Artificial Neural Networks (ANN)-based Seismic Signal Source Identification from MEMS Accelerometer Measurements

This paper reports initial findings on Artificial Neural Networks (ANN)-based methods to identify seismic signal source using only low-quality MEMS accelerometer signals. We collected annotated signals sampled at 50 Hz from several mobile devices and built an open source linear acceleration dataset. From this dataset, we performed and compared several feature extraction techniques based on signal length and spectrogram parameters. We trained the resulting features using three-layer neural networks with a hidden layer of 32 neurons and a dropout layer. Training was performed using Tensorflow 2.0 and Google Colaboratory with GPU backend. The results show 95.83% validation accuracy from spectrogram signals with length of 2 seconds and 3 seconds, and 79.17% validation accuracy from raw amplitude inputs.