嵌入式多流道明渠测流系统设计  

The Design of Embedded Multi-channel Open Channel Flow Measurement System

作　　者：贺日升 周义仁[2] 吕青 李浩[2] HE Ri-sheng;ZHOU Yi-ren;Lü Qing;LI Hao(College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, China;College of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

机构地区：[1]太原理工大学电气与动力工程学院,太原030024 [2]太原理工大学水利科学与工程学院,太原030024

出　　处：《中国农村水利水电》2020年第10期184-188,共5页China Rural Water and Hydropower

基　　金：山西省重点研发计划项目(201803D221028-3);山西省应用基础研究项目(201701D121108)。

摘　　要：针对传统明渠流速仪测流过程烦琐,无法精准获取所需测点流速等问题,设计了一种基于ARM的多流道明渠测流系统方案。系统将毕托管原理与压差传感器相结合,在明渠断面中垂线布置密集测点,测流时将各测点传感器数据转换为流速,并通过曲线拟合得到断面流速分布曲线,再进一步利用公式计算得到流量。系统前端搭载的实时操作系统及图形用户界面(GUI)将参数及曲线拟合结果实时显示在液晶屏上,同时还可以自动上传至云平台。实验结果表明,该系统能够快速真实的反映测流断面水的流速分布,从而提高了在明渠测流方面的准确性,同时该系统较强的人机交互功能,极大提高了测流效率。Considering the complex flow measurement process of traditional open channel flowmeter and the inability to accurately obtain the required flow velocity,a multi-channel open channel flow measurement system based on ARM is designed.The system combines the pitot tube principle with the differential pressure sensor,arranges the dense measuring points in the vertical line in the open channel section,converts the sensor data of each measuring point into the flow velocity during the flow measurement,and obtains the section velocity distribution curve by curve fitting,and then uses the formula.The flow rate is further calculated.The hardware system is equipped with a real-time operating system and GUI,and the parameters and curve fitting results are displayed on the LCD screen in real time,and can also be automatically uploaded to the cloud platform.The experiment results show that the system can truly reflect the flow velocity distribution of the flow measurement section,which improves the accuracy of the open channel flow measurement,and the system has a strong human-computer interaction function,which has improved flow measurement efficiency.

关 键 词：ARM 多流道 毕托管 压差传感器 流速分布曲线 图形用户界面 云平台 

分 类 号：TV93[水利工程—水利水电工程] P274[天文地球—测绘科学与技术]