As people's requirements for car personalization and comfort gradually increase, the color-changing full-color car interior atmosphere lights have gradually become a new trend. LEDs used in automobiles are much more demanding than ordinary LEDs in terms of service life and reliability. With the advent of automotive-grade RGB single-package LEDs, the design of RGB ambient lights has become more flexible, using three R, G, B different colors of automotive-grade LED particles, saving more limited space in the car, and more uniform light mixing. At the same time, the automotive interior backlight and its ambient light have high requirements for color and brightness consistency. Because the installation position and operating temperature of the ambient light are different, the color or brightness change of any one of the RGB will cause the final mixed color and The brightness changes, so the control of color consistency becomes a difficult application of the RGB atmosphere lamp. Based on the basic principle of RGB light mixing and the characteristics of LED, this paper discusses the color consistency control method of RGB car ambient light based on temperature detection feedback.
The basic principle of RGB mixed light
When the three primary colors of the LED are mixed, the principle of mixed light addition is followed. As shown in FIG. 1, in the case where the spectral distribution or color coordinates of the RGB three-color LED light source participating in the light mixing are determined, any color within the triangle surrounded by the three points can be mixed. The color after light mixing is determined by the relative proportion of the luminous flux of the three primary colors of RGB, and the total brightness of the mixed light is equal to the sum of the luminous fluxes of the three primary colors. Since the light intensity distributions of the different colors of the RGB three-color LEDs are substantially the same, the conversion coefficient between the luminous flux and the luminous intensity in the normal vector direction of the light-emitting surface is the same. The luminous intensity of each color can be used instead of the luminous flux when performing the mixed light calculation.
Figure 1 RGB mixed area
Assume that the color coordinates of RGB three colors are: (x1, y1), (x2, y2), (x3, y3), and the luminous intensities of the participating mixed LEDs are: Y1, Y2, Y3, and the color coordinates after mixing are : (x, y), the luminous intensity after light mixing is: Y. then:
The main function of the Home Energy Storage System is to store the electricity generated by the solar panels in the home photovoltaic power generation system, so as to continue to supply electricity at night, cloudy days, or when the electricity demand exceeds the supply of the solar panels. It is an energy storage solution for improving the self-sufficiency and energy efficiency of home photovoltaic power generation systems.
Main effect:
Energy Storage: The Home Energy Storage System uses batteries to store excess electricity generated by the home's photovoltaic power generation system. When solar panels generate more power than the household needs, the excess power is stored in the battery to continue supplying power when needed.
Power supply backup: At night, on cloudy days or when the power generated by solar panels is insufficient, the Home Energy Storage System can use the stored power to continue to supply power to ensure the continuity and stability of household power consumption.
Energy balance: The Home Energy Storage System helps to balance the energy difference between the electricity generated by the home photovoltaic system and the electricity demanded, thereby optimizing energy management and maximizing self-sufficiency.
Differences from other energy storage systems:
Power source: The power source of the Home Energy Storage System is the Solar Panel of the home photovoltaic power generation system, which directly generates electricity by converting sunlight. While other energy storage systems may come from other renewable energy sources, such as wind energy, hydro energy, or non-renewable energy sources, such as grid electricity.
Renewable: The Home Energy Storage System uses solar energy as a power source and is a renewable energy system. Other energy storage systems may utilize different types of energy sources, with varying degrees of renewability.
Application Scenario: Home Energy Storage System is mainly used in home photovoltaic power generation systems, especially in conjunction with solar panels. Other energy storage systems can be used in different energy generation systems, selected according to specific energy sources and application requirements.
Overall, the main function of the Home Energy Storage System is to store the electricity generated by the solar panels for continued supply of electricity at night, on cloudy days, or when the home's electricity demand exceeds the supply of the solar panels. Compared with other energy storage systems, it uses solar energy as a power source, is a renewable energy system, and is mainly used in household photovoltaic power generation systems to improve energy utilization efficiency and self-sufficiency.
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