College students have achieved a laudable feat after they managed to develop a cheap obstacle detector to held the blind.
According to the report, the initial cost of the obstacle detector is 30 yuan (about 4.5 dollars).
Domestic enterprises currently manufacture devices for visual impairments, equipped with cameras, however, such devices range from 3,000 to 8,000 yuan.
The detector composed of 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.
“The alarm rings once when a person comes within one meter of an obstacle.
“The alarm rings twice when the person is within 60 cm, three times at 30 cm,” Developer Ma Wang was quoted as saying.
The detector has not been industrialised.
Ma Wang said his team would make it more portable and stable as well as smaller and more accurate at detecting objects.
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