please send ultrasonic based path planning for blind person pdf to okalpana25[at]gmail.com
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About 1% of the human population has visual impairments, and 10% of them are totally blind. One of the consequences of visual impairment is the limitations of mobility. For global navigation, there are already many tools. For example, in outdoor situations, GPS handheld systems for the blind are now available. These tools are not useful for local navigation: planning of local routes and prevention of collisions. Traditional tools, ie the guide dog and cane, are appreciated tools, but these tools do not adequately solve local navigation problems. Guide dogs are not employable on a large scale (training capacity in the Netherlands is about 100 guide dogs each year, enough to help about 1000 users). The cane is too restrictive.
The objective of this research is to develop a portable tool to help the blind to perform their local navigation tasks. The primary data required for local navigation are range data (which is not necessarily obtained from visual data, at this time, the type of sensors is still an open question). The mapper converts range data into map data. The local map is the input of a warning system that transforms the map data into a form that is suitable for communication. To give the blind person freedom of movement, he must be able to control the focus of attention of the sensory system. For this, the tool must be provided with a human-machine interface.
The ultimate goal of this project is to provide an electronic tool for the local navigation task of the blind. The tool should provide information on the direct environment of the blind to allow it to move without collisions. We assume that, although mostly unknown, the environment has some structure, such as in an outdoor urban situation (for example, a street), or in an interior situation: smooth floors, occasionally a door, stairs, Walls, door openings and all Type of objects that possibly obstruct the passage.
Related video is here :