毕业设计：基于C51的数据采集电路PCB的设计与制作（终稿）.doc

数据采集PCB板的设计 摘 要 “基于C51的数据采集电路PCB的设计与制作”是针对现代水利行业水情数据采集而设计制作的电路PCB。同时，也是为了响应国家提出的数字水利这样一个大背景下，把水利信息化尽快的实现、完善、壮大起来。本设计讲述了电子电路设计软件Protle99的基本功能，而后逐一介绍开发数据采集系统的步骤：需求分析、系统分析、系统设计、系统实现、系统维护。需求分析介绍了针对水利行业而进行了本系统的设计，在系统分析中分析了电子电路设计功能的各种元气件功能和各种连线要完成的功能，以及整个要完成的功能。在系统的设计中，详细的展现了系统的各个功能模块、原理图绘制、PCB的完成所需的准备步骤。在系统的实现中，给出了一个满足系统功能的完整PCB。通过反复的测试，我们得出结果，整个系统的设计是成功的，可以应用到所有的水利行业，进行数据的采集。 关键字：PCB；数据采集；电子电路；数字水利  The Design and Implementation of Data Acquisition Circuit Based on C51 Abstract “The design and implementation of data acquisition circuit based on C51” is the circuit PCB designed and implemented according to data of water situation of modern conservancy industry. At the same time, in order to response to the digital conservancy raised by our country, it makes the conservancy informationization implement, perfect and grow. This paper discusses the basic function of electronic circuit design software-Protle99. It takes this system for example to introduce the development steps of this system one by one: demand analysis, system analysis, system design, system implementation and system maintenance. Demand analysis introduces the design of this system focusing on conservancy industry. It analyses functions of various components and various connections of electronic circuit design in system analysis, as well as the function of completion. In the design of this system, it shows the preparing steps of every functional module, drawing of principle chart, and completion of PBC of this system. In the implementation of this system, it gives a complete PBC matched for the function of the system. After repeated tests, the result is that the design of this system is successful and it can be applied to all conservancy industries to collect data. Key words：PCB; data collection; electronic circuit; digital conservancy 目 录 论文总页数：23页 1 引言 1 2 开发概述 1 2.1 数据采集系统概述 1 2.2 目前水利现状分析 2 3 需求分析 3 3.1 需求调研 3 3.2 组织结构的分析 3 3.3 系统功能特点 4 3.4 开发运行环境 4 3.5 新数据采集系统设计加防雷特性： 5 4 系统设计 5 4.1