Method for improving the control of water-conducting household appliances and household appliances suitable therefor

Abstract

The invention relates to a method for operating a water-conducting household appliance having a drum (3), a control device (18) and a spectrometer (21), the drum receiving objects (22, 34) to be treated, The drum has at least one circumference with at least one radiation channel (30, 35), the spectrometer comprises at least one radiation source (5, 27), at least one radiation detector (7, 28) and a microcomputer (6), wherein , the microcomputer (6) and the control device (18) are configured to exchange information with each other, so that data can be exchanged between the spectrometer (21) and the control device (18), it is characterized in that the method comprises the following steps: (a) The drum (3) is rotated at a predetermined rotational speed Dz, wherein the frequency f based on the number of revolution cycles of the radiation channels (30, 35) per unit time is defined as the ratio of the rotational speed Dz to the radiation channels (30, 35) The product of the quantities; (b) continuously emitted by at least one radiation source (5, 27) of the spectrometer (21) in the wavelength range λ 1 ‑λ 2 the radiation (31) in passes through at least one radiation channel (30, 35) of the rotating drum (3), so that a periodically interrupted radiation (31) with frequency f is produced in the drum (3), and the objects (22, 34) in the rotating drum (3) are loaded with radiation (31) periodically interrupted at a frequency f, and at least one radiation detector (7, 28) is arranged such that the objects (22, 28) 34) The reflected radiation (32) is recorded directly as a measurement signal without passing through the radiation channel (30, 35) and thus not being interrupted by the radiation channel (30, 35) at frequency f, and is generated by the control device (18) only in relation to A periodic function with a period length 1 / f - in particular a sinusoidal or rectangular function - associated with the household appliance (1) as a reference signal; (c) the measurement signal and the reference signal are transmitted to the microcomputer (6), with the aid of the stored in The analysis routine in the microcomputer (6) analyzes the measurement signal and compares it with the reference signal, and transmits the analyzed measurement signal to the control device (18); (d) via the control device (18) An operating program is selected and / or adapted with respect to the evaluated measurement signals, wherein steps (b) to (d) are carried out one or more times. Furthermore, the invention relates to a domestic appliance which is suitable for carrying out the method.

Description

Technical field[0001]The present invention relates to a method of operating a household appliance for operating a water, and the home appliance has a drum for receiving the item to be processed, the drum having at least one circumference with at least one radiation channel; control Device; spectrometer, the spectrometer comprising at least one radiation source, at least one radiation detector, and microcomputer, wherein the microcomputer and control means for exchanging information from each other, so that data can be exchanged between the spectrometer and the control device. The invention also relates to a household appliance suitable for use in a water absorbing of the method.Background technique[0002]Typically, a detergent and a cleaner are used to clean the items in the household appliances of the water. These detergents and cleaners typically have complex ingredients, as in addition to the washing active substance (so-called surfactant), there is usually an enzyme, bleach, wate...

AI Technical Summary

Problems solved by technology

[0007] On the other hand, household appliances that operate with volatile chemicals such as propane gas present a relatively high safety risk and in these cases faults or leaks need to be detected early

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