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Vol. 187, Issue 4, April 2015, pp. 120-128

 

Bullet

 

A Critical Review of MEMS Capacitive Pressure Sensors
 

Kirankumar B. BALAVALAD, B. G. SHEEPARAMATTI

Department of Electronics & Communication Engineering, Basaveshwar Engineering College, Bagalkot-587103, Karnataka, India

E-mail: kiranb4004@gmail.com, sheepar@yahoo.com

 

 

Received: 6 March 2015 /Accepted: 27 March 2015 /Published: 30 April 2015

Digital Sensors and Sensor Sysstems

 

Abstract: This paper provides an overview including developments, challenges with respect to design, modelling, simulation and analysis of MEMS pressure sensors. Recently MEMS capacitive pressure sensors have gained advantages over piezoresistive pressure sensor due to high sensitivity, low power consumption, invariance of temperature effects. As theses sensors application range is increasing, it is essential to review the technological developments and future scope of MEMS capacitive pressure sensor. This paper focuses on the review of various types of capacitive pressure sensor principles, design, modelling, parameters to consider, materials that can be used in fabrication. Few models of capacitive pressure sensors have been simulated and the results are presented. Simulation results show how the capacitance varies with increase pressure (harsh environment). The design, modelling and simulation of pressure sensors have been done using Comsol/Multphysics.

 

Keywords: MEMS, Pressure Sensors, Capacitive Pressure Sensors, COMSOL Multiphysics.

 

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