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.
出处
《压电与声光》
CAS
CSCD
北大核心
2008年第4期435-439,共5页
Piezoelectrics & Acoustooptics
关键词
流速仪
CPLD
单片机
旋桨式传感器
flow meter
CPLD
single chip microcomputers propeller type flow sensor
