LED smart office lighting future development trend

We have been ambiguous about the development of smart lighting products, and whether there are other development paths between system-based smart solutions and single-lamp intelligent solutions. The regional smart solution proposed by LifeView is one of them. It is especially suitable for large space synchro-shift places, such as office space, stadiums, theaters, underground parking, and some factory lighting. In the future development direction of LED lamps, especially in the development of office lighting products, we have put forward some insights and concepts. In the field of intelligent lighting, a large number of dimming and color temperature adjustments have been proposed. We have proposed the concept of a balanced somatosensory illumination, and Used in design.

First, why do you need smart lighting?

Through the intelligent control system can realize the beautiful scene imagined, make life more comfortable and beautiful, but also can play the role of low carbon, energy saving and environmental protection. The current intelligent control applications mainly include: LED outdoor scene intelligent control applications, LED home scene intelligent control applications, LED office environment intelligent control applications. Longview has made some attempts in intelligent LED office lighting in these years, and has done some projects at home and abroad. Such as the implementation of the National CPPCC Literature and History Museum intelligent lighting project, and the overall intelligent transformation of Shenzhen Haipurui Pharmaceutical Co., Ltd. office building.

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

But at present, the promotion of intelligent lighting mainly has several obstacles: First, the need for system support, construction is more difficult; second, the system cost is relatively high, most users find it difficult to accept; Third, the need for professional technical personnel to debug.

Second, the modular regional intelligent solution Longvision proposes a modular regional intelligence 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 light but a group of lights, and this group of lights is controlled as a partition or a lighting 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. Lamps and light sources integrate to reduce costs and improve heat dissipation. The current mature LED lighting market is basically an alternative light source market. For example, many manufacturers currently mass-produce fluorescent tubes, bulbs, and LEDs as light sources. Consumers will accept that after replacing the market will become more and more mature, and the amount will be very large, but simply as a simple alternative to traditional light sources, can not play the full advantages of LED, calculated according to the theoretical life of LED, will be able to really achieve 50,000 hours. The life of the lamp housing and structural parts may be shorter than the life of the light source. The lamp housing may be broken earlier than the light source. Therefore, the integration of the lamp and the light source can improve the efficiency of heat dissipation while saving costs. Many of the single lamps used by Longview in office lighting in recent years have adopted aluminum alloy housings, and the light sources and light bars are directly attached to the top, so 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 only relates to the power supply (the power supply is separated from the luminaire). Therefore, after the drive power source is separated from the luminaire, different combinations of different power, different functions, and the same luminaire can form different products. In terms of cost, the driving power source accounts for 30% to 40% of the total cost of the office grille lamp. Therefore, how to reduce the power cost is very important.

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

Second, the longer the power supply, the higher the lifetime and reliability. Low-power power supplies have poor heat dissipation and electronic components are too compact, especially electrolytic capacitors are afraid of heat.

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

4. Advocating single-lamp and combined smart 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 a smart module, connect the dimmer, combination sensor, Including the dimming switch, realize some functions and then connect the smart lamp. The concept of 48V is rare in China. Most domestic products are 12V to 24V. We especially recommend the 48V solution because there is now an international DC home appliance alliance. The DC Home Appliances 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 proposed at that time, AC power supply was used. Today, a large number of household appliances use DC, including air conditioners, televisions, and computers. First, the exchange of AC into DC, so now DC home appliance alliance special emphasis on future DC home, is DC350V and DC48V. DC350V is used for high-power electrical appliances, such as air conditioners and washing machines. 48V is mainly used in some low-power appliances. It is not sure whether the LED light will belong to low power or high power in the future, but because the power of the LED light itself is not too large, no matter whether it is a small power or a high power, the voltage that should meet the standard should be selected. This may be a future one. trend.

In addition, the photovoltaic power supply is also a direct current output, and their application will also benefit the LED lamp DC power supply scheme. It is very simple to use, and the cost is very low.

In the space of underground parking lots, recent attempts have been made to introduce photovoltaics directly into the ground. The cost has been reduced and the efficiency is relatively high.

Third, how to achieve intelligent office lighting Intelligent lighting is now the 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. The current types of power supply are many, constant current, constant voltage, with WiFi ... I believe that the future power supply should be a simple power supply, constant voltage power supply technology is very mature, and the price is very cheap.

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

1. Intelligent wired control scheme 3. Balanced somatosensory illuminance Intelligent module for adjusting color temperature In the office lighting field, Longview proposes a concept. In the past, the color temperature was basically the constant power color temperature. Two sets of LED light sources, one set of low color temperature, one set of high color temperature, and constant power when the color temperature changes. In fact, ensuring constant power will bring about a change in somatosensory illuminance, because at the same power, low color temperature will feel relatively dark, and office lighting and low color temperature will not be able to see clearly. We propose to balance the somatosensory illuminance. Under low color temperature conditions, the lamp power will be appropriately increased. Such an algorithm is already built into the luminaire.

Fourth, LifeView Optoelectronics smart office lighting solutions 1. Intelligent sensors, on-demand lighting application of information-type light source technology, to achieve communication between the lamp and the lamp. Some of Longview’s attempts in more than a year, including on-demand lighting in tunnel lighting and underground parking lot lighting, were illuminance when someone was present, and low brightness when no one was there.

2. Single-lamp, combination control intelligent applications The following is a smart application of the lamp, the lamp and the lamp are related, and does not add any lines, we directly replace the original lamp, each lamp has a Infrared sensors, when someone comes in, the infrared sensor works, the start light is on, at the same time, it is transmitted to the next light through the optical media or RF, and so on, a group of lights gradually light up. Now many of our projects are using this technology, especially for corridors in hotels, underground parking lots. We call it handshake and light transmission, and it is a very successful application.

3. Warm in winter and cool in summer, no one adjusts the brightness to adjust the temperature of the light according to the ambient temperature, and automatically adjust the indoor light environment to achieve "on-demand lighting" to reduce light waste and create a comfortable and comfortable indoor environment. If the summer is relatively hot, the color temperature of the light source can be as high as possible, and the body feels cool. In the winter, after wishing to go to the office, the light is relatively warm, making people feel warmer.