It simplifies the outer circuit design by adopting the digital signal processor ( DSP) and fulfills the real-time dynamic multi-sensor measuring and controlling by the supersonic data communication with the central computer through the bus of CAN. 系统利用数字信号处理器(DSP)的片内I/O端口和其他外围设置,简化外围电路设计,通过CAN总线完成超声数据与上位机通信,实现对多路超声传感器的实时动态监测和控制。