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Image Reconstruction of Capacitively Coupled Electrical Resistance Tomography Based on An Improved Kalman Filter Model
Yimin Wu;Yandan Jiang;Haifeng Ji;Baoliang Wang;Manuchehr Soleimani
By developing an improved Kalman filter (KF) model, a new imaging method of capacitively coupled electrical resistance tomography (CCERT) is proposed for monitoring multiphase flows. In the improved KF model, the innovative idea of state evolution learning is proposed to learn the spatiotemporal correlations between the fluid states, and the level-based state representation is integrated to reduce...Show More
Tomographic Object Detection by Unsupervised Clustering
Fengyuan Wang;Zheng Wang;Yimin Wu;Yandan Jiang;Haifeng Ji;Baoliang Wang
2024 2nd International Conference on Computer, Vision and Intelligent Technology (ICCVIT)
Year: 2024 | Conference Paper |
This work introduces clustering to electrical tomography (ET) and first compares the effectiveness of different unsupervised clustering categories in tomographic object detection. First, the one-step linear back projection (LBP) algorithm is applied to reconstruct a rough image. Then, clustering is introduced to detect and refine the objects in the image, and a higher-quality image is obtained bas...Show More
A Wideband Contactless Electrical Impedance Tomography System
Huaiyin Zhu;Baoliang Wang;Manuchehr Soleimani;Haifeng Ji;Yandan Jiang
This work focuses on the development of a wideband contactless electrical impedance tomography (EIT) system. The system is developed from the aspects of the multifrequency capacitively coupled electrical impedance tomography (CCEIT) hardware, the impedance calculation model, and the system evaluation. The hardware includes a 12-electrode CCEIT sensor, six sensing modules, a data acquisition module...Show More
A Joint Image Reconstruction Method for Capacitively Coupled Electrical Impedance Tomography
Capacitively coupled electrical impedance tomography (CCEIT) is a contactless improvement of electrical resistance tomography (ERT) that uses both the real and imaginary parts of the impedance. To make better use of the two parts, a novel joint image reconstruction method with structural grouping guidance for CCEIT is proposed in this work. The method presents a fusion-while-reconstruction approac...Show More
A New CCERT System With Shielding for Gas-Liquid Two-Phase Flow
Xintong Fang;Yandan Jiang;Haifeng Ji;Baoliang Wang;Zhiyao Huang
This article presents a new capacitively coupled electrical resistance tomography (CCERT) system with shielding for gas-liquid two-phase flow. The new system is developed from the aspects of hardware, image reconstruction algorithm and experiments. The hardware includes a 12-electrode CCERT sensor with shielding, a measurement circuit and an image reconstruction computer. The sensor with shielding...Show More
A new flow pattern identification method based on the optical flow algorithm for gas–liquid two-phase flow in small channels is presented. In this method, an improved optical flow algorithm, the optical flow algorithm based on curvature domain descriptor, is proposed to overcome the influence of uneven illumination. Then, the characteristic of the optical flow field is analyzed, and two features o...Show More
A new analytical method for 3-D target localization based on a four-element ultrasonic sensor array is proposed. In the sensor array, with the consideration of good real-time performance, one ultrasonic sensor (the reference ultrasonic sensor) works both as a transmitter and as a receiver, while the other three sensors work as receivers. A basic target localization model is developed. The necessar...Show More
A Grid-Based Density Peaks Clustering Algorithm
This article focuses on the improvement of density peaks clustering (DPC, also known as clustering by fast search and find of density peaks) by the introduction of the grid clustering. A grid division is used to divide the data space into grid cells. The global characteristic of grid cell replaces the characteristic of the data points. The local density of DPC is replaced by the density of the gri...Show More
A New Electrical Resistance Measurement Method of Carbon Fiber-Reinforced Polymer Tubes Based on C⁴D Technique
Pinghao Liang;Yandan Jiang;Haifeng Ji;Baoliang Wang;Zhiyao Huang
This work introduces the capacitively coupled contactless conductivity detection ( \text{C}^{{4}}\text{D} ) technique into nondestructive testing (NDT) of carbon fiber-reinforced polymer (CFRP) and proposes a new resistance measurement method of CFRP tubes. The proposed method does not require direct contact between the electrodes and the carbon fiber. Therefore, the electrical resistance of CFR...Show More
