IoT Based Distributed Control System Using CAN

Industrial automation systems play a crucial role in controlling several process- related operations. Due to the implementation of a wide variety of industrial networks with their geographical distribution over industry, the floor data transferring and controlling capability has become more sophisticated and the need for a reliable, fast, high level communication network arises which can be satisfied by Controller Area Network. Our proposed system implements the CAN protocol in Industrial Automation. In this system, a single node consists of various sensors which monitors and provides process variables to ATmega328 Microcontroller. This is then connected to a CAN controller which exchanges data with ATmega328 Microcontrollers using serial peripheral interface. CAN controller does the process of control, error management and bit stream conversion. This serial data is connected to the CAN transceiver for the CAN bus establishment. Many such nodes are connected to the CAN bus. On the other end of the bus, the master NXPlpc1768 which has inbuilt CAN ports receive and control the datas and process variables from the nodes by using CAN protocol. This master NXPlpc1768 is improvised with the inclusion of IoT which uses internet connectivity by using ethernet shield that sends datas and process variables from the remote location of the industry to the user at any geographical area.