基于CPLD的多功能温度检测系统设计

rong anti - jamming , were maintained. The system has high performance/ price ratio. The system suits for accurate measurement of ponent s especially.РThe thought way and methods that bases on plex programmable logic device) and the criterion of temperature measuring system had been bining several analyzing and research teaches,the material methods based on CPLD program,and the advantage of CPLD had been send out.РKey words:Temperature Detection;Programmable;EPM7128S;CPLD;VHDLР目录Р1 绪论?1Р1.1 引言?1Р1.2 课题研究的背景及意义?1Р1.3 国内外发展状况?3Р2 VHDL及MAXPLUSⅡ平台介绍?4Р2.1 VHDL的介绍?4Р2.2 Max+plusII的介绍?4Р3 原理和方案论证?6Р3.1功能原理?6Р3.2控制系统?6Р3.3温度传感器的方案论证?6Р3.4 A/D转换器的方案论证?9Р4 硬件电路设计?11Р4.1温度检测系统?11Р4.2温度传感器?11Р4.3电源模块?12Р4.4运算放大器模块?12Р4.5 AD转换模块?13Р4.6数码管显示电路?15Р4.7键盘?15Р5 软件设计?17Р5.1电子钟模块?17Р5.2温度检测模块?18Р5.3显示电路模块?20