Design Of Intelligent Lighting System Based On Multi - Protocol

With the development of economic and social progress, people are no longer satisfied with the traditional way of lighting, and to pursue a more convenient, more comfortable lighting ambience; and the traditional way of lighting is giant, it is contrary to conservation and low-carbon. LED is the fourth generation of green lighting, controllable, energy saving and environmental protection. Therefore, LED intelligent lighting system that based on the forefront of technology like computer network, sensor and electronic communication is gradually into people’s lives. Detailed analysis of DALI and DMX512 protocol and combination of gateway technology, designed a multi-protocol intelligent LED lighting systems, and design hardware and software. Provide a new ideas and direction of intelligent lighting system.Analyze the historical and current development situation of intelligent lighting system, and then bring a LED intelligent lighting system that bases on multi-protocol. And analyze the purpose or significance of this research. This paper describes the DALI protocol and DMX512 protocol, focuses on their system architecture, protocol frame format, the electrical characteristics. The working principle and embedded gateway, LED drivers are described in detail. The paper introduces the system’s structure, the design of the target. And give a detailed hardware and software design. The system include the MCU and its peripheral circuit, DALI interface circuit, DMX512 interface circuit, human-computer interaction circuit, LED drive circuit and three kinds of sensor circuits. Various modules cooperate with each other to achieve the program what is expected to function.Under the premise of the greatest reflect of the system function, the system consist of DALI controller, DMX512 controller and gateway control module.After the system hardware and software debugging, that the system is able to achieve the intended purpose, the DALI controller can indirect control the DMX512 controller, and it has some practical and design reference value.