阅读说明：本技术 一种用于校准小型化合成电场均匀域的装置及方法 (Device and method for calibrating uniform domain of miniaturized synthetic electric field ) 是由 干喆渊 张建功 张业茂 谢辉春 刘震寰 张磊 张用 王延召 赵军 路遥 周兵 于 2019-09-03 设计创作，主要内容包括：本发明公开了一种用于校准小型化合成电场均匀域的装置及方法,属于电磁测量及校准技术领域。本发明装置包括：两层圆形板极,所述圆形板极边缘经倒角处理,两层圆形板极间用预设长度d的多个环氧树脂支柱支撑；环氧树脂支柱具有孔洞间距为d/4的多个孔洞,圆形板极平行的平面内的多个环氧树脂支柱的多个孔洞穿单匝预设直径的铜丝形成闭环,铜丝接头处使用焊接进行连接。本发明利用小型均压环的思路,实现了在保证足够测试空间的情况下消除由于大幅减小平行极板半径和等比例缩小平行极板间距而导致边缘效应带来的均匀域减小问题。(The invention discloses a device and a method for calibrating a uniform domain of a miniaturized synthetic electric field, and belongs to the technical field of electromagnetic measurement and calibration. The device of the invention comprises: the edge of each circular plate is subjected to chamfering treatment, and the gap between the two layers of circular plates is supported by a plurality of epoxy resin struts with preset lengths d; the epoxy resin pillars are provided with a plurality of holes with hole spacing of d/4, a plurality of holes of the epoxy resin pillars in a plane parallel to the circular plate electrode penetrate through a single-turn copper wire with a preset diameter to form a closed loop, and joints of the copper wire are connected by welding. The invention utilizes the thought of a small grading ring to solve the problem of uniform domain reduction caused by edge effect due to the fact that the radius of the parallel polar plates is greatly reduced and the distance between the parallel polar plates is reduced in equal proportion under the condition that enough testing space is ensured.)

1. An apparatus for calibrating a miniaturized synthetic electric field homogeneous field, the apparatus comprising:

The two layers of circular plate electrodes are supported by a plurality of epoxy resin struts with preset lengths d;

The novel plate electrode comprises a plurality of epoxy resin pillars, wherein the epoxy resin pillars are provided with a plurality of holes with hole intervals of d/4, a plurality of holes of the epoxy resin pillars in a plane parallel to the circular plate electrode penetrate through a single-turn copper wire with a preset diameter to form a closed loop, and joints of the copper wire are connected by welding.

2. the device according to claim 1, wherein the preset length d is in the range of 80mm-120 mm.

3. The apparatus of claim 1, wherein the radius r of the circular plate is in the range of 50mm-150 mm.

4. The device of claim 1, wherein the joints of the copper wires are smooth and have no discharge points.

5. The apparatus of claim 1, wherein the edges of the circular plate are chamfered.

6. A method of calibrating a miniaturized synthetic electric field homogeneous field using the apparatus of any one of claims 1 to 5, the method comprising:

The device is placed in a miniaturized synthetic electric field, voltage sharing is applied to closed-loop copper wires in the holes of the epoxy resin pillars, and the uniform domains of the miniaturized synthetic electric field are divided.

Technical Field

the present invention relates to the field of electromagnetic measurement and calibration techniques, and more particularly, to an apparatus and method for calibrating a uniform domain of a miniaturized synthetic electric field.

Background

The existing synthetic electric field calibration device is formed by adopting large parallel polar plates, usually a metal plate with the diameter of 2m is adopted, the distance between the polar plates is 10cm, the size is large, the device can only be fixed in a laboratory, and the device cannot be moved to a field monitoring point for use.

With the diversification of measurement environments, the measurement device must be calibrated on site before measurement in different environments, and the accuracy of measurement results can be ensured only in this way. Therefore, the calibration device can be used in the field only after being miniaturized.

The calibration device cannot simply reduce the large parallel polar plate in equal proportion, and the simple reduction of the size in equal proportion can cause that enough internal space is not available for placing the sensor; if no measures are taken, the size of the metal plate is reduced and the distance between the polar plates is increased, so that the uniform domain is reduced due to the existence of polar plate edge effect, and great errors are brought to calibration work.

disclosure of Invention

The present invention addresses the above-mentioned problems by providing an apparatus for calibrating a miniaturized synthetic electric field homogeneous field, the apparatus comprising:

The two layers of circular plate electrodes are supported by a plurality of epoxy resin struts with preset lengths d;

the novel plate electrode comprises a plurality of epoxy resin pillars, wherein the epoxy resin pillars are provided with a plurality of holes with hole intervals of d/4, a plurality of holes of the epoxy resin pillars in a plane parallel to the circular plate electrode penetrate through a single-turn copper wire with a preset diameter to form a closed loop, and joints of the copper wire are connected by welding.

