Fire Fighting Robot Remotely Operated by Android Applications

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Fire Fighting Robot Remotely Operated by Android
Applications
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Fire Fighting Robot Remotely Operated by Android
Applications
Introduction

• The project is designed to develop a fire
  fighting robot using android application device
  for remote operation. The robotic vehicle is
  loaded with water tanker and a pump which is
  controlled over wireless communication to throw
  water. An 8051 series of microcontroller is used
  for the desired operation. At the transmitting
  end using android application device, commands
  are sent to the receiver to control the movement

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Fire Fighting Robot Remotely Operated by Android
Applications
Block Diagram
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Fire Fighting Robot Remotely Operated by Android
Applications
Hardware Requirements

• 8051 series Microcontroller
• Push Button
• DC Motors
• Relay
• Transistor
• Robot Body with Water Tank
• Resistors
• Capacitors
• Diode
• Battery
• Bluetooth Device

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Fire Fighting Robot Remotely Operated by Android
Applications
Software Requirements

• Keil compiler
• Languages Embedded C or Assembly
• Android Application

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Fire Fighting Robot Remotely Operated by Android
Applications
Project components
Different components used are as follows

• ATMEGA8L-8PU Microcontroller
• The AVR is a modified Harvard architecture 8-bit
  RISC single chip microcontroller developed
  by Atmel.
• It uses on chip flash memory for program storage
• It is a High-performance, Low-power AVR 8-bit
  Microcontroller with 130 Powerful
  Instructions - Most Single Clock Cycle Execution.

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Fire Fighting Robot Remotely Operated by Android
Applications
Project components

• 2. HC-05 Bluetooth Module
• The HC-05 small size Bluetooth TTL transceiver
  module are designed for serial communication (SPP
  - serial port profile).
• It allows your target device to both send or
  receive TTL data via Bluetooth technology without
  connecting a serial cable to your computer.
• It has Coverage up to 30 ft / 10 m with Built in
  antenna.
• It has Power input 3.3VDC (Bluetooth module).

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Fire Fighting Robot Remotely Operated by Android
Applications
Development of Android APP

• Android is an Open Source operating system based
  on the Linux Kernel
• Designed primarily for touchscreen mobile devices
  such as smartphones and tablets.
• It was built to be truly open.
• For example, an application can call upon any of
  the phones core functionality such as making
  calls, sending text messages, or using the
  Bluetooth, camera etc.

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Fire Fighting Robot Remotely Operated by Android
Applications
Bluetooth APIs

• Using the Bluetooth APIs, an Android application
  can perform the following
• Scan for other Bluetooth devices
• Query the local Bluetooth adapter for paired
  Bluetooth devices
• Establish RFCOMM channels
• Connect to other devices through service
  discovery
• Transfer data to and from other devices.

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Fire Fighting Robot Remotely Operated by Android
Applications
RF Remote Control

• The circuit uses HT 12E, HT 12D encoder and
  decoder.
• 433MHz ASK transmitter and receiver is used for
  the remote control.

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Fire Fighting Robot Remotely Operated by Android
Applications
Features of RF

• Range in open space(Standard Conditions) 100
  Meters
• RX Receiver Frequency 433 MHz
• RX Typical Sensitivity 105 Dbm
• RX Supply Current 3.5 mA
• RX IF Frequency 1MHz
• Low Power Consumption

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Fire Fighting Robot Remotely Operated by Android
Applications
Features of RF

• Easy For Application
• RX Operating Voltage 5V
• TX Frequency Range 433.92 MHz
• TX Supply Voltage 3V 6V
• TX Out Put Power 4 12 Dbm

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Fire Fighting Robot Remotely Operated by Android
Applications
RF Encoder Decoder

• The HT 12E Encoder ICs are series of CMOS LSIs
  for Remote Control system applications.
• They are capable of Encoding 12 bit of
  information which consists of N address bits and
  12-N data bits.
• The HT 12D ICs are series of CMOS LSIs for remote
  control system applications.
• This ICs are paired with each other.

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Fire Fighting Robot Remotely Operated by Android
Applications
RF Encoder Decoder

• For proper operation a pair of encoder/decoder
  with the same number of address and data format
  should be selected.
• The Decoder receive the serial address and data
  from its corresponding decoder, transmitted by a
  carrier.
• Using an RF transmission medium and gives output
  to the output pins after processing the data.

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Fire Fighting Robot Remotely Operated by Android
Applications
Motor Driver L293D

• 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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Fire Fighting Robot Remotely Operated by Android
Applications
Motor Driver L293D

• L293D contains two inbuilt H-bridge driver
  circuits.
• In its common mode of operation, two DC motors
  can be driven simultaneously, both in forward and
  reverse direction.

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Fire Fighting Robot Remotely Operated by Android
Applications
Operation of Motor Driver

• L293D has 2 set of arrangements where one set
  has input 1, input 2, output 1 and output 2
  and other set has input 3, input 4, output 3 and
  output 4, according to block diagram if pin no 2
  7 are high then pin no 3 6 are also high.
• If enable 1 and pin number 2 are high leaving
  pin number 7 as low then the motor rotates in
  forward direction.

