用于煤矿井下电流检测的新型光纤电流传感器设计

Design on new optical fiber current sensor to measure current in deep mine

针对煤矿井下电流检测存在的问题,文章设计出一种新型的光纤电流传感器,采用了具有几何相位补偿的传感头、双光路补偿的检测系统和DSP技术的信息处理系统。实验结果表明精度达到了0.3%,响应时间小于2μs,达到了所需的高精度、实时性和稳定性要求。

According to the existing problems of the current measuring in the deep mine, a new type optical fiber current sensor was designed with the geometric phase compensated sensor head, the double optical circuit compensated measurement system and DSP technology information processing system. The experiment results showed that the accuracy could be reached to 0. 3 % and the response time could be less than 2 μs. The new type sensor had reached the requirements of the high accuracy, actual time and stability.