Impact of Sensing Area on the Precision of DC Current Measurement using Magnetic Sensor Arrays

Magnetic sensor arrays are proposed to measure the electric current in a non-contact way. In order to achieve higher accuracy, signal processing techniques for magnetic sensor arrays are utilized. As these algorithms don´t take into account the measurement errors caused by the size of the sensing area in the magnetic sensor, further analysis and discussion are necessary to improve the precision of electrical measurement using magnetic sensor array. This paper presents a method to estimate the impact of the sensing area and the error deduction algorithm of magnetic sensor arrays