Indoor and underground orientation and navigation by using the barometer sensor Elizaveta Karpakova, 3. Sem. Geoinformation Master mit Kaatz, Richter und Zimmermann (Geoality GbR), … und Prof. Dr. Roland-M. Wagner Droidcon 2012, Berlin, Urania, 14.3.2012
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droidcon 2012: Indoor orientation in underground based on barometer, Roland Wagner, Beuth Hochschule für Technik Berlin
Indoor orientation and navigation in buildings and underground public transport is still a challenge. A key problem is the determination of the levels, e.g. floors and platforms, especially in environments with large amount of balconies and more or less levitating escalators, lifts and stairs. Another desired application is navigation or at least orientation in public undergrounds, which is missing due to missing common available sensors. GPS is not available in tunnels. Wifi cells are very unusual at least in the Berlin underground environment. Infrastructure based sensors and communication would be able to solve a personal navigation, but requires investments. With the introduction of barometer as a sensor in the Android 2.3 API and the first available Android mobile phones with build-in barometer sensors (Xoom and Galaxy Nexus), pressure can be used to calculate altitudes or even more relevant to measure pressure differences, e.g. between building levels and stations. This talk is intended to give and get a feeling about the given accuracy and robustness in relation to indoor positioning for buildings and undergrounds and should report about the ongoing, but already promising experiments.
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Transcript
Indoor and underground orientation and navigation by using the barometer sensor
Elizaveta Karpakova, 3. Sem. Geoinformation Master mit Kaatz, Richter und Zimmermann (Geoality GbR), … und Prof. Dr. Roland-M. Wagner
Droidcon 2012, Berlin, Urania, 14.3.2012
Overview
1. Problem statement for indoor orientation & navigation
2. Application example: (Berlin) Underground
3. Approach with Barometer
4. Data-collection
5. Analysis
6. Conclusion
Beuth Hochschule für Technik Berlin – University of Applied Sciences 2
Problem statement for indoor orientation
Do you need an (outdoor) navigator?
1992: no
2012: yes
GPS is not usable for indoor orientation and positioning, other sensors are needed
Challenge: Change! More Change in indoor environment, e.g. fairs, cons
Some privacy aspects, e.g. indoormaps only for welcomed visitors and not for everybody in the net; => local infrastructure
Additional indoor information needed, e.g. pics, contact, time, location => e-flyer
An early project is: openfloormap.org
Beuth Hochschule für Technik Berlin – University of Applied Sciences 3
Application example: (Berlin) Underground
Beuth Hochschule für Technik Berlin – University of Applied Sciences 4