高速数据采集系统正文.doc

大学 毕业论文(设计) 物信学院2008级 通信工程专业 题目 高速数据采集系统 学生 xx 学号 2008073021xx 指导教师 xxx 年 月 日  摘 要 本文介绍了基于单片机的数据采集的硬件设计和软件设计，数据采集系统是模拟域与数字域之间必不可少的纽带，它的存在具有着非常重要的作用。本文介绍的重点是数据采集系统，而该系统硬件部分的重心在于单片机。数据采集与通信控制采用了模块化的设计，数据采集与通信控制采用了单片机AT89S52来实现，硬件部分是以单片机为核心，还包括A/D模数转换模块，显示模块，和串行接口部分。本课题设计一个高速数据采集系统,核心部分为8051单片机AT89C52、模数转换器采用MAX1177、人机接口由键盘、LED显示器构成。模数转换器MAX1177采样速率为135Ksps，采样精度为16位，并将采集到的数据暂时存储到外部数据存储器里，而后通过RS-232串行通信口将采集到的数据传送给上位机进行一定的处理。整个系统通过人机接口构成了数据的采集、存储、通信为一体的数据采集系统。 关键词: 数据采集 AT89C52 单片机 MAX232 Abstract This article describes the hardware design and software design of the data on which based on signal-chip microcomputer .The data collection system is the link between the digital domain and analog domain. It has an very important function. The introductive point of this text is a data to collect the system. The hardware of the system focuses on signal-chip microcomputer .Data collection and communication control use modular design. The data collected to control with correspondence to adopt a machine 8051 to carry out. The part of hardware’s core is AT89S52, is also includes A/D conversion module, display module, and the serial interface. A high-speed data sampling with AT89C52 as its core part is designed. The system has a friendly Persons-Machine interface consist of a set of bottoms and LED, which takes ADCMAX1177 as the Analog-Digital converter. The sampling rate and accuracy of system are 100Ksps and 16-bit respectively. The sampled data is storied to extend RAM temporarily, and then is transmitted to PC using RS-232 serial communication. In fact the whole system is made up of the data sampling, storaging, the communication by pass Persons-Machine interface as a system. Keyword: data acquisition ;AT89S52 ;microcontroller;MAX232 目录 摘要...............................................................................................................................1 Abstract......................