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Capacitive Sensing Made Easy, Part 3 | Cypress Semiconductor

Capacitive Sensing Made Easy, Part 3

Last Updated: 
May 15, 2012

Tuning of capacitive sensors is the process of determining optimum values for various parameters associated with different sensors. Each sensor requires a separate set of calibrated parameters because of the difference in shape, size, and electromagnetic environment of each sensor. Calibration parameters have to be chosen carefully such that external noise due to EMI/EMC, power supply fluctuations, or changes in environment parameters like temperature and humidity do not break the detection algorithm or cause spurious finger detections.