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A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
Published on: September 30, 2019
Development of a wireless displacement measurement system using acceleration responses
Jong-Woong Park1, Sung-Han Sim, Hyung-Jo Jung
1Department of Civil and Environmental Engineering, KAIST, Daejeon, Korea. jwp@kaist.ac.kr
Sensors (Basel, Switzerland)
|July 25, 2013
Summary
This study introduces a low-cost wireless system for measuring structural displacement using acceleration data. The developed smart sensors and filtering algorithm effectively overcome limitations of traditional methods for large structures.
Area of Science:
- Civil Engineering
- Structural Health Monitoring
- Sensor Technology
Background:
- Traditional displacement measurement methods are expensive and difficult to implement on large structures.
- Existing acceleration-based methods face challenges with cabling and data transmission in full-scale applications.
Purpose of the Study:
- To develop a cost-effective wireless displacement measurement system using acceleration data.
- To address the limitations of wired sensor networks in monitoring large civil structures.
Main Methods:
- Proposed a wireless system with smart sensors capable of on-board computation.
- Implemented a Finite Impulse Response (FIR) filter-based algorithm to estimate displacement from acceleration.
- Conducted laboratory tests on a shaking table and a three-story shear building model.
Main Results:
- The wireless system demonstrated accurate displacement estimation.
- The FIR filter effectively removed low-frequency drifts from integrated acceleration signals.
- Experimental validation confirmed the system's effectiveness and feasibility for structural monitoring.
Conclusions:
- The proposed low-cost wireless displacement measurement system offers a viable alternative for structural health monitoring.
- Smart sensors and advanced algorithms enable efficient data acquisition and processing for large-scale structures.
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