Improvement of Independent Directional Magnetic Field Measurement Technique with Hall Sensors

Abstract:

The independent directional magnetic field measurement is a new technique for magnetic flux density measurement with high accuracy. This technique can reduce the limitation in term of angle that magnetic flux lines interact with Hall sensors. However, the original system limits the uniformity and symmetry of magnetic field patterns, which can cause an error for measurement system. Therefore, the aim of this research is to present the method to increase measurement accuracy of system, by improve magnetic field uniformity which can be done by using electromagnet instead of permanent magnet. The system is also improved the mechanical circle motion by using stepping motor, it is used to rotate Hall sensors in magnetic field which is generated by electromagnet. The result from experiment has shown of this method that can reduce the error percentage as 5% compare with original system. This method is shown 0.99997 of coefficient of determination, which represents to accuracy in magnetic flux density measurement range 0-1350 Gauss.

• Periodical: Advanced Materials Research (Volume 811)
• Pages: 347-352
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.811.347
• Online since: September 2013
• Authors: Athirot Mano, Narin Atiwongsangthong, Wisut Titiroongruang
• Keywords: Hall Effect Sensor, Magnetic Flux Density Measurement, Trigonometric Function

References

[1] Athirot Mano, Santi Chatruprachewin, Laddawan Supadee, Chaba Suriyaammaranon and Wisut Titiroongruang, Independent Directional Magnetic Field Measurement Technique, Proceeding of the 33rd Electrical Engineering Conference(EECON-33)(2010).

DOI: 10.1109/inec.2010.5424598

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