An Optimized Fast Calibration Algorithm for Magnetic Sensor Arrays

Title: An Optimized Fast Calibration Algorithm for Magnetic Sensor Arrays
Author: Yufei Xue, Xiaoyang Wu, Shuang Song
Affiliation: Harbin Institute of Technology, China
Abstract: Magnetic localization is widely used in applications like capsule robotics, where accurate calibration of magnetic sensor arrays is crucial. Traditional methods are time-consuming, requiring many known magnet poses, while existing rotational techniques are inefficient and demand specialized tools. To address these limitations, this paper proposes a fast calibration method based on a novel universal joint-based calibration tool. By reducing the number of optimization parameters from six to two, the method enables rapid calibration of magnetic sensor arrays. For a 4×4 sensor array, the average calibration time is under 40 seconds. Experimental results show an average position error of 1.96 mm and an average orientation error of 2.79°, demonstrating the effectiveness of the proposed method.

Видео An Optimized Fast Calibration Algorithm for Magnetic Sensor Arrays канала IEEE Sensors