Round comb type minisize electric field sensor

Abstract

Disclosed is a circular comb-type micro electric field sensor which comprises: comb-type fixed electrode (1) and comb-type bucking electrode (2) distributed along vibration direction with space on circumference; on the comb-type bucking electrode (2) being opened grid hole (4); a sensing electrode (3) being positioned under the grid hole (4). The inventive sensor has the advantages of having accurate offset and good periodicity, of facilitating to detect weak electric field signal and of having less signal interference between grid holes.

Description

technical field [0001] The invention relates to a sensor, in particular to a circular comb-tooth miniature electric field sensor. Background technique [0002] Electric field sensors are widely used in geoscience fields such as atmospheric circulation research, geological disaster forecasting, meteorological and dust forecasting, air pollution detection, etc., as well as the measurement of electric field distribution at the end of the motor and under high-voltage overhead lines, and the analysis of discharge phenomena in electrical sealing devices. Industrial production fields such as ion flow field near ultra-high voltage transmission lines [and long-gap glow discharge characteristics, etc., also have important applications in aerospace, electrostatic protection, biological physiology, testing and living environment monitoring. [0003] There are many types of electric field sensors, which can be roughly divided into two types: mechanical and optical according to their work...

AI Technical Summary

Problems solved by technology

The mechanical electric field sensors that appeared in the early days mainly include rotary vane type, double ball type, etc., which have the advantages of simple structure and convenient production; the disadvantages are large volume, which leads to poor portability, high cost, and small range of use, etc. defect

The advantage of the optical electric field sensor is that the system responds quickly and has low noise. The disadvantage is that the manufacturing precision is high, which leads to high cost and complicated installation, and its detection range is generally limited to strong electric fields.

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