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High-voltage static voltage measurement device

A technology of voltage measurement and high-voltage static electricity, which is applied in the direction of measuring devices, measuring current/voltage, measuring electrical variables, etc., can solve problems such as charge leakage, achieve low leakage current, ensure accuracy, and high stability

Active Publication Date: 2014-12-24
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to propose a high-voltage electrostatic voltage measuring device, which can solve the problem of charge leakage in the process of measuring high-voltage electrostatic voltage

Method used

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with accompanying drawings and specific embodiments

[0029] Such as figure 1 As shown, the high-voltage electrostatic voltage measuring device of the present invention includes an induction plate, a voltage dividing capacitor and a measuring circuit; wherein the output of the induction plate is divided into two branches, one of which is grounded through the voltage dividing capacitor, and the other branch is connected to the ground through the voltage dividing capacitor. The measuring circuit is connected;

[0030] The induction plate is used to sense the electrostatic voltage of the measured object;

[0031] The voltage dividing capacitor is used to divide the electrostatic voltage output by the induction plate;

[0032] The measurement circuit includes a low-bias input amplifier, a non-inverting proportional amplifier, a low-pass filter, a measurement display module, an equipotential shield ring...

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Abstract

The invention provides a high-voltage static voltage measurement device which comprises an induction pole plate, a partial voltage capacitor and a measuring circuit. The output of the induction pole plate is divided into two branch circuits, one branch circuit is grounded through the partial voltage capacitor, and the other branch circuit is connected with the measuring circuit; the measuring circuit comprises a low-bias input amplifier, an in-phase proportional amplifier, a low-pass filter, a measurement display module, an equipotential shielding ring, a follower amplifier and a switch; an input pin on the low-bias input amplifier is surrounded by the equipotential shielding ring; each output branch circuit of the induction pole plate is connected with the low-bias input amplifier, the in-phase proportional amplifier, the low-pass filter and the measurement display module in sequence through the switch; the reverse input end of the low-bias input amplifier is connected with the input end of the follower amplifier, and the output end of the follower amplifier is connected with the equipotential shielding ring. The high-voltage static voltage measurement device can well solve the electric leakage problem of electric charges in the high-voltage static voltage measurement process.

Description

technical field [0001] The invention relates to a high-voltage electrostatic voltage measuring device, which is used for measuring the high-voltage electrostatic potential of a medium or a conductor. Background technique [0002] The measurement of high-voltage electrostatic potential of media or conductors is widely used in scientific research and engineering fields, especially in the study of satellite charging and discharging effects. This technology can effectively measure the electrostatic high-voltage potential of satellite materials and provide testing and research methods for satellite electrostatic protection design. [0003] At present, the measurement of high-voltage electrostatic voltage is basically non-contact, and it is mainly divided into two categories: one is to use a vibrating device to vibrate in the electric field formed by the electrostatic voltage to form a modulation signal whose amplitude is proportional to the strength of the electric field. The sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00G01R15/06
Inventor 周朝阳王鹢杨生胜田恺薛玉雄苗育君李存惠
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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