Zigbee technology based central air-conditioning cold source monitoring system and method

Abstract

The invention discloses a zigbee technology based central air-conditioning cold source monitoring system and method. The tree topology is adopted to establish a cold source monitoring network, enabling a distributed address allocation mechanism to perform network address allocation, and the monitoring network is composed of a coordinator node, a routing node and a monitoring node. The coordinator node is a network center node, is responsible for establishment of a zigbee network and serves as a gateway node. The routing node is responsible for network routing and data transmitting. Terminal nodes include the monitoring node and a control node. A wireless zigbee technology is introduced into the central air-conditioning cold source monitoring system, the distributed address allocation mechanism performs network node address allocation, and a relevant gateway can be established between a Zigbee netork and a field bus network to serve as a bridge of the networks and to be merged into an existing FCS field bus network, so that an existing wired BACnet building automation system can conveniently perform expansion in a low operation cost mode and obtains high economic benefit.

Description

technical field [0001] The invention relates to a cold source monitoring system, in particular to a central air-conditioning cold source monitoring system and method based on wireless zigbee technology. Background technique [0002] Central air-conditioning is widely used in modern buildings. At present, the management and control of the central air-conditioning cold source system has become an important part of the building automation system. [0003] At present, Lonworks, BACnet, CAN, EIB and other fieldbus technologies have been widely used in the monitoring of central air-conditioning cold source systems. Although FCS based on fieldbus overcomes many shortcomings of the original DCS (distributed control system), there are still some shortcomings as follows: ① A variety of fieldbuses coexist and are incompatible with each other, resulting in the interoperability of FCS only in the same field implemented in the bus system. ②Because the existing fieldbus is wired conn...

AI Technical Summary

Problems solved by technology

Although FCS based on fieldbus overcomes many shortcomings of the original DCS (distributed control system), there are still some shortcomings as follows: ① A variety of fieldbuses coexist and are incompatible with each other, resulting in the interoperability of FCS only in the same field implemented in the bus system

②Because the existing fieldbus is wired connection, it is not suitable for some monitoring occasions where wiring is difficult

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