ECE 477 Final Presentation Team 4 Fall 2010

Chris Cadwallader

Andrew Sydelko

Mike Williams

Craig Pilcher

Outline

• Project overview• Block diagram• Design challenges• Individual contributions• Project demonstration• Questions / discussion

Project Overview• A child safety-system that prevents parents and

caretakers from accidentally leaving children in vehicles.

• Average number of U.S. child hyperthermia fatalities per year since 1998: 37– 49 so far in 2010 alone (8 since start of project)– Goal is to prevent as many deaths as possible

• System tracks presence of children in safety seats and can control the car’s systems to save the child’s life

Statistics

Source: http://ggweather.com/heat/“Hyperthermia Deaths of Children in Vehicles”

Car Side Block Diagram

Child Side Block Diagram

Design Challenges• Detection of vehicle state varies widely

across car models from 1996 to 2010.– SWCAN, J1850, ISO9141, etc. supported

• Required simultaneous CAN control, audio playback, vehicle state detection, and wireless monitoring

• Control of vehicle depends on imitation of internal components and keyfob

• Non-linear memory layout

Individual Contributions• Team Leader – Mike Williams• Team Member 2 – Chris Cadwallader• Team Member 3 – Craig Pilcher• Team Member 4 – Andrew Sydelko

Team Leader – Mike Williams• Board and Software Design• Initial Component Selection and Schematic• Soldering (poorly)

Team Leader – Mike Williams

Member 2 - Chris Cadawallader• Software Design

– Drivers– CAN communication– Child side detection– State Machine

• Verification

Member 3 - Craig Pilcher• Software Design

– Organization– Development– Debugging– Audio, CAN fxns

• Component Selection

Member 4 - Andrew Sydelko• Software/hardware troubleshooting

– PWM audio, FLASH access from CodeWarrior• Packaging design and implementation

• Software design

Project Demonstration

1. An ability to determine the operating state of the vehicle via the OBD-II port. 

2. An ability to determine the presence of a child in a safety seat. 

3. An ability to use multiple safety seats in one vehicle. 

4. An ability to sound an audible alarm when the ignition is turned off. 

5. An ability to interface directly to the internal vehicle CAN.

Movie

Questions / Discussion