基于NIOSⅡ的超声波明渠流量计设计

Design of ultrasonic flowmeter based on NIOSⅡ

嵌入式系统因其高可靠性、低成本、低功耗、软硬件可裁剪而广泛应用于智能式仪表测量领域。通过在FPGA中的SOPC定制外围设备,提出了一种基于NIOSⅡ软核处理器的明渠流量测量系统,阐述了人机交互、数据处理、串行通讯等模块功能并进行相应的软件程序设计。实验结果表明,该流量计不仅抗干扰能力强、测量精度高、稳定性好,而且因其可定制性提高了系统的灵活性及易维护性。

Embedded systems are widely used in the field of Intellectualized Instrumentation for the features of high reliability, low cost, low power, software and hardware easily removed. Open channel flow measurement system based on NIOS Ⅱ softcore processor has been put forwarded by using the Customized peripherals of SOPC in FPGA, with the Implementation function modules of Human-Machine Interaction, data processing, serial communication, etc. Also with the software design. The result confirmed that the flowmeter is not only with the features of high accuracy, good stability, but also improved system flexibility and ease of maintenance for the reason of Customization.