摘 要... 3
第一章 绪论... 5
1.1 研究课题背景... 5
1.2 国内外发展概况... 7
1.3 课题研究的目的... 9
1.4 课题的研究内容及章节安排... 9
第二章 电路特性测试仪的设计方案... 10
2.1 系统总体设计思路... 10
2.2 电路特性测试仪总体设计方案... 10
第三章 系统硬件部分设计... 12
3.1 总体设计... 12
3.2 主控制器设计... 13
3.2.1 芯片介绍... 13
3.2.2 时钟电路设计... 16
3.2.3 复位电路设计... 17
3.3 数据转换模块... 17
3.3.1 ADC模数转换电路原理图... 18
3.3.2 ADC管脚定义... 18
3.4 显示电路... 18
3.4.1 电子屏显示模块(LCD1602) 19
3.4.2 LCD1602引脚定义... 19
3.5 开关模块... 20
3.6 滤波模块... 20
3.7 稳压模块... 21
3.8 故障警告模块... 22
第四章 系统软件部分设计... 24
4.1 主程序流程图... 24
4.2 显示模块程序流程图... 25
4.3 ADC0832数据读取流程图... 26
第五章 系统仿真调试部分... 27
5.1 软件研发的背景... 27
5.2 软件程序设计... 28
5.3 系统调试... 29
第六章 总结展望... 31
参考文献... 33
致 谢... 35
附录A.. 36
图A1 系统原理图... 36
摘 要
随着电子行业的发展,生活中使用到的音频电子设备也越来越多,在音频设备中经常使用到的基本放大电路出现的故障也随之增多。在智能设备发展迅速的前景之下,决定利用抗干扰能力较强的微控制器制作一个简易电路特性测试仪用来检测基本放大电路各项测量数值,从而更快的发现问题并解决问题。
当今社会科技的飞速发展,智能和便捷已经成为人们的日常诉求。现在放大电路在使用过程中经常出现故障,并且需要测试电路数据,但是大多数是手动进行测试,一定程度上影响了工作效率。
为了测量数据更安全更便捷,针对手动测试的不足,本设计做出了一种基于STC89C51的简易电路特性测试系统。其技术上利用STC89C51单片机作为控制核心,由单片机中控模块、ADC转换模块、显示模块、开关模块、稳压模块、滤波模块和报警模块组成。该系统主要实现给定放大电路参数(输入阻抗、输出阻抗、放大倍数)和元器件故障自动测试功能,弥补了手动测试的不足。
关键词:电路特性测试仪;单片机;STC89C51;峰值检测
Abstract
With the development of electronic industry, more and more audio electronic equipment are used in daily life, and the failure of basic amplifier circuit often used in audio equipment also increases. In the prospect of rapid development of intelligent equipment, decided to use the anti-interference ability of strong microcontroller to make a simple circuit characteristics tester used to detect the basic amplifier circuit measurement values, so as to find and solve problems faster.
With the rapid development of science and technology, intelligence and convenience have become People's Daily demands. At present, the amplifier circuit often fails in the use process, and the circuit data needs to be tested, but most of the tests are carried out manually, which affects the work efficiency to a certain extent.
In order to measure the data more safe and convenient, aiming at the deficiency of manual test, this design has made a simple circuit characteristic test system based on STC89C51. Its technology uses STC89C51 MCU as the control core, which is composed of MCU central control module, ADC conversion module, display module, switch module, voltage regulator module, filter module and alarm module. The system mainly realizes the function of automatic test for the given amplifying circuit parameters (input impedance, output impedance, magnification ratio) and component fault, which makes up for the deficiency of manual test.
Key words: Circuit characteristic tester; Single chip microcomputer; STC89C51; Peak detection
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基于单片机简易电路特性测试仪的设计资源-CSDN文库