53 documents found, page 1 of 6
Image Transfer over MQTT in IoT: Message Segmentation and Encryption for Remote...
Valente, David; Brito, Thadeu; Correia, Márcio; Carvalho, José Augusto; Lima, JoséThe Internet of Things (IoT) has revolutionized how objects and devices interact, creating new possibilities for seamless connectivity and data exchange. This paper presents a unique and effective method for transferring images via the Message Queuing Telemetry Transport (MQTT) protocol in an encrypted manner. The image is split into multiple messages, with each carrying a segment of the image, and employ top-n...
Enhancing Forest Fire Detection and Monitoring Through Satellite Image Recognit...
Brito, Thadeu; Pereira, Ana I.; Costa, Paulo Gomes da; Lima, JoséWorldwide, forests have been harassed by fire in recent years. Either by human intervention or other reasons, the history of the burned area is increasing considerably, harming fauna and flora. It is essential to detect an early ignition for fire-fighting authorities can act quickly, decreasing the impact of forest damage impacts. The proposed system aims to improve nature monitoring and improve the existing su...
Data acquisition filtering focused on optimizing transmission in a LoRaWAN netw...
Brito, Thadeu; Azevedo, Beatriz Flamia; Mendes, João; Zorawski, Matheus; Fernandes, Florbela P.; Pereira, Ana I.; Rufino, José; Lima, JoséDeveloping innovative systems and operations to monitor forests and send alerts in dangerous situations, such as fires, has become, over the years, a necessary task to protect forests. In this work, a Wireless Sensor Network (WSN) is employed for forest data acquisition to identify abrupt anomalies when a fire ignition starts. Even though a low-power LoRaWAN network is used, each module still needs to save powe...
An integer programming approach for sensor location in a forest fire monitoring...
Azevedo, Beatriz Flamia; Alvelos, Filipe; Rocha, Ana; Brito, Thadeu; Lima, José; Pereira, Ana I.Forests worldwide have been devastated by fires. Forest fires cause incalculable damage to fauna and flora. In addition, a forest fire can lead to the death of people and financial damage in general, among other problems. To avoid wildfire catastrophes is fundamental to detect fire ignitions in the early stages, which can be achieved by monitoring ignitions through sensors. This work presents an integer program...
FLOOR - Forklift laser omnidirectional robot
Pinto, Vítor H.; Ribeiro, Francisco M.; Brito, Thadeu; Pereira, Ana I.; Lima, José; Costa, Paulo Gomes daThe robot presented in this paper was developed with the main focus on participating in robotic competitions. Therefore, the subsystems here presented were developed taking into account performance criteria instead of simplicity. Nonetheless, this paper also presents background knowledge in some basic concepts regarding robot localization, navigation, color identification and control, all of which are key for a...
A data logger for educational purposes of a laboratory chemical reactor: an IoT...
Lima, José; Brito, Thadeu; Ferreira, Olga; Afonso, Maria João A.P.S.; Pinto, Vítor H.; Carvalho, José Augusto; Costa, Paulo Gomes daThis paper presents the development of an acquisition system and data logger from an existing set of three continuous stirred-tank reactors in series. The reactors are currently used in chemical engineering educational laboratories to perform kinetic and tracer experiments. In this sense, to accomplish the store data process, the volumetric flow rate and the concentration of tracer, reactants and/or products of...
Dynamic urban solid waste management system for smart cities
Silva, Adriano S.; Brito, Thadeu; Díaz de Tuesta, Jose Luis; Lima, José; Pereira, Ana I.; Silva, Adrián; Gomes, HelderIncreasing population in cities combined with efforts to ob tain more sustainable living spaces will require a smarter Solid Waste Management System (SWMS). A critical step in SWMS is the collection of wastes, generally associated with expensive costs faced by companies or municipalities in this sector. Some studies are being developed for the optimization of waste collection routes, but few consider inland cit...
A WSN real-time monitoring system approach for measuring indoor air quality usi...
Brito, Thadeu; Nakano, Alberto Yoshiro; Lima, JoséIndoor Air Quality (IAQ) describes the air quality of a room, and it refers to the health and comfort of the occupants. Typically, people spend around 90% of their time in indoor environments where the concentration of air pollutants and, occasionally, more than 100 times higher than outdoor levels. According to the World Health Organization (WHO), indoor air pollution is responsible for the death of 3.8 millio...
Node assembly for waste level measurement: embrace the smart city
Silva, Adriano S.; Brito, Thadeu; Díaz de Tuesta, Jose Luis; Lima, José; Pereira, Ana I.; Silva, Adrián; Gomes, HelderMunicipal Solid Waste Management Systems (MSWMS) worldwide are currently facing pressure due to the rapid growth of the population in cities. One of the biggest challenges in this system is the inefficient expenditure of time and fuel in waste collection. In this regard, cities/- municipalities in charge of MSWMS could take advantage of information and communication technologies to improve the overall quality o...
Development of surplus power generation forecast for use by residential loads
Dias, Paloma Greiciana de Souza; Brito, Thadeu; Silva, William R.; Pereira, Ana I.; Lopes, Luis C.G.; Santos, Murillo F. dos; Costa, Paulo Gomes daEnergy consumption has been increasing in the last years and thus, energy efficiency is one of the most important topics actually. Besides, the consumption and energy generation forecast help in efficiency optimization. This paper presents the development of a system for forecasting surplus power generation to be used by residential loads connected to smart plugs. In this way, it is intended to collaborate with...