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Publication
Sistema de Controlo de Nivelamento de Autocaravana
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 65.65 MB | Adobe PDF |
Authors
Abstract(s)
O objetivo principal da dissertação reside na modernização de um sistema de nivelamento
hidráulico de uma autocaravana. As autocaravanas são bastante úteis na
medida em que permitem uma grande flexibilidade de planeamento de itinerários.
No entanto apresenta frequentemente limitações ao nível do nivelamento, tornando
várias tarefas do quotidiano mais difíceis de executar. O presente trabalho endereça
parcialmente estas limitações propondo uma solução elétrica/eletrónica para o
controlo de um sistema de nivelamento hidráulico. O sistema existente constituído
por quatro cilindros hidráulicos era controlado remotamente a partir de uma aplicação
móvel através de Bluetooth, que deixou de estar disponível online. Desta forma,
pretende-se reformular toda a arquitetura de modo a reativar o controlo remoto, melhorar
a fluidez de movimento dos cilindros e implementar nivelamento totalmente
automático.
A nova arquitetura baseia-se num microcontrolador Arduino que faz a gestão de
uma placa de circuito impresso desenhada especialmente para o projeto, que utiliza
MOSFETs para proceder à comutação das nove válvulas do circuito hidráulico.
Um sensor de nivelamento foi também integrado no sistema de modo a fornecer
dados relevantes ao algoritmo de nivelamento automático. Por fim, foi também
desenvolvida uma nova aplicação para proceder ao controlo remoto de todo o sistema.
O sistema foi implementado primeiramente num protótipo de modo a validar
o software desenvolvido e parte do hardware, e por fim validado com sucesso na
autocaravana, demonstrando o controlo desejado do sistema hidráulico. Os testes
aplicados permitiram validar os vários objetivos propostos neste projeto, bem como
corrigir alguns atrasos que não foram detetados na implementação do protótipo.
Esta proposta, que inclui a possibilidade de nivelamento automático, mostrou-se
uma mais valia na utilização deste tipo de veículos.
The main goal of this dissertation is to modernize a motorhome’s hydraulic leveling system. Motorhomes are quite useful as they allow for great flexibility in itinerary planning. However, they often present limitations in terms of leveling, making several everyday tasks more difficult to perform. This work partially addresses these limitations by proposing an electrical/electronic solution for controlling a hydraulic leveling system. The existing system, consisting of four hydraulic cylinders, was remotely controlled via a mobile app via Bluetooth, which was no longer available online. Therefore, the aim is to redesign the entire architecture to reactivate the remote control, improve the fluidity of the cylinders’ movement and implement fully automatic leveling. The new architecture is based on an Arduino microcontroller that manages a printed circuit board designed specifically for this project, which uses MOSFETs to switch the nine valves in the hydraulic circuit. A leveling sensor was also integrated into the system to provide relevant data to the automatic leveling algorithm. Furthermore, a new application was developed to remotely control the entire system. The system was initially implemented in a prototype to validate the developed software and some of the hardware. It was then successfully validated in a motorhome, demonstrating the desired control of the hydraulic system. The tests validated the various objectives proposed in this project, as well as corrected some delays that were not detected during the prototype implementation. This approach, which includes the possibility of automatic leveling, proved to be an added value for this type of vehicle.
The main goal of this dissertation is to modernize a motorhome’s hydraulic leveling system. Motorhomes are quite useful as they allow for great flexibility in itinerary planning. However, they often present limitations in terms of leveling, making several everyday tasks more difficult to perform. This work partially addresses these limitations by proposing an electrical/electronic solution for controlling a hydraulic leveling system. The existing system, consisting of four hydraulic cylinders, was remotely controlled via a mobile app via Bluetooth, which was no longer available online. Therefore, the aim is to redesign the entire architecture to reactivate the remote control, improve the fluidity of the cylinders’ movement and implement fully automatic leveling. The new architecture is based on an Arduino microcontroller that manages a printed circuit board designed specifically for this project, which uses MOSFETs to switch the nine valves in the hydraulic circuit. A leveling sensor was also integrated into the system to provide relevant data to the automatic leveling algorithm. Furthermore, a new application was developed to remotely control the entire system. The system was initially implemented in a prototype to validate the developed software and some of the hardware. It was then successfully validated in a motorhome, demonstrating the desired control of the hydraulic system. The tests validated the various objectives proposed in this project, as well as corrected some delays that were not detected during the prototype implementation. This approach, which includes the possibility of automatic leveling, proved to be an added value for this type of vehicle.
Description
Keywords
Leveling Control Motorhome Hydraulic System Arduino Bluetooth Automatic Leveling Controlo Nivelamento Autocaravana Sistema Hidráulico Arduino Nivelamento Automático
Pedagogical Context
Citation
Publisher
CC License
Without CC licence