A kind of method and device for determining the interface of immiscible liquid

Abstract

The invention discloses an insoluble liquid interface determining method and device, so as to accurately determine the interface of a solution and prevent secondary pollution of the solution. The insoluble liquid interface determining method comprises the steps that a target image containing only two immiscible liquids is acquired, and the target image is processed to convert the target image intoa black-and-white binary image; whether the absolute value of the difference between the average gray value of any column in the black-and-white binary image and the average gray value of consecutiveN columns after the column is greater than a first preset threshold, and if so, the column is determined as the interface of two insoluble liquids in the target image, wherein N is a natural number;and the position of the interfaces of two insoluble liquids is determined according to the ratio of the column of the interface of two insoluble liquids in the target image to the total number of columns of the target image.

Description

technical field [0001] The invention relates to the technical field of solution extraction, in particular to a method and device for determining the interface of immiscible liquids. Background technique [0002] In chemical production, solvent extraction and liquid separation (or separation) are important factors affecting product quality. When liquid extraction and liquid separation are performed in solution extraction, it is first necessary to determine the interface of the solution. Whether the interface is determined accurately or not will directly affect the raw materials. utilization and product quality. [0003] At present, when determining the solution interface in the process of solution extraction and liquid separation, most of them are determined by manual visual inspection, and a small part are detected by contact sensors. However, the method of manual visual inspection lacks a uniform standard, and cannot guarantee the consistency of the interface every time. M...

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Problems solved by technology

However, the method of manual visual inspection lacks a uniform standard, and cannot guarantee the consistency of the interface every time. Moreover, because manual visual inspection cannot guarantee a sustained high degree of concentration, it is easy to cause excessive liquid separation during the liquid separation process, resulting in economic losses. loss, and the method of detection by contact sensor, due to the corrosive characteristics of chemical agents, it is easy to cause secondary pollution to the solution during the detection process

[0004] In summary, when determining the interface of the solution in the prior art, the method of manual visual inspection cannot accurately determine the interface of the solution, and the method of detection by the contact sensor is easy to cause secondary pollution to the solution

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