1. Bicycle Black Box (BBB) Christopher Kidd Anne Marie Carpenter Advisor: Dr. Wiley Preliminary Design Review (PDR) November 30, 2013 EEL 4906 Professional Issues and Engineering Design I

2. Introduction Project Objective: To provide bicycle users with a recording of proof in the event of a collision, theft, or other illegal event Benefits include hit-and-run identification and user sense of security with activated captures.

3. Design Approach Components: Accelerometer digital, 3D, +-6G, +50Hz BW Microprocessor Raspberry Pi B rev. 2 Camera 25 x 24mm, 1080p, 5Mp Storage Device SD Card to Pi AG

4. Design Approach Simulation and Design Tools Labview and PSpice Example pseudo code //Power switch initializes board #define //set necessary definitions main() { //set camera video quality and data specifications //code video buffer saves and dumps 2 minutes of data frame by frame //assign accelerometer values to desired bit rates, sampling frequency, g range, etc if (Accel_I2C_pin >= (trigger value)) { //copy current saved segment to ssd //save following segment to ssd after waiting 2 minutes } else if (manual_pin_get(1)) { //repeat accel statements }}

5. Action items Purchase Equipment Simulating a bike being hit Testing the sensors for sensitivity, deciding on “hit” values” LabVIEW simulation Program Raspberry Pi Prototype test on bicycle

6. Timeline: Milestones 1. Sensitivity Testing compared to bike hit simulation 2. Successfully program raspberry pi to recognize all inputs 3. Successfully saving recording footage after any sensor triggers raspberry pi

7. Summary Outside San Francisco: Transportation Injury Mapping System reported 83 Hit and Run Accidents in 2011