AN INVESTIGATION OF THE EFFECTS OF MAGNETIC VARIATIONS ON INERTIAL/MAGNETIC ORIENTATION SENSORS

AN INVESTIGATION OF THE EFFECTS OF MAGNETIC VARIATIONS ON INERTIAL/MAGNETIC ORIENTATION SENSORS

Bibliographic Details
Main Author: Peterson, Christopher W.
Language:English
Published: Miami University / OhioLINK 2003
Subjects:
Computer Science
Orientation
Sensors
Virtual
Reality
Variations
Inertia
Magnetic
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=miami1063132921
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-miami10631329212021-08-03T05:39:12Z AN INVESTIGATION OF THE EFFECTS OF MAGNETIC VARIATIONS ON INERTIAL/MAGNETIC ORIENTATION SENSORS Peterson, Christopher W. Computer Science Orientation Sensors Virtual Reality Variations Inertia Magnetic Sourceless human posture tracking in real-time can be accomplished using small inexpensive inertial/magnetic (IM) sensor modules to track the orientation of individual limb segments. Three magnetometers, accelerometers, and angular rate sensors are each aligned orthogonally in the sensor modules. The magnetometers measure the orientation change of the sensor relative to the local magnetic field. A question related to this particular tracking method is to what degree the inexpensive IM sensors are affected by local variations in the earth magnetic field. This thesis describes and documents experiments related to magnetic variations on IM sensors. These experiments begin to build fundamental knowledge about these sensors and how they interact with the environment in order to establish a basis for possible corrective algorithms. The investigation includes, testing the IM sensors to determine their sensitivity to local magnetic field changes, and investigating the magnetic variations produced by small appliances and ferrous objects. Results indicate that local magnetic variations cause errors in only azimuth estimation regardless of sensor module orientation and that these errors can be avoided by maintaining a distance of one to two feet from the source of interference. Examination of the nature of the variation indicates that alternating field sources of interference could be reduced through the use of a notch filter tuned to the appropriate frequency. 2003-09-10 English text Miami University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=miami1063132921 http://rave.ohiolink.edu/etdc/view?acc_num=miami1063132921 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Computer Science
Orientation
Sensors
Virtual
Reality
Variations
Inertia
Magnetic
spellingShingle Computer Science
Orientation
Sensors
Virtual
Reality
Variations
Inertia
Magnetic
Peterson, Christopher W.
AN INVESTIGATION OF THE EFFECTS OF MAGNETIC VARIATIONS ON INERTIAL/MAGNETIC ORIENTATION SENSORS
author Peterson, Christopher W.
author_facet Peterson, Christopher W.
author_sort Peterson, Christopher W.
title AN INVESTIGATION OF THE EFFECTS OF MAGNETIC VARIATIONS ON INERTIAL/MAGNETIC ORIENTATION SENSORS
title_short AN INVESTIGATION OF THE EFFECTS OF MAGNETIC VARIATIONS ON INERTIAL/MAGNETIC ORIENTATION SENSORS
title_full AN INVESTIGATION OF THE EFFECTS OF MAGNETIC VARIATIONS ON INERTIAL/MAGNETIC ORIENTATION SENSORS
title_fullStr AN INVESTIGATION OF THE EFFECTS OF MAGNETIC VARIATIONS ON INERTIAL/MAGNETIC ORIENTATION SENSORS
title_full_unstemmed AN INVESTIGATION OF THE EFFECTS OF MAGNETIC VARIATIONS ON INERTIAL/MAGNETIC ORIENTATION SENSORS
title_sort investigation of the effects of magnetic variations on inertial/magnetic orientation sensors
publisher Miami University / OhioLINK
publishDate 2003
url http://rave.ohiolink.edu/etdc/view?acc_num=miami1063132921
work_keys_str_mv AT petersonchristopherw aninvestigationoftheeffectsofmagneticvariationsoninertialmagneticorientationsensors
AT petersonchristopherw investigationoftheeffectsofmagneticvariationsoninertialmagneticorientationsensors
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