Atmospheric electric field calibration system with high precision and wide range

Abstract

The invention relates to an atmospheric electric field calibration system with high precision and wide range. The atmospheric electric field calibration system comprises an electric field generator (21), a direct-current high-voltage power supply (22), a direct-current middle-voltage power supply (23), a direct-current low-voltage power supply (24), a high precision high-voltage ammeter (25), a digital ammeter (26), a high precision digital ammeter (27), a data acquisition card (28), an equal precision universal counter (29), a universal oscilloscope (210), a universal computer and data processing module (211), a super isolating transformer (213), an independent specific grounding wire (214) and the like; the atmospheric electric field calibration system is characterized in that the most important equipment of the atmospheric electric field calibration system with high precision and wide range is the simulation electric field generator (21), and the ratio of the diameters to the distance of high and low level plates is not less than 3. The total design error of the electric field calibration system provided by the invention is 1%; and the electric field calibration range is 0-100kV/m, the precision is high, the range is wide, and the interference resistance is strong.

Description

technical field [0001] The invention relates to a calibration system for measuring the performance of measuring instruments, in particular to a high-precision and wide-range atmospheric electric field calibration system used as the industry standard of the meteorological department. Background technique [0002] Atmospheric electric field is one of the main characteristic parameters in the formation process of thunderstorms, hail, sandstorms and earthquakes. Electric field measurement is an important means to ensure the safe launch of spacecraft, weather forecast, and research on space environment, space physics and space weather. For a long time, the detection and research of electric field has attracted the attention of multidisciplinary scientific and technological personnel. [0003] Internationally, electric field measuring instruments are widely used in scientific measurement, monitoring of electrostatic environment near high-voltage DC power transmission lines, safety...

AI Technical Summary

Problems solved by technology

However, due to the limitation of technical conditions at that time, the error was relatively large, about 9%, which could not meet the increasing requirements of electric field measurement. The operation and data recording during calibration were completely manual, and the authenticity of the data was difficult to avoid human factors. influences

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