Scientists at Novosibirsk State Technical University (NSTU) have created a unique device for orientation of the blind in space — the Barrier Track electronic assistant. It is able to recognize obstacles even in difficult weather conditions. Moreover, it is equally convenient for left-handed and right-handed people and does not require frequent recharging. The project is supported by the Russian Science Foundation.
The new version of the device has become a significant step forward compared to the previous one, created two years ago as part of the Priority 2030 program. Previously, the system "saw" obstacles at a distance of up to four meters, but now the range has been doubled. A key part of the development is the creation of a model for synthesizing elements of the urban environment — curbs, stairs, and irregularities. Its task is to repeatedly recreate complex situations in order to train algorithms and improve navigation accuracy.
The redesign of the sensor system became an important improvement. Four sensors provide spatial orientation: two look down, one looks up, and one looks forward. Thanks to the parallel arrangement of the two lower sensors and the use of the difference method, the device has learned to confidently identify curbs with a height of more than 10 cm, which is critically important for safe movement on sidewalks.
The shape of the handle has been changed to accommodate a more powerful battery. "We have increased the battery capacity by more than five times — from 600-800 to 5000 mAh. The device can now be charged via Type-C approximately once a week. At a charge level of 30%, the assistant reminds you to recharge with vibration and sound," explained the author of the development, associate professor of the Department of Radio Receivers and Radio Transmission Devices, Candidate of Technical Sciences Andrey Nikulin.
For accurate operation of the built-in gyroscope and accelerometer, the device has a special damping unit that isolates vibrations and prevents them from affecting the operation of the position sensors.
An important advantage of the new version was its resistance to the winter sun, which the previous sensors could not cope with. "The new sensors work well with reflected light and efficiently detect obstacles. This is confirmed by both tests and reviews of visually impaired people about the device," said Andrey Nikulin.
The serial production of the Barrier Track is planned to be organized on the basis of NSTU-NETI with the participation of university students.
Let us remind you that the electronic assistant is not the only development of NSTU-NETI aimed at improving the lives of the visually impaired. Previously, an interfaculty development team led by Andrey Nikulin created an effective and easy-to-use video navigator for blind people based on artificial intelligence. The podcast "Listen to Siberia" was also developed with adapted tours of Siberian cities, which allows you to explore the city space on your own, feel confident in a new environment and actively participate in cultural life.