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For the first time, this paper reports a smart museum archive box that features a fully integrated wireless powered temperature and humidity sensor. The smart archive box has been specifically developed for microclimate environmental monitoring of stored museum artifacts in cultural heritage applications. The developed sensor does not require a battery and is wirelessly powered using Near Field Communications (NFC). The proposed solution enables a convenient means for wireless sensing with the operator by simply placing a standard smartphone in close proximity to the cardboard archive box. Wireless sensing capability has the advantage of enabling long-term environmental monitoring of the contents of the archive box without having to move and open the box for reading or battery replacement. This contributes to a sustainable preventive conservation strategy and avoids the risk of exposing the contents to the external environment, which may result in degradation of the stored artifacts. In this work, a low-cost and fully integrated NFC sensor has been successfully developed and demonstrated. The developed sensor is capable of wirelessly measuring temperature and relative humidity with a mean error of 0.37 °C and ±0.35%, respectively. The design has also been optimized for low power operation with a measured peak DC power consumption of 900 μW while yielding a 4.5 cm wireless communication range. The power consumption of the NFC sensor is one of the lowest found in the literature. To the author’s knowledge, the NFC sensor proposed in this paper is the first reporting of a smart archive box that is wirelessly powered and uniquely integrated within a cardboard archive box.
Dinesh Gawade; Steffen Ziemann; Sanjeev Kumar; Daniela Iacopino; Marco Belcastro; Davide Alfieri; Katharina Schuhmann; Manfred Anders; Melusine Pigeon; John Barton; Brendan O’Flynn; John Buckley. A Smart Archive Box for Museum Artifact Monitoring Using Battery-Less Temperature and Humidity Sensing. Sensors 2021, 21, 4903 .
AMA StyleDinesh Gawade, Steffen Ziemann, Sanjeev Kumar, Daniela Iacopino, Marco Belcastro, Davide Alfieri, Katharina Schuhmann, Manfred Anders, Melusine Pigeon, John Barton, Brendan O’Flynn, John Buckley. A Smart Archive Box for Museum Artifact Monitoring Using Battery-Less Temperature and Humidity Sensing. Sensors. 2021; 21 (14):4903.
Chicago/Turabian StyleDinesh Gawade; Steffen Ziemann; Sanjeev Kumar; Daniela Iacopino; Marco Belcastro; Davide Alfieri; Katharina Schuhmann; Manfred Anders; Melusine Pigeon; John Barton; Brendan O’Flynn; John Buckley. 2021. "A Smart Archive Box for Museum Artifact Monitoring Using Battery-Less Temperature and Humidity Sensing." Sensors 21, no. 14: 4903.
The increased use of sensor technology has been crucial in releasing the potential for remote rehabilitation. However, it is vital that human factors, that have potential to affect real-world use, are fully considered before sensors are adopted into remote rehabilitation practice. The smart sensor devices for rehabilitation and connected health (SENDoc) project assesses the human factors associated with sensors for remote rehabilitation of elders in the Northern Periphery of Europe. This article conducts a literature review of human factors and puts forward an objective scoring system to evaluate the feasibility of balance assessment technology for adaption into remote rehabilitation settings. The main factors that must be considered are: Deployment constraints, usability, comfort and accuracy. This article shows that improving accuracy, reliability and validity is the main goal of research focusing on developing novel balance assessment technology. However, other aspects of usability related to human factors such as practicality, comfort and ease of use need further consideration by researchers to help advance the technology to a state where it can be applied in remote rehabilitation settings.
Daniel Kelly; Karla Esquivel; James Gillespie; Joan Condell; Richard Davies; Shvan Karim; Elina Nevala; Antti Alamäki; Juha Jalovaara; John Barton; Salvatore Tedesco; Anna Nordström. Feasibility of Sensor Technology for Balance Assessment in Home Rehabilitation Settings. Sensors 2021, 21, 4438 .
AMA StyleDaniel Kelly, Karla Esquivel, James Gillespie, Joan Condell, Richard Davies, Shvan Karim, Elina Nevala, Antti Alamäki, Juha Jalovaara, John Barton, Salvatore Tedesco, Anna Nordström. Feasibility of Sensor Technology for Balance Assessment in Home Rehabilitation Settings. Sensors. 2021; 21 (13):4438.
Chicago/Turabian StyleDaniel Kelly; Karla Esquivel; James Gillespie; Joan Condell; Richard Davies; Shvan Karim; Elina Nevala; Antti Alamäki; Juha Jalovaara; John Barton; Salvatore Tedesco; Anna Nordström. 2021. "Feasibility of Sensor Technology for Balance Assessment in Home Rehabilitation Settings." Sensors 21, no. 13: 4438.
Athletic performance, technique assessment, and injury prevention are all important aspects in sports for both professional and amateur athletes. Wearable technology is attracting the research community’s interest because of its capability to provide real-time biofeedback to coaches and athletes when on the field and outside of more restrictive laboratory conditions. In this paper, a novel wearable motion sensor-based system has been designed and developed for athletic performance assessment during running and jumping tasks. The system consists of a number of components involving embedded systems (hardware and software), back-end analytics, information and communications technology (ICT) platforms, and a graphical user interface for data visualization by the coach. The system is able to provide automatic activity recognition, estimation of running and jumping metrics, as well as vertical ground reaction force (GRF) predictions, with sufficient accuracy to provide valuable information as regards training outcomes. The developed system is low-power, sufficiently small for real-world scenarios, easy to use, and achieves the specified communication range. The system’s high sampling rate, levels of accuracy and performance enables it as a performance evaluation tool able to support coaches and athletes in their real-world practice.
