US6842692.pdf (1.33 MB)
Computer-controlled power wheelchair navigation system
standard
posted on 2016-06-07, 00:00 authored by Guillermo Del Castillo, Linda Fehr, Steven B. SkaarA wheelchair navigation system having motorized wheelchair which is powered by at least one onboard battery, and a battery charger. The navigation system also has a filter-based estimator with interface software running that is operated on an onboard laptop computer. Dual cameras, proximity sensors, microphones, and rotation sensors for the wheels are mounted to the wheelchair. Small markers are placed on the walls of a location or room. The navigation system uses the proximity sensors, rotation sensors and cameras in conjunction with the specialized software to determine where objects or impediments are located in the room and thereby redirect the path of the wheelchair so as to avoid such objects. The wheelchair is walked through the marked location thereby `teaching` various paths which are recorded in the computer and recalled later when the wheelchair is in use.
History
Patent Number
US 6842692 B2Other Application
10/187,989Inventor
Linda Fehr Steven B. Skaar Guillermo Del CastilloInventor from Local Institution
Steven B. SkaarAssignee
University of Notre Dame Du Lac The United States of America as represented by the Department of Veterans Affairs (Washington, DC)Date Modified
2017-08-01Language
- English
Claims
13Prior Publication Number
US 2004006422 A1Publisher
United States Patent and Trademark OfficeCooperative Patent Classification Codes
G01C 21/20 (20130101)Contributor
Steven B. SkaarInternational Patent Classification Codes
G01C 21/20 (20060101); G01C 021/00 (); G01C 022/00 (); G06G 007/78 (); G05D 001/00 ()US Patent Classification Codes
701/23; 701/25; 701/27; 701/28; 701/420; 701/539;Usage metrics
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