Sergio Márquez Sánchez

Mr. Sergio Márquez Sánchez

University of Salamanca, Salamanca, Castille-Leon, Spain
orcid

Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 November 2020 in Sensors
Verified
Journal Article
Open access
PDF file
Israel Campero JuradoIsrael Campero Jurado
Israel Campero Jurado
SSSergio Márquez Sánchez
Sergio Márquez Sánchez
JQJuan Quintanar-Gómez
Juan Quintanar-Gómez
Sara Rodríguez GonzálezSara Rodríguez González
Sara Rodríguez González
Juan CorchadoJuan Corchado
Juan Corchado
Information and communication technologies (ICTs) have contributed to advances in Occupational Health and Safety, improving the security of workers. The use of Personal Protective Equipment (PPE) based on ICTs reduces the risk of accidents in the workplace, thanks to the capacity of the equipment to make decisions on the basis of environmental factors. Paradigms such as the Industrial Internet of Things (IIoT) and Artificial Intelligence (AI) make it possible to generate PPE models feasibly and create devices with more advanced characteristics such as monitoring, sensing the environment and risk detection between others. The working environment is monitored continuously by these models and they notify the employees and their supervisors of any anomalies and threats. This paper presents a smart helmet prototype that monitors the conditions in the workers’ environment and performs a near real-time evaluation of risks. The data collected by sensors is sent to an AI-driven platform for analysis. The training dataset consisted of 11,755 samples and 12 different scenarios. As part of this research, a comparative study of the state-of-the-art models of supervised learning is carried out. Moreover, the use of a Deep Convolutional Neural Network (ConvNet/CNN) is proposed for the detection of possible occupational risks. The data are processed to make them suitable for the CNN and the results are compared against a Static Neural Network (NN), Naive Bayes Classifier (NB) and Support Vector Machine (SVM), where the CNN had an accuracy of 92.05% in cross-validation.

16 June 2022 in Biosensors
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Journal Article
Open access
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Juan García-Bernalt DiegoJuan García-Bernalt Diego
Juan García-Bernalt Diego
PFPedro Fernández-Soto
Pedro Fernández-Soto
SSSergio Márquez Sánchez
Sergio Márquez Sánchez
DSDaniel Santos Santos
Daniel Santos Santos
BSBegoña Febrer Sendra
Begoña Febrer Sendra
AMAntonio Muro
Antonio Muro
Nucleic acid amplification diagnostics offer outstanding features of sensitivity and specificity. However, they still lack speed and robustness, require extensive infrastructure, and are neither affordable nor user-friendly. Thus, they have not been extensively applied in point-of-care diagnostics, particularly in low-resource settings. In this work, we have combined the loop-mediated isothermal amplification (LAMP) technology with a handheld portable device (SMART-LAMP) developed to perform real-time isothermal nucleic acid amplification reactions, based on simple colorimetric measurements, all of which are Bluetooth-controlled by a dedicated smartphone app. We have validated its diagnostic utility regarding different infectious diseases, including Schistosomiasis, Strongyloidiasis, and COVID-19, and analyzed clinical samples from suspected COVID-19 patients. Finally, we have proved that the combination of long-term stabilized LAMP master mixes, stored and transported at room temperature with our developed SMART-LAMP device, provides an improvement towards true point-of-care diagnosis of infectious diseases in settings with limited infrastructure. Our proposal could be easily adapted to the diagnosis of other infectious diseases.

7 July 2021 in Sensors
Verified
Journal Article
Open access
PDF file
SSSergio Márquez Sánchez
Sergio Márquez Sánchez
Israel Campero JuradoIsrael Campero Jurado
Israel Campero Jurado
JSJorge Herrera Santos
Jorge Herrera Santos
Sara Rodríguez GonzálezSara Rodríguez González
Sara Rodríguez González
Juan CorchadoJuan Corchado
Juan Corchado
It is estimated that we spend one-third of our lives at work. It is therefore vital to adapt traditional equipment and systems used in the working environment to the new technological paradigm so that the industry is connected and, at the same time, workers are as safe and protected as possible. Thanks to Smart Personal Protective Equipment (PPE) and wearable technologies, information about the workers and their environment can be extracted to reduce the rate of accidents and occupational illness, leading to a significant improvement. This article proposes an architecture that employs three pieces of PPE: a helmet, a bracelet and a belt, which process the collected information using artificial intelligence (AI) techniques through edge computing. The proposed system guarantees the workers’ safety and integrity through the early prediction and notification of anomalies detected in their environment. Models such as convolutional neural networks, long short-term memory, Gaussian Models were joined by interpreting the information with a graph, where different heuristics were used to weight the outputs as a whole, where finally a support vector machine weighted the votes of the models with an area under the curve of 0.81.

