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2024 Vol.40, Issue 6 Preview Page
Development of a Low-Cost Arduino-Based System for Wall Inclination Measurement System Based Using Internal Inertial Measurement Unit Sensor

아두이노 보드와 내장 IMU 센서를 활용한 벽체 기울기 계측 시스템

Seok Hwang1
,
Jaehun Ahn2*
,
Nguyen Huyen Tram3
황 석1
,
안 재훈2*
,
응우옌 후엔 트람3
1Member, Graduate Student, Dept. of Civil and Environment Engrg., Pusan National Univ.
2Member, Prof., Dept. of Civil and Environment Engrg., Pusan National Univ.
3Graduate Student, Dept. of Civil and Environment Engrg., Pusan National Univ.
1정회원, 부산대학교 사회환경시스템공학과 석사과정
2정회원, 부산대학교 사회환경시스템공학과 정교수
3비회원, 부산대학교 사회환경시스템공학과 박사과정
*Corresponding Author
31 December 2024. pp. 161-169
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Abstract

In this study, a low-cost, Arduino-based inclination measurement system was developed to reduce the acquisition and maintenance costs associated with conventional wall inclination monitoring devices. The developed system utilizes an embedded inertial measurement unit (IMU) sensor for data acquisition and employs various filtering techniques, including the moving average, exponentially weighted moving average, complementary, and Kalman filters, to minimize noise and error. Achieving the required precision with a single filter proved challenging; however, combining multiple filtering methods considerably enhanced the accuracy. The validation results demonstrated that the selected Arduino board, embedded IMU sensor, and integrated filtering system can accurately measure wall inclination or horizontal displacement. This study demonstrates the feasibility of implementing low-cost, open-source hardware-based measurement systems in practical field applications.

Keywords
Arduino
IMU Sensor
Open-source hardware
Retaining wall
Wall inclination

본 연구에서는 벽체 기울기 계측 기기의 도입 및 유지 비용을 저감할 수 있는 대안으로, 아두이노 기반의 저비용 기울기 측정 시스템을 개발하였다. 본 시스템은 내장된 IMU 센서를 통해 데이터를 측정하며, 노이즈와 오차를 줄이기 위해 이동평균, EWMA, 상보필터, 칼만필터를 적용하였다. 단일 필터만으로는 요구되는 수준의 정밀도를 확보하기 어려웠으나, 다중 필터링 조합을 통해 정밀도를 유의미하게 향상할 수 있었다. 정확도 검증 결과, 선정된 아두이노 보드 및 내장 IMU 센서, 또한 제한된 필터링 시스템의 조합으로부터, 벽체의 기울기 혹은 수평 변위를 높은 정확도로 계측할 수 있음을 입증하였다. 이를 통해 저비용 오픈소스 하드웨어 기반 계측 기기의 실무 현장 적용 가능성을 확인하였다.

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Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 40
  • No :6
  • Pages :161-169
  • Received Date : 2024-12-18
  • Revised Date : 2024-12-19
  • Accepted Date : 2024-12-19
  • DOI :https://doi.org/10.7843/kgs.2024.40.6.161
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