摘要
为实现声源定位系统的小型化,在OK6410开发板上开发该系统。系统采用Linux-2.6.28版本内核,通过编写内存映射驱动来提高通道数据的采集速率,达到采集声源信号的速率要求,结合波束形成算法定位到声源方位角,以S3C6410为处理器外接AD7606八通道同步数据采集芯片,设计了一个8麦克风均匀线阵的声源实时定位系统。通过在系统上的大量实验测试,表明系统数据采集速率快,算法定位精度高,运算速度快,可用于实时定位系统。
In order to achieve sound localization system miniaturization,this paper developed the system in the OK6410 development board. This system used Linux-2. 6. 28 version of the kernel,by writing the memory mapped drive to improve the channel data acquisition rate to achieve the rate of acquisition sound source signals. Combining beamforming algorithm locate the sound source azimuth. The paper designed an eight microphone ULA sound source RTLS with the processor S3C6410 and external AD7606 eight-channel synchronous data acquisition chip. By a large number of experimental tests on the system that the system has quick data acquisition rate,high precision positioning algorithm,fast computing speed,can be used for real-time positioning system.
出处
《仪表技术与传感器》
CSCD
北大核心
2014年第7期68-71,共4页
Instrument Technique and Sensor
基金
国家自然科学基金项目(61172029)
