基于微控制器的多路信号采集系统设计+电路图+程序
毕业论文关键词 多路信号采集 AT89C52 Proteus 软件
Title The Design of the Multi-channel Signal Collection System Based on Microcontroller
Abstract Recent years have witnessed the rapid development of science and technology. The signal collection has been applies widely to various kinds of commercial, military and industrial areas. With the increasingly demand and higher requirement of accuracy and stability, it will have a prosperous future market. In this paper, we design a multi-channel signal collection system based on microcontroller control. The paper mainly discusses the design principle and implementation method of the multi-channel signal collection system which the core device is the AT89C52 single chip microcomputer. As a consequence of the modular design thinking, acquisition module circuit design is finished. Keil C51 is the development platform in this software design. The system is connected to a computer through the UART interface. This design has achieved several functions such the real-time acquisition 8-way signal, any way signal and gathering data can be chose to display on a display by using the keyboard and so on. After the application of Proteus software for simulation analysis, the simulation results show that the functions of the circuit system has reached its design target.
Keywords Multi-channel signal collection AT89C52 Proteus Software
目次
1绪论1
1.1课题研究背景及意义1
1.2课题研究现状2
1.3本论文完成的工作及章节安排3
2系统总体设计规划4
2.1采集系统基本构成4
2.2系统总体规划设计4
3系统的硬件方案设计7
3.1AT89C52功能介绍7
3.2硬件电路的设计与实现9
4系统软件设计17
4.1KeilC51软件简介17
4.2软件总体设计方案18
4.3主要功能模块软件设计19
5系统仿真24
5.1硬件仿真24
5.2串口传输仿真26
结论29
致谢30
参考文献31
附录A电路原理图32
附录B源代码33
1 绪论 1.1 课题研究背景及意义 信号采集是将距离、温度、压力、速率等模拟信号通过釆集、转化等方式变为数字信号，再经计算机进行储存、处理、显示和打印等步骤的过程，具备相应功能的系统称为信号采集系统[1]。 二十世纪七十年代中后期，信号采集装置被改进并重新设计出来，这种装置包括了Microcomputer、采集部件和数字仪表等部分，因其功能与传统系统相比，更高效、便捷，所以得到广泛推广。 二十世纪八十年代，计算机技术进步迅猛，随着这一浪潮，信号采集系统渐渐不再只有专用这一特性，模块化结构被加入其中，并渐渐向普遍适用转变。这一阶段的信号采集系统已为模块化结构，并且已出现总线技术等新科技。因为模块化的设计，总体系统变得更易组合、实际操作也更加便捷。八十年代后期，软件与硬件相联合的思想逐渐产生，这一时期的信号采集系统，硬件主要包括单片机、外围电路、大规模集成部件和计算机构成，软件则实现对总体系统的接口配置及运行控制。这一模式既实现了降低成本，缩小体积的目的，