Frequency analysis of fall detection based on Android system

摘要

In order to solve a hot issue about the elderly fall, this paper designs a software algorithm system based on the frequency analysis. This software can judge whether the elderly fall down, so as to take subsequent rescue measures. The paper carries on the analysis from the frequency domain. By using the acceleration sensor to get the information of human body state continuously and with the aid of subsection processing, the software can determine whether the body is in a state of fall. The core of the frequency domain analysis method is to add window to data and use STFT. Because of the particularity of acceleration frequency in the process of the fall, the algorithm can be more accurate to judge whether the elderly fall down.