Students from China’s Nanjing University of Aeronautics and Astronautics have developed an obstacle detector for the blind, as Science and Technology Daily reported.
According to the report, the initial cost of the obstacle detector is 30 yuan or $4.50 US.
The detector has a single chip and two ultrasonic sensors which can distinguish and measure obstacles and roadblocks in front of it.
By holding the device in the palm of their hand, blind people can traverse the road more easily as the device will make a sound when there are obstacles ahead.