Over speeding is the primary cause of road accidents. Accelerated speed increases the risk of accident and severity of injuries. The primary goal of designing this Doppler radar-based vehicle speed detection system is to lessen the casualties due to road accidents and to ensure the security of all parties involved. The designed system encompasses the design of an array of patch antennas and radio frequency circuitry which operates at 5.8 GHz.
In the designed radar, speed is detected by measuring the frequency difference between the transmitted and received signals due to Doppler shift. The system level design, simulations, and the layout design of the radar hardware were done using AWR Microwave Office Design Environment. The design and simulation of the patch antennas was done using Ansys HFSS. In the design, a signal is generated by a VCO and it is split into two branches using a coupler to feed a mixer and the transmitting antenna. The signal is amplified using a RF power amplifier and it is band pass filtered to remove unwanted harmonics prior to feed the transmitting antenna. The received signal is then mixed with a sample of the transmitted signal and the IF output is low pass filtered. A/D conversion, speed calculation, and data handling are done by a micro controller. The micro controller is connected to an IoT platform through the internet for data visualization. The authorized people are allowed to access the server for viewing the data. We believe that this system can be successfully applied on roads or highways to detect vehicles that violate speed limits.
𝗦𝘂𝗽𝗲𝗿𝘃𝗶𝘀𝗼𝗿𝘀
Prof. D.N. Uduwawala,
Prof. Aruna Gunawardhana
𝗧𝗲𝗮𝗺 𝗠𝗲𝗺𝗯𝗲𝗿𝘀
Name : Praveen Dassanayake
E mail : praveendassanayake123@gmail.com
LinkedIn : [ Ссылка ]
Name : Miraj Tharaka Dasanatake
E mail : tharakamiraj@gmail.com
LinkedIn : [ Ссылка ]
Name : Thashmila Araliya De Silva
E mail : thashmilaaraliya@gmail.com
LinkedIn : [ Ссылка ]
