Pub Date : 2015-05-11DOI: 10.1109/I2MTC.2015.7151330
E. Barzi, A. Zlobin
The 2014 Particle Physics Project Prioritization Panel (P5) strategic plan for U.S. High Energy Physics (HEP) endorses a continued world leadership role in superconducting magnet technology for future Energy Frontier Programs. This includes 10 to 15 T Nb3Sn accelerator magnets for LHC upgrades and a future 100 TeV scale pp collider, and as ultimate goal that of developing magnet technologies above 20 T based on both High Temperature Superconductors (HTS) and Low Temperature Superconductors (LTS) for accelerator magnets. To achieve these objectives, a sound conductor development and characterization program is needed and is herein described. This program is intended to be conducted in close collaboration with U.S. and International labs, Universities and Industry.
{"title":"Superconductor requirements and characterization for high field accelerator magnets","authors":"E. Barzi, A. Zlobin","doi":"10.1109/I2MTC.2015.7151330","DOIUrl":"https://doi.org/10.1109/I2MTC.2015.7151330","url":null,"abstract":"The 2014 Particle Physics Project Prioritization Panel (P5) strategic plan for U.S. High Energy Physics (HEP) endorses a continued world leadership role in superconducting magnet technology for future Energy Frontier Programs. This includes 10 to 15 T Nb3Sn accelerator magnets for LHC upgrades and a future 100 TeV scale pp collider, and as ultimate goal that of developing magnet technologies above 20 T based on both High Temperature Superconductors (HTS) and Low Temperature Superconductors (LTS) for accelerator magnets. To achieve these objectives, a sound conductor development and characterization program is needed and is herein described. This program is intended to be conducted in close collaboration with U.S. and International labs, Universities and Industry.","PeriodicalId":424006,"journal":{"name":"2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings","volume":"445 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122806438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/I2MTC.2015.7151368
D. Bouchaala, Emna Mekki, T. Günther, P. Büschel, O. Kanoun, N. Derbel
The aim of this paper is to select the suitable excitation signal for a portable biomedical system based on the simulations of different signals while respecting the constraints on the system including excitation time, energy consumption, cost and ease of generation and at the same time guarantying the safety of the patient by limiting the current's magnitude. In order to get the optimum working point that minimize the trade-off between the quality of the reconstructed signal, the time consumption and the hardware complexity when applying the perturbation signal to the system under test, the interaction between pertinent parameters is determined. These parameters are the number of the samples, the sampling frequency and the noise's level. The number of samples (N) is directly related to the memory's size of the hardware used in the measurement, the sampling frequency (Fs) is associated to the clock and the noise's level is affiliated to the algorithm or the measurement hardware. To achieve a good signal's reconstruction, the ratio (Fs/f) should be lower than (~2*N) and the window's size which is proportional to (N, Fs/f) as large as possible.
{"title":"Study of excitation signals parameters for portable bioimedical devices","authors":"D. Bouchaala, Emna Mekki, T. Günther, P. Büschel, O. Kanoun, N. Derbel","doi":"10.1109/I2MTC.2015.7151368","DOIUrl":"https://doi.org/10.1109/I2MTC.2015.7151368","url":null,"abstract":"The aim of this paper is to select the suitable excitation signal for a portable biomedical system based on the simulations of different signals while respecting the constraints on the system including excitation time, energy consumption, cost and ease of generation and at the same time guarantying the safety of the patient by limiting the current's magnitude. In order to get the optimum working point that minimize the trade-off between the quality of the reconstructed signal, the time consumption and the hardware complexity when applying the perturbation signal to the system under test, the interaction between pertinent parameters is determined. These parameters are the number of the samples, the sampling frequency and the noise's level. The number of samples (N) is directly related to the memory's size of the hardware used in the measurement, the sampling frequency (Fs) is associated to the clock and the noise's level is affiliated to the algorithm or the measurement hardware. To achieve a good signal's reconstruction, the ratio (Fs/f) should be lower than (~2*N) and the window's size which is proportional to (N, Fs/f) as large as possible.","PeriodicalId":424006,"journal":{"name":"2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122917930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/I2MTC.2015.7151465
Amit Krishan Kumar, M. Assaf, Sunil R. Das, S. Biswas, E. Petriu, V. Groza
This paper develops an image processing based approach for classification of vehicles with the objective of their parking. In the paper, the heights and lengths of the vehicles are first measured on applying image processing and feature extraction techniques. Then, based on the information of the heights and lengths of the vehicles, the vehicles' eligibility to park in a specific parking lot is determined under condition of certain constraints. The determination of the heights and lengths are carried out by comparing the maximum height for a set of vehicles. The system was implemented using MATLAB and the developed technique was tested for accuracy considering various classes of vehicles. For ease of implementation, the system incorporates a camera mounted on a flat surface with fixed pixel setting.
