CN106898213B

CN106898213B - A concentric electrode electrostatic field simulation device and using method

Info

Publication number: CN106898213B
Application number: CN201710242144.1A
Authority: CN
Inventors: 于力刚; 何君琦; 赵健
Original assignee: Huaibei Normal University
Current assignee: Huaibei Productivity Promotion Center
Priority date: 2017-04-14
Filing date: 2017-04-14
Publication date: 2019-01-25
Anticipated expiration: 2037-04-14
Also published as: CN106898213A

Abstract

The invention discloses a kind of concentric electrode static field simulation device and application methods, it include pedestal, longitudinal moving mechanism, transverse moving mechanism, probe mechanism, concentric electrode plate, longitudinal moving mechanism includes two longitudinal rails for being fixed on pedestal two sides in parallel, a longitudinal sliding block is slidably fitted on every longitudinal rail respectively, is further fixed on longitudinal scale on longitudinal rail；Transverse moving mechanism includes a cross slide way, and the both ends of cross slide way are separately fixed on a longitudinal sliding block, and a transverse slider is slidably fitted on cross slide way, is further fixed on lateral scale on cross slide way；Probe mechanism is fixed on transverse slider；Concentric electrode plate is fixed on the center of pedestal；Probe mechanism can realize moving freely and carrying out DATA REASONING longitudinally, laterally in moving range.The present invention improves the stability and reliability that instrument uses.

Description

A kind of concentric electrode static field simulation device and application method

Technical field:

The present invention relates to experiment teaching instrument fields, and in particular to a kind of concentric electrode static field simulation device and use Method.

Background technique:

Electrical body ambient static electricity field distribution is understood and grasped, it is particularly significant for certain scientific researches and engineering technology, but It generally is difficult to calculate electrostatic field distribution with theoretical method, also extremely difficult, the measurement of electrostatic field is directly measured with instrument Simulation is generally used, using steady high voltage system analog electrostatic field, is determined by the Potential Distributing in measurement constant current field The Potential Distributing of electrostatic field.In Physics Practical Courses, " simulation of electrostatic field is described " experiment belongs to basic experiment, Instrument number of users and frequency of use are very high, according to teaching material requirement and course arrangement, the concentric electrode knot in teaching practice Structure is most widely used.

With steady high voltage system analog electrostatic field, steady high voltage system is established, the electrode of current field is made into using good conductor, and Non-conductor with resistivity much larger than electrode resistance rate serves as conductive matter, such as conductive crystallite, tap water, depleted copper sulfate solution Deng laboratory apparatus in practical application, water tank type analog electrostatic field mapping instrument and conductive micro-crystal electrostatic field plotter are relatively common.

The generally square in cross-section sink of water tank type analog electrostatic field mapping instrument basic structure, each sink is interior to place a set of metal electricity Pole in the fixed electrode position of slot bottom aperture, and is connect with slot external circuit.Sink injects tap water as dielectric when experiment, sets In on measurement bay, usually using the double-deck probe as measurement, the tool of record.Water tank type analog electrostatic field mapping instrument is sudden and violent in use Some problems are revealed, such as the non-design level regulating device of sink structure, when experiment cannot level water layer, it cannot be guaranteed that conductive be situated between The conductivity of matter is uniform everywhere, therefore will form very big measurement error；The positioning of double-deck probe is due to its design feature and can not The foozle avoided also can increase large error to measurement；Although having taken leak-proof measure, instrument after a period of use, Still drainage frequent occurrence at the perforation of electrode, and there are water to the etching problem of metal parts；Metal electrode in sink Type and mutual alignment cannot change once determining, lack the flexibility etc. used.

