Liang Qijie, Yan Xiaoqin, Liao Xinqin, Cao Shiyao, Lu Shengnan, Zheng Xin, Zhang Yue
State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of science and technology Beijing, Beijing, 100083, China.
Key Laboratory of New Energy Materials and Technologies, University of Science and Technology Beijing, Beijing, 100083, China.
Sci Rep. 2015 Nov 5;5:16063. doi: 10.1038/srep16063.
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.
我们报道了一种基于传感器与被检测物体之间的接触起电，用于振动监测的自供电、轻量级且经济高效的有源传感器系统，该系统具有多路复用操作功能。所制备的传感器矩阵能够监测和映射大量单元的振动状态。监测内容包括：每个单元的开关状态、振动频率和振动幅度。该有源传感器系统的检测范围为0-60Hz，具有高精度（相对误差低于0.42%）、长期稳定性（10000次循环）。在时间维度上，传感器可以通过在较长时间内记录传感器系统的输出，提供振动过程记忆。此外，所开发的传感器系统可以在接触模式和非接触模式下实现检测。其高性能对被检测物体的形状或导电性不敏感。具有这些特性，该有源传感器系统在自动控制、远程操作、监视和安全系统中具有巨大潜力。
