Remote Centralized Monitoring System Of Central Air Conditioning Based On WEB

Currently, most of the central air-conditioning system uses decentralized control technology, each controller can only monitor and control one air conditioner’s status. Obviously, there is a bad effect on the intelligent management and reduce energy consumption of the entire system. With the development of embedded technology and network communication technology, on the market, there are many new microcontrollers with higher performance, lower prices, while the network communication technology has higher reliability and real-time. Therefore, we can apply these new microcontrollers and advanced network communications technology to the field of remote monitoring.The purpose of this paper is to research and develop a remote centralized monitoring and control system of the central air conditioner based on Web. The remote monitoring and control system based on B/S mode, a large number of EdPt devices is monitored through a centralized manner. Users can interact with the system through a browser, quickly and effective monitoring and control the system status, in order to reduce energy consumption.On the monitoring site of the system, smart gateway is used to connect with Ethernet, smart temperature controller located in each room. they are designed using STC Series MCU. smart gateway using ENC28J60implements Ethernet interfaces, when buildings is distributed in a wide range, the system status data can be uploaded to the monitoring platform, enables multiple air-conditioning system can be centralized remote real-time monitoring. smart temperature controller is responsible for collecting real-time temperature and air conditioner status data, and control the air conditioner status based on advanced control logic or control commands are issued by the monitoring platform, to achieve the purposes of reduce energy consumption. The role of the wireless network is a data transmission channel between smart gateway and smart temperature controller, it was designed using the CC2530series chips. It is used to real-time and reliably wireless data transmission in buildings. On the monitoring platform of the system, web service program uses the JSP, AJAX, Struts, Hibernate and other technologies, it provides a unified, simple, elegant interface for interaction between users and the system, users log in system using a browser and real-time monitoring and control the status of the system; The status data of the system using MYSQL database for storage, users can query historical data. The system can be automatically monitored by the applications, the system can running in a reasonable state without staff intervention, eliminate energy waste phenomenon in the system.This paper introduces software and hardware components of the system, and sub-chapter describes hardware and software design methods and ideas. About the hardware design of the system, the paper provides circuit schematics about smart gateway and smart temperature controller based on STC MCU(STC15L2K60S2or STC15L2K60S2), And provides a schematic of Zigbee network node based on CC2530F128RHAR chip. About the software of the system, the paper provides the method of embedding the TCP/IP protocol stack into MCU, and provides a majority of flow chart or source code of microcontroller program. About the software of the monitoring platform, the paper provides the method of coding for web service program, which uses JSP, AJAX, Struts, Hibernate and other technologies.Finally, the function and implementation process of the system are summarized, problems of the system and the methods for improve are presented.