{"title":"Image processing based system for classification of vehicles for parking purposes","authors":"Amit Krishan Kumar, M. Assaf, Sunil R. Das, S. Biswas, E. Petriu, V. Groza","doi":"10.1109/I2MTC.2015.7151465","DOIUrl":"https://doi.org/10.1109/I2MTC.2015.7151465","url":null,"abstract":"This paper develops an image processing based approach for classification of vehicles with the objective of their parking. In the paper, the heights and lengths of the vehicles are first measured on applying image processing and feature extraction techniques. Then, based on the information of the heights and lengths of the vehicles, the vehicles' eligibility to park in a specific parking lot is determined under condition of certain constraints. The determination of the heights and lengths are carried out by comparing the maximum height for a set of vehicles. The system was implemented using MATLAB and the developed technique was tested for accuracy considering various classes of vehicles. For ease of implementation, the system incorporates a camera mounted on a flat surface with fixed pixel setting.","PeriodicalId":424006,"journal":{"name":"2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131393401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/I2MTC.2015.7151259
Sumayya Abbas, Taha Ali, Uzair S Gilani, Shayan Ahmed, Iqra Sajid, F. Amir, Tariq M. Khan
A cost effective PC based Eddy Current Testing System is designed and developed to detect surface cracks in non-magnetic metals. The developed system is composed of Constant Current AC Source for excitation of the probe; and demodulation circuitry for acquisition of the signal from the crack. Eddy Current Testing Probe is also designed using the Analytical Approach. Surface cracks were successfully detected through developed system. The flaw signal is also plotted in real time on PC. Data logging feature and position sensing is also incorporated.
{"title":"PC based Eddy Current non-destructive testing (NDT) system","authors":"Sumayya Abbas, Taha Ali, Uzair S Gilani, Shayan Ahmed, Iqra Sajid, F. Amir, Tariq M. Khan","doi":"10.1109/I2MTC.2015.7151259","DOIUrl":"https://doi.org/10.1109/I2MTC.2015.7151259","url":null,"abstract":"A cost effective PC based Eddy Current Testing System is designed and developed to detect surface cracks in non-magnetic metals. The developed system is composed of Constant Current AC Source for excitation of the probe; and demodulation circuitry for acquisition of the signal from the crack. Eddy Current Testing Probe is also designed using the Analytical Approach. Surface cracks were successfully detected through developed system. The flaw signal is also plotted in real time on PC. Data logging feature and position sensing is also incorporated.","PeriodicalId":424006,"journal":{"name":"2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131497759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/I2MTC.2015.7151356
Yifei Zhao, W. Yin, A. Peyton, C. Ktistis, D. Butterworth
The electromagnetic responses of metal objects can be determined by their electromagnetic polarizability tensors. In landmine detection and geophysics, the electromagnetic tensors of metal objects are usually determined from multi-position measurements or simulations. In this paper, the electromagnetic tensors of metal objects are obtained from rotation measurements. This rotation measurement method can be applied to magnetic sensors with magnetic fields from one direction, e.g. in-line metal detectors.