Salvatore Tedesco; Davide Alfieri; Eduardo Perez-Valero; Dimitrios-Sokratis Komaris; Luke Jordan; Marco Belcastro; John Barton; Liam Hennessy; Brendan O’Flynn. A Wearable System for the Estimation of Performance-Related Metrics during Running and Jumping Tasks. Applied Sciences 2021, 11, 5258 .
AMA StyleSalvatore Tedesco, Davide Alfieri, Eduardo Perez-Valero, Dimitrios-Sokratis Komaris, Luke Jordan, Marco Belcastro, John Barton, Liam Hennessy, Brendan O’Flynn. A Wearable System for the Estimation of Performance-Related Metrics during Running and Jumping Tasks. Applied Sciences. 2021; 11 (11):5258.
Chicago/Turabian StyleSalvatore Tedesco; Davide Alfieri; Eduardo Perez-Valero; Dimitrios-Sokratis Komaris; Luke Jordan; Marco Belcastro; John Barton; Liam Hennessy; Brendan O’Flynn. 2021. "A Wearable System for the Estimation of Performance-Related Metrics during Running and Jumping Tasks." Applied Sciences 11, no. 11: 5258.
Background Older adults may use wearable devices for various reasons, ranging from monitoring clinically relevant health metrics or detecting falls to monitoring physical activity. Little is known about how this population engages with wearable devices, and no qualitative synthesis exists to describe their shared experiences with long-term use. Objective This study aims to synthesize qualitative studies of user experience after a multi-day trial with a wearable device to understand user experience and the factors that contribute to the acceptance and use of wearable devices. Methods We conducted a systematic search in CINAHL, APA PsycINFO, PubMed, and Embase (2015-2020; English) with fixed search terms relating to older adults and wearable devices. A meta-synthesis methodology was used. We extracted themes from primary studies, identified key concepts, and applied reciprocal and refutational translation techniques; findings were synthesized into third-order interpretations, and finally, a “line-of-argument” was developed. Our overall goal was theory development, higher-level abstraction, and generalizability for making this group of qualitative findings more accessible. Results In total, we reviewed 20 papers; 2 evaluated fall detection devices, 1 tested an ankle-worn step counter, and the remaining 17 tested activity trackers. The duration of wearing ranged from 3 days to 24 months. The views of 349 participants (age: range 51-94 years) were synthesized. Four key concepts were identified and outlined: motivation for device use, user characteristics (openness to engage and functional ability), integration into daily life, and device features. Motivation for device use is intrinsic and extrinsic, encompassing many aspects of the user experience, and appears to be as, if not more, important than the actual device features. To overcome usability barriers, an older adult must be motivated by the useful purpose of the device. A device that serves its intended purpose adds value to the user’s life. The user’s needs and the support structure around the device—aspects that are often overlooked—seem to play a crucial role in long-term adoption. Our “line-of-argument” model describes how motivation, ease of use, and device purpose determine whether a device is perceived to add value to the user’s life, which subsequently predicts whether the device will be integrated into the user’s life. Conclusions The added value of a wearable device is the resulting balance of motivators (or lack thereof), device features (and their accuracy), ease of use, device purpose, and user experience. The added value contributes to the successful integration of the device into the daily life of the user. Useful device features alone do not lead to continued use. A support structure should be placed around the user to foster motivation, encourage peer engagement, and adapt to the user’s preferences.
Kevin Moore; Emma O'Shea; Lorna Kenny; John Barton; Salvatore Tedesco; Marco Sica; Colum Crowe; Antti Alamäki; Joan Condell; Anna Nordström; Suzanne Timmons. Older Adults’ Experiences With Using Wearable Devices: Qualitative Systematic Review and Meta-synthesis. JMIR mHealth and uHealth 2021, 9, e23832 .
AMA StyleKevin Moore, Emma O'Shea, Lorna Kenny, John Barton, Salvatore Tedesco, Marco Sica, Colum Crowe, Antti Alamäki, Joan Condell, Anna Nordström, Suzanne Timmons. Older Adults’ Experiences With Using Wearable Devices: Qualitative Systematic Review and Meta-synthesis. JMIR mHealth and uHealth. 2021; 9 (6):e23832.
Chicago/Turabian StyleKevin Moore; Emma O'Shea; Lorna Kenny; John Barton; Salvatore Tedesco; Marco Sica; Colum Crowe; Antti Alamäki; Joan Condell; Anna Nordström; Suzanne Timmons. 2021. "Older Adults’ Experiences With Using Wearable Devices: Qualitative Systematic Review and Meta-synthesis." JMIR mHealth and uHealth 9, no. 6: e23832.
