The concept of “green energy saving†is to select high-quality and energy-saving lighting products with high luminous efficiency, and then control the lighting system through advanced green lighting control methods, thus creating a lighting environment with reasonable functions, economical application and energy conservation.
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This paper discusses and learns related issues of lighting control systems based on the perspective of non-professional technology. It aims to have a more comprehensive understanding of the lighting control system.
With the development of 4C technology, industrial automation control has also advanced by leaps and bounds, and green lighting control has also ushered in more technical support or challenges. How advanced technologies can be effectively combined and applied to green lighting projects has become the focus of attention.
1 Computer control system is the technical basis of green lighting control
Four types of computer control (1) DDC direct digital control (DirectDigitalControl);
(2) DCS decentralized control system;
(3) FCS fieldbus technology. The fieldbus standard has developed a series of standards, the latest version is IEC61158-6-20 (released in 2007), a total of 20 fieldbuses have joined the standard;
(4) PLC programmable logic controller and programmable controller (ProgrammableLogicController) and (ProgrammableControllerSystem).
Computer control systems are used in a wide range of applications, and we use lighting management projects to start with the Building Management System (BMS).
It is familiar to us that his subsystem building automation (BA) already contains control of the lighting, which is Direct Digital Control (DDC). Through this control, the different loops of the lighting control box can be switched and controlled, but the dimming control cannot be performed. The (BA) system or the more advanced (BMS) system is complicated to operate, and requires professional operation to adapt to it. A variety of lighting equipment, multi-level lighting scenes and Other needs, so the need to develop specialized lighting control systems based on advanced computer control technology.
2 Existing mature lighting control system
The fieldbus system's dispersibility, openness, interoperability, environmental adaptability, economical use, easy maintenance, reliability and many other advantages make its application range expand rapidly, and the corresponding products are very rich, and it is also used in the application of lighting control systems. There are already many mature products based on fieldbus or similar technology. E.g:
(1) DALI system (DigitalAddressableLightingInterface);
(2) X-10 power line carrier bus technology has achieved great commercial success in North America;
(3) The full name of HBS is the Home Bus System (HomeBusSystem);
(4) Dynet is a closed control bus protocol for Dynalite for lighting systems;
(5) C-Bus, short for ClipsalBus, is the bus protocol of Clipsal;
(6) ABBi-bus intelligent installation system;
(7) The T-bus bus is a two-wire network based on the EIB (European Installation Bus) standard;
(8) HDL-BUS building intelligent control system facilitates access to Ethernet;
(9) DMX512 is a traditional stage lighting control protocol, proposed by the United States Institute for Theater Technology (Inc) in August 1986, a standard that can transmit 512 thyristor dimming information on a pair of lines. Developed as a way to control the dimmer from a console using a standard digital interface. The Bird's Nest red LED lighting is transmitted to the fiber-optic bus using the DMX512 signal, and the signal is converted and uploaded to a proprietary video control system for light performance. 
