The Concept of a System for Identification of the Dangerous Areas for People with Visual Dysfunction

The marking of the dangerous areas for people with visual dysfunction is extremely important for the safe and free commutations. Currently used methods for marking — sound signalling, shaped pavement etc. are sucient in the stationary objects such as pedestrian crossing, staircases or rail platforms. The problem is in marking of the object that appears in certain place for a short time, for example a road work or an excavation. Also with the technological development it is possible to improve quality of life for the visually impaired people. An attempt was made to develop a system that, on one hand, would fully inform a person with a visual dysfunction about nearby danger, and, on the other hand, would not be burdensome and would not absorb too much of the user’s attention. The choice was made to utilise systems for wireless data transmission as well as vibration signals to transmit information. Main guidelines are: