Blind aid for recognizing obstacle, has ultrasonic distance warning devices combined with vibration motors that transmits signals to user, to enable direction and distance moderate location of obstacle based on its alignment and sensitivity

摘要

The aid has a set of ultrasonic distance warning devices combined with vibration motors, which transmits signals to a user. The warning devices enable a direction and distance moderate location of an obstacle based on its alignment and sensitivity. A laser distance measuring device or low frequency distance measuring device can carry out a distance measurement, and a loud speaker can be used instead of the vibration motors.