Rotary direct-current electric field sensor automatic calibration system

Abstract

The invention provides a rotary direct-current (DC) electric field sensor automatic calibration system. The system comprises an industrial personal computer, a programmable DC power supply, an electric field generation device, and a data acquisition card. The output end of the industrial personal computer is connected with the programmable DC power supply, and the industrial personal computer is used for controlling the output voltage of the programmable DC power supply. The output end of the programmable DC power supply is connected with the electric field generation device, and the programmable DC power supply is used for providing voltage for the electric field generation device. A rotary DC electric field sensor is fixed on the electric field generation device, and the electric field generation device is used for providing a uniform electric field for the rotary DC electric field sensor. The input end of the data acquisition card is connected with the output end of the rotary DC electric field sensor, the output end of the data acquisition card is connected with the industrial personal computer, and the the data acquisition card is used for transferring the output signals of the rotary DC electric field sensor to the industrial personal computer. Through the technical field provided by the invention, automatic calibration of the rotary DC electric field sensor is realized, the efficiency of rotary electric field sensor calibration is improved greatly, the time for calibration is shortened, and the calibration precision is improved.

Description

technical field [0001] The invention relates to a calibration system, in particular to an automatic calibration system for a rotary direct current electric field sensor. Background technique [0002] With the vigorous development of UHV transmission projects, the electromagnetic environment around transmission lines has attracted increasing attention. Under the increasingly stringent environmental protection situation, the electromagnetic environment of transmission lines will become one of the important factors affecting its application and development, and it is a major technical issue that must be considered in line design and operation. The electric field strength is an important parameter of the electromagnetic environment, and the rotating DC electric field sensor is widely used in the measurement of the electric field strength. [0003] The electric field sensor needs to be calibrated before use. The traditional calibration method is manually operated by the calibrat...

AI Technical Summary

Problems solved by technology

[0004] First, the operation repeatability is high and the efficiency is low: because the calibration personnel manually change the voltage, the efficiency is low, and the workload is large when the number of electric field sensors is large;

[0005] Second, the error is large: the voltage level of the electric field generating device and the output signal of the electric field sensor are manual readings and recorded data, which will inevitably introduce errors

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