구조물 변위계측을 위한 GNSS-IMU 센서융합모듈의 구성 및 성능시험

• 영문명: Configuration and Performance Test of GNSS-IMU Sensor Fusion Module for Structural Displacement Measurement
• 발행기관: 한국연안방재학회
• 저자명: 민인기(In-Ki Min) 전인식(Insik Chun) 심재설(Jaeseol Shim) 하동호(Dong-Ho Ha)
• 간행물 정보: 『한국연안방재학회지』제9권 제4호, 237~245쪽, 전체 9쪽
• 주제분류: 사회과학 > 사회과학일반
• 파일형태: PDF
• 발행일자: 2022.10.31

영문 초록

Detecting the displacement of a structure by external forces in advance is very important in monitoring the health of the structure. In this study, a kind of sensor fusion technique that combines low-cost GNSS and IMU for structural displacement measurement was established. In addition, a data acquisition program that can secure the synchronous measurement between sensors was created. In order to evaluate the performance of this measurement module, a model experiment gauging the true value by the laser displacement meter was performed, and the results of GNSS single positioning, VRS positioning, precision single positioning (PPP), and sensor merging positioning were compared and analyzed. As a result, it was found that the PPP positioning did not capture the vibration of the structure at all regardless of the waiting time within the excitation condition of the model structure. On the other hand, GNSS single positioning was able to obtain similar results to true values and VRS positioning by pre-processing with an appropriate high-pass filter and the sensor fusion technique.

목차

1. 서 론

2. 센서융합모듈의 구성

3. 센서융합 모듈의 성능실험

4. 결과 및 분석

5. PPP 측위의 특성 검토

6. 결론 및 제안

감사의 글

References

키워드

GNSS IMU Sensor fusion Structural health monitoring Acceleration and displacement