【Abstract】 The intelligent lighting control system in the building intelligent lighting project develops rapidly, which has two advantages of comfort and energy saving. The intelligent lighting control system is already in the rapid development stage of modularization, and now a better control scheme has become a bottleneck restricting the development of the system. Based on the study of intelligent lighting systems at home and abroad, the article puts forward four requirements for the design of lighting control schemes from the aspect of lighting energy saving: natural light compensation and energy saving, timing lights on and off work, light off N% during lunch breaks, and infrared sensing after get off work energy saving.
【Keywords】： intelligent lighting; architectural engineering; research prospect
1 Research Significance
The energy consumption of modern buildings is quite large. According to statistics, the energy consumption of buildings reaches 30% of the total energy consumption of the whole country, and the energy consumption of buildings is usually reflected in the energy consumption of building equipment. Among the energy consumption of building equipment, lighting and Office electricity consumption accounts for about 39% of building equipment electricity consumption. The shortcomings of traditional lighting control are very obvious. It is difficult to monitor all lighting in batches by the management room; the on-site control is not flexible enough. Intelligent lighting control system can use energy more efficiently and alleviate energy crisis.
2 Research status at home and abroad
In the past, due to high cost and difficult operation and maintenance, intelligent lighting systems were only used in some key projects and roads, vegetable greenhouses, stages and office buildings l3. It can be applied in occasions that require specific lighting scenes.
According to the operation examples of office buildings, the energy-saving effect can reach more than 20-50%. The energy-saving effect of general shopping malls, hotels, subway stations and other places can also reach 25-30%. At the same time, the service life of lamps can be extended by 2-3 times. For example, in 2012, Japanese Ono, Keiko, etc. used intelligent lighting systems to control office ceiling LED lamps, and measured actual energy savings of 60-80%. In 2013, Byun et al. used LED intelligent lighting system to simulate and control residential lighting in the laboratory, and the best experimental energy saving data was 21.9%.
The vast majority of domestic intelligent lighting control systems control objects are commercial lighting, such as: theaters, museums, street lights, etc. In 2013, Li Zhihua et al. designed a ZigBee-based LED intelligent lighting control system. The system achieved an error of 5% in the constant illuminance adaptive control test, but the efficiency of the LED drive and the fuzzy PID constant illuminance adaptive control were in the Improvements are still needed in terms of anti-disturbance and response speed.
3 Analysis of Intelligent Lighting System
3.1 Development Analysis of Intelligent Lighting
Today, when the intelligent lighting control system is modularized, the biggest difference between the intelligent lighting modules of major manufacturers lies in the design of the lighting system scene scheme. There are various types of buildings, and the needs of the owners are varied. How to extract the commonality in a targeted manner and design a control plan that meets the needs of most owners. Only one plan for each floor as much as possible can realize intelligence in the true sense. The following are some commonalities in the intelligent lighting module solution.
3.1.1 Natural light compensation for energy saving
From an energy-saving point of view, natural light should be used to the greatest extent possible. The intelligent lighting system intelligently adjusts the light intensity through the illuminance sensor installed on the window, as shown in Figure 1.
3.1.2 Timing switch lights on and off work
In the traditional mode, managers need to leave early every day, and one area after another is opened. The intelligent control system runs on time and fully automatically according to the pre-set procedures, and there is no labor cost.
3.1.3 Lights off during lunch break N%
During the lunch break, it is not necessary for employees to eat out. [Illuminance during operation, you can properly adjust the light intensity of the lamps or turn off some lamps. If the light is turned off by 50% during the lunch break as an example, and one hour of rest at noon every day, the average operation of each circuit will be reduced by O. 5 hours, each circuit runs 10 hours a day, and the actual power saving is 5%.
3.1.4 Infrared induction energy saving after get off work
According to the pre-set program, the system checks the status of all lighting circuits at regular intervals, and automatically closes the circuits that are not in use.