本文讨论的光纤压力传感器能够做到全光无电，可用于油罐液位的检测。
目前，油罐液位元元检测的方式较多，但都存在测量范围小、精度低或价格昂贵等缺点，远不能满足现在对油罐液位测量提出的快速、准确、实时、造价低等要求。这个基于光纤微弯效应的光纤压力传感器，结构小、动态范围大、精度高，可满足液位的测量要求，可以方便地实现在线实时监测，并且可以实现远程控制;而且将光纤用于油罐液位的测量，可以保证现场全光无电，消除了燃烧、爆炸的安全隐患。
Abstract: The present paper in introduced the optical fiber structure and in the fiber optic transmission principle foundation, has analyzed the optical fiber sensing modulation principle and the good and bad points; Has with emphasis analyzed the optical fiber sensor survey fluid position method as well as its superior, the shortcoming, thought presses the sensitive optical fiber fluid position sensor is one kind quite ideal uses in the fluid position examination the method, it is the intensity of pressure different principle which is highly different according to the liquid produces examines the fluid position, is suitable specially for the oil pot fluid position survey. Therefore selects presses the sensitive optical fiber fluid position sensor to take the sensing component, realizes to the fluid position survey, and gave has surveyed the system hardware electric circuit and the software flow.Because the optical fiber has thermostablly, anti-corrosive, safe reliable and so on the merits, therefore the pressure optical fiber fluid position sensor might with the liquid contact, this enable it to have the more widespread application prospect.
Key Words：Light-intensity modulation ,pressure-sensitive fiber-optic sensors,photoelectric conversion,Liquid Level Measurement
目录
摘要（本论文范文的论文综述） 3
Abstract. 3
文献综述 5
1 引言 9
1.1 光纤传感器的基本原理 10
1.1.1光纤的结构 10
1.1.2光纤传感器系统的组成 10
1.1.3光纤传感器基本原理 10
2 光纤液位传感器的类型与选择 11
2.1光纤液位测量的方法 11
2.1.1液面敏感型光纤液位传感器 11
2.1.2液内敏感型光纤液位传感器 13
3 光纤压力式液位传感器电路系统设计 16
3.1光纤压力式液位传感器的结构与工作原理 16
3.2系统的结构框图 17
3.3电路系统设计 17
3.3.1电路选择原则 17
3.3.2光源 18
3.3.3光电检测器 18
3.3.4光电检测电路 20
3.3.5发射电路 23
3.3.6滤波电路 24
3.3.7系统整体电路图 24
4 数据处理软件流程图 25
5 结论 26
参考文献 27
致谢 28
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