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

机译：基于内部水温测量的智能洗浴辅助装置设计用于洗浴温度监测

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摘要

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.
机译：今天，洗澡不仅是保持清洁的一种手段，而且还可以减轻疲劳和压力。但是，长时间用热水洗澡也很危险，可能导致烫伤甚至心脏病发作。为了防止这些风险，已经进行了一些基于测量生物信号的研究，但是由于价格高，使用困难和功能受限，这些研究的建议难以为公众所接受。因此，开发准确的测量沐浴温度和沐浴时间的方法应该是解决这些问题的最直接方法。在这项研究中，提出了一种基于内部水温测量功能的智能洗浴辅助设备。在开发该设备之前，对沐浴环境进行了仿真，将六个温度传感器固定在不同的深度，以找到用于测量沐浴温度的最佳深度。根据测量结果，该设备设计为蘑菇形，其盖部漂浮在水面上并容纳电子元件，并且将阀杆部内的温度传感器浸入水面以下约5 cm处以测量内部水温。由于低功耗的高级RISC机器（ARM）处理器和防水设计，该设备能够长时间漂浮在热水中并监视沐浴温度的变化。将该设备与商用模拟沐浴温度计进行了比较，以验证温度测量的性能。此外，还开发了补偿算法并将其编程到设备中，以提高测量的准确性。蓝牙将处理后的数据传输到专用的Android应用，以进行数据显示和存储。最终结果表明，所提出的装置对于监测沐浴温度是高度准确且稳定的。

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