Research on a Self-Powered Vibration Sensor for Coal Mine In Situ Stress Fracturing Drilling
Jiangbin Liu, Mingzhong Li, Chuan Wu, Xianhong Shen, Yanjun Feng
TL;DR
This paper introduces a self-powered vibration sensor for coal mine drilling that improves efficiency and safety by generating its own energy and reliably measuring vibrations.
Contribution
The novel self-powered sensor combines triboelectric nanogenerator technology with high reliability for coal mine drilling environments.
Findings
The sensor operates across 0 to 11 Hz with less than 4% error in frequency and amplitude.
It functions reliably in temperatures under 150 °C and humidity under 90%.
The device generates up to 68 V voltage and 3.8 × 10−7 W power when connected to a 6 × 107 Ω load.
Abstract
In the process of in situ stress fracturing drilling in coal mines, obtaining downhole vibration data not only improves drilling efficiency but also plays a key role in ensuring operational safety. Nevertheless, the energy supply techniques used in current vibration detectors reduce operational performance and escalate excavation expenses. This research proposes a self-powered vibration sensor based on the triboelectric nanogenerator, designed for the operational environment of coal mine in situ stress fracturing drilling. It can simultaneously detect axial and lateral vibration frequencies, and the inclusion of redundant sensing units provides the sensor with high reliability. Experimental outcomes demonstrate that the device functions across a frequency span of 0 to 11 Hz, maintaining error margins for frequency and amplitude under 4%. Furthermore, it functions reliably in…
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Taxonomy
TopicsAdvanced Sensor and Energy Harvesting Materials · Nonlocal and gradient elasticity in micro/nano structures · Advanced Fiber Optic Sensors