아두이노 기반 MEMS 센서의 동적 계측 성능 연구

Abstract

Prior to applying the Arduino-based acceleration sensor for structural health monitoring of low- and mid-floor structures, we would like to confirm the vibration measurement performance of the Arduino-based low-cost acceleration sensor and clarify its limitations. A commercial acceleration sensor and a low-cost acceleration sensor were installed in the excitation device, and the response was measured by excitation of sin waves of various cases. The response results were compared with the measurement performance of commercial acceleration sensors and low-cost sensors. In the estimation of the excitation frequency, similar results were shown in most cases, but in the case of the magnitude estimation result, when the excitation amplitude is less than 1Hz/100mm, the estimated Magnitude value was inaccurate. In all subsequent cases, the results of the estimation of the magnitude of the low-cost acceleration sensor and the commercial acceleration sensor were similar. Based on these experimental results, it is judged that the Arduino-based low-cost acceleration sensor is generally effective in dynamic measurement of buildings.