Please use this identifier to cite or link to this item:
https://doi.org/10.3390/s18082447
DC Field | Value | |
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dc.title | A doppler-tolerant ultrasonic multiple access localization system for human gait analysis | |
dc.contributor.author | Ashhar, K | |
dc.contributor.author | Khyam, M.O | |
dc.contributor.author | Soh, C.B | |
dc.contributor.author | Kong, K.H | |
dc.date.accessioned | 2020-10-22T07:21:58Z | |
dc.date.available | 2020-10-22T07:21:58Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | 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 (Switzerland) 18 (8) : 2447. ScholarBank@NUS Repository. https://doi.org/10.3390/s18082447 | |
dc.identifier.issn | 14248220 | |
dc.identifier.uri | https://scholarbank.nus.edu.sg/handle/10635/179027 | |
dc.description.abstract | 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. © 2018 by the authors. Licensee MDPI, Basel, Switzerland. | |
dc.publisher | MDPI AG | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
dc.source | Unpaywall 20201031 | |
dc.subject | Cost effectiveness | |
dc.subject | Doppler effect | |
dc.subject | Mean square error | |
dc.subject | Motion analysis | |
dc.subject | Object recognition | |
dc.subject | Sporting goods | |
dc.subject | Ultrasonic applications | |
dc.subject | Ultrasonic sensors | |
dc.subject | Wearable sensors | |
dc.subject | Cost-effective methods | |
dc.subject | Doppler-shift compensation | |
dc.subject | Human movement analysis | |
dc.subject | Motion tracking | |
dc.subject | Multiple access | |
dc.subject | Narrow-band ultrasonic | |
dc.subject | Root mean square errors | |
dc.subject | Ultrasonic localization | |
dc.subject | Gait analysis | |
dc.subject | adult | |
dc.subject | electronic device | |
dc.subject | female | |
dc.subject | gait | |
dc.subject | human | |
dc.subject | leg | |
dc.subject | male | |
dc.subject | physiology | |
dc.subject | procedures | |
dc.subject | transducer | |
dc.subject | ultrasound | |
dc.subject | Adult | |
dc.subject | Female | |
dc.subject | Gait | |
dc.subject | Humans | |
dc.subject | Leg | |
dc.subject | Male | |
dc.subject | Transducers | |
dc.subject | Ultrasonics | |
dc.subject | Wearable Electronic Devices | |
dc.type | Article | |
dc.contributor.department | ELECTRICAL AND COMPUTER ENGINEERING | |
dc.description.doi | 10.3390/s18082447 | |
dc.description.sourcetitle | Sensors (Switzerland) | |
dc.description.volume | 18 | |
dc.description.issue | 8 | |
dc.description.page | 2447 | |
dc.published.state | Published | |
Appears in Collections: | Elements Staff Publications |
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