What's the difference between intelligent system and weak current system?

Intelligent system and security system belong to two systems, which do not contain each other, while weak current system can be approximately considered as the sum of intelligent system and security system, but it is not completely so.

In fact, in real life, these three systems are considered to be equivalent. In the eyes of China people, intelligent buildings are often said, so the corresponding systems are naturally intelligent systems, and intelligent communities and intelligent buildings must have security systems; In the eyes of foreigners, the security system is the security system, which only includes closed-circuit surveillance TV system, access control system and burglar alarm system, and is managed by the security department or the human resources department. For example, the integrated wiring system and broadband network system are all managed by IT (information technology) departments, not by security systems.

Although the differences between these three systems are defined and analyzed in detail, the author thinks that "intelligent system" and "security system" should be equivalent, and the intelligent system includes all weak current subsystems and security system subsystems.