Percorrer por autor "Oliveira Neto, Chrysologo Rocha de"
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- Smart system signalization prototype for flow control of people in crosswalksPublication . Oliveira Neto, Chrysologo Rocha de; Barbosa, José; Leitão, Paulo; Duarte, Luiz Fernando CaparrozBad lighting conditions on crosswalks is a common problem on the urban environment. This scenery entail a large number of pedestrians fatalities and it shows a demand for solutions able to ensure their safety using lighting resources. The present work proposes a crosswalk’s crossing process oriented by a system which is compound for a pair of Smart Devices that fit themselves in the Smart City idea. Inside this propose, they are capable to signalize for pedestrians the safe moment to enter on the crosswalk. These devices are a prototype of a system programmed in Python language and based in the Raspberry Pi and LoRa technologies. The work is split, mainly, on the hardware and software components development. In hardware level, it shows a circuit schematic design based on the Raspberry Pi Compute Module operating with the RFM95W LoRa module. In software level, it shows the incremental development of a Embedded System which reads inputs, gives lighting outputs and implements the communication, with encrypted messages, between the devices. Finally, this thesis shows a circuit schematic implementation wiled in KiCAD software and a embedded system focused in ensure well lighting and signalization on crosswalks. To validate the system are made hypothetical tests toward pedestrians behavior to cross the street on crosswalks.