便携式断面流量测量系统设计与实现  

Design and Implementation of Portable Sectional Flow Measurement System

作　　者：李先瑞 许斌 倪文军[1] 张磊 LI Xianrui;XU Bin;NI Wenjun;ZHANG Lei(Tianjin Institute of Water Transportation Engineering Science,Ministry of Transport,Tianjin 300456,China;School of Precision Instrument and Opto-Electronic Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[1]交通运输部天津水运工程科学研究所,天津300456 [2]天津大学精密仪器与光电子工程学院,天津300072

出　　处：《科技和产业》2023年第6期208-215,共8页Science Technology and Industry

基　　金：中央级公益性科研院所基本科研业务费专项基金项目(TKS210106,TKS220307)。

摘　　要：为便于进行明渠间流速流量及水深测量,设计一种便携式断面流量测量系统。根据现场环境对流速和测量水深要求,设计量程为20 kPa高频压力敏感元件的压力传感器,在基于标准恒流源条件下,灵敏度优于0.25%FS;设计量程10 m/s三叶锁存型霍尔效应磁敏传感器旋桨,利用水流动力推动旋桨运动获得旋桨转数,启动速度优于0.02 m/s,精度优于2%;基于ARM Cortex-M3内核作为逻辑处理单元,选用12位A/D转换器,实时存储并通过NB-Iot低功耗广域网上传数据至管理中心。该测量装置便于携带、质量轻,可单人单手操作、现场实时测量。In order to facilitate the measurement of flow velocity,flow and water depth between open channels,a portable section flow measurement system is designed.According to the requirements of the on-site environment for flow velocity and measurement water depth,a pressure sensor with a design range of 20 kPa high-frequency pressure sensitive element is designed.Under the condition of a standard constant current source,the sensitivity is better than 0.25%FS;the design range is 10 m/s.The err effect magneto-sensitive sensor propeller,the water flow is used to drive the propeller motion to obtain the propeller rotation speed,the startup speed is better than 0.02 m/s,and the accuracy is better than 2%.Based on the ARM Cortex-M3 core as the logic processing unit,12 bit A/D converter,real-time storage and upload data to the management center through NB-Iot low power wide area network.The measuring device is easy to carry,light in weight.It can be operated by one person and one hand,and it can be measured in real time on site.

关 键 词：流量 流速 水深 测量系统 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]