A Novel Method of Zero Offset Reduction in Hall Effect Sensors with Applications to Magnetic Field Measurement

2014 Joint IMEKO TC1-TC7-TC13 Symposium: Measurement Science Behind Safety and Security

Liu, Cheng^1 ; Liu, Ji-Gou^1 ; Zhang, Quan^1

Chen Yang Technologies GmbH and Co. KG., Markt Schwabener Str. 8, Finsing

85464, Germany^1

关键词: Gaussmeter;    Hall-effect sensors;    Magnetic field sensing;    Measuring systems;    Zero offsets;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/588/1/012022/pdf
DOI  :  10.1088/1742-6596/588/1/012022

来源: IOP

【 摘 要 】

The paper presents a novel method to reduce the zero offset in Hall-Effect based magnetic measurement with single power supply. This method consists of a coarse zero compensation and a fine zero adjustment afterwards. By using the proposed method the zero output offset of Hall Effect sensors under using single power supply can be controlled within 0.2%. This method can be applied to all Hall Effect sensors with analog output and other similar sensors, which are powered with a single voltage or current source.