摘要
由边界扫描和非边界扫描器件组成的非完全边界扫描电路板普遍存在,其故障检测与隔离是板级维修测试的难题。基于边界扫描和数字I/O的测试方法无法完成整板功能测试,提出了一种基于功能建模的含FPGA电路板测试方法。首先在FPGA开发环境中生成VITAL模型,实现其功能建模;然后将配置文件和VITAL格式数据导入LASAR,完成电路板的好板仿真和故障仿真,并生成后处理文件;最后在ATE上调用后处理文件,实现含FPGA电路板的自动测试和故障诊断。该方法无需更改测试系统软硬件,可实现该类电路板的功能测试。
Non-boundary scan circuit boards composed of the boundary scan and non-boundary scan devices are ubiquitous,and their fault detection and isolation is a puzzle for board-level maintenance and testing.Test methods based on boundary scan and digital I/O can not fulfill functional test of entire circuit board.A functional modeling based method is put forward for FPGA circuit board testing.First,VITAL model is generated in FPGA development environment,achieving its functional modeling;then VITAL format configuration files and data are imported into LASAR,realizing circuit board simulation and fault simulation,and generating postprocessing documents;finally,postprocessing documents are input into ATE,and the automated testing and fault diagnosis of FPGA board is implemented.This method does not change the hardware and software of test system,and can achieve functional test of such circuit boards.
出处
《宇航计测技术》
CSCD
2011年第1期30-34,共5页
Journal of Astronautic Metrology and Measurement
