The dissertation is focusing on the detection of vortex frequency, which is the key technical problem of vortex flowmeter, a sort of promising and rapidly developing flowmeter.
本论文主要研究目前发展势头十分良好的涡街流量计中的关键技术问题——旋涡频率的检测。
A pulse output model digital vortex flowmeter is developed successfully.
成功实现了一台脉冲输出型数字涡街流量计。
The measuring principle and application of vortex flowmeter are introduced.
介绍涡街流量计的测量原理及应用。
Abstract: The measuring principle and application of vortex flowmeter are introduced.
文摘：介绍涡街流量计的测量原理及应用。
There are two kinds of vortex type oscillatory flowmeter: vortex flowmeter and vortex precession flowmeter.
基于旋涡流体振荡原理的流量计主要有两种：涡街流量计和旋进旋涡流量计。
The processing circuits in the vortex flowmeter are unable to ensure the measuring accuracy in the industrial fields.
涡街流量计中的处理电路不能保证仪表在工业现场的测量精度。
On the basis of traditional vortex flowmeter, a multi-variable vortex flowmeter based on HART communication protocol is designed.
在传统涡街流量计的基础上，设计出带有HART通讯协议的多变量涡街流量计。
This paper discussed the design principle of detection circuits for explosion-proof vortex flowmeter and analyzed some specific circuits in detail.
本文论述了防爆型涡街流量计检测电路的设计原则，并对具体电路作了较详尽的剖析。
The intelligence vortex flowmeter system is consisted of vortex sensor, temperature sensor, pressure sensor, LCD module and master controller, etc.
智能涡街流量计系统由涡街传感器、温度传感器、压力传感器、液晶显示模块、主控制器等几个部分组成。
This paper, based on flow measuring, presented the selection, design and application of gas measuring by the Yokogawa vortex flowmeter made in Japan.
在介绍流量计量基础上，重点介绍由日本横河涡街流量计进行煤气计量的选型及应用。
Through experiments, it is indicated that the measurement range is expanded within accuracy level by vortex flowmeter with nonlinear modified method.
实验表明，该方法在保证精度的前提下可以有效地扩展量程。
The traditional signal processing methods that amplify, filter, rectify signal and count, which are used in vortex flowmeter now, has shortage in extracting real flow signal from noise.
目前涡街流量计所采用的放大、滤波、整形、计数的处理方式，在从噪声中提取流量信号方面存在较大的局限性，只能采用限制量程比、不测小流量等方法来抑制噪声。
The spectrum center correcting is applied to the digital signal processing system for vortex flowmeter, and the results show the measuring precision of flowmeter is improved by this method.
将频谱重心校正方法应用于涡街流量计数字信号处理系统，实验结果表明该方法提高了流量计的测量精度。
A real time processing system based on a digital signal processor is described in this paper, and the signal frequency of vortex flowmeter is computed by means of an adaptive notch filtering method.
本文介绍了以数字信号处理器(dsp)为核心的实时处理系统，采用自适应陷波方法计算涡街流量计信号的频率。
Vortex flowmeter is one of the most widely used flow measurement devices.
涡街流量计是最为常用的流量测量装置之一。
Vortex Flowmeter is one of the most important implements of flow measuring in modern chemical industry.
涡街流量计是现代化工生产中测量流量的重要工具之一。
The intelligent Vortex Flowmeter introduced in this paper expands the low limitation through hardware combining with software.
本文中设计的智能涡街流量计采用硬件和软件相结合的方案来扩大仪表量程下限。
The measuring principle of Vortex flowmeter is introduced and the causes are analyzed, which could affect the precision of flow measuring.
另外还简述了涡街流量计的测量原理，分析了影响涡街流量计测量精度的因素。
Vortex flowmeter is a widely used hydro-vibration flowmeter. Its poor noise to signal ratio and anti-jamming ability, however, limit its application.
涡街流量计测量应用广泛，但小流量信噪比低、抗干扰性能差。
Vortex flowmeter is a widely used hydro-vibration flowmeter. Its poor noise to signal ratio and anti-jamming ability, however, limit its application.
涡街流量计测量应用广泛，但小流量信噪比低、抗干扰性能差。
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