基于单片机的电冰箱控制系统设计

摘　要

本设计介绍了一种用单片机开发的智能电冰箱控制系统。该系统以 MCS-51单片机为核心，分为温度采集电路、除霜电路、键盘电路、显示电路、制冷压缩机和除霜电热丝启停控制电路等模块并对系统的工作原理作了详细说明。热敏电阻检测原件检测到冷藏室、冷冻室温度及霜层厚度后，已电压信号经放大器传递给ADC0809 A/D转换器转换成为数字信号。8051芯片把ADC0809传递来的数字信号与系统设置的温度进行比较。通过软件程序来控制压缩机及电加热器的通、断，来实现温控目的和自动除霜功能。声控报警系统时刻监视电冰箱内温度和提醒主人及时关门。LED数码显示使人更简单、明了的了解电冰箱的工作状态。

关键词：单片机 温度采集 除霜 电冰箱

Abstract

This design introduced one kind of the intelligent electric refrigerator control system which develops with the monolithic integrated circuit. This system take the MCS-51 monolithic integrated circuit as a core, divided into the temperature gathering electric circuit, defrosts the electric circuit, the keyboard electric circuit, the display circuit, the refrigeration compressor and defrosts the heating wire to open stops module and has given the specify to the system principle of work and so on control circuit. After the thermistor examination original part examines the cold-storageroom, the freezing room temperature and frost level thickness, the voltage signal has transmitted after the amplifier for ADC0809 the A/D switch transforms into the digital signal. 8051 chips the digital signal and the system establishment temperature which transmit ADC0809 carry on the comparison. Controls the compressor and the electric heater through the software procedure passes, breaks, realizes warm controls the goal and automatically defrosts the function. In the voice control alarm system time surveillance electric refrigerator the temperature and reminds the master promptly to close a door. The LED numerical code demonstrated made the person to be simpler, the bright understanding electric refrigerator active status. [版权所有：http://think58.com]

Key words :  Monolithicintegrated circuit    Temperature gathering    Defrosts

Electric refrigerator [版权所有：http://think58.com]