With the rapid development of intelligent lighting technology, DALI digital dimmable technology came into being. However, DALI dimmable technology is still widely used in traditional buildings and offices, and has not been promoted in food production workshops. The main reason is that the food production workshop has high technological requirements for lamps, and at the same time, there are few lamps on the market that can meet the technological requirements of the food workshop and support the DALI protocol. With the continuous development of DALI technology and its successful application in traditional office buildings, coupled with the increasing emphasis on energy conservation and emission reduction by countries and enterprises, the promotion of DALI digital dimming technology in factory workshops is imperative.

The layout of dairy industrial plants is complex, among which the joint workshop is the most representative, which has the characteristics of large area, high ceiling, many functional rooms, different cleanliness levels, and many lighting application scenarios.

Taking the filling unit of a joint workshop of a liquid milk factory in Yili as an example, the construction area of a single filling room is about 900m2, the ceiling height is 9-10m, and the equipment, pipe racks and bridges of different heights are arranged in the room. In order to utilize natural light as much as possible and save energy, the side walls and the top are provided with natural lighting. The operating status of the equipment is roughly divided into running, stopping, cleaning, and overhauling. Considering the expansion factor of the factory, it is generally necessary to set up reserved spaces in different process sections of the pre-processing unit. These spaces are not placed in the early stage of the factory operation. The factory runs 7×24 hours continuously.

Based on the above characteristics, our use of traditional loop control, schedule control, personnel presence control, illumination control, and automatic combined with manual control schemes no longer meet the actual needs of use, and cannot achieve the most ideal energy-saving effect. This brings challenges to the scheme design. How to use the limited investment to meet the usage requirements and achieve at least 10% energy saving is the problem we solve in the scheme design stage.