wireless fire extinguisher

DRK Institute of Science & TechnologyDepartment of Electronics & Communication

Engineering

Project- Seminar

DATE: 20-04-2012

Wireless Fire Extinguisher Vehicle

PRESENTED BY:G.PRIYANKAB.LAKSHMI SWATHIC.GOWTHAMIS.DIVYA

PROJECT GUIDE:

M.BHANUVARDHAN REDDY

DRK Institute of Science & TechnologyDepartment of Electronics & Communication

Engineering

Project- Seminar

DATE: 20-04-2012


DRK Institute of Science & Technology


Project- Seminar

Department of Electronics & Communication Engineering

Project- Seminar

A fire extinguisher is an active fire protection device A fire extinguisher is an active fire protection device used to extinguish or control small fires, often in used to extinguish or control small fires, often in emergency situations.emergency situations.

A robot is a mechanical or virtual intelligent agent A robot is a mechanical or virtual intelligent agent that can perform tasks automatically or with that can perform tasks automatically or with guidance, typically by remote control.guidance, typically by remote control.

DATE: 20-04-2012

DRK Institute of Science & TechnologyWireless Fire Extinguisher

Project- Seminar


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The main objective of the project is to extinguish fire The main objective of the project is to extinguish fire using a robotic vehicle which is remotely controlled using a robotic vehicle which is remotely controlled through RF technology.through RF technology.

RF transmitter module works as a remote to control the RF transmitter module works as a remote to control the motion of the robot either to move it forward or backward motion of the robot either to move it forward or backward and the motion of the water pipe up and down of the robot and the motion of the water pipe up and down of the robot through which it throws water to extinguish the fire.through which it throws water to extinguish the fire.

On the robot RF receiver module is placed that receives On the robot RF receiver module is placed that receives commands from the transmitter and acts accordingly.commands from the transmitter and acts accordingly.

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DATE : 20-04-2012

We are living in the Embedded World and surrounded with many embedded products.

An embedded system is a combination of computing H/W and S/W, and perhaps additional mechanical or other parts, designed to perform a specific function.

An embedded system is a component with in some larger system.



Project- Seminar

DATE : 20-04-2012

APPLICATIONS:

Military and aerospace embedded software applications.

Communication applications.

Industrial automation and process control software.

Mastering the complexity of applications.

Reduction of product design time.

Real time processing of ever increasing amounts of data.

Intelligent, autonomous sensors.


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TRANSMITTERTRANSMITTER BLOCKBLOCK DIAGRAMDIAGRAM

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RECEIVERRECEIVER BLOCKBLOCK DIAGRAMDIAGRAM

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A microcontroller is a small computer on a single integrated A microcontroller is a small computer on a single integrated circuit containing a processor core, memory, and circuit containing a processor core, memory, and programmable input/output peripherals.programmable input/output peripherals.

Microcontrollers are designed for embedded applications, in Microcontrollers are designed for embedded applications, in contrast to the microprocessors used in personal computers or contrast to the microprocessors used in personal computers or other general purpose applications.other general purpose applications.

RAM ROM

I/O Port

Timer Microcontroller

A single chipCPU

Serial COM Port

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• The 2051 is a 20 pin version of the 8051The 2051 is a 20 pin version of the 8051

• 128 x 8-bit Internal RAM 128 x 8-bit Internal RAM

• 15 Programmable I/O Lines 15 Programmable I/O Lines

• Two 16-bit Timer/Counters Two 16-bit Timer/Counters

• Six Interrupt Sources Six Interrupt Sources

• Programmable Serial UART Channel Programmable Serial UART Channel

• On-chip Analog Comparator On-chip Analog Comparator

• Low-power Idle and Power-down Modes Low-power Idle and Power-down Modes

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AT89C2051 PIN DIAGRAMAT89C2051 PIN DIAGRAM

DATE: 20-04-2012


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AT89C52AT89C52 is an 8-bit microcontroller and belongs to is an 8-bit microcontroller and belongs to Atmel's 8051 family. Atmel's 8051 family.

AT89C52 has 8KB of Flash programmable and erasable AT89C52 has 8KB of Flash programmable and erasable read only memory (EPROM) and 256 bytes of RAM. read only memory (EPROM) and 256 bytes of RAM. AT89C52 has an endurance of 1000 Write/Erase cycles, AT89C52 has an endurance of 1000 Write/Erase cycles, which means that it can be erased and programmed to a which means that it can be erased and programmed to a maximum of 1000 times.maximum of 1000 times.

Similar to the 8051 microcontroller it has 32 Similar to the 8051 microcontroller it has 32 Programmable I/O LinesProgrammable I/O Lines and and Full Duplex UART Serial Full Duplex UART Serial ChannelChannel..

DATE: 20-04-2012


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The main differences between AT89C51 and AT89C52 have been tabulated below.

AT89C52 AT89C51

RAM 256 Bytes 128 Bytes

Flash 8KB 4KB

Number of Timers/counters

3(16-bit wide) 2(16-bit wide)

Number of interrupt Sources

8 6

The two microcontroller they are very similar in their pin configurations and operations except that pins, P1.0 and P1.1 are multiplexed to correspond to Timer2 operations in AT89C52.

DATE: 20-04-2012


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An electrical battery is a combination of one or more electrochemical cells.

They are used to convert stored chemical energy into electrical energy.

The chemical reaction is allowed to continue only when a conductive path is created from one side of the cell to the other.

The cell "dies" when the chemical reaction has run its course and can no longer separate electrons from protons.

