《基于CAN总线的楼宇温控系统设计》-毕业论文.doc

PAGE II - - 哈 尔 滨 理 工 大 学 毕 业 设 计 题 目：基于CAN总线的楼宇温控系统的设计 院 系： 测通学院 测控技术与仪器 姓 名： ███ 指导教师： ███ 系 主 任： ███ 2011年 6月24日 基于CAN总线的楼宇温控系统的设计 摘 要 随着经济的发展，人们对自己赖以生存和歇息的环境也开始有了进一步的要求。我国的建筑供暖目前正处在发展的时期，传统供暖方式的缺陷日益突出，新的供暖方式不断涌现，环境保护、能源结构面临重大调整，政府不断出台新的供暖政策，这一切都为新型供暖方式的研究奠定了基础。采用传统的RS-485总线由于总线效率低、系统实时性差、应用不灵活等缺点，越来越不能适应大中型智能楼宇监控系统的需要。 本论文介绍了基于 CAN 总线的楼宇温度控制系统的总体设计方案，并讨论了该系统在多用户条件下的智能化控制的具体设计。其中CAN接口适配卡、智能节点和报警节点的硬件和软件设计是本文介绍的重点。 本设计采用CAN总线作为通信载体，构建了一套楼宇温控系统。该系统基于CAN2.0B技术规范，采用智能节点作为现场控制器控制房间地热电缆加热的启停并结合CAN总线自身的底层协议特点，设计了针对本系统的通信协议，通过 CAN 总线与主控计算机相连，控制、调节室内温度，达到节能环保的目的。上位管理机界面采用VC++设计，实现操作简单，管理灵活的特点。 关键词　CAN；现场总线；温控系统；智能节点 Design of Temperature Control System in Buildings Based on CAN Bus Abstract Along with the economic development, people have some further requirements with the living and resting environment. In our country heating in buildings is currently in the developing period. The deficiencies of traditional way of heating are becoming more prominent. New heating methods are springing up. Environment protection and energy structure are faced regulating. Government introduces new policies of heating constantly. These are looking into some new ways of heating. The traditional RS-485 bus can not adapt to the monitoring system’s requirements in some intellect buildings for its disadvantages, such as low efficiency, bad real-time and inflexibility. This paper describes the CAN bus based building temperature control system design plan, and discuss the system in multi-user intelligent control of the specific design. One CAN interface adapter cards, intelligent nodes and alarm node hardware and software design is the focus of this article describes. This design uses a CAN bus as the communication carrier to construct a building temperature control system. The system is based CAN2.0B technical specifications, using intelligent node controller to control the room as a s