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可穿戴生理信息监测的自供电系统研究

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设计与制作了一种应用于可穿戴生理信息监测的自供电系统,利用压电-光电复合能量收集装置采集人体运动时足底的机械能和室内光能.复合能量收集装置以运动鞋为载体,设计了多种结构压电能量收集器固定在鞋底,光电能量收集器粘接在鞋面,收集到的能量存储在超级电容中,同时设计了一套能够定时、按需供电的能量管理控制电路,控制生理信息监测系统每隔20 min上电一次,并且测量结束即刻断电.经测试,光电能量收集装置在室内从早上7点至晚上7点的平均输出功率达到590 μW,压电能量收集装置在1.2 m/s的匀速步行状态驱动下的平均输出功率达540 μW以上,复合能量输出功率能够稳定在 1.124 mW以上,即20 min产电1.349 J.对系统各单元进行数据采集测试以及功耗测试,得出系统一个工作周期耗能1.04 J.从能量收支平衡来看,利用运动机械能与光能复合供电的生理信息采集系统可实现自我维持定时工作,具有一定的应用参考价值.
Research on Self-Powered System for Wearable Physiological Information Monitoring
A self-powered system for wearable physiological information monitoring is designed and fabricated.The piezoelectric-photoelec-tric composite energy harvesting device is used to collect the mechanical energy and indoor light energy of the sole of the human body dur-ing movement.Sports shoes are used as the carrier for the composite energy harvesting device,a variety of structural piezoelectric energy harvesters are designed to be fixed on the soles,photoelectric energy harvesters are bonded to the uppers,and the collected energy is stored in supercapacitors.The energy management control circuit with timed and on-demand power supply controls the physiological information monitoring system to be powered on every 20 minutes,and the power is turned off immediately after the measurement.After testing,the av-erage output power of the photovoltaic energy harvesting device in the room from 7:00 am to 7:00 pm reaches 590 μW,and the average output power of the piezoelectric energy harvesting device under the constant speed of walking at 1.2 m/s is over 540 μW.The output power can be stabilized above 1.124 mW,that is,1.349 J of electricity can be produced in 20 minutes.The data acquisition test and power consumption test of each unit of the system are carried out,and it is concluded that the system consumes 1.04 J of energy in one working cycle.From the perspective of energy balance,the physiological information acquisition system using the combined power supply of motion mechanical energy and light energy can achieve self-sustaining timing.It has certain application reference value.

wearable physiological information monitoringself-powered systemcomposite energy harvestingenergy management control circuit

李敏、李玲、张加宏、高翔、刘清惓、王立

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南京信息工程大学,江苏省大气环境与装备技术协同创新中心,江苏 南京 210044

南京信息工程大学电子与信息工程学院,江苏 南京 210044

可穿戴生理信息监测 自供电系统 复合能量收集 能量管理控制电路

国家自然科学基金项目江苏高校品牌专业建设工程二期项目(电子信息工程)江苏高校优势学科Ⅲ期建设工程项目(PAPD)江苏省高等学校大学生实践创新训练计划项目

41875035202110300007Z

2024

10.3969/j.issn.1004-1699.2024.01.021

传感技术学报
东南大学 中国微米纳米技术学会

传感技术学报

CSTPCD北大核心
影响因子：1.276
ISSN：1004-1699
年,卷(期)：2024.37(1)
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