Inexpensive and automatic calibration for acceleration sensors

Authors:
Albert Krohn;Michael Beigl;Christian Decker;Uwe Kochendörfer;Philip Robinson;Tobias Zimmer
Affiliations:
Telecooperation Office (TecO), Universität Karlsruhe;Telecooperation Office (TecO), Universität Karlsruhe;Telecooperation Office (TecO), Universität Karlsruhe;Telecooperation Office (TecO), Universität Karlsruhe;Telecooperation Office (TecO), Universität Karlsruhe;Telecooperation Office (TecO), Universität Karlsruhe
Venue:
UCS'04 Proceedings of the Second international conference on Ubiquitous Computing Systems
Year:
2004

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Abstract

In this paper, we present two methods for calibration of acceleration sensors that are inexpensive, in-situ, require minimum user interaction and are targeted to a broad set of acceleration sensor applications and devices. We overcome the necessity of orthogonal axes alignment by extending existing calibration methods with a non-orthogonal axes model. Our non-orthogonal method can furthermore be used to enable automatic calibration for 1- or 2-axes accelerometers or realize a simultaneous mass-calibration of sensors with minimum effort. The influence of noise to the presented calibration methods is analysed.