在大流量测量系统中,为了完成传播时间测量、超声回波信号采集、数据分析以及图形显示等功能,往往需要多CPU进行协同处理,这将导致整个系统显得臃肿繁杂,文中系统采用单片FPGA并在其内部例化Micro Blaze软核处理器,应用结果表明,该系统不仅保证了测量精度,同时还使系统运行更加稳定可靠。 In the large flow measurement system, in order to complete the propagation time measurement, ultrasonic echo signal acquisition, data analysis and graphic display and other functions, often require multiple CPU co-processing, which will lead to the entire system appears bloated and complicated, the article system uses a single FPGA And in its internal instantiation of Micro Blaze soft-core processor, the application results show that the system not only ensures the measurement accuracy, but also make the system more stable and reliable operation.