土壤湿度无线检测系统的设计

英文摘要毕业设计论文AbstractThe traditional soil detection system is difficult to wire in the faceof complex terrain conditions,and has the defect that it is difficult torealize real-time transmission of collected information in the first time.However,the wireless detection system of soil humidity can reduce thedependence of the system on manual work and realize the separation of manand machine.This design is a kind of soil humidity wireless detection system,whichuses wireless communication technology to eliminate the restriction ofcomplex environment on soil humidity detection,and can effectively realizethe effective transmission of soil humidity information,so as to facilitatethe monitoring of soil humidity in real time.This system is divided intotwo parts:detection and monitoring.STC89C52RC is used as the control chipand YL-69 humidity sensor is used as the detection end.After A/D conversion,the collected information is transmitted through NRF24L01 wirelesscommunication chip.At the same time,the switch state of the water pumpis controlled by relay.After receiving the information,the monitoringterminal realizes the man-machine dialogue and alarm functions through theLCD display module and the alarm module.The input power supply voltage ofthis design is 5V+0.2V,the detection accuracy is 0-80%,and the wirelesstransmission distance is 5-10m.The design has the characteristics of simplestructure,low cost,convenient installation,practicability,real-timeperformance and miniaturization.Key words:STC89C52RC:Wireless transmission technology:Soil moisturedetection;