Revolutionary device will show the way forward for the blind

New device for visually impaired.
The device will warn users about kerbs and dips in surface.

Daily life for blind and vision-impaired people will be dramatically improved following the development by University of Melbourne researchers of a prototype of an electronic device to help them avoid non-protruding obstacles.

The prototype, which can be attached to a cane, walking frame or wheelchair, uses lasers and a camera to identify non-protruding and potentially hazardous obstacles such as kerbs, potholes, descending stairs and dips in the pavement.

Department of Electrical and Electronic Engineering researchers Elaine Wong, Marimuthu Palaniswami and Aravinda Sridhara Rao are combining their various skills in intelligent sensors, scanning technology and photonics to develop what they aim to be a hands-free laser optical device.

“When fully developed, the device will be a safeguard against falls, which are of major concern, particularly among the elderly,” said Associate Professor Wong.

The idea arose after Associate Professor Wong’s now nine-year-old was born with congenital blindness.

She contacted Vision Australia and offered her skills as an engineer in the hope she could help improve the independence and safety of the vision-impaired.

“I wanted to do something tangible, that could have a real impact. Maintaining people’s quality of life cannot be underestimated,” she said.

The team’s next step is to miniaturise the prototype and refine the lasers so they work under all lighting conditions.

They also aim to make the final device as cheap, portable and user-friendly as possible for the 360 000 vision-impaired people in Australia and the 285 million worldwide.

“While the real-time navigation and safety gains are obvious, there are also clear social benefits in helping vision-impaired people continue their social interaction, ensure they stay healthy as they get older, and develop confidence and skills in getting around,” Associate Professor Wong said.

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