Improved calibrating system and method of electrostatic field meter

Abstract

The invention provides an improved calibrating system and method of an electrostatic field meter. The improved calibrating system of the electrostatic field meter comprises a direct current high voltage power supply, a selective switch, a direct current high voltage power supply controller, a pair of metal parallel pole plates, an electric field meter fixture, an electric field homogeneity evaluating device, a laser range finder and a camera shooting monitoring device, wherein the pair of metal parallel pole plates is composed of upper and lower pole plates parallel to each other, and a bracket is arranged between the upper and lower pole plates; and an open hole used as a calibrating area is formed in the central position of the lower pole plates, and the electric field meter fixture forfixing an electric field meter probe to be calibrated is arranged at the position of the open hole in an embedded mode. The camera shooting monitoring device is used for collecting electric field intensity displayed by an electric field meter to be calibrated, the electric field intensity is compared with the electric field intensity of a standard electric field obtained by calculating the distance of the surfaces of the upper and lower pole plate obtained by the laser range finder and output voltage of the direct current high voltage power supply, and calibrating is carried out according to compared results. According to the improved calibrating system and method of the electrostatic field meter, the calibrating range and precision are improved, the calibrating requirements of electrostatic field meters with different models can be met, and high practicability is achieved.

Description

technical field [0001] The invention belongs to the technical field of electromechanical integration instruments and meters, and relates to an improved electrostatic field meter calibration system and method. Background technique [0002] Electric field meters play a pivotal role in many fields. For example, electrostatic field meters are used in flammable and explosive closed places to detect human static electricity and potential static electricity hidden dangers caused by lightning weather; Xichang Satellite Launch Site is equipped with 16 ground The electric field meter measuring point, and the double-ball electric field meter carried by the balloon measures the electric field strength in the air, which is used for satellite launch guarantee; the monitoring of the electric field is indispensable for understanding the space electric state, and can be used for static monitoring in closed places, solar activity for near-Earth The impact of space weather, thunderstorm and ea...

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Problems solved by technology

[0005] The problem to be solved by the invention is that the large area of ​​parallel plates in the prior art will easily lead to an increase in the degree of non-parallelism between the plates, and the existence of a gap or non-parallel between the electric field meter probe and the lower plate will cause distortion of the electric field. It cannot be effectively adapted to various electric field meters, which brings about errors in calibration, so as to solve the problems of parallelism design of parallel plate electric field calibration device and elimination of electric field distortion of inserts

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