Calibrating device of three-dimensional electrostatic field meter

Abstract

The invention provides a calibrating device of a three-dimensional electrostatic field meter. The calibrating device comprises a direct current high voltage power supply, a protective resistance, direct current high voltage power supply controller, metal parallel pole plates, an electric field meter fixture, a three-dimensional rotating mechanism, a laser range finder, a camera shooting monitoringstructure and a electromagnetic shielding structure; the three-dimensional rotating mechanism comprises a fixed station, a universal driving shaft, a stepping motor, a rotary transformer, a central processing unit and a displacement sensor, wherein the central processing unit controls an output shaft of the stepping motor to rotate through the rotary transformer so as to drive the calibrated three-dimensional electric field meter to rotate in an open hole; and the camera shooting monitoring structure is used for collecting electric field intensity displayed by the calibrated three-dimensionalelectric field meter, the electric field intensity is compared with the electric field intensity of a standard electric field obtained by calculating the distance of upper and lower pole plates obtained by the laser range finder and output voltage of a direct current high voltage power supply, and calibrating is carried out according to compared results. The calibrating device of the three-dimensional electrostatic field meter can avoid external electromagnetic interference and influence of environmental temperature and humidity, and meet calibrating requirements of the three-dimensional electrostatic field meter, and thus, high practicability is achieved in the use of a metering calibrating mechanism.

Description

technical field [0001] The invention belongs to the technical field of electromechanical integration instruments and meters, and relates to a calibration device for a three-dimensional electrostatic field instrument. Background technique [0002] The traditional one-dimensional electrostatic field meter can only monitor one-dimensional or two-dimensional electric field strength, and the detection direction is generally parallel or perpendicular to the sensor’s main axis. May cause large measurement errors. The three-dimensional electric field sensor currently used for the electric field strength of the air and ground environment is suitable for the detection of the electrostatic field formed by a variety of irregular electrodes, and plays a pivotal role in many fields. The field instrument detects the hidden dangers of static electricity caused by human static electricity and lightning weather; Xichang Satellite Launch Site is equipped with 16 ground electric field instrume...

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Problems solved by technology

[0005] The problem to be solved by the invention is to solve the problem that the existing parallel plate capacitors are mainly used for the calibration of one-dimensional electrostatic field instruments, which cannot be calibrated for three-dimensional electrostatic field instruments, and the large area of ​​parallel plates will easily lead to an increase in the degree of non-parallelism between the plates. Problems that can have a huge impact on calibration results

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