电子课程的设计LM324温度指示器.doc

电子课程设计 课题： 学院：测试与光电工程学院 课题进程： 题目的选择及思路的确定 周 1 周 1 周 2014年6 月 13日 LM324温度指示器 学生姓名：李中浩 班级指导老师：金信鸿 摘要: 当今社会各种家用电器种类繁多，可谓琳琅满目，各个电器系统组成也变的复杂且紧凑，无论电路简单与复杂，重要与否，它们都起到了不可替代的作用。我们日常生活中见到的冰箱、电饭煲以及电磁炉等等都是由很多基本的小单元组成，然而温度指示电路也成了其中很常见也必不可少的单元组件。 本电路是利用低功耗四运算放大器LM324设计的温度指示电路，利用所学过的模拟电子技术基础知识结合proteus仿真分析。此电路具有放大功能，低功耗特点，机构简单，设计灵巧，适合一些家用电器的指示电路。电路中有一个负温度系数热敏电阻，电阻所受温度升高，电阻阻值下降。此电路中起始温度为室温，温度每上升10℃，相应的指示灯LED点亮一个，由此可以指示电器实时温度情况。 关键词：LM324; 温度指示器； Proteus仿真 指导老师签字： 目录 前言····························································1 1、课程设计的目的和要求 ········································2 1.1课程设计的目的 ·············································2 1.2课程设计要求 ···············································2 2、工件原理简介 ················································2 2、1 LM324······················································2 2、2 热敏电阻···················································4 2、3发光二极管工作原理··········································6 3、课程设计理论准备 ············································8 3.1、Proteus简介·············································8 3.2、Proteus功能特点·········································8 3.3、Proteus快捷键···········································12 4、电路原理图 ··················································13 5、元件清单:·····················································14 5.1、原理图中元件清单·······································15 6、仿真、手工焊PCB板并进行电路调试······························15 7、课程设计收获与心得············································19 8、致谢························································19 9、参考文献······················································20 LM324温度指示器 前言 现代检测技术已经应用到各行各业中，而温度传感器又是其中必不可少的部分，温度传感器的应用越来越频繁，促使温度传感器的技术进步，它的种类也越来越多，不同的温度传感器拥有不同的参数，满足于不同的条件，温度测量电路广泛应用于生产生活中的各个方面，特别是在工业生产中，温度自动控制已经成为一个相当成熟的技术。我们日常生活中见到的冰箱、电饭煲以及电磁炉等等都是由很多基本的小单元组成，然而温度指示电路也成了其中很常见也必不可少的单元组件。本次课程设计给我们创造了良好的学习机会：一是查阅资料将自己所学的数字电子技术，模拟电