The research topic of the present diploma thesis is the induced electromagnetic immunity testing of vehicle headlights according to a standard ISO 11452-1, with the emphasis on Bulk Current Injection (BCI) and Stripline methods. The main hypothesis is to review and establish if the results of the mentioned methods are comparable enough to reduce the testing timing and costs in the preliminary development stages of the products. For this a systematic testing is performed, where five vehicle lights from different brands and models of vehicles are randomly chosen as test samples.
From the measurement results we can conclude that time and cost reduction during the preliminary testing is not possible, since the responses to different test methods turned out to vary significantly within the same frequency range. Furthermore, in some of the test samples, disturbances were expressed only when applying one of two test methods. However, in other cases the frequency responses of disturbances at both tests’ methods were comparable, but the light intensities were significantly different, which could be misleading in determining the final compliance verdict.
|