A Two-Stream Deep Imaging Method for Multifrequency Capacitively Coupled Electrical Resistance Tomography
Chunfen Luo;Liying Zhu;Yandan Jiang;Maomao Zhang;Haifeng Ji;Baoliang Wang;Zhiyao Huang
In this work, a novel deep imaging method is proposed for multifrequency capacitively coupled electrical resistance tomography (MFCCERT). A two-stream network consisting of a low-frequency stream and a high-frequency stream is developed according to the frequency characteristics of the interested impedance. Meanwhile, a cross-stream information intersection approach, which combines hyper-dense con...Show More
A New Image Reconstruction Algorithm for CCERT Based on Improved DPC and K-Means
Zheng Wang;Yandan Jiang;Junchao Huang;Baoliang Wang;Haifeng Ji;Zhiyao Huang
Based on density peaks clustering (DPC) and K-means, this work aims to propose a new image reconstruction algorithm for capacitively coupled electrical resistance tomography (CCERT). To better apply DPC and K-means to CCERT, DPC is improved by automatically selecting the cluster centers and K-means is improved by introducing a post-processing in consider of the non-uniform sensitivity characterist...Show More
A New Online Monitoring Method for Water-in-Oil Droplet Based Microfluidic Devices
Yuchen He;Yu He;Yandan Jiang;Tao Zhang;Haifeng Ji;Baoliang Wang;Zhiyao Huang;Manuchehr Soleimani
The online water-in-oil (w/o) droplet monitoring is essential for the uniformity of the droplet based microfluidic devices. In this work, a contactless impedance detection (CID) method for online w/o droplet monitoring in microfluidic devices is proposed. In the proposed method, a new CID sensor, which can work at low working frequency and overcome the unfavorable influence of coupling capacitance...Show More
An Analytical Method for 3-D Sound Source Localization Based on a Five-Element Microphone Array
Yizhen Qiu;Bohan Li;Junchao Huang;Yandan Jiang;Baoliang Wang;Zhiyao Huang
An analytical method for 3-D sound source localization based on a five-element microphone array is proposed in this work. With four time-difference-of-arrival (TDOA) values, the proposed method realizes the sound source localization by analytical solution. A new five-element microphone array configuration (which is characterized in that four microphones are in the same plane and at four vertices o...Show More
Study on Dual-Frequency Imaging of Capacitively Coupled Electrical Impedance Tomography: Frequency Optimization
Yandan Jiang;Junchao Huang;Haifeng Ji;Baoliang Wang;Zhiyao Huang;Manuchehr Soleimani
In this work, a new dual-frequency imaging framework of capacitively coupled electrical impedance tomography (CCEIT) is presented. Unlike conventional single-frequency imaging and recently emerged multifrequency imaging, the dual-frequency imaging adopts two different working frequencies to obtain the real part and the imaginary part of the impedance, respectively. With the real part image and the...Show More
An Image Reconstruction Algorithm for a 12-Electrode Capacitively Coupled Electrical Resistance Tomography System Under 2-Electrode Excitation Strategy
Zhen Xu;Junchao Huang;Yandan Jiang;Baoliang Wang;Zhiyao Huang;Manuchehr Soleimani
An image reconstruction algorithm, which is developed for a 12-electrode capacitively coupled electrical resistance tomography (CCERT) system under 2-electrode excitation strategy, is proposed. Based on L-curve and Reginska’s method, truncated singular value decomposition (TSVD) is used to reconstruct the initial image. The algebraic reconstruction technique (ART) algorithm is used to obtain the f...Show More
An Image Reconstruction Method of Capacitively Coupled Electrical Impedance Tomography (CCEIT) Based on DBSCAN and Image Fusion
Xuekai He;Yandan Jiang;Baoliang Wang;Haifeng Ji;Zhiyao Huang
Based on linear back projection (LBP) algorithm, density-based spatial clustering of applications with noise (DBSCAN) algorithm and image fusion technique, a new image reconstruction method of capacitively coupled electrical impedance tomography (CCEIT) is proposed in this work. LBP is used to obtain the original image of the real part and the original image of the imaginary part. The gray level t...Show More
New Contactless Conductivity Detection (CCD) Sensor for Fluid Conductivity Measurement
Xiao-Yu Tang;Junchao Huang;Haifeng Ji;Baoliang Wang;Zhiyao Huang
A new contactless conductivity detection (CCD) sensor, which is on the basis of the capacitive reactance elimination principle, is developed in this work. The CCD sensor has two AC paths, the detection path and the compensation path. The unfavorable capacitive reactance produced by the coupling capacitances in the detection path is cancelled out by the capacitive reactance produced by an introduce...Show More