Conductive micro-crystal electrostatic field plotter avoids the problem of more water tank type instrument, is led using conductive crystallite as bad Body carries out data acquisition using synchronous probe, and measurement probe and conductive crystallite plate are kept in contact realization circuit communication, mobile to synchronize Probe finds satisfactory potential point, utilizes record probe records data acquisition.Since structure simple operations are convenient, quilt It is widely used.But this kind of instrument also exposes some defects after long-term use: measurement probe should be with electrode plate perfect condition Point contact, but due to technique realize it is difficult and prevent using when fracture, measurement probe generallys use the brass bar of diameter 2mm or so Material, probe tips are processed into the structure with point, instrument using when be steadily contacted to make to measure probe and conducting medium, can exert oneself Pressing measurement contact device, also needs that stroke is back and forth to find the position of required potential point with measurement probe, when instrument uses one section After time, the tip portion for measuring probe can gradually be worn into a rough face, while contact area will increase, and lead When causing survey measurements, the reading on display screen is unstable, floats up and down, to have found the equipotential of mistake in measurement Point makes description image large error occur；After measuring probe abrasion, probe height is reduced, so that measuring probe in experimentation It is affected with the synchronism of record probe, that is, requirement of two probes in same plummet face cannot be guaranteed up and down after wearing, and make Measurement error is obtained to become larger；Synchronous probe structure can introduce error, and synchronous probe is matched by metallic supports such as pedestal, handle and connection sheets The compositions such as measurement probe, nut are closed, since synchronous probe is exposed in air for a long time, the contact for measuring probe and connection sheet is easy It gets rusty, leads to the unstable of circuit on-state, simultaneously as the influence of iron rust, causes resistance to become larger, deviate measured value true Real value seriously affects experimental result；In addition, synchronizing, probe is independent of one another with apparatus subject, is separated from each other, to placement platform requirement It is higher.

Summary of the invention:

Technical problems to be solved of the present invention are:

1, innovative design product structure, by probe it is mobile with measure, interrecord structure is integrated together, using measurement probe and Probe coaxial configuration is recorded, shortens measurement circuit, reduces measurement arm contact resistance, eliminates and takes a mistake caused by instrument itself Difference improves DATA REASONING precision；

2, using conductive crystallite rather than water as non-conductor make electrode plate, avoid water tank type analog electrostatic field instrument Problems；

3, be used for a long time after measure probe and electrode plate sliding frictional wear it is serious, probe contact area it is uneven and Data error caused by increasing increases, and improving contact structures reduces the measurement probe degree of wear, solves to make to measure probe because of abrasion Shortening causes to record probe and measures the problem of probe is detached from same plummet face, influences measurement result.

For this purpose, the present invention provides a kind of concentric electrode static field simulation device and application method, which is suitable for mould Electrostatic field distribution between the quasi- long straight coaxle cylinder shape electrode of method research, is also applied for the Experiment of College Physics " simulation of electrostatic field Describe ".

The technical solution adopted by the present invention is that:

A kind of concentric electrode static field simulation device, it is characterised in that: include pedestal, longitudinal moving mechanism, transverse direction Mobile mechanism, probe mechanism, concentric electrode plate, the longitudinal moving mechanism include two and are fixed on pedestal two sides in parallel Longitudinal rail is slidably fitted with a longitudinal sliding block on every longitudinal rail respectively, is further fixed on longitudinal scale on longitudinal rail； The transverse moving mechanism includes a cross slide way, and the both ends of cross slide way are separately fixed on a longitudinal sliding block, horizontal It is slidably fitted with a transverse slider on direction guiding rail, is further fixed on lateral scale on cross slide way；The probe mechanism is fixed on On transverse slider；The concentric electrode plate is fixed on the center of pedestal, and concentric electrode plate includes inside and outside electrode, Inside and outside electrode is connect with positive and negative binding post respectively by connecting terminal and conducting wire；The probe mechanism can be real in moving range Now moving freely and carrying out DATA REASONING longitudinally, laterally.

A kind of concentric electrode static field simulation device, it is characterised in that: the pedestal includes metal plate, four Branch lower margin, four lower margins are fixed on metal plate lower part by screw.

A kind of concentric electrode static field simulation device, it is characterised in that: the interior electricity of the concentric electrode plate The extremely round positive electrode of diameter 10mm, the circular ring shape negative electrode of dispatch from foreign news agency extremely internal diameter 140mm, outer diameter 160mm, interior electrode connection Positive terminal, external electrode connect negative terminal.

