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Sensors 2018, 18(2), 332; https://doi.org/10.3390/s18020332

Passive Infrared (PIR)-Based Indoor Position Tracking for Smart Homes Using Accessibility Maps and A-Star Algorithm

1
School of Information Science and Engineering, Northeastern University, Shenyang 110819, China
2
School of Physics, Northeast Normal University, Changchun 130000, China
3
School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK 74074, USA
*
Author to whom correspondence should be addressed.
Received: 13 December 2017 / Revised: 16 January 2018 / Accepted: 22 January 2018 / Published: 24 January 2018
(This article belongs to the Special Issue Smart Homes)
Full-Text   |   PDF [5809 KB, uploaded 24 January 2018]   |  

Abstract

Indoor occupants’ positions are significant for smart home service systems, which usually consist of robot service(s), appliance control and other intelligent applications. In this paper, an innovative localization method is proposed for tracking humans’ position in indoor environments based on passive infrared (PIR) sensors using an accessibility map and an A-star algorithm, aiming at providing intelligent services. First the accessibility map reflecting the visiting habits of the occupants is established through the integral training with indoor environments and other prior knowledge. Then the PIR sensors, which placement depends on the training results in the accessibility map, get the rough location information. For more precise positioning, the A-start algorithm is used to refine the localization, fused with the accessibility map and the PIR sensor data. Experiments were conducted in a mock apartment testbed. The ground truth data was obtained from an Opti-track system. The results demonstrate that the proposed method is able to track persons in a smart home environment and provide a solution for home robot localization. View Full-Text
Keywords: smart home; indoor position tracking; PIR sensors; accessibility map; A-start algorithm smart home; indoor position tracking; PIR sensors; accessibility map; A-start algorithm
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Yang, D.; Xu, B.; Rao, K.; Sheng, W. Passive Infrared (PIR)-Based Indoor Position Tracking for Smart Homes Using Accessibility Maps and A-Star Algorithm. Sensors 2018, 18, 332.

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