声音导引系统设计  

Design of sound guidance system

作　　者：李小斌[1] 汤子坫[1] 杜健锋[1] 张军[1] 

机构地区：[1]宝鸡文理学院电子电气工程系,宝鸡721007

出　　处：《国外电子测量技术》2010年第3期68-71,83,共5页Foreign Electronic Measurement Technology

摘　　要：阐述了基于单片机的声音导引系统设计方法,给出了系统软、硬件设计的关键技术。移动声源采用智能小车作为平台,声音信号探测采用3个相同的驻极体麦克风,通过检测声音信号到达任意两个探测器的时差来实现小车运动状态的控制,最终引导小车到达二维平面中指定位置。其误差信号的传输依靠无线模块来实现。小车到达指定位置后,进行声光报警并显示平均速度。通过实验测试,结果表明该系统具有较高的定位精度、较快的平均速度和响应速度。系统采用AT89S52作为核心处理器,具有较高的性价比。Design methods of a sound guidance system based on microprocessor are expounded and the key technology of hardware and software about the system is also presented.The mobile source uses intelligent car as platform and three identical electret microphones are applied to detect audio signals.Motion state of the car can be controlled by judging time difference that the voice signal arrive any two detectors.Eventually the car is guided to the specified planimetric position.Error signal transmission is depended on wireless modules.The sound-light alarm can be used while the average speed is showed when the car arrives the position.Through the test,the results show that the system has high precision,high average speed and fast response.A.good cost performance can be get by using AT89S52 as the core of the system controller.

关 键 词：声音导引 智能小车 AT89S52 驻极体 移动声源 MMC-1 

分 类 号：TP224[自动化与计算机技术—检测技术与自动化装置]