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1、广西科技大学(筹)毕业设计（论文）说明书课题名称 基于 CAN 总线的智能照明控制系统设计 院 系 电气与信息工程学院 专 业 测控技术与仪器 班 级 081 班 学 号 200800903072 姓 名 秦宗伟 指导教师 罗功坤 二 0 一二 年 五 月 二十 日.摘 要本设计是基于 CAN 总线的智能照明控制系统。设计中采用主从节点组网设计方案，通过主节点与多个从节点之间的相互通信以实现对照明设备的远程实时监控。主节点采用 NXP 公司生产的 ARM7 系列 LPC2119 微处理器和其内部集成的 CAN 控制器以及PCA82C250 收发器设计出主节点硬件原理图，并制作出主节点硬件电路板
2、。从节点采用STC89C52 单片机和 SJA1000 独立 CAN 控制器以及 PCA82C250CAN 总线收发器，设计出从节点硬件原理图并制作出 2 个从节点实验电路板。通过将主从节点实验电路板挂接到网络构成一个一主多从的主从式照明控制局域网络。利用该网络进行 CAN 总线照明控制系统理论研究和实验测试。在本文中详细的介绍了 CAN 总线主从节点的软硬件设计原理、CAN 总线通信原理、以及 CAN 总线应用层协议的制定，并采用 SD 卡存储技术、TFT 彩屏显示技术、触摸屏技术等现实了友好的人机界面。在 TFT 液晶显示方面是本设计的一大亮点，设计中模拟工业控制工艺流程图，对工艺中涉及的
3、总线、灯设备、板卡等进行精心绘制显示。使整个控制系统结构清晰、形象、逼真。在输入设备方面是本设计的第二大亮点，本设计采用当前较为先进方便的触摸屏输入技术，为用户提供一个方便易捷的输入方式，以实现人机交互。灯设备离线检测功能是本设计的又一大亮点，本设计采用定时询问方法，实现了从节点的离线检测功能。总之，在本设计中，主节点实现了对多个从节点灯设备的远程设置和监控功能、离线检测功能、运行通信指示功能、实时更新显示功能等。从节点具有独立设置、控制本节点灯设备的功能。整体系统运行可靠，通信正常，不出现通信拥堵、死机等现象。并开发出具有一定应用意义的系统软硬件，实现了照明灯设备的有效控制。关键词： CAN
4、 总线；节点；照明控制；TFT；触摸屏技术；SD 卡.AbstractThe design is intelligent lighting control system . Its based on CAN bus.In the design we use master and slave network node.By The main communication between the master node and multiple slave nodes to make the remote real-time monitoring of lighting equipment succ
5、essful. The master node uses the ARM7 family NXP LPC2119 microprocessors and integrated to its internal CAN controller and PCA82C250 transceiver design hardware schematic diagram of the master node, and create the hardware circuit board of the master node.The salve node use STC89C52 microcontroller
6、SJA1000 stand-alone CAN controller and PCA82C250CAN bus transceiver design from the node hardware schematic diagram and also create two nodes breadboard.By put the master and slave node experimental circuit board to the main network to constitute a main and some slaves lighting control local area ne
7、twork. U sing the network to research and experimental testing of the CAN bus lighting control system.In this paper a detailed introduction master and slave node of the CAN bus ,hardware and software design principles, the principle of CAN bus communication, the formulation of the CAN bus applicatio
8、n layer protocol, SD card storage technology, TFT color display, touch screen technology and other practicalfriendly interface.The TFT LCD is one of the most wonderful of this design.In the design,we simulate industrial control process flow diagram of the bus involved in the process, light equipment
9、, boards, carefully drawing display.And then make the control system more clear image and vivid. Advanced and convenient touch-screen input technology are the second highlights in the design.Because it apply a convenient input to the owners.The third highlights is that Light equipment offline detect
10、ion. So We use from time to time ask, from the node offline detection.In short, in this design, the master node to multiple remote setup and monitoring functions of light equipment from the node offline detection, run communication indicator, updated in real time display.The slave node With independ
11、ent settings, control the function of the lamp device of the node from the node. The overall system is reliable, normal communication, the communication congestion, crashes and so on. And develop system software and hardware with a certain significance of application to achieve effective control of the lighting equipment.Keyword: CAN bus；node；Lighting control；TFT；Touch screen technology；SD card.目录摘 要 .IABSTRACT.II1 绪论 .11.1 课题背景 .11.2 现场总线的技术特点和现状 .11.3 课题的提出及意义 .22 系统设计 .32.1 设计要求 .32.2 总体设计方案 .32.2.1 设计思路 .32.2.2 方案论证与比较 .42.2.2.1 主控制器 .
