Selection of Piezoelectric Material based Pressure Sensor for the Application of Wrist Pulse Acquisition System

This paper focuses on the selection of an optimum piezoelectric material for use in a piezoelectric-pressure sensor that finds application in wrist pulse acquisition systems. The selection of material is made using one of the widely used MCDM (multi criteria decision making) techniques namely, TOPSIS. The piezoelectric material properties, like, young’s modulus, relative permittivity, piezoelectric coefficient, electromechanical coupling, have been considered for enhancing the sensor output for a given pressure. Properties of piezoelectric coefficient and electromechanical coupling coefficient have been given more weightage to achieve better sensor sensitivity.