Computer-aided Diagnosis System, Based On The Obd Ii Electronic Control Car

The fault diagnosis for electronic automobile is a puzzle faced to the present domestic automobile repair industry. In this paper, firstly, on the basis of the profound analysis of fault diagnostic system of the electronic automobile, we set the electronic automobile has been equipped with OBDII system as the research object, give out of the research result of OBDII system hardware communication and it diagnostic test mode. Then, on the basis of above, the BDII based computer auxiliary diagnostic system of the electronic automobile was explored and designed. In this paper, we give a detailed explaining of hardware design of the OBDII-PC interface, the software exploring of the data communication and analysis. This system will supply a new idea and beneficial reference for developing fault diagnosis expert system of electronic automobile.