Robot wheelchair that follows people developed - video
Japanese researchers have developed a robotic wheelchair that automatically follows a human companion.
The wheelchair employs a distance sensor that tracks the position of a companion person, keeping the wheelchair always at the person's left.
It also tracks the position of the companion's shoulders, anticipating where that person is moving next. Even if the companion stands in one place
and simply rotates, the chair will circle around to remain abreast of the companion.