Green lighting solar-based HBLED lighting solutions

Introduction

In the past fifteen years, energy demand has increased tenfold and energy costs have quadrupled. Power outages and power cuts have occurred in the United States and other countries, and this situation will continue to worsen as energy demand grows and energy production cannot be maintained. According to the latest report from North American Electric Reliability Corp, it is estimated that in the next decade alone, the US electricity demand will increase by 141,000 megawatts, while the new resources confirmed in the same period are only 57,000 megawatts. This resulted in a gap of 84,000 megawatts, equivalent to the total power generation of 160 large power plants.

According to the US Energy Information Administration, power generation (mostly supplying power to lighting applications) produces 37% of greenhouse gases, so we should start looking for alternative energy sources such as solar energy. Solar energy is a green technology and costs no as much as hydropower, geothermal or nuclear energy.

In the 21st century, up to 300 million households in developing countries lack adequate lighting.

The reasons may vary, but may include purchasing power (too high cost), lack of infrastructure, and imbalance between supply and demand. Many families use homemade kerosene lamps

Or candle for lighting. These dim, yellow, black smoke sources are very hazardous and not environmentally friendly. In the long run, they cost more than bright, white, solar-powered, high-brightness light-emitting diode (HBLED) sources.

Why choose HBLED for lighting?

Longer life

LEDs are longer than any other source and have a lifetime of more than a decade in many applications. They contain solid-state technology similar to that used in the latest microprocessors. These solid-state devices have no moving parts, no fragile glass, no mercury, no harmful gases, no filaments. There are no things that can be broken, broken, shattered, leaked or contaminated. Unlike typical conventional light sources, LEDs do not suddenly fail or burn out. The LED Light Source does not suddenly stop working at any time, but the LED performance will gradually decrease over time. It is predicted that the average brightness of most LEDs after 50,000 hours of operation will still be 70% of the initial brightness. For example, in an application environment where the light source is used for 12 hours per day for 365 days per year, the system that has been used for more than eleven years has only 30% attenuation of the initial luminance output (70% lumen maintenance).

Table 1 Comparison of light sources

Figure 1 LED lighting development map

Reduce maintenance costs

Since the LED-based light source lasts ten times longer than a conventional light source and does not require frequent replacement, it reduces or even eliminates daily maintenance costs and periodic replacement costs. This is especially important in critical, modulated lighting applications such as buoys, beacon lights, emergency exit lighting, backup lighting, and security lighting, which typically require periodic lamp replacement.

More energy efficient

LED light sources are more efficient than incandescent lamps and most tungsten halogen lamps. White LEDs can provide more than 20 luminous flux units per watt and are expected to reach more than 50 luminous flux units per watt in the future. When choosing solid state lighting as an alternative to lighting, the overall benefits of the system level must be considered. For example, due to the superior luminous flux performance per watt, LEDs used in building lighting systems consume less energy per hour than competing sources, making them more environmentally friendly and more cost effective.

LED advantages

Reliable (100,000 hours) - reduced maintenance costs

?; more energy efficient - green, cost-effective solution

?; momentary on and fully dimmable, no color change - pulse width modulation (PWM) control

?; no mercury - in line with environmental regulations

Low voltage DC operation - no high voltage connection required

How solar-powered LED lighting works

Figure 2 is a block diagram illustrating the implementation of a solar-based LED illumination.

The solar panel converts the solar energy into a voltage that is then stored in the battery. Freescale 8-bit HCS08QG4/8 microcontrollers (MCUs) with two-channel, 16-bit timers are used for battery charging and monitoring to drive LEDs. The PWM is used for battery charging and the analog to digital converter (ADC) is used to monitor the battery voltage. If the voltage drops below 50% of full charge, the brightness of the LED is automatically reduced to 50% by changing the duty cycle of the alternate PWM channel. The goal is to provide longer duration illumination, even if the brightness is reduced. If the battery voltage drops to 10%, the MCU will turn off the LED to ensure that the battery will not be completely drained.

Figure 2 Solar-based LED lighting

Choose the right microcontroller

There are several options for choosing an MCU for solar-powered LED applications. The HCS08QG4/8 devices combine the required features with great price at a very competitive price.

The MC9S08QG8/4 extends the benefits of the Freescale HCS08 core to low pin count, small package options. The QG device is a low voltage device with an on-chip on-line flash programmable voltage as low as 1.8V. It includes all the standard features of the HCS08 MCU, such as standby mode, multiple stop mode, powerful emulation, a complete set of serial modules, temperature sensors and powerful memory options.

