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Train Localization and Speed Estimation Using On-Board Inertial and Magnetic Sensors
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, Faculty of Science & Engineering.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Positioning systems for trains are traditionally based on track-side infrastructure, implying costs for both installation and maintenance. A reliable on-board system would therefore be attractive. Sufficient reliability for on-board systems is likely going to require a multi-sensor solution. This thesis investigates how measurements from bogie-mounted inertial and magnetic sensors can contribute to such a system. The first part introduces and compares two different methods for estimating the speed. The first one estimates the fundamental frequency of the variations in the magnetic field, and the second one analyses the mechanical vibrations using the accelerometer and gyro, where one mode is due to the wheel irregularities. The second part introduces and evaluates a method for train localization using magnetic signatures. The method is evaluated both as a solution for localization along a given track and at switchways. Overall, the results in both parts show that bogie-mounted inertial and magnetic sensors provide accurate estimates of both speed (within 0.5 m/s typically) and location (3-5 m accuracy typically).

Place, publisher, year, edition, pages
2015. , 70 p.
Keyword [en]
signal processing, railway tracks, trains, localization, speed estimation
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:liu:diva-121620ISRN: LiTH-ISY-EX--15/4893--SEOAI: oai:DiVA.org:liu-121620DiVA: diva2:858485
External cooperation
Deutsches Zentrum für Luft- und Raumfahrt
Subject / course
Automatic Control
Presentation
2015-09-11, Systemet, Campus Valla, Linköping, 13:15 (Swedish)
Supervisors
Examiners
Available from: 2015-10-05 Created: 2015-09-28 Last updated: 2015-10-05Bibliographically approved

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CiteExportLink to record
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  • apa
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