A plc fuzzy adaptive seawater salinity test device and its control method

Abstract

The invention provides a PLC fuzzy self-adaptive seawater salinity test device and a control method of the PLC fuzzy self-adaptive seawater salinity test device, and belongs to the field of PLC fuzzy self-adaptive control. The test device is composed of a seawater salinity test platform and a PLC salinity control system. The seawater salinity test platform comprises a test chamber, a mother liquor tank and a recovery tank. The mother liquor tank conveys seawater to the test chamber through a seawater input pipeline, a seawater test solution in the test chamber is conveyed to the recovery tank through a recovery pipeline, and the recovery tank is connected with a water outlet pipeline. A PLC control unit in the PLC salinity control system controls opening and closing of different electromagnetic valves in the seawater salinity test platform through an I / O drive circuit interface module according to the detected solution level and salinity information of the test chamber, the detected solution level and salinity information of the mother liquor tank and the detected solution level and salinity information of the recovery tank, and therefore self-adaptive control over the solution level and the salinity of the seawater test solution in the test chamber is achieved eventually. According to the PLC fuzzy self-adaptive seawater salinity test device and the control method, multi-point self-adaptive control over the salinity of seawater can be conveniently achieved according to different requirements of a seawater salinity test.

Description

technical field [0001] The invention belongs to the field of PLC fuzzy adaptive control, and in particular relates to a seawater salinity test device based on PLC fuzzy adaptive control and a control method thereof. Background technique [0002] Seawater is an electrolyte solution containing a variety of salts, with 3% to 3.5% sodium chloride as the main salt, in which the content of chloride ions is very large, high salt content, sand content and usually dissolved air The characteristics make seawater highly corrosive to metals. In the protective coating technology of metal components and the research of seawater corrosion-resistant steel, it is usually necessary to conduct corrosion tests on metal components under different seawater salinity conditions, because seawater concentration control has no fixed mathematical model and is dynamic, and at the same time the salinity There is an inherent time delay in the sensor, and the conventional automatic control technology ofte...

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Problems solved by technology

In the protective coating technology of metal components and the research of seawater corrosion-resistant steel, it is usually necessary to conduct corrosion tests on metal components under different seawater salinity conditions, because seawater concentration control has no fixed mathematical model and is dynamic, and at the same time the salinity There is an inherent time delay in the sensor, and the conventional automatic control technology often cannot meet the requirements for the salinity control of the test solution

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