Liquid level measuring method, liquid level measuring device, equipment and liquid level detecting circuit

Abstract

The invention discloses a liquid level measuring method, a liquid level measuring device, equipment and a liquid level detecting circuit. The liquid level measuring device comprises a liquid level probe, the liquid level detecting circuit and a master controller. The liquid level probe is arranged in a container, and the top of the liquid level probe and a shell of the container are connected withthe liquid level detecting circuit; the master controller is connected with the liquid level detecting circuit and is used for determining the internal liquid level of the container according to electric parameters outputted by the liquid level detecting circuit. The liquid level measuring method, the liquid level measuring device, the equipment and the liquid level detecting circuit have the advantages that the water level can be continuously detected by the aid of the liquid level measuring method, the liquid level measuring device, the equipment and the liquid level detecting circuit; theliquid level probe is long in service life and simple in design as compared with infrared sensors, the cost can be saved, and the liquid level measuring method, the liquid level measuring device, theequipment and the liquid level detecting circuit are high in accuracy.

Description

technical field [0001] The invention relates to the field of unit technology, in particular to a liquid level measurement method, device and equipment, and a liquid level detection circuit. Background technique [0002] At present, when detecting the liquid level in containers such as electric kettles, liquid level detection methods such as infrared sensor type or capacitive type are mostly used. The principle of the infrared sensor type is that the infrared wave sending device will emit infrared waves, and the infrared waves will be reflected after touching the liquid level. Determine the level of liquid level. The principle of the capacitive detection method is that when the liquid level rises, the distance between the two plates of the capacitor increases and the capacitance decreases, and the capacitance can be detected according to this corresponding relationship, and the level of the liquid can be judged. Although the above two methods can realize liquid level detect...

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Problems solved by technology

[0004] In order to solve the problem of high cost and low accuracy of the way of detecting water level in the prior art

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