Sensitivity Guard Sensor

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Anonymous
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Hello everyone, in my project I use cy8cmbr3110. I'm having problems with the sensitivity of the guard, I need to decrease the sensitivity of the guard. My settings for the guard are:

Hardware:

Guard sensor thickness: 2mm.

Overlay = 4mm glass.

EZ-Click:

Sensitivity (fF) = 400.

Automatic threshold = Enabled.

IIR filter = Enabled.

Median Filter = Enabled.

Debounce: 3.

Enable EMC noise immunity: Disabled.

With these settings it is still possible to decrease the sensitivity of the guard without changing the hardware?

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1 Solution

Hello,

Increasing the resistor value can affect the signal level. Since your Cp value is within limits, increasing the resistor value wouldn't affect your signal much. But make sure the guard sensor capacitor is charging and discharging completely. Also in your EZ- Click, make sure that your SNR is greater than equal to 5:1. If the SNR is greater than this ratio, then there wouldn't be any problem.

Also mention the series resistor value you have used. Do the SNR test and post your results so that it will be helpful for the community users.

Regards,

Bragadeesh.

Regards,
Bragadeesh

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