毕业设计（论文）-89C52单片机系统实现煤气泄漏检测报警装置精选.doc

摘 要 本文论述了基于测控技术的煤气泄漏检测报警装置的硬件和监控软件方案设计与实现。本系统采用了89C52单片机和四位半AD7135系统设计技术，能对传感器产生的模拟信号进行数据采集和处理。传感器方面选用了TP-2常温型CO气敏传感器，并采用了恒流源接法。 此方案还为使用者提供了LED显示模块、键盘控制、大容量存储器件及蜂鸣器报警装置，使智能化程度更高、结构更紧凑、功能更丰富。 关键词：89C52 AD7135 恒流源 Abstract This essay describes that the hardware and the monitor software project of “the detector and alarm for the leakage of CO” which is based on measure and control technology. This system designed with sing microcomputer 89C52 and 4.5-bit AD7135, can collect and deal with the simulation signals which are created by gas sensor. Besides, we have chosen TP-normal temperature CO sensor for this system, and adopted steady current source. This system can supply user with LED display module, keyboard control, MSF, buzzer for alarm and so on. This unit has good intelligent, tightly packed structure, plentiful function, good technical hereditability and so on. KEY WORD:89C52 AD7135 constant-current source 目 录 绪论-------------------------------------------------------------(4) 功能与设计方案----------------------------------------------(5) 第二章 硬件电路设计--------------------------------------------------(7) 第一节89C52说明------------------------------------------------------(7) 总线说明-------------------------------------------------------(7) 89C52振荡电路------------------------------------------------(7) 89C52复位电路------------------------------------------------(8) 89C52译码及外部扩展电路------------------------------------(8) 存储单元电路设计----------------------------------------------(9) 第二节CO浓度检测报警电路优化设计----------------------------------(10) 传感器部分-------------------------------------------------(10) 传感器驱动电路--------------------------------------------(13) 3 CO检测报警电路--------------------------------------------(13) 第三节 LED显示器及接口设计------------------------------------------(14) 1. LED显示器结构与原理--------------------------------------(14) LED显示器的接口设计----------------------------------------(15) 第四节 A/D转换器件7135----------------------------------------