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Designing a Smart Bath Assistive Device Based on Measuring Inner Water Temperature for Bathing Temperature Monitoring

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Affiliated Author(s)
이재호
Alternative Author(s)
Lee, Jae Ho
Journal Title
Sensors (Basel)
ISSN
1424-8220
Issued Date
2020
Keyword
bathwater temperature measurementwater depthIoTcurve fittingcompensation algorithm
Abstract
Today, taking a bath is not only a means to keep clean, but also to reduce fatigue and stress. However, taking a bath with hot water for a long time can also be dangerous, leading to scalding or even a heart attack. To prevent these risks, several studies based on measuring bio-signals have been conducted, but due to high prices, difficulty of use, and restricted functions, these studies' recommendations cannot be easily adopted by the public. Therefore, developing accurate methods to measure bathing temperature and bathing time should be the most direct approach to solve these problems. In this study, a smart bath assistive device based on an inner water temperature measurement function is proposed. Prior to development of the device, a bathing environment was emulated with six temperature sensors affixed to different depths to find the optimal depth for measuring bathing temperature. According to the measurement results, the device was designed in a mushroom shape with the cap part floating on the water's surface and housing the electronic components, and temperature sensors within the stem part were immersed in the water approximately 5 cm below the surface to measure the inner water temperature. Due to the low-power consuming Advanced RISC Machine (ARM) processor and waterproof design, the device is able to float in hot water and monitor the bathing temperature variation over a long period of time. The device was compared alongside a commercial analog bathing thermometer to verify the performance of temperature measurements. In addition, a compensation algorithm was developed and programmed into the device to improve the accuracy of measurements. Processed data is transmitted by Bluetooth to a dedicated Android app for data display and storage. The final results show that the proposed device is highly accurate and stable for monitoring bathing temperature.
Department
Dept. of Anatomy (해부학)
Publisher
School of Medicine (의과대학)
Citation
Qun Wei. (2020). Designing a Smart Bath Assistive Device Based on Measuring Inner Water Temperature for Bathing Temperature Monitoring. Sensors (Basel), 20(8), 2405-. doi: 10.3390/s20082405
Type
Article
DOI
10.3390/s20082405
URI
http://kumel.medlib.dsmc.or.kr/handle/2015.oak/43306
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Anatomy (해부학)
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