Dissertation > Excellent graduate degree dissertation topics show

Capacitance Tomography direct three-dimensional image reconstruction technology research

Author: QiangDaZhuang
Tutor: YanHua
School: Shenyang University of Technology
Course: Detection Technology and Automation
Keywords: Capacitance Tomography Direct three-dimensional Finite Element Simulation Sensor Image reconstruction algorithm
CLC: TP391.41
Type: Master's thesis
Year: 2012
Downloads: 47
Quote: 1
Read: Download Dissertation

Abstract


Capacitance tomography (Electrical Capacitance Tomography, abbreviated ECT) technology is based on the measurement capacitance to obtain the distribution of the dielectric permittivity of a non-invasive imaging techniques . It is placed in a test using the pipe , a sensor array around the container , access to the non-conductive object field measured at different observation angles of projection data, i.e., capacitance measurements , using the appropriate algorithm for image reconstruction , the reconstruction of the medium measured object field ( permittivity ) distribution . This technique has a low cost , fast response , easy to implement , non-invasive measurement , good safety performance , wide application , etc., it has broad application prospects . Direct three-dimensional ECT technologies requires the measurement of the test pipe layers arranged on the plate , not only measured on the same layer capacitance between plates , but also to measure the different layers of the plate capacitance between pairs of three-dimensional images directly in the image reconstruction process produced , without this there is an error -dimensional tomographic imaging of the intermediate links , get higher-quality three-dimensional reconstruction images. Has great research value. In this paper, the finite element simulation software , a great deal simulation. ECT sensor from the direct three-dimensional image reconstruction algorithm research and the two aspects of electrical capacitance tomography direct three-dimensional image reconstruction techniques are studied . This paper presents four axial points , four on each plate , the angle of rotation between adjacent layers , respectively, 0 ° and 45 ° are both 16 ECT sensor plate dimensional structure directly . From the air-filled tube of capacitance values ??, sensitivity analysis and other aspects of reconstruction quality compared to determine the optimum structure of the sensor . In addition , the authors propose a multiple linear regression method is the problem model, using an improved Landweber iterative algorithm for solving the inverse problem of the direct three-dimensional image reconstruction algorithm for ECT . And with the LBP algorithm , Landweber iterative algorithm were compared . The results showed that multiple linear regression method of ECT forward problem model modeling matrix morbid smaller, the quality of the new algorithm is better than LBP reconstruction algorithms and Landweber iterative algorithm .

Related Dissertations

  1. Research on Magnetic Field Sensor Based on GMI Effect and Geomagnetic Matching Algorithm,P318
  2. Soft Sensor of Naphtha Dry Point on Support Vector Machines Regression,TE622.1
  3. Research on the Integrated Grating Subdividing Digital Display Device Based on DSP,TH822
  4. High Speed Frequency Measurment and Non-Linearity Correction of Frequency Modulated Capacitive Displacement Sensor,TH822
  5. Research on Temperature Measurement Technique Based on CCD Image Sensor,TH811
  6. The Research of Navigation Multi-Sensor Data Fusion Technology Based on Micro Unmanned Platform,V249.32
  7. Research on the Image Acquisition System Based on CMOS Star Sensor,V448.2
  8. Research on Temprature Controling Technology of Laser Diode with Thermoelectric Cooler,TN248.4
  9. Design and Implement of Multi-Port Network Communication Platform,TN929.5
  10. Research on Intelligent Learning-Based Multi-Sensor Target Recognition and Tracking System,TP391.41
  11. Research on Joint Target Detection for Dual-Sensor Image and System Implementation,TP391.41
  12. Research on Spaceborne Hyperspectral Sensor Simulation,TP391.9
  13. Development of Experimental Robot Control System Based on ARM,TP242.6
  14. Gradual Event Detection in Sensor Networks,TP212.9
  15. Development of Inductance Sensor Data Acquisition System Based on FPGA,TP274.2
  16. Data Aggregation Scheduling Algorithms in Wireless Sensor Networks,TP212.9
  17. Multi-Sensor Information Fusion and Its Applications on Wearable Computer,TP202
  18. Research on Target Tracking and System in Wireless Sensor Networks Based on Character of Movement and Terrain Restriction,TP212.9
  19. Technology for Localization Attack Detection in Wireless Sensor Networks,TP212.9
  20. Multiple Pairwise Keys Management Protocol of Function Node-Based for Wireless Sensor Networks,TP212.9
  21. A Mobile Health Monitoring System for the Elderly,TN929.5

CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
© 2012 www.DissertationTopic.Net  Mobile