摘要随着近年来极端天气的发生越来越频繁，并且城市化的进程越来越快，对城市道路路面状况的要求就越来越高。近年来，因为降水而引起的城市内机动车道和人行道大量积水的现象经常会出现，并且还发展得越来越严重。目前，国内各大城市的道路积水监测与报警装置都没有形成体系。本次毕业设计正是针对以上的现象,设计了城市道路积水多点监测系统，从而能够很好地解决这个问题。

    本文的监测系统核心部分是AT89C51单片机，论文主要讲述了城市道路积水多点监测及预警系统总体方案的设计和论证、硬件电路的设计以及软件设计。硬件设计包括压力传感器、A/D转换器、单片机系统、数码显示器、无线发射模块。软件设计主要有数据采集、水深计算、水深显示、串行通信和报警等模块程序。整个系统通过了Proteus仿真，实现了预定的设计要求。68503

毕业论文关键词： AT89C51单片机  检测  报警  无线发射  积水深度

毕业设计说明书（论文）外文摘要

Title  Design of multi point monitoring and early warning system of City Road Waterlogging

Abstract

With the recent extreme weather occurs more and more frequent, and the city in the process of rapidly growing, on city road pavement condition requirements more and more high. Due to heavy rain water in the road not only may result in direct loss of personal and public property, but also may lead to disruption of traffic and pollution of the environment, have a serious impact on the normal production and living order city. At present, the road seeper alarm and monitoring the domestic each big city has not formed the system. This graduation design is to solve the above phenomenon, the design of the city road seeper multi-point monitoring system, which can solve this problem well.

The core of monitoring system in this paper is AT89C51 microcontroller, design and prove the paper focuses on the city road seeper overall scheme of multi-point monitoring and early warning system, the design of hardware circuit and software design. The hardware design includes a pressure sensor, A/D converter, microcontroller system, digital display, wireless transmitter module. The software design mainly include data acquisition, depth calculation, depth water display, serial communication and alarm module program. The entire system through the Proteus simulation, achieve the expected design requirements.

Keywords  AT89C51 microcontroller   Detection    alarm   wireless transmission    water depth

目  录

1 引言 3

1.1 本课题研究背景及意义 3

1.2 课题研究现状 3

1.3 论文的主要内容及章节安排 4

2 系统总体方案设计 5

2.1 方案设计 5

2.2 系统模块介绍 6

2.3 系统各器件的选取 7

3 硬件设计 8

3.1 单片机系统 8

3.2 压力传感器模块 14

3.3 A/D转换器 14

3.4 数码管显示模块 16

3.5 报警模块 18

3.6 无线发射模块 19

3.7 监测点的整体硬件图 22

4 软件设计