Non-contact capacitive continuous water level detection device for a humidification purifier

Abstract

The utility model relates to a non - contact type capacitance continuous water level detection device for humidification purifier, including capacitive sensor, the capacitive sensor is completely placed in the water tank outside, close water tank lateral wall, the capacitive sensor is layered structure, signal processing circuit, signal processing circuit with capacitive sensor electricity is connected for with capacitive sensor's electric capacity value converts frequency signal, microcontroller, microcontroller with signal processing circuit electric connection for receiving signal processing circuit output's frequency signal and handles, the utility model's advantage: adopt non - contact type capacitive sensor, completely place in the water tank outside, with water body physical isolation. This design avoided the shortening problem of life of traditional contact type electrode because of corrosion, incrustation, reduced the maintenance cost of user.

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