The Building Management System (BMS) is one of the main components of intelligent buildings. Through the BMS, intelligent buildings achieve comprehensive monitoring and management of equipment and the environment within the building or building complex. This system creates a comfortable, safe, economical, efficient, and convenient working and living environment for building occupants while optimizing equipment operation and management to reduce operational costs.

The BMS encompasses various aspects of a building, including electricity, lighting, air conditioning, ventilation, water supply and drainage, disaster prevention, security, and parking management. It is the subsystem with the broadest scope, the most complex design tasks, and the largest engineering workload in intelligent buildings. The BMS enables online monitoring of electrical equipment by setting up corresponding sensors, limit switches, and photoelectric controls to detect the working status of the equipment. These data are then transmitted back to the central computer in the control room, where they are analyzed. The results are subsequently sent back to the equipment terminal for adjustment.

The BMS aims to enhance the centralized monitoring and remote control of building equipment, thereby improving the management efficiency of buildings, reducing equipment failure rates, and lowering maintenance and operational costs.