Over the last few decades, a large number of pH sensitive materials with new compositions and structures have been proposed. Solid state sensors based on organic, inorganic and composite materials are actively investigated, with an increasing interest in the performance offered by nano-scale materials. Our review provides a thorough, up-to-date knowledge of a wide range of pH measurement methods and related sensing materials, firstly by introducing well established materials and methods for pH sensing and then, by covering recent developments in inorganic, organic and nano-engineered devices. The main sensor parameters, including sensitivity, stability, response time and testing conditions are reported. Given the importance of pH sensing in environmental applications, in particular seawater monitoring, sensors tested in seawater are highlighted and discussed. Graphical Abstract
Roberto Avolio; Anita Grozdanov; Maurizio Avella; John Barton; Mariacristina Cocca; Francesca De Falco; Aleksandar T. Dimitrov; Maria Emanuela Errico; Pablo Fanjul-Bolado; Gennaro Gentile; Perica Paunovic; Alberto Ribotti; Paolo Magni. Review of pH sensing materials from macro- to nano-scale: Recent developments and examples of seawater applications. Critical Reviews in Environmental Science and Technology 2020, 1 -43.
AMA StyleRoberto Avolio, Anita Grozdanov, Maurizio Avella, John Barton, Mariacristina Cocca, Francesca De Falco, Aleksandar T. Dimitrov, Maria Emanuela Errico, Pablo Fanjul-Bolado, Gennaro Gentile, Perica Paunovic, Alberto Ribotti, Paolo Magni. Review of pH sensing materials from macro- to nano-scale: Recent developments and examples of seawater applications. Critical Reviews in Environmental Science and Technology. 2020; ():1-43.
Chicago/Turabian StyleRoberto Avolio; Anita Grozdanov; Maurizio Avella; John Barton; Mariacristina Cocca; Francesca De Falco; Aleksandar T. Dimitrov; Maria Emanuela Errico; Pablo Fanjul-Bolado; Gennaro Gentile; Perica Paunovic; Alberto Ribotti; Paolo Magni. 2020. "Review of pH sensing materials from macro- to nano-scale: Recent developments and examples of seawater applications." Critical Reviews in Environmental Science and Technology , no. : 1-43.
BACKGROUND Older adults may use wearable devices for various reasons, ranging from monitoring clinically relevant health metrics or detecting falls to monitoring physical activity. Little is known about how this population engages with wearable devices, and no qualitative synthesis exists to describe their shared experiences with long-term use. OBJECTIVE This study aims to synthesize qualitative studies of user experience after a multi-day trial with a wearable device to understand user experience and the factors that contribute to the acceptance and use of wearable devices. METHODS We conducted a systematic search in CINAHL, APA PsycINFO, PubMed, and Embase (2015-2020; English) with fixed search terms relating to older adults and wearable devices. A meta-synthesis methodology was used. We extracted themes from primary studies, identified key concepts, and applied reciprocal and refutational translation techniques; findings were synthesized into third-order interpretations, and finally, a “line-of-argument” was developed. Our overall goal was theory development, higher-level abstraction, and generalizability for making this group of qualitative findings more accessible. RESULTS In total, we reviewed 20 papers; 2 evaluated fall detection devices, 1 tested an ankle-worn step counter, and the remaining 17 tested activity trackers. The duration of wearing ranged from 3 days to 24 months. The views of 349 participants (age: range 51-94 years) were synthesized. Four key concepts were identified and outlined: motivation for device use, user characteristics (openness to engage and functional ability), integration into daily life, and device features. Motivation for device use is intrinsic and extrinsic, encompassing many aspects of the user experience, and appears to be as, if not more, important than the actual device features. To overcome usability barriers, an older adult must be motivated by the useful purpose of the device. A device that serves its intended purpose adds value to the user’s life. The user’s needs and the support structure around the device—aspects that are often overlooked—seem to play a crucial role in long-term adoption. Our “line-of-argument” model describes how motivation, ease of use, and device purpose determine whether a device is perceived to add value to the user’s life, which subsequently predicts whether the device will be integrated into the user’s life. CONCLUSIONS The added value of a wearable device is the resulting balance of motivators (or lack thereof), device features (and their accuracy), ease of use, device purpose, and user experience. The added value contributes to the successful integration of the device into the daily life of the user. Useful device features alone do not lead to continued use. A support structure should be placed around the user to foster motivation, encourage peer engagement, and adapt to the user’s preferences. CLINICALTRIAL
Kevin Moore; Emma O'Shea; Lorna Kenny; John Barton; Salvatore Tedesco; Marco Sica; Colum Crowe; Antti Alamäki; Joan Condell; Anna Nordström; Suzanne Timmons. Older Adults’ Experiences With Using Wearable Devices: Qualitative Systematic Review and Meta-synthesis (Preprint). 2020, 1 .
AMA StyleKevin Moore, Emma O'Shea, Lorna Kenny, John Barton, Salvatore Tedesco, Marco Sica, Colum Crowe, Antti Alamäki, Joan Condell, Anna Nordström, Suzanne Timmons. Older Adults’ Experiences With Using Wearable Devices: Qualitative Systematic Review and Meta-synthesis (Preprint). . 2020; ():1.
