| 1. |
- Chilo, José, et al.
(författare)
-
E-nose application to food industry production
- 2016
-
Ingår i: IEEE Instrumentation & Measurement Magazine. - 1094-6969 .- 1941-0123. ; 19:1, s. 27-33
-
Tidskriftsartikel (refereegranskat)abstract
- Food companies worldwide must constantly engage in product development to stay competitive, cover existing markets, explore new markets, and meet key consumer requirements. This ongoing development places high demands on achieving quality at all levels, particularly in terms of food safety, integrity, quality, nutrition, and other health effects. Food product research is required to convert the initial product idea into a formulation for upscaling production with ensured significant results. Sensory evaluation is an effective component of the whole process. It is especially important in the last step in the development of new products to ensure product acceptance. In that stage, measurements of product aroma play an important role in ensuring that consumer expectations are satisfied. To this end, the electronic nose (e-nose) can be a useful tool to achieve this purpose. The e-nose is a combination of various sensors used to detect gases by generating signals for an analysis system. Our research group has investigated the scent factor in some foodstuff and attempted to develop e-noses based on low-cost technology and compact size. In this paper, we present a summary of our research to date on applications of the e-nose in the food industry.
|
|
| 2. |
- Climent, Enric, et al.
(författare)
-
Development of the MOOSY4 eNose IoT for Sulphur-Based VOC Water Pollution Detection
- 2017
-
Ingår i: Sensors. - : MDPI AG. - 1424-8220. ; 17:8
-
Tidskriftsartikel (refereegranskat)abstract
- In this paper, we describe a new low-cost and portable electronic nose instrument, the Multisensory Odor Olfactory System MOOSY4. This prototype is based on only four metal oxide semiconductor (MOS) gas sensors suitable for IoT technology. The system architecture consists of four stages: data acquisition, data storage, data processing, and user interfacing. The designed eNose was tested with experiment for detection of volatile components in water pollution, as a dimethyl disulphide or dimethyl diselenide or sulphur. Therefore, the results provide evidence that odor information can be recognized with around 86% efficiency, detecting smells unwanted in the water and improving the quality control in bottled water factories.
|
|
| 3. |
- del Cueto Belchi, Alejandro, et al.
(författare)
-
Multi-sensor olfactory system : Using temperature modulation
- 2012
-
Ingår i: 2012 IEEE I2MTC - International Instrumentation and Measurement Technology Conference, Proceedings. - : IEEE conference proceedings. - 9781457717710 ; , s. 1139-1141
-
Konferensbidrag (refereegranskat)abstract
- In recent years, with the advent of new and cheaper sensors, the use of olfactory systems in home, industry and hospital has get a new start. Multi-sensor systems can improve the ability to distinguish between complex mixtures of volatile substances. In this approach, 32 metal oxide semiconductor (MOS) sensors operating at different temperatures have been used to develop a multi-sensor olfactory system.
|
|
| 4. |
- del Cueto Belchi, Alex, et al.
(författare)
-
Sensor characterization for multisensor odor-discrimination system
- 2013
-
Ingår i: Sensors and Actuators A-Physical. - : Elsevier BV. - 0924-4247 .- 1873-3069. ; 191, s. 68-72
-
Tidskriftsartikel (refereegranskat)abstract
- In recent years, with the advent of new and cheaper sensors, the use of olfactory systems in homes, industries, and hospitals has a new start. Multisensor systems can improve the ability to distinguish between complex mixtures of volatile substances. To develop multisensor systems that are accurate and reliable, it is important to take into account the anomalies that may arise because of electronic instabilities, types of sensors, and air flow. In this approach, 32 metal oxide semiconductor sensors of 7 different types and operating at different temperatures have been used to develop a multisensor olfactory system. Each type of sensor has been characterized to select the most suitable temperature combinations. In addition, a prechamber has been designed to ensure a good air flow from the sample to the sensing area. The multisensor system has been tested with good results to perform multidimensional information detection of two fruits, based on obtaining sensor matrix data, extracting three features parameters from each sensor curve and using these parameters as the input to a pattern recognition system.
|
|
| 5. |
- Ferrer Coll, Javier, 1983-, et al.
(författare)
-
Industrial Indoor Environment Characterization : Propagation Models
- 2011
-
Ingår i: Proceedings of 10th International Symposium on Electromagnetic Compatibility, EMC Europe 2011. - : IEEE. - 9780954114633 ; , s. 245-249
-
Konferensbidrag (refereegranskat)abstract
- Results of three years' field measurements on radio propagation in industrial environments have been analyzed using four propagation models: the Saleh-Valenzuela model, the two-cluster model, the indoor power delay profile model, and our more recent adjusted model. In this study, we used the results of measurements performed at a steel mill, a paper mill, and in a laboratory environment for three frequency bands (183-683 MHz, 1640-2140 MHz, and 2200-2700 MHz) and for line-of-sight and non-line-of-sight cases.
|
|
| 6. |
- Ferrer Coll, Javier, 1983-, et al.
