Capacitive Sensing

by leonhart88
Tags: capacitive, sensing
leonhart88 is offline
Mar27-13, 01:23 PM
P: 2
Hi All,

I've been recently reading up on capacitive sensing. Specifically, the case where you have one sensor which is an electrode with a static electric field. When this electrode comes near a conductive target (which is floating and not part of the circuit), the change in potential of the initial electrode can be detected and thus a proximity sensor can be made.

What I am trying to figure out, is if more conductive liquids/materials, result in a larger change of potential and/or capacitance. In other words, will a capacitive sensor work better if the liquid it is trying to detect is more conductive? If so, why?

Phys.Org News Partner Physics news on
Sensitive detection method may help impede illicit nuclear trafficking
CERN: World-record current in a superconductor
Beam on target: CEBAF accelerator achieves 12 GeV commissioning milestone

Register to reply

Related Discussions
Capacitive Sensing & iPhone Touch Screen Computing & Technology 16
Capacitive sensing surface Electrical Engineering 4
Capacitive Circuit Introductory Physics Homework 1
Capacitive Catastrophe Electrical Engineering 5
DC and capacitive reactance Advanced Physics Homework 1