Explanation of real estate terms: "3A" and "5A"

The so-called "3A" refers to the three basic elements of intelligent building intelligence, namely: office automation (OA), building automation (BA) and communication automation (CA); "5A", then It is to transform "FireAlarm" within the category of building automation (BA) into "fire automation (FA)", and to transform "security monitoring (CCTV)" into "security automation (SA)".

What needs to be emphasized is that "5A" is definitely different from "5 stars" in star-rated hotels. It is not a unit of measurement to measure the level of intelligence in a building. It does not mean that the more A's, the better. In fact, ?A? is an abstract noun and has not been recognized as a consistent metric by the international industry. Using the number of "A" as a measure of intelligence lacks theoretical basis, is not in line with international practice, and is not recognized by the international industry. In January 1996, the first "Ministry of Construction Intelligent Building Design Seminar" of the Ministry of Construction clearly pointed out that the core technical method to realize intelligent buildings is system integration. The degree of intelligence in an office building depends on the degree of organic combination and penetration of its three major elements, that is, the degree of system integration. Intelligent building system integration is not a simple collection of various products, but refers to a "capability". Therefore, intelligence should not be a simple superposition of several subsystems (so-called?A?) product equipment. Even when the number of subsystems is the same, the degree of intelligence is not the same due to different levels of system integration technology