿命型光纤温度传感器仅与荧光寿命相关,抗干扰能力强,而且具有更高的精确度。本文利用荧光效应和光纤理论,设计了一种电弧光传感器。针对该传感器还设计了两种荧光探头,第二种荧光探头是对第一种荧光探头的改进。对两种荧光探头进行了多次试验和数据分析,并利用Matlab Simulink软件对所得数据进行了最小二乘拟合。通过对两种探头的拟合曲线对比,结果表明第二种类型的荧光探头在白、黄、紫三色光源下的响应电压都比第一种平均高出40%。最后,通过数据结果确定了传感器的阈值。本文设计的电弧光传感器响应时间在us量级。荧光电弧光传感器具有很高的灵敏度可用于检测电力设备短路故障以及火灾检测等,而且其响应时间极快。这种传感器可以组成分布式网络监控系统,以扩大监控范围。
[Abstract]:Fluorescence effect is a widely used physical mechanism, which has important applications in many fields such as biology, medicine, photoelectricity, display technology and so on. Based on the principle of fluorescence effect and optical fiber, two kinds of sensors are proposed in this paper, namely, fluorescent fiber temperature sensor and fluorescent fiber arc light sensor. Fluorescent fiber temperature sensor has high sensitivity and strong anti-interference ability. It can be used in a variety of harsh environments and makes up for the shortcomings of many traditional temperature sensors. Firstly, the fluorescence lifetime type fluorescent fiber temperature sensor is introduced in this paper, and two kinds of fluorescence lifetime phase-locked detection methods using sine wave modulation and square wave modulation are analyzed in detail and simulated by Matlab Simulink. Through simulation, the realization process of phase locked detection method of fluorescence lifetime is further demonstrated. Compared with the optical fiber temperature sensor with fluorescence intensity, the fluorescent lifetime optical fiber temperature sensor is only related to the fluorescence lifetime, has strong anti-interference ability, and has higher accuracy. Based on the fluorescence effect and optical fiber theory, an arc light sensor is designed in this paper. Two kinds of fluorescence probe are designed for the sensor, the second kind of fluorescence probe is the improvement of the first kind of fluorescence probe. The two kinds of fluorescence probes were tested and analyzed many times, and the data were fitted by least square method with Matlab Simulink software. By comparing the fitting curves of the two kinds of probes, the results show that the response voltage of the second type of fluorescence probe is 40 times higher than that of the first one under the white, yellow and purple light sources. Finally, the threshold value of the sensor is determined by the data results. The response time of the arc light sensor designed in this paper is in the order of us. Fluorescent arc light sensor has high sensitivity and can be used to detect short circuit fault and fire detection of power equipment, and its response time is very fast. The sensor can form a distributed network monitoring system to expand the monitoring range.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP212

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