Self-powered flexible wearable wireless sensing for outdoor work heatstroke prevention and health monitoring

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL Chemical Engineering Journal Pub Date : 2024-10-05 DOI:10.1016/j.cej.2024.156431

Xujun Chen, Zhengzhong Wan, Ruihua Zhang, Longgang Ma, Zhencan Yang, Xinqing Xiao

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Abstract

Outdoor workers are susceptible to heatstroke in hot weather. Currently, there are no wearable devices on the market to assess the risk of heatstroke. This paper proposes a self-powered flexible wearable wireless sensing system for outdoor work heatstroke prevention and health monitoring (SWSM). SWSM consists of two parts, one part is a wearable heatstroke prevention patch based on flexible wireless sensing (WPFS) to monitor the wearer’s physiological indicators continuously. The other part is a self-powered device based on solar energy (SPDS), which can generate milliamp level current for powering the WPFS. With these indicators, the wearer’s activity category is confirmed by the multi-layer perceptron (MLP) model. WPFS contains a PVDF-HFD nanofibre cooling film (PNCF), flexible triboelectric nanogenerator (TENG)-based button (B-TENG), and functional sensing components. Temperatures under PNCF coverage can be up to 12% lower than environmental temperatures. B-TENG is used to adjust the mode. Based on the wearer’s physiological indicators a heatstroke risk assessment equation can be created to assess the potential risk of heatstroke. Finally, the data is displayed on the Internet of Things (IoT) platform. The system is wireless, self-powered, flexible wearable, and can be used for real-time prevention of heatstroke risk and health monitoring of outdoor workers.

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用于户外工作防暑和健康监测的自供电柔性可穿戴无线传感装置

户外工作者在高温天气下很容易中暑。目前，市场上还没有评估中暑风险的可穿戴设备。本文提出了一种自供电的柔性可穿戴无线传感系统（SWSM），用于户外工作的中暑预防和健康监测。SWSM 由两部分组成，一部分是基于柔性无线传感（WPFS）的可穿戴防中暑贴片，用于持续监测佩戴者的生理指标。另一部分是基于太阳能的自供电装置（SPDS），可产生毫安级电流为 WPFS 供电。通过这些指标，多层感知器（MLP）模型可以确认佩戴者的活动类别。WPFS 包含 PVDF-HFD 纳米纤维冷却薄膜（PNCF）、基于柔性三电纳米发电机（TENG）的按钮（B-TENG）和功能传感元件。PNCF 覆盖下的温度可比环境温度低 12%。B-TENG 用于调整模式。根据佩戴者的生理指标，可以建立中暑风险评估方程，以评估潜在的中暑风险。最后，数据会显示在物联网（IoT）平台上。该系统无线、自供电、可灵活佩戴，可用于实时预防中暑风险和户外工作者的健康监测。

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.