Intelligent node, and system and method for building automatic control based on two-level network

Abstract

The present invention discloses an intelligent node, and a system and method for building automatic control based on a two-level network. A first-level information network is formed by independent intelligent nodes, constructed through adoption of wired transmission Ethernet and has capabilities of self identification, self organization and self coordination; and a second-level control network directly faces each system on the scene and is constructed through adoption a 433MHz wireless sensor network so as to satisfy the measurement and control requirements of each system on the scene. The concrete problems of reliability of information transmission of each system and online plug-and-play in the system integration process such as device quantity increasing and decreasing are mainly solved so as to realize the flat management of a building control network.

Description

technical field [0001] The invention relates to the technical field of building intelligence, in particular to an intelligent node, a building automation system and a method based on a secondary network. Background technique [0002] The building automation system is a building intelligent system with the richest content, the most complex control management, and the most intelligent devices in the intelligent building control system, and it is one of the most important components of intelligent buildings. At present, most of the building automation systems on the market adopt a layered structure model, mainly fieldbus topology. In simple terms, it can be divided into management layer, control layer and field layer. Existing building automation systems generally adopt this hierarchically integrated system architecture. Sensors and actuators are connected through a bus communication network. Once a device is added or withdrawn from the system, the corresponding upper-level sys...

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Problems solved by technology

Existing building automation systems generally adopt this hierarchically integrated system architecture. Sensors and actuators are connected through a bus communication network. Once a device is added or withdrawn from the system, the corresponding upper-level system must be modified. Inconvenience to parties and managers, such as regular software upgrades and redefinition of new system functions

This hierarchical architecture relies on every link in the entire system, especially the top-level processor, and needs to collect all information before making corresponding analysis, calculation and control decisions, which makes it difficult for the stability and efficiency of the system to meet certain requirements. application needs

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