System and method for surface charge dynamic distribution measurement in dielectric barrier discharge

A dielectric barrier discharge and surface charge technology, which is applied to measuring devices, measuring electrical variables, electrical components, etc., can solve the problems of the influence of the optical properties of the medium on the measurement accuracy, and achieve the effects of reducing interference, ensuring accuracy, and improving accuracy

Pending Publication Date: 2018-05-04
XI AN JIAOTONG UNIV
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Problems solved by technology

This method can only measure the surface charge distribution of transparent insulating films

Method used

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  • System and method for surface charge dynamic distribution measurement in dielectric barrier discharge
  • System and method for surface charge dynamic distribution measurement in dielectric barrier discharge
  • System and method for surface charge dynamic distribution measurement in dielectric barrier discharge

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] A measurement system for the dynamic distribution of surface charge in dielectric barrier discharge, including a plate electrode structure discharge unit, a He-Ne laser source, a beam amplifier, an aperture, a 1 / 8 wave plate, a polarizing beam splitter, a convex lens, a small hole, and a high-speed camera . The plate electrode structure discharge unit couples the BSO measurement unit and the electrode system together to realize dielectric barrier discharge and dynamic measurement of surface charge during the discharge process. The He-Ne laser source produces fixed wavelength linearly polarized light for surface charge measurements. The beam amplifier is fixed on the light outlet of the laser source through the interface of the laser source, and is used to amplify the diameter of the beam emitted by the laser source. The diaphragm is used to adjust th...

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Abstract

The invention discloses a system and method for surface charge dynamic distribution measurement in dielectric barrier discharge. The system includes a plane electrode structure discharge unit, a He-Nelaser source, a beam amplifier, an aperture, a 1/8 wave plate, a polarization beam splitter, a convex lens, a micropore and a high-speed camera. The plane electrode structure discharge unit includesa BSO measuring unit, a high voltage electrode, an insulating support and a ground electrode. The BSO measuring unit includes a BSO crystal, BK7 glass and an ITO transparent electrode. The BSO crystalis glued on the BK7 glass and the other side of the BK7 glass is coated with the ITO transparent electrode. The aperture, the polarization beam splitter and the 1/8 wave plate are fixed on an identical optical guide rail. According to the system and method for surface charge dynamic distribution measurement in dielectric barrier discharge, based on the Pockels effect, the dielectric surface charge dynamic distribution is achieved by recording the light intensity of reflected light carrying electric field information. The system has high measurement sensitivity and resolution and no requirement on the light transmission performance of a barrier material, and is helpful for deep research on the dielectric barrier discharge from the perspective of surface charge dynamic distribution.

Description

technical field [0001] The invention belongs to the field of dielectric barrier discharge and relates to a system and method for measuring the dynamic distribution of surface charges in dielectric barrier discharge. Background technique [0002] Dielectric barrier discharge refers to the phenomenon of non-equilibrium gas discharge in the discharge space after an insulating medium is inserted between the positive and negative electrodes. Dielectric barrier discharge can obtain low-temperature plasma at atmospheric pressure or higher than atmospheric pressure, and can obtain active particles required in the chemical reaction process at a lower temperature without vacuum equipment. At present, dielectric barrier discharge is widely used in the industrial field and is one of the research hotspots of gas discharge. [0003] Since the surface conductivity of the dielectric is very low, the charged particles generated by the dielectric barrier discharge will not disappear due to e...

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Application Information

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IPC IPC(8): G01R29/24H05H1/24
CPCH05H1/2406G01R29/24
Inventor 孟永鹏马鑫哲杜燕杨鑫吴锴成永红
Owner XI AN JIAOTONG UNIV
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