双弹簧管光纤差压传感器

Fiber Optic Differential Pressure Sensor with Twin Borden Tubes

设计了一种利用对称反转连接的双弹簧管作为差动压力传感元件 ,进行差动压力测量的光纤传感器 这种光纤传感器是在通用光纤传感设计实验系统的基础上 ,利用三光纤反射调制技术 ,实现光源强度的变化和光纤中光功率损耗的变化以及反射率的变化自动补偿的 理论上 ,分析了这种反转对称差压传感弹性元件在使用过程的优点 ,给出了三光纤补偿理论分析方法 实验上 。

A fiber optic differential pressure sensor based on a pair of Borden tubes pressure transformer has been proposed and demonstrated. The twin Borden tubes have been welled in the anti-symmetry manner and working in the way of differential pressure. The fiber optic sensing designing experiments system was used in the sensor design. The intensity type reflective modulation technique is utilized and the variations caused by the fluctuation of light source and the reflectivity change of reflective surface is automatically compensated as a three-fiber reflective modulation technique was utilized in the sensor design. Theoretically, the fiber optic sensor input and output characteristics and the advantages of the anti-symmetry Borden tubes elastic device are analyzed. Experimentally, the linear input-output results are also given and discussed.