Chicago/Turabian StyleKevin Moore; Emma O'Shea; Lorna Kenny; John Barton; Salvatore Tedesco; Marco Sica; Colum Crowe; Antti Alamäki; Joan Condell; Anna Nordström; Suzanne Timmons. 2020. "Older Adults’ Experiences With Using Wearable Devices: Qualitative Systematic Review and Meta-synthesis (Preprint)." , no. : 1.
A wristwatch-based wireless sensor platform for IoT wearable health monitoring applications is presented. The paper describes the platform in detail, with a particular focus given to the design of a novel and compact wireless sub-system for 868 MHz wristwatch applications. An example application using the developed platform is discussed for arterial oxygen saturation (SpO2) and heart rate measurement using optical photoplethysmography (PPG). A comparison of the wireless performance in the 868 MHz and the 2.45 GHz bands is performed. Another contribution of this work is the development of a highly integrated 868 MHz antenna. The antenna structure is printed on the surface of a wristwatch enclosure using laser direct structuring (LDS) technology. At 868 MHz, a low specific absorption rate (SAR) of less than 0.1% of the maximum permissible limit in the simulation is demonstrated. The measured on-body prototype antenna exhibits a −10 dB impedance bandwidth of 36 MHz, a peak realized gain of −4.86 dBi and a radiation efficiency of 14.53% at 868 MHz. To evaluate the performance of the developed 868 MHz sensor platform, the wireless communication range measurements are performed in an indoor environment and compared with a commercial Bluetooth wristwatch device.
Sanjeev Kumar; John L. Buckley; John Barton; Melusine Pigeon; Robert Newberry; Matthew Rodencal; Adhurim Hajzeraj; Tim Hannon; Ken Rogers; Declan Casey; Donal O’Sullivan; Brendan O’Flynn. A Wristwatch-Based Wireless Sensor Platform for IoT Health Monitoring Applications. Sensors 2020, 20, 1675 .
AMA StyleSanjeev Kumar, John L. Buckley, John Barton, Melusine Pigeon, Robert Newberry, Matthew Rodencal, Adhurim Hajzeraj, Tim Hannon, Ken Rogers, Declan Casey, Donal O’Sullivan, Brendan O’Flynn. A Wristwatch-Based Wireless Sensor Platform for IoT Health Monitoring Applications. Sensors. 2020; 20 (6):1675.
Chicago/Turabian StyleSanjeev Kumar; John L. Buckley; John Barton; Melusine Pigeon; Robert Newberry; Matthew Rodencal; Adhurim Hajzeraj; Tim Hannon; Ken Rogers; Declan Casey; Donal O’Sullivan; Brendan O’Flynn. 2020. "A Wristwatch-Based Wireless Sensor Platform for IoT Health Monitoring Applications." Sensors 20, no. 6: 1675.
John Barton; Cliona Ni; Paolo Magni; John Cleary; Javier Vilallonga; Joanna Piwowarczyk; Carles Pizarro; Emma Moynihan; Jose Alberto Sáez Zamora; Jordi Salat; Pablo Fanjul; Anita Grozdanov; Fabio Confalonieri; Yassine Lassoued; Saskia Heckmann; Mike Challiss. COMMON SENSE. International Journal on Smart Sensing and Intelligent Systems 2020, 7, 1 -6.
AMA StyleJohn Barton, Cliona Ni, Paolo Magni, John Cleary, Javier Vilallonga, Joanna Piwowarczyk, Carles Pizarro, Emma Moynihan, Jose Alberto Sáez Zamora, Jordi Salat, Pablo Fanjul, Anita Grozdanov, Fabio Confalonieri, Yassine Lassoued, Saskia Heckmann, Mike Challiss. COMMON SENSE. International Journal on Smart Sensing and Intelligent Systems. 2020; 7 (5):1-6.
Chicago/Turabian StyleJohn Barton; Cliona Ni; Paolo Magni; John Cleary; Javier Vilallonga; Joanna Piwowarczyk; Carles Pizarro; Emma Moynihan; Jose Alberto Sáez Zamora; Jordi Salat; Pablo Fanjul; Anita Grozdanov; Fabio Confalonieri; Yassine Lassoued; Saskia Heckmann; Mike Challiss. 2020. "COMMON SENSE." International Journal on Smart Sensing and Intelligent Systems 7, no. 5: 1-6.
Dimitrios-Sokratis Komaris; Eduardo Perez-Valero; Luke Jordan; John Barton; Liam Hennessy; Brendan O'flynn; Salvatore Tedesco. Effects of segment masses and cut-off frequencies on the estimation of vertical ground reaction forces in running. Journal of Biomechanics 2020, 99, 1 .
AMA StyleDimitrios-Sokratis Komaris, Eduardo Perez-Valero, Luke Jordan, John Barton, Liam Hennessy, Brendan O'flynn, Salvatore Tedesco. Effects of segment masses and cut-off frequencies on the estimation of vertical ground reaction forces in running. Journal of Biomechanics. 2020; 99 ():1.
Chicago/Turabian StyleDimitrios-Sokratis Komaris; Eduardo Perez-Valero; Luke Jordan; John Barton; Liam Hennessy; Brendan O'flynn; Salvatore Tedesco. 2020. "Effects of segment masses and cut-off frequencies on the estimation of vertical ground reaction forces in running." Journal of Biomechanics 99, no. : 1.
