CPLD技术在时差法超声波流量计中的应用  

The Application of CPLD Technique in Time Difference Method Ultrasonic Flowmeter

作　　者：王玉辉[1] 

机构地区：[1]青岛理工大学数理系,山东省青岛市抚顺路11号266033

出　　处：《微计算机信息》2005年第08Z期117-119,共3页Control & Automation

摘　　要：研究了多通道时差法超声波流量计的测量原理,介绍了流量计系统的硬件组成和实现方法,概述了软件功能和软件流程设计。采用CPLD+AVR单片机实现高精度计时、复杂逻辑控制以及采样控制和多机通讯,以提高流量计测量系统的精度和稳定性。The measurement principle of the time difference method of the multi-channel ultrasonic flowmeter is presented. The hardware structure and realization method are introduced. The software function and work mode are overviewed. In order to enhancing flowmeter＇s precision and stability, CPLD and AVR microprocessor are applied in high precision timing, complex logical control, sampling control and multi-meter communication.

关 键 词：CPLD 时差法 超声波流量计 单片机 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]