The In vehicle blind spot detection system (IVBSDS) helps driver to monitor the blind spots of the vehicle while driving in the high-speed lane. The ATmega169-based system use of the high intensity Infrared ray (TSOP 1738) to detect presence of any approaching vehicle. To avoid any false detection, infrared diodes transmit 36 KHz pulse. Thus the system will not detect any external light source and any other heat source.
During detection process, two high intensity pulsed infrared beams are projected at the both left and right sides of the vehicle. The high intensity pulsed beams get reflected back to the vehicle when there is any vehicle approach. The receiver sensor (TSOP 1738 infrared sensor) output will be high if no vehicle approach and become low in the presence of reflected Infrared beam. The system will generate alert if there is change in the output of any TSOP sensor. User can choose display the alert on LCD or use voice alert through speaker.
“This simple and cheap car safety system can be implemented in any vehicle of any size. It is very compact, no complex electrical wiring and low power consumption,” said Amit Kumar, the project designer.