摘要
为设计一种声音导引系统,以ARM7作为系统的控制核心,采用NEC电机控制芯片D78F1203外加L298全桥驱动步进电机小车作为移动声源载体,并设计三个声音接收器来检测声源的声音到三个接收器的传输时间差,利用GPS定位算法计算声源坐标,然后将声源坐标和目的地坐标数据无线传输给声源小车,使其精确移动到目的地。实验结果表明,系统运行稳定。
In order to design a sort of sound guidance system,this approach regarded ARM7 as the system control center,used NEC motor control chip D78F1203 and the full-bridge chip L298 to drive a stepper motor car as a mobile sound source vector and designed three receivers to detect time difference of sound source transmission to three receivers,using GPS localization algorithm to calculates coordinates of sound source,then data of sound source coordinates and destination coordinates was transmitted to sound source car wirelessly to make it move to the destination precisely.Experiment showed that the system worked stably.
出处
《自动化与仪表》
北大核心
2010年第12期46-49,共4页
Automation & Instrumentation
基金
国家自然科学重大基金项目(10890095)
广东省科技计划项目(2006A10102004)
东莞市科技计划项目(200910814047)
关键词
声音定位
ARM7
电机控制
无线传输
sound localization
ARM7
motor control
wireless transmission
