intelligent field irrigation system (2)
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GUIDED BY,
MISS.SARANYA NATH
LECTURER
DEPARTMENT OF ECE
TKMIT,KARUVELIL
TKMIT,KARUVELIL 1
GROUP MEMBERS
ANJU A CHANDRAN ( 7 )
PARVATHY BABU (47)
SHIMA M PANICKER (61)
VISHNU PRADEEP (71)
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INTRODUCTION
Wireless solution for irrigation
Automatically senses the temperature
Analyze with ADC
Sent SMS through GSM modem Turn on the motor using mobile phone
Automatically turns off when temperature comesdown
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OBJECTIVE
Labor saving and water saving.
Better wireless solution instead ofconventional wired connections.
User can turn on the motor from a remoteplace using the mobile phone.
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BLOCK DIAGRAM
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ATmega 128
MAX 232
GSMMODEM
TemperatureSensor
Motor Driver
Motor
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CIRCUIT DIAGRAM
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CIRCUIT DESCRIPTION
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1. TEMPERATURE SENSOR LM35 is the IC used here. Senses the temperature in the field. Calibrated directly in degree Celsius. Rated for full -55
Celsius to +150 CelsiusLow cost due to wafer level trimming.
LM35 DZ Temperature Sensor
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2. MICROCONTROLLER
AtMEGA 128 is used here.
Programming language : Embedded CCompiler : WinAVR
High performance ,low power 8 bitmicrocontroller.
Advanced RISC Architecture.
Dual programmable serial USARTs.
Master /slave SPI serial interface.
Programmable Watchdog timer with on-chiposcillator.
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3. GSM MODEM
Provides full functional capability to serial devicesto send SMS and data over GSM network.
Supports popular AT command set so that userscan develop applications quickly.
4. MAX 232
Used to convert TTL/RS 232 and vice versa.
Standard voltage range of RS 232 pin is -15 to +15 v.
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WORK DONE SO FAR
Literature Survey.
Studied the data sheet of AtMEGA 128.
Studied about power supply.
Studied different modules of AVR & ADC. Studied about the temperature sensor .
Soldered the temperature sensor LM35
Done programs for port enabling and interfacing
LM35 with AVR .
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POWER SUPPLY
Required DC power is derived from the AC main using a transformer,
rectifier, filter and voltage regulator The voltage is rectified using the bridge rectifier The ripples are removed by capacitive filtering. To provide a stable voltage voltage regulator is used
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Algorithm
Step 1: Start
Step 2: Initialize baud rate
Step 3: Enable transmitter and receiver
Step 4: Initialize ADC and select channel 0Step 5: Enable ADC
Step 6: Check whether ADC conversion is completedor not if completed go to step 6
Step 7: Store the valueStep 8: Transmit to UART
Step 9: Stop
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ADVANTAGES ANDAPPLICATIONS Very safe and secure to use
Fast , effective flawless service
Low power consumption
Easy to use
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CONCLUSION
The remote motor starter presented here is mainlyaimed for helping the farming community.
It provides a cost effective method for irrigationwithout any manual labor.
Especially in agricultural country like India , wehope our project will be a very useful one.
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REFERENCE
Atmel AVR microcontroller primer: programming andinterfacing By Steven F. Barrett, Daniel J. Pac
http://www.datasheetcatalog.com/
http://www.atmel.com/
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http://www.datasheetcatalog.com/http://www.atmel.com/http://www.atmel.com/http://www.datasheetcatalog.com/