Illumination driving power supply controlling device and system

Abstract

The invention discloses an illumination driving power supply control device which includes a zero-crossing detection unit for performing the zero-crossing detection on an input commercial power waveform. A power supply main control module sends corresponding command signals to a voltage detection module and a sequential module, obtains a power supply period according to a zero crossing signal, and controls the on-off of a power switch module in a pre-set fixed work period. The voltage detection module carries out the voltage detection and feeds a voltage detection command finishing signal back to the power supply main control module. The sequential module carries out timing and feeds a timing command finishing signal to the power supply main control module. The power switch module responds the control of the power supply main control module, and correspondingly outputs and stops outputting the stable power supply waveform. The invention also discloses an illumination driving power supply control system. The illumination driving power supply control device and system work in the pre-set work period when an LED light source is driven, the output power is stable, and the light source flicker is eliminated.

Description

technical field [0001] The invention belongs to the technical field of LED lighting, and in particular relates to a lighting driving power supply control device and system. Background technique [0002] Currently widely used DC light-emitting diodes (DCLEDs), if they are to be powered by the mains, an AC-to-DC rectifier must be added. The complicated AC-DC conversion will easily cause additional material costs and energy conversion losses. With the development of intelligent lighting technology, the industry has developed high-voltage LEDs (HVLEDs) directly driven by alternating current, which can greatly improve the energy utilization and luminous efficiency of LED lighting systems. Therefore, in the field of intelligent lighting, alternating current directly drives LEDs. Will become the leader of intelligent lighting. [0003] The inventors of the present invention have found through research that during the continuous application of the existing AC direct drive LED drivi...

AI Technical Summary

Problems solved by technology

[0003] The inventors of the present invention have found through research that during the continuous application of the existing AC direct drive LED driving method in the field of intelligent lighting, due to the presence of phase-shifting devices such as silicon controlled rectifiers or Components whose waveforms change, so the linear output voltage and current waveforms will change. For details, please refer to figure 1 The schematic diagram of the mains waveform is shown, figure 2 The schematic diagram of the voltage waveform after the waveform shown is changed, image 3 The schematic diagram of the current waveform after the waveform is changed; and the change of the linear output voltage and current waveform will make the output power unstable. When the frequency of the unstable output power reaches the frequency range that the human eye can recognize, it will cause the human eye to see The LED light source is flickering, which affects the comfort of the lighting environment and causes discomfort to the human eye

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