Integrated active sensor system for real time vibration monitoring.

Qijie Liang,Yue Zhang,Xinqin Liao,Shiyao Cao,Shengnan Lu,Xiaoqin Yan,Xin Zheng

doi:10.1038/srep16063

Qijie Liang, Yue Zhang + Show 5 more

Open Access

https://doi.org/10.1038/srep16063

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Abstract

We report a self-powered, lightweight and cost-effective active sensor system for vibration monitoring with multiplexed operation based on contact electrification between sensor and detected objects. The as-fabricated sensor matrix is capable of monitoring and mapping the vibration state of large amounts of units. The monitoring contents include: on-off state, vibration frequency and vibration amplitude of each unit. The active sensor system delivers a detection range of 0–60 Hz, high accuracy (relative error below 0.42%), long-term stability (10000 cycles). On the time dimension, the sensor can provide the vibration process memory by recording the outputs of the sensor system in an extend period of time. Besides, the developed sensor system can realize detection under contact mode and non-contact mode. Its high performance is not sensitive to the shape or the conductivity of the detected object. With these features, the active sensor system has great potential in automatic control, remote operation, surveillance and security systems.

Highlights

We report a self-powered, lightweight and cost-effective active sensor system for vibration monitoring with multiplexed operation based on contact electrification between sensor and detected objects
The microstructure is obtained by applying a steel-wire screen onto the PTFE film with controlled pressure and the detailed fabrication process is presented in the experimental section
The active array sensor can be flexible by replacing the acrylic substrate by transparent polyethylene terephthalate (PET) substrate

Summary

Introduction

We report a self-powered, lightweight and cost-effective active sensor system for vibration monitoring with multiplexed operation based on contact electrification between sensor and detected objects. Each pixel in the active sensor array can itself generate electric signals as a response to the vibration of every detected unit, which is the basic principle of the designed device acting as a self-powered vibration sensor.

Results

Conclusion