基于霍尔元件的大电流测定仪的设计

摘要

In this paper,a high current instrument is designed to measure AC/DC with Hall element, whose basic principle of the measurement is:showing the size of the measured current by measuring the size of magnetic field caused by measured current. The size of magnetic field is converted into the Hall voltage through the Hall sensor,and displayed on the LCD screen after a SCM processing. The current measurement ranges from 0. 1A to 500A and measurement accuracy is up to effective 3-digit figures. The instrument pro-vides the measurement of high DC with a better way.%利用霍尔元件设计一种能测量交、直流大电流的仪器，其基本测量原理是：通过测量被测电流的磁场大小来显示被测电流的大小，磁场大小通过霍尔传感器转换成霍尔电压，再经过单片机处理后在液晶屏上显示。电流测量范围为0．1~500 A，测量精度达3位有效数字。