Research on Current Measurement Technology Based on Ring Point Hall Sensor

With the continuous improvement of voltage levels in the field of current measurement, the requirements for measurement and protection accuracy are also increasing. The traditional current sensor technology has many shortcomings due to its design, such as low precision and easy to be affected by external temperature. The current measurement technology of ring point Hall sensor is a current detection method evolved from the traditional Hall current measurement technology. Hall current sensor is the most commonly used means of current detection in the industrial field. This method is based on the ampere loop theorem, Hall principle and superposition principle for real-time measurement and analysis of a certain range of current. Its advantage is that it can effectively realize the electrical insulation between the measured signal and the measured signal. In this paper, the current measurement technology and its application of a ring point Hall current sensor are studied.