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Design of Vehicle Bus Data Acquisition and Fault Diagnosis System using CAN

Platform : EMBEDDED

IEEE Projects Years : 2012 - 13

Design of Vehicle Bus Data Acquisition and Fault Diagnosis System using CAN

 

                                              With the continuous development of industrial, automotive technology and electronics technology has also made great progress. The structure of vehicles become more complex, increasing the degree of automation is increasing, and the network of the body are also increasing in the major car manufacturers. This paper introduces the overall design of vehicle bus data acquisition and fault diagnosis system on the basis of OBD, focusing on its lower computer system and the upper computer system design principles. This system is based on the widely used CAN bus technology, to extract the vehicle's status or fault information. The increasing complexity of automotive electronic control system makes automotive fault diagnosis and maintenance work more difficult. In the way, we need more skilled technicians and more advanced device to detect and maintain fault. When the vehicle breaks down, it is usually far away from the repair site. So, it is useful for vehicle repairing to know its status timely. Hence SMS provides necessary technical support with vehicle status information or fault.

 

                                                            The system acquires and analyses the data from the CAN bus, which provides about 5-10 faults. The system displays the faults on the LCD screen in the way of the fault tree, so the users can check them easily. It can send data to the upper computer system or management center by SMS (GSM Technology), to view the vehicle status or fault information far away, and to achieve the remote monitoring of the vehicle and fault diagnosis. In automotive electronics, engine fault detect units, engine temperature sensors, air bag release-systems and battery low level detect system etc. are connected using CAN with bit rates up to 1 M bit/s. In the same year, the technology specification 2.0 versions, including 2.0A and 2.0B was proposed.

 

 

 

 



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