| Summary: | 碩士 === 健行科技大學 === 資訊工程所 === 101 === This paper aims to propose a novel positioning strategy of an ultrasonic guiding
system for the blind. Many presetting points are located in the effective measurement
area of the guiding system. After three ultrasonic receivers catch the echo signals
reflected from an obstacle under detection, only simple mathematical calculations
and comparison of three clock sets with the presetting points are required to find the
position of the obstacle. The presetting points would be candidates for obstacle
position if the errors of the three clock sets are all within acceptable margins. This
proposed strategy could solve the serious positioning problem in Newton-Raphson
iteration method, which is due to a little clock error. Besides, the strategy can be
implemented more easily in an embedded system, which is less available for
mathematical calculations.
|
|---|
