Currently, light-emitting diodes have been used in car and truck headlights. LEDs used in the past for auxiliary lighting functions such as daytime running lights, taillights or flashing lights are now increasingly being used for low beam and high beam. Unlike traditional halogen bulbs, LED lighting requires a more sophisticated electronic control system to cover all lighting functions. Continental is a leader in the development of such systems. The new lighting control unit is rapidly leading the transformation of automotive lighting systems to achieve a clearer view and improved safety. The new electronic control system for passenger cars and commercial vehicles has been confirmed for production date.
Take advantage of LED technology LEDs have a number of advantages over bulbs or xenon headlamps. In addition to facilitating designers to develop lamps with unique shapes, LEDs are also characterized by high efficiency and long service life, with lower energy consumption, impact resistance and no maintenance.
However, in order to take full advantage of the advantages of light-emitting diodes, electronic control devices must be used. This is because, unlike conventional light bulbs, LEDs cannot be powered directly from the vehicle's power supply voltage. Therefore, it is necessary to monitor the vehicle power supply voltage by using an electronic device. The electronic control device uses pulse width modulation to control the light intensity. If the LED is used solely for signal lights, such as flash, width or taillights, there is relatively no problem. However, since LEDs are also used in active steering headlamps, a large number of new tuning tasks must be handled by electronic control devices.
To this end, Continental has introduced innovative lighting control devices that centrally control all lighting functions. The first phase of the development of the electronic device can adjust the brightness of eight kinds of lights. Each LED group can be individually controlled to adjust the light and shade according to the road conditions, without the need for other mechanical devices to change, making it superior to any previous method, even the most sophisticated mechanical systems can not achieve this effect. Dedicated lighting for highways or country roads, softly changing far and near light, excellent illumination curves, or expanding intersection visibility - Continental's light regulators support all of these functions in less than a second, thus Great flexibility for the design of designers and safety engineers.
Launched in 2011 - with broad market prospects as one of the most advanced systems on the market, Continental's new control unit has been well received by automakers. The two major European manufacturers decided to put them into production in 2011, which is a strong proof. Currently, other ordering items are under negotiation. Continental has become a leader in this fast-growing market. Analysts believe that not only is the number of LEDs in the car growing at an alarming rate - more than the 800 mark is just around the corner - and the speed of the headlamps is also growing at a fairly fast pace. The analyst firm predicts that it will grow at a rate of 150% in the next three years.
Dr. Tran Quoc Khanh, Professor of the Department of Lighting Engineering at the Technical University of Darmstadt, Germany, said: "The significant advantage of LEDs is that their lifetime is higher than that of conventional headlamps. Halogen bulbs can last up to 1,000 hours. It reaches 2,000 hours, while LEDs exceed 10,000 hours. The advantages of LEDs are also reflected in energy efficiency. “Also in automotive lighting projects, high-output LEDs are extremely energy efficient and environmentally friendly. This is due to their long life and high illumination efficiency – and is expected to increase to 150 lm/W in the next few years. Good controllability."
Tightly networked LED control electronics Continental is one of the few manufacturers on the market to fully integrate lighting control units into automotive data flow systems. This control unit communicates with the vehicle's central control electronics via LIN and CAN, and can process information such as received vehicle speed, steering angle, driver lighting requirements, and read light and rain sensor data. In addition, the electronic unit is modular in structure and can be easily adjusted for different applications in all types of vehicles.
In addition to intelligent electronic functions, Continental's lighting control unit also has a number of physical advantages. In a compact form factor of a pocket calculator, the control unit integrates up to four control systems, saving the car manufacturer valuable space in the front of the car. Unlike similar control systems, Continental's solution is not to integrate it in the lampshade, but to be externally attached as a separate component. In this way, when the headlight cover glass is damaged, the control device can continue to be used, which helps to reduce the insurance level and maintenance cost. Instead, the electronics can be replaced without changing the headlights. More importantly, this system can withstand the extremely high temperatures of the engine compartment. Like the engine management system, Continental's cost-optimized lighting control electronics are extremely robust and virtually immune to temperature changes. In the past, designing LED headlamps was a sleek design for many of the technical details of automakers. It is a “flashy†electronic device, and now LEDs work side by side with the engine.
These lighting functions, first equipped with ordinary headlights, only mark the beginning. Next, Continental's developers will develop matrix headlight control features that help to design a more personalized headlight styling. On the asphalt road, the left and right turn signals of the navigation system can be in the form of a headlight projection signal. Alternatively, the system can trigger a spotlight to detect pedestrians on the shoulders ahead. It is undeniable that the emergence of such headlamp systems will take several years, but at least on the basis of such functions, it will help Continental to introduce new control devices.
With the development of these aspects of the lamp system, the application field of LED technology is developing towards passenger car compartments. With more than 20 years of experience in mass production of related products, Continental has become the market leader in automotive dashboard LED technology applications.
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