ECE 477 Digital Systems Senior Design Project Fall 2010

Digijock(ette)-Strength Digital System DesignTM

Car Side Car Seat Side

Project Overview•Project Forget-Me-Not is a child seat monitor for use in vehicles.

•Detects the presence of a child in a child safety seat and will sound an alarm, roll down the windows, and unlock the car if a child is left in a car.

• Interfaces directly with the government-mandated OBD-II port to detect vehicle state.

•OBD-II port is available in all vehicles manufactured since 1996.

Project Specific Success Criteria• An ability to determine the operating state of the vehicle via the OBD-II port. 

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

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

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

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

Initialize Wait for interrupts

Ignition off

Check child flag

If present, start timer

Timer expired

Sound Alarm

CAN operations (windows, locks, etc)

Door open

Check child & ignition flags

Sound chime

Child put in/taken out of

seatIgnition on

System Control Flow

Team 4: Project Forget-Me-Not