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4c201w
Arduino: Conheça a solução inteligente para projetos em elevadores 5m245g
Por Newton C. Braga
Os recursos de automação dos
elevadores e sistemas associados exigem cada vez mais o uso de
microcontroladores. Seus recursos avançados e até de operação sem fio levam as
instalações que usam elevadores e um grau de sofisticação cada vez maior. O uso
de todos os recursos de microcontroladores, como o Arduino, é de grande
importância tanto para o profissional da manutenção como também para os que
desejam desenvolver novos produtos.
Uma palavra que está na boca de todos que
trabalham com tecnologia em nossos dias é IoT, ou Internet of Things (Internet
das Coisas). Objetos e tudo que usamos no nosso dia a dia estarão conectados à
internet no futuro. Na verdade, já está. Podemos acionar a fechadura de nossa
casa pelo celular, nossas câmeras de segurança e até nosso forno de microondas
se comunica com outros objetos usando redes sem fio.
O elevador também está se conectando à
internet e pode ir além com avançados que incluirão novos aplicativos. Na
verdade, um mundo de aplicativos que merece uma atenção especial quando
tratamos de mobilidade e utilização por humanos é o que está diretamente ligado
às pessoas com necessidades especiais.
Tudo isso significa que o profissional tanto
da manutenção, instalação, como do projeto de tudo que está relacionado com elevadores
deve estar preparado para entender as novas tecnologias usadas.
Figura 1 – Elevador de serviço controlado por Arduino
De sistemas de segurança, ibilidade,
reconhecimento biométrico e outros o profissional deve entender como as novas
tecnologias operam nisso tudo. Os microcontroladores já têm sido utilizados em
muitas aplicações relacionadas com os elevadores há muito tempo. No entanto, na
maioria dos casos são usados tipos específicos que tem fabricantes
proprietários.
Mas, o que está ocorrendo em
nossos dias é que existe uma infinidade de pequenos fabricantes que terceirizam
aplicações e que podem ser usadas juntamente com as aplicações dos grandes
fabricantes. Em especial temos os fabricantes de pequeno porte que se baseiam
em tecnologias íveis, como a do Arduino.
Esse pequeno microcontrolador que começou
como algo que deveria ser usado no ensino, se propagou, cresceu em recursos e
hoje temos uma grande variedade de tipos que são usados por pequenas indústrias
no desenvolvimento de produtos específicos.
Aplicações IoT, que incluem recursos que
podem ser agregados a uma aplicação predial, por exemplo, um elevador podem ser
facilmente ser elaborados com base em Arduino. Assim, para o profissional dessa
área conhecer a linguagem de programação, aprender a trabalhar com esse tipo de
microcontrolador pode abrir campos interessantes de atividades para se ganhar
dinheiro.
Hoje, navegando na Internet, encontraremos
uma grande quantidade de projetos experimentais, didáticos, e de maquetes com
elevadores justamente usando o Arduino. Esses projetos mostram que nos cursos
de automação industrial, predial e residencial a base para entender os
processos de funcionamento de elevadores está justamente neste tipo de
componente.
O que é o Arduino
Figura 2 – Arduino Uno
O controle de dispositivos de forma
inteligente se baseia em dispositivos eletrônicos denominados
microcontroladores. Diferentemente dos microprocessadores que processam sinais
realizando operação matemáticas, os microcontroladores, por outro lado, realizam
operações de controle de dispositivos externos a parir do processamento de
sinais que recebem de comandos ou sensores.
Existem diversos tipos de microcontroladores
populares, um deles é o Arduino, que possuem recursos para a ligação de muitos
sensores e podem comandar dispositivos de diversos tipos, quer seja
diretamente, quer seja usando shields.
Shields são placas adicionais que possuem
recursos para o controle de dispositivos de alta potência, quer seja
diretamente (semicondutores), quer seja através de relés. Esses shields podem
ser usados para controlar motores, solenoides, lâmpadas etc. Podem até
funcionar como contatores. Também existem os shields de comunicação que
possibilitam o o a redes WiFi, LoRa e aos sensores dos mais diversos graus
de sofisticação.
Figura 3 – Exemplo de elevador com Arduino
Aprender Arduino não é difícil e se você quer começar com início, aprendendo eletrônica, pode utilizar nossos livros, nossos artigos e nossos cursos a distância. Visite nosso site.
Sobre o autor
Newton C. Braga
é autor de centenas de livros sobre eletrônica e proprietário do Instituto
Newton C. Braga que mantem cursos à distância e um site com mais de 30 000
artigos técnicos em: www.newtoncbraga.com.br
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