Microcontroller based irrigation

ADVANCED IRRIGATION SYSTEM USING SOIL MOISTURE SENSOR

PROJECT GUIDEDr S AKHILA

(P16)

L Kajikho

Bikram Pukhrambam Singh

Sameep Karki

Manish K Sah

• Today, India ranks second in the world

in farm output with 64% of cultivated land dependent on

monsoons.

• Irrigation accounts for 55-70% of

water usage in India.

• Nearly 60% of the water used in

irrigation is wasted.

• In this project water is conserved

by using microcontroller-based

system

• ‘Smart Orchid soil moisture monitoring system based on wireless communication technology’ by Ye Na & Liu Junfeng’

Isight on the system cored with a low-power microprocessor

Insight on achieving a wide range of influence on soil moisture and intelligent control of data in fixed memory.

Insight on achieving a 24hr uninterrupted monitoring.

Insight on serial non-volatile data memory chip for storage and display device, that is based on I2C bus, in turn using multifunctional memory chip of the ferroelectric technology which contains RTC.

• ‘Precision Agriculture’ By-Hemanth Gowda C V, Kaveen Kumar M K, Nikhil D G, Prathap J

-Knowledge on the design maily consisting of Wireless Master device and wireless Slave device information unit that’s based on Zigbee technology and is realized using GMS module and concentrated on low power consumption.

- Knowledge on achieving low power consumption using ARM

Cortex M0.

-Knowledge on sensor network powered by solar panel with

rechargeable battery that works for long time.

• Automatic Plant irrigation System’ By- Amit Yadav, Rahul Dev,

Ravinder Kumar, Shwetank Singh.

-Knowledge of automatic system designed with low cost microcontroller.

-Knowledge on designed soil moisture sensor designing using comparator

-Knowledge on interfacing RTC and LCD.

• ‘Water Saving irrigation automatic water control sytem based on internet of thing’ By-Zhang Feng

-Knowledge on water conserving sytem by controlling irrigation water .

-Knowledge on design on wireless sensor network and internet technology of farmland automatic irrigation control.

-Knowledge on use of Mobile or PDA can easily used soil moisture content online monitor and controlling to realize the irrigation automation.

User sets the threshold value

Moisture sensor reads the moisture contained in the soil and feeds to the microcontroller

Microcontroller compare the sensor input and the threshold value

If the sensor input value is less than 30%,plants get watered or else it continues to read the moisture value

The watering stops till the moisture contain reaches the threshold value

#include <LiquidCrystal.h> //library to interface LCD

#include <Wire.h>

#include "RTClib.h“ //library to interface RTC

LiquidCrystal lcd(12,11,5,4,3,2);

RTC_DS1307 rtc;

const int moisture_sensor=A3; //Analog input pin A3 is declare to read soil sensor value

const int relay_out=8; //output pin to control relay

int MAX; //variable to hold threshold value

void setup ()

{

Serial.begin(57600);

#ifdef AVR

Wire.begin();

#else

Wire1.begin(); // Shield I2C pins connect to alt I2C bus on Arduino uno

#endif

rtc.begin(); //Initialized RTC

lcd.begin(16,2); // Initialized LCD to 16X2

pinMode(relay_out,OUTPUT); //define relay_out pin as output pin

pinMode(6,INPUT); //define pin no. 6

lcd.print(" Welcome "); //instruction to display to LCD

lcd.setCursor(0,1); //instruction to move cursor

lcd.print(" P16 ");

delay(1000); //delay of 1sec

lcd.clear(); //clear LCD

}

void loop ()

{

int m=(-analogRead(moisture_sensor)+1023)/10;

lcd.clear();

if(digitalRead(6)==LOW)

{

lcd.clear();

DateTime now = rtc.now();

lcd.print(now.year(), DEC); //get year

lcd.print('/');

lcd.print(now.month(), DEC); //get month

lcd.print('/');

lcd.print(now.day(), DEC); //get day

lcd.setCursor(0,1);

lcd.print(now.hour(), DEC); //get hour

lcd.print(':');

lcd.print(now.minute(), DEC); //get minute

lcd.print(':');

lcd.print(now.second(), DEC); //get second

delay(1000); //display for 1 second

lcd.clear();

lcd.print("Moisture Content");

lcd.setCursor(0,1);

lcd.print(m);

lcd.print('%');

delay(1000);

lcd.clear();

if(m==30) //instruction to control relaydigitalWrite(relay_out,HIGH);

else if(m>=MAX)digitalWrite(relay_out,LOW);

elsedigitalWrite(relay_out,HIGH);

lcd.print("threshold value");lcd.setCursor(0,1);lcd.print(MAX);lcd.print('%');

delay(1000);lcd.clear();

}else{

lcd.clear(); //instructions to setup threshold value

MAX=m;lcd.print("new value");

lcd.setCursor(0,1);lcd.print(MAX);lcd.print('%');delay(1000);lcd.clear();

}}

• The farmers working in the farm lands

are solely dependent on the rains and bore wells for irrigation of land.

• Even if the farm land has a water-pump, manual intervention by farmers is required to turn the pump on/off whenever needed.

• Our project will help the farmers by removing manual intervention controlled by microcontroller using

moisture sensor and giving highly

efficient in conservation of water