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Fire Fighting Robot Remotely Operated by Android
Applications
Operation of Motor Driver

• 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.

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Fire Fighting Robot Remotely Operated by Android
Applications
Designing the Robot
The robotic vehicle consists of the following
units

• A rectangular base to support the whole robot
  structure, attached to two wheels for
  motion.
• A couple of DC motors to provide required
  movement to the robot.
• A control unit consisting of an RF receiver which
  receives command signals from a
  transmitter unit to control the engine driver and
  control the motors accordingly.
• A metal detector circuit along with a buzzer
  alarm which triggered once the metal
  detected.

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Fire Fighting Robot Remotely Operated by Android
Applications
Designing the Robot

• Types of Fire Fighting Robotic Vehicles
• Home Fire Fighting Robotic Vehicle
• Industrial Fire Fighting
• Forest Fire Fighting

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Fire Fighting Robot Remotely Operated by Android
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Designing the Robot

• Home Fire Fighting Robotic Vehicle
• The field action constrained on the current Flore
  of house.
• This robot is using many house hold items catch
  fire when someone is asleep or away.

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Fire Fighting Robot Remotely Operated by Android
Applications
Designing the Robot

• Industrial Fire Fighting
• Most of the industries are faced fire accidents
  problems like gas, petrol, nuclear power plants,
  chemical industries huge amount of damage.
• And more number of peoples is dead near
  surrounding areas.
• This robot has the strength to carry a fire
  around inside burning area to supply unlimited
  water.

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Fire Fighting Robot Remotely Operated by Android
Applications
Designing the Robot

• Forest Fire Fighting
• Forest Fires is very dangers.
• It can be a short time burning large amount of
  forest area.
• Even city fire departments have to deals with
  forest fires in the area surrounding city.

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Fire Fighting Robot Remotely Operated by Android
Applications
Working Principle

• The project uses HT12E Encoder which converts 4
  bit data to serial output which is then fed to
  the RF module.
• For transmitting the same to be received by the
  receiver RF module the output of which is fed to
  HT12D the serial decoder I.
• The output of which is fed to controller.
• The transmitting end MC is connected to a set of
  pushbutton.

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Fire Fighting Robot Remotely Operated by Android
Applications
Working Principle

• Thus while a particular button is pressed the
  program executed delivers corresponding 4-bit
  data which are then transmitted serially at port
  1.
• The data so received at the receiver end of port
  1 operates the motor through motor driver IC
  L293D as required being interfaced from the
  Microcontroller output port 2.
• The transmitter is powered by a 6v battery in
  series with a silicon diode to finally develop
  required voltage for microcontroller circuit.

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Fire Fighting Robot Remotely Operated by Android
Applications
Working Principle

• The receiver is powered by a 12v battery in
  series with a silicon diode to protect the
  circuits from accidental reverse battery
  connection.
• 5V DC out of the 12V available from regulator IC
  7805 is fed to the controller, decoder, the motor
  driver IC L293D pin 8 for operation of the motor.
• The receiving unit uses one more motor driver IC
  L293D for driving one DC Motor for arm operation
  with a boom mounted on its shaft.

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Fire Fighting Robot Remotely Operated by Android
Applications
Working Principle

• At the end of the shaft a nozzle is connected to
  a water tanks mounted water pump which is powered
  from NO contacts of a relay that is driven by
  transistor Q1 from the output of MC pin 15.
• Thus in the event of a fire the robotic vehicle
  is moved over to the location by operating the
  left, right, forward backward button etc.
• After it reaches the site the nozzle mounted
  motor takes position through the water on the
  fire from the water tank mounted DC pump actuated
  by the relay RL1.
• Thus the fire can be extinguished.

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Fire Fighting Robot Remotely Operated by Android
Applications
Advantages

• Capability of sensing accurately with increased
  flexibility
• No line of sight Not blocked by common materials.
• It can pass through solids Longer range
• Not sensitive to light
• Not sensitive to weather conditions

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Fire Fighting Robot Remotely Operated by Android
Applications
Disadvantages

• Communication devices mostly use similar
  frequency, so interference occurs if the address
  are not specified.
• High cost.
• Data rate transmission is lower than wired
  transmission.
• It cannot be work beyond the limit

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Fire Fighting Robot Remotely Operated by Android
Applications
Applications

• Industries are using RF solutions
• For monitoring, control, process, inventory
  tracking, data links and bar code reading
  devices.
• Consumer products
• Electronic toys, home security, gate and garage
  door openers, intercom, fire and safety systems,
  and irrigation controllers.
• Medical products
• Patient call and monitoring, handicap assistance
  device, surgery communication system, remote
  patient data logging and ECG monitor.

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Fire Fighting Robot Remotely Operated by Android
Applications
Conclusion

• Fire Fighting Robot Remotely Operated by Android
  Applications was designed and implemented For
  fire monitoring, control, process, inventory
  tracking, data links and bar code reading
  devices. the project can be enhanced by
  interfacing it with a wireless camera so that the
  person controlling it can view operation of the
  robot remotely on a screen.

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