Verification method for remotely controlling non-contact electrostatic voltmeter

Abstract

The invention provides a verification method for a remote control non-contact electrostatic voltmeter. The method comprises the steps of establishing a verification device, initializing the verification device, verifying an electrostatic voltage indicating value error, testing short-term stability of a voltage indicating value, closing the verification device and fully discharging, and recording metering performance. Wherein an electric field shielding box is introduced in the calibration device, the calibration device initialization and the electrostatic voltage indication error calibration, the zero setting environment of the non-contact electrostatic voltmeter is carried out in the electric field shielding box, and meanwhile, an aluminum anti-electrostatic base plate is fully grounded, so that the whole calibration process is free from the interference of an electromagnetic environment and accumulated charges; and high accuracy of the verification process of the non-contact electrostatic voltmeter is ensured. The calibration result is good in repeatability and high in accuracy, the measurement range and the measurement capacity of high-voltage parameters are greatly improved, and the technical means of remote control, static prevention and electric field interference resistance of calibration of the non-contact electrostatic voltmeter are perfected.

Description

technical field [0001] The invention belongs to the field of measurement of physical quantities, in particular to a method for calibrating a remote control non-contact electrostatic voltmeter. Background technique [0002] In many flammable and explosive high-risk environments, static electricity may lead to major safety accidents such as fire, explosion, electric shock, etc., endangering life and property safety. Therefore, it is necessary to measure the static electricity of objects to prevent the energy of electrostatic discharge from being too large to cause safety accidents, especially in dry, explosive, and moving objects, the static electricity must be accurately measured and monitored at any time. [0003] Because the non-contact electrostatic voltmeter can measure the instantaneous value of the electrostatic voltage of metal bodies and insulators without touching the object to be measured, and has little influence on the object to be measured, it is widely used in e...

AI Technical Summary

Problems solved by technology

However, due to the high sensitivity of this type of electrostatic voltmeter, the existing non-contact electrostatic voltmeter verification method cannot meet the accuracy and uncertainty of the verification

The inventor finds through analysis that the current verification method mainly has the following deficiencies: (1) The zero point of the non-contact electrostatic voltmeter is not a true zero potential point, and the large interference of the environmental electric field leads to a large verification error

(2) The impact of static electricity on the work surface and personnel's own static electricity on the measurement leads to inaccurate measurement results and poor repeatability

When there are many objects to be tested and the time is long, the change in the measured display value will be greater

In addition, the existing verification method, the safety distance between the high voltage and the measuring personnel is not enough, and the safety hazard is great.

The non-contact electrostatic voltmeter needs to be cleared before each measurement. The existing domestic devices are all manually cleared, and some distance adjustment devices are hand-operated. These make it impossible to completely isolate the high voltage from the measuring personnel. personnel pose a security risk

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