基于单片机的数据采集系统的硬件设计和软件设计7905929.docxVIP

摘要 随着信息技术的飞速发展，实时数据采集和处理的不可缺少的。这是给设计工作提出了两个要求：首先要求简单的智能接口，并具有较高的数据传输速度；其次，因为数据通常比较大，要求的实时数据计算器能快速做出反应，及时进行分析和处理。 本文介绍了基于单片机的数据采集系统的硬件设计和软件设计，系统硬件部分的重心在于单片机。数据采集采用了单片机STC12LE5A32S2来实现，软件部分则借助KEIL C51来实现。 关键词：单片机 数据采集 KEIL C51 Abstract With the rapid development of information technology, real-time data acquisition and processing of the indispensable. This is put forward two requirements to the design work: first requires simple intelligent interface, and has high speed of data transmission; second, because the data is usually large requirements of real-time data according to the calculator can quickly respond timely analysis and processing. This paper introduces the hardware design and software design of the MCU data acquisition system based on, the center of gravity of the hardware part of the system lies in the monolithic integrated circuit. Data collected by the SCM STC12LE5A32S2 to achieve, part of the software with KEIL C51 to realize. Keywords: Microcontrollers，Data acquisition ，KEIL C51 目录 第1章 引言................................ 1.1课题研究的背景及意义............................... 1.2国内外研究现状及发展趋势........................... 第2章 系统总体设计方案............................ 2.1系统总体设计方案............................... 2.1.1系统设计要求................................. 2.1.2系统总体方案和主要任务....................... 2.2主要部件的选型................................ 2.2.1 STC12LE5A32S2芯片............................ 2.2.2 DHT11数字温湿度传感器........................ 2.3软件开发平台介绍.................................. 2.3.1 KEIL C51开发软件.......................... 2.3.2 MSComm 控件............................... 第3章 系统硬件设计................................. 3.1数据采集系统总体结构...................... 3.2数据采集系统硬件电路............................ 3.2.1单片机最小系统设计........................... 3.2.2传感器电路..................................... 3.3硬件保护与抗干扰措施............................ 第4章 系统软件设计................................. 4.1系统软件开发语言................................ 4.2数据采集系统软件总体设计方案....................... 4.