Smart Vehicle Safety Monitoring System Using CAN Protocol

In this contemporary era, automobiles have become an integral part of one’s life. The repercussions of which demand automobiles with enhanced security systems in order to indemnify against lethal fiascos. The presented work thus cites a system predicated on Controller Area Network (CAN) protocol, a communication protocol which extends an efficient and real-time solution for the transfer of information amongst nodes, harnessed to preclude failures in vehicles and assist the driver by providing apposite indications and messages.The system is a three node network comprising of an 8-bit, Master Synchronous Serial Port (MSSP) module supporting 3-wire SPI (all 4 modes) slave controllers (PIC18F4550) which forms a data acquisition system and the CAN bus facilitates efficient transfer of this acquired data to the 32-bit, SPI compliant master controller (ARM7 LPC2148). In order to interface these controllers to the CAN bus, these controllers require external CAN controllers (MCP2515) and CAN transceivers (MCP2551). The main objective of fabricating such a system being interchangeability of node controllers keeping the CAN bus network unperturbed. Also, one of the major advantages of establishing CAN communication is that it is resilient to electrical noise.