Research Of The Technique Of Intelligent Lighting Detection Module Based On DALI Protocol

With the high-speed growth of applied science and technology, the human society is becoming more intelligent. With the development of modern building technology, intelligent lighting control technology appeared which a new direction for intelligent control technology development becomes. Intelligent lighting control technology based on the user’s personal preferences and the actual need, which make intelligent control come true automatically. In addition, there is a serious wastage of electrical energy in realistic society, such as office space or school, the officers left, lighting kept working, which leading to excessive use of energy. Therefore, the development of new intelligent lighting control technology is in response to the call of the national building energy-saving society, which improving the using convenient degrees of lighting equipment. It has profound and lasting significance.This article selects intelligent lighting control system which based on the DALI protocol and thermal infrared sensing technology and optical sensing technology as the research object, which has a detailed description of the relevant information and the standard DALI protocol, and sum up the sense of light control method based on DALI protocol. In the basis of research of technical links, designing each section of the system, which provides new ideas and methods for intelligent control system. The detailed method of research as follows:The DALI system consists of the master unit, the slave-controlled unit and data bus. In this design, the intelligent lighting system detection module which be researched is slave unit. According to the requirements of electrical characteristics of system, the operating voltage of DALI system is18V, and operating voltage of the MCU is5V.Therefore, basing on these requirements, there are two power supply modules in this design. Intelligent lighting detection module includes the infrared detection and the lighting detection module, which are used to capturing environmental information of the monitoring area timely and accurately, conversing the signal and transmitting it to the MCU, transmitting to master-controlled unit finally. As a result, the master unit sends the appropriate lighting brightness adjustment instruction to achieve intelligent and convenient lighting controlling. According to hardware constructing and software writing, completing the intelligent lighting control system protocol which contains intelligent lighting detection module that supporting DALI protocol finally.After debugging each module, all modules can attain the required function, and have some advantages such as easy, acute and convenient, which attain the desired expected target.