涡街流量计

基于DSP的低成本涡街流量计信号处理系统

DSP-based low cost signal processing system for vortex flowmeter

基于DSP、具有谱分析功能的涡街流量计信号处理系统

A Signal Processing System of Vortex Flowmeter based on DSP with Spectrum Analyzing Function

基于递推DFT算法的涡街流量计信号处理系统

The Signal Processing System of Vortex Flowmeter Based on Recursive DFT Algorithm

基于MSP430型单片机的智能涡街流量计转换电路的设计

Design of Conversion Circuit for Intellect Vortex Flowmeter Based on MSP430

具有HART通信功能的智能涡街流量计设计

Design of a smart vortex shedding flowmeter with function of HART communication

基于MSP430的低功耗数字涡街流量计研究

Research on Digital Vortex Flowmeter with Low Power Consumption Based on MSP430

基于HART协议的温压补偿型涡街流量计的设计

Design of vortex flowmeter with temperature and pressure compensation based on HART protocol

基于MSP430的智能就地显示涡街流量计

Smart Local Display of Vortex Flowmeter Based on MSP430

基于FF协议的智能涡街流量计设计

Design of the Smart Vortex Flowmeter Based on FF Protocol

自适应频率测量方法（AMF）及其在涡街流量计中的应用

The adaptive measurement of frequency and its application to vortex flowmeter

基于MSP430的超低功耗电容式涡街流量计

ULP Smart Capacitance Vortex Flowmeter Based on MSP430

文中提出利用涡街流量计和涡轮流量计的响应函数来控制气液分离，其控制算法是基于BP网络改进的PID控制算法。

The responsion functions of the eddy street flowmeter and the turbine control the separation of the gas-liquid , it 's arithmetic was based on BP neural network improved PID control .

这种带有HART协议的温压补偿型涡街流量计在国内必将具有良好的应用前景。

The intelligent vortex flowmeter with temperature and pressure compensation which accords with HART protocol must have a widely applying space .

着重阐述了HART协议在涡街流量计中的软硬件实现方法，并通过HART调制解调器实现了仪表与上位机之间的双向数字通讯。

The design method of software and hardware is described for implementing HART protocol communication in vortex flowmeter . and intercommunication between instrument and computer with HART modems are realized .

通过建立双钝体涡街流量计的物理模型和数学模型，应用基于有限体积法的Fluent软件对双钝体的流动现象进行了仿真研究。

By establishing the physical model and mathematics model and applying the software Fluent which is based on the finite volume method , the flow phenomena in dual bluff body vortex flowmeter is researched by simulation .

针对目前涡街流量计易受干扰，精度不高的问题，信号采集处理单元采用基于DFT的频率估计方法，实现对传感器信号频率的估计。

According to the drawbacks of be liable to interfere and poor in precision in the vortex shedding flowmeter , a new method based on DFT was used to estimate the frequency of input signal .

将小波变换用于涡街流量计，介绍了基于离散小波变换和连续小波变换功率谱估计的信号处理方法，给出了仿真步骤与结果，并讨论其特点，从而设计了基于DSP的信号处理系统。

Wavelet transformation is adopted in this paper , and the basic principles of discrete wavelet transformation and power spectrum estimation based on continuous wavelet transformation are given . The simulation steps and results are presented , and the characteristics of the two methods discussed .

与孔板流量计和罗茨流量计相比，在流速大于5m／s时涡街流量计的准确度较高，并具有测量范围宽，安装、维修方便，清洗、维护费用低等特点。

The practice proves that this flowing meter has high accuracy , wide limite of measurement , convenient maintenance , and low maintenance cost , etc , compared with hole-plate flowing meter and Roots flowing meter .

介绍了HART协议规范，详细阐述HART协议在多变量涡街流量计中的软硬件实现方法，并给出系统设计结构和部分硬件电路组成。

The criterion of HART protocol is introduced , and the design method of software and hardware is described for implementing HART protocol communication in multi-variable vortex flowmeter . The structure of system and partial circuit of hardware is present .

邢娟和段瑞峰研究成功的基于MSP430单片机和DSP双核处理系统的脉冲输出型数字涡街流量计虽然可有效扩展测量下限，但由于采用双核结构，功耗高。

The pulse output type digital vortex flowmeter based on MSP430 MCU and DSP duel-core processing system which successfully developed by Xing Juan and Duan Ruifeng can extend measurement lower limit effectively though , while power consumption could be quit high because of using duel-core structure .

在简单介绍了HART协议的基本内容和涡街流量计的基础上，着重论述了具有HART通信功能的智能涡街流量计的设计以及此流量计的特点和主要功能。

On the basis of the simple description of HART protocol and the vortex shedding flowmeter , this paper introduces mainly the design of the vortex shedding flowmeter with HART communication functions and the main characteristic and functions of the flowmeter .

用片上外设丰富的DSPs芯片&TMS320LF2407A，设计了一套涡街流量计数字信号处理系统，该系统体积小、成本低。

A digital signal processing system was designed for the vortex fl ow meteres with a DSPs chip & TMS320LF2407A that possesses abundant peripherals on its chip , so this system is of small dimension and low cost .

介绍了以超低功耗16位单片机MSP430为核心、采用微低功耗的集成电路和贴片元器件构成的涡街流量计系统及设计。

The design of vortex flowmeter system with low power consumption is introduced . The flowmeter is composed of MSP430 , an ultra-low power consumption single chip computer , as the kernel and micro-low power consumption IC as well as stick-on components .

涡街流量计的使用环境复杂，使用RS232进行数据传输已经逐渐地不能满足用户的要求，而短消息业务具有RS232无与伦比的优越性，所以采用短消息业务来完成小流量数据传输已经越来越受欢迎。

The use environment of vortex flowmeter is complicated . So data transmission with RS232 becomes unsuitable for users ' needs gradually . With incomparable advantages of SMS over RS232 , it becomes more and more welcome to use SMS for the transmission of small-streamed data .

介绍了以MSP430型单片机为核心的智能涡街流量计转换电路的设计与开发，涡街传感器前置放大板送出的脉冲信号进行采集处理并送D/A转换模块进行标准4～40mA输出。

The design and development of the conversion circuit to an intelligent vortex flowmeter were introduced . The converter used MSP430 microcontroller as the main component , which collected , processed the pulse signal from the pre-amplified circuit and sent out 4 ~ 40 mA standard signal .

论文还讨论了用于智能涡街流量计的现场总线系统的整体设计。

A field-bus system for intelligent vortex flow-meter is discussed also .

数字式涡街流量计应用中关键问题的研究

Study on Key Issues in the Application of Digital Vortex Flowmeter

基于网络通信的低功耗涡街流量计

Low Power Consumption Vortex Shedding Flow Meter Based on Network Communication

涡街流量计数字信号处理和传感器动态非线性建模

Signal Processing of Vortex Flowmeters and Nonlinear Dynamic Modeling of Sensors

管壁差压式涡街流量计测量影响因素分析

Impact analysis of vortex flowmeter measured with duct-wall differential pressure method