Joint flexion/extension angle estimation using ultra-wideband (UWB) radios

Joint flexion/extension angle parameter is essential for investigating complex gait disorders, and monitoring of process in rehabilitation. This is very important for medical applications. There are many methods to measure the joint flexion/extension angle. Comparing with other measuring methods, we...

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Main Author: Liu, Hao
Other Authors: Soh Cheong Boon
Format: Final Year Project
Language:English
Published: 2014
Subjects:
Online Access:http://hdl.handle.net/10356/61347
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-613472023-07-07T16:17:59Z Joint flexion/extension angle estimation using ultra-wideband (UWB) radios Liu, Hao Soh Cheong Boon School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Control and instrumentation::Medical electronics Joint flexion/extension angle parameter is essential for investigating complex gait disorders, and monitoring of process in rehabilitation. This is very important for medical applications. There are many methods to measure the joint flexion/extension angle. Comparing with other measuring methods, wearable Ultra Wideband (UWB) radio is good candidate for human motion tracking due to its high ranging and positioning accuracy, low cost, less power consumption and robust performance in various environments. The purpose of this report is to present a wearable system for estimating human elbow joint flexion/extension angle based on Ultra Wideband radios. A UWB transmitting antenna and a receiving antenna were placed on human elbow adjacent segments. Goniometer was attached on human elbow with UWB transceivers together to ensure the measurement could be conducted under same reference frame for comparison. The distances were calculated between transmitter and receiver through the estimation of propagation delay. Time of arrival (TOA) of the first arrival path is the most common method to estimate the distance. Lastly, the estimated distance was used to estimate the joint flexion/extension angle by applying anti-cosine rule. The performance of this wearable UWB based system was compared with the goniometer by simultaneously measuring elbow joint angle at three different moving speeds. The experimental results demonstrate that the system has reasonable performance with a slightly increase in error. It is shown that the system has sufficient accuracy for clinical applications. Bachelor of Engineering 2014-06-09T05:40:34Z 2014-06-09T05:40:34Z 2014 2014 Final Year Project (FYP) http://hdl.handle.net/10356/61347 en Nanyang Technological University 50 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering::Control and instrumentation::Medical electronics
spellingShingle DRNTU::Engineering::Electrical and electronic engineering::Control and instrumentation::Medical electronics
Liu, Hao
Joint flexion/extension angle estimation using ultra-wideband (UWB) radios
description Joint flexion/extension angle parameter is essential for investigating complex gait disorders, and monitoring of process in rehabilitation. This is very important for medical applications. There are many methods to measure the joint flexion/extension angle. Comparing with other measuring methods, wearable Ultra Wideband (UWB) radio is good candidate for human motion tracking due to its high ranging and positioning accuracy, low cost, less power consumption and robust performance in various environments. The purpose of this report is to present a wearable system for estimating human elbow joint flexion/extension angle based on Ultra Wideband radios. A UWB transmitting antenna and a receiving antenna were placed on human elbow adjacent segments. Goniometer was attached on human elbow with UWB transceivers together to ensure the measurement could be conducted under same reference frame for comparison. The distances were calculated between transmitter and receiver through the estimation of propagation delay. Time of arrival (TOA) of the first arrival path is the most common method to estimate the distance. Lastly, the estimated distance was used to estimate the joint flexion/extension angle by applying anti-cosine rule. The performance of this wearable UWB based system was compared with the goniometer by simultaneously measuring elbow joint angle at three different moving speeds. The experimental results demonstrate that the system has reasonable performance with a slightly increase in error. It is shown that the system has sufficient accuracy for clinical applications.
author2 Soh Cheong Boon
author_facet Soh Cheong Boon
Liu, Hao
format Final Year Project
author Liu, Hao
author_sort Liu, Hao
title Joint flexion/extension angle estimation using ultra-wideband (UWB) radios
title_short Joint flexion/extension angle estimation using ultra-wideband (UWB) radios
title_full Joint flexion/extension angle estimation using ultra-wideband (UWB) radios
title_fullStr Joint flexion/extension angle estimation using ultra-wideband (UWB) radios
title_full_unstemmed Joint flexion/extension angle estimation using ultra-wideband (UWB) radios
title_sort joint flexion/extension angle estimation using ultra-wideband (uwb) radios
publishDate 2014
url http://hdl.handle.net/10356/61347
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