{"title":"Determining the electromagnetic polarizability tensors of metal objects from rotation measurements","authors":"Yifei Zhao, W. Yin, A. Peyton, C. Ktistis, D. Butterworth","doi":"10.1109/I2MTC.2015.7151356","DOIUrl":"https://doi.org/10.1109/I2MTC.2015.7151356","url":null,"abstract":"The electromagnetic responses of metal objects can be determined by their electromagnetic polarizability tensors. In landmine detection and geophysics, the electromagnetic tensors of metal objects are usually determined from multi-position measurements or simulations. In this paper, the electromagnetic tensors of metal objects are obtained from rotation measurements. This rotation measurement method can be applied to magnetic sensors with magnetic fields from one direction, e.g. in-line metal detectors.","PeriodicalId":424006,"journal":{"name":"2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131602285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/I2MTC.2015.7151512
Johana Mohamad Elmy, Liyana Mohmad Ameran Hanis, A. R. Ruzairi, Mohd Faizan Marwah Omar
In today's industrial environment, it is common to see the use of pipes or vessels to transfer mixtures of materials or products along them. However, the measurement of the amount delivered can only be done in one way: isolate the components first; then meter, weigh or measure the volume for each individual component. This measuring procedure often stalls the production rate. This work implements a noninvasive, real time monitoring system to measure the flow concentration and velocity distributions of a two-phase (liquid-gas) flow. The system uses the combination of a specially designed twin-plane segmented Electrical Capacitance Tomography (ECT) sensor with 16 portable electrodes and the cross-correlation method as the velocity measurement technique. The measured values or data from the ECT sensor will be manipulated to reconstruct the cross sectional image of the pipeline by computer programming. These images are then cross-correlated to obtain the velocity profile of the multiphase flow. The visualization results deliver information regarding the flow regime, superficial velocity and concentration distribution in two-phase flow rate measurement system. The information obtained is able to improve: the process equipment's design, verification of existing computational modeling and simulation techniques. This technique has the possibility to promote an excellent opportunity to build methods for measuring the velocity field in multiphase flow by using noninvasive technique and cross-correlating.
{"title":"Real-time velocity profile measurement in two-phase oil/gas flow by twin-plane segmented ECT system","authors":"Johana Mohamad Elmy, Liyana Mohmad Ameran Hanis, A. R. Ruzairi, Mohd Faizan Marwah Omar","doi":"10.1109/I2MTC.2015.7151512","DOIUrl":"https://doi.org/10.1109/I2MTC.2015.7151512","url":null,"abstract":"In today's industrial environment, it is common to see the use of pipes or vessels to transfer mixtures of materials or products along them. However, the measurement of the amount delivered can only be done in one way: isolate the components first; then meter, weigh or measure the volume for each individual component. This measuring procedure often stalls the production rate. This work implements a noninvasive, real time monitoring system to measure the flow concentration and velocity distributions of a two-phase (liquid-gas) flow. The system uses the combination of a specially designed twin-plane segmented Electrical Capacitance Tomography (ECT) sensor with 16 portable electrodes and the cross-correlation method as the velocity measurement technique. The measured values or data from the ECT sensor will be manipulated to reconstruct the cross sectional image of the pipeline by computer programming. These images are then cross-correlated to obtain the velocity profile of the multiphase flow. The visualization results deliver information regarding the flow regime, superficial velocity and concentration distribution in two-phase flow rate measurement system. The information obtained is able to improve: the process equipment's design, verification of existing computational modeling and simulation techniques. This technique has the possibility to promote an excellent opportunity to build methods for measuring the velocity field in multiphase flow by using noninvasive technique and cross-correlating.","PeriodicalId":424006,"journal":{"name":"2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings","volume":"642 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133986601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/I2MTC.2015.7151588
J. Pereira, O. Postolache, V. Viegas, P. Girão
This paper presents a low cost measurement system that can be used to extract kinematic parameters from walker devices. The proposed measurement system can be easily integrated in any commercial non-smart walker device and includes mainly a set of six force sensing resistors and one 3D accelerometer, with the associated signal conditioning circuits, and the data acquisition and processing unit with wireless communication capabilities. The signals that are acquired from the sensors are used to obtain, in real time, the values of several variables related with strength, acceleration and tilt angles that are associated with the usage of walker devices. The proposed measurement system enables the detection of conditions that are related with a deficient usage of the walker device, such as, bad positioning of the walker legs during gait, amplitude and timing unbalances of the forces applied on the walker legs or on the walker hand grips, excessive values of mechanical oscillations or tilt angles of the walker device. Some calibration and experimental results are included in the paper.
