Food quality detection system and detection method based on electronic nose
A quality inspection and electronic nose technology, applied in the direction of material resistance, can solve the problems of single detection data processing method, narrow product range, and limited electronic nose technology, so as to improve the detection accuracy, solve the baseline drift, and improve the accuracy. Effect
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Embodiment 1
[0054] Such as figure 1 As shown, the food quality detection system based on the electronic nose of the present embodiment includes an electronic nose system, an air filter device and a microcomputer, and also includes a sample container 3, and the air filter device includes a first air filter device 1 and a second air filter device. Two air filter devices 2; the electronic nose system 4 is connected with the microcomputer 5; the first air filter device is connected with the sample container, and the second air filter device is connected with the electronic nose system.
[0055] The microcomputer is equipped with host computer control software for controlling the electronic nose system to set working parameters, sample detection, sensor cleaning and experimental data collection, processing and analysis. The electronic nose system includes a sensor array, an air supply power unit and several air chambers. The sensor array includes 8 gas sensors; each sensor is in an indep...
Embodiment 2
[0078] The structural part in embodiment 2 is identical with embodiment 1, in embodiment 1
[0079] Insert the following steps between said step (7) and step (8):
[0080] Such as Figure 9 As shown, different food quality prediction models are fitted according to the cross-correlation coefficient eigenvalue foe of different quality foods;
[0081] Substitute the eigenvalue foe of the cross-correlation coefficient into the formula of the following milk quality prediction model to calculate the food quality coefficient:
[0082]
[0083] Among them, foe is the eigenvalue of the cross-correlation coefficient, is the food quality factor.
[0084] Judging food quality based on milk quality coefficient.
[0085] Detect pure milk samples mixed with different proportions of milk powder:
[0086] The detection principle of the semiconductor gas sensor is the change of electrical properties caused by the combination of sensitive materials and milk volatile gas components,...
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