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Piezoresistive Pressure Sensor Voltage Readout

Posted 2025年1月22日 GMT+8 03:03 Electromagnetics, General, MEMS & Piezoelectric Devices 1 Reply

Osman Ay
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Hi everyone,

I drew a piezoresistive pressure sensor with 4 ressitors (R1,R2,R3,R4) which are piezoressistive material. I want to build also a readout circuit with wheatstone bridge to simulate voltage output when pressure applied.

However, I cannot connect an electircal cirrcuit to solid materials in COMSOL. with electrical circuit module, it only defines nodes. but I have no idea which nodes will corresponds to my resistors in 3D solid sketch? Which module should I use to do this analysis? Can anybody help please?

![https://hizliresim.com/qjsaz59]

1 Reply Last Post 2025年1月22日 GMT+8 10:37
David Greve
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Posted: 8 months ago 2025年1月22日 GMT+8 10:37

If you have the full AC/DC module you have the ability to make boundaries Terminals, which can then be connected to the circuits module. If not you may have to look for a workaround.

Probably you want to use cir and ec physics.

If you have the full AC/DC module you have the ability to make boundaries Terminals, which can then be connected to the circuits module. If not you may have to look for a workaround. Probably you want to use cir and ec physics.

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