摘要
建立了以超磁致伸缩棒调谐光纤光栅作为传感头的交流电流传感系统,提出了自发放大辐射宽带光源解调技术,用50Hz交流信号对系统进行实验验证。结果表明该系统能较好地检测出被测信号的幅值、频率和相位,应用高阶方程组拟合具有迥滞线特性的系统传递函数,可实时准确地重建被测电流波形。
An AC current sensing system is established with a sensing probe using of a GMM rod to modulate a FBG. A demodulation method, which is based on an Amplified Spontaneous Emission （ASE） light source, is proposed in this paper, and the experiment verification is carded out with 50Hz AC current. The results show that the amplitude, frequency and phase of the signal to be measured are restored well with the system. Fitting the system transfer function, which has a loop characteristic, with a high order equation group, the signal waveform measured can be restored precisely in real time.
出处
《电工技术学报》
EI
CSCD
北大核心
2006年第4期16-19,45,共5页
Transactions of China Electrotechnical Society
关键词
光纤布拉格光栅
超磁致伸缩材料
光源解调
交流电流传感
Fiber Bragg Grating（FBG）, giant magnetostrictive material（GMM）, light sourcedemodulation, AC sensing
