基于ATMega16的数字频率计的设计

JIMI

论文编号ZXX197  论文字数:9915,页数:30
摘要
 频率计是数字电路中的一个典型应用，实际的硬件设计用到的器件较多，而且会产生比较大的延时，造成测量误差、可靠性差。传统的频率计一般是由分离元件搭接而成。随着单片机的大规模的应用，单片机在频率测量方面也越来越多的被使用。在本课题中使用的ATMega16这种低功耗,高性能的单片机，具有更好的稳定性，更快和更准确的运算精度，推动了工业生产，影响着人们的工作和学习。
 本次设计就是要通过以ATMega16单片机为控制核心，实现对信号频率进行准确计数的设计。频率计装置由整形器、放大器、分频器、单片机系统，LED显示模块组成，实现对频率进行测试并在LED显示出来。
 本次毕业设计是基于ATMega16单片机的频率计装置设计，设计sch电路原理图，并根据原理图完成硬件部分的制作，采用单片机应用系统编制系统程序，最后通过综合调试，能实现所有要求的功能，完全满足本次毕业设计的要求。
 
关键词：数字频率计，频率，频率测量
 
 
 ABSTRACT
 Frequency of a digital circuit in a typical application, the actual hardware design of the devices used more and will have a big delay, caused by measurement error, poor reliability. The frequency of the traditional general is formed by discrete components lap. With large-scale application of the SCM, SCM in frequency measurement also be used more and more. In this issue of the use of ATMEGA16 This low-power, high-performance microcontroller, the stability is better, faster and more accurate calculation accuracy, and promote industrial production and affect people's work and study.
 The design is to pass to ATMEGA16 for the control of microcontroller core, and the signal frequency accurate count of the design. Frequency of devices from plastic, amplifiers, crossover, SCM system, LED display modules, and the frequency of testing and LED display.
 The graduation project is based on ATMEGA16 SCM frequency of device design, sch circuit design schematics, and under the principle of complete hardware part of the production, use SCM application procedures for the preparation of the system, the final adoption of integrated debugging , To achieve all the required functions, to fully meet the design of this graduation requirement.
 
Key Words: Digital Frequency, Frequency, Frequency Measurement
 
 
目录
摘要 I
ABSTRACT II
第1章 引言 1
1.1 数字频率计概述 1
1.2 频率测量仪的设计思路与频率的计算 1
1.3 基本设计原理 2
第2章 关于ATMega16原理及功能实现 3
2.1 ATMega16单片机介绍 3
2.2 ATMega16引脚功能及说明 4
2.3 ATMega16内核介绍 5
2.4 ATMega16的功能特性 6
第3章 硬件结构设计 9
3.1 系统硬件的构成 9
3.2 系统设计及原理 10
 3.2.1 系统算法设计 10
 3.2.2 ATMega16原理图 11
第4章 单元程序设计 12
4.1 定时模块 12
4.2 T1计数程序 13
4.3 频率数据采集 16
4.4 进制转换 16
4.5 数码显示 17
第5章 程序的调试 19
第6章 结束语 20
致谢 21
参考文献 22
附录1硬件实物图 23
附录2源代码 24