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Chilo, José
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Publications (10 of 72) Show all publications
Postigo-Malaga, M., Jimenez-Caceres, A. M., Pelegri-Sebastia, J. & Chilo, J. (2023). Autonomous Wireless Sensor System for Emergency Monitoring Roads with Low Communication Coverage. Electronics, 12(23), Article ID 4829.
Open this publication in new window or tab >>Autonomous Wireless Sensor System for Emergency Monitoring Roads with Low Communication Coverage
2023 (English)In: Electronics, E-ISSN 2079-9292, Vol. 12, no 23, article id 4829Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
MDPI, 2023
Keywords
802.11 protocol; DigiMesh protocol; microcontrollers; radars; road-accidents emergency monitoring; wireless sensor system
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:hig:diva-43463 (URN)10.3390/electronics12234829 (DOI)001116889100001 ()2-s2.0-85179314606 (Scopus ID)
Available from: 2023-12-18 Created: 2023-12-18 Last updated: 2023-12-21Bibliographically approved
Hernández, E., Pelegrí-Sebastiá, J., Sogorb, T. & Chilo, J. (2023). Evaluation of Red Wine Acidification Using an E-Nose System with Venturi Tool Sampling. Sensors, 23(6), Article ID 2878.
Open this publication in new window or tab >>Evaluation of Red Wine Acidification Using an E-Nose System with Venturi Tool Sampling
2023 (English)In: Sensors, E-ISSN 1424-8220, Vol. 23, no 6, article id 2878Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
MDPI, 2023
Keywords
acetic acid; data analysis; MOS gas sensor; Venturi effect; red wine
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:hig:diva-41551 (URN)10.3390/s23062878 (DOI)000959095600001 ()36991590 (PubMedID)2-s2.0-85151204526 (Scopus ID)
Available from: 2023-04-02 Created: 2023-04-02 Last updated: 2023-04-20Bibliographically approved
Mendoza-Montoya, J., Rondán-Sanabria, G. G., Velarde-Allazo, E., Mårtensson, S.-G., Olsson, A. & Chilo, J. (2023). Methane emission measurement wireless system for monitoring air pollution close to Chilla-Juliaca landfill. In: Larrondo Petrie M.M., Texier J., Matta R.A.R. (Ed.), Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology: . Paper presented at 21st LACCEI International Multi-Conference for Engineering, Education and Technology, LACCEI 2023, 19-21 July 2023, Buenos Aires, Argentina. LACCEI
Open this publication in new window or tab >>Methane emission measurement wireless system for monitoring air pollution close to Chilla-Juliaca landfill
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2023 (English)In: Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology / [ed] Larrondo Petrie M.M., Texier J., Matta R.A.R., LACCEI , 2023Conference paper, Published paper (Refereed)
Abstract [en]

In many countries, most organic waste is usually placed in landfills, which generates public concern about the health effects of emissions pollutants. The natural bacterial decomposition of organic waste produces landfill gases, about half of the methane, with the remainder mainly carbon dioxide and minor amounts of other gases. Real-time measurement and modeling of emissions gases in landfills are essential. This work develops a low-cost wireless measurement system using MOS gas sensors (MQ4, MQ5, and MQ9), a 32 bits microcontroller, an XBee module, and HC-12 wireless communications modules. The system can be mounted on an uncrewed aerial vehicle (UAV, drone) or deployed as a wireless sensor network. Experiments have been carried out near a closed landfill, and measurement results show high methane concentrations.

Place, publisher, year, edition, pages
LACCEI, 2023
Series
Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology, ISSN 2414-6390
Keywords
dioxide; landfill gases; methane; real-time measurement
National Category
Civil Engineering
Identifiers
urn:nbn:se:hig:diva-43113 (URN)2-s2.0-85172306348 (Scopus ID)9786289520743 (ISBN)
Conference
21st LACCEI International Multi-Conference for Engineering, Education and Technology, LACCEI 2023, 19-21 July 2023, Buenos Aires, Argentina
Available from: 2023-10-09 Created: 2023-10-09 Last updated: 2023-10-09Bibliographically approved
Nabil, T. B., Ängskog, P. & Chilo, J. (2021). 7-GHz Measurement System for in-situ Space/Material Channel Characterisation. In: 2021 11th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS): . Paper presented at 2021 11th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS), Cracow, Poland, 22-25 September 2021 (pp. 37-42). IEEE, 1
Open this publication in new window or tab >>7-GHz Measurement System for in-situ Space/Material Channel Characterisation
2021 (English)In: 2021 11th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS), IEEE , 2021, Vol. 1, p. 37-42Conference paper, Published paper (Refereed)
Abstract [en]

