摘要
利用在感应线圈内加入带气隙的铁磁材料,将大电流线性地转换成感应电压。利用铌酸锂晶体(LN)在电场作用下的线性电光效应,测出感应电压的大小.实验研究表明:调整铁磁材料气隙的间隔和LN晶体的半波电压,可满足不同测量范围的要求,并具有较好的线性.
A new type of fiber-optic high intensity current sensor is presented in this paper. The current intensity is changed into induction voltage by the induction coil in which the ferromagnetic substance with a gap is inserted. The induction voltage is detected based on the linear clectro-optic effect of LiNbO_3 Experimentallay, it is shown that the sensor can meet the requirements of different measuring ranges by changing the gap spacing and the half-wave voltage of LiNbO_3 crystal. The sensor system has rather good linearity.
出处
《北方交通大学学报》
CSCD
北大核心
1993年第2期183-186,共4页
Journal of Northern Jiaotong University
关键词
电流传感器
铁磁材料
光学纤维
optical fiber
electro-optic effect
current senser/ferromagnetic subrtance