(författare)
-
Statistical Characterization of the Electromagnetic Environment in a Hospital
- 2010
-
Ingår i: 2010 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC). - 9781424456215 ; , s. 289-292
-
Konferensbidrag (refereegranskat)abstract
- Thanks to advances in digital technology many hospitals are becoming populated with wireless medical applications to control life critical functions. Electromagnetic interference can cause severe performance degradations on these wireless applications. Several accidents have been reported which calls for a more thorough characterization of these interferences in areas where critical wireless applications are used. In this paper the results of electromagnetic interference measurements performed in a hospital are presented. The amplitude probability distribution (APD) and the inter arrival pulse probability distribution (PSD) are used to characterize these environments. In addition, Middleton parameters can be calculated from the measured data. This study is considered to be a first effort to characterize the 20 MHz -2500 MHz band in hospitals.
|
|
| 7. |
- Hernández, Esmeralda, et al.
(författare)
-
Evaluation of Red Wine Acidification Using an E-Nose System with Venturi Tool Sampling
- 2023
-
Ingår i: Sensors. - : MDPI. - 1424-8220. ; 23:6
-
Tidskriftsartikel (refereegranskat)abstract
- The quality of wine is checked both during the production process and upon consumption. Therefore, manual wine-tasting work is still valuable. Due to the nature of wine, many volatile components are released, and it is therefore difficult to determine which elements need to be controlled. Acetic acid is one of the substances found in wine and is a crucial substance for wine quality. Gas sensor systems may be a potential alternative for manual wine tasting. In this work, we have developed a TGS2620 gas sensor module to analyze acetic acid levels in red wine. The gas sensor module was refined according to the Venturi effect along with signal slope analysis, providing promising results. The example included in this paper demonstrates that there is a direct relationship between the slope of the MOS gas sensor response and the acetic acid concentration. This relationship is useful to evaluate the ethanol oxidation in acetic acid in red wine during its production process.
|
|
| 8. |
- Olarte, Oscar, et al.
(författare)
-
Glucose detection in human sweat using an electronic nose
- 2013
-
Ingår i: Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. - New York : IEEE conference proceedings. - 9781457702143 - 9781457702167 ; , s. 1462-1465
-
Konferensbidrag (refereegranskat)abstract
- In the last years attempts to develop a non-invasive glucose system based on the glucose levels in sweat have been studied. In this paper, 32 metal oxide semiconductor (MOS) sensors operating at different temperatures have been used to develop a multisensor olfactory system that allows to study the glucose levels in sweat. In order to develop repeatable experiments, artificial sweat at different glucose concentrations were developed in the laboratory. The obtained results suggest high viability of the approach. Although, the sensitivity of the sensors system needs to be improved.
|
|
| 9. |
- Postigo-Malaga, Mauricio, et al.
(författare)
-
Autonomous Wireless Sensor System for Emergency Monitoring Roads with Low Communication Coverage
- 2023
-
Ingår i: Electronics. - : MDPI. - 2079-9292. ; 12:23
-
Tidskriftsartikel (refereegranskat)abstract
- Rural areas often face communication challenges due to limited mobile coverage on remote roads, posing significant difficulties in reporting emergencies and accidents. This study presented an autonomous vehicle tracking system using low-cost radar sensors to detect possible emergencies in the sections of roads with low cell coverage. The radar sensor system could determine the number of vehicles that passed through the nodes and classify them based on the vehicle type. Each node within the system is equipped with ten radars, a processor unit, and a radio transmitter to communicate with the network in real-time, achieving a rapid response time of just 0.2 s. To ensure seamless connectivity, two distinct wireless communication networks are employed, one for the connection between the towers in the same node and the other for the connection between nodes and a center with cellular coverage. The results of this study can be useful in conveying emergency messages, as well as traffic management.
|
|
| 10. |
- Argume, Abel, et al.
(författare)
-
Design of Turnstile, Quadrifilar Helical and V-Dipole Antennas to Obtain NOAA Images
- 2020
-
Ingår i: 2020 IEEE Congreso Bienal de Argentina (ARGENCON). - : IEEE. - 9781728159584 - 9781728159577
-
Konferensbidrag (refereegranskat)abstract
- Satellite image processing of an ecosystem allows us to understand it and know, prevent, and investigate the events that take place in the environment. For this we need cheap and simple image reception systems, which include antennas, receivers and hardware/software for signal processing. In this work a turnstile antenna, a quadrifilar helical antenna and a V-dipole antenna were designed, constructed and used to obtain automatic NOAA image transmission signal and convert to a NOAA satellite image.
|
|
