摘要
针对基于PC的红外电路故障检测系统便携性差的缺点,提出了基于ARM11的便携式红外电路故障检测系统。异常电路板的热图像经红外CCD采集后,利用视频解码芯片TVP5150对热图像信号进行图像格式转换,再将热图像数据传至S3C6410核心处理器,采用图像处理算法对热图像进行图像处理,最后与标准的热图像对比并得到故障诊断结果。实验结果表明,该系统除了具有检测的高准确性和高精度性外,系统体积的大大减小和非接触性的检测使系统具备了更好的便携性和更高的安全性。
A portable infrared detection system for electronic circuit fault based on ARM11 is introduced.The thermal image of circuit board to be detected is captured by CCD camera.Then,the image format of the thermal image is transformed by TVP5150,which is used as a video decoder chip.The infrared image will be transported to core processor S3C6410,and the S3C6410 will deal with the thermal image by image processing algorithms.At last,the thermal image of circuit board to be detected will be compared with the thermal image of correct circuit board,and the differences between the two thermal images could come out.The results of experiment show that the detection system has characteristics of high accuracy,high precision and high stability.At the same time,system size is reduced,which makes the system have the better portability.The system could be applied for detecting electronic circuit fault non-intrusively,which make the system have the higher safety.
出处
《光电工程》
CAS
CSCD
北大核心
2011年第8期101-106,共6页
Opto-Electronic Engineering
