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High-resolution ultrasonic sensing for autonomous mobile systems

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vts_5884_7867.pdf (6.365Mb)
224 Seiten
Veröffentlichung
2007-04-25
Authors
Bank, Dirk
Dissertation


Faculties
Fakultät für Informatik
Abstract
New approaches in the research fields of ultrasonic sensing, environment mapping and self-localization, as well as fault detection, diagnosis, and recovery for autonomous mobile systems are presented. A concept of high-resolution ultrasonic sensing by a multi-aural sensor configuration is proposed, which incorporates cross echoes between neighbour sensors as well as multiple echoes per sensor. In order to benefit from the increased sensor information, algorithms for adequate sensor data processing and sensor data fusion have been developed. In this context, it is described how local environment models can be created at different robot locations by extracting geometric primitives from laser range finder data and from ultrasonic sensor data. Additionally, the application of an extended Kalman filter to mobile robot self-localization based on previously modeled and newly extracted geometric primitives is explained. Furthermore, it is demonstrated how local environment models can be merged for building a global environment map. As a supplement for monitoring the state of environmental sensors, a fault detection model has been developed, which consists of sub-models for data from laser range finders and ultrasonic sensors.
Date created
2005
Original publication
(Fortschrittberichte VDI : Reihe 8 ; 1086). - Düsseldorf : VDI-Verl., 2005. - ISBN 3-18-508608-2
Subject headings
[GND]: Autonomer Roboter
[LCSH]: Mobile robots | Multisensor data fusion
[Free subject headings]: Environment modeling | Fault detection and diagnosis | Laser scanner sensing | Map building | Parameter space clustering | Self-localization | Tangential regression | Ultrasonic sensing
[DDC subject group]: DDC 004 / Data processing & computer science
License
Standard (Fassung vom 03.05.2003)
https://oparu.uni-ulm.de/xmlui/license_v1

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DOI & citation

Please use this identifier to cite or link to this item: http://dx.doi.org/10.18725/OPARU-377

Bank, Dirk (2007): High-resolution ultrasonic sensing for autonomous mobile systems. Open Access Repositorium der Universität Ulm und Technischen Hochschule Ulm. Dissertation. http://dx.doi.org/10.18725/OPARU-377
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