{"title":"A low cost measurement system to extract kinematic parameters from walker devices","authors":"J. Pereira, O. Postolache, V. Viegas, P. Girão","doi":"10.1109/I2MTC.2015.7151588","DOIUrl":"https://doi.org/10.1109/I2MTC.2015.7151588","url":null,"abstract":"This paper presents a low cost measurement system that can be used to extract kinematic parameters from walker devices. The proposed measurement system can be easily integrated in any commercial non-smart walker device and includes mainly a set of six force sensing resistors and one 3D accelerometer, with the associated signal conditioning circuits, and the data acquisition and processing unit with wireless communication capabilities. The signals that are acquired from the sensors are used to obtain, in real time, the values of several variables related with strength, acceleration and tilt angles that are associated with the usage of walker devices. The proposed measurement system enables the detection of conditions that are related with a deficient usage of the walker device, such as, bad positioning of the walker legs during gait, amplitude and timing unbalances of the forces applied on the walker legs or on the walker hand grips, excessive values of mechanical oscillations or tilt angles of the walker device. Some calibration and experimental results are included in the paper.","PeriodicalId":424006,"journal":{"name":"2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings","volume":"279 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114487349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/I2MTC.2015.7151329
Enrico Silva, K. Torokhtii, N. Pompeo
The behavior of a superconductor in a DC magnetic field is dictated by the dissipative motion of flux quanta. Pinning of flux quanta improve the current carrying of superconductors, so that an essential part of the design of the devices and systems resides in proper modelling of such physical phenomenon. We present a method to determine the physical parameters affecting flux motion in superconducting materials in a DC magnetic field using nondestructive, high-frequency measurements of the field-induced surface impedance ΔZ(H). We discuss the reliability of the measurements of the flux motion parameters when thermal activation is present. Motivated by the extensive study of high-Tc superconductors with engineered, linearly extended pinning centers, we extend the analysis to include anisotropy and anisotropic properties. Finally, we give examples of the method using measurements of ΔZ(H) on YBa2Cu3O7-x-based materials.
{"title":"Superconductors in a DC magnetic field: Parameters derived from microwave measurements","authors":"Enrico Silva, K. Torokhtii, N. Pompeo","doi":"10.1109/I2MTC.2015.7151329","DOIUrl":"https://doi.org/10.1109/I2MTC.2015.7151329","url":null,"abstract":"The behavior of a superconductor in a DC magnetic field is dictated by the dissipative motion of flux quanta. Pinning of flux quanta improve the current carrying of superconductors, so that an essential part of the design of the devices and systems resides in proper modelling of such physical phenomenon. We present a method to determine the physical parameters affecting flux motion in superconducting materials in a DC magnetic field using nondestructive, high-frequency measurements of the field-induced surface impedance ΔZ(H). We discuss the reliability of the measurements of the flux motion parameters when thermal activation is present. Motivated by the extensive study of high-Tc superconductors with engineered, linearly extended pinning centers, we extend the analysis to include anisotropy and anisotropic properties. Finally, we give examples of the method using measurements of ΔZ(H) on YBa2Cu3O7-x-based materials.","PeriodicalId":424006,"journal":{"name":"2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117122900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/I2MTC.2015.7151284
Qijian Tang, Xiangjun Wang, Qingping Yang
Electro-optical detection systems should be calibrated prior to use, a commonly used method with an autocollimator and a high precision turntable may introduce large error in the calibration process. This paper analyzed the calibration process, and showed that the nature of the problem was attributed to the plane rotation around a non-orthogonal axis. The mirror's non-orthogonal rotation was divided into position rotation and mirror spinning, and the effects on autocollimator readout were obtained. Simulation results demonstrated that the coupling effects on elevation and azimuth become serious as the inclined angle and rotated angle increase. It is therefore necessary to separate the coupling error in the calibration process, which would provide more accurate data for further compensation.
