the smart irrigation system by tran Quoc Huy, dai hoc quoc gia ha noi

the smart irrigation system

1. VIETNAM NATIONAL UNIVERSITY, HANOI HANOI UNIVERSITY OF SCIENCE THE SMART IRRIGATION SYSTEM Student : Tran Quoc Huy, K57 International Physics Supervisor: Le Quang Thao Project Hanoi, 4 - 2015

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3. CONTENTS OVERVIEW OF SYSTEM PRINCIPLES AND ALGORITHM RESULTS CONCLUSION 2/14

4. THE OVERVIEW OF SYSTEM 3/14

5. PRINCIPLES AND ALGORITHM Soil moisture definition (1):   Mw: the weight of water, which is in the soil sample. Ms : the weight of dry soil at 105°C. 4/14

6. PRINCIPLES AND ALGORITHM 5/14 Soil moisture detector [1] Rain detector

7. PRINCIPLES AND ALGORITHM PCB size 22.0mm X 20.5mm X 1.6mm Working voltage 3.3 or 5V DC Operating voltage 3.3 or 5V DC Measurement range 20-95%RH；0-50℃ Resolution 8bit (temperature), 8bit ( Humidity ） Compatible interfaces 2.54 3-pin interface and 4-pin Grove interface(1) Wenzhou Zhengke Electromotor Co., Ltd . 6/14

8. PRINCIPLES AND ALGORITHM Lagrange polynomials used for   polynomial interpolation 7/14

9. PRINCIPLES AND ALGORITHM. Operation Algorithm Lagrange Polynomials 8/14 ALGORITHM

10. 9/14 EXPERIMENT RESULTS

11. EXPERIMENT RESULTS 10/14

12. FINAL SYSTEM 11/14

13. CONCLUSION. The advantages Meet the requirements The speed of processing is fast Less error when working Low cost The disadvantages Low accuracy Just model for study Using the higher accuracy methods and sensors, design the real system and c ommunication with wireless network 12/14

14. REFERENCE. ASTM D2216 DHT11 Humidity & Temperature Sensor D-Robotics UK ( www.droboticsonline.com ). MEASURING SOIL WATER FOR IRRIGATION SCHEDULING: MONITORING METHODS AND DEVICES, Publish by North Carolina Cooperative Extension Service. Arduino Modules - Rain Sensor by   Reichenstein7 , ( http ://www.instructables.com / ). The Gartden bot ( http://gardenbot.org / ). Độ ẩm đất với cây trồng , NXB Lao Động , 2006. 13/14

15. Thank you for attention! 14/14