Prognostics and health monitoring of LED lighting system

Health monitoring of LED lighting systems is necessary for some safety critical and emergency applications. Prognostics and health monitoring (PHM) is a method for anomaly detection and remaining useful life (RUL) prediction. In this paper, the LED lighting system was defined as LED lamp which is composed of LED strings and an electrical driver. This paper introduced different PHM approach. An implementation prognostics and health monitoring roadmap for LED lamp was then presented. The PoF-based method for evaluating the reliability of LED driver was also demonstrated. Finally, data driven approach was used to assess the reliability and predict the remaining useful lifetime of LED lamp based on the test data during the sustaining natural exposure test.