Few studies have investigated the validity of mainstream wrist-based activity trackers in healthy older adults in real life, as opposed to laboratory settings. This study explored the performance of two wrist-worn trackers (Fitbit Charge 2 and Garmin vivosmart HR+) in estimating steps, energy expenditure, moderate-to-vigorous physical activity (MVPA) levels, and sleep parameters (total sleep time [TST] and wake after sleep onset [WASO]) against gold-standard technologies in a cohort of healthy older adults in a free-living environment. Overall, 20 participants (>65 years) took part in the study. The devices were worn by the participants for 24 hours, and the results were compared against validated technology (ActiGraph and New-Lifestyles NL-2000i). Mean error, mean percentage error (MPE), mean absolute percentage error (MAPE), intraclass correlation (ICC), and Bland-Altman plots were computed for all the parameters considered. For step counting, all trackers were highly correlated with one another (ICCs>0.89). Although the Fitbit tended to overcount steps (MPE=12.36%), the Garmin and ActiGraph undercounted (MPE 9.36% and 11.53%, respectively). The Garmin had poor ICC values when energy expenditure was compared against the criterion. The Fitbit had moderate-to-good ICCs in comparison to the other activity trackers, and showed the best results (MAPE=12.25%), although it underestimated calories burned. For MVPA levels estimation, the wristband trackers were highly correlated (ICC=0.96); however, they were moderately correlated against the criterion and they overestimated MVPA activity minutes. For the sleep parameters, the ICCs were poor for all cases, except when comparing the Fitbit with the criterion, which showed moderate agreement. The TST was slightly overestimated with the Fitbit, although it provided good results with an average MAPE equal to 10.13%. Conversely, WASO estimation was poorer and was overestimated by the Fitbit but underestimated by the Garmin. Again, the Fitbit was the most accurate, with an average MAPE of 49.7%. The tested well-known devices could be adopted to estimate steps, energy expenditure, and sleep duration with an acceptable level of accuracy in the population of interest, although clinicians should be cautious in considering other parameters for clinical and research purposes.
Salvatore Tedesco; Marco Sica; Andrea Ancillao; Suzanne Timmons; John Barton; Brendan O'flynn. Validity Evaluation of the Fitbit Charge2 and the Garmin vivosmart HR+ in Free-Living Environments in an Older Adult Cohort. JMIR mHealth and uHealth 2019, 7, e13084 .
AMA StyleSalvatore Tedesco, Marco Sica, Andrea Ancillao, Suzanne Timmons, John Barton, Brendan O'flynn. Validity Evaluation of the Fitbit Charge2 and the Garmin vivosmart HR+ in Free-Living Environments in an Older Adult Cohort. JMIR mHealth and uHealth. 2019; 7 (6):e13084.
Chicago/Turabian StyleSalvatore Tedesco; Marco Sica; Andrea Ancillao; Suzanne Timmons; John Barton; Brendan O'flynn. 2019. "Validity Evaluation of the Fitbit Charge2 and the Garmin vivosmart HR+ in Free-Living Environments in an Older Adult Cohort." JMIR mHealth and uHealth 7, no. 6: e13084.
BACKGROUND Few studies have investigated the validity of mainstream wrist-based activity trackers in healthy older adults in real life, as opposed to laboratory settings. OBJECTIVE This study explored the performance of two wrist-worn trackers (Fitbit Charge 2 and Garmin vivosmart HR+) in estimating steps, energy expenditure, moderate-to-vigorous physical activity (MVPA) levels, and sleep parameters (total sleep time [TST] and wake after sleep onset [WASO]) against gold-standard technologies in a cohort of healthy older adults in a free-living environment. METHODS Overall, 20 participants (>65 years) took part in the study. The devices were worn by the participants for 24 hours, and the results were compared against validated technology (ActiGraph and New-Lifestyles NL-2000i). Mean error, mean percentage error (MPE), mean absolute percentage error (MAPE), intraclass correlation (ICC), and Bland-Altman plots were computed for all the parameters considered. RESULTS For step counting, all trackers were highly correlated with one another (ICCs>0.89). Although the Fitbit tended to overcount steps (MPE=12.36%), the Garmin and ActiGraph undercounted (MPE 9.36% and 11.53%, respectively). The Garmin had poor ICC values when energy expenditure was compared against the criterion. The Fitbit had moderate-to-good ICCs in comparison to the other activity trackers, and showed the best results (MAPE=12.25%), although it underestimated calories burned. For MVPA levels estimation, the wristband trackers were highly correlated (ICC=0.96); however, they were moderately correlated against the criterion and they overestimated MVPA activity minutes. For the sleep parameters, the ICCs were poor for all cases, except when comparing the Fitbit with the criterion, which showed moderate agreement. The TST was slightly overestimated with the Fitbit, although it provided good results with an average MAPE equal to 10.13%. Conversely, WASO estimation was poorer and was overestimated by the Fitbit but underestimated by the Garmin. Again, the Fitbit was the most accurate, with an average MAPE of 49.7%. CONCLUSIONS The tested well-known devices could be adopted to estimate steps, energy expenditure, and sleep duration with an acceptable level of accuracy in the population of interest, although clinicians should be cautious in considering other parameters for clinical and research purposes.
