Data Procurement System Using Controller Area Network In Automobile Industry

In order to reduce point to point wiring complexity in automobiles, Controller Area Network is suggested as a means for data communication within the subsystems in vehicles. The most important factor of CAN bus is that nodes can be added or removed at any time so that it offers increased flexibility and expandability. This paper describes the ARM7 based design and implementation of CAN communication for data acquisition system. It focuses on hardware design of CAN node. Hardware interface mainly consists of LPC2148 microcontroller from ARM 7 family, MCP2551 stand-alone CAN controller and MCP2515 CAN transceiver. The communication is implemented via an industry standard Serial Peripheral Interface (SPI) with data rates up to 5 Mb/s. Temperature sensor, Pressure sensor and Fuel sensor are used as the data collection agents and the collected data is displayed in a Personal computer for    database management