Earticle

초록

영어

In this study, based on the most used single board computer, Raspberry Pi, the MEMS-type accelerometer ADXL345 and the iPhone 12 accelerometer were used to measure the acceleration of a single DOF structure, and based on this, the effectiveness of identifying the dynamic characteristics of the accelerometer was verified. Acceleration measurement results were compared with KS48C, an IEPE type accelerometer. As a result of accelerometer measurement, the Raspberry Pi-based ADXL345 and iPhone 12 accelerometer were larger than the KS48C at the initial price, but showed similar results as time passed. The natural frequency measurement result was the same for all accelerometers at 1.419Hz. All damping ratio estimation results were similar. Based on the experimental results, the validity of dynamic characteristic identification of the Raspberry Pi-based MEMS type accelerometer and the iPhone 12 accelerometer was verified.

목차

Abstract
1. 서론
2. 계측 장비
2.1 압전형 가속도계 KS48C
2.2 라즈베리파이 4B (Raspberry Pi 4B)
2.3 MEMS형 가속도계 ADXL345
2.4 iPhone 12
3. 실험 계획
4. 자유진동 계측 결과 비교
4.1 가속도 계측 결과 비교
4.2 고유진동수 추정 결과 비교
4.3 감쇠비 추정 결과 비교
5. 결론
REFERENCES

저자

• 김구연 [ Kim, Gu-Youn | 경북대학교 건설환경에너지공학부 박사과정 ]
• 한종윤 [ Han, Jong-Yun | 경북대학교 건설환경에너지공학부 석사과정 ]
• 김홍진 [ Kim, Hong-Jin | 경북대학교 건축학부 교수, 공학박사 ] Corresponding Author

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