Capacitive adaptive universal liquid level measuring device and method

Abstract

The invention discloses a capacitive adaptive universal liquid level measuring device and method. The device comprises: a capacitive sensor module, a conversion module, a data collection and processing module and a power module, wherein the capacitive sensor module comprises a liquid level sensor, a first environmental sensor and a liquid sensor; the liquid level sensor collects a capacitance value reflecting a change in liquid level; the first environmental sensor collects a capacitance value in a liquid-free state of the environment; the liquid sensor measures a capacitance value in a statewhere liquid is immersed; the conversion module is connected to the capacitive sensor module; the capacitance value collected by the capacitive sensor module is converted into a frequency signal and digitally output; the data collection and processing module is connected to the output end of the conversion module, and data output by the conversion module is processed to obtain a liquid level height; the power module supplies power to the capacitive sensor module, the conversion module and the data collection and processing module. By the capacitive adaptive universal liquid level measuring device and method, the defects of the existing liquid level sensor are overcome, and the liquid level measurement has higher precision, safety and universality.

Description

Technical field [0001] The invention relates to the field of liquid level measurement, in particular to a capacitive self-adapting general liquid level measuring device and method. Background technique [0002] Liquid level measurement technology has a very wide range of applications in the industrial field. Under normal circumstances, it is only necessary to obtain the surface position of the material to record and store; as the degree of production automation increases, control and adjustment are carried out on the premise of liquid level data measurement. To ensure that automated production can be automatically controlled in the best state; in the production process of modern enterprises, the use of computers in production control centers has become more and more popular, and people use computer control systems for various comprehensive control and management of production, so the liquid level Measurement technology also puts forward higher requirements, requiring wide measure...

AI Technical Summary

Problems solved by technology

However, it has certain limitations. It is sensitive to the change of the dielectric constant induced by the change of the conductive medium and medium concentration, and the hang-up phenomenon easily produced by the viscous medium, and it is easy to produce large measurement errors.

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