摘 要
本设计采用STC89C51单片机为核心来设计智能电热水器。本设计也对单片机控制电热水器实现智能化的可能性进行了分析，利用温度传感器、和继电器等来完成本设计。在硬件设计方面，主要对单片机最小系统及其扩展、电源电路、键盘显示及接口电路、水温检测电路、报警电路进行了详细介绍。还详细介绍了设计中应用到的主要芯片的性能和特点，包括STC89C51、DS18B20等。在软件设计方面，采用C语言编程。 该智能电热水器设计完善，实现方案简单易行。采用软件设计来控制，可以实现智能检测水温，智能加热，并且提高了整机的可靠性及准确性。
关键词：STC89C51，DS18B20，智能
ABSTRACT
As technology make a good progress, the applications of single-chip microcomputer become mature all the time. The single-chip microcomputer integrates the various components in a chip, uses the internal bus structure, reduces the connection in different chips, enhanced greatly the reliability and anti-jamming capability. In the development of single-chip microcomputer, due to its excellent cost performance, high integration, small size, high reliability, it has been used as a control center all the time.
Since the birth of single-chip microcomputer, it began to walk into a human’s life, such as washing machines, refrigerators, electronic toys, DMB, which equipped with the single-chip microcomputer, and improved their intelligence, ability. People, who used them, will love them better. The single-chip microcomputer makes human’s life more convenient, comfortable and colorful. As a result, I use single-chip microcomputer to design intelligent electric water heaters.
This paper mainly discusses the intelligent electric water heater how to work. To achieve system goals, in deep analysis of the STC89C51, I made a set of simple and practical control system design. The system is mainly to use single-chip microcomputer to control centers, with specific hardware architecture and the corresponding software design, thus the intelligence of the water heater would become true.
Keywords: single-chip microcomputer, controller, intelligence
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