What is building automation?

Building automation refers to electrical equipment in buildings, such as elevators, pumps, fans, air conditioners, etc. Its main working property is strong electric drive. Usually, these devices are in an open working state, that is, they do not form a closed loop. As long as the power supply is connected, the equipment is working. As for the working status, progress and energy consumption, it is impossible to get the data online in time, let alone use and save energy reasonably. At present, building automation is to monitor the above-mentioned electrical equipment online, and detect the working state of the equipment by setting corresponding sensors, travel switches and photoelectric controls. , and through the line back to the central computer in the control room, the computer will get the analysis results, and then back to the equipment terminal for mediation.

Intelligent building is the product of the combination of architectural technology and computer information technology, which meets the needs of information society and economic internationalization. Intelligent building is mainly composed of three systems: building automation control system (BAS), communication automation system (CAS) and office automation system (OAS). Intelligent building often starts with building automation control system. There are a large number of electrical equipment in intelligent buildings, such as air conditioning equipment, lighting equipment, water supply and drainage system equipment, etc., which are scattered: many, that is, there are many objects for control, monitoring and measurement, up to hundreds to tens of thousands of points; Decentralization means that these devices are scattered at all levels and in all corners. If decentralized management is adopted, local control, monitoring and measurement are unimaginable. In order to make rational use of equipment, save energy and manpower, and ensure the safe operation of equipment, it is natural to put forward how to strengthen the management of equipment.

2 1 century, with the rapid development of computer technology and information technology. The condition monitoring of all kinds of equipment in the building is no longer online but scanning measurement. The control mode of the system has changed from centralized monitoring in the past to centralized decentralized control system replaced by field controller with high processing capacity. The central computer mainly provides reports and strain handling, and the field controller automatically controls related equipment through related parameters to achieve control purposes. It is a natural development to use computer management system to replace operators or supplement construction equipment. Automatic control technology has entered a new stage-computer control through simple mechanical controller control and conventional instrument control.