摘要
设计了由声音导引小车运动的系统,该系统可以利用声音信号实现实时物体定位。系统由地面部分和移动小车部分构成。地面装置通过MSP430F449单片机控制nRF24L01无线模块发出控制指令,小车接收到相应控制指令后车上的扬声器发声。地面部分根据发送指令到接收声音的延迟时间,计算小车的坐标位置,导引小车运动。通过设计放大滤波电路,减少了环境噪声对系统性能的影响,提高了定位精度。
The sound-guided system is designed to achieve real-time positioning. The system consists of the ground segment and mobile car part. nRF24L01 is controlled by MSP430F449 to send the command. The car receives the corresponding control instructions and makes the car sound. The ground part calculates the car location coordinates according to the sound delay and guides trolley movement. Suitable amplifiers and filter circuit are designed to reduce the environmental impact of noise, improve the positioning accuracy.
出处
《计算机时代》
2014年第6期41-43,共3页
Computer Era
