Analysis performances of Laser Range Finder and blue LED for Autonomous Underwater Vehicle (AUV)

This paper described a new technique for obstacle avoidance or depth control using a laser range finder and blue LED and then applied to Autonomous Underwater Vehicle (AUV). AUV is equipped with a variety of sensors and components depending upon the missions and applications. One of the main issues in developing the AUV is complex systems and also the cost. AUV must be able to interpret its environment by gathering information from its sensors with higher accuracy. This is due to unpredicted condition in an underwater where a serious collision might occur if this kind of sensory system is not effected. The objective of this project is to develop a new sensory system to depth control using the Laser Range Finder (LRF). LRF as a tool to measure and detect obstacles at a certain range. Then, the performance of LRF is investigated in terms of ranges, accuracy and material detected. The components used are Arduino Nano as microcontrollers, 5 mm blue LED (receiver) and LRF (transmitter) that will able to focusing on depth control. The result obtained that the LRF will be able to detect obstacles up to 80 cm to maintain at certain depth and good in accuracy.