| Abstract |
In existing installations, series-connected light switches or dimmers typically lack a neutral wire connectionat the light switch lead-out. Hence, it is a challenging issue to design and power wall-mountedcontrol terminals for smart LED lighting systems, which are not battery operated. Based on the resultsof [1, 2], this paper addresses the described problem and demonstrates an advanced control device fullycompliant with the 'Digital Load-Side Transmission' (DLT) standard [3]. In addition to a user interfacewith a liquid crystal display (LCD), this DLT control device provides two wireless links, namely WiFiand ZigBee, enabling external control from wireless devices. Besides brightness, color and color temperatureadjustment, the presented control device also features group control and commissioning of attachedluminaires. Standby power is minimized by featuring the so-called 'power controlled off state' of theDLT standard. The developed control device unites the advantages of low standby power consumption,compatibility to wiring in existing installations and accessibility with wireless controls. To the best ofthe authors knowledge, this is the first robustly tested DLT control device with such a high amount ofversatility and functionality. |
