The GuideCane-applying mobile robot technologies to assist the visually impaired
Iwan Ulrich, J. Borenstein · IEEE Transactions on Systems Man and Cybernetics - Part A Systems and Humans · 2001
The GuideCane is a device designed to help blind or visually impaired users navigate safely and quickly among obstacles and other hazards. During operation, the user pushes the lightweight GuideCane forward. When the GuideCane's ultrasonic sensors detect an obstacle, the embedded computer determines a suitable direction of motion that steers the GuideCane and the user around it. The steering action results in a very noticeable force felt in the handle, which easily guides the user without any conscious effort on his/her part.