Professorial challenge yields a robot.

• Author: Williams, Robert H.
• Position: Tech Talk - Brief Article

Physicist Carl V. Nelson, of the applied physics laboratory at The Johns Hopkins University, had a problem: he had developed several sensors to detect land mines, but he needed a vehicle to both transport the seekers through rough terrain and a mechanism to mark the mines.

Four undergraduate engineering students responded to his challenge. They conceived a remote-controlled robot that is armed with a color camera and a paint marker.

"I asked the students to develop a vehicle that could get off the road, off the clear paths, and go into rougher terrain such as bushes and high grass, where mine detection would be difficult to do by hand," Nelson said.

The largely...