自动浇花系统的设计毕业设计论文.doc

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 ADC083 2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 ADC083 2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,通知单片机可以读取转换结果,单片机通过调用中断程序,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;手动部分是由通过关闭单片机电源,由外围电路供电进行浇灌、[ 关键词] STC89C52 干湿度的采集与显示 LED Design 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, prises a soil temperature and humidity acquisition and display, automatic watering system. Soil temperature and humidity acquisition and display in ADC0832 is 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 and the lower limit and the induction circuit into the microcontroller 's soil humidity value pared, when less than the lower limit value, the MCU output a signal to control the watering, high in the upper limit value by the microcontroller output a signal control stop watering; manual part posed of single-chip digital tube into the month and day from real time, through the software programmed timing watering time. Key words : STC89C52 temperature and humidity acquisition in the display counter LED 引言 1 选题的目的和意义随着社会的进步,人们的生活质量越来越高。在家里养养盆花可以陶冶情操,丰富生活。同时盆花可以通过光合作用吸收二氧化碳,净化室内空气,在有花木的地方空气中阴离子聚