Salvatore Tedesco; Marco Sica; Andrea Ancillao; Suzanne Timmons; John Barton; Brendan O'flynn. Validity Evaluation of the Fitbit Charge2 and the Garmin vivosmart HR+ in Free-Living Environments in an Older Adult Cohort (Preprint). 2018, 1 .
AMA StyleSalvatore Tedesco, Marco Sica, Andrea Ancillao, Suzanne Timmons, John Barton, Brendan O'flynn. Validity Evaluation of the Fitbit Charge2 and the Garmin vivosmart HR+ in Free-Living Environments in an Older Adult Cohort (Preprint). . 2018; ():1.
Chicago/Turabian StyleSalvatore Tedesco; Marco Sica; Andrea Ancillao; Suzanne Timmons; John Barton; Brendan O'flynn. 2018. "Validity Evaluation of the Fitbit Charge2 and the Garmin vivosmart HR+ in Free-Living Environments in an Older Adult Cohort (Preprint)." , no. : 1.
In the last few years, estimating ground reaction forces by means of wearable sensors has come to be a challenging research topic paving the way to kinetic analysis and sport performance testing outside of labs. One possible approach involves estimating the ground reaction forces from kinematic data obtained by inertial measurement units (IMUs) worn by the subject. As estimating kinetic quantities from kinematic data is not an easy task, several models and protocols have been developed over the years. Non-wearable sensors, such as optoelectronic systems along with force platforms, remain the most accurate systems to record motion. In this review, we identified, selected and categorized the methodologies for estimating the ground reaction forces from IMUs as proposed across the years. Scopus, Google Scholar, IEEE Xplore, and PubMed databases were interrogated on the topic of Ground Reaction Forces estimation based on kinematic data obtained by IMUs. The identified papers were classified according to the methodology proposed: (i) methods based on direct modelling; (ii) methods based on machine learning. The methods based on direct modelling were further classified according to the task studied (walking, running, jumping, etc.). Finally, we comparatively examined the methods in order to identify the most reliable approaches for the implementation of a ground reaction force estimator based on IMU data.
Andrea Ancillao; Salvatore Tedesco; John Barton; Brendan O’Flynn. Indirect Measurement of Ground Reaction Forces and Moments by Means of Wearable Inertial Sensors: A Systematic Review. Sensors 2018, 18, 2564 .
AMA StyleAndrea Ancillao, Salvatore Tedesco, John Barton, Brendan O’Flynn. Indirect Measurement of Ground Reaction Forces and Moments by Means of Wearable Inertial Sensors: A Systematic Review. Sensors. 2018; 18 (8):2564.
Chicago/Turabian StyleAndrea Ancillao; Salvatore Tedesco; John Barton; Brendan O’Flynn. 2018. "Indirect Measurement of Ground Reaction Forces and Moments by Means of Wearable Inertial Sensors: A Systematic Review." Sensors 18, no. 8: 2564.
Internet of Things (IoT) technology is rapidly emerging in medical applications as it offers the possibility of lower-cost personalized healthcare monitoring. At the present time, the 2.45 GHz band is in widespread use for these applications but in this paper, the authors investigate the potential of the 915 MHz ISM band in implementing future, wearable IoT devices. The target sensor is a wrist-worn wireless heart rate and arterial oxygen saturation (SpO2) monitor with the goal of providing efficient wireless functionality and long battery lifetime using a commercial Sub-GHz low-power radio transceiver. A detailed analysis of current consumption for various wireless protocols is also presented and analyzed. A novel 915 MHz antenna design of compact size is reported that has good resilience to detuning by the human body. The antenna also incorporates a matching network to meet the challenging bandwidth requirements and is fabricated using standard, low-cost FR-4 material. Full-Wave EM simulations are presented for the antenna placed in both free-space and on-body cases. A prototype antenna is demonstrated and has dimensions of 44 mm × 28 mm × 1.6 mm. The measured results at 915 MHz show a 10 dB return loss bandwidth of 55 MHz, a peak realized gain of −2.37 dBi in free-space and −6.1 dBi on-body. The paper concludes by highlighting the potential benefits of 915 MHz operation for future IoT devices.
Adolfo Di Serio; John Buckley; John Barton; Robert Newberry; Matthew Rodencal; Gary Dunlop; Brendan O'flynn. Potential of Sub-GHz Wireless for Future IoT Wearables and Design of Compact 915 MHz Antenna. Sensors 2017, 18, 22 .
AMA StyleAdolfo Di Serio, John Buckley, John Barton, Robert Newberry, Matthew Rodencal, Gary Dunlop, Brendan O'flynn. Potential of Sub-GHz Wireless for Future IoT Wearables and Design of Compact 915 MHz Antenna. Sensors. 2017; 18 (1):22.
Chicago/Turabian StyleAdolfo Di Serio; John Buckley; John Barton; Robert Newberry; Matthew Rodencal; Gary Dunlop; Brendan O'flynn. 2017. "Potential of Sub-GHz Wireless for Future IoT Wearables and Design of Compact 915 MHz Antenna." Sensors 18, no. 1: 22.
