基于光透射特性的磁流体传感器研究北大核心

研究了磁流体传感器在无磁场和有磁场情况下光透射特性的变化情况。施加磁场后,透射光功率与入射光功率之间呈非线性关系,且在不同磁场强度下透射光功率随入射光功率增大的过程中均在某一区间突然大幅增大。突然增大的区间具有最高的灵敏度,区间范围与磁流体传感器的薄膜厚度及入射光功率有关。     

Modeling and experimental studies of optical power cable current sensing based on the optical transmission properties of magnetic fluids

Optical power cable(OPC) current sensing models and experiments based on the optical transmission properties of magnetic fluids are proposed. Firstly, the models of OPC, magnetic fluid current sensor and OPC current sensing are established. Secondly, the relationship between the magnetic field and the current of the OPC is demonstrated. Finally, the relationship between the optical transmission properties of magnetic fluids and the OPC current is studied. The results show that there is a good linear relationship between the transmitted power and the current of the OPC.