Smart walking stick uses ultrasound to guide the blind

The video tutorial explains the Smart Cane, a device designed to assist visually impaired individuals in navigating busy streets. It uses ultrasound waves to detect obstacles by analyzing echoes from nearby objects, offering a significant advantage over regular canes by identifying obstacles between knee and head height. The Smart Cane provides feedback through vibrations to help users avoid collisions.

What is the primary purpose of using ultrasound technology for the visually impaired?

• To improve their sense of smell

• To guide them through busy streets

• To help them read books

• To enhance hearing capabilities

How does the Smart Cane detect obstacles?

• By using a camera

• By using a GPS system

• By emitting light waves

• By sending out ultrasound waves and detecting echoes

What is a limitation of a regular cane compared to the Smart Cane?

• It is more expensive

• It requires batteries

• It is heavier

• It can only detect obstacles up to knee height

What range of obstacles can the Smart Cane detect?

• Only obstacles on the ground

• Obstacles between the knee and head

• Obstacles above the head

• Obstacles behind the user

How does the Smart Cane alert users to prevent collisions?

• By flashing a light

• By making a sound

• By sending a text message

• By using vibrations