Vibration type direct-current composite electric field measuring sensor

Abstract

The invention discloses a vibration type direct current synthesis electric field measuring sensor, which comprises a moving plate, a static plate and a motion adjusting structure. The moving plate is a sensor plate group, the static plate is a shell of which the top is provided with a hole which is grounded, and the hole of the static plate is designed to be rectangular; a closed area with the same width as the open holes is arranged between the adjacent open holes in the static plate and is connected with the grounding shell, and the movable plate is a sine wave in a half cycle shape. According to the vibrating direct-current synthetic electric field measurement sensor, the rotating motion of the moving plate is changed into reciprocating motion in a plane, the working principle of the sensor is the same as that of a field mill, the mechanical structure is relatively simple, the vibrating moving plate and the static plate can be effectively connected to a subsequent circuit or the ground, the sensor is small in size and low in height, and the size of a measurement instrument can be reduced; therefore, the distortion of the measuring instrument to the measuring point electric field can be effectively reduced; the moving plates of the vibration type sensor are arranged in the static plate and are distributed at intervals, electrical connection caused by rainwater is avoided, and measurement in rainy days can be achieved.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a vibrating direct current synthetic electric field measurement sensor. Background technique [0002] The electromagnetic environment factors near the DC line mainly include DC synthetic electric field, DC magnetic field, radio interference, audible noise and ion current, etc. Among them, it is the direct current synthetic electric field that has a noticeable impact on the formation and life of residents along the line. The research on the influence of the DC synthetic electric field is based on the magnitude of the electric field and its effect on organisms. That is to say, to study the influence of the synthetic electric field near the direct current transmission line, it is necessary to know the magnitude of the synthetic electric field first. This requires on-site measurement of the DC electric field. The measurement accuracy of the synthetic electric field of high-voltage...

AI Technical Summary

Problems solved by technology

The sensor of the field mill adopts a fast-rotating moving plate structure. The unreliable grounding of the moving plate leads to the accumulation of ions on the moving plate, which in turn causes the electric field distortion at the measuring point and the change of ion distribution, and finally makes the measurement result deviate from the actual electric field and the accuracy is relatively low. Low; at the same time, the instrument is bulky and inconvenient to carry, the workload of on-site measurement layout is large, and the measurement efficiency is low

Among them, the reliability of the carbon brush contact method used by the rotating rotor is the main factor affecting the measurement of the synthetic electric field, which is an inevitable inherent defect of the rotary sensor (field mill)

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