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Towards HMM based human motion recognition using MEMS inertial sensors

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5 Author(s)
Guangyi Shi ; Advanced Digital Signal Processing Lab Shenzhen Graduate School of Peking University, China ; Yuexian Zou ; Yufeng Jin ; Xiaole Cui
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This paper presents a new method of human motion recognition based on MEMS inertial sensors data. A micro inertial measurement unit (muIMU) that is 56 mm*23 mm*15 mm in size was built. This unit consists of three dimensional MEMS accelerometers, gyroscopes, a bluetooth module and a MCU (micro controller unit), which can record and transfer inertial data to a computer through serial port wirelessly. Five categories of human motion were done including walking, running, going upstairs, fall and standing. Fourier analysis was used to extract the feature from the human motion data. The concentrated information was finally used to categorize the human motions through HMM (hidden Markov model) process. Experimental results show that for the given 5 human motions, correct recognition rate range from 90% -100%. Also, a full combination of 6 parameters (Gx, Gy, Gz, Ax, Ay, Az) was listed and the recognition rate of each combination (total 63) was tested.

Published in:

Robotics and Biomimetics, 2008. ROBIO 2008. IEEE International Conference on

Date of Conference:

22-25 Feb. 2009