The master’s Thesis describes development, construction, programming and operation of a data logger for recording the load electric current during the active
operation through automotive light sources (typically headlights, position lights,
fog lights, decoration lights). The data logger is a tool for capturing data about
the electric current, sudden transient current changes over time during the operation of automotive light source. Based on this, we analyze the appropriateness of
electrical energy consumption and the maintenance of a constant electric current
throughout the entire operating time. In accordance with automotive standards,
reliable operation is expected in certain time periods under various ambient operating conditions, without excessive changes in light and electric current on the
headlight or the occurrence of unexpected flickering of LEDs in the light source
due to the failure of other components. Since there is a need for constant refreshing of the electric current and detecting any unexpected drastic current changes
in a short time, data logger for recording data about the electric current, operating time, and operating status of automotive LED lighting was developed. To
demonstrate logger operation, a test measurement of the LED fog light is presented. It also allows connection to a computer, so the user has the ability to
capture data and view notifications of detected errors during and after the measurement, allowing diagnosing an electric current fault at any time during the
measurement. During the test measurements of the fog lights, the data logger
turned out to be a useful tool, as it was used to determine the lifetime of newly
developed LED fog light, which will fit into one of the BMW car model.
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