LED (Light Emitting Diode) project lamp intelligent illumination control system

Abstract

The invention discloses an LED (Light Emitting Diode) project lamp intelligent illumination control system, which comprises a synchronous rectification unit which is used for providing a direct current power source for at least two intelligent power source control units, and a light intensity sensor which is used for providing light intensity information for the intelligent power source control units, wherein the light intensity sensor is electrically connected with the intelligent power source control units; the output end of each intelligent power source control unit is connected with a corresponding LED (Light Emitting Diode) lamp bank unit by a wire; the synchronous rectification unit is connected with each intelligent power source control unit by a high-voltage direct current bus. According to the LED project lamp intelligent illumination control system, the work environment temperature of an LED lamp bank is improved, the thermal radiation caused to the LED lamp bank by a power device can be reduced, and since the environment temperature of the LED lamp bank can be greatly reduced, the reliability and the service life of the LED lamp bank can be improved and prolonged. The LED project lamp intelligent illumination control system is mounted in a split mode, the installation is convenient, the maintenance probability is greatly reduced, and the maintenance cost is saved.

Description

technical field [0001] The invention relates to the technical field of lighting, in particular to an intelligent lighting control system for LED floodlights. Background technique [0002] Due to the advantages of energy saving, longevity, and environmental protection, LED lights have an increasing share in the lighting market. The application range of LED lights is also becoming wider and wider, and LED floodlights are one of them. 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. Th...

AI Technical Summary

Problems solved by technology

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

[0003] Most of the driving power supplies for LED floodlights currently on the market are equipped with a mains AC-to-DC driving power supply for each lamp, and the LED lamp group, rectifier, and switching power supply driver are packaged together. The temperature is the LED One of the most important factors of chip 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 is very easy to cause premature failure of the LED chip. Failure, or even direct damage to the LED chip, will have a great impact on the reliability and life of the LED light set

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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