The fifth generation (5G) mobile communication system will change the world through intelligent mobile devices and flexible networks to offer a new wide range of applications. mmWave radio propagation combined with a variety of new frequencies and bandwidth creates new radio measurement challenges. There are major limitations when it comes to mmWave components and measuring instruments. In this work we have designed and built a 7-GHz measuring system intended for in-situ channel characterization in environments where transmitters and receivers are located at different heights, like e.g. wireless sensor network installations. Such configurations are likely to be commonplace with the advent of e.g. Industry 4.0. The system has been tested in space experiments, where the distance and height between transmitter and receiver were changed. In addition, wave propagation behavior was studied through different materials placed between transmitter and receiver. The measurement system presented in this paper will provide an insight into the design of similar 5G test systems.

Place, publisher, year, edition, pages
IEEE, 2021
Series
Proceedings of the IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems, ISSN 2770-4254
Keywords
5G, mm Wave, electromagnetic wave propagation, signal attenuation, channel characterization
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:hig:diva-37610 (URN)10.1109/IDAACS53288.2021.9660981 (DOI)000848377500008 ()2-s2.0-85124806784 (Scopus ID)978-1-6654-4209-1 (ISBN)978-1-6654-2605-3 (ISBN)
Conference
2021 11th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS), Cracow, Poland, 22-25 September 2021
Available from: 2022-01-13 Created: 2022-01-13 Last updated: 2022-09-22Bibliographically approved
Wallin, K.-O., Andersson, R. L., Ängskog, P. & Chilo, J. (2021). Femtocoulomb range triboelectric noise meter for super-low noise cables. In: 2021 IEEE International Instrumentation and Measurement Technology Conference (I2MTC): . Paper presented at 2021 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), Glasgow, U.K., 17-20 May 2021 (pp. 1-6). IEEE
Open this publication in new window or tab >>Femtocoulomb range triboelectric noise meter for super-low noise cables
2021 (English)In: 2021 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), IEEE , 2021, p. 1-6Conference paper, Published paper (Refereed)
Abstract [en]

Bending, twisting or vibrations in coaxial and multi-wire cables can generate signal noise, often dominated by triboelectric charging effects. Cables that ensure low triboelectric noise are called low noise cables. These cables are used in many low-level measurement applications such as medical instruments and sensors in nuclear plant. In this work, we have designed a triboelectric charge meter that can detect and amplify charges at sub-femtocoulomb levels, sufficient to characterize the triboelectric noise in a wide range of high performance coaxial cables. During loop bending tests of, standard-, low noise-, and super-low noise coaxial cables, average microphonic noise levels of 2600 fC, 142 fC, and 2.9 fC respectively, were measured, i.e. super-low noise coaxial cables exhibits an almost 60 dB reduction of the triboelectric noise compared to standard coaxial cables and 35 dB compared to low noise cables.

Place, publisher, year, edition, pages
IEEE, 2021
Keywords
triboelectric noise, microphonic noise, low noise cable, femtocoulomb, charge amplifier
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:hig:diva-36683 (URN)10.1109/I2MTC50364.2021.9460067 (DOI)000825383600262 ()2-s2.0-85113712421 (Scopus ID)978-1-7281-9539-1 (ISBN)
Conference
2021 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), Glasgow, U.K., 17-20 May 2021
Available from: 2021-07-01 Created: 2021-07-01 Last updated: 2022-08-12Bibliographically approved
Montoya, J. J., Penalva, G. T., Navarro, E. À., Zea, K. H., Suaña, J. A. & Chilo, J. (2021). IoT Aroma Sensor Module to Determine Beverage Alcohol Grade. In: PROCEEDINGS OF THE THE 11TH IEEE INTERNATIONAL CONFERENCE ON INTELLIGENT DATA ACQUISITION AND ADVANCED COMPUTING SYSTEMS: TECHNOLOGY AND APPLICATIONS (IDAACS'2021): . Paper presented at 2021 11th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS), Cracow, Poland, 22-25 September 2021 (pp. 43-48). IEEE, 1
Open this publication in new window or tab >>IoT Aroma Sensor Module to Determine Beverage Alcohol Grade
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2021 (English)In: PROCEEDINGS OF THE THE 11TH IEEE INTERNATIONAL CONFERENCE ON INTELLIGENT DATA ACQUISITION AND ADVANCED COMPUTING SYSTEMS: TECHNOLOGY AND APPLICATIONS (IDAACS'2021), IEEE , 2021, Vol. 1, p. 43-48Conference paper, Published paper (Refereed)
Abstract [en]

