Fig. 2: The parameterized simulation results of the heart sound sensing structure.
From: A novel wearable device integrating ECG and PCG for cardiac health monitoring
a Heart sound sensor structure diagram. b Cross-sectional view of the heart sound sensor and the symbolic representation of the parameters of its structures. c Influence of PZT structure parameters on the output voltage. d Influence of PZT structure parameters on the characteristic frequency. e Influence of copper substrate structure parameters on the output voltage. f Influence of copper substrate structure parameters on the characteristic frequency. g Influence of contact structure parameters on the output voltage. h Influence of contact structure parameters on the characteristic frequency. i Influence of cavity structure parameters on the output voltage. j Influence of cavity structure parameters on the characteristic frequency
