Poster Abstract: MapSentinel: Map-Aided Non-intrusive Indoor Tracking in Sensor-Rich Environments

Date

2015-11-05

Author

Jia, Ruoxi
Jin, Ming
Zou, Han
Yesilata, Yigitcan
Xie, Lihua
Spanos, Costas

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Estimating an occupant's location is arguably the most fundamental sensing task in smart buildings. Existing indoor tracking systems require occupants to carry specialized devices or install programs on their smartphones to collect inertial sensing data. In this paper, we propose MapSentinel, which performs non-intrusive location sensing based on WiFi access points and ultrasonic sensors. MapSentinel also combines the noisy sensor readings with the floormap information. Instead of using floormap merely to conduct sanity check of walking trajectories, we exploit the motion characteristics of occupants available from the floormap to enhance our location estimation. The fusion of heterogeneous information is theoretically formulated within the Factor Graph framework and the inference algorithm based on Particle Filtering is developed to efficiently solve real-time walking trajectories. Our evaluation in a large office space shows that the MapSentinel can achieve significant accuracy improvements compared with the purely WiFi-based tracking system.

Subject Keywords

Indoor tracking systems, Non-intrusive, Map-aided, WiFi, Ultrasonic sensor network, Particle filters

URI

https://hdl.handle.net/11511/68254

DOI

https://doi.org/10.1145/2821650.2830302

Collections

Department of Electrical and Electronics Engineering, Article

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Citation Formats

R. Jia, M. Jin, H. Zou, Y. Yesilata, L. Xie, and C. Spanos, “Poster Abstract: MapSentinel: Map-Aided Non-intrusive Indoor Tracking in Sensor-Rich Environments,” pp. 109–110, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/68254.