基于磁場成像的PCB故障診斷技術(shù)

本文通過對印制電路板(PCB)近場輻射模型的描述和建立，簡要介紹PCB 近場磁場輻射的
自動測試和基于射頻磁場分布映像的PCB 故障診斷技術(shù)。作為一種無接觸式測試診斷技術(shù)，它對電路板具有無損性，測試更為安全可靠,且成本費用低，診斷能力強，有著廣泛的發(fā)展前途。
[關(guān)鍵字] 磁場輻射 自動測試 故障診斷
[Abstract] With the description and establishment of radiated magnetic-field model close to
printed circuit board (PCB), this paper presents an automatic test system on magnetic-field
radiation close to PCB. A fault diagnostic technology based on radiated magnetic-field image
is also presented. As a “touch unnecessarily” test method, it does little damage to circuit
board, and makes PCB testing more safe and low-cost. It will be used widely in future for
its powerful capability of diagnose.
[Keywords] magnetic-field radiation, automatic test, fault diagnostic