Flood Management and Control Using GSM

8/8/2019 Flood Management and Control Using GSM

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ABHIJEET JADHAV

KARTHIK MADANGOPALARPIT SANCHETI

RAKESH BHARADWAJ


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BLOCK DIAGRAM:


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BLOCK DIAGRAM CONSISTS OF:

Water level sensor

Infrared Sensor

Microcontroller

Motor Driver circuit

LCD display

Hooter

GSM Modem Interface


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WATER LEVEL SENSOR:

Here's an extremely simple water level sensor which will sense thelevel of flood that keeps the water level between two predefinedlevel. Due to the high input impedance of the LM311 IC (U1),practically no electrolysis of the metal is observed, and any non-

toxic metal could successfully be used as sensors without anydeterioration.

The LM311 was chosen for this circuit because it contains a built-in npn transistor at the output. The user sets the inverting input,which is kept at a voltage level determined by the voltage divider.

The non-inverting input is connected to sensor B for lower-leveldetection of the water.


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This circuit uses an infrared (IR) beam system which transmits theinfrared signal that is of 38 to 40 KHz signal. When interrupted byany device it will sound an alarm and simultaneously it will begiven to the microcontroller for further processing.

When the beam is broken a relay is tripped which can be used tosound a bell or alarm.

The IR beam is very strong. Distances over 25 yards (8 to10meters) can be monitored. A 12VDC unregulated supply is required

to power the kit. Infrared (IR) radiation is electromagnetic radiation of a wavelength

longer than that of visible light, but shorter than that of

microwaves.

INFRARED SENSOR :


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MICROCONTROLLER:-

The AT89S52 is a low-power, high-performance CMOS 8-bit

microcontroller with 8K bytes of in-system programmable Flash memory.The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer.

By combining a versatile 8-bit CPU with in-system programmable Flashon a monolithic chip, the Atmel AT89S52 is a powerful microcontrollerwhich provides a highly-flexible and cost-effective solution to manyembedded control applications.

AT89S52 is designed with static logic for operation down to zerofrequency and supports two software selectable power saving modes:

1. The Idle Mode: It stops the CPU while allowing the RAM,timer/counters, serial port, and interrupt system to continue functioning.

2. The Power-down mode: It saves the RAM contents but freezes theoscillator, disabling all other chip functions until the next interrupt orhardware reset


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FEATURES:

Compatible with MCS-51 Products

8K Bytes of In-System Programmable (ISP) Flash Memory

Endurance: 1000 Write/Erase Cycles

4.0V to 5.5V Operating Range Fully Static Operation: 0 Hz to 33 MHz

Three-level Program Memory Lock

256 x 8-bit Internal RAM

32 Programmable I/O Lines

Three 16-bit Timer/Counters

Eight Interrupt Sources

Full Duplex UART Serial Channel

Low-power Idle and Power-down Modes

Interrupt Recovery from Power-down Mode

Watchdog Timer

Dual Data Pointer

Power-off Flag

MICROCONTROLLER:


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MOTOR DRIVER:

The Device is a monolithic integrated high voltage, high currentfour channel driver designed to accept standard DTL or TTL logiclevels and driven inductive loads (such as relays, DC and steppingmotors) and switching power transistors.

A separate supply input is provided for the logic, allowingoperation at a lower voltage and internal clamp diodes areincluded.

This device is suitable for use in switching applications atfrequencies up to 5 kHz. The L293DD is assembled in a 20 leadsurface mount which has 8 center pins connected together andused for heat sinking.


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LCD:

LCD is used to indicate the blockage in pipe by displaying thenumber of pipe which is predefined.

We are using 2x16 Serial LCD Display Module.

It will also display the flood chances in the area.


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BUZZER:

The word "buzzer" comes from the rasping noise that buzzersmade when they were electromechanical devices, operated fromstepped-down AC line voltage at 50 or 60 cycles.

Buzzer or beeper is a signaling device, usually electronic, typicallyused in automobiles, household appliances such as a microwaveoven, or game shows.


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GSM modem is interfaced using max232. This modem helps us to sendsms to the control room which would make the squad aware about thefloods and blockages.

Now that we have the 8 bit value in the 89S52, we want to send thatvalue to the PC. The 89S52 has a built in serial port that makes it very

easy to communicate with the PC's serial port. Butthe 89S52 outputs are 0 and 5 volts and we need +10 and -10 volts

to meet the RS232 serial port standard. The easiest way to get these

values is to use the MAX232.

The MAX232 acts as a buffer driver for the processor. It accepts the

standard digital logic values of 0 and 5 volts and converts them to theRS232 standard of +10 and -10 volts.

It also helps protect the processor from possible damage from static that

may come from people handling the serial port connectors.

MODEM INTERFACE:


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PIN DIAGRAM:


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Flood Management and Control Using GSM