DATE: 20-04-2012


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The voltage source in a circuit may have fluctuations and would not give the fixed voltage output.

A voltage regulator is an electrical device designed to automatically maintain a constant voltage level.

Most digital logic circuits and processors need a 5 volt power supply.

To make a 5 volt power supply, we use a LM7805 voltage regulator IC .

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BATTERY RECTIFIER FILTER

REGULATORLOAD


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The RF module, as the name suggests, operates at Radio The RF module, as the name suggests, operates at Radio Frequency. Frequency.

This RF module comprises of an This RF module comprises of an

RF Transmitter RF Transmitter

RF ReceiverRF Receiver

The transmitter/receiver pair operates at a frequency The transmitter/receiver pair operates at a frequency of 434 MHzof 434 MHz

An RF transmitter receives serial data and transmits it An RF transmitter receives serial data and transmits it wirelessly through RF through its antenna. The wirelessly through RF through its antenna. The transmission occurs at the rate of 1Kbps - 10Kbps. transmission occurs at the rate of 1Kbps - 10Kbps.

DATE: 20-04-2012


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The transmitted data is received by an RF receiver The transmitted data is received by an RF receiver operating at the same frequency as that of the transmitter.operating at the same frequency as that of the transmitter.

In this RF system, the digital data is represented as In this RF system, the digital data is represented as variations in the amplitude of carrier wave. This kind of variations in the amplitude of carrier wave. This kind of modulation is known as Amplitude Shift Keying (ASK).modulation is known as Amplitude Shift Keying (ASK).

An ASK transmitter draws no power when transmitting An ASK transmitter draws no power when transmitting “zero” while fully suppressing the carrier frequency thus “zero” while fully suppressing the carrier frequency thus consume significantly low power in battery operation. consume significantly low power in battery operation. When logic “one” is sent carrier is fully on. When logic “one” is sent carrier is fully on.

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The ST-TX01-ASK is an ASK Hybrid transmitter module.

ST-TX01-ASK is designed by the with an effective low cost, small size, and simple-to-use for designing.

Frequency Range: 315 / 433.92 MHZ.

Supply Voltage: 3~12V.

Output Power: 4~16dBm

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The ST-RX02-ASK is an ASK Hybrid receiver

module.

Receiver Frequency: 315 / 433.92 MHZ

Operation temperature range: 20﹣ ℃ ～＋ 70℃

Operation voltage: 5 Volts.

Supply Current: 3.5mA

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The encoder coverts the parallel data into serial data while the decoder converts serial data into parallel data

Operating voltage: from 2.4V to 12V

The oscillator frequency of the value of decoders is 50 times the oscillator frequency of encoder.

C is internally built so a change in R value between the 15 and 16 pin’s will determine oscillators frequency.

In decoder IC we go for a value approximately equal to 51kohms one can chose other values based on the graph.

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PRINCIPLE:

A current-carrying conductor generates

a magnetic field, when this is then

placed in an external magnetic field, it

will experience a force proportional to

the current in the conductor, and to the

strength of the external magnetic field.

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L293D is a dual H-bridge motor driver integrated circuit (IC).

Motor drivers act as current amplifiers since they take a low-current control signal and provide a higher-current signal.

This higher current signal is used to drive the motors.

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If enable 1and pin number 2 are high leaving pin number 7 as low then the motor rotates in forward direction.

If enable 2 and pin number 10 are high leaving pin number 15 as low then the motor rotates in forward direction.

If enable 1 and pin number 2 are low leaving pin number 7 as high then the motor rotates in reverse direction.

If enable 2 and pin number 15 are high leaving pin number 10 as low then the motor rotates in forward direction.

DATE: 20-04-2012


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Relays are remote control electrical switches that are controlled by another switch.

Control a high-voltage circuit with a low-voltage signal

Relays have two circuits. A control circuit and a load circuit. The control circuit has a small control coil while the load circuit has a switch. The coil controls the operation of the switch.

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DATE : 20-04-2012

Microcontrollers have internal pull up resistors hence when a port pin is HIGH an output current of 5v/10k = 0.5ma flows through this internal pull up resistor.

BC547 transistor will require enough base current to make sure it remains saturated and provide the necessary collector current i.e. 70ma. The gain of BC547 is 100 so we need to provide at least 70ma/100 = 0.7ma of base current.


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DATE : 20-04-2012

Keil is a German based Software development company.

It provides several development tools likeIDE (Integrated Development environment)Project ManagerSimulatorDebuggerC Cross Compiler, Cross Assembler, Locator/Linker


Project- Seminar


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DATE : 20-04-2012

The steps to develop a microcontroller project using keil:

Create source files in C or assembly.

Compile or assemble source files.

Correct errors in source files.

Link object files from compiler and assembler.

Test linked application.


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DATE : 20-04-2012

Semi automated vehicle. Risk free. Small and handy.

Cannot sense the heat. Sensitive components. Less communication range.


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DATE : 20-04-2012

To put off outdoor fires.

Irrigation for agricultural purpose.

Military purpose.


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DATE : 20-04-2012

Voice operated fire extinguisher.

Robot can be made fully automatic by adding heat sensors.

A wireless camera can be placed on the body of the robot so that it can be used as an indoor fire extinguisher.


Project- Seminar


Project- Seminar

DATE : 20-04-2012

It is an interesting project that challenges to design a small robot that is capable of extinguishing a fire. A solid and reliable design for this project has been constructed and tested with promising results.


Project- Seminar


Project- Seminar

DATE : 20-04-2012

wireless fire extinguisher

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