【摘要】 分析了交通视频采集卡工作原理及其可能出现的各种故障,给出了故障诊断的一般工作方法。在此基础上,重点对交通视频采集卡外围电路中的上拉电阻因素可能引起的I2C总线故障进行了归纳分析,提出了一种有效的故障诊断方法,对相关设备检测有一定的实际指导意义。更多还原

【Abstract】 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.更多还原