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Autonomous Fire Extinguishing Robot Design for Residential Environments

The project team, consisting of Josh Lothian and Adam Stanton, has designed an innovative robot capable of autonomously locating and extinguishing fires in residential areas upon alert from a fire alarm. Utilizing an omnidirectional electret microphone for sensing alarms, a low-power tone decoder, and ultrasonic distance sensors, the robot follows walls, navigates obstacles, and reacts to varying fire conditions. Equipped with a UV sensor, rechargeable power supply, and steering via tank treads, this robot represents a significant advancement in fire safety technology.

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Autonomous Fire Extinguishing Robot Design for Residential Environments

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Presentation Transcript

  1. Team ί Burning Equalizer • Josh Lothian • Adam Stanton

  2. The purpose of this project is to design a robot that can autonomously locate and extinguish a randomly placed fire in a residential environment when alerted by a fire alarm. Problem Statement

  3. Omnidirectional Electret Microphone (to sense alarm) • Low Power Tone Decoder (LMC567) • PING)))™ Ultrasonic Distance Sensor • Wall Follower, preferentially turning right • Skid steering using tank treads • Tamiya Twin Motor Gearbox • UV sensor (to detect fire) • UVTRON R9495 • UVTRON C10423 • Computer fan on servo (to extinguish fire) • Rechargeable power supply • Bumper Switches • 3x Line Sensors • 2x HCS08 Microcontrollers Our Solution

  4. System Diagram Top view Ultrasonic Sensors UV Sensor w/ shield Line Sensor Fan DC motor gearbox UV Sensor Shield

  5. Activation State Diagram Pull in

  6. Modified Microphone, Filter and LMC567 Electrical Diagram

  7. Navigation State Diagram

  8. Arena Navigation 1 Return Path 4 Search Alcove From Entry – Rotate 180° 6 2 5 3 Move Forward 8 7 Rotate 90° CW Rotate 90° CCW

  9. Extinguishing Fire State Diagram

  10. Obstacle Avoidance - Determining Distance from PING Sensor

  11. UVTRON Output Waveform The closer the sensor is to the source of the flame, the shorter time interval between pulses.

  12. Component Supply Voltages and Currents Battery Pack charge amount = 1600mAH

  13. Parts List

  14. Questions?

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