Liquid level detection device and method based on image recognition technology

Abstract

The invention relates to a liquid level detection device and method based on an image recognition technology, a container is an inverted circular truncated cone, and the liquid level radius of liquid in the container corresponds to a unique determined liquid level; a camera shoots a liquid level detection image of a container top opening, a liquid level of to-be-detected liquid in the container and a container inner wall between the container top opening and the liquid level of the to-be-detected liquid in the container under the irradiation of a light source, an image recognition system inputs the liquid level detection image into a trained YOLO-v3 detection model, the position coordinates of the external rectangle of the top opening of the container and the position coordinates of the external rectangle of the liquid level of the to-be-detected liquid are output, and the liquid level of the to-be-detected liquid is determined according to the position coordinates of the external rectangle of the top opening of the container, the position coordinates of the external rectangle of the liquid level of the to-be-detected liquid and the size parameters of the container. The liquid level can be accurately detected without considering the characteristics of the liquid and environmental factors.

Description

technical field [0001] The invention relates to the field of liquid level detection, in particular to a liquid level detection device and method based on image recognition technology. Background technique [0002] In the field of industrial control and automation technology, we often face the problem of liquid level detection, and common liquid level detection methods rely on liquid level sensors. One type of liquid level sensor is contact type, such as capacitive type, float type, electromagnetic type, etc., and the other type is non-contact type, such as ultrasonic and radar type. When detecting the liquid level, these two types of liquid level sensors are subject to the characteristics of the measured liquid itself and environmental factors such as temperature and humidity, salinity, pH, pressure, density, electromagnetic field, etc. In terms of measurement accuracy, reliability, stability and other technical indicators There is a bottleneck. In addition, in the field o...

AI Technical Summary

Problems solved by technology

Because of the underwater environment, and the density of drilling fluid is usually close to that of seawater, common liquid level detection methods such as electromagnetic liquid level gauges or density meters are difficult to meet the detection requirements

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