A kind of concentric electrode static field simulation device, it is characterised in that: the concentric electrode plate is generally Square structure, the region on concentric electrode plate except inside and outside electrode covers one layer of conductive crystallite, and conductive crystallite is led to be bad Body, internal and external electrode can set up steady high voltage system after applying voltage.

A kind of concentric electrode static field simulation device, it is characterised in that: the concentric electrode plate it is inside and outside Electrode is fixed on the base by electrode plate fixing piece, and electrode plate fixing piece is non-metal board, electrode plate fixing piece and pedestal it Between there are space be used to arrange conducting wire and connecting terminal between inside and outside electrode and positive and negative binding post, outside positive and negative binding post Power supply positive and negative electrode can be connected, positive terminal is red, and negative terminal is black.

A kind of concentric electrode static field simulation device, it is characterised in that: the probe mechanism includes measurement Probe, record probe, handle, measurement probe, record probe are threadedly connected to the upper and lower ends of handle, measurement probe, note respectively Record probe is coaxial configuration；The lower end suit of the handle is connected with link block, and upper and lower ring is respectively equipped on handle and link block Shape step, is equipped with spring between handle and link block, the upper and lower end face of spring is against the lower end surface of ring-shaped step under respectively On the upper surface of ring-shaped step；The probe mechanism is connected and fixed by link block and transverse slider.Measurement probe is machined with circle Pass binding post connect by the flexible terminal of wire termination with voltmeter one end of measurement current potential, the voltmeter other end with outside Electrode connection.

A kind of concentric electrode static field simulation device, it is characterised in that: the measurement probe includes probe Bar, metal balls, probe rod are gradually become smaller using the structure of ladder transition, diameter, and the conical surface, the conical surface are processed into the end of probe rod Front end process inner hole, metal balls are placed in inner hole and close up, and fall off and can be in inner hole so that metal balls are unlikely Freely roll.

A kind of concentric electrode static field simulation device, it is characterised in that: the metal balls use wearability Material production high and with good conductivity, and become smaller in technique allowed band ball diameter, contact area can become smaller, and help to mention High data precision.In instrument use process, the ball and the realization of concentric electrode plate for measuring probe are in rolling contact, and are able to solve Sliding contact structural friction force leads to greatly the problem of serious wear, can be improved DATA REASONING precision, reduces experimental error, this Outside, measurement probe takes threaded connection, conveniently replaced.

A kind of concentric electrode static field simulation device, it is characterised in that: be equipped on the quadrangle of the pedestal Four pillars are fixed with a record place sheet of paper at the top of four pillars, record and be provided with through-hole in the middle part of place sheet of paper, through-hole Concentric with the inside and outside electrode of concentric electrode plate, through-hole diameter size is greater than dispatch from foreign news agency polar diameter 5mm；Probe is measured in concentric circles While measurement on electrode plate, record probe carries out data record in recording sheet.

An a kind of concentric electrode static field simulation device, it is characterised in that: further include thering is to be placed in a record Place sheet of paper top, due to the pressing plate that fastens recording sheet in test, the pressing plate by thick sheet metal and same size bullet Property rubber pad bonding composition.

In use, operator grasps probe handle, mobile longitudinally, laterally mobile mechanism makes to measure apparatus of the present invention It is moved including probe, between external electrode, when operation presses downwards lower handle compressed spring, so that measurement probe and concentric electrode plate Contact carries out data record after finding suitable potential point, measures probe while measuring on concentric electrode plate, record is visited Needle carries out data record in recording sheet.

Apparatus of the present invention provide two kinds of application methods, take a method and coordinate value method:

1, a method is taken, i.e., the method for potential point being acquired and being tagged to recording sheet:

(1) power supply is wired to the positive and negative binding post of concentric electrode static field simulation device, adjustment is suitble to Voltage value establish steady high voltage system, and introduce measurement voltmeter；

(2) recording sheet is placed in the upper plane of record place sheet of paper, is fixed with pressing plate, prevents recording sheet mobile；

(3) probe handle is grasped and compressed spring of exerting oneself downwards, so that measurement probe is contacted with concentric electrode plate, Moving handle enables measurement probe longitudinally, laterally to move simultaneously；

(4) moving handle observes voltmeter simultaneously, when reaching required potential point, pulls up handle, and to record Probe leaves a mark point in recording sheet, that is, has collected and recorded 1 data point, and so on continue acquire data point；

(5) recording sheet is removed after data acquisition, is that foundation carries out drafting electric field as required with the data in recording sheet Distribution map calculates the data processings such as measurement error.