A New Contactless Bubble/Slug Velocity Measurement Method of Gas–Liquid Two-Phase Flow in Small Channels
Junchao Huang;Bixia Sheng;Haifeng Ji;Zhiyao Huang;Baoliang Wang;Haiqing Li
A new contactless bubble/slug velocity measurement method of the gas-liquid two-phase flow in small channels is proposed by extending the contactless conductivity detection technique to the contactless impedance detection (CID) technique. Two kinds of CID sensors with different constructions (tubular construction and radial construction) are developed to obtain the total impedance information (the...Show More
Image Reconstruction Performance of a 12-Electrode CCERT Sensor Under Five Different Excitation Patterns
Zhen Xu;Yandan Jiang;Baoliang Wang;Zhiyao Huang;Haifeng Ji;Haiqing Li
To obtain useful knowledge and experience of CCERT under different excitation patterns, the image reconstruction performance of a 12-electrode CCERT sensor under five different excitation patterns (1-electrode excitation pattern, 2-electrode excitation pattern, 3-electrode excitation pattern, 4-electrode excitation pattern, and 5-electrode excitation pattern) are investigated and compared. A 12-el...Show More
A Model-Based Hybrid Ultrasonic Gas Flowmeter
Yandan Jiang;Baoliang Wang;Xia Li;Dandan Liu;Yueqin Wang;Zhiyao Huang
Combining the transmission “Z” mode and the reflection “V” mode, a new hybrid dual-path ultrasonic sensor is designed to make full use of the advantages of the two modes. With the hybrid sensor and a new model-based time-of-flight (TOF) measurement method, a new model-based hybrid ultrasonic gas flowmeter is developed. The model-based TOF measurement method, which includes a signal filtering part ...Show More
Research on CCERT under two different excitation patterns
Yandan Jiang;Zhen Xu;Baoliang Wang;Zhiyao Huang;Haifeng Ji;Haiqing Li
2017 IEEE International Conference on Imaging Systems and Techniques (IST)
Year: 2017 | Conference Paper |
Cited by: Papers (1)
In this work, the sensitivity distributions and the image reconstruction of a 12-electrode CCERT system under two different excitation patterns, the conventional one-electrode excitation pattern and the new proposed three-electrode excitation pattern, are studied. Simulation results show that the sensitivity distribution of CCERT under the three-electrode excitation pattern has better uniformity a...Show More
Development of a test system for Lamb wave gas sensor
Yangyang Huang;Baoliang Wang;Haifeng Ji;Zhiyao Huang;Haiqing Li
2017 Chinese Automation Congress (CAC)
Year: 2017 | Conference Paper |
Lamb wave gas sensor has broad industrial application prospects in gas sensing due to its multi-mode characteristic. Lamb wave gas sensor is now still in fundamental academic research period and its performance remains to be determined and verified experimentally. However, there is a lack of test system that can fully meet the test requirements of Lamb wave gas sensor. In this paper, a test system...Show More
Application of convolution neural network to flow pattern identification of gas-liquid two-phase flow in small-size pipe
Zhiyong Yang;Haifeng Ji;Zhiyao Huang;Baoliang Wang;Haiqing Li
Flow pattern is one of the most important parameters for gas-liquid two-phase flow. In this work, a new flow pattern identification method based on Convolution Neural Network (CNN) is presented. A 7-layer CNN structure is chosen, and the parameters of this network are determined by a training set. In order to verify the feasibility, experiments were carried out in horizontal pipe with the inner di...Show More
A novel lateral resistivity logging-while-drilling (LWD) method in oil-based drilling fluid
Junyi Lu;Baoliang Wang;Haifeng Ji;Xin Li;Weining Ni;Wei Zhang;Zhiyao Huang;Haiqing Li
Well logging technology is of great significance to oil production. A new lateral resistivity logging-while-drilling (LWD) method applied in oil-based drilling fluid condition is proposed in this paper by combining capacitive coupling with inductive coupling principle. By using a new logging model, the ineffectiveness of the conventional resistivity LWD methods in oil-based drilling fluid is overc...Show More
Sensitivity Distribution of CCERT Sensor Under Different Excitation Patterns
Zhen Xu;Yandan Jiang;Baoliang Wang;Zhiyao Huang;Haifeng Ji;Haiqing Li
This paper focuses on the study of sensitivity distribution of the capacitively coupled electrical resistance tomography (CCERT) and the influences of excitation patterns on sensitivity distributions. The sensitivity distributions of a 12-electrode CCERT sensor under three excitation patterns (the one-electrode excitation pattern, the three-electrode excitation pattern, and the five-electrode exci...Show More
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