The objective assessment of physical activity levels through wearable inertial-based motion detectors for the automatic, continuous and long-term monitoring of people in free-living environments is a well-known research area in the literature. However, their application to older adults can present particular constraints. This paper reviews the adoption of wearable devices in senior citizens by describing various researches for monitoring physical activity indicators, such as energy expenditure, posture transitions, activity classification, fall detection and prediction, gait and balance analysis, also by adopting consumer-grade fitness trackers with the associated limitations regarding acceptability. This review also describes and compares existing commercial products encompassing activity trackers tailored for older adults, thus providing a comprehensive outlook of the status of commercially available motion tracking systems. Finally, the impact of wearable devices on life and health insurance companies, with a description of the potential benefits for the industry and the wearables market, was analyzed as an example of the potential emerging market drivers for such technology in the future.
Salvatore Tedesco; John Barton; Brendan O’Flynn. A Review of Activity Trackers for Senior Citizens: Research Perspectives, Commercial Landscape and the Role of the Insurance Industry. Sensors 2017, 17, 1277 .
AMA StyleSalvatore Tedesco, John Barton, Brendan O’Flynn. A Review of Activity Trackers for Senior Citizens: Research Perspectives, Commercial Landscape and the Role of the Insurance Industry. Sensors. 2017; 17 (6):1277.
Chicago/Turabian StyleSalvatore Tedesco; John Barton; Brendan O’Flynn. 2017. "A Review of Activity Trackers for Senior Citizens: Research Perspectives, Commercial Landscape and the Role of the Insurance Industry." Sensors 17, no. 6: 1277.
Measuring an arrow's ballistic performance such as arrow velocity on impact, total time of flight and arrow shaft oscillation is challenging because of the dynamic nature of arrow flight. This challenge becomes increasingly difficult as the distance of the shot increases. It is also of great interest to bowhunters to understand the ballistic performance of arrows that include hunting broadheads. A miniaturized, sensory data acquisition system, located in the arrow tip and engineered to withstand the high accelerations experienced at launch and impact, enables the precise measurement of arrow ballistics in flight. By continuously recording arrow drag in flight, the system enables measurement of the ballistic performance of an arrow as it travels downrange. The authors have also built an adapter that is connected to the housing of the sensing system to allow for comparative ballistic tests to be performed on hunting broadheads. Here, we present results obtained using the sensing system to perform initial testing on two commercially available broadheads at shot distances of approximately 45 m.
John Barton; Jan Včelák; Javier Torres-Sanchez; Brendan O’Flynn; Cian O’Mathuna; Robert V. Donahoe. Arrow-mounted Ballistic System for Measuring Performance of Arrows Equipped with Hunting Broadheads. Procedia Engineering 2012, 34, 455 -460.
AMA StyleJohn Barton, Jan Včelák, Javier Torres-Sanchez, Brendan O’Flynn, Cian O’Mathuna, Robert V. Donahoe. Arrow-mounted Ballistic System for Measuring Performance of Arrows Equipped with Hunting Broadheads. Procedia Engineering. 2012; 34 ():455-460.
Chicago/Turabian StyleJohn Barton; Jan Včelák; Javier Torres-Sanchez; Brendan O’Flynn; Cian O’Mathuna; Robert V. Donahoe. 2012. "Arrow-mounted Ballistic System for Measuring Performance of Arrows Equipped with Hunting Broadheads." Procedia Engineering 34, no. : 455-460.
A hybrid methodology is proposed for use in low power, safety critical wireless sensor network applications, where quality-of-service orientated transceiver output power control is required to operate in parallel with radio frequency-based localization. The practical implementation is framed in an experimental procedure designed to track a moving agent in a realistic indoor environment. An adaptive time synchronized approach is employed to ensure the positioning technique can operate effectively in the presence of dataloss and where the transmitter output power of the mobile agent is varying due to power control. A deterministic multilateration-based positioning approach is adopted and accuracy is improved by filtering signal strength measurements overtime to account for multipath fading. The location estimate is arrived at by employing least-squares estimation. Power control is implemented at two separate levels in the network topology. First, power control is applied to the uplink between the tracking reference nodes and the centralized access point. A number of algorithms are implemented highlighting the advantage associated with using additional feedback bandwidth, where available, and also the need for effective time delay compensation. The second layer of power control is implemented on the uplink between the mobile agent and the access point and here quantifiable improvements in quality of service and energy efficiency are observed. The hybrid paradigm is extensively tested experimentally on a fully compliant 802.15.4 testbed, where mobility is considered in the problem formulation using a team of fully autonomous robots.
Michael J. Walsh; Anthony Fee; John Barton; Brendan O’Flynn; Martin J. Hayes; Cian O’Mathuna. On localization with robust power control for safety critical wireless sensor networks. Journal of Control Theory and Applications 2011, 9, 83 -92.
AMA StyleMichael J. Walsh, Anthony Fee, John Barton, Brendan O’Flynn, Martin J. Hayes, Cian O’Mathuna. On localization with robust power control for safety critical wireless sensor networks. Journal of Control Theory and Applications. 2011; 9 (1):83-92.
