Accurate measurement of vehicle and object speed is essential for road safety, traffic monitoring, and research applications. Traditional speed detection systems are often bulky, expensive, and infrastructure-heavy, making them unsuitable for portable use or low-cost deployments. Modern requirements demand compact, wireless, and affordable speed detection solutions that can be easily deployed in both fixed and mobile scenarios.
This project introduces a portable Doppler radar–based speed detection system built using IndusBoard Coin and an HB100 millimetre-wave Doppler radar sensor. The system calculates speed by analysing the frequency shift in reflected radar signals caused by moving objects. Processed speed data is displayed in real time on a wireless web dashboard, which can be accessed directly from a smartphone or computer without requiring an internet connection.
Key Features
- Compact and portable Doppler radar speed detection system
- Non-contact speed measurement using millimetre-wave radar
- Wireless real-time speed display via local web dashboard
- Signal amplification using an LM358-based amplifier
- Interrupt-driven pulse counting for accurate speed calculation
- Displays speed in m/s and km/h
- Radar-style graphical web interface
- Adjustable speed threshold with visual over-speed alerts
- Can operate in standalone Wi-Fi access point or network mode
- Suitable for indoor and outdoor deployments with enclosure support
Applications
- Vehicle speed monitoring on roads and highways
- Traffic analysis and smart city installations
- Portable speed measurement for field testing
- Railway and industrial speed monitoring
- Educational demonstrations of Doppler radar principles
- Research and experimental motion analysis
This Doppler radar speed detector showcases how accurate, real-time speed measurement can be achieved using a compact and cost-effective design. By combining radar sensing with the wireless capabilities of IndusBoard Coin, the system enables flexible deployment across multiple use cases—from roadside monitoring to portable diagnostics—making it a practical solution for modern speed detection needs.