Alternatively to the ultrasound-based sensor, it would be more elegant to use capacitive displacement sensor. It works by detecting changes in dielectric constant near the sensor plates.
Liquid-level sensing based on capacitive sensors comes with its own challenges. It’s like absolute capacitance sensing. Unlike touch detection, the absolute value of the liquid level needs to be ...
Capacitive sensing is a contactless-sensing technique with numerous applications, ranging from proximity sensing (Fig. 1), gesture recognition, automotive rain sensors, and remote liquid-level sensing ...
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