单片机的光控浇花器的设计.rar

上传者: z703667758 | 上传时间: 2021-07-24 09:04:37 | 文件大小: 788KB | 文件类型: RAR
本设计主要的内容是土壤湿度检测电路的设计与制作。该电路的工作原理是由STC89C52单片机和TLC2543组成系统的核心部分,湿度传感器将采集到的数据直接传送到TLC2543的IN端作为输入的模拟信号。选用湿度传感器和AD转换,电路内部包含有湿度采集、AD转换、单片机译码显示等功能。单片机需要采集数据时,发出指令启动A/D转换器工作,TLC2543根据送来的地址信号选通IN0通道,然后对输入的模拟信号进行转换,转换结束时,单片机可以读取转换结果,单片机通过调用读取转换函数,读取转换后的数据。最后,单片机把采集到的温度湿度光照数据经过软件程序处理后送到LCD1602进行显示。智能浇水部分是通过单片机程序设计浇水的上下限值与感应电路送入单片机的土壤湿度值相比较,当低于下限值时,单片机输出一个信号控制浇水,高于上限值时再由单片机输出一个信号控制停止浇水;

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