Method for judging component faults of reverse osmosis water purifier based on water pressure detection

Abstract

The invention discloses a method for judging component faults of a reverse osmosis water purifier based on water pressure detection. The method is characterized in that: A, an inlet water digital pressure sensor is connected to a water outlet of a water pump, and an outlet water digital pressure sensor is connected to a fresh water outlet of a reverse osmosis membrane; and B, the water pressure fluctuates frequently at a relatively large amplitude, and in order to avoid wrong judgment, a graded fault tolerant mechanism is introduced. By selection of a reasonable pressure sensor configuration location and a fault tolerant mechanism, intelligent diagnosis of components of the reverse osmosis water purifier is achieved, and the method for judging the component faults of the reverse osmosis water purifier based on water pressure detection is provided. The method disclosed by the invention only needs adjustment of a fault threshold required by fault tolerance to adapt to components and equipment of different model specifications, and is strong in adaptability and simple in design.

Description

technical field [0001] The invention relates to an intelligent fault diagnosis technology, in particular to a fault judgment method for components of a reverse osmosis water purifier based on water pressure detection. Background technique [0002] The reverse osmosis fresh water machine uses the separation function of the semi-permeable reverse osmosis membrane to pass water through the reverse osmosis membrane under a certain pressure, and some water molecules flow out through the reverse osmosis membrane, which is fresh water. Impurities in water (such as inorganic salts, organic matter, microorganisms, etc.) are relatively concentrated and flow out, which is technically called concentrated water. Since the reverse osmosis membrane needs sufficient pressure to work, it is generally necessary to have a booster pump to increase the pressure, and a flow limiting device is placed at the concentrated water outlet to ensure sufficient osmotic pressure for the reverse osmosis mem...

AI Technical Summary

Problems solved by technology

[0004] Compared with the voltage, the water pressure fluctuation of tap water is very serious, and the water pressure of individual terminals may even have a difference of more than ten times. Especially for non-pipeline tap water end users, they want to use conventional methods to detect and intelligently judge component failures and water The correlation of pressure is particularly difficult, which hinders the application of intelligent control methods in the field of water purifier products

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