Title :
Study on measurement free fall posture and height of a mobile device using MEMS sensors
Author :
Gugyong Kim ; Jongguk Choe
Author_Institution :
Dong-Eui Inst. of Technol., Busan, South Korea
Abstract :
The mobile device may cause damage such as circuitry, panel, glass, case by the impact caused by free fall in the user environment. The manufacturers have a tumble and drop test in order to verify the impact safety of the mobile device. In this study, the built-in mobile device magnetometer, gyroscope, accelerometer information developed by utilizing an algorithm to measure the height and the posture at the time of drop impact occurs in the tests and user environment. Falling posture measurement algorithm was validated through a high-speed camera and measured sensor data processing results compared. Drop height measurement algorithm was validated at a constant height drop tests at 50 to 130 cm.
Keywords :
accelerometers; cameras; gyroscopes; magnetometers; mechanical testing; micromechanical devices; mobile handsets; product quality; safety; MEMS sensor; built-in mobile device accelerometer information; built-in mobile device gyroscope information; built-in mobile device magnetometer information; drop test; high-speed camera; measured sensor data processing; mobile device drop height measurement; mobile device free fall posture measurement; mobile device safety; size 50 cm to 130 cm; tumble test; user environment; Accelerometers; Gyroscopes; Magnetic recording; Magnetic sensors; Magnetometers; Smart phones;
Conference_Titel :
Advanced Intelligent Mechatronics (AIM), 2015 IEEE International Conference on
DOI :
10.1109/AIM.2015.7222735
