Browsing by Author "Barral Vales, Valentín"
Now showing items 1-11 of 11
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Alternatives for Locating People Using Cameras and Embedded AI Accelerators: A Practical Approach
Carro Lagoa, Ángel; Barral Vales, Valentín; González-López, Miguel; Escudero, Carlos J.; Castedo, Luis (MDPI, 2021)[Abstract] Indoor positioning systems usually rely on RF-based devices that should be carried by the targets, which is non-viable in certain use cases. Recent advances in AI have increased the reliability of person detection ... -
An IoT system for a smart campus: Challenges and solutions illustrated over several real-world use cases
Domínguez-Bolaño, Tomás; Barral Vales, Valentín; Escudero, Carlos J.; García-Naya, José A. (Elsevier, 2024-04)[Abstract]: This article discusses the development of an IoT system for monitoring and controlling various devices and systems from different vendors. The authors considered key challenges in IoT projects, such as ... -
An overview of IoT architectures, technologies, and existing open-source projects
Domínguez-Bolaño, Tomás; Campos Fernández, Omar; Barral Vales, Valentín; Escudero, Carlos J.; García-Naya, José A. (Elsevier, 2022-11)[Abstract]: Today’s needs for monitoring and control of different devices in organizations require an Internet of Things (IoT) platform that can integrate heterogeneous elements provided by multiple vendors and using ... -
Architecture for Multi-Technology Real-Time Location Systems
Rodas, Javier; Barral Vales, Valentín; Escudero, Carlos J. (Multidisciplinary Digital Publishing Institute, 2013)[Abstract]The rising popularity of location-based services has prompted considerable research in the field of indoor location systems. Since there is no single technology to support these systems, it is necessary to consider ... -
Environmental Cross-Validation of NLOS Machine Learning Classification/Mitigation with Low-Cost UWB Positioning Systems
Barral Vales, Valentín; Escudero, Carlos J.; García-Naya, José A.; Suárez-Casal, Pedro (M D P I AG, 2019-12-10)[Abstract] Indoor positioning systems based on radio frequency inherently present multipath-related phenomena. This causes ranging systems such as ultra-wideband (UWB) to lose accuracy when detecting secondary propagation ... -
Fine Time Measurement for the Internet of Things: A Practical Approach Using ESP32
Barral Vales, Valentín; Campos Fernández, Omar; Domínguez-Bolaño, Tomás; Escudero, Carlos J.; García-Naya, José A. (Institute of Electrical and Electronics Engineers Inc. (IEEE), 2022)[Abstract]: In the world of Internet of Things (IoT), obtaining the physical location of devices has always been a task of great interest for developing increasingly complex location-based services (LBS). That is why in ... -
Multi-Sensor Accurate Forklift Location and Tracking Simulation in Industrial Indoor Environments
Barral Vales, Valentín; Suárez-Casal, Pedro; Escudero, Carlos J.; García-Naya, José A. (M D P I AG, 2019-10-12)[Abstract] Location and tracking needs are becoming more prominent in industrial environments nowadays. Process optimization, traceability or safety are some of the topics where a positioning system can operate to improve ... -
Multicamera edge-computing system for persons indoor location and tracking
Carro Lagoa, Ángel; Barral Vales, Valentín; González-López, Miguel; Escudero, Carlos J.; Castedo, Luis (Elsevier, 2023-12)[Abstract]: This paper presents an indoor person localization and tracking system that uses multiple smart cameras equipped with artificial intelligence (AI) accelerators serving as edge-computing nodes. Our main contributions ... -
NLOS Identification and Mitigation Using Low-Cost UWB Devices
Barral Vales, Valentín; Escudero, Carlos J.; García-Naya, José A.; Maneiro-Catoira, Roberto (M D P I AG, 2019-08-08)[Abstract] Indoor location systems based on ultra-wideband (UWB) technology have become very popular in recent years following the introduction of a number of low-cost devices on the market capable of providing accurate ... -
Ultra Wideband location in scenarios without clear line of sight: a practical approach
Barral Vales, Valentín (2019)[Abstract] Indoor location has experienced a major boost in recent years. location based services (LBS), which until recently were restricted to outdoor scenarios and the use of GPS, have also been extended into ... -
Using the Power Delay Profile to Accelerate the Training of Neural Network-Based Classifiers for the Identification of LOS and NLOS UWB Propagation Conditions
Barral Vales, Valentín; Domínguez-Bolaño, Tomás; Escudero, Carlos J.; García-Naya, José A. (Institute of Electrical and Electronics Engineers, 2020)[Abstract]: Ultra-wideband (UWB) technology enables centimeter-level localization systems based on the accurate estimation of the actual distance between transmitter and receiver, by means of the precise estimation of the ...
