Gas electrostatic density measuring instrument and method

Abstract

The invention discloses a gas electrostatic density measuring instrument and a method. The gas electrostatic density measuring instrument comprises a charge induction sensor, a vibration capacitance sensor, a signal conditioning module and a control module. The main measuring principle is that through measuring a potential difference generated by charges in the gas on the outer wall and the inner wall of the charge induction sensor, the charge density of the charged gas is calculated. The charge density of a thunderstorm gas can be measured via the gas electrostatic density measuring instrument; due to the design of a dual-cylinder structure, influences of an external gas on measurement can be effectively avoided; the circuit is simple; stability is good; the measurement precision is high; the application prospect is good; and popularization is worthwhile.

Description

technical field [0001] The invention belongs to the technical field of space charge measurement, and in particular relates to a gas electrostatic density measuring instrument and method. The measuring instrument is an instrument suitable for measuring the charge density in gas (such as cumulonimbus and thunderstorm cloud). Background technique [0002] Under certain conditions, some gases will carry a certain amount of static electricity, such as thunderstorm clouds. Due to the potential difference between the thunderstorm cloud and the ground, it will discharge to the ground to form lightning, which will destroy buildings, damage equipment, and cause forest fires, threatening human life. Therefore, people have conducted a lot of research on lightning, including the reasons for the formation of lightning , lightning measurement, early warning, etc. The detection of charge and electric field in the atmosphere provides necessary tools for the exploration, research, and early ...

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Problems solved by technology

The detection of charge and electric field in the atmosphere provides necessary tools for the exploration, research, and early warning of the physical process of lightning occurrence and development, especially the detection of charge distribution in thunderstorm clouds. The analysis and research of electric field distribution and lightning discharge characteristics provide an important basis, but the existing electrostatic measuring instruments, atmospheric electric field measuring instruments, etc., can only measure the existence of charges qualitatively, and cannot measure accurately and quantitatively

[0003] The Chinese Patent Publication No. CN103091567A discloses an instrument and method for measuring space charge density. It adopts a single cylinder structure, which cannot effectively avoid the superposition effect of the electric field brought by the charged gas outside the cylinder, and the circuit is complex and the anti-interference ability is weak. , therefore, further research is required

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