摘要
系统的主控芯片采用AT89C52单片机,外围主要由数据处理电路、湿度传感器、LED动态显示电路、超限报警电路等组成。A/D转换电路将湿度传感器检测到的土壤湿度模拟量转换成数字量送给单片机,动态显示于数码管上。若土壤湿度低于预置值,系统将发出语音报警同时启动电磁阀进而启动电机进行灌水。单片机控制的智能节水灌溉系统可以根据监测的土壤湿度,及时给土壤补充水分,使土壤达到最佳湿度,促进作物生长。
AT89C52 is used as the master chip in this system; the peripheral is mainly composed of a data processing circuit, a humidity sensor, LED dynamic display circuit, alarm circuit, and so on. A/D conversion circuit makes conversion of the signals detected by humidity sensor from analog to digital one, and displaying it in the LED display. If the soil humidity is lower than the preset value, the system will arise an acousto-optic alarm, at the same time, the solenoid valve will be started up to irrigate. The present water saving irrigation system controlled by MCU can irrigate timely and automatically according to the soil humidity so as to achieve an optimized soil humidity.
出处
《电子技术（上海）》
2013年第9期62-64,61,共4页
Electronic Technology
关键词
单片机
智能灌溉
智能监控
AT89C52
Intelligent Irrigation
Intelligent Monitoring
