The mower has obstacle detection sensors to avoid collisions with garden furniture or toys. A child safety key restricts use to prevent accidental activation and a blade stop mechanism halts the ...

This story is from April 23, 2016 A fanta-stick idea of using ultrasonic sensors to help visually impaired walk safe Shrutika Sukhi / Apr 23, 2016, 22:27 IST Follow us ...

BEIJING: Students from China's Nanjing University of Aeronautics and Astronautics have developed an obstacle detector for the blind with much lower cost, Friday's Science and Technology Daily reported ...