A Low-Cost Vibration Measurement Using MEMS MPU9250 Accelerometer with DLPF Filtering

Nowadays, the integration of MEMS accelerometer in vibration measurement system such as a condition-based monitoring (CBM) become necessary as it is tiny, low in weight, power consumption and cost. The MPU9250 is one of the cheapest accelerometers that capable to measure large movements and low frequencies. It also has lower noise level and consumes less energy compared to MPU6050. The DLPF enables MPU9250 to be configure by selecting the suitable noise filtration. In this study, an experiment is conducted to validate the MPU9250 accelerometer measurement with the embedded MEMS accelerometer of smart mobile device. The vibration at the end of motorcycle’s handlebar is measured and the result shows that the used DLPF filtering enable the MPU9250 to achieve an equal result as embedded MEMS accelerometer of smart mobile device.