基于AVR单片机的盆栽自动浇水系统

The Automatically Watering System for Pot Plant Based on AVR Microcontroller

设计了一种基于AVR单片机的盆栽自动浇水系统。该系统以ATmega16L单片机为主控芯片,利用单片机自带的EEPROM存储器保存浇水的湿度基准阈值,通过按键可调整湿度基准阈值,以适应不同的花卉盆栽生长需要和地域的气候条件;根据温度传感器采集的温度数据自动调整湿度阈值,以保证盆栽在温度变化时的浇水量适中;使用单片机内置的A/D转换器把湿度传感器采集的湿度模拟量转换成当前湿度值,利用单片机内部定时器进行中断计时,以准确调整系统的日期和时间,达到了定时检测浇水及自动调节浇水量的目的。该系统充分利用了ATmega16L单片机资源,简化了系统设计,具有硬件结构简单、成本低、工作稳定等优点。实际测试表明:该系统能根据温湿度对盆栽浇水进行自动控制,实现盆栽浇水无人值守功能,满足了多种条件下盆栽浇水的需求,可有效地用于盆栽浇水的自动化管理。

The article is about the design of an automatically watering system for pot plant. The design of the system is related to the AVR microcontroller, which takes ATmega16L as the main control unit. The system memorizes the humidi- ty base thresholds into the built-in EEPROM memory system, then adjusts the humidity level to different plant growing environment by changing the level of acceptable water amount. Besides, for watering the plants at a right amount, the system automatically adjusts the humidity thresholds by combining the humidity base thresholds and the data gathering by the temperature sensor, and then converts the current humidity by the built-in A/D converter. Furthermore, the system can adjust the time and date accurately by the internal timer, and achieves the purposes of checking and watering at regular time. The tests demonstrate that the system can automatically control the pot plant irrigation amount and time according to the temperature and humidity, and effectively work for the pot plant irrigation automated management.