Sensing method of washing water quality of household appliance

Abstract

The invention discloses a sensing method of washing water quality of a household appliance. A control system is utilized to operate a turbidity sensor and an electricity conductivity sensor to collect numerical values of clean water respectively for basic numerical values, then the turbidity sensor and the electricity conductivity sensor continuously collect water quality turbidity sensing numerical values and electricity conductivity sensing numerical values within a preset number of seconds respectively, the control system records the initial values, final values, average values, maximum values and minimum values of the water quality turbidity sensing numerical values and the electricity conductivity sensing numerical values, and the control system judges the number of seconds when the maximum values occur, the number of seconds when the minimum values occur and numerical values of the total duration of the sensing numerical values as sensing numerical value characteristics, then comparative analysis is conducted on the turbidity and electricity conductivity of the washing water with the basic numerical values respectively so as to obtain the turbidity sensing numerical value and the electricity conductivity sensing numerical value respectively which can be used for the control system to judge whether to continue the washing process or not, and thus the purposes of controlling the washing process and saving energy and water are achieved.

Description

technical field [0001] The invention relates to a sensing method for washing water quality of household electrical appliances. The method can predict the washing process, thereby controlling the amount and time of washing water, and controlling the time and water consumption of the washing process by sensing the degree of dirtiness of objects to be cleaned, so as to achieve energy saving , The purpose of water saving. Background technique [0002] With the continuous progress of the era of electronic technology, many electronic and electrical related home appliances have come out to provide people with comfort and convenience in life. In daily life, clothing, food, housing, transportation and entertainment, through different home appliances Products are processed quickly, reducing manual time-consuming, labor-intensive and imperfect. In general home appliances, some of them need to be connected to a water source for operation, such as washing machines, dishwashers, etc., us...

AI Technical Summary

Problems solved by technology

Generally, the turbidity value of water quality is between 1NTU and 10000NTU. The detection concentration of general household appliances is between 100NTU and 4000NTU. There are differences in data depending on the manufacturer and the type of cleaning equipment; The ion concentration of the water quality is below 1mS / cm. Considering the use of detergents for washing appliances, the general detection concentration is that the conductivity is between 0.1 and 10mS / cm; but general household appliances use A single sensor is used to detect the water quality, but it cannot detect the particle concentration and ion concentration (turbidity and conductivity) of the water quality at the same time. Because the turbidity sensor detects the particle concentration of the water quality, it cannot detect the ion concentration of the water quality ; The ion concentration sensor detects the ion concentration of water quality, and it is difficult to measure the particle concentration of water quality; in practical application, there are some shortcomings and problems, such as:

[0005] (1) The particle concentration sensor only detects the particle concentration of the water quality, but cannot detect the ion concentration of the water quality. It is easy to cause foreign matter in the water quality or cleaning detergent to affect the water quality. In addition, soluble substances such as sugar, salt, coffee, Theophylline, pigments, etc. are difficult to distinguish, resulting in incomplete cleaning

[0006] (2) The ion concentration sensor only detects the ion concentration of the water quality, but cannot detect the particle concentration of the water quality. If the particle concentration value in the water quality is high, it is easy to cause the detection electrode of the ion concentration sensor to oxidize or age, which may cause ion concentration. Reduced service life of the sensor

[0007] (3) At present, the single sensor installed in household appliances cannot detect the turbidity and conductivity of water quality at the same time. The judgment of water quality analysis is incorrect, and the time or water consumption of the washing process cannot be controlled, and energy saving cannot be achieved. the goal of

[0008] Therefore, how to solve the problems that the current turbidity sensor for water quality detection is limited by water quality detection (particle concentration, ion concentration), which leads to the deterioration of the quality of the detected water quality and the incorrect detection effect of the water quality sensor, that is, Relevant manufacturers engaged in this industry are eager to study the direction of improvement

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