scholarly journals Development of Resonant Density Meter and Its Application in Tailings Backfilling

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Xiaozhou Cheng
Keyword(s):  
Measurement Accuracy ◽  
Industrial Applications ◽  
Resonant Circuit ◽  
Liquid Density ◽  
Practical Application ◽  
Series Resonant ◽  
Stable Manner ◽  
Slurry Flows ◽  
Voltage Signal ◽  
Safety And Stability

To solve the problems of low measurement accuracy, poor safety, and stability of the traditional pipeline liquid density meter, a MIMR-XZ6 pipeline liquid density meter was designed based on the vibration mathematical model of fluid flowing through the pipeline. The pipeline liquid densitometer mainly consisted of a vibration tube for the liquid passing by, a distributed inductance encircled around the inner wall of the vibration tube, a resistor, and a capacitor, respectively, connected to both ends of the inductance, and the inductor, resistor, and capacitor formed the RLC series resonant circuit; an excitation signal source which could generate an alternating current (AC) voltage signal in different frequencies was applied to both ends of the RLC series resonant circuit, and the AC voltage signal was connected to the series branch formed by the inductance and the capacitor to capture the electrical signals. In view of the practical application of this liquid pipe densitometer in tailings backfilling, the installation method of the liquid pipe densitometer is flexible, and the slurry flows in a fluent and stable manner, meeting the measuring requirement of the resonant concentration analyzer. The MIMR-XZ6 pipeline liquid densitometer was used for online detection of ore pulp density, and the precision of this densitometer met the needs of industrial applications.

Development of active filter with series resonant circuit

2003 ◽  
Author(s):  
A. Nakajima ◽  
K. Oku ◽  
J. Nishidai ◽  
T. Shiraishi ◽  
Y. Ogihara ◽  
...  
Keyword(s):  
Active Filter ◽  
Resonant Circuit ◽  
Series Resonant

scholarly journals A Three-Phase Diode Rectifier Having a Series Resonant Circuit on the AC Side

1989 ◽  
Vol 109 (2) ◽  
pp. 130-130
Author(s):  
Toshihiko Tanaka ◽  
Hiroharu Fugou ◽  
Hirofumi Akagi ◽  
Akira Nabae
Keyword(s):  
Resonant Circuit ◽  
Three Phase ◽  
Series Resonant

scholarly journals A Quantitative Ultrasonic Travel-Time Tomography to Investigate Liquid Elaborations in Industrial Processes

Sensors ◽  
2019 ◽  
Vol 19 (23) ◽  
pp. 5117 ◽  
Author(s):  
Panagiotis Koulountzios ◽  
Tomasz Rymarczyk ◽  
Manuchehr Soleimani
Keyword(s):  
Sound Velocity ◽  
Travel Time ◽  
Spatial Information ◽  
Industrial Applications ◽  
Industrial Processes ◽  
Liquid Density ◽  
Ultrasound Tomography ◽  
Imaging Device ◽  
Fluid Mass ◽  
Travel Time Tomography

This work presents an ultrasound tomography imaging system and method for quantitative mapping of the sound speed in liquid masses. It is highly desirable to be able to inspect vessel fluid mass distribution, notably in the chemical and food industrial operations. Optimization of industrial reactors has been crucial to the improvement of industrial processes. There is a great need to investigate how and if tomographic imaging sensors could aid the automatic control of these process tanks. Single-measurement ultrasound techniques and especially spectrometric methods have been a subject of study of industrial applications. Tomographic systems provide key multi-dimensional and spatial information when compared to the well-established single-channel measurement system. Recently, ultrasound tomography has attracted a great deal of interest in a wide spectrum of industrial applications. The system has been designed as 32 piezoelectric ring-array positioned in a 30 cm tank, with an excitation frequency of 40 kHz. Two-dimensional transmission travel-time tomography was developed to reconstruct the fluid mass distributions. Prior experiments are mainly based on inclusions of a few centimetres and on a liquid solution of different concentrations. They have been conducted to test the spatial and quantitative resolution of the ultrasound imaging device. Analysing the reconstructed images, it is possible to provide accurate spatial resolution with low position errors. The system also demonstrated inclusion movement with a temporal resolution of 4 frames per second (fps) in dynamical imaging sense. Sound velocity quantitative imaging was developed for the investigation of ultrasonic propagation in different liquids. This work, for the first time, shows how quantitative sound velocity imaging using transmission mode time of flight data could be used to characterize liquid density distribution of industrial reactors. The results suggest that ultrasound tomography can be used to quantitatively monitor important process parameters.

