Analysis of main obstacles in the promotion of intelligent lighting

We have been confused on the development of intelligent lighting products. Is there any other development path between systematic intelligent solutions and single-lamp intelligent solutions? The modular area intelligent solution proposed by Longview Optoelectronics is one of the attempts. It is especially suitable for places where large space is synchronized and dimmed, such as office space, stadiums, theaters, underground parking lots and some factory lighting. In the future development direction of LED lamps, especially in the development of office lighting products, we put forward some insights and concepts. In the field of intelligent lighting, a lot of dimming and color temperature are involved. We put forward the concept of balanced body illuminance, and in the product Used in the design.

First, why do you need intelligent lighting?

Through the intelligent control system, you can realize the beautiful scenes of imagination, make life more comfortable and beautiful, and at the same time play the role of low carbon, energy saving and environmental protection. The current intelligent control applications mainly include: LED outdoor scene intelligent control application, LED home scene intelligent control application, LED office environment intelligent control application. In the past few years, Longview has made some attempts in smart LED office lighting, and has done some projects in China and abroad. For example, the implementation of the National CPPCC Wenshi Museum intelligent lighting project in China, as well as the overall intelligent transformation of Shenzhen Hai Purui Pharmaceutical Co., Ltd. office building.

The existing mainstream control methods are basically based on system support, including controllers, bus structures, modules and intelligent lighting combinations, and dedicated buses including DALI/DSI/DMX are relatively mature and systematic lighting solutions. So, is there a third path beyond the single-lamp smart and systematic intelligent solution? We are also trying to find this third path.

However, there are several obstacles in the promotion of intelligent lighting: First, system support is required, and construction is difficult; second, system cost is relatively high, and most users are difficult to accept; third, professional technicians are required to debug.

Second, the modular area intelligent solution Longview proposed a modular area intelligent solution to solve regional lighting, or single-lamp intelligence, or system intelligence. For example, in an office environment, each switch usually controls not a single lamp, but a group of lights that are controlled as a partition or an illumination classification. At the same time, the concept of centralized power supply scheme was introduced in office lighting, which is also a relatively successful attempt.

1. Integration of lamps and light sources is beneficial to reduce costs and improve heat dissipation. The mature market of LED lamps is basically a substitute for the light source market. For example, many manufacturers now produce fluorescent tubes, bulbs, and LEDs as light source products. Consumers accept that the market will become more and more mature after the replacement of the market, and the amount will be very large, but as a simple alternative to the traditional light source, it can not play the full advantages of LED, according to the theoretical life of LED, it can be truly achieved. 50,000 hours. The life of the lamp housing and structural components may be shorter than the life of the light source, and the lamp housing may be broken earlier than the light source, so the integration of the lamp and the light source can save cost while improving the efficiency of heat dissipation. In the past few years, many of the single lamps used for office lighting have adopted the outer casing of aluminum alloy, and the light source and the light bar are directly attached thereto, and the heat dissipation is good and the structure is simple.

2. The power supply is a key component of the technology and cost of the luminaire. The highest technical content in the luminaire is the power supply, and the safety inspection is only related to the power supply (the power supply and the luminaire are separated). Therefore, after the driving power source and the luminaire are separated, different powers of different powers, different functions, and the same luminaire can be combined to form different products. In terms of cost, the driving power supply accounts for 30% to 40% of the total cost of the office grille lamp. Therefore, how to reduce the power supply cost is very important.

3. In business lighting, especially office lighting, a high-power power supply and multiple lighting combinations become the future development direction, such as: 1 drive 1, 1 drive 2, 1 drive 4, 1 drive 8, etc., such a structure Advantages: First, the economy is good, the power supply is higher, and the cost per watt is lower. Such as: 18W low-power power supply costs about 28 yuan (equivalent to 1.55 yuan / W), 600W power supply cost is only 390 yuan (equivalent to 0.65 yuan / W).

Second, the greater the power supply, the higher the life and reliability. The low power supply has poor heat dissipation and the electronic components are too compact, especially the electrolytic capacitor is afraid of heat.

Third, the greater the power supply, the higher the conversion efficiency. For example, the ordinary 20W low-power power supply usually has an efficiency of η≦80%, and a high-power power supply of 300W or more is usually η≧90%. There is still a 10% energy saving advantage between the two.

4. Advocate single-lamp and combined intelligent solutions and standardized module structure In the choice of intelligent lighting solutions, we advocate constant voltage power supply 24V or 48V output, and then directly connect an intelligent module, connect dimmers, combined sensors, Includes a dimming switch that implements some functions and then reconnects the smart luminaire. The concept of 48V is rare in China. Most of the products used in China are 12V to 24V. We especially recommend the 48V solution. Because there is an international DC home appliance alliance, the DC home appliance alliance recommends two voltage standards. One is DC350V, one is DC48V.

The current AC220V voltage standard was actually established more than 100 years ago. Based on the technical conditions at the time, the AC power supply scheme was proposed. Today, a large number of household appliances use DC, including air conditioners, TVs, and computers. First, the communication becomes DC, so now the DC appliance alliance especially emphasizes the future DC home, that is, DC350V and DC48V.DC350V are used for high-power appliances, such as air conditioners and washing machines. 48V is mainly used on some low-power appliances. Whether the LED lamp belongs to low power or high power is not sure, but because the power of the LED lamp itself is not too large, whether it is low power or high power, it should be selected to meet the standard voltage, which may be a future one. trend.

In addition, the photovoltaic power supply is also DC output, and their application will also be beneficial to the DC power supply scheme of the LED light. It can be used simply and at a very low cost.

Recently, in the space of the underground parking lot, attempts have been made to directly introduce photovoltaics into the ground, and the cost is reduced and the efficiency is relatively high.

Third, how to achieve intelligent office lighting Now intelligent lighting is a standard set in the late 1990s, when the wireless control program is not particularly popular. In fact, including WiFi, USB, Bluetooth technology can be used in smart lighting, including power supply manufacturers are doing different solutions to adapt to future wireless intelligent solutions. In fact, the smart module is built directly into the power supply, and the system becomes very complicated. At present, there are many types of power supplies, constant current, constant voltage, and WiFi. I believe that the power supply should be a simple power supply in the future. The technology of constant voltage power supply is very mature and the price is very cheap.

When wireless control is required, a wireless intelligent module can be externally connected and then converted into a small internal bus. This bus is based on the experience of the fire alarm system accumulated by Longview for more than 20 years. It is a non-carrier, baseband coded, low cost solution. There are hundreds of thousands of projects in use at home, the cost is very low, and lighting system applications can be used for reference in the future.

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