Title
Frequency Response of a Novel IR Based Pressure Sensitive Mat for Well-being Assessment
Abstract
The potential for pressure sensitive mats to provide a means for ambient well-being sensing and assessment when placed within beds or chairs has been widely studied although many mats have limitations in capability and cost. This paper presents the results for a novel pressure sensitive mat that combines an Infrared (IR) based emitter/detector proximity sensor device with a flexible gel material (Hexyoo Scientific Inc. Opus Gel). The performance results for a bench prototype sensor that combines layers of gel that have differing colour and structure properties with the sensors is shown. Specifically, the step response of the prototype is analyzed for step-up and step-down loads representing a pressure range typical for human body pressures. The results show that the frequency response for the two cases are both low-pass in nature and that the frequency response for the step-down response is a loss of 10dB at 6Hz while the step-up response is narrower with a 10dB loss at 2Hz. This bandwidth is sufficient to allow assessment of human motions with the sensor, while also using significantly simpler and lower cost technology compared to previously reported fibre optic mats.
Year
DOI
Venue
2020
10.1109/BIBE50027.2020.00083
2020 IEEE 20th International Conference on Bioinformatics and Bioengineering (BIBE)
Keywords
DocType
ISSN
pressure sensing,unobtrusive sensors,ambient sensing,pressure sensor array,IoT,cloud processing
Conference
2159-5410
ISBN
Citations 
PageRank 
978-1-7281-9575-9
0
0.34
References 
Authors
0
6
Name
Order
Citations
PageRank
Wallace, B.1519.98
Julien Larivière-Chartier232.79
Haoyang Liu300.34
Tom Sloan400.34
Rafik A. Goubran551269.23
Frank Knoefel622132.71