INTERNAL GUIDE

P.RAMU- Associative Professor.

WATER LEVEL CONTROLLING USING GSM

M.V.PAVAN KUMAR

CONTENTS

I N T R O D U C T I O N C U R R E N T S C E N A R I O & P R O P O S E D S O LU T I O N S H A R D WA R E A N D S O F T WA R E R EQ U I R E M E N T S B LO C K D I AG R A M F EAT U R E S O F AT 8 9 S 5 2 M I C R O C O N T R O L L E R P I N C O N F I G U R AT I O N LC D ( L I Q U I D C RY S TA L D I S P L AY ) G S M ( G LO B A L SY S T E M F O R M O B I L E ) M A X 2 3 2 L I Q U I D S E N S O R S WO R K I N G P R O C E D U R E A DVA N TAG E S L I M I TAT I O N S & F U T U R E S C O P E A P P L I C AT I O N S

Generally we all know that water is more precious resource and

also there exist less amount of useful(drinking) water sources in the

nature.

So it is our reponsibility to control the wastage of water.

Inorder to over come the wastage of water we had developed a

new project i.e. “water level controller using gsm.”

In this project,the sensors will sens the water level and sends the

information to the gsm,then it sends to user.Depending upon the

received information,user may ON/OFF the motor.

INTRODUCTION

PROPOSED SOLUTIONS

The sensor will sense the water level and sends the information to

the driver of the micro controller. And the micro controller will sends

the information to the motor driver and the motor will be set to

on/off depending up on the signal .

At the same time the GSM will send the message to the user

whether the motor is on/off.

CURRENT SCENARIO

The water is wasted due to over flow.

At the same time, power is also wasted.

Micro controller(AT89S52) LCD display. Dc motor. Power supply. GSM modem. Circuit board. liquid sensors. Keil vision. Micro controller flash

HARDWARE & SOFTWRE REQUIREMENTS:

BLOCK DIAGRAM

LCD DISPLAY

DRIVER DC MOTOR

GSM

LIQUID SENSORS

AT

89S52

POWER SUPPLY

WATER TANK

MAX232

8K Bytes of In-System Programmable (ISP) Flash Memory 4.0V to 5.5V Operating Range 256K Internal RAM 32 Programmable I/O Lines Three 16-bit Timer/Counters Eight Interrupt Sources Full Duplex UART Serial Channel Interrupt Recovery from Power-down Mode Watchdog Timer Dual Data Pointer Power-off Flag

FEATURES OF AT89S52

(A15)(A14)(A13)(A12)(A11)(A10)(A9)(A8)

PIN CONFIGURATION:

RST

vccP1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7

P3.0P3.1P3.2P3.3P3.4P3.5P3.6P3.7

XTAL 1XTAL 2GND

( T2) (T2EX)

(MOSI)(MISO)

(SCK)

(RXD) (TXD)(INT0)(INT1)

T0T1

(WR)(RD)

P0.0P0.1P0.2P0.3P0.4P0.5P0.6P0.7

ALE/PROGPSENP2.7P2.6P2.5P2.4P2.3P2.2P2.1P2.0

(ADO)(AD1)(AD2)(AD3)(AD4)(AD5)(AD6)(AD7)(AD8)

A T 89S52

1234567891011121314151617181920

4039383736353433323130292827262524232221

EA

A liquid crystal display (LCD) is a thin, flat display device made up of any number of color or monochrome pixels arrayed in front of a light source or reflector

Common LCDs connected to the controllers sews are 16X1, 16x2 and 20x2 displays. This means 16 characters per line by 1 line 16 characters per line by 2 lines and 20 characters per line by 2 lines, respectively

LCD (liquid crystal display)

GSM is a cellular network, which means that mobile phones connect to it by searching for cells in the immediate vicinity.

GSM networks operate in four different frequency ranges. Most GSM networks operate in the 900 MHz or 1800 MHz bands.

It is interfaced through TX,RX(P3.0,P3.1) of the microcontroller .

GSM (global system for mobile communication)

It is a level shifter.

operates with single 5v power supply.

To convert TTL logic, say TXD,RXD pins of the microcontroller thus need a converter chip.

It has 4level translators, two of which are RS232 transmitters and two of which are RS 232 receivers.

MAX 232

It has a resistive output that varies with the level of the fluid.

It does away with clunky mechanical floats, and easily interfaces with electronic control systems.

This results in a change in resistance that corresponds to the distance from the top of the sensor to the surface of the fluid.

The sensor's resistive output is inversely proportional to the height of the liquid.

The lower the liquid level, the higher the output resistance the higher the liquid level, the lower the output resistance.

LIQUID SENSORS

WORKING PROCEDURE

USER

DC MOTOR

MICRO CONTROLLER GSM

POWER SUPPLY

ON

LCD

GSM OK ..SENDING MSG…

TANK IS EMPTY

WHEN TANK IS EMPTY

USER

DC MOTOR

MICRO CONTROLLER GSM

POWER SUPPLY

LCD

GSM OK...SENDING MSG…

TANK IS FULL

OFF

WHEN TANK IS FULL

To reduce the wastage of water.

To reduce the wastage of power.

To increase the pump set life.

ADVANTAGES

LIMITATION:

It works only when the power is in ‘ON’ state.

Due to the network problems, the message send by

GSM/USER may not be send within the in time.

FUTURE SCOPE:

By using solar panels we can give power supply to the

sensor circuit and then we can monitor the water level

during power cut also.

LIMITATIONS & FUTURE SCOPE

Applicable in agricultural fields.

Applicable at reservoirs.

Applicable at oil refineries.

Applicable at water plants.

APPLICATIONS