Wi-Fi 신호를 사용하지 않고 보행자 궤적과 건물내 지도 특성만을 이용한 스마트폰 실내 위치 측정 시스템

Title
Wi-Fi 신호를 사용하지 않고 보행자 궤적과 건물내 지도 특성만을 이용한 스마트폰 실내 위치 측정 시스템
Other Titles
Step Trajectory/Indoor Map Feature-based Smartphone Indoor Positioning System without Using Wi-Fi Signals
Author(s)
최권휴라동준
Keywords
Indoor; Location; Positioning; Smartphone sensor; Location correctiontitle
Issue Date
201412
Publisher
대한임베디드공학회
Citation
대한임베디드공학회논문지, v.9, no.6, pp.323 - 334
Abstract
In this paper, we proposed indoor positioning system with improved accuracy. The proposed indoor location measurement system is based pedestrian location measurement method that use the embedded sensor of smartphone. So, we do not need wireless external resources, such as GPS or WiFi signals. The conventional methods measure indoor location by generating a movement route of pedestrian by step and direction recognition. In this paper, to correct the direction sensor error, we use the common feature of the normal indoor floor map that the indoor path is lattice-structured. And we quantize moving directions depending on the direction of indoor path. In addition, we propose moving direction measuring method using geomagnetic sensor and gyro sensor to improve the accuracy. Also, the proposed step detection method uses angle and accelerometer sensors. The proposed step detection method is not affected by the posture of the smartphone. Direction errors caused by direction sensor error is corrected due to proposed moving direction measuring method. The proposed location error correction method corrects location error caused by step detection error without the need for external wireless signal resources.
URI
http://hdl.handle.net/YU.REPOSITORY/30206http://dx.doi.org/10.14372/IEMEK.2014.9.6.323
ISSN
1975-5066
Appears in Collections:
공과대학 > 모바일정보통신공학과 > Articles
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