9 October 2023 in Electronics
Verified
Journal Article
Open access
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SSSergio Márquez Sánchez
Sergio Márquez Sánchez
JCJaime Calvo-Gallego
Jaime Calvo-Gallego
AEAiman Erbad
Aiman Erbad
MIMuhammad Ibrar
Muhammad Ibrar
JFJavier Hernandez Fernandez
Javier Hernandez Fernandez
Juan CorchadoJuan Corchado
Juan Corchado
Nowadays, in contemporary building and energy management systems (BEMSs), the predominant approach involves rule-based methodologies, typically employing supervised or unsupervised learning, to deliver energy-saving recommendations to building occupants. However, these BEMSs often suffer from a critical limitation—they are primarily trained on building energy data alone, disregarding crucial elements such as occupant comfort and preferences. This inherent lack of adaptability to occupants significantly hampers the effectiveness of energy-saving solutions. Moreover, the prevalent cloud-based nature of these systems introduces elevated cybersecurity risks and substantial data transmission overheads. In response to these challenges, this article introduces a cutting-edge edge computing architecture grounded in virtual organizations, federated learning, and deep reinforcement learning algorithms, tailored to optimize energy consumption within buildings/homes and facilitate demand response. By integrating energy efficiency measures within virtual organizations, which dynamically learn from real-time inhabitant data while prioritizing comfort, our approach effectively optimizes inhabitant consumption patterns, ushering in a new era of energy efficiency in the built environment.

10 September 2020
Verified
Book Chapter
Closed access
PDF file
VSVishwani Sati
Vishwani Sati
SSSergio Márquez Sánchez
Sergio Márquez Sánchez
NSNiloufar Shoeibi
Niloufar Shoeibi
AAAshish Arora
Ashish Arora
JCJuan M. Corchado
Juan M. Corchado

12 May 2021 in Sensors
Verified
Journal Article
Open access
PDF file
SSSergio Márquez Sánchez
Sergio Márquez Sánchez
Israel Campero JuradoIsrael Campero Jurado
Israel Campero Jurado
DRDaniel Robles-Camarillo
Daniel Robles-Camarillo
Sara Rodríguez GonzálezSara Rodríguez González
Sara Rodríguez González
Juan CorchadoJuan Corchado
Juan Corchado
Wearable technologies are becoming a profitable means of monitoring a person’s health state, such as heart rate and physical activity. The use of the smartwatch is becoming consolidated, not only as a novelty but also as a very useful tool for daily use. In addition, other devices, such as helmets or belts, are beneficial for monitoring workers and the early detection of any anomaly. They can provide valuable information, especially in work environments, where they help reduce the rate of accidents and occupational diseases, which makes them powerful Personal Protective Equipment (PPE). The constant monitoring of the worker’s health can be done in real-time, through temperature, falls, noise, impacts, or heart rate meters, activating an audible and vibrating alarm when an anomaly is detected. The gathered information is transmitted to a server in charge of collecting and processing it. In the first place, this paper provides an exhaustive review of the state of the art on works related to electronics for human activity behavior. After that, a smart multisensory bracelet, combined with other devices, developed a control platform that can improve operators’ security in the working environment. Artificial Intelligence and the Internet of Things (AIoT) bring together the information to improve safety on construction sites, power stations, power lines, etc. Real-time and historic data is used to monitor operators’ health and a hybrid system between Gaussian Mixture Model and Human Activity Classification. That is, our contribution is also founded on the use of two machine learning models, one based on unsupervised learning and the other one supervised. Where the GMM gave us a performance of 80%, 85%, 70%, and 80% for the 4 classes classified in real time, the LSTM obtained a result under the confusion matrix of 0.769, 0.892, and 0.921 for the carrying-displacing, falls, and walking-standing activities, respectively. This information was sent in real time through the platform that has been used to analyze and process the data in an alarm system.