RANGEFINDER SYSTEM FOR THE BLIND

描述(摘自摘要)：在陌生的路线上旅行时， 个人通常查看遥远的已知地标以维护他们的 定向，盲人所不具备的能力。建议数 测距系统具有光学三角定位的能力 这些地标的距离，产生根据如下的听觉输出 里程碑式的范围。在优选实施例中，声音将在 回声形式，回声潜伏期越大，对应的回声越大 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.