单片机控制的多媒体教室监控系统研究参考.doc

编号： 毕业设计说明书 题 目：单片机控制的多媒体教 室监控系统研究 学 院： 机电工程学院 专 业： 电气工程及其自动化 学生姓名： 学 号： 指导教师单位： 电气自动化系 指导教师： 职 称： 副教授 题目类型： 理论研究 ?实验研究 ?工程设计 工程技术研究 软件开发 摘 要 根据多媒体教室电气设备使用方便的需求，本文设计了一个多媒体教室监控系统。本文阐述了多媒体教室监控系统的设计原理与实现方法。文章分别从硬件电路设计和软件实现这两个方面对系统的设计过程进行描述。 此系统采用AT89S52单片机作为主控中心 软件部分采用C语言程序编制，分结构模块进行设计，并且通过仿真工具对系统进行仿真以及调试。依据系统功能设计，编制程序流程图，再根据流程图思路编写各功能模块程序，从而实现红外信号的接收、解码，以及完成目标控制任务。 红外信号具有性能可靠、结构方式简单等特点，继电器可实现强弱电隔离，因此，本系统可实现随意控制多媒体教室的电气设备，并且具有极强的抗干扰能力。本系统将给多媒体教室的应用带来更多便捷。 关键字：多媒体系统；红外遥控；单片机；继电器 Abstract To meet the demand of being convenient to use for electrical equipments in multimedia classroom, this paper introduces the design of a monitoring system in multimedia classroom. This paper describes the design principles and methods of monitoring system in multimedia classroom. It describes the design processes of this system from two aspects including the hardware design and software implementation respectively in detail. This system applies MCU AT89S52 as the controlling unit. MCU collects and recognizes infrared remote control signals to control the relays to be closed or disconnected, thus achieve the objective of controlling electrical equipments in multimedia classroom. The hardware of the system includes the infrared signal transmission circuit, infrared signal receiving circuit, and controlling output circuit. Software of this system applies C programming and structural module design. Also it was simulated by simulation tools for system simulation and commissioning. The flow chart of the software is designed according to the systematic function design. After that, every function module of the system is programmed based on the ideas of flow chart, to implement infrared signals, decoding and accomplishing the goals of controlling objective. The infrared signal has a performance-reliable, and simple structure features. Besides, rela