Table 2 Characteristics of MC9S08QG8/4

16-pin DIP/TSSOP/QFN

application

Solar-powered HBLED lighting can be used for street lighting, home lighting, emergency lights and country lighting.

Traffic lights are turned on day and night in most cities, and street lighting is turned on most of the day. A solution that uses HBLED technology instead of traditional halogen or energy-saving lamps (CFLs) can achieve significant savings in energy and maintenance costs

The International Finance Corporation (IFC) is a private investment arm of the World Bank Group's “Land of Illuminated Pyramids” project, which plans to sell solar-powered LED lighting systems to 1.6 billion people around the world who are not connected to the grid. Due to the lack of electrical lighting, many of them and their businesses have instead relied on carbon fuels (such as kerosene) to meet their lighting needs. By using solar and LED lighting at these locations, we can reduce health hazards and greenhouse gas emissions associated with fossil fuel combustion.

Final description of energy savings

In 2006, China was the second largest power consumer in the world, consuming a total of 2.475 billion kWh of electricity, 12% of which was used for lighting. By 2020, if the LED efficiency reaches 150 lm/W, even if it only penetrates 30% of the Chinese market, the annual energy savings will reach 200 billion kWh.

in conclusion

LED lighting technology is a far-reaching, quantifiable alternative energy solution that saves energy and costs, providing a low maintenance cost solution for a variety of lighting applications. Because electricity is used much less than many traditional lighting methods, LEDs can help improve the environment by reducing power generation and its corresponding greenhouse gas emissions.

We are White Through-hole LED manufacturer from China.

5 years warranty

Those White Through-Hole LED was born for excellent lighting effects.

Need some really bright LEDs? Contact us now!

White Through-hole LED. It is the light produced by the blue color chip which is transformed by the special LED fluorescent powder. It does not have a fixed wavelength range and value, which meas White LED need the coordinate value of X, Y and color temperature to represent it. The difference of White SMD LED and the white Through-hole LED is the diversification of the angle, diffusivity and spotlight. In 18 years, we supply the white Through-hole LED with high efficiency, high luminance, low light attenuation has been recognized by our customers.

1, Color is wide enough to suit every one's needs and taste: White Through-hole LED typical color temperature is 2000K warm Yellow LED , 2700K warm white LED, 3000K warm white LED, 4000K white LED, 5000K white LED, 6000K white LED, 7000K cold White LED, the maximum color temperature can reach above 50000K color temperature. White Through-hole LED  has been widely in the indoor lighting and outdoor lighting because of good heat dissipation, low light failure, high brightness.

2, High color purity: We can supply White Through-hole LED with high index white LED (Ra> 80), common index white LED (Ra less than 80) and super high index white LED (Ra> 90) LED. Common index white LED used in conventional lighting or electronic components.  high index white LED used in lighting or fill light products. Remarkable LED lamp beads made of the product's realism will be greatly enhanced. The light produced by the High rendering index LED will make the things more vivid. We can also customize low SDCM (Color Tolerance Adjustment ) products to meet the high requirements of the customer.

3,  Colorful epoxy: Water clear, white diffused, pale white diffused.

4, Variety of angle available: 5 degree through-hole LED, 20 degree through-hole LED, 30 degree through-hole LED, 40 degree through-hole LED, 45 degree through-hole LED, 60 degree through-hole LED, 90 degree through-hole LED, 120 degree through-hole LED, 140 degree through-hole LED ect.

5,  Variety of shape/size available: We supply the white SMD LED , such as:  Round through-hole LED, Straw hat through-hole LED, flat top through-hole, Ellipse throuh-hole LED, 3mm Through-hole LED, 5mm Through-hole LED, 8mm Through-hole LED, Rectangle Through-hole LED(2*3*4 Through-hole LED), Square Through-hole LED and so on.

6, The length of pin: LED Lamp's pin can be 17mm, 29mm, 90 degrees bent feet, braided pin and so on. Tips: taping pins can operate on a robot, greatly improving the efficiency of manual plug-ins.

We will do the High temperature resistance testing and 10 hours ageing treatment before the product out off the factory, which can ensure the stability of each product. Our LED products have 5 year warranty. Please believe that we are the best supplier for your  light-emitting diode.

White Through-hole LED

White Through-Hole LED,3Mm White Through-Hole LED,Rectangular White Through-Hole LED,5mm White Through-Hole LED,5mm White LED,3mm White LED

Shenzhen Best LED Opto-electronic Co.,Ltd , http://www.bestsmd.com