毕 业 论 文 ﹙设 计﹚ 自动浇花系统的设计［摘要］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 ADC0832 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 ADC0832 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, ADC0832 根据送来的地址信号选通IN1 通道, 然后对输入的模拟信号进行转换, 转换结束时, EOC 输出高电平, 通知单片机能够读取转换结果, 单片机经过调用中断程序, 读取转换后的数据。最后, 单片机把采集到的湿度数据经过软件程序处理后送到 LCD1602 进行显示。自动浇水系统设计为智能和手动两个部分: 智能浇水部分是经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;手动部分是由经过关闭单片机电源, 由外围电路供电进行浇灌、 [关键词]STC89C52 干湿度的采集与显示 LEDDesign of potted flowerss automatic watering system(Grade 08,Class 3,Major electronics and information engineering , School of physics and Abstract the design of potted plant automatic watering system includes soil temperature and humidity acquisition and display, and the counter setting and display and alarm two parts water. Soil temperature and humidity acquisition and display part, and comprises a soil temperature and humidity acquisition and display, automatic watering system. Soil temperature and humidity acquisition and display in ADC0832is connected with two potentiometers as an induction circuit, the collected soil temperature and humidity value is send to the STC89C52 single chip, then by its transmission to the LCD screen display. Automatic watering system design for intelligent and manual two parts: intelligent watering section through the MCU programming watering the upper limit an...
