Rectilinear vibration modulation minitype electrostatic field sensor

Abstract

The invention provides a rectilinear vibration modulation minitype electrostatic field sensor, which aims to solve the problem of mechanical abrasion of a field grinding type electric field instrument. The rectilinear vibration modulation minitype electrostatic field sensor comprises a shielding electrode, an induction electrode, a piezoelectric stack, a piezoelectric stack mounting plate, a position adjustment thread and a mounting base, wherein the shielding electrode is arranged on the mounting base and is grounded; the induction electrode is arranged parallel to the shielding electrode; the lower part of the induction electrode is connected with the piezoelectric stack; the piezoelectric stack is fixed on the piezoelectric stack mounting plate; the piezoelectric stack mounting plate is connected with the mounting base through the position adjustment thread; and a plurality of circular holes or a plurality of elongated slot-shaped slits are formed in the shielding electrode.

Description

Technical field: [0001] The invention relates to a linear vibration modulation miniature electrostatic field sensor, which belongs to the field of electricity, and specifically belongs to sensor technology and measurement of electrostatic field. Background technique: [0002] In industrial production, static electricity is harmful to a certain extent. Static electricity monitoring is an important task related to product quality and production safety. In terms of meteorology, the atmospheric electrostatic field is a key characteristic parameter for thunderstorm and lightning monitoring. Electrostatic monitoring in industries such as oil and mines is also an important task. At present, the monitoring of the electrostatic field mainly adopts the inductive electrostatic tester and the field grinding electrostatic tester. The inductive electrostatic tester uses the principle of electrostatic induction to induce the charge at a specified test distance for measurement, but this m...

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Problems solved by technology

At present, the monitoring of the electrostatic field mainly adopts the inductive electrostatic tester and the field grinding electrostatic tester. The inductive electrostatic tester uses the principle of electrostatic induction to induce the charge at a specified test distance for measurement, but this method requires a short distance (such as 25mm) to measure the potential or charge of a charged body, and there is charge leakage, and the induced charge decays with time, so that the measured value decreases with time; the field mill electric field meter is not limited by distance and has no charge leakage, but its drive motor Affects its long-term continuous work, unstable speed, mechanical wear, and large system power consumption are its shortcomings

The optical electric field sensor system is complex, and the multiple physical effects of optical materials affect each other and the stability and reliability of optical materials themselves. The optical measurement method is not very practical and is still in the experimental stage.

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