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Research on a Graded Self-Powered Vibration Sensor for Geological Drilling
1School of Energy and Mining Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China.
Micromachines
|August 28, 2025
Summary
This study presents a self-powered triboelectric nanogenerator vibration sensor for downhole drilling. It accurately measures vibration frequency and amplitude, improving efficiency and safety in geological operations.
Area of Science:
- Materials Science
- Mechanical Engineering
- Geophysics
Background:
- Downhole vibration measurement is crucial for drilling optimization and safety.
- Conventional sensors require external power, hindering efficiency and increasing costs.
Purpose of the Study:
- To develop a self-powered vibration sensor for geological drilling.
- To enable concurrent measurement of vibration frequency and amplitude.
- To enhance operational safety and reduce drilling costs.
Main Methods:
- Utilized a triboelectric nanogenerator (TENG) for self-powering.
- Designed a graded sensor for distinct amplitude threshold detection.
- Conducted experiments to validate performance under various conditions.
Main Results:
- The sensor measures vibration frequency from 0-11 Hz and amplitude thresholds of 10-55 mm.
- Achieved measurement errors below 3% for both frequency and amplitude.
- Demonstrated stable operation up to 150 °C and 90% humidity.
- Exhibited self-powering capability with a maximum output voltage of 11.8 V.
Conclusions:
- The TENG-based sensor offers a self-powered, integrated solution for downhole vibration monitoring.
- This technology enhances drilling efficiency and operational safety.
- The sensor's design is suitable for demanding real-world drilling environments.
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