2, coordinate value method collects and records the method for potential point transverse and longitudinal coordinate value:

(2) coordinate system is established, using the interior electrode centers point of concentric electrode plate as origin, with probe vertical, horizontal movement side Rectangular coordinate system is established to for reference axis in length and breadth；

(3) handle traverse measurement probe is held to interior electrode centers position, observes the pointer on longitudinally, laterally guide rail slide block It should refer at 0 graduation mark of respective scale；

(4) moving handle observes voltmeter simultaneously, when reaching required potential point, observes and records longitudinally, laterally guide rail On pointer corresponding to scale value, and recorded in a manner of transverse and longitudinal coordinate value；

(5) using this method obtain experimental data be series of points coordinate value, carry out drafting distribution map of the electric field, calculate These data can be marked when the data processings such as measurement error one by one on graph paper, carry out follow-up data processing, it can also be with The coordinate of these points is inputted into computer, is completed at experimental data by the data processing of computer software and graphics processing function Reason.

The beneficial effects of the present invention are:

1, the present invention devises a concentric electrode static field simulation device, takes sliding block guide track structure vertical as probe To, transverse moving mechanism, the stability and reliability that instrument uses are improved；

2, probe movement is integrated together with measurement, interrecord structure, using measurement probe and records probe coaxial configuration, Shorten measurement circuit, reduce measurement arm contact resistance, eliminate and take point tolerance caused by instrument itself, improves DATA REASONING essence Degree；

3, measurement probe takes the mode being in rolling contact to acquire data point, greatly reduces the degree of wear of probe tips, The problem that data are unstable, error is excessive caused by probe abrasion can be prevented, while being able to extend instrument service life, rolling connects The probe diameter of touching can suitably increase, and can prevent from fractureing and deforming in use process, improve stability that instrument uses and can By property；

4, this experimental provision can realize the method for taking two kinds of data records of a method and coordinate value method, can according to actual needs into Row selection, can directly carry out distribution map of the electric field drafting etc. after taking a method that data point is collected recording sheet, coordinate value method can be by number Computer is inputted according to coordinate, completes data processing by the correlation function of data processing and PaintShop；

5, using modularized design, be easily installed maintenance and expansion upgrading, such as only with coordinate value method when, can be by recording sheet Fixed module is removed, and such as needs replacing the electrode plate of other structures form, dismountable concentric electrode plate is replaced, only needs to protect Card installation hole location is consistent.

Detailed description of the invention:

Fig. 1 is the general structure schematic diagram of concentric electrode static field simulation device of the invention.

Fig. 2 is the general structure schematic diagram that concentric electrode static field simulation device of the invention has positive and negative binding post.

Fig. 3 is simulator experimental principle circuit diagram.

Fig. 4 is the schematic view of the front view of probe mechanism.

Fig. 5 is the schematic cross-sectional view of probe mechanism.

Fig. 6 is the structural schematic diagram for measuring probe.

Fig. 7 is the partial enlarged view of Fig. 6.

Figure label:

1- pedestal, 2- longitudinal rail, 3- cross slide way, 4- pillar, 5- record place sheet of paper, 6- pressing plate, 7- probe mechanism, 8- concentric electrode plate, 9- electrode plate fixing piece, the positive and negative binding post of 10-, 11- longitudinal sliding block, the longitudinal direction 12- scale, 13- are lateral Sliding block, 14- transverse direction scale, 15- measurement probe, 16- record probe, 17- handle, 18- link block, 19- spring, 20- probe rod, 21- metal balls.

