Fig. 1

Modular framework of the proposed method for AF detection by means of BCG signal. First, the AF and NAF signals were split into the 1-s-segment dataset and the 24-s-segment dataset, respectively. Second, the 1-D morphology feature extracted from Bi-LSTM and the 2-D rhythms feature extracted from PSR were integrated by CNN. Ultimately, the attention mechanism was involved to improve the performance of the AF classification