新型的自参照型POF耦合传感器  

Novel Self-Referencing POF coupling Sensor

作　　者：付华[1] 王新鑫[1] 徐耀松[1] 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛125105

出　　处：《仪表技术与传感器》2014年第8期4-6,13,共4页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(51274118);辽宁省科技攻关项目(2011229011);辽宁省教育厅基金项目(L2012119)

摘　　要：基于POF(聚合物光纤)的工作原理,对影响全反射条件的各要素进行了认真分析,提出了一种全新的自参照型POF耦合传感器。通过对初始POF进行部分抛光和加入弯曲等处理,并引入耦合传感的理念,使传感器拥有了自参照特性。利用其耦合比K即可判断传感器所处的外部环境,它可以识别所在液体种类并可区分气液体间的变化。K并不受它所在链路或网络的传输功率波动或者不良功率的干扰,免去了较复杂的光源补偿过程。利用工业中常见的液体(水和油)对该传感器进行了测试和分析,其自参照特性、独立性以及温度特性都得到了研究,证实了耦合传感的优势。Based on the working principle of POF （ polymer optical fiber）, this paper analyzed the influence factors of total in- ternal reflection, and a novel self-referencing POF coupling sensor was presented. The initial POF was partially polished and given different bends, while introducing the idea of coupling sensing, so that the sensor can have a self-referencing characteristic. The coupling ratio （K） depends on the external media in which the sensor is. It is capable to identify the type of liquid and distinguish the changes of gas-liquid. K has no dependence of transmission power fluctuations or undesirable power losses at the link or in the sensor network, so the complex lighting compensation can be avoided. Making use of the most usual liquids （ water and oil） found in industry, the sensor were tested and analyzed. The self-referencing characteristic, the independence and the temperature de- pendence of the sensor device have all been studied in this paper, and the superiority of coupling sensing was confirmed.

关 键 词：聚合物光纤 耦合传感器 自参照 功率损耗 液位信号器 耦合比 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]