TY - CHAP
T1 - Real-time 3d magnetometer calibration for embedded systems based on ellipsoid fitting
AU - Tedesco, Salvatore
AU - Torres-Sanchez, Javier
AU - Orflynn, Brendan
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/2
Y1 - 2018/7/2
N2 - Magnetometers are massively diffused in a variety of instruments for different applications. However, these sensors are affected by non-idealities, especially bias and hard/soft-iron interference. Even though a number of calibration approaches could be adopted to compensate for magnetic interferences, their implementation on resources-constrained platforms is still problematic due to the highly complex, computationally intensive mathematical operations involved. The present work demonstrates the possibility to develop a fast and efficient 3D magnetometer calibration for real-time embedded systems with limited system resources. A number of techniques and approaches are discussed to mitigate the computational burden. Results confirm that this is achievable by preserving the same level of accuracy reached with more computationally intensive approaches. Results are also promising regarding the adoption of the discussed method on low-power real-life systems in several applications.
AB - Magnetometers are massively diffused in a variety of instruments for different applications. However, these sensors are affected by non-idealities, especially bias and hard/soft-iron interference. Even though a number of calibration approaches could be adopted to compensate for magnetic interferences, their implementation on resources-constrained platforms is still problematic due to the highly complex, computationally intensive mathematical operations involved. The present work demonstrates the possibility to develop a fast and efficient 3D magnetometer calibration for real-time embedded systems with limited system resources. A number of techniques and approaches are discussed to mitigate the computational burden. Results confirm that this is achievable by preserving the same level of accuracy reached with more computationally intensive approaches. Results are also promising regarding the adoption of the discussed method on low-power real-life systems in several applications.
KW - 3D Magnetometer
KW - Ellipsoid Fitting
KW - On-the-Fly Calibration
KW - Real-Time Embedded Systems
UR - https://www.scopus.com/pages/publications/85061485938
U2 - 10.1109/ICSensT.2018.8603667
DO - 10.1109/ICSensT.2018.8603667
M3 - Chapter
AN - SCOPUS:85061485938
T3 - Proceedings of the International Conference on Sensing Technology, ICST
SP - 424
EP - 429
BT - 2018 12th International Conference on Sensing Technology, ICST 2018
PB - IEEE Computer Society
T2 - 12th International Conference on Sensing Technology, ICST 2018
Y2 - 4 December 2018 through 6 December 2018
ER -