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Three-Dimensional Measuring Device and Method of Underground Displacement Based on Double Mutual Inductance Voltage
Nanying Shentu1, Feng Wang1, Qing Li1
1College of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, China.
Sensors (Basel, Switzerland)
|March 10, 2022
Summary
A new 3D underground displacement monitoring technology uses a double mutual inductance voltage contour method for landslides. This system achieves remote, real-time landslide monitoring with high accuracy, improving risk assessment and prevention.
Area of Science:
- Geosciences
- Geotechnical Engineering
- Sensor Technology
Background:
- Landslides pose significant risks, necessitating accurate displacement monitoring for effective risk assessment and engineering prevention.
- Existing landslide displacement monitoring technologies have limitations that hinder comprehensive risk management.
Purpose of the Study:
- To propose and validate a novel three-dimensional underground displacement monitoring technology for landslides.
- To address the shortcomings of current monitoring methods by introducing a new sensor-based approach.
Main Methods:
- Development of a three-dimensional underground displacement monitoring device utilizing a double mutual inductance voltage contour method.
- Establishment of a measurement model converting mutual inductance voltages and inter-axis angles to relative displacement.
- Integration with an information processing unit, RS-485 communication, and an IoT cloud platform via a 4G module for remote, real-time data transmission.
Main Results:
- The developed measurement model accurately calculates relative displacement between sensing units, enabling total displacement monitoring from underground to surface.
- Experimental validation on a simulated landslide platform demonstrated high accuracy, with a maximum error not exceeding 1 mm within a 0-50 mm displacement range.
- The system successfully realizes remote, real-time three-dimensional monitoring of rock and soil mass displacement.
Conclusions:
- The proposed double mutual inductance voltage contour method offers a viable solution for accurate three-dimensional underground landslide displacement monitoring.
- The system's accuracy meets the stringent requirements for landslide monitoring, enhancing safety and engineering applications.
- Real-time data transmission to an IoT platform facilitates proactive landslide risk management and timely intervention.
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