Using simple harmonic motion to estimate walking distance for waist-mounted PDR

Kun Chan Lan, Wen Yuah Shih

Research output: Chapter in Book/Report/Conference proceedingConference contribution

24 Citations (Scopus)

Abstract

A huge body of work utilized signal strength of short range signal (such as WiFi, Bluetooth, ultra sound or Infrared) to build a radio map for indoor localization, by deploying a great number of beacon nodes in the building. The drawback of such an infrastructure-based approach is that the deployment and calibration of the system is costly and labor-intensive. To overcome that, some prior studies proposed the use of Pedestrian Dead Reckoning (PDR) for indoor localization. The PDR system does not require to build a beacon-based infrastructure, in which a small number of sensors are put on the pedestrian. These sensors (such as G-sensor and Gyro) are used to estimate the distance and direction that the user traveled. The PDR approach can be generally categorized into two types: foot-mounted and waist-mounted. In general, the foot-mounted system can get accurate step length, but perform poorly in estimated heading direction. On the other hand, the waist-mounted system can estimate direction with high accuracy, but is hard to measure the step length. In this work, we proposed a waist-mounted based PDR using one 3-axis accelerometer and one gyroscope sensor. We utilize vertical acceleration to implement double integral for measuring the user's instant height change and use some physical features of vertical acceleration during the walking to calibrate the measurement. Then based on the Pythagoras' Theorem, we can estimate each step length based on the user's height change during his/her walking. Our experiment results show that the accuracy is about 98.26% in estimating the user's walking distance.

Original languageEnglish
Title of host publication2012 IEEE Wireless Communications and Networking Conference, WCNC 2012
Pages2445-2450
Number of pages6
DOIs
Publication statusPublished - 2012 Aug 1
Event2012 IEEE Wireless Communications and Networking Conference, WCNC 2012 - Paris, France
Duration: 2012 Apr 12012 Apr 4

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Other

Other2012 IEEE Wireless Communications and Networking Conference, WCNC 2012
CountryFrance
CityParis
Period12-04-0112-04-04

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Lan, K. C., & Shih, W. Y. (2012). Using simple harmonic motion to estimate walking distance for waist-mounted PDR. In 2012 IEEE Wireless Communications and Networking Conference, WCNC 2012 (pp. 2445-2450). [6214207] (IEEE Wireless Communications and Networking Conference, WCNC). https://doi.org/10.1109/WCNC.2012.6214207