Industry 4.0 is the technology of the future, which is based, among other things, on the Internet of Things (IoT) and sensors that provide online information about the production processes. Electronic noses (E-noses) are gas sensor technologies expanding IoT, contributing to better alcohol production performance and providing important information about production process parameters. In this work, we have developed a low-cost, wireless, and compactness aroma sensor module applied to the alcohol industry. We use four metal oxide sensors, MQ-2, MQ-3, MQ-4, and MQ-135, embedded in the E-nose headspace and controlled by a 32-bit ESP32 WROOM microcontroller. The alcohol grade measurements were performed on beer and wine samples. MQ-3 sensor was stable till 20% alcohol grade, and MQ-2, MQ-4, and MQ-135 sensors were regular only until 5% alcohol. Our experiments let us determined alcohol grade with precision above 92%.

Place, publisher, year, edition, pages
IEEE, 2021
Series
Proceedings of the IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems, ISSN 2770-4254
Keywords
E-Nose, IoT, Alcohol grade, Industry 4.0
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:hig:diva-37609 (URN)10.1109/IDAACS53288.2021.9661006 (DOI)000848377500009 ()2-s2.0-85124799083 (Scopus ID)978-1-6654-2605-3 (ISBN)978-1-6654-4209-1 (ISBN)
Conference
2021 11th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS), Cracow, Poland, 22-25 September 2021
Available from: 2022-01-13 Created: 2022-01-13 Last updated: 2022-09-22Bibliographically approved
Argume, A., Coaguila, R., Yanyachi, P. R. & Chilo, J. (2021). NOAA Image Data Acquisition to Determine Soil Moisture in Arequipa - Perú. IEEE Transactions on Nuclear Science, 68(8), 1933-1936
Open this publication in new window or tab >>NOAA Image Data Acquisition to Determine Soil Moisture in Arequipa - Perú
2021 (English)In: IEEE Transactions on Nuclear Science, ISSN 0018-9499, E-ISSN 1558-1578, Vol. 68, no 8, p. 1933-1936Article in journal (Refereed) Published
Abstract [en]

In recent years, irrigations have been built on dry areas in Majes-Arequipa. Over time, the irrigations water forms moist areas in lower areas, which can have positive or negative consequences. Therefore, it is important to know in advance where the water from the new irrigation will appear. The limited availability of real-time satellite image data is still a hindrance to some applications. Data from environmental satellites NOAA (National Oceanic and Atmospheric Administration) are available fee and license free. In order to receive data, users must obtain necessary equipment. In this work we present a satellite data acquisition system with an RTL SDR receiver, two 137-138 Mhz designed antennas, Orbitron, SDRSharp, WXTolmag and MatLab software. We have designed two antennas, a Turnstile Crossed dipole antenna with Balun and a quadrifilar helicoidal antenna. The antennas parameter measurements show very good correspondence with those obtained by simulation. The RTL SDR RTL2832U receiver, combined with our antennas and software, forms the system for recording, decoding, editing and displaying Automatic Picture Transmission (APT) signals. The results show that the satellite image receptions are sufficiently clear and descriptive for further analysis.

Place, publisher, year, edition, pages
IEEE, 2021
Keywords
Antenna, automatic picture transmission (APT) signals, National Oceanic and Atmospheric Administration (NOAA) image, RealTek (RTL) receiver
National Category
Environmental Engineering
Identifiers
urn:nbn:se:hig:diva-36110 (URN)10.1109/TNS.2021.3087351 (DOI)000687247300057 ()2-s2.0-85111066770 (Scopus ID)
Available from: 2021-06-10 Created: 2021-06-10 Last updated: 2021-10-29Bibliographically approved
Quiroz Oviedo, J. E., Alanko, T., Mendoza Montoya, J. J., Postigo-Malaga, M., Rivera Suaña, J. A. & Chilo, J. (2021). Wireless sensor nodes for early detection of food degradation in restaurants and commercial kitchens. In: 2021 IEEE International Instrumentation and Measurement Technology Conference (I2MTC): . Paper presented at 2021 IEEE International Instrumentation and Measurement Technology Conference (I2MTC); Glasgow, U.K., 17-20 May 2021 (pp. 1-6). IEEE
Open this publication in new window or tab >>Wireless sensor nodes for early detection of food degradation in restaurants and commercial kitchens
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2021 (English)In: 2021 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), IEEE , 2021, p. 1-6Conference paper, Published paper (Refereed)
Abstract [en]

