Radar on Race
Date:
Overview
Presented our innovative Doppler radar velocity measurement system at CWRU’s SOURCE (Support of Undergraduate Research and Creative Endeavors) STEM conference, demonstrating how undergraduate engineering research can address real-world community needs through cost-effective technological solutions.
Abstract
The Cleveland Big Wheels Relay, an annual fundraiser for the Cleveland Hearing and Speech Center, lacked affordable real-time velocity measurement capabilities to enhance spectator engagement. Commercial radar guns ($80-$200) are prohibitively expensive and lack audience display features. Our team developed a custom Doppler radar system using the HB100 microwave sensor (10.525 GHz) integrated with an ESP32 microcontroller, achieving comparable functionality at just $30.25 in components. The system features custom signal amplification circuitry, real-time Bluetooth data transmission, and dual-lane monitoring capabilities specifically designed for relay racing formats.
Key Technical Highlights Presented
Signal Processing Innovation: Designed a two-stage operational amplifier circuit providing 40dB gain to amplify microvolt-level Doppler signals
Wireless Integration: Implemented Bluetooth Serial communication achieving 3.55-second connection time with 60-foot range Cost Optimization: Reduced implementation cost by 85% compared to commercial solutions through efficient component selection and system consolidation Real-Time Performance: Achieved sub-millisecond processing latency for velocity calculations using optimized DSP algorithms
Research Impact
This project demonstrates the successful application of electromagnetic theory, signal processing, and embedded systems design to create accessible technology for community organizations. While encountering challenges with noise interference,the project provided valuable insights into real-world signal processing constraints and the importance of robust filtering techniques in electromagnetic applications.
Presentation Components
Live demonstration of radar velocity detection Poster featuring system architecture and performance metrics Interactive Q&A on Doppler effect applications Discussion of future improvements including enhanced noise suppression techniques
Recognition
Selected for presentation at SOURCE’s competitive STEM showcase, representing the Department of Electrical, Computer and Systems Engineering’s commitment to community-engaged research and practical engineering solutions.
This presentation at SOURCE highlighted how undergraduate research can bridge the gap between theoretical engineering education and practical community applications, showcasing CWRU’s emphasis on experiential learning and social impact through technology.