Method and device for measuring electric field intensity in strong electric field

Abstract

The invention relates to the technical field of electric field intensity measurement, and particularly provides a method and a device for measuring the electric field intensity in a strong electric field. Firstly, the electric field is closed, tentative point charges are balanced at spatial positions in need of electric field intensity measurement in the electric field through at least three tensometers, and the initial tension values of the multiple tensometers are recorded respectively; then, the electric field is started again, the tension sizes of the tensometers are adjusted to enable the tentative point charges to be in a balanced state again in the original positions, and the real-time tension values of the multiple tensometers are recorded respectively; the difference between the real-time tension value and the initial tension value of each tensometer is calculated, the tension difference is obtained, the joint force of multiple tension differences is then calculated, the electric field force F at the measured spatial position is obtained, and the electric field intensity of the measured spatial position is calculated according to the electric field force F. Thus, the high-precision electric field intensity in the strong electric field is acquired.

Description

technical field [0001] The invention relates to the technical field of electric field strength measurement, in particular to a method and device for measuring electric field strength in a strong electric field. Background technique [0002] Electric field strength is a physical quantity used to represent the strength and direction of an electric field. At a certain point in the electric field, the ratio of the electric field force on the test point charge (positive charge) to the charge it carries is an amount that has nothing to do with the test point charge. Therefore, the direction of the electric field force on the test point charge (positive charge) at the point is taken as the direction of the electric field, and the vector with the aforementioned ratio as the magnitude is defined as the electric field intensity at the point, which is often expressed by E. According to the definition, the direction of the electric field intensity at a certain point in the electric fie...

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Problems solved by technology

[0003] Conventional electric field strength measurements are all done through antennas. Due to the limitation of antenna size, accurate electric field strengths at various positions in space cannot be obtained, which cannot meet the test requirements for high-precision field strength distribution in strong electric fields.

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