Electronic Guidance Cane for Users Having Partial Vision Loss Disability

Figure 9

Result status diagrams of further enhanced work with an outdoor prototype of the electric guidance cane of visually impaired human. (a) During an outdoor real-time simulation, working on location, GPS and GSM modules were employed to check the longitude and latitude. (b) Display hurdle in front of the first sonar obstacle avoidance sonar sensor: turn right. (c) Motion in front of the second sonar obstacle avoidance sonar sensor: turn left. Water, road depth, and flame are detected in front of the stick, so a vibrator vibrates and the speaker generates a relevant direction command.

(a)

(b)

(c)