Light emitting diode driving system with carrier signal control

摘要

A rectifier rectifies an alternating current power to obtain a direct current power. The rectifier sends the direct current power to a driving power and carrier signal generation apparatus. The driving power and carrier signal generation apparatus generates a driving power. The driving power and carrier signal generation apparatus sends the driving power through a transmission line to at least a light emitting diode driving apparatus to drive at least a light emitting diode. The driving power and carrier signal generation apparatus generates a carrier signal. The driving power and carrier signal generation apparatus sends the carrier signal through the transmission line to the light emitting diode driving apparatuses. The light emitting diode driving apparatuses drive the light emitting diodes according to the carrier signals.

主权项

1. A light emitting diode driving system, the light emitting diode driving system applied to a rectifier and at least a light emitting diode, the light emitting diode driving system comprising:
a driving power and carrier signal generation apparatus electrically connected to the rectifier; a transmission line electrically connected to the driving power and carrier signal generation apparatus; and a plurality of light emitting diode driving apparatuses electrically connected to the transmission line, the driving power and carrier signal generation apparatus and the light emitting diodes, wherein the rectifier rectifies an alternating current power to obtain a direct current power; the rectifier sends the direct current power to the driving power and carrier signal generation apparatus; the driving power and carrier signal generation apparatus generates a driving power; the driving power and carrier signal generation apparatus sends the driving power through the transmission line to the light emitting diode driving apparatuses to drive the light emitting diodes; wherein the driving power and carrier signal generation apparatus generates a carrier signal; the driving power and carrier signal generation apparatus sends the carrier signal through the transmission line to the light emitting diode driving apparatuses; each of the light emitting diode driving apparatuses receives the carrier signal from the transmission line and drives the light emitting diodes according to the carrier signal, wherein the light emitting diode driving apparatus comprises: a power positive terminal electrically connected to the driving power and carrier signal generation apparatus; a voltage regulator electrically connected to the power positive terminal; a power negative terminal electrically connected to the voltage regulator; a signal detector electrically connected to the power positive terminal; an identification control logic circuit electrically connected to the voltage regulator, the power negative terminal and the signal detector; a counting and shift-registering circuit electrically connected to the voltage regulator, the power negative terminal and the identification control logic circuit; a light changing control circuit electrically connected to the voltage regulator, the power negative terminal and the counting and shift-registering circuit, the light changing control circuit configured to determine colors and intensities of the light emitting diodes; a comparison circuit electrically connected to the identification control logic circuit; an address memory unit electrically connected to the comparison circuit; an address register electrically connected to the identification control logic circuit; an oscillator electrically connected to the voltage regulator, the power negative terminal, the identification control logic circuit and the light changing control circuit; a driving current control circuit electrically connected to the voltage regulator, the power negative terminal and the light changing control circuit; and at least a driving current output circuit electrically connected to the driving current control circuit and the light emitting diodes, wherein the signal detector detects the carrier signal and then the signal detector informs the identification control logic circuit; then the identification control logic circuit, the comparison circuit, the address memory unit and the address register are configured to control and process a circuit logic and then the counting and shift-registering circuit informs the light changing control circuit; then the light changing control circuit is configured to determine the colors and the intensities of the light emitting diodes and then the light changing control circuit informs the driving current control circuit; then the driving current control circuit is configured to control the driving current output circuit to drive the light emitting diodes.