Traffic Light Synchronization

by: Avneesh Kohli, Eric Harmatz, and Govil Gupta

Cluster 1: Adventures in Embedded Computer

SystemsInstructors: Dr. Rajesh Gupta, Dr. Choon Kim, Shirley Miranda, Arash Arafee, Bridget Benson

The Problem

• Over 6 million accidents per year

• Nearly 50,000 deaths per year

• 60% of accidents by human error

• $230 billion spent annually

Purpose

• In need of a better safety traffic system

• Traffic lights controlled by timers rather than present cars

• Synchronization of lights can save time and lives

Background Information

• C Programming Language

• PSoC Devices

• CapSense / Touch-Based Input

• Hardware / Wiring

• Multi-chip Communication

Hypothesis• Use CapSense to represent car

• Light turns green when car approaches intersection

• Perpendicular lights change automatically

• Two sets of lights are synchronized

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Materials• 2 Cypress PSoC CY3214 Chips

• 3 LED’s (Red, Yellow, Green)

• CapSense module

• PSoC Designer 5.0

• PSoC Programmer

• USB Mini-Programmer

• Wires

Procedure

1.Open PSoC Designer

2.Select Chip Level Project

3.Add CSD User Module

4.Configure CSD

5.Add 3 LED User Modules

6.Configure LED’s

7.Open main.c

8.Program main.c

9.Build project using Imagecraft compiler

10.Transfer program to chip

11.Connect wires to breadboard and ports

Sample Pictures

Video Demonstration

Results and Data

• Successful, working device

• Realistic light cycle delays

• Very responsive to all finger motions

Conclusions

• Successful culmination of our knowledge of C and hardware

• Can be improved with a more efficient code

• Can be expanded to use 2 CapSense modules

Applications/Future

• Incorporate into suburban streets to reduce intersection accidents

• Applicable to any areas with controlled traffic

• Less traffic, save people, save time