Microcontroller based temperature and luminosity control system using CAN Bus

Industrial environment consists of more than one controlling/monitoring modules built around microcontrollers which may not belong to same family. Considering the need of communication between different microcontrollers in such situations “Microcontroller based temperature and luminosity control system using CAN bus” is designed to demonstrate the same. Controller Area Network (CAN) protocol is used to achieve long distance communication. It was developed to support applications like real time control system. It is ideally suited for many rugged applications like automotive applications. The paper describes the advantages of CAN communication and hardware designing of each node. The system is designed with one master and two slaves, where the master sets the parameter values of both the slaves and the slave set its respective parameters accordingly. At the slave side there is control action module to maintain the set value. The communication between the master and the slave takes place via CAN bus. Security of system is very important when it comes to dealing with some parameters in industry. So a fingerprint identification module is employed in the system.