Pub Date : 2024-07-25DOI: 10.1109/TAFE.2024.3415124
Basma Alsaid;Tracy Saroufil;Romaissa Berim;Sohaib Majzoub;Abir J. Hussain
Physical contamination of food is a prevalent issue within the food production industry. Contamination can occur at any stage of the food processing line. Many techniques are used in the literature for the detection of physical contamination in food. However, these techniques have some limitations when applied to fresh food products, particularly, when samples are characterized by diverse shapes and sizes. In addition, some of these techniques fail to detect hidden contaminants. In this work, we propose a novel approach to detect hidden physical contamination in fresh food products, including plastic fragments, stone fragments, and other foreign food objects, such as different food types that might inadvertently contaminate the sample. Electrical impedance tomography (EIT) is utilized to capture the impedance image of the sample to be used for contamination detection. Four deep learning models are trained using the EIT images to perform binary classification to identify contaminated samples. Three of the models are developed to detect the contaminants, each on its own, while the fourth model is used to detect any of the contaminates put together. The trained models achieved promising results with the accuracy of 85%, 92.9%, and 85.7% detecting plastic, stones, and other food types, respectively. The obtained accuracy when all contaminants put together was 78%. This performance shows the efficacy of the proposed approach over the existing techniques in the field.
食品的物理污染是食品生产行业普遍存在的问题。污染可能发生在食品加工生产线的任何阶段。文献中使用了许多检测食品物理污染的技术。然而,当这些技术应用于新鲜食品时,尤其是当样品的形状和大小各不相同时,就会受到一些限制。此外,其中一些技术还无法检测到隐藏的污染物。在这项工作中,我们提出了一种新方法来检测新鲜食品中隐藏的物理污染,包括塑料碎片、石块碎片和其他异物,如可能无意中污染样品的不同食物类型。电阻抗层析成像(EIT)被用来捕捉样品的阻抗图像,以用于污染检测。使用 EIT 图像训练了四个深度学习模型,以执行二元分类来识别受污染的样品。其中三个模型用于单独检测污染物,而第四个模型则用于综合检测任何污染物。经过训练的模型在检测塑料、石块和其他食物类型方面分别取得了 85%、92.9% 和 85.7% 的准确率,取得了可喜的成果。当所有杂质加在一起时,准确率为 78%。这一结果表明,与该领域的现有技术相比,所提出的方法非常有效。
{"title":"Food Physical Contamination Detection Using AI-Enhanced Electrical Impedance Tomography","authors":"Basma Alsaid;Tracy Saroufil;Romaissa Berim;Sohaib Majzoub;Abir J. Hussain","doi":"10.1109/TAFE.2024.3415124","DOIUrl":"https://doi.org/10.1109/TAFE.2024.3415124","url":null,"abstract":"Physical contamination of food is a prevalent issue within the food production industry. Contamination can occur at any stage of the food processing line. Many techniques are used in the literature for the detection of physical contamination in food. However, these techniques have some limitations when applied to fresh food products, particularly, when samples are characterized by diverse shapes and sizes. In addition, some of these techniques fail to detect hidden contaminants. In this work, we propose a novel approach to detect hidden physical contamination in fresh food products, including plastic fragments, stone fragments, and other foreign food objects, such as different food types that might inadvertently contaminate the sample. Electrical impedance tomography (EIT) is utilized to capture the impedance image of the sample to be used for contamination detection. Four deep learning models are trained using the EIT images to perform binary classification to identify contaminated samples. Three of the models are developed to detect the contaminants, each on its own, while the fourth model is used to detect any of the contaminates put together. The trained models achieved promising results with the accuracy of 85%, 92.9%, and 85.7% detecting plastic, stones, and other food types, respectively. The obtained accuracy when all contaminants put together was 78%. This performance shows the efficacy of the proposed approach over the existing techniques in the field.","PeriodicalId":100637,"journal":{"name":"IEEE Transactions on AgriFood Electronics","volume":"2 2","pages":"518-526"},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142408760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this work, modeling, simulation, and experimental measurements of a LoRaWAN network aimed at implementing a dense farm-area network (FAN) in the agrifood industry are presented. First, the network is modeled for a farm of the future, with as many sensors as would be useful, for the four main productive chains in Uruguay as a study case: livestock, timber, agriculture, and dairy industries. To this end, a survey of commercial sensors was conducted, a few farms were visited, and managers and partners in agrocompanies were interviewed. A LoRaWAN network with a single gateway was simulated to estimate the efficiency (related to data packets lost), in the case of a 1000 ha cattle field with more than 1500 sensors and some cameras sharing the network. Finally, the network efficiency was measured, using 30–40 LoRa modules @ 915 MHz, transmitting at pseudorandom times to emulate up to thousands of LoRa sensor nodes. The simulated and measured results are very similar, reaching > 92% efficiency in all cases. Sites bigger than 1000 ha on the four main productive chains were also simulated. Additionally, energy consumption and transmission distance measurements of LoRaWAN modules are presented, as well as an overview of the economic aspects related to the deployment of the network to corroborate them fit the requirements of a FAN in the agribusiness.
