Based on the bat s echolocation theory, a new model of navigation system for the blind was designed using microprocessor and ultrasonic devices.

• 基于蝙蝠回声定位的原理,本文设计了一种新的超声波盲人导航,对盲人前面道路上的障碍物进行距离和方向探测,系统把方位和障碍物大小信息转换成可听声。