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1、摘 要目前, 太阳能热水器技术上比较成熟，但热水控制器的功能还有可开发的潜力,市面在售的控制器绝大部分只具备温度和水位显示功能,不具备温度水位的自动控制功能。虽然有的控制器配有电加热辅助装置,但都不是全智能型的,给用户使用带来许多不便。太阳能单片机控制系统是对其水温与水位的不同进行检测和控制。本次设计对太阳能控制系统做出全面的了解，对其结构及原理了解详尽。对于水温与水位的检测和控制进行了重点介绍。本次设计有驱动电路能够防水管冻裂，还能够在必要时手动控制。系统设计包括硬件设计和软件设计两部分。该控制系统是以 AT89C51 单片机为基础，实现了检测、控制与显示等功能。文中详细地描述了控制电路的设
2、计过程，包括：键盘与 LED 显示电路、驱动电路、水温、水位控制电路等。对于软件设计采用模块化结构，包括主程序、键盘中断子程序、DS12887 更新周期结束中断子程序、LED 显示子程序和提前加热时间计算子程序等。关键词：单片机，太阳能热水器，水位检测，温控系统ABSTRACTAt present, Solar energy water heater technology more mature, but hot water controller function and its development potential，most of the market in the sale of t
3、he controller only has the temperature and water level display, do not have the temperature of the water level control function. Although some of the controller is equipped with electric heating system, but not all of the intelligent type, and caused much inconvenience to users.Solar SCM control sys
4、tem is its water temperature and water level detection and control of the different. The design of the solar control system to make a full understanding of detailed understanding of its structure and principle. The water temperature and water level detection and control were highlighted. The design
5、of a drive circuit to water pipe cracking, but also manual control when necessary.System design including the hardware design and software design two parts. This control system based on AT89C51, realized the inspection, control and display, and other functions. This paper describes in detail the des
6、ign process of the control circuit, including: the keyboard and LED display circuit, drive circuit, water temperature, water level control circuit, etc. The software design using modular structure, including the main program, keyboard interrupt subroutines, DS12887 update cycle ends interrupt subrou
7、tines, LED display subroutines and early heating time subroutines, etc. Keywords：Microcontroller， solar water heaters，water level detection, temperature control system目录 摘要.ABSTRACT.第一章 绪论.11.1 太阳能热水器的发展概况及市场竞争分析.11.2 太阳能热水器的研究及意义.21.3 本课题研究的主要内容.4第二章 太阳能控制系统.52.1 控制系统组成.52.2 控制装置的工作原理.9第三章 硬件设计.103.1 主要原器件介绍.103.1.1AT89C51 高性能 8 位单片机.103.1.2 数码管显示.123.1.3 数字温度传感器.163.1.4 ADC0832 转换器 .183.1.5 继电器.193.1.6 电磁阀与晶闸管.223.1.7 OP07 低噪声单运放.223.1.8 晶振.233.2 水位检测电路的硬件设计.233.3 水温检测电路的硬件设计.243.4 键盘电路的硬件设计.253.5 驱动电路的硬件设计.273.6 显示电路的硬件设计.27第四章 软件设计.304.1 软件设计原理及设计所用工具.304.2 显示子程序.32参考文献.34结束语.35致谢.
