LED (Light Emitting Diode) illumination intelligent control system

Abstract

The invention relates to an LED (Light Emitting Diode) illumination intelligent control system which comprises a synchronous rectification unit used for providing direct-current power for at least two intelligent power control units, wherein the output end of each intelligent power control unit is connected with a corresponding LED light group unit via an electric wire; and the synchronous rectification unit is connected with each intelligent power control unit by a high-voltage direct-current bus. In the intelligent control system, stable constant-voltage direct current is provided for an LED illumination system by the synchronous rectification unit, so that the whole illumination system can operate under high power factor with less harmonic wave. the corresponding LED light group units are dynamically and precisely dimmed by the intelligent power control units, and the LED operation situation is detected in real time and communication with an external control center is carried out. The intelligent control system has the characteristic of reasonable structure, and is convenient to control, the working environment temperature of an LED light group can be improved, and the reliability and the service life of an LED illumination light can be improved.

Description

technical field [0001] The invention relates to an LED lighting intelligent control system, which belongs to the technical field of lighting power supply. Background technique [0002] As a new generation of lighting technology, LED has unique advantages such as energy saving, environmental protection, and high photoelectric efficiency, and is a typical green lighting source. [0003] Since the light attenuation of the LED chip is not only related to the attenuation of the packaging material and phosphor powder, but also the main reason is that the heat generated during the light emitting process of the LED chip makes the PN junction temperature of the LED chip rise. According to the temperature characteristic curve of the LED chip, The temperature rise reduces the maximum allowable operating current of the LED chip, so under the constant current drive, the light decay of the LED chip is increased and the life is shortened. Therefore, the current high-power lighting LED lamp...

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Problems solved by technology

[0003] Since the light attenuation of the LED chip is not only related to the attenuation of the packaging material and phosphor powder, but also the main reason is that the heat generated during the light emitting process of the LED chip makes the PN junction temperature of the LED chip rise. According to the temperature characteristic curve of the LED chip, The temperature rise reduces the maximum allowable operating current of the LED chip, so under the constant current drive, the light decay of the LED chip is increased and the life is shortened. Therefore, the current high-power lighting LED lamp is mainly composed of LED drive control power supply and LED lamp group. It mainly has the following problems: 1. The light decay of the LED chip is fast, and the luminous flux decreases significantly after a period of use

2. The service life is low and the reliability is poor, which is far from the theoretical service life of 100,000 hours

3. Since the service life of the LED driver chip is shorter than that of the LED light source chip, the labor and equipment operating costs incurred in replacing the LED driver are much higher than the value of the driver itself, and the maintenance and use costs are greatly increased

[0008] At present, most of the LED light group driving power used in the market is a driving power supply for each lamp with a mains AC to DC, and the overall structure of the LED light group, rectifier, and switching power supply driver is packaged together, and the temperature is the LED chip. One of the most important factors of light efficiency and lifespan, due to the large overall heat dissipation, the working environment temperature of the LED lamp group is in an abnormal state, so the allowable forward current will be greatly reduced, which will easily cause premature failure of the LED chip , or even directly damage the LED chip, which will have a great impact on the reliability and life of the LED lamp group

Secondly, because the LED lamp group and the driving power are integrated together, the volume is large, which is not convenient for lamp design and installation

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