| 摘要 |
<p>The automatic orientation device for walkers and the blind is a small light weight and easily portable instrument. It contains a digital calculating mechanism for continually determining the vectorial sum of the steps made by converting these into pulses and by automatic determination of the direction by means of a magnetic direction emitter in order to calculate the distance covered from the point of departure, wheather by walking, running or horse riding, with indication of the direction. The user is thus provided with optical or acoustic information or with perceptible vibrations indicating the distance covered. In this way any person, including the blind, can find his way to the point of departure without any means of assistance, or geographical map or town plan, and in particular when the visibility is extremely poor.</p> |
