A non-contact high-precision liquid level detection system and its detection method

Abstract

The invention provides a non-contact high-precision liquid level detection system. The system comprises an air supply pipeline, an electromagnetic valve, a throttle valve, a pressure sensing module and a processing module. The invention further provides a liquid level detection method using the system, and the method comprises the following steps: the processing module receives a liquid level detection signal, and controls an electric proportional valve, so that the electric proportional valve adjusts the pressure of an input gas source into hydraulic detection pressure, an electromagnetic coil is electrified, and a detected closed container is deflated through the throttle valve; the processing module receives real-time pressure change data detected by the pressure sensing module; and theprocessing module analyzes and determines the liquid level height of the corresponding detected closed container according to the received real-time pressure change data. The liquid level detection system does not need to be installed on the detected container, only needs to be connected with the container through an air pipe and is not limited by installation space, and no heat transfer exists between the detected container and the detection system; the volume is monitored in real time according to the change of the internal pressure of the container during inflation and deflation.

Description

technical field [0001] The invention relates to the technical field of liquid level detection, in particular to a non-contact high-precision liquid level detection system and a detection method thereof. Background technique [0002] With the development of electronic technology, various electronic detection devices and detection methods are used more and more in people's life. At present, the commonly used devices for liquid level detection usually use capacitive liquid level detection devices for detection. Such liquid level detection devices generally have disadvantages such as inability to work normally in high temperature environments and large detection errors. Contents of the invention [0003] In view of the above problems, the first aspect of the present invention provides a non-contact high-precision liquid level detection system, [0004] The purpose of the first aspect of the present invention is achieved by the following technical solutions: [0005] A non-co...

AI Technical Summary

Problems solved by technology

At present, the commonly used devices for liquid level detection usually use capacitive liquid level detection devices for detection. This kind of liquid level detection devices generally has the disadvantages of not being able to work normally in high temperature environments and large detection errors.

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