An Efficient Smart Cane Based Navigation System for Visually Impaired People

摘要

This paper proposes a smart system for the blind people that would allow them to avoid obstacles or holes in their path. The system calculates the distance between the device and the terrain in a continuum and determines if the path ahead is flat or has obstacle. The user is informed through vibration as s/he holds the cane in hand. A laser light to throw a beam downward at a fixed angle, a camera also fixed to pick up the laser spot on the ground and a personal computer for computation were used in the prototype. We also provided a tentative design for the can that stays vertical along its way.