便携式智能流速仪研制  

Research on Portable Intelligent Flow Meter

作　　者：吕霞付[1] 高月华[2] 双正文[1] 茹纯亮[1] 

机构地区：[1]重庆邮电大学自动化学院,重庆400065 [2]重庆科技学院机械工程系,重庆400042

出　　处：《压电与声光》2008年第4期435-439,共5页Piezoelectrics & Acoustooptics

摘　　要：江河湖泊水流速度和流量的测量是重要的水文资料。该文研制了一种适于野外测量使用的便携式智能流速仪,该流速仪采用旋桨式流速传感器,以W78E516B单片机为主处理器,采用CPLD芯片EPM7128SLC84组成流速数据采集接口,配以640×480点阵式LCD显示屏,具有测周、计数、双向测速等多种测量方式,可实现8个通道同步独立检测。系统具有结构简单,测量方式灵活,测量精度高,稳定可靠等特点,已用于多个水工模型水流速度的测量。River water flow rate is an important hydrological data. A portable intelligent flow meter suiting for outdoor application was presented in the paper. The meter consisted of propeller type flow sensor, W78E516B single chip microcomputer and 640 × 480 pixels LCD and so on. A complex programmable logic device （CPLD） EPM7128SLC84 was employed to construct flow sample unit. The meter had multiple measurement modes such as pulse frequency measurement and dual direction flow measurement. 8 paths flow could be measured synchronously. The meter had the advantages of simple structure, high precise, high stability and so on and has been used in some applications.

关 键 词：流速仪 CPLD 单片机 旋桨式传感器 

分 类 号：TP216.1[自动化与计算机技术—检测技术与自动化装置]