OVERVIEW
The objective of this project was to develop a functional prototype speed detector utilizing HB100 Doppler Radar technology. By leveraging the Doppler effect, this radar device measures the velocity of moving objects by analyzing the frequency shift between emitted and reflected signals. A display board for this system was also designed. This prototype was designed with the aim to accurately calculate the speed of objects based on the measured frequency variations, and was a collaboration between two other students and myself.
PROJECT OBJECTIVES
Based on the overiview above, the prject was divided into several objectives as follows:
- Design, simulate, and build two analogue signal conditioning circuits (bandpass filter + amplifier) for both the ADC system and comparator system
- Implement data acquisition and signal processing using the STM32 microcontroller along with an LCD/button user interface to view the frequency/speed and switch between different calculated units
- Implement a complete working prototype for both systems with the final circuit soldered onto a printed circuit board (PCB)
- Build RS-485 serial transceiver daughter board to transmit and receive a UART signal containing the speed of the moving object (encoded in binary coded decimal)
- Design and build the required power supplies for the display board using the MAX-882 integrated circuit
- CPLD Sofware design and implementation of clock divder, BCD to 7segment decoder, shift register, UART control receiver logic
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