Arduino-UNO Operated Hall-effect Sensor Based Magnetic Field Strength Measurement System

Abstract

Magnetic field strength is one of two ways that the intensity of a magnetic field can be expressed. Technically, a distinction is made between magnetic field strength H, measured in amperes per meter (A/m), and magnetic flux density B, measured in Newton-meters per ampere (Nm/A), also called teslas(T). In our proposed work we are using the concept of ADC (Analog to Digital Conversion) in ARDUINO UNO. By using a Hall Effect sensor and Arduino UNO we are going to measure the field strength of a magnet by using UGN3503U sensor. This is a hall sensor which senses the magnetic field strength and provides a varying voltage at output proportional to the field strength. This sensor picks up field strength in the units of 'GAUSS'. So with this sensor we will have field strength as varying voltage. By using ADC feature we will convert this voltage to a number. This number represents the field strength and is shown on LCD.