JOHNSON变风量空调网络控制系统与Lon Works系统的数据集成

Data Integration of JOHNSON VAV Air Conditioning Network Control System and LonWorks System

METASYS是由JOHNSON公司开发的建筑设备自动化管理系统,它利用先进的网络控制技术将建筑物内的变风量空调等设备进行集中监视及管理。但由于METASYS是封闭系统,其它公司的产品不能与该系统进行集成,导致用户一旦用了METASYS系统,在日后的系统升级、产品更换和维护中都要采用其产品,形成了一定程度的垄断。在工程实践中,目前变风量空调系统的升级、改造经常采用现场总线技术中的LonWorks系统,METASYS与LonWorks系统是两个完全不同的系统,如何使两者的数据能够有效地集成在一起,是需要解决的难题。本文用DDE(动态数据交换)技术将这两个系统的数据有机地集成在一起,使该问题得到有效解决。

METASYS is a building device automation management system designed by JOHNSON Company.Advanced network control technology is utilized to supervise and manage air conditioning device by METASYS. However METASYS is a close system, products from other company is not able to integrate with it. Once user adopts METASYS system, at later time, it must be also used in system updating and maintaining.But in practice, LonWorks system is often used in VAV air conditioning system updating and maintaining. Since METASYS and LonWorks are two different systems, it is difficult to integrate them together. This problem is solved effectively through DDE （dynamic data exchange） method in this paper.