A hybridized electromagnetic-triboelectric nanogenerator designed for scavenging biomechanical energy in human balance control  

作　　者：Long Liu Qiongfeng Shi Chengkuo Lee 

机构地区：[1]Department of Electrical and Computer Engineering,National University of Singapore,4 Engineering Drive 3,Singapore,117576,Singapore [2]Center for Intelligent Sensors and MEMS,National University of Singapore,Block E6#05-11,5 Engineering Drive 1,Singapore,117608,Singapore [3]NUS Suzhou Research Institute(NUSRI),Suzhou Industrial Park,Suzhou,215123,China [4]NUS Graduate School-Integrative Sciences and Engineering Programme(ISEP),National University of Singapore,Singapore,119077,Singapore

出　　处：《Nano Research》2021年第11期4227-4235,共9页纳米研究（英文版）

基　　金：This work was partly supported the National Key Research and Development Program of China(No.2019YFB2004800,Project No.R-2020-S-002)at NUSRI,Suzhou,China;Singapore-Poland Joint Grant(R-263-000-C91-305)“Chip-Scale MEMS MicroSpectrometer for Monitoring Harsh Industrial Gases”by Agency for Science,Technology and Research(A*STAR),Singapore and NAWA“Academic International Partnerships of Wroclaw University of Science and Technology”programmed by Polish National Agency for Academic Exchange Programme.

摘　　要：For human beings of different ages and physical abilities, the inherent balance control system is ubiquitous and active to prevent falling, especially in motion states. A hybridized electromagnetic-triboelectric nanogenerator (HETNG) is prepared to harvest biomechanical energy during human balance control processes and achieve significant monitoring functions. The HETNG is composed of a symmetrical pendulum structure and a cylinder magnet rolling inside. Four coils are divided into two groups which form into two electromagnetic generators (EMGs). Besides, two spatial electrodes attached to the inner wall constitute a freestanding mode triboelectric nanogenerator (TENG). With a rectification circuit, the HETNG presents a high output power with a peak value of 0.55 W at a load of 160 Ω. Along with human balance control processes during walking, the HETNG can harvest biomechanical energy at different positions on the trunk. Moreover, the HETNG applied in artificial limb has been preliminarily simulated with the positions on thigh and foot, for monitoring the actions of squat and stand up, and lifting the leg up and down. For the elder that walks slowly with a walking aid, the HETNG equipped on the walking aid can help to record the motions of forwarding and unexpected falling, which is useful for calling for help. This work shows the potential of biomechanical energy-driven HETNG for powering portable electronics and monitoring human motions, also shows significant concerns to people lacked action capability or disabled.

关 键 词：hybridized electromagnetic-triboelectric nanogenerator human balance control internet of things artificial limb 

分 类 号：TB383[一般工业技术—材料科学与工程] TM31[电气工程—电机]