河北工程大学毕业设计（论文）I摘要摘要荧光光纤测温技术是利用物质的荧光亮度随温度变化的特性来测量。可以实现在电磁干扰下的温度测量。并且荧光光纤温度传感器不仅限于表面温度的定向测量,其探头还可以插入固体物质中、浸入液体中或导入设备中,到达特定区域。荧光测温具有很多优点,如实现温度的绝对测量,测温精度不受被测体表面发射率的影响,在中低温范围内有很高的灵敏度和测温精度等等。 本课题设计以寻求新的荧光温度敏感材料，满足不同的应用条件，提高系统的可靠性和灵敏度,设计高荧光收集效率的探头形式为目标。.以发光二极管作为激发光源，在系统的组态、控制方式、寿命上比传统的方法具有诸多优点。采用锁相法检测相位的方法来检测荧光寿命。通过荧光寿命计算出相应的温度,实现对温度的绝对测量。 它的设计为温度测量技术在价格及实用性方面做出了新的突破。关键词：关键词：光纤传感器；温度测量；荧光寿命；锁相环河北工程大学毕业设计（论文）IIAbstractFluorescent fiber-optic temperature measurement technology is the use of substances with the brightness of the fluorescence characteristics of temperature measurement. Electromagnetic interference can be achieved in the temperature measurement. Fluorescent fiber-optic temperature sensor is not limited to the targeted surface temperature measurements, the probe can be inserted in solids, liquids, or immersion into the device to reach the specific area. Fluorescence measurement has many advantages, such as the absolute temperature measurement, temperature measurement accuracy from the measured surface emissive impact of low temperature in the range of high sensitivity and temperature measurement accuracy and so on.The design of this issue to seek new fluorescence temperature-sensitive materials, to meet different application requirements, improve system reliability and sensitivity, the design of high-efficiency fluorescent probe to collect the form of goals. . To light-emitting diode as excitation light source, the systems configuration, control, life expectancy than the conventional method has many advantages. The use of phase-locked phase-detection method to detect the fluorescence lifetime. Fluorescence lifetime is calculated through the appropriate temperature, to achieve an absolute measurement of temperature. It is designed for temperature measurement techniques in terms of price and practicality to make a new breakthrough.河北工程大学毕业设计（论文）IIIKeywords: fiber-optic sensors; temperature measurement; fluorescence lifetime; phase-locked loop河北工程大学毕业设计（论文）IV目录摘要.IAbstract.II第 1 章 绪论.11.1 引言.11.2 荧光光纤测温传感器的分类以及研究现状.21.2.1 荧光光纤温度传感器的分类.21.2.2 荧光光纤温度传感器的发展现状.21.3 课题研究的目的和意义.41.4 主要研究内容及方案.5第 2 章 光纤荧光温度传感机理及特性分析.62.1 引言.62.2 荧光测温机理.62.3 荧光材料.72.3.1 固态激光材料.72.3.2 稀土材料.82.4 荧光的激发光源.82.4.1 发光二极管.92.4.2 半导体激光器.92.4.3 氙灯.112.5 光探测器件.112.5.1 PN 和 PIN 光探测器的工作原理 .12河北工程大学毕业设计（论文）V2.5.2 光探测器的特性参数.122.6 光纤传输.142.6.1 光纤的损耗特性.142.6.2 光纤的色散特性.152.7 光路耦合.162.8 本章小结.18第 3 章 荧光寿命测温技术的基本理论.183.1 引言.183.2 荧光寿命.