RANGEFINDER SYSTEM FOR THE BLIND

描述（来自摘要）：当在不熟悉的路线上旅行时， 人们通常观察远处的已知地标以保持他们的 这是一个盲人不具备的能力。 拟议 测距仪系统具有光学三角测量的能力， 距离，产生听觉输出，根据 地标范围 在优选的实施例中，声音将在 回声的形式，回声越大， 的距离.

DESCRIPTION (from abstract): When traveling on unfamiliar routes, sighted individuals typically view distant known landmarks to maintain their orientation, a capability a blind person does not have. The proposed rangefinder system has the capability of optically triangulating the distance of such landmarks, producing an auditory output according to landmark range. In the preferred embodiment, the sounds will be in the form of echo, with greater echo latencies corresponding to greater distances.