Optionally, the preset length d ranges from 80mm to 120 mm. The specific values given in the cross-reference are modified to range values as determined by the inventors.

optionally, the radius r of the circular plate is in the range of 50mm-150 mm.

Optionally, the copper wire joint is smooth, and no discharge point appears.

Optionally, the edge of the circular plate is chamfered.

The present invention also provides a method of calibrating a miniaturized synthetic electric field homogeneous field using an apparatus for calibrating a miniaturized synthetic electric field homogeneous field, the method comprising:

The device is placed in a miniaturized synthetic electric field, voltage sharing is applied to closed-loop copper wires in the holes of the epoxy resin pillars, and the uniform domains of the miniaturized synthetic electric field are divided.

The invention utilizes the thought of a small grading ring to solve the problem of uniform domain reduction caused by edge effect due to the fact that the radius of the parallel polar plates is greatly reduced and the distance between the parallel polar plates is reduced in equal proportion under the condition that enough testing space is ensured.

The invention adopts a mode of winding metal wires on the support column according to a certain proportion distance to optimally adjust the electric field of the whole polar plate space, eliminates the problem of reducing the uniform domain caused by the polar plate edge effect, compares the uniform domain improvement effects brought by different proportions and gives the optimal proportion relation.

The invention can furthest promote the uniform domain range of the miniaturized synthetic electric field calibration device by using a minimum adjustment mode, thereby providing an ideal calibration environment for the calibration of the synthetic electric field probe.

Drawings

FIG. 1 is a block diagram of an apparatus for calibrating a uniform domain of a miniaturized synthetic electric field according to the present invention;

FIG. 2 is a diagram of an unapplied voltage-sharing domain for a method of calibrating a miniaturized combined electric field domain according to the present invention;

FIG. 3 is a diagram of voltage-sharing domain application according to one method for calibrating the uniform domain of a miniaturized composite electric field;

FIG. 4 is a flow chart of a method for calibrating a uniform domain of a miniaturized synthetic electric field according to the present invention.

Detailed Description

The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.

Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.

The invention proposes a device for calibrating a uniform domain of a miniaturized synthetic electric field, as shown in fig. 1, comprising:

The edge of each circular plate is subjected to chamfering treatment, and the electrodes of the two circular plates are isolated by a plurality of epoxy resin struts with preset lengths d;

The novel plate electrode is characterized by comprising a plurality of epoxy resin pillars, wherein the epoxy resin pillars are provided with a plurality of holes with hole intervals of d/4, a plurality of holes of the epoxy resin pillars in a plane parallel to the circular plate electrode penetrate through a single-turn copper wire with a preset diameter to form a closed loop, the copper wire joints are smooth, discharge points do not appear at the copper wire joints, and the copper wire joints are connected by welding and packaged.

holes are punched on the epoxy resin support columns at equal intervals according to the length of d/4 to fix the thin copper wires. Theoretically, the smaller the distance, the better the effect, the smaller the distance, the better the distance of the patent comparing d/2 length, d/3 length, d/4 length, d/5 length, d/6 length, d/10 length, it is found that the uniform domain is not smooth enough when the distance is larger than d/4 length, the improvement of the uniform domain is limited after the distance is smaller than d/4 length, and finally the d/4 length is determined to be adopted as the distance.

The preset length d ranges from 80mm to 120 mm.

the radius r of the circular plate is 50-150 mm.

The present invention also proposes a method for calibrating a miniaturized synthetic electric field homogeneous field using a device for calibrating a miniaturized synthetic electric field homogeneous field, as illustrated in fig. 4, comprising:

The device is placed in a miniaturized synthetic electric field, voltage sharing is applied to closed-loop copper wires in the holes of the epoxy resin pillars, and the uniform domains of the miniaturized synthetic electric field are divided.

as shown in fig. 2, the uniform area of the closed-loop copper wire is not equalized, and as shown in fig. 3, the uniform area of the closed-loop copper wire is equalized.

FIG. 2 shows its homogeneous domains, and it can be seen that 95% homogeneous domains are less than ideal; fig. 3 shows the uniform area of the parallel plate calibration device optimized by winding fine copper wires at equal intervals according to the length of d/4, and it can be seen that the 95% uniform area is greatly improved. The invention utilizes the thought of a small grading ring to solve the problem of uniform domain reduction caused by edge effect due to the fact that the radius of the parallel polar plates is greatly reduced and the distance between the parallel polar plates is reduced in equal proportion under the condition that enough testing space is ensured.

the invention adopts a mode of winding metal wires on the support column according to a certain proportion distance to optimally adjust the electric field of the whole polar plate space, eliminates the problem of reducing the uniform domain caused by the polar plate edge effect, compares the uniform domain improvement effects brought by different proportions and gives the optimal proportion relation.

the invention can furthest promote the uniform domain range of the miniaturized synthetic electric field calibration device by using a minimum adjustment mode, thereby providing an ideal calibration environment for the calibration of the synthetic electric field probe.