Chicago/Turabian StyleMichael J. Walsh; Anthony Fee; John Barton; Brendan O’Flynn; Martin J. Hayes; Cian O’Mathuna. 2011. "On localization with robust power control for safety critical wireless sensor networks." Journal of Control Theory and Applications 9, no. 1: 83-92.
Dual-layer frequency-selective subwavelength grid polarizers on thin-film dielectric substrates are proposed for THz and sub-THz applications. The dual-layer grids possess enhanced (squared) polarizing efficiency at a sequence of discrete frequencies in reflection and within extended frequency bands in transmission as compared to conventional single grids.
Vladimir Yurchenko; John Anthony Murphy; John Barton; Jaap Verheggen; Ken Rodgers. Dual-Layer Frequency-Selective Grid Polarizers on Thin-Film Substrates for THz Applications. 2008 38th European Microwave Conference 2008, 1 .
AMA StyleVladimir Yurchenko, John Anthony Murphy, John Barton, Jaap Verheggen, Ken Rodgers. Dual-Layer Frequency-Selective Grid Polarizers on Thin-Film Substrates for THz Applications. 2008 38th European Microwave Conference. 2008; ():1.
Chicago/Turabian StyleVladimir Yurchenko; John Anthony Murphy; John Barton; Jaap Verheggen; Ken Rodgers. 2008. "Dual-Layer Frequency-Selective Grid Polarizers on Thin-Film Substrates for THz Applications." 2008 38th European Microwave Conference , no. : 1.
This paper will describe the design, fabrication, operation, and test results of a miniature wireless inertial measurement unit (WIMU) with a form factor of 10 mm. Many types of Inertial Measurement Units(IMU) have been designed and manufactured by prominent companies such as Crossbow, Xsens, O NAVI and Honeywell, among many others. American GNC Corporation currently claims to have the world's smallest IMU[1]. Most of these IMUs are aimed at aerospace and other types of navigation, which is why miniaturisation has not been a priority. However, with the onset and development of MEMS technology, novel applications have been found for those MEMS sensors employed in an IMU. Head mounted displays, Segways and mobile phones are among the new products taking advantage of miniaturised MEMS inertial sensors. The current WIMU development is a step along the roadmap of the AES team at Tyndall National Institute towards miniaturisation and works from the current standard, the 25 mm platform [2]. A 25 mm stacked SMT IMU has been successfully developed and tested [3,4]. The goal now is to develop an even smaller version of this IMU by using advanced technology such as flexible substrates and flip-chip technique. These miniaturised IMU's are required for wearable and medical applications where size and weight are priorities. Our WIMU uses bare-die versions of off-the-shelf MEMS sensors. The Inertial Measurement Unit itself is designed to give full six degrees of freedom with 3-axis for each of the sensors-accelerometers, gyroscopes and magnetometers.
J Barton; A Gonzalez; J Buckley; B O'flynn; S C O'mathuna. Design, Fabrication and Testing of Miniaturised Wireless Inertial Measurement Units (IMU). 2007 Proceedings 57th Electronic Components and Technology Conference 2007, 1143 -1148.
AMA StyleJ Barton, A Gonzalez, J Buckley, B O'flynn, S C O'mathuna. Design, Fabrication and Testing of Miniaturised Wireless Inertial Measurement Units (IMU). 2007 Proceedings 57th Electronic Components and Technology Conference. 2007; ():1143-1148.
Chicago/Turabian StyleJ Barton; A Gonzalez; J Buckley; B O'flynn; S C O'mathuna. 2007. "Design, Fabrication and Testing of Miniaturised Wireless Inertial Measurement Units (IMU)." 2007 Proceedings 57th Electronic Components and Technology Conference , no. : 1143-1148.
Wireless sensor networks are collections of autonomous devices with computational, sensing and wireless communication capabilities. Research in this area has been growing in the past few years given the wide range of applications that can benefit from such a technology. This paper describes a customisable sensor–actuator interface board for use in a highly modular and miniaturised wireless platform. The interface board has a 25 mm × 25 mm form factor and allows any combination of eight different sensors and actuators to be connected to the Tyndall25 Mote that contains the computational/RF components. It can also be used in conjunction with various other developed layers in the 25 mm system for specific applications. One intended application area of this hardware is in the horticultural/agricultural industry.
J. Barton; G. Hynes; B. O’Flynn; K. Aherne; A. Norman; A. Morrissey. 25mm sensor–actuator layer: A miniature, highly adaptable interface layer. Sensors and Actuators A: Physical 2006, 132, 362 -369.
AMA StyleJ. Barton, G. Hynes, B. O’Flynn, K. Aherne, A. Norman, A. Morrissey. 25mm sensor–actuator layer: A miniature, highly adaptable interface layer. Sensors and Actuators A: Physical. 2006; 132 (1):362-369.
Chicago/Turabian StyleJ. Barton; G. Hynes; B. O’Flynn; K. Aherne; A. Norman; A. Morrissey. 2006. "25mm sensor–actuator layer: A miniature, highly adaptable interface layer." Sensors and Actuators A: Physical 132, no. 1: 362-369.