The system integration of intelligent building is to integrate the separated equipment, subsystems, functions and information in intelligent building into a unified and coordinated system, so as to realize the reorganization and sharing of information, resources and tasks. The characteristics of intelligent building, such as safety, comfort, convenience, energy saving and labor cost saving, can only be realized by integrated intelligent building system.
2) Energy saving
Take the modern commercial building as an example, its air conditioning and lighting system consumes a lot of energy, accounting for about 70% of the total energy consumption of the building. On the premise of meeting the environmental requirements of users, intelligent buildings should make use of natural light and atmospheric cold (or heat) as much as possible, and adjust the indoor environment through their "intelligence" to minimize energy consumption. It has become the basic function of intelligent buildings to distinguish "working" and "non-working" time according to the procedures determined in the calendar in advance, implement different standards of indoor environment automatic control, and automatically reduce the indoor illuminance and temperature and humidity control standards after work. Adopting the latest technology in air conditioning and control industry to save energy to the maximum extent is one of the main characteristics of intelligent buildings, and its economy is also an important reason for the rapid popularization of this kind of buildings.
3) Save the labor cost of operation and maintenance.
According to the statistics of American Architectural Association, the life cycle of a building is 60 years, and the maintenance and operation cost within 60 years after opening is about three times the construction cost. According to Japanese statistics, management fees, utilities, gas fees, mechanical equipment and elevator maintenance fees account for about 60% of the operating expenses of the whole building; And its cost will increase by 4% every year. Therefore, relying on the intelligent management function of intelligent system can play a role in reducing the maintenance cost of mechanical and electrical equipment. At the same time, due to the high integration of the system, the operation and management of the system are also highly centralized, the personnel arrangement is more reasonable, and the labor cost is minimized.
4) Safe, comfortable and convenient environment
Intelligent building first ensures the high safety of people, money and things, and has the ability to respond to disasters and emergencies quickly. Intelligent buildings provide suitable indoor temperature, humidity and fresh air, multimedia audio-visual system, decorative lighting, public background music and so on. It can greatly improve people's quality of work, study and life. Intelligent building provides an efficient and convenient working, learning and living environment for people through modern communication means such as telephone, television, computer local area network and Internet and various network-based office automation systems.