Research on design method of adaptive broadband photoelectric sensor based on magnetoelectric composite material

In the traditional current sensing of magnetostrictive materials, the magnetoelectric (me) response driven by periodic frequency conversion sinusoidal magnetic field is usually studied. However, it is necessary to measure the rapidly changing and aperiodic magnetic field in the practical applications of industry, medical treatment, oil and electricity. Therefore, this paper optimizes the current sensor based on the existing current sensor. The parameter setting of the sensor is modified. The current output of the sensor under periodic frequency conversion sinusoidal voltage and sinusoidal impulse voltage is measured experimentally. The experimental results show that the output amplitude of the sensor has a linear relationship with the current to be measured, and it can stably output the current in the frequency range of 40⁓1500hz. The minimum measurable current amplitude is 5A. The improved current sensor has a current measurement sensitivity of 6MV/A. when measuring power frequency current, the current measurement sensitivity can reach 5mv/A