基于STC89C52的汽车灯具诊断电压监控装置

Auto Lighting Diagnostic Voltage of Monitoring Device Based on STC89C52

文章设计并制作基于STC89C52单片机的汽车灯具诊断引脚输出电压监控装置,其系统使用LMV331SE-7电压比较器,并结合单片机外部中断及定时器功能,实时监控汽车灯具可靠性试验中诊断引脚的输出电压情况,从而确认灯具的工作状态,保证汽车灯具试验的有效性。该装置结构简单,且成本低廉,可有效降低汽车灯具可靠性试验中的人工及设备成本。

This article introduces a kind of the auto lighting diagnostic voltage monitoring device based on the STC89C52 has been designed and made.By using the LMV331SE-7 voltage comparator and the external interrupt and timer function of the STC89C52 single chip microcomputer,the output pin diagnostic voltage of auto lighting is detected in real time to confirm lamp working status during the auto lighting reliability verification test,which ensures the effectiveness of auto lighting test.The device has simple structure and low cost,and can effectively reduce the labor and equipment costs in the reliability test of auto lighting.