EcoCar User Interface Final Presentation Senior Design I April 19, 2012

Design Team Sam Knight Computer Engineer DBus Programming CAN Bus Programming Lukas Cox Electrical Engineer Dictionary Training Physical Interfacing Adam Johns Computer Engineer Alternatives Researching Recognition Programming Renz Santos Computer Engineer Recognition Programming Website Design Dr. Marshall Molen Advisor

Contents Problem and Solution System Overview Model Technical and Practical Constraints Evaluation – Voice Recognition Tests – Communication Tests Senior Design II Goals References

Problem and Solution

Problem The increasing technology in vehicles today unfortunately increases the amount of danger to drivers and passengers alike. “Driver distraction is a leading cause of crashes, although the exact figures are difficult to gauge because of the unreliability of the data” [1].

Solution EcoCar User Interface – Allows car’s infotainment center to be controlled by voice – Helps lower the amount of attention needed to run modules on car – Displays critical information relating to the vehicle

System Overview Microphone CAN Bus Computer Voice Recognition Control Overview, Radio, Media, GPS, Diagnostic Modules Projector

Model

Technical and Practical Constraints

Technical Constraints NameDescription AccuracyThe system must correctly identify spoken commands with 90% accuracy. Latency The EUI must acknowledge commands within 250ms. Compatibility The system must run on Freescale SABRE platform computer. Communication The EUI must communicate with CAN bus. Vocabulary The system must recognize 12 voice commands

Practical Constraints TypeNameDescription ManufacturabilitySize The EUI must fit below the passenger seat and not obstruct the driver. SustainabilityDurabilityThe system must be able to withstand the vibrations of normal driving conditions.

Manufacturability Fit below passenger seat Microphone < 4”x2”x2” Projector < 1” depth [2]

Sustainability No short term problems Works as long as hardware does not fail Withstand normal car vibrations

Evaluation

Voice Recognition Test: Accuracy “EcoCar” is the keyword that must be used in conjunction with each command Recognizes 14 spoken commands 50 commands consecutively For this test the EUI’s accuracy was 78%

Voice Recognition Test: Latency

Voice Recognition Test: Compatibility The EcoCar’s Freescale Sabre computer board has 1 GB of RAM EUI only uses a maximum of 180 MB [3]

Voice Recognition Test: Compatibility

Communication Test: DBus method call sender=: > dest=org.EcoCar.Module.MasterModule serial=3 path=/org/EcoCar/Module/MasterModule; interface=org.EcoCar.DBus.Interfaces.EICMaster; member=ShowModule string "player" method call sender=: > dest=org.EcoCar.Modules.Info serial=12 path=/org/EcoCar/Modules/Info; interface=org.EcoCar.DBus.Interfaces.EICClient; member=hide method call sender=: > dest=org.EcoCar.Modules.Radio serial=13 path=/org/EcoCar/Modules/Radio; interface=org.EcoCar.DBus.Interfaces.EICClient; member=hide method call sender=: > dest=org.EcoCar.Modules.MediaLibrary serial=14 path=/org/EcoCar/Modules/MediaLibrary; interface=org.EcoCar.DBus.Interfaces.EICClient; member=hide method call sender=: > dest=org.EcoCar.Modules.Navigation serial=15 path=/org/EcoCar/Modules/Navigation; interface=org.EcoCar.DBus.Interfaces.EICClient; member=hide method call sender=: > dest=org.EcoCar.Modules.Diagnostics serial=16 path=/org/EcoCar/Modules/Diagnostics; interface=org.EcoCar.DBus.Interfaces.EICClient; member=hide method return sender=: > dest=:1.199 reply_serial=3 method call sender=: > dest=org.EcoCar.Modules.MediaPlayer serial=18 path=/org/EcoCar/Modules/MediaPlayer; interface=org.EcoCar.DBus.Interfaces.EICClient; member=show method return sender=: > dest=:1.186 reply_serial=15 method return sender=: > dest=:1.186 reply_serial=12 method return sender=: > dest=:1.186 reply_serial=13 method return sender=: > dest=:1.186 reply_serial=16 method return sender=: > dest=:1.186 reply_serial=14

Communication Test: CAN Bus EUI communicates with the car through the CAN Bus Battery temperature, battery life, battery depletion rate, instantaneous MPG, average MPG, engine-on distance, electric distance, and engine-on count

EUI Demo Video

Senior Design II Goals

Improving Accuracy CAN Messages New EcoCar Projector Mounting

Senior Design I Timeline JanuaryFebruaryMarchApril Researching Programming Ordering Parts Prototyping Debugging/ Fine Tuning

Senior Design II Timeline AugustSeptemberOctoberNovember Software Refinement Projector Mounting Software Integration Testing

References [1] (2012, February 22). “Music Related Car Crashes,” in Car Accidents [Online]. Available: car-accidents-causes.htmlhttp:// car-accidents-causes.html [2] Picture (2012, February 21). “Pico Projector,” in MicroVision [Online]. Available: [3] Picture (2012, April 17). “Freescale Sabre,” in LinuxDevices [Online]. Available:

EcoCar User Interface Final Presentation Senior Design I April 19, 2012