Test and diagnosis of electric circuitry by IR thermal imaging

A model of IR thermal diagnosis for electric circuitry was established. The temperature profile on the circuitry surface was measured by a thermal vid eo system. And then the inner metallic conductor's temperature was calculat ed through the developed model to find hidden troubles of malfunction and f ire in early stage. A model simulating the different running conditions of the circuitry was also developed to extend the application scope.