【摘要】 提出了一种室内定位方案,利用红外作为发射超声信号的同步计时信号、FPGA内部多路计数模块同步对超声计数,并将采样得到的多路数据通过SPI总线分别上传至主控芯片STM32,并对数据进一步处理,最后由定位算法得到目标点的位置。主要实现的功能是FPGA多路信号采集、FPGA与SPI通信的设计以及定位算法的设计,精度可以达到cm级,在实际应用中具有较高的参考价值。更多还原

【Abstract】 In this paper,an indoor positioning scheme is proposed:using infrared as the synchron-ization timing signal of the ultrasonic signal,the internal multi-channel counting module of the FPGA synchronizes the ultrasonic count and uploads the sampled data to the master chip STM32 through the SPI bus.The data is further processed,and finally the position of the target point is obtained by the positioning algorithm.The main function are FPGA multi-channel signal acquisition,FPGA and SPI communication design and positioning algorithm design,which has a high reference value in practical application.更多还原