Project Overview:
This project explores the design, modeling, and simulation of a digital electronic control system for a Pelican Crossing, using the SIMetrix simulation platform. The system replicates real-world traffic light sequencing while ensuring accessibility for both pedestrians and visually impaired users.
Project Objectives:
• Simulate traffic light behavior for vehicles and pedestrian signals
• Integrate audio-visual cues to enhance crosswalk accessibility
• Apply principles of combinational and sequential logic to digital system design
• Demonstrate practical use of simulation tools for verifying circuit performance
Core Circuit Components:
• Clock Oscillator: Generates periodic pulses that trigger system activity
• Binary Counter: Tracks timed stages in the traffic light sequence
• Decoder Logic: Converts counter output to control signals
• Logic Gates: Ensure proper signal flow and safety sequencing
• LEDs: Represent red, amber, and green lights for vehicles and pedestrians
• Auditory Signal Circuitry: Simulates beeping sounds for visually impaired users
Simulation Highlights:
• Timed sequencing of vehicle and pedestrian lights using clock-driven logic
• Use of SIMetrix waveforms to validate timing, outputs, and transitions
• Integration of delay logic and synchronization between visual and audible outputs
• Analysis of edge cases and failure modes under simulated conditions
Practical Insights:
The project bridges foundational theory and practical implementation:
• Sequential Logic: Counter and decoder coordination reflects real-time transitions
• Combinational Logic: Gate arrangements ensure safe and conflict-free signal states
• Accessibility Engineering: Audio signals simulate real-world inclusive design standards
• Simulation-Driven Validation: Highlights how digital tools support circuit refinement
This project exemplifies how digital electronics can drive smart, inclusive, and reliable public infrastructure—through simulation-driven innovation.