Omnibus interior lighting system using LEDs and automotive communication network

• Autor(a) principal: Cervi,Murilo
• Data de Publicação: 2006
• Outros Autores: Pappis,Douglas, Campos,Alexandre, Prado,Ricardo Nederson do
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Sba: Controle & Automação Sociedade Brasileira de Automatica
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-17592006000200008
• topic: Automotive application; communication network; light emitting diode; lighting; microcontroller

This paper presents an intelligent lighting system for bus interior environment using LEDs (Light Emitting Diodes) controlled through an automotive communication network. The system consists of a master central control and slave lighting modules, using a LIN protocol (Local Interconnect Network) to perform communication. This network is a low cost alternative to the proposed system requirements, due to its low bit rate and physical needs. Each slave is an independent lighting module that supplies a group of LEDs and measures the environment lighting level. The master sets LEDs module parameters (slaves), such as the state (on/off) and desired lighting level. Besides, the master makes the user interface and establishes communication with other bus systems through a CAN (Controller Area Network) gateway. This paper presents a complete logical description, including block and state diagrams, a physical description and some relevant experimental results of the proposed system.