Detection method and detection device for state change of household appliances and materials

Abstract

The invention discloses a household appliance, a material state change detection method and a material state change detection device. The detection method includes steps: irradiating a to-be-detected material with preset light rays; detecting types of emergent rays, transmitting through the to-be-detected material or reflected by the to-be-detected material; judging whether the types of the emergent rays is accordant with a first preset light ray type or not; if not, judging that the state of the to-be-detected material changes. According to the material state change detection method, whether the state of the to-be-detected material changes or not can be detected conveniently, quickly, effectively and accurately.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to a detection method and a detection device for household appliances and material state changes. Background technique [0002] The method for detecting material state changes in the related art is relatively complicated, and technicians need to perform complex operations to obtain the detection results, and the detection results usually have large errors, resulting in the need to repeat the detection many times, which is time-consuming and labor-intensive. [0003] Take the cation exchange resin used for softening water in household appliances in the field of water treatment and filtration as an example. When detecting the failure state of this kind of resin, the national standard EDTA chemical titration method is usually used to detect the Ca content of the softened water. 2+ and Mg 2+ Not only does it need to take water samples for chemical titration, but also requires a lot ...

AI Technical Summary

Problems solved by technology

[0002] The method for detecting material state changes in related technologies is relatively complicated, and technicians need to perform complex operations to obtain test results, and there are usually large errors in the test results, resulting in the need to repeat the test many times, which is time-consuming and laborious

[0003] Take the cation exchange resin used for softening water in household appliances in the field of water treatment and filtration as an example. When detecting the failure state of this kind of resin, the national standard EDTA chemical titration method is usually used to detect the Ca content of the softened water. 2+ and Mg 2+ Not only does it need to take water samples for chemical titration, but also requires a lot of chemical reagents and indicators. The process is cumbersome, and the detection equipment needs to be disassembled. It can only be carried out in the laboratory, not suitable for household environments or industrial production lines. In addition, , the test results need to be calculated step by step, the final test results are obtained slowly, and visual feedback cannot be obtained

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