Graphene based flexible piezoresistive pressure sensor for electric vehicles applications

Abstract

Demand of MEMS sensor is increasing due to its applicability in various fields such as in automobile and industrial applications. Save driving is very necessary which can be properly accomplish by usage of flexible MEMS devices which can monitor different parameters such as tyre pressure, speed etc. Tyre pressure monitoring system consists of flexible MEMS pressure sensor, which provide low power consumption and temperature compatibility by proper selection of the sensor material. In this paper, modelling of graphene based flexible piezoresistive pressure sensor has been carried out for monitoring of the tyre pressure. Graphene is used as a substrate material, which makes the flexible device that can be implanted easily in the tyre. Graphene is also used as the sensing material for piezoresistors. Results indicate that sensitivity of 0.63mV/kPa is achieved at room temperature.