摘要池塘里的溶解氧的浓度是衡量水质好坏最重要的条件，因而对鱼虾的生长特别的重要。鱼虾必须依靠氧气进行呼吸作用，才能得以生存。所以，溶解氧的浓度必须控制在一定的范围内。

本课题研究的是一款根据气象因子实现自动控制的设备。本设计选用了温度和压强作为主要的监控参数，选用了功耗非常低的MSP430F149 单片机作为控制芯片的核心，分析了影响溶解氧含量的环境因子并且建立了精确的算法模型。本文先整体介绍了系统的结构，然后阐述了每个模块的功能。硬件部分包括了包括了数据采集、A/D转换、按键电路、液晶显示、存储模块、JTAG接口电路、时钟电路等模块的设计。这种设计相比传统方法而言成本低廉，控制准确，消耗的资源少，具有广泛的应用前景。69237

该毕业论文有图16幅，表4个，参考文献30篇。

关键词：溶解氧  MSP430单片机  气象因子  自动增氧 

  Design of increasing oxygen controller based on meteorological parameters

Abstract

Pond of the concentration of dissolved oxygen is the most important measure of water quality conditions, therefore particularly important to the growth of fish and shrimp. Fish and shrimp must rely on oxygen for respiration to survival. So, the concentration of dissolved oxygen must be controlled in a certain range.

This topic research is a realization of automatic control equipment according to the meteorological factors. This design chooses the temperature and pressure as the main monitoring parameters, selection of the very low power consumption MSP430F149 MCU as the core of the control chip, analyzed the environmental factors that affects the content of dissolved oxygen and precise algorithm model is established. This paper first introduces the system structure of the whole, and then expounds the function of each module. Hardware part includes includes data acquisition, A/D conversion circuit, liquid crystal display, buttons, storage module, JTAG interface circuit, clock circuit, the design of the module. This design cheap compared with traditional method, the control accuracy, less consumption of resources, has broad application prospects.

Key Words: Dissolved oxygen  MSP430 microcontroller  Meteorological factors   Automatic control 

目  录

摘  要 I

Abstract II

目  录 III

1 绪论 1

1.1课题研究的意义 1

1.2增氧机的近况和发展趋势 2

1.3设计的目标 3

2理论分析 5

2.1水中氧气浓度变化的原因 5

2.2水里氧气浓度的主要影响因素 6

2.3水中氧气浓度的函数关系 9

2.4三种测试方案的比较 10

2.5本章小结 10

3系统的硬件设计 12

3.1设计的整体框架 12

3.2芯片的选取 12

3.3各模块电路设计 13

3.4本章小结 22

4系统的软件部分 23

4.1软件的总体设计 23

4.2各部分的软件设计