Tezislər / Theses

THE 3
rd
 INTERNATIONAL SCIENTIFIC CONFERENCES OF STUDENTS AND YOUNG RESEARCHERS 
dedicated to the 99
th
anniversary of the National Leader of Azerbaijan Heydar Aliyev
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the solar panel, it should be able to generate the necessary power amount 
to operate efficiently the water pump and the control system. 
The smart irrigation model setup shown in Figure 1 depicts all the 
component connection of the system; solar panel, electronic board with 
control, relay switch, smart phone, LCD, water pump, moisture sensors, and 
GSM for Arduino. The control algorithm that considers the threshold values 
for the operation and communication signals has been programmed in 
Arduino Uno and then uploaded to microcontroller.Three libraries of Arduino, 
one for the SIM900 component, second for the call function, third for the LCD 
which connected to the I2C were utilized for algorithm development.
Arduino is programmed to implement two cases, automatic irrigation and 
semi-manually controlled by the user through its mobile phone. The four soil 
moisture sensors provide four different values of moisture content of the soil 
for the same land area but at different positions where moisture values can 
range from 0 to 1023, indicate extremely wet, extremely dry 
respectively.Then, the collected data from sensors is sent to Arduino which 
will compare these values with the threshold values that were beforehand 
defined at the program uploaded to the microcontroller. 
Figure 1. 
Smart irrigation system setup 
If two sensors measures that moisture level is higher than 800, pump 
turned on, when all moister sensors reach value less than 400, the pump will 
terminate its operation. On the other hand, when two out of four sensors 
depict moisture more than 800, the system automatically will be turned on to 
irrigate the area until the four sensors show humidity measurement less than 
400. With regards to semi-manually controller system, when two out of four 

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