A doppler-tolerant ultrasonic multiple access localization system for human gait analysis
Ranging based on ultrasonic sensors can be used for tracking wearable mobile nodes accurately for a long duration and can be a cost-effective method for human movement analysis in rehabilitation clinics. In this paper, we present a Doppler-tolerant ultrasonic multiple access localization system to a...
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sg-ntu-dr.10356-884382020-03-07T14:02:36Z A doppler-tolerant ultrasonic multiple access localization system for human gait analysis Mohammad Omar Khyam Soh, Cheong Boon Kong, Keng He Ashhar, Karalikkadan School of Electrical and Electronic Engineering Motion Tracking DRNTU::Engineering::Electrical and electronic engineering Channel Multiple Access Ranging based on ultrasonic sensors can be used for tracking wearable mobile nodes accurately for a long duration and can be a cost-effective method for human movement analysis in rehabilitation clinics. In this paper, we present a Doppler-tolerant ultrasonic multiple access localization system to analyze gait parameters in human subjects. We employ multiple access methods using linear chirp wave-forms and narrow-band piezoelectric transducers. A Doppler shift compensation Technique is also incorporated without compromising on the tracking accuracy. The system developed was used for tracking the trajectory of both lower limbs of five healthy adults during a treadmill walk. An optical motion capture system was used as the reference to compare the performance. The average Root Mean Square Error values between the 3D coordinates estimated from the proposed system and the reference system while tracking both lower limbs during treadmill walk experiment by 5 subjects were found to be 16.75, 14.68 and 20.20 mm respectively along X, Y and Z-directions. Errors in the estimation of spatial and temporal parameters from the proposed system were also quantified. These promising results show that narrowband ultrasonic sensors can be utilized to accurately track more than one mobile node for human gait analysis. Published version 2018-08-29T08:16:15Z 2019-12-06T17:03:21Z 2018-08-29T08:16:15Z 2019-12-06T17:03:21Z 2018 Journal Article Ashhar, K., Khyam, M. O., Soh, C. B., & Kong, K. H. (2018). A doppler-tolerant ultrasonic multiple access localization system for human gait analysis. Sensors, 18(8), 2447-. doi:10.3390/s18082447 1424-8220 https://hdl.handle.net/10356/88438 http://hdl.handle.net/10220/45741 10.3390/s18082447 en Sensors © 2018 The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). 20 p. application/pdf |
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Motion Tracking DRNTU::Engineering::Electrical and electronic engineering Channel Multiple Access Mohammad Omar Khyam Soh, Cheong Boon Kong, Keng He Ashhar, Karalikkadan A doppler-tolerant ultrasonic multiple access localization system for human gait analysis |
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Ranging based on ultrasonic sensors can be used for tracking wearable mobile nodes accurately for a long duration and can be a cost-effective method for human movement analysis in rehabilitation clinics. In this paper, we present a Doppler-tolerant ultrasonic multiple access localization system to analyze gait parameters in human subjects. We employ multiple access methods using linear chirp wave-forms and narrow-band piezoelectric transducers. A Doppler shift compensation Technique is also incorporated without compromising on the tracking accuracy. The system developed was used for tracking the trajectory of both lower limbs of five healthy adults during a treadmill walk. An optical motion capture system was used as the reference to compare the performance. The average Root Mean Square Error values between the 3D coordinates estimated from the proposed system and the reference system while tracking both lower limbs during treadmill walk experiment by 5 subjects were found to be 16.75, 14.68 and 20.20 mm respectively along X, Y and Z-directions. Errors in the estimation of spatial and temporal parameters from the proposed system were also quantified. These promising results show that narrowband ultrasonic sensors can be utilized to accurately track more than one mobile node for human gait analysis. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Mohammad Omar Khyam Soh, Cheong Boon Kong, Keng He Ashhar, Karalikkadan |
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Article |
author |
Mohammad Omar Khyam Soh, Cheong Boon Kong, Keng He Ashhar, Karalikkadan |
author_sort |
Mohammad Omar Khyam |
title |
A doppler-tolerant ultrasonic multiple access localization system for human gait analysis |
title_short |
A doppler-tolerant ultrasonic multiple access localization system for human gait analysis |
title_full |
A doppler-tolerant ultrasonic multiple access localization system for human gait analysis |
title_fullStr |
A doppler-tolerant ultrasonic multiple access localization system for human gait analysis |
title_full_unstemmed |
A doppler-tolerant ultrasonic multiple access localization system for human gait analysis |
title_sort |
doppler-tolerant ultrasonic multiple access localization system for human gait analysis |
publishDate |
2018 |
url |
https://hdl.handle.net/10356/88438 http://hdl.handle.net/10220/45741 |
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1681042428888350720 |