Department of Optoelectronic Engineering, Chongqing University , Chongqing 400044, China.
School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
ACS Nano. 2017 Sep 26;11(9):8830-8837. doi: 10.1021/acsnano.7b02975. Epub 2017 Aug 17.
Heart-rate monitoring plays a critical role in personal healthcare management. A low-cost, noninvasive, and user-friendly heart-rate monitoring system is highly desirable. Here, a self-powered wireless body sensor network (BSN) system is developed for heart-rate monitoring via integration of a downy-structure-based triboelectric nanogenerator (D-TENG), a power management circuit, a heart-rate sensor, a signal processing unit, and Bluetooth module for wireless data transmission. By converting the inertia energy of human walking into electric power, a maximum power of 2.28 mW with total conversion efficiency of 57.9% was delivered at low operation frequency, which is capable of immediately and sustainably driving the highly integrated BSN system. The acquired heart-rate signal by the sensor would be processed in the signal process circuit, sent to an external device via the Bluetooth module, and displayed on a personal cell phone in a real-time manner. Moreover, by combining a TENG-based generator and a TENG-based sensor, an all-TENG-based wireless BSN system was developed, realizing continuous and self-powered heart-rate monitoring. This work presents a potential method for personal heart-rate monitoring, featured as being self-powered, cost-effective, noninvasive, and user-friendly.
心率监测在个人医疗保健管理中起着至关重要的作用。人们非常希望有一种低成本、非侵入性且用户友好的心率监测系统。在这里，通过整合基于绒毛结构的摩擦纳米发电机（D-TENG）、电源管理电路、心率传感器、信号处理单元以及用于无线数据传输的蓝牙模块，开发出自供电无线体传感器网络（BSN）系统，用于心率监测。通过将人体行走的惯性能量转换为电能，在低工作频率下可提供 2.28 mW 的最大功率和 57.9%的总转换效率，可立即且可持续地驱动高度集成的 BSN 系统。传感器获取的心率信号将在信号处理电路中进行处理，通过蓝牙模块发送到外部设备，并在个人手机上实时显示。此外，通过结合基于 TENG 的发电机和基于 TENG 的传感器，开发出了全 TENG 无线 BSN 系统，实现了连续和自供电的心率监测。这项工作为个人心率监测提供了一种潜在的方法，其特点是自供电、经济高效、非侵入性和用户友好。
