普兴空调控制系统设计
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密 惠 保
摘要
本次设计采用单片机来实现空调的智能控制，该系统以8051芯片为核心。热敏电阻测得后把电压信号经过运算放大器把模拟信号输送给芯片ADC0809，进行A/D转换把模拟信号转换成为数字信号，再把数字信号输送给CPU来控制压缩机的开启、关闭和控制电热丝导通或关断来进行自动除霜。LED数码管显示电路能够时刻显示出空调的当前的工作状态，使空调的使用更简单。报警系统在当空调开启时间超过2min时报警器也提醒应及时关门。工作电压在180V～240V ,当欠压或过压时,禁止启动压缩机并用指示灯显示。ADC0809产生的控制信号经过74LS273锁存防止单片机复位时引起输出控制的误操作，同时也增加了输出驱动能力。
关键词：单片机 空调 LED数码管 传感器 温度采集 除霜
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Abstract
This design uses the shrapnel machine to realize the electric refrigerator intelligent control, this system take 8,051 chips as a core. After the thermistor obtains the cold-storageroom, the freezing room and frost level thickness the voltage signal after the operational amplifier the simulated signal transportation for chip ADC0809, carries on A/D to transform the simulated signal transforms into the digital signal, again controls the digital signal transportation for CPU the compressor to open, the closure and the control heating wire leads passes or shuts off carries on automatically defrosts. The LED numerical code tube display circuit can frequently demonstrate electric refrigerator current active status, makes the electric refrigerator the use to be simpler. The alarm system is higher than
Key word: Monolithic integrated circuit ，Electrical refrigerator，LED numeric Temperature gathering ，Temperature collection ，Eliminate hoarf rost
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[来源：http://think58.com]
[资料来源：http://THINK58.com]
[资料来源：www.THINK58.com]
[版权所有：http://think58.com]