Sensatech Research - Capacitive Sensor Technology

To evaluate how to procede with designing a particular solution to a problem we will need to establish some characteristics of the problem. Some of which are listed below:

Simple signal processing may:

Store and switch an output at an adjustable set point.
Present absolute analogue values.
Feature multiple set points across an analogue range.
Incorporate various compensation inputs.
Incorporate various filtering to reduce noise or interference.
Incorporate numerous sensor inputs.
Be integrated with sensor amplifier circuits with the sensor elements.
Be physically remote from sensor elements.
Incorporate analogue to digital conversions or the inverse
Allow wider communication or information sharing with other devices.

Complex signal processing may incorporate software using:

Finite Element or difference software
Fourier Analysis
Custom analytic software

in order to develop a unique solution. For example if a matrix of capacitive sensors collects the data shown at right can we reconstruct the shape of the face that generated this data.

Or in the example below, of data generated by a metal cylinder suspended 4cm above a large capacitive array, can we reconstruct the shape of the cylinder with just as much accuracy on the remote side as we can achieve on the immediate facing side of the cylinder.


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