earticle

영어

In this paper, a new tap detection algorithm, which uses adaptive peak tracking, is suggested. A low pass filter is used to track the time varing peaks of tap signals. The obtained peak is used to determine the threshold value for tap detection. Through experimental data analysis, it is found that the threshold value should be around 20% of the peak acceleration. A three axis MEMS accelerometer and a microprocessor is used for the experiments to check the validity of the proposed algorithm. Through experiments, it is demonstrated that the proposed algorithm could detect time varying tap signals very effectively, regardless of the environments or the user variations.