（毕业设计论文）《按需求的中央空调独立计费系统设计》.doc

PAGE Foshan University 本科生毕业设计（论文） 按需求的中央空调独立计费系统设计 学 院： 机电与信息工程学院 专 业： 电气工程与自动化 学 号： 学生姓名： 指导教师： （教授） （职称） PAGE III 摘 要 随着信息技术的发展和中央空调的普及应用，如何对中央空调系统实现有效的控制和准确的计费，已成为该领域中开发的热点课题。本文主要针对公寓式大厦中央空调末端系统的温控及计费的需求，基于能量计费方式研究与设计了一套实用的中央空调计费系统。中央空调分户计费就是分别计量各户实际能量消耗量,并折算成各户应付费用,本文试图通过设计一套专用的计量系统达到准确、科学的计费目的。 该系统采用了单总线结构的DS18B20温度传感器进行温度测量，数据通过单片机处理后再发给上位机。末端数据采集模块挂接在RS-485总线上构成 RS-485 总线网络 ,PC机与其进行数据通信实现了对现场多路温度数据的采集，中心计算机上运行基于MCGS工控组态软件平台开发的人机控制界面，可以实时显示现场采集发回的各项参数、数据。 关键词：中央空调；分户计费；监控系统；能量计量 The Design of Billing System for Central Air Conditioning Abstract As the develoPment of information technology and the widely application of central air conditioning, How to control it effectively and charge I texactly has been a hot Point in this research field. This paper mainly apartment blocks for the end of the central air-conditioning system, temperature control and billing demand, billing methods based on energy research and design a set of utility billing system of central air-conditioning.The charge-by-household system of central air condition is to measure the actualenergy consumption of each household separately,and convert it to the household expenditure.This paper attempts to design a set of special-purpose meteraging system efficiently. The system uses a single bus structure DS18B20 temperature sensors temperature measurement, data processing and then distributed through the single-chip PC. The end of data acquisition module mounted in the RS-485 bus constitute a RS-485 bus network, PC and its data communication machine has on-site multi-channel temperature data collection, the center run on a computer-based industrial control configuration software platform MCGS development of man-machine control interface, you can collect real-time display back to the scene of the parameter