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Authors
Abstract(s)
Os capacetes de bicicleta são a forma mais eficiente de reduzir os danos na cabeça causados por acidentes envolvendo ciclistas. Entretanto, muitos usuários evitam usá-los por considerarem, entre outros motivos, o equipamento desconfortável termicamente. As camadas de proteção dificultam a perda de calor em ambientes quentes e as aberturas de ventilação fazem com que a perda de calor seja exagerada em condições de baixa temperatura. A presente dissertação consiste em uma proposta para solucionar essa barreira de uso e colaborar para que estes equipamentos se tornem versáteis e confortáveis em diferentes situações. Um mecanismo de palhetas rotativas foi desenvolvido para ser impresso através de fabrico aditivo (prototipagem rápida) e atuar juntamente com um sistema eletrônico, controlado por um microcontrolador ESP32. Este é responsável por identificar a temperatura sob o capacete, através da utilização de um sensor termistor, e acionar um servomotor, alterando o posicionamento das palhetas, liberando ou restringindo a entrada de ar. Consiste em um trabalho essencialmente teórico, tendo em vista que a ocorrência da pandemia causada pelo Covid-19 impediu a realização do trabalho experimental, que permitiria validar o projeto. Contudo, conclui-se que o mecanismo proposto parece exequível e aplicável em capacetes já existentes ou adequáveis a novos modelos.
Bicycle helmets are the most efficient way to reduce head damage caused by accidents involving cyclists. However, many users avoid using them because they consider, among other reasons, the equipment thermally uncomfortable. The protective layers make heat loss difficult in hot environments and the ventilation openings cause heat loss to be exaggerated in low temperature conditions. This dissertation consists of a proposal to solve this barrier of use and collaborate so that this equipment becomes versatile and comfortable in different situations. A rotary vane mechanism was developed to be printed through additive manufacturing (rapid prototyping) and to act together with an electronic system, controlled by an ESP32 microcontroller. This is responsible for identifying the temperature under the helmet, using a thermistor sensor, and activating a servomotor, changing the position of the vanes, releasing or restricting the air intake. It consists of essentially theoretical work, considering that the occurrence of the pandemic caused by Covid-19 prevented the experimental work, which would allow the project to be validated. However, it is concluded that the proposed mechanism seems feasible and applicable to existing helmets or suitable for new models.
Bicycle helmets are the most efficient way to reduce head damage caused by accidents involving cyclists. However, many users avoid using them because they consider, among other reasons, the equipment thermally uncomfortable. The protective layers make heat loss difficult in hot environments and the ventilation openings cause heat loss to be exaggerated in low temperature conditions. This dissertation consists of a proposal to solve this barrier of use and collaborate so that this equipment becomes versatile and comfortable in different situations. A rotary vane mechanism was developed to be printed through additive manufacturing (rapid prototyping) and to act together with an electronic system, controlled by an ESP32 microcontroller. This is responsible for identifying the temperature under the helmet, using a thermistor sensor, and activating a servomotor, changing the position of the vanes, releasing or restricting the air intake. It consists of essentially theoretical work, considering that the occurrence of the pandemic caused by Covid-19 prevented the experimental work, which would allow the project to be validated. However, it is concluded that the proposed mechanism seems feasible and applicable to existing helmets or suitable for new models.
Description
Mestrado de dupla diplomação com a UTFPR - Universidade Tecnológica Federal do Paraná
Keywords
Capacetes Bicicletas Conforto térmico Smart helmet