LED lighting intelligent control development status and trend

It is understood that Philips's proportion of intelligent lighting research and development in 2015 will be as high as 95%. Then, if we agree with Philips' strategy, we can't help but ask how Chinese enterprises will design in the key areas of competition in this industry. How to deal with the future in this field is not subject to the patents of international manufacturers?

Intelligent LED lighting system and sensing technology

Professor Yan Chongguang from the Shanghai Institute of Microelectronics, Peking University, gave a report titled "Intelligent LED Lighting System and Sensing Technology". He pointed out that in most cases, people often say that the intelligent lighting control system refers to the indoor lighting control system. The sensor is an important part of intelligent lighting. In the report, he summed up the system composition of intelligent lighting control, and sensor + MCU + control execution + LED = intelligent lighting. It mainly describes the concept, function, classification of sensors and their application and case analysis in intelligent lighting.

Professor Yan Chongguang divided the sensors into four categories: pyroelectric infrared sensors, ultrasonic sensors, Hall sensors, and photosensitive sensors. He mainly explained the infrared sensor in detail, elaborated on each step of the infrared self-control LED energy-saving lamp system design and the application of the infrared sensor, including: infrared sensor LED light and infrared intrusion detector, bedroom infrared automatic control switch system , building infrared sensing automatic control switch system. "In the case of a human body induction LED downlight , a pyroelectric infrared sensor is used to detect the infrared radiation of the moving human body. As long as the human body crosses the detection range, the ambient illumination is lower than the set activation illumination. Light up, if you feel the human body will repeat the delay during lighting, turn off the light after the delay is over; and set the ambient illumination sensor, the user can choose the desired lighting illuminance to determine whether the light works when the environment is dark or bright."

LEDs need intelligent system coordination to subvert traditional lighting concepts

Duan Jingyuan from the Institute of Semiconductors of the Chinese Academy of Sciences in the report entitled "LED Lighting Intelligent Control Application Demand Analysis and Major Technical Difficulties" clearly stated: "LED is not a traditional light, it needs an intelligent system to match its potential, subverting the concept of traditional lighting. ."

He said: LED lights make our world more energy efficient, and the combination of LED light communication and control methods may be more convenient and greener. The LED light can transmit the modulated signal through the light transmission network signal and the control signal to complete the transmission of information and instructions. In addition to connecting to the network, LED lights can also act as commanders for a variety of household appliances.

In particular, building lighting is the most important part of the application market; he said that the building's energy consumption is very high, and some countries in Europe and the United States have developed intelligent lighting systems for this purpose, using lighting control systems to better reflect their energy saving and Management advantages.

For the future of intelligent lighting control, he said that LED should not be limited to the function of lighting. LED itself has very convenient modulation and control characteristics. Based on this feature, it can be used as a smart hub to concentrate various control information. Together. At the same time, in terms of health, according to the theory that different light colors have different effects on human health, LEDs are expected to gather more application value and achieve more functions. “LED lighting is like a Porsche. It can be as fast as a tractor on a country muddy road. But if we build a road and sell it to the user with Porsche, it will make the user feel more convenient and Enjoy.” He believes that LEDs can only be combined with intelligent controls to maximize the characteristics and advantages of LED lighting, replacing traditional lighting.

Discussion on the future trend of intelligent office lighting

Chen Yuhong of Guangdong Langshi Optoelectronic Technology Co., Ltd. mentioned in the report "Investigation on the Future Trend of Intelligent Office Lighting" that at present, there are three main obstacles to the promotion of intelligent lighting applications. First, it requires complex system support, which is difficult to construct. Second, the cost is too high. High, most users are more difficult to accept; third is the need for professional and technical personnel to debug. At the same time, he mentioned that Longview Optoelectronics has also put forward its own opinions on smart office lighting solutions, such as intelligent sensing and on-demand lighting: when no one is automatically adjusted to a slightly bright state, when someone is intelligently lit; The temperature adjusts the light and warmth of the light, automatically adjusts the indoor light-sensing environment, realizes “on-demand lighting” to reduce light waste, and creates a comfortable and comfortable indoor environment. In summer, the light source is automatically adjusted to a cool color, which makes people feel cool; the winter light source is automatically adjusted to a warm color, which makes people feel warm.

Research and development of LED intelligent control system standards

Li Zili of Guangdong Lighting Society said in the report "Development and Formulation of LED Intelligent Control System Standards" that intelligent lighting and lighting systems are classified into non-universal lamps and intelligent lighting systems and versatile products and intelligent lighting systems according to their versatility. Among them, the versatile products and the intelligent lighting system between the enterprises and the intelligent lighting system can replace each other, the technology is more complicated, for the convenience and versatility, the instruction definition, format and process for unifying various functions are specified. In the case of LED street lamp centralized DC power supply intelligent lighting system, the LED street lamp centralized power supply intelligent control system adopts a microcomputer controller to detect the power source in real time, and simultaneously connects the real-time remote signal, telemetry and remote control through the communication with the host system.

Finally, Dr. Guo Cheng, National Key Laboratory of Semiconductor Lighting Joint Innovation, said in the book entitled “Development and Practice of Intelligent Control”: What is the purpose of intelligent control of semiconductor lighting? One is to save costs for users and production companies, and the other is to provide users with an irreplaceable function. At the same time, what is the trend of LED intelligent control development? "Intelligent control is the integration of display, lighting and communication functions, especially with the Internet, especially mobile internet. In the future, we will consider more how lighting control is integrated with mobile internet."

Progress of the State Key Laboratory in Intelligent Management System

Dr. Guo Cheng also introduced the progress of the State Key Laboratory in the intelligent management system of LED street lights. He said that the National Key Laboratory of Semiconductor Lighting Joint Innovation has developed an intelligent LED street light management system that can control individual street lights and meet the requirements of city-level street lighting control. Each city needs its own business card. The LED street light system has high display performance. It is an important part of smart cities and Internet of Things. It can enhance government property and municipal management capabilities. Lighting is shifting from traditional management methods to intelligent management methods. Past field maintenance and troubleshooting to remote monitoring, from paper media management methods to intelligent, electronic property management. Intelligentization is the development direction of the current city. With the change of demand, various new applications will be gradually introduced.

Later, Guo Cheng also highlighted the development trend of scene lighting. For example, a large international company has begun to integrate various functions of communication, sensing and computing in the bulb. At the same time, the national key laboratory also used LED lighting applications. In the development of some additional features such as "parking guidelines".

Afterwards, everyone agreed in the positive interactions that the biggest advantage of LED is its controllability. The full expression of LED lighting energy-saving concept, the realization of digitalization and the value-added outside of lighting are inseparable from the support of intelligent control system. At the same time, the intelligent control system can completely eliminate the ambiguity of traditional lighting definition and promote the transformation of the green lighting industry. Especially for some LED enterprises with long-term strategy, the intelligent control field of LED lighting means more realizing the core competitiveness of enterprises and getting rid of the “blue ocean” of market “homogeneous” competition and price war.