نوع مقاله : مقاله پژوهشی
نویسندگان
1 1. دانشجوی کارشناسی ارشد مهندسی مکانیک بیوسیستم، دانشگاه رازی، کرمانشاه،ایران
2 دانشیار مهندسی مکانیک بیوسیستم،دانشگاه رازی، کرمانشاه، ایران
3 استادیار مهندسی مکانیک بیوسیستم،دانشکده کشاورزی سنقر، دانشگاه رازی، کرمانشاه، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Almonds are one of the most important types of nuts around the world, which are transformed from a convenient snack to a healthy food for human health.Also, peanut is one of the essential and economic plants in the world, which is very rich in terms of nutrition.The purpose of this research was to investigate the performance of the electronic nose in distinguishing slivered almonds from slivered peanuts.In order to conduct experiments in this research, three types of slivered almond and three types of slivered peanut were used.The samples were tested with an electronic nose made of 10 metal oxide semiconductor (MOS) sensors.In this research, linear discriminant analysis (LDA), principal component analysis (PCA), support vector machine (SVM) and quadratic discriminant analysis (QDA) were used for data analysis. The QDA method with 100% accuracy had a good performance in the classification of slivered almonds varieties and slivered peanuts varieties. Also, the LDA method was able to classify slivered peanuts varieties with 100% accuracy. The LDA method was able to distinguish slivered almonds from slivered peanuts with with an average accuracy 91%. The SVM method was able to distinguish slivered almonds from slivered peanuts with with an average accuracy 84%. The results showed that the lectronic nose is a suitable tool for distinguishing slivered almonds from slivered peanuts.
کلیدواژهها [English]
Distinguishing slivered almonds from peanuts using electronic nose
EXTENDED ABSTRACT
Due to the importance of identifying varieties of slivered almonds and slivered peanuts, as well as the importance of detecting common fraud in the field of replacing slivered almonds with slivered peanuts, this research was carried out by electronic nose. The features extracted from the signals obtained from the electronic nose were processed by LDA, PCA, SVM and QDA, and the results were compared with each other.
In order to conduct experiments, three varities of slivered almonds and three varities of slivered peanut were prepared and tested. The tests were performed by an electronic nose device E-nose system was based on ten metal oxide semiconductor sensors (MOS) (Table 1), where the actual images of this system are shown in Fig. 2. The system consisted of a sensor compartment, sample chamber, a micro pump, three two-way solenoid valves, data collection system (USB), 5 and 12 V power supply, inlet air filter (activated carbon), and graphical interface (LabVIEW 2014). The pre-processed data were analyzed by linear discriminant analysis (LDA), principal component analysis (PCA), and support vector machine (SVM) and quadratic discriminant analysis (QDA) using Unscrambler V 9.7 and Matlab 2015a software.
The results obtained from the PCA method for slivered almond varieties, showed that the value of the two main components were78% and 10%, respectively, and the amount of variance between the samples described a total of 88% of the data. The results of PCA classification for slivered peanut varieties showed that the value of the two main components PC-1 and PC-2 were 69% and 12%, respectively, and described 81% of the total variance of the data. The results of PCA for distinguishing slivered almond from slivered peanut showed that the two main components PC-1 and PC-2 are 63% and 17%, respectively, and the amount of variance between the samples is 80% of the total data. LDA method was able to distinguish slivered almond varieties with an average accuracy 94%. The LDA method was able to distinguish slivered almond from slivered peanut with with an average accuracy 91%. The SVM method was able to distinguish slivered almond from slivered peanut with with an average accuracy 84%. The QDA method was able to distinguish different types of almond slices with 100% accuracy. The classification accuracy of QDA for the classification slivered almond varieties and slivered peanut varieties was 100%. Also, the QDA method was able to distinguish slivered almond from slivered peanut with with an average accuracy 97%.
In this research, the PCA method was able to distinguish slivered almond varieties and slivered peanut varieties with an accuracy of 88% and 81%, respectively. LDA method was able to classify slivered peanuts varieties with 100% accuracy. The SVM method did not have a good performance in the classification of slivered almond varieties and slivered peanut varieties. The QDA method with an accuracy 100% had a good performance in classifying slivered almond varieties and slivered peanut varieties. TGS2610, MQ3 and TGS822 sensors had the most effect in discrimintion slivered almond varieties, MQ135 and TGS2610 sensors had the most effect in distinguishing slivered peanut varieties and also distinguishing slivered almond from slivered peanut.