论文部分内容阅读
针对带变螺距段传感光纤的全光纤电流传感器,提出两种抗干扰结构:基本结构,即将变螺距段与传感光纤一起成束并将反射镜置于变螺距段中点位置;“8”字型结构,将变螺距段绕成“8”字型。分析两种结构的抗干扰原理,实验检验电流导体在传感光纤环内、外不同位置时传感器读数的差异。实验结果表明,两种结构均可抗0.5m以上的1000A级别的外界电流干扰,但前者仅适用于电流导体与传感光纤环相对位置固定不变的应用场合,后者可适用于诸多电流导体与传感光纤环相对位置不固定的应用场合。在不同的应用场合下两种结构的抗干扰性能均具有实用性。
For the all-fiber current sensor with variable pitch pitch sensing fiber, two kinds of anti-jamming structures are proposed: the basic structure, that is, the variable pitch section is bundled with the sensing fiber and the reflector is placed at the midpoint of the variable pitch section; 8 “font structure, the variable pitch section into a” 8 "font. The anti-interference principle of the two structures is analyzed, and the difference between the sensor readings of the current conductor in different positions inside and outside the sensing fiber loop is experimentally verified. The experimental results show that the two structures can resist the external current of 1000A above 0.5m. However, the former is only suitable for the applications where the relative positions of the current conductor and the sensing fiber loop are fixed, and the latter can be applied to many current conductors And sensing fiber optic ring relative position is not fixed applications. In different applications, the anti-interference performance of the two structures are practical.