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PRASHANT KR BHARTI
0903EE161005
INTRODUCTION
TYPES OF IRRIGATIONS
BLOCK DIAGRAM
SOIL MOISTURE SENSOR
COMPARATOR
MICROCONTROLLER
CONTROL UNIT
ADVANTAGES
CONCLUSION
Irrigation is the artificial applicationof water to
the land orsoil.
It is used toassist in thegrowing of agricultural
crops, maintenance of landscapes, and
revegetation of disturbed soils in dry areas and
during periods of inadequaterainfall.
irrigation also has a few other uses in crop
production, which include protectingplants
against frost.
DRIP ERRIGATION SPRINKLER
SURFACE IRRIGATION
 Forconversion of change in resistance to change in voltage, thesensor is
connected with a 200 kΩ resistor in series to form a potential divider
arrangement
 It gives a voltage output corresponding to the conductivity of the soil. The
conductivity of soil variesdepending upon theamount of moisturepresent in
it. It increases with increase in the water content of the soil. The higher the
water content in the soil, the lower the electrical resistance.
 The voltage output is taken from the output terminal of this circuit. The
moisturesensor is immersed into thespecimen soil whose moisturecontent is
under test.
 Forthecomparatorcircuit, weare using IC LM 358 which has two
opamps.
 Wehave selected two thresholds: 5 V for logic high and 3 V for logic
low. These two levels are set at the positive terminal of each opamp.
Theoutputof the potential divider is given to the negative terminalsof
theopamps.
 The two opamps are arranged such that when the output of the
potential dividercircuit falls below the presetvalueof loweropamp the
loweropamp gives logic 0 and the upperopamp gives logic 1.
 When the output of potential divider circuit is in between range (5 V
and 3V), then both opamps give logic 1 and when output of potential
divider circuit is above the set value of upper opamp, then the upper
opamp gives logic 0 and loweropamp gives logic 1.
 Theoutputof thecomparatorcircuit is fed to SR Latch
S.no VOLTAGE
RANGE
SOIL
CONDITION
LOGIC OF
OPAMP 1
(UPPER)
LOGIC OF
OPAMP2
(LOWER)
1 >5V EXCESS WET 0 1
2 >3V & < 5V OPTIMUM 1 1
3 <3V DRY 1 0
 8K Bytes of In-System Programmable (ISP) Flash Memory.
 4.0V to 5.5V Operating Range.
 Fully Static Operation: 0 Hz to 33 MHz.
 256 x 8-bit Internal RAM.
32 Programmable I/O Lines.
 Three 16-bitTimer/Counters.
 Eight Interrupt Sources.
 Full Duplex UART Serial Channel.
 Low-power Idle and Power-downModes.
 Interrupt Recovery from Power-down Mode.
 Watchdog Timer.
 Power-off Flag.
 Fast Programming Time
The basic operation of control unit is the
controlling solenoid by microcontroller which is
defined by particularprogram.
solenoid is connected with an output pin of
microcontroller via a relay circuit which is
connected with atransistor.
Electromagnetic device which produces amagnetic
field when electriccurrent passed through it.
Theseare used mainly in opening and closing of
valves.
Operation of valves is done using a relaycircuit.
 A relay is an electrical switch thatusesan electromagnet
to move the switch from the off to on position instead
of a person moving the switch.
 This makes increase inproductivity
 Reduces waterconsumption
Reduces manpower
Much land will beirrigated
The Microcontroller based drip irrigation system
proves to be a realtime feedback control system
which monitors and controls all the activities of drip
irrigation systemefficiently. The present proposal is a
model to modernize the agriculture industries at a
mass scale with optimum expenditure. Using this
system, one can save manpower, water to improve
production and ultimatelyprofit.
THANK
YOU

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Automatic irrigation system

  • 1. Submitted by PRASHANT KR BHARTI 0903EE161005
  • 2. INTRODUCTION TYPES OF IRRIGATIONS BLOCK DIAGRAM SOIL MOISTURE SENSOR COMPARATOR MICROCONTROLLER CONTROL UNIT ADVANTAGES CONCLUSION
  • 3. Irrigation is the artificial applicationof water to the land orsoil. It is used toassist in thegrowing of agricultural crops, maintenance of landscapes, and revegetation of disturbed soils in dry areas and during periods of inadequaterainfall. irrigation also has a few other uses in crop production, which include protectingplants against frost.
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  • 6.  Forconversion of change in resistance to change in voltage, thesensor is connected with a 200 kΩ resistor in series to form a potential divider arrangement  It gives a voltage output corresponding to the conductivity of the soil. The conductivity of soil variesdepending upon theamount of moisturepresent in it. It increases with increase in the water content of the soil. The higher the water content in the soil, the lower the electrical resistance.  The voltage output is taken from the output terminal of this circuit. The moisturesensor is immersed into thespecimen soil whose moisturecontent is under test.
  • 7.  Forthecomparatorcircuit, weare using IC LM 358 which has two opamps.  Wehave selected two thresholds: 5 V for logic high and 3 V for logic low. These two levels are set at the positive terminal of each opamp. Theoutputof the potential divider is given to the negative terminalsof theopamps.  The two opamps are arranged such that when the output of the potential dividercircuit falls below the presetvalueof loweropamp the loweropamp gives logic 0 and the upperopamp gives logic 1.  When the output of potential divider circuit is in between range (5 V and 3V), then both opamps give logic 1 and when output of potential divider circuit is above the set value of upper opamp, then the upper opamp gives logic 0 and loweropamp gives logic 1.  Theoutputof thecomparatorcircuit is fed to SR Latch
  • 8. S.no VOLTAGE RANGE SOIL CONDITION LOGIC OF OPAMP 1 (UPPER) LOGIC OF OPAMP2 (LOWER) 1 >5V EXCESS WET 0 1 2 >3V & < 5V OPTIMUM 1 1 3 <3V DRY 1 0
  • 9.  8K Bytes of In-System Programmable (ISP) Flash Memory.  4.0V to 5.5V Operating Range.  Fully Static Operation: 0 Hz to 33 MHz.  256 x 8-bit Internal RAM. 32 Programmable I/O Lines.  Three 16-bitTimer/Counters.  Eight Interrupt Sources.  Full Duplex UART Serial Channel.  Low-power Idle and Power-downModes.  Interrupt Recovery from Power-down Mode.  Watchdog Timer.  Power-off Flag.  Fast Programming Time
  • 10. The basic operation of control unit is the controlling solenoid by microcontroller which is defined by particularprogram. solenoid is connected with an output pin of microcontroller via a relay circuit which is connected with atransistor.
  • 11. Electromagnetic device which produces amagnetic field when electriccurrent passed through it. Theseare used mainly in opening and closing of valves. Operation of valves is done using a relaycircuit.
  • 12.  A relay is an electrical switch thatusesan electromagnet to move the switch from the off to on position instead of a person moving the switch.
  • 13.  This makes increase inproductivity  Reduces waterconsumption Reduces manpower Much land will beirrigated
  • 14. The Microcontroller based drip irrigation system proves to be a realtime feedback control system which monitors and controls all the activities of drip irrigation systemefficiently. The present proposal is a model to modernize the agriculture industries at a mass scale with optimum expenditure. Using this system, one can save manpower, water to improve production and ultimatelyprofit.