{"title":"A Model for a Dense LoRaWAN Farm-Area Network in the Agribusiness","authors":"Alfredo Arnaud;Matías Miguez;María Eugenia Araújo;Ariel Dagnino;Joel Gak;Aarón Jimenz;José Job Flores;Nicolas Calarco;Luis Arturo Soriano","doi":"10.1109/TAFE.2024.3422843","DOIUrl":"https://doi.org/10.1109/TAFE.2024.3422843","url":null,"abstract":"In this work, modeling, simulation, and experimental measurements of a LoRaWAN network aimed at implementing a dense farm-area network (FAN) in the agrifood industry are presented. First, the network is modeled for a farm of the future, with as many sensors as would be useful, for the four main productive chains in Uruguay as a study case: livestock, timber, agriculture, and dairy industries. To this end, a survey of commercial sensors was conducted, a few farms were visited, and managers and partners in agrocompanies were interviewed. A LoRaWAN network with a single gateway was simulated to estimate the efficiency (related to data packets lost), in the case of a 1000 ha cattle field with more than 1500 sensors and some cameras sharing the network. Finally, the network efficiency was measured, using 30–40 LoRa modules @ 915 MHz, transmitting at pseudorandom times to emulate up to thousands of LoRa sensor nodes. The simulated and measured results are very similar, reaching > 92% efficiency in all cases. Sites bigger than 1000 ha on the four main productive chains were also simulated. Additionally, energy consumption and transmission distance measurements of LoRaWAN modules are presented, as well as an overview of the economic aspects related to the deployment of the network to corroborate them fit the requirements of a FAN in the agribusiness.","PeriodicalId":100637,"journal":{"name":"IEEE Transactions on AgriFood Electronics","volume":"2 2","pages":"284-292"},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142430881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-12DOI: 10.1109/TAFE.2024.3421238
Bernardita Štitić;Luca Urbinati;Giuseppe Di Guglielmo;Luca P. Carloni;Mario R. Casu
Combining data-driven machine learning (ML) with microwave sensing (MWS) makes it possible to analyze packaged food in real time without any contact and spot low-density contaminants (e.g., plastics or glass splinters) that current industrial food safety methods cannot detect. This is achieved by training ML classifiers on the scattered signal reflected by the target food product exposed to MWs. In this article, we present an enhanced ML flow to boost foreign body detection accuracy of ML classifiers in MWS systems. Innovations include assessing the performance of a multiclass classifier, training it with MW frequency pairs as features, data augmentation, a new preprocessing scaler suitable for the feature distributions in the datasets, quantization, and pruning. The final test results, obtained using our previously designed MWS system and collected dataset of contaminated hazelnut-cocoa spread jars, show a multiclass accuracy for the floating-point model of 96.5%, which corresponds to a binary-equivalent accuracy of 97.3%. This is an improvement of +3.3% against the binary classifier of the previous work. The quantized and pruned model, instead, reached a multiclass accuracy of 94.2%, or a binary accuracy of 95.4%, thus still improving the previous work by +1.4%. Also, we achieved a latency of 26 $mu$