3D electric capacitance tomography sensor

A tomography, three-dimensional capacitance technology, applied in the field of sensors, can solve the problems of irregular measurement area, difficult information extraction, asymmetric spiral electrode structure, etc., and achieve the effect of accurate measurement results, easy and effective extraction, and simple layout.

Active Publication Date: 2017-02-01
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0007] (1) The structure of the spiral electrode is asymmetrical, and the distribution of the sensitive field is uneven, so it is impossible to accurately image the material distribution;
[0008] (2) The layout of the upper and lower end shields is unreasonable, and the measurement area is irregular, making it difficult to extract the information in the measurement area, and it is impossible to effectively measure the process parameters

Method used

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Embodiment Construction

[0030] 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. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.

[0031] In the present invention, the terms "disposed on", "arranged on" and "covered on" include contact and non-contact with a single or multiple components. For example, "the measuring electrode arranged on the pipe wall" may be arranged on the pipe wall in direct contact with the measuring electrode, or by arranging the inner lining of the pipe wall, and then ...

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Abstract

The invention discloses a 3D electric capacitance tomography sensor. The 3D electric capacitance tomography sensor is used for fluid parameter measurement. The 3D electric capacitance tomography sensor comprises radical electrodes which are arranged on a pipe wall for fluid flowing, extend along a pipe axial direction and are arranged at equal intervals, a measuring electrode array which comprises multiple measuring electrodes which are arranged on the pipe wall at intervals, form multiple helical structures, are arranged in the intervals formed by the radical electrodes and are uniformly distributed on the pipe wall along a radial direction and an axial direction, and a shielding cover which electrically isolatedly covers the outer wall of the pipe.

Description

technical field [0001] The invention relates to a sensor, in particular to a three-dimensional capacitance tomography sensor. Background technique [0002] Electrical Capacitance Tomography (ECT) technology is a process tomography technology, which can reflect the change of the dielectric constant of the material in the measured area. Based on this principle, ECT is commonly used to measure the distribution of multiphase substances with two or more dielectric constants. [0003] The ECT sensor usually arranges a series of electrodes on the outer wall of the pipeline. By measuring the capacitance value between all electrode pairs, and then using a certain image reconstruction algorithm, the dielectric constant distribution of the material in the pipeline can be obtained. Depending on the measured process, the distribution image of the dielectric constant can reflect physical quantities such as concentration, humidity, and temperature, so it can be used in different fields su...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/22
CPCG01N27/22
Inventor 叶佳敏王海刚吴蒙
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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