![]() Specifically, a 3D modeling software known as COMSOL Multiphysics will be used to design and test the sensor before fabricating it. ![]() Objective: The objective of this application note is to provide the reader with sufficient information on how to design a simple capacitive sensor. This application note will instruct the user on how to design a capacitive sensor using a 3D modeling software called COMSOL. These sensors work by sensing a conductive object nearby rather than detecting the physical state of the device. Capacitive sensors provide an alternative to the traditional mechanical buttons and sliders in electronics. They work by converting physical parameters such as temperature, pressure and wind speed into an electrical output that can be visualized by an observer. Keywords: COMSOL, Capacitive SensorĢ Table of Contents Introduction.3 Objective.3 Background.3 Implementation.5 Model Navigator.5 Geometry Modeling.6 Extruding to 3D Geometry.8 Physics Settings.9 Mesh Analysis.12 Solve Problem.13 Compute Capacitance.14 Conclusion.14 Appendix.15 Referencesģ Introduction: Sensors are used in many important applications like medical equipment, industrial control systems, air-conditioning systems, aircrafts and satellites. This application note focuses on a general capacitive sensor design that can be altered easily to fit any application. With this software, the sensor can be modeled for any type of application like touch sensing, water sensing and pressure sensing. It provides the user with the flexibility to model the sensor using a simple 2D user interface that can be easily transformed into a 3D model. Time-dependent adaptive meshing automatically resolves sharp diffusion fronts in two-phase flow simulations, bringing faster and more accurate simulations.Īutomatic Remeshing makes more extreme deformation states possible where a simulation with moving mesh is used.1 ECE 480 DESIGN TEAM 6 Designing a Capacitive Sensor using COMSOL Application Note Arslan Qaiser April 4 th, 2010 Executive Summary: Capacitive sensors can be virtually designed using a powerful 3D modeling software, COMSOL. Virtual Geometry tools allow for modification of CAD models without changing the underlying surface curvature and enable very efficient meshing. Report Generator creates HTML reports for models of varying degrees of detail, from brief to complete.Ĭompressible High-Mach Number Flow for designing nozzles, pipe networks, and valves, and for modeling aerodynamic phenomena. LiveLink for SolidWorks allows SolidWorksĮnvironment and work synchronously with COMSOL Multiphysics.įast multiphysics assembly brings faster and more memory efficient computations on virtually any type of computer platform, from laptop to cluster. ![]() LiveLink for SpaceClaim brings the fusion of direct modeling and multiphysics simulation in a tightly integrated environment. ![]() LiveLink for AutoCAD makes COMSOL Multiphysics simulations in 3D available for AutoCAD users. Geomechanics Module enables multiphysics modeling in geotechnical applications such as tunnels.Įlectrodeposition Module brings the power of COMSOL to electrochemical processes for chrome plating. Microfluidics Module brings easy-to-use tools for the study of microfluidic devices and rarefied gas flows. With this release, COMSOL continues to deliver on its promise to supply the science and engineering markets with the state-of-the-art simulation products for an expanding set of applications. Version 4.2 empowers current users to do more with their simulation environments, while new industries will now be able to leverage the innovation of multiphysics simulation. COMSOL Multiphysics 4.2 represents a significant expansion of the software’s applications, features, and functionality. ![]()
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