Weak current intelligence

Professional weak current intelligence is mainly aimed at buildings, including buildings, residential areas, airports, docks, railways, highways and so on. The common working voltages of weak current systems are: 24VAC, 16.5VAC, 12VDC, and sometimes 220VAC is also considered as a weak current system. For example, the working voltage of some cameras is 220VAC, so we can't classify them as high-voltage systems.

According to the national design code "Building Intelligent Design Standard" (GB503 14-20 15), intelligent systems are divided into six systems:

Intelligent integrated system (IIS)

Information facilities system (ITSI) Information technology system infrastructure

Information technology application system (ITAS)

Building equipment management system (BMS) Building management system

Public safety system

Electronic equipment factory project

Each of the above categories includes different subsystems. According to the type and function of the building, the subsystems contained in the intelligent system are different.

Common 30 weak current systems include: ccTV monitoring system, burglar alarm system, entrance guard system, electronic patrol system, parking lot management system, visual intercom system, home intelligence system and security system, background music system, LED display system, plasma splicing screen system, DLP large screen system, three-meter CC system, building automation system, lightning protection and grounding system, paging intercom system and professional intercom system. Weak current piping system, UPS uninterruptible power supply system, computer room system, integrated wiring system, computer local area network system, property management system, multifunctional conference room system, cable TV system, satellite TV system, satellite communication system, fire fighting system, telephone communication system, hotel management system, video-on-demand system, human resource management system, etc.

Building weak current systems can be generally divided into three categories, namely, communication automation system (CA), office automation system (OA) and building automation system (BA), which are collectively referred to as 3A systems. However, due to many special regulations on the management of fire-fighting automation system (FA-fire-fighting automation system) and security automation system (SA-security automation system), FA and SA systems are sometimes separated from BA systems, and weak current systems in buildings are divided into five categories, namely CA, OA, BA, FA and SA, which are collectively referred to as 5A systems. In fact, no matter how the whole system is divided, it should be specific to each subsystem when it comes to engineering design and integration.