journal article·2021-12-29

An Integrated Self-Powered Real-Time Pedometer System with Ultrafast Response and High Accuracy

Xiaoping Chen, Junyan Li, Yina Liu, Jinxing Jiang, Chun Zhao, Cezhou Zhao, Eng Gee Lim, Xuhui Sun, Zhen Wen

ACS Applied Materials & Interfaces· Volume 13· Issue 51
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Abstract

As accurate step counting is a critical indicator for exercise evaluation in daily life, pedometers give a quantitative prediction of steps and analyze the amount of exercise to regulate the exercise plan. However, the merchandized pedometers still suffer from limited battery life and low accuracy. In this work, an integrated self-powered real-time pedometer system has been demonstrated. The highly integrated system contains a porous triboelectric nanogenerator (P-TENG), a data acquisition and processing (DAQP) module, and a mobile phone APP. The P-TENG works as a pressure sensor that generates electrical signals synchronized with users' footsteps, and combining it with the analogue front-end (AFE) circuit yields an ultrafast response time of 8 ms. Moreover, the combination of a mini press-to-spin-type electromagnetic generator (EMG) and a supercapacitor enables a self-powered and self-sustained operation of the entire pedometer system. This work implements the regulation of TENG signals by electronic circuit design and proposes a highly integrated system. The improved reliability and practicality provide more possibilities for wearable self-powered electronic devices.
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Research context

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Conducting polymers and applications · Tactile and Sensory Interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, China

Department of Applied Mathematics, School of Science, Xi’an Jiaotong-Liverpool University, Suzhou 215123, China

Department of Electrical and Electronic Engineering, School of Advanced Technology, Xi’an Jiaotong-Liverpool University, Suzhou 215123, China

Funding

Collaborative Innovation Center of Suzhou Nano Science and Technology · China Postdoctoral Science Foundation · National Natural Science Foundation of China · Higher Education Discipline Innovation Project · Suzhou Science and Technology Development Planning Project: Key Industrial Technology Innovation · Joint International Research Laboratory of Carbon-Based Functional Materials and Devices · Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University · Xi'an Jiaotong-Liverpool University

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