Odor intensity detection model generation method, odor intensity detection method and refrigerator

Abstract

The invention provides an odor intensity detection model generation method, an odor intensity detection method and a refrigerator. The odor intensity detection model generation method comprises the following steps: respectively extracting a first detection sample group and a second detection sample group from a pre-prepared gas sample group; detecting the first detection sample group by using a three-point comparison type odor bag method to obtain the sample odor intensity of the first detection sample group; detecting the second detection sample group by using a pre-selected gas sensor combination to obtain a sample characteristic value of the second detection sample group; and fitting a function relationship between the odor intensity and the characteristic value according to the sample odor intensity and the sample characteristic value, and taking the function relationship as a detection model for detecting the odor intensity. According to the scheme provided by the invention, the actual odor intensity of the actual gas can be quickly, simply and conveniently determined at low cost according to the detection model.

Description

technical field [0001] The invention relates to the technical field of home appliances, in particular to a method for generating a detection model of odor intensity, a method for detecting odor intensity and a refrigerator. Background technique [0002] The rapid development of modern science and technology has promoted the popularization of intelligent life, which has transformed people's requirements for refrigerators from basic refrigeration functions to intelligent preservation. The odor detection of refrigerators is one of the key points to realize the intelligent preservation function. Refrigerator odor is the result of accumulation and superposition of odors released by the food itself and food spoilage, which can reflect the freshness of the food in the refrigerator to a certain extent. From the perspective of chemical composition, refrigerator odors mainly include 2-isobuthiazole, diethyl sulfide, aromatic esters, amines, carbon dioxide, etc., which belong to a ver...

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Problems solved by technology

[0003] There are two main methods for odor detection. The first is the sensory evaluation method. However, this method requires professional training for the sensory olfactory personnel and is greatly affected by the physical condition of the olfactory personnel, so it cannot be achieved in a short period of time. The second is the instrumental analysis method, which is based on gas chromatography and mass spectrometry, that is, the composition and concentration of odorous gases are determined by precise chemical analysis, but this method is complicated to operate and requires high requirements for operators , It takes a long time and the cost is high, and it is impossible to give the overall intensity of the refrigerator odor

The above two detection methods are not suitable for the odor detection of the internal environment of the refrigerator

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