摘要
采用AT89C51单片机作为控制器,利用超声测距的原理,设计了一种超声波导盲装置。该装置可以对盲人前面道路上的障碍物进行距离探测并把障碍物距离信息转换成声音提示,盲人可以根据提示声音的频率变化的来判断有无障碍物及离障碍物的距离,达到导盲作用。
This article recommends a device of ultrasonic wave guide which is designed to adopt AT89C51 single-chip microprocessor computer as controller and apply the principle of ultrasonic distance measuring. The device can detect the distance between the blind and an obstruction in the road ahead and convert the message to a sound reminder .According to frequency variation of the reminding sound, it will enable the blind to judge whether there is an obstruction and the distance from the obstruction then accomplish the purpose of guiding the blind.
出处
《微计算机信息》
北大核心
2006年第05Z期100-102,共3页
Control & Automation
关键词
超声波
单片机
导盲
Ultrasonic wave
Single-chip microprocessor
Guiding the blind
