I've found several iPhone accelerometer and Android accelerometer apps (for example http://www.iseismometer.com and http://www.now-instruments.com/products/3-vibsensor ). Are these useful for doing quantitative vibration analysis in the lab, and if not, what are their deficiencies?
In one case I used a smartphone accelerometer to characterize the vibration level of a translational stage as a function of stage velocity. I did find resonances, so perhaps it's a modal analysis. I'm not sure that MEMS accelerometers are useful for shock testing - they might not function above a certain level.
Dear Miles,
in general terms it depends from frequency and amplitude ranges you investigate. At this time, unfortunately, linearity in frequency and amplitude of this kind of accelerometers is too limited, if compared to e.g. piezoelectric accelerometer, as a consequence measurements can be very inaccurate.
Dear Miles,
I would say, that it depends on the built-in sensors and the configurability of the sensors with regard to the settings provided by the specific smartphone OS (Android, iOS, etc.). In general MEMS Accelerometers are suitable for such tasks, since you can find MEMS accelerometers for lower force ranges (+-2g) or higher force ranges (+-16g). Smartphones such as the Moto X 2nd generation provide MEMS accelerometer with a force range up to +-16g. Furthermore, we conducted research which shows that even very small movements can be detected precisely by MEMS accelerometers. A general guideline on important aspects for sensing with MEMS accelerometers is given in our paper on "sensor requirements for activity recognition on smart watches".
Kind Regards,
Marian
Conference Paper Sensor requirements for activity recognition on smart watches
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FYI http://blog.wolfram.com/2017/04/07/how-to-use-your-smartphone-for-vibration-analysis-part-2-the-wolfram-cloud/
I think YES, you can. Especially the latest versions of cell phones has very precision sensors. For example, Samsung S5 has MP65 gyro sensor, that enables to measure the vibration very accurately. You can use idynamics application to see your phones vibration sensor specification. (idynamics application has created by TU Kaiserslautern team.)
In addition to that you can measure the vibration by idynamics. it's a new kind vibrometer for android phones.
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