基于全速电流测试的印制电路板电路故障信息获取方法  

Non-intrusive fault information obtainment of printed circuit board based on at-speed current testing

作　　者：郭朝有[1] 欧阳光耀[1] 吴雄学[1] 

机构地区：[1]海军工程大学船舶与动力学院,湖北武汉430033

出　　处：《机电工程》2011年第10期1277-1280,共4页Journal of Mechanical & Electrical Engineering

摘　　要：针对当前印制电路板(PCB)非介入式故障诊断的需要,结合电源电流测试技术发展现状,提出了基于全速电流测试,通过向测试电路施加测试序列使被测电路处于静置和全功能状态交替工作,采集电源电流在若干个工作周期内的平均电流值以实现非介入PCB电路故障信息获取的新方法。ITC’97国际标准电路中的CTSV滤波器电路的全速电流测试仿真实验结果表明,该方法可完成PCB电路非介入的故障信息获取,有望实现印制电路板的非介入式故障诊断。For non-intrusive fault information obtainment of printed circuit board （PCB）, an new method based on at-speed current testing was presented. The circuit under at-speed current testing worked on two alternative states by applying two alternative vectors to the circuit. And the fault information was obtained by measuring the average current flowing from VDD to GND of the power supply for the circuit-under-test. SPICE simulation about a continuous-time state-variable filter circuit under the at-speed current testing, shows the feasibility of the at-speed current testing apply to the non-intrusive fauh information obtainment and the at-speed current testing has good application prospects among the non-intrusive fault of printed circuit board.

关 键 词：全速电流测试 印制电路板电路 非介入式 故障信息获取 故障诊断 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置] TM13[自动化与计算机技术—控制科学与工程]