Specific embodiment:

As shown in figs. 1-7, a kind of concentric electrode static field simulation device includes pedestal 1, longitudinal moving mechanism, cross To mobile mechanism, probe mechanism 7, concentric electrode plate 8, longitudinal moving mechanism includes two and is fixed on 1 two sides of pedestal in parallel Longitudinal rail 2, be slidably fitted with a longitudinal sliding block 11 respectively on every longitudinal rail 2, be further fixed on longitudinal rail 2 vertical To scale 12；Transverse moving mechanism includes a cross slide way 3, and it is sliding that the both ends of cross slide way 3 are separately fixed at a longitudinal direction On block 11, it is slidably fitted with a transverse slider 13 on cross slide way 3, lateral scale 14 is further fixed on cross slide way 3；Probe Mechanism 7 is fixed on transverse slider 13；Concentric electrode plate 8 is fixed on the center of pedestal 1, and concentric electrode plate 8 includes There is inside and outside electrode, inside and outside electrode is connect with positive and negative binding post 10 respectively by connecting terminal and conducting wire；Probe mechanism 7 can be Moving freely and carrying out DATA REASONING longitudinally, laterally is realized in moving range.

Pedestal 1 includes metal plate, four lower margins, and four lower margins are fixed on metal plate lower part by screw.

The interior electrode of concentric electrode plate 8 is the round positive electrode of diameter 10mm, dispatch from foreign news agency extremely internal diameter 140mm, outer diameter The circular ring shape negative electrode of 160mm, interior electrode connect positive terminal, and external electrode connects negative terminal.

The generally square structure of concentric electrode plate 8, the region on concentric electrode plate 8 except inside and outside electrode cover one Layer conductive crystallite, conductive crystallite are non-conductor, and internal and external electrode can set up steady high voltage system after applying voltage.

The inside and outside electrode of concentric electrode plate 8 is fixed on pedestal 1 by electrode plate fixing piece 9, electrode plate fixing piece 9 For non-metal board, there are spaces for arranging between inside and outside electrode and positive and negative binding post between electrode plate fixing piece 9 and pedestal 1 Conducting wire and connecting terminal, power supply positive and negative electrode can be connected outside positive and negative binding post, positive terminal is red, negative terminal For black.

Probe mechanism 7 includes measurement probe 15, record probe 16, handle 17, and measurement probe 15, record probe 16 are distinguished The upper and lower ends of handle 17 are threadedly connected to, measurement probe 15, record probe 16 are coaxial configuration；The lower end of handle 17 covers load It is connected to link block 18, upper and lower ring-shaped step is respectively equipped on handle 17 and link block 18, is equipped between handle 17 and link block 18 Spring 19, the upper and lower end face of spring 19 are against respectively on the lower end surface of ring-shaped step and the upper surface of lower ring-shaped step；Probe Mechanism 7 is connected and fixed by link block 18 with transverse slider 13.

Measurement probe 15 includes probe rod 20, metal balls 21, probe rod 20 using the structure of ladder transition, diameter by Step becomes smaller, and the conical surface is processed into the end of probe rod, and the front end of the conical surface processes inner hole, and metal balls 21 are placed in inner hole and are received Mouthful, it falls off and can freely be rolled in inner hole so that ball is unlikely.

The material production high and with good conductivity using wearability of metal balls 21, and in technique allowed band ball diameter Become smaller, contact area can become smaller, and help to improve data precision.In instrument use process, measure the ball of probe with it is concentric The problem of circle electrode plate realization is in rolling contact, and being able to solve sliding contact structural friction force greatly leads to serious wear, can be improved DATA REASONING precision reduces experimental error, in addition, measurement probe takes threaded connection, it is conveniently replaced.

Four pillars 4 are installed on the quadrangle of pedestal 1, the top of four pillars 4 is fixed with a record place sheet of paper 5, Recording sheet places and is provided with through-hole in the middle part of 5 plates, and the inside and outside electrode of through-hole and concentric electrode plate is concentric, and through-hole diameter size is big In dispatch from foreign news agency polar diameter 5mm；Probe is measured while measuring on concentric electrode plate, record probe carries out data in recording sheet Record.

It further include thering is one to be placed in record 5 top of place sheet of paper, the pressing plate 6 due to fastening recording sheet in test, The pressing plate 6 is formed by thick sheet metal is Nian Jie with the resilient rubbber cushion of same size.

In use, operator grasps probe handle 17, mobile longitudinally, