基于ATmega8单片机的红外导盲系统设计  

Design of ATmega8-based infrared guidance system for the blind

作　　者：黄剑平[1] 李昭代[1] 

机构地区：[1]厦门理工学院光电与通信工程学院,福建厦门361024

出　　处：《现代电子技术》2013年第13期128-130,共3页Modern Electronics Technique

基　　金：厦门理工学院科研基金(XKJJ201103)

摘　　要：为帮助盲人群体更方便地导盲,设计了用单片机控制的红外导盲系统。以ATmega8单片机为控制核心,选用基于PSD原理的红外测距传感器GP2Y0A02YK0F。单片机利用ADC端口实时采集测距传感器的模拟输出信号,并对采集到的数据进行滑动平均滤波,以消除噪声干扰。单片机将得到的距离值与门限值进行比较,并控制语音播报电路发出距离提示信息。该系统能检测前、左、右3个方向1.5 m内的障碍物信息,抗干扰性强,稳定可靠。An infrared blind guidance system with single chip microcomputer was designed for helping blind people. The system uses ATmega8 as control core and chooses the ranging infrared sensor GP2YOA02YKOF based on PSD principle. The singlechip samples the output analog signals from distance measuring sensors through ADC ports, and uses moving average filter to eliminate noise interference. The singlechip compares the distance value to the threshold value, and controls the voice broadcasting circuit to announce the distance reminding messages. The system detects the barriers from three directions including front, left and right within 1.5 meters, and it has strong anti-interference and stability.

关 键 词：GP2Y0A02YK0F 导盲 红外测距 ISD4004芯片 

分 类 号：TN215-34[电子电信—物理电子学]