{"title":"Coupling analysis in the calibration process of electro-optical detection systems","authors":"Qijian Tang, Xiangjun Wang, Qingping Yang","doi":"10.1109/I2MTC.2015.7151284","DOIUrl":"https://doi.org/10.1109/I2MTC.2015.7151284","url":null,"abstract":"Electro-optical detection systems should be calibrated prior to use, a commonly used method with an autocollimator and a high precision turntable may introduce large error in the calibration process. This paper analyzed the calibration process, and showed that the nature of the problem was attributed to the plane rotation around a non-orthogonal axis. The mirror's non-orthogonal rotation was divided into position rotation and mirror spinning, and the effects on autocollimator readout were obtained. Simulation results demonstrated that the coupling effects on elevation and azimuth become serious as the inclined angle and rotated angle increase. It is therefore necessary to separate the coupling error in the calibration process, which would provide more accurate data for further compensation.","PeriodicalId":424006,"journal":{"name":"2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings","volume":"263 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123353686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-05-11DOI: 10.1109/I2MTC.2015.7151390
Huajun Li, H. Ji, C. Fu, Baoliang Wang, Zhiyao Huang, Haiqing Li
Based on photodiode array sensors, a new parameter measurement system of gas-liquid Taylor flow in small channels is developed with cross-correlation technique and support vector regression technique. In this system, the laser signals are obtained by two photodiode array sensors. Combined with the cross-correlation technique, the velocity of bubble is determined by the signals of the two sensors. Further, a void fraction model is developed by support vector regression technique with the signals obtained by one sensor, and then the void fraction measurement is implemented. Experiments are carried out in small channel with the inner diameter of 4.04mm. The experimental results show that the developed measurement system of Taylor flow in small channels is successful and effective. The maximum relative difference of the velocity measurement is less than 5% and the maximum relative difference of the void fraction measurement is less than 10%.
{"title":"Parameter measurement system of Taylor flow in small channels based on photodiode array sensors","authors":"Huajun Li, H. Ji, C. Fu, Baoliang Wang, Zhiyao Huang, Haiqing Li","doi":"10.1109/I2MTC.2015.7151390","DOIUrl":"https://doi.org/10.1109/I2MTC.2015.7151390","url":null,"abstract":"Based on photodiode array sensors, a new parameter measurement system of gas-liquid Taylor flow in small channels is developed with cross-correlation technique and support vector regression technique. In this system, the laser signals are obtained by two photodiode array sensors. Combined with the cross-correlation technique, the velocity of bubble is determined by the signals of the two sensors. Further, a void fraction model is developed by support vector regression technique with the signals obtained by one sensor, and then the void fraction measurement is implemented. Experiments are carried out in small channel with the inner diameter of 4.04mm. The experimental results show that the developed measurement system of Taylor flow in small channels is successful and effective. The maximum relative difference of the velocity measurement is less than 5% and the maximum relative difference of the void fraction measurement is less than 10%.","PeriodicalId":424006,"journal":{"name":"2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125025714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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