Virtual prototyping of a MEMS capacitive pressure sensor for TPMS using Intellisuite®

Abstract

Tire pressure monitoring system (TPMS) plays an important role in automobile safety. One of the important components of TPMS is a MEMS pressure sensor. This paper presents the virtual prototyping of TPMS which involves design, virtual fabrication and system level modelling of a square diaphragm based capacitive pressure sensor for a given stroke length. Intellisuite® MEMS design tool is used for obtaining the virtual prototype. The analytical expression for the sensitivity of square diaphragm in small deflection regime is derived and comparison of calculated results with simulated is presented.