Differential Magnetoelastic Compressive Force Sensor Utilizing Two Amorphous Alloy Ring Cores

2009 ◽  
Vol 154 ◽  
pp. 23-27
Author(s):  
Adam Bieńkowski ◽  
Roman Szewczyk ◽  
Jacek Salach ◽  
Roman Kolano
Keyword(s):  
Amorphous Alloy ◽  
High Stress ◽  
Compressive Force ◽  
Force Sensor ◽  
Sine Wave ◽  
Stress Sensitivity ◽  
Practical Application ◽  
Magnetoelastic Sensor ◽  
Voltage Signal ◽  
Distribution Of Stresses

Paper presents the results of investigation on functional characteristics of magnetoelastic compressive force sensor utilizing two Fe81Si4B15 amorphous alloy ring-shaped cores. Uniform distribution of stresses in one of two cores was achieved owing to special non-magnetic backings. Signal from sensing coils of cores was connected to differential amplifier, whereas sine wave voltage signal was applied to magnetizing circuit. High stress sensitivity of developed sensor was indicated together with expected reduction of temperature sensitivity of magnetoelastic sensor. These results confirm, that differential configuration of magnetoelastic sensor is suitable for practical application in sensors development.

Simulation and Experimental Verification of Silicon Microgyroscope's Closed-Loop Driving Circuits Based on Cadence

2015 ◽  
Vol 645-646 ◽  
pp. 543-547
Author(s):  
Wei Feng Tang ◽  
Guo Ming Xia ◽  
An Ping Qiu ◽  
Yan Su
Keyword(s):  
Experimental Verification ◽  
Closed Loop ◽  
Experimental Results ◽  
Resonant Circuit ◽  
Driving Frequency ◽  
Q Value ◽  
Output Current ◽  
Series Resonant ◽  
Stability Time ◽  
Very High

The output-current of silicon microgyroscope is at the level of 10-7A, so the requirements for circuits’ SNR are very high. This paper conducts the simulation of closed-loop driving circuits in Cadence on the basis of a RLC series resonant circuit. It turns out that experimental results fit the simulation which has a great significance for improving the property of circuits. First of all, the operating principle of silicon microgyroscope is introduced. Secondly, a RLC series resonant circuit is established by measuring Q value and driving frequency. Then the overall simulation is conducted in Cadence combined with chips’ models offered by the manufacturers. Finally, the accuracy of simulation is verified by experiments. Experimental results show that, the relative error of driving sense signal’s value is 0.5%, for stability time the value is 0.6% and for driving frequency the value is 38ppm. Experimental results agree well with the simulation, which confirms simulation’s accuracy. This has a great significance for improving the property of circuits.

scholarly journals Direct excitation of a series resonant circuit by rectangular voltage pulses. Analysis, numerical evaluation

2019 ◽  
Vol 0 (1(83)) ◽  
pp. 201-205
Author(s):  
Юрій Вікторович Батигін ◽  
Тетяна Володимирівна Гаврилова ◽  
Світлана Олександрівна Шиндерук ◽  
Георгій Сергійович Серіков ◽  
Дмитро Анатолійович Коваленко
Keyword(s):  
Numerical Evaluation ◽  
Resonant Circuit ◽  
Direct Excitation ◽  
Series Resonant ◽  
Voltage Pulses

scholarly journals Over One-Year Long-Term Laboratory Tests of pH Electrodes in Terms of Industrial Applications Checking Stabilities of Their Parameters and Their Influence on Uncertainties of Measurements

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4102
Author(s):  
Alicja Wiora ◽  
Józef Wiora
Keyword(s):  
Measurement Accuracy ◽  
Tap Water ◽  
Industrial Applications ◽  
Ph Measurements ◽  
Buffer Solutions ◽  
Accuracy Of Measurements ◽  
One Year ◽  
Aging Models ◽  
Ph Electrodes

Glass pH electrodes are still successfully applied in the chemical and environmental industry. During their long-term use, periodic calibration is required to maintain the required accuracy of measurements because the parameters of the electrodes change over time. This work presents an aging of 11 pH electrodes within approximately 600 days in tap water. During this period, potentials of all electrodes in five buffer solutions were measured 44 times. This allowed determining the aging models of the electrodes. Models in other mediums might be different. Changes in slope, standard potential, hysteresis, and linearity of the characteristics were the objects of observations. A method for predicting electrode parameters is proposed. Furthermore, the procedure for estimating the uncertainty of pH measurements considering the aging of the electrodes is described. As a result of this work, a model of the aging process of pH electrodes in tap water can be constructed and subsequently, the measurement accuracy in the periods between calibrations can be improved.

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