TH98526B - Liquid level measuring device using capacitance measurement principle made from printed circuit board - Google Patents

Abstract

OCR 25/01/2024 This invention is used to measure the liquid level by converting the liquid level into an electrical signal. There is an electrode plate made from a printed circuit board with a circuit pattern of positive and negative poles placed alternately in parallel. The width of the plate is 70-80 mm., height is 1-2 mm., and the distance between the plates is 1-2 mm. The result of this type of circuit pattern will cause an electrical capacitance value related to the liquid level. There is a microcontroller control circuit that converts the electrical capacitance value obtained from the electrode plate into a digital electrical signal by timing the electrical discharge received from the electrode plate.

Claims (1)

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