Research on the Bouncing-Ball Based Triboelectric Nanogenerator for Self-powered Vibration Frequency Monitoring**Research supported by National Science Foundation of China (Grant Nos. 51879022, 51979045), the Fundamental Research Funds for the Central Universities, China (Grants Nos. 3132019330)

2021 ◽  
Author(s):  
Xusheng Zuo ◽  
Taili Du ◽  
Fangyang Dong ◽  
Shunqi Li ◽  
Yongjiu Zou ◽  
...  
Keyword(s):  
Vibration Frequency ◽  
National Science Foundation ◽  
Triboelectric Nanogenerator ◽  
Bouncing Ball ◽  
National Science ◽  
Frequency Monitoring ◽  
Fundamental Research ◽  
Self Powered

scholarly journals A Self-Powered and Highly Accurate Vibration Sensor Based on Bouncing-Ball Triboelectric Nanogenerator for Intelligent Ship Machinery Monitoring

Micromachines ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 218
Author(s):  
Taili Du ◽  
Xusheng Zuo ◽  
Fangyang Dong ◽  
Shunqi Li ◽  
Anaeli Elibariki Mtui ◽  
...  
Keyword(s):  
Signal To Noise Ratio ◽  
Work Conditions ◽  
Copper Electrode ◽  
Vibration Sensor ◽  
High Signal ◽  
Triboelectric Nanogenerator ◽  
Vibration Exciter ◽  
Bouncing Ball ◽  
3D Printed ◽  
Self Powered

With the development of intelligent ship, types of advanced sensors are in great demand for monitoring the work conditions of ship machinery. In the present work, a self-powered and highly accurate vibration sensor based on bouncing-ball triboelectric nanogenerator (BB-TENG) is proposed and investigated. The BB-TENG sensor consists of two copper electrode layers and one 3D-printed frame filled with polytetrafluoroethylene (PTFE) balls. When the sensor is installed on a vibration exciter, the PTFE balls will continuously bounce between the two electrodes, generating a periodically fluctuating electrical signals whose frequency can be easily measured through fast Fourier transform. Experiments have demonstrated that the BB-TENG sensor has a high signal-to-noise ratio of 34.5 dB with mean error less than 0.05% at the vibration frequency of 10 Hz to 50 Hz which covers the most vibration range of the machinery on ship. In addition, the BB-TENG can power 30 LEDs and a temperature sensor by converting vibration energy into electricity. Therefore, the BB-TENG sensor can be utilized as a self-powered and highly accurate vibration sensor for condition monitoring of intelligent ship machinery.

Research on the self-powered downhole vibration sensor based on triboelectric nanogenerator

2021 ◽  
pp. 095440622110130
Author(s):  
Wu Chuan ◽  
Huang He ◽  
Yang Shuo ◽  
Fan Chenxing
Keyword(s):  
Vibration Frequency ◽  
Performance Test ◽  
Drill String ◽  
Vibration Sensor ◽  
Triboelectric Nanogenerator ◽  
Test Results ◽  
Output Current ◽  
Maximum Value ◽  
In Series ◽  
Self Powered

Drill string vibration during the drilling must be measured in real-time as it will cause damage to the construction. This paper proposed a self-powered downhole vibration sensor based on the triboelectric nanogenerator. The downhole vibration sensor relies on the drill string vibration to induce triboelectric charge and electrostatic induction of nanomaterials, thereby realizing self-powered vibration measurement. Sensing performance test results show that the measurement range is between 0 to 5 Hz, the measurement error does not exceed 3.5%, and the output voltage amplitude with a range of 2 V to 5.5 V decreases with the increases of vibration frequency. Self-powered performance test results show that the output current can reach a maximum value of about 35 × E−8 A when a 50 ohm resistance is connected in series, the output power can reach a maximum value of about 924.5 × E−12 W when a 20k ohm resistance is connected in series at a vibration frequency of 0.8 Hz, and the output current and power all decrease with the increase of the vibration frequency.

scholarly journals University in the 21st Century

2007 ◽  
Vol 06 (02) ◽  
pp. E ◽  
Author(s):  
Pietro Greco
Keyword(s):  
United States ◽  
House Of Representatives ◽  
National Science Foundation ◽  
Government Agency ◽  
United States Government ◽  
The Us ◽  
States Government ◽  
National Science ◽  
Fundamental Research ◽  
Research And Education

The Scientific Communications Act of 2007 (HR 1453) was introduced by the US House of Representatives on 9th March. The National Science Foundation, an independent United States Government agency that supports fundamental research and education, has thus been allowed to spend ten million dollars for each of the fiscal years 2008 through 2012 to provide communications training to improve the ability of scientists to engage in public dialogue.

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