Hello, I'm developing Capacitive Proximity Sensor with 'FDC1004'.
The rated range of this sensor is 25mm or higher.
As the electrode moves away from the detector, the capacitance value(pF) decreases.
I take the average value to acquire the capacitance value at a certain distance.
For example, if the capacitance value were 2.4887pF, 2.4774pF, 2.4923pF at the 3mm point, the average value '2.4861pF' is the capacitance at the 3mm point.
When the capacitance value is acquired in this way, (the distance from the electrode to the detector 0mm -> 25mm at intervals of 1mm) ideally, the capacitance value continues to decrease.
However, at approximately 20mm points the value rather increased, and decreased again to 25mm.
Of course, at about 25mm or higher, the acquisition of capacitance value is very small, so it's meaningless, but can you tell me why this climbing point is created?
Let me ask you one last question.
"Are there any products developed or mass-produced using FDC Series?"
Thanks for your consideration of my question.
