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Enhance Road Safety with BBackSafe: A Breathalyzer-Integrated Car Key Solution

BBackSafe aims to reduce the staggering number of drunk driving incidents by providing a smart car key integrated with a breathalyzer and warning system. Before driving, users must pass a breathalyzer test; if they fail, the car won't start, and emergency contacts receive an alert via smartphone. Unlike existing solutions, BBackSafe is affordable, portable, and user-friendly, making it a viable tool in the fight against DUIs. Our goal is to empower drivers with a reliable system that prioritizes safety for themselves and others on the road.

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Enhance Road Safety with BBackSafe: A Breathalyzer-Integrated Car Key Solution

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  1. BBackSafe Team 13 Charlie (Zhaotao) Xu May Zhai Andrew Chung Frank Zhou

  2. Concept/Motivation • Motivation • Before: drunk driving is the source of many traffic accidents • 112 million DUIs in the US in 2010 • BBackSafe aims to protect the drivers from themselves • Concept • Integrate a breathalyzer and warning system with a car key • Prompts user to pass breathalyzer test before driving • If test fails, car will not start and key will send message to emergency contact via user ' s smartphone • After: number of drunk driving incidents reduced by affordable, versatile device

  3. Competitive Analysis • Saab's Alcokey • Expensive, $408 projected • No emergency contact • Compatibility issues • Breathalyzer Key Chains • Cheap, $7 • Does not effectively restricts user from driving • No emergency contact • Smart Start Ignition Interlock • $85 Installation fee and $75/month for subscription • Tedious registration process • Target audience is for people convicted of DUIs

  4. Product Matrix

  5. Requirements • Functional • Alcohol sensor accepts breath sample as input • Sensor obtains digital reading of BAC • If the BAC is greater than 0.08% • Disable starting the car (via Bluetooth) • Send SMS message containing driver’s location to emergency contacts (via Bluetooth) • Otherwise, allow driver to start the car • Non Functional • Reliability: disable car start once test has failed • Portability: size no bigger than a normal car keychain • Timing: provide a response in no more than 5 seconds • Performance: driver can try multiple times until he passes the test

  6. Architecture

  7. Technical specifications • MQ-3 sensor • Thermometer • Arduino mini • Bluetooth Mate • Engine Starter Igniter • Android client

  8. Risk/Mitigation Strategy • Someone else breathes into key instead • Short battery life • Bluetooth failure • Sensor inaccuracy • Unsupported user behavior • Make system low-power consumption or charge it on car • Test multiple times to make sure it works • Test and tune multiple times

  9. Questions?

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