Light emitting diode driving system with light signals carried via power lines

摘要

A light emitting diode driving system is applied to a light emitting diode lamp string, such that the light signal is carried through a power line to reduce the signal transmission lines. The light emitting diode driving system includes a switch unit, a control unit and a light signal generating unit. The switch unit includes a power input side, a power output side and a controlled side. The power output side is electrically connected to the light emitting diode lamp string. The control unit is electrically connected to the switch unit. The light signal generating unit is electrically connected to the control unit and the power output side. The light signal generating unit generates a light signal when the control unit turns off the switch unit. The light signal generating unit sends the light signal to the light emitting diode lamp string.

主权项

1. A light emitting diode driving system with light signals carried via power lines applied to a light emitting diode lamp string, the light emitting diode driving system comprising:
a switch unit comprising a power input side, a power output side and a controlled side, the power output side electrically connected to the light emitting diode lamp string; a control unit electrically connected to the switch unit; a light signal generating unit electrically connected to the control unit and the power output side; and a controlling side zener diode electrically connected to the control unit and supplying power to the control unit, wherein the controlling side zener diode, the switch unit and the light emitting diode lamp string are connected in series; the light signal generating unit generates the light signal when the control unit turns off the switch unit; the light signal generating unit sends the light signal to the light emitting diode lamp string.