The climate issue is the biggest challenge of our time and food waste can be considered an unnecessarily large environmental burden. Reducing food waste and increasing resource management in the food chain is a priority area in a sustainable society, therefore technology development must be used in advantage to achieve long-term environmental and sustainability goals. In this work, we have developed a hardware / software integrated wireless sensor network to get information as early as possible about food going bad. The developed wireless sensor network is built using Raspberry Pi, ESP-WROOM-32 microcontroller with integrated communication modules and gas-sensitive sensors. The remote control for data collection and other tasks is performed wirelessly from a laptop and has been programmed in Phyton. Experiments have been carried out with promising results.

Place, publisher, year, edition, pages
IEEE, 2021
Keywords
ESP32; food waste; gas sensor; microcontroller; Raspberry Pi; wireless sensor network
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:hig:diva-36685 (URN)10.1109/I2MTC50364.2021.9460027 (DOI)000825383600224 ()2-s2.0-85113713895 (Scopus ID)978-1-7281-9539-1 (ISBN)
Conference
2021 IEEE International Instrumentation and Measurement Technology Conference (I2MTC); Glasgow, U.K., 17-20 May 2021
Available from: 2021-07-01 Created: 2021-07-01 Last updated: 2022-08-12Bibliographically approved
Argume, A., Coaguila, R., Yanyachi, P. & Chilo, J. (2020). Design of Turnstile, Quadrifilar Helical and V-Dipole Antennas to Obtain NOAA Images. In: 2020 IEEE Congreso Bienal de Argentina (ARGENCON): . Paper presented at 2020 IEEE Congreso Bienal de Argentina (ARGENCON), Resistencia, Argentina, 1-4 December 2020. IEEE
Open this publication in new window or tab >>Design of Turnstile, Quadrifilar Helical and V-Dipole Antennas to Obtain NOAA Images
2020 (English)In: 2020 IEEE Congreso Bienal de Argentina (ARGENCON), IEEE , 2020Conference paper, Published paper (Refereed)
Abstract [en]

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.

Place, publisher, year, edition, pages
IEEE, 2020
National Category
Signal Processing
Identifiers
urn:nbn:se:hig:diva-36905 (URN)10.1109/ARGENCON49523.2020.9505560 (DOI)2-s2.0-85114052683 (Scopus ID)978-1-7281-5958-4 (ISBN)978-1-7281-5957-7 (ISBN)
Conference
2020 IEEE Congreso Bienal de Argentina (ARGENCON), Resistencia, Argentina, 1-4 December 2020
Available from: 2021-08-19 Created: 2021-08-19 Last updated: 2021-09-13Bibliographically approved
Mendoza Montoya, J., Olsson, A., Mårtensson, S.-G. & Chilo, J. (2020). Drone Gas Concentration Measurement System for Landfills. In: 2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC): . Paper presented at 2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), Dubrovnik, Croatia, 25-28 May 2020 (pp. 1-5). IEEE
Open this publication in new window or tab >>Drone Gas Concentration Measurement System for Landfills
2020 (English)In: 2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), IEEE , 2020, p. 1-5Conference paper, Published paper (Refereed)
Abstract [en]

The number of landfills in Sweden is not exactly known, but the number of closed landfills containing organic waste is estimated to be between 4000 and 8000. Some of these are close to large and growing cities and are of interest to exploitation. Urban air quality affects people's health and well-being, real-time measurement and modelling of gases in the air is important for planning future cities. In this paper, we present a cost-effective method for monitoring methane and CO2 based on gas sensors mounted on an unmanned aircraft (UAV, drone). A drone-based wireless system is developed with MOS sensors (MQ2, MQ4 and TGS2611), Arduino-nano, XBee wireless communications modules and the interface to a base station's computer is written in Python. The system was tested in real field measurements with good results.

Place, publisher, year, edition, pages
IEEE, 2020
Keywords
methane, carbon dioxide, landfills, e-nose, drone
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:hig:diva-33170 (URN)10.1109/I2MTC43012.2020.9129192 (DOI)2-s2.0-85088307690 (Scopus ID)978-1-7281-4460-3 (ISBN)
Conference
2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), Dubrovnik, Croatia, 25-28 May 2020
Available from: 2020-07-03 Created: 2020-07-03 Last updated: 2022-09-21Bibliographically approved
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