The paper deals with the development of methods and a device for the blind to walk by orientating himself through remotely contacting study of what has happened and is happening on the road. An optoelectron method for detection of vertical obstacles and ground gaps has been proposed. The authors have drawn up the structural and functional diagrams of a device which is combined with a walking-stick and which makes it possible to detect 3 types of pedestrian obstacles with appropriate sound signalling.
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