Malfunction Diagnosis Method of I2C Bus based on Traffic Video Collection Card

This paper analyzed the work principle of traffic video collection card and its different kinds of faults perhaps happened. The general method of fault diagnosis is given. On the basis of it, with inducing and analyzing the I2C bus fault possibly caused by the elements of pull-up resistor in the peripheral circuit of traffic video collection cards, one of the useful methods of fault diagnosis has been presented, and it has some real instructional significance.