Microwave-imaging-fused electrical capacitance tomography method and device

A technology of electrical capacitance tomography and microwave imaging, which is applied in the direction of material capacitance, etc., can solve the problems of large distribution differences, increased iteration times, and slow convergence speed, so as to improve imaging speed, avoid local extreme values, and reduce iteration times. Effect

Inactive Publication Date: 2017-07-11
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the initial value of the conventional iterative algorithm is set to a zero vector, the initial value and the distribution of the real permittivity are quite different, which will lead to slow convergence (increase in the number of iterations) or even no convergence (falling into a local extremum)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Microwave-imaging-fused electrical capacitance tomography method and device
  • Microwave-imaging-fused electrical capacitance tomography method and device
  • Microwave-imaging-fused electrical capacitance tomography method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0039] figure 1 is a schematic diagram of the conventional electrical capacitance tomography method. figure 1 As shown in , when performing an iterative algorithm, the initial value is generally set to a zero vector, which usually leads to a long iteration time and results in non-convergent iterations.

[0040] figure 2 It is a process diagram of the electrical capacitance tomography method for fused microwave imaging according to the embodiment of the invention. The imaging method of the embodiment of the present invention comprises steps:

[0041] S1: Collect capacitance data and microwave imaging data measured in the area to be imaged;

[0042] S2: According to the iterative algorithm of image reconstruction and t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a microwave-imaging-fused electrical capacitance tomography method including acquisition of electrical capacitance data and microwave imaging data measured in a to-be-imaged area; acquisition of dielectric constant distribution of a measured material in the to-be-imaged area according to image reconstruction iterative algorithm and the electrical capacitance data, wherein the dielectric constant distribution of microwave imaging data conversion in the iterative algorithm can be used as an initial iteration value. Iteration times can be reduced by the iterative algorithm, and imaging speed is improved, so that the iterative algorithm can be actually applied in circulating fluidized bed, coating and other processes, a more accurate gas solid concentration distribution image can be obtained, and the process can be more effectively monitored.

Description

technical field [0001] The invention relates to the field of electrical capacitance tomography, in particular to an electrical capacitance tomography method for fusing microwave tomography information, and a device for realizing the imaging method. Background technique [0002] Complex gas-solid flow systems widely exist in energy, pharmaceuticals, food processing, and other chemical industries, such as gas-solid flow in circulating fluidized bed risers and feeders, coating, granulation, and drying processes in the pharmaceutical industry. Real-time monitoring of complex gas-solid flow systems is of great significance to safe production and process optimization. Electrical Capacitance Tomography (ECT) is a real-time visual electrical tomography technology, which can obtain the gas-solid two-phase accumulation information of the cross-section of the area to be imaged, and can realize The real-time monitoring of gas-solid concentration in the flow process is widely used in th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N27/22
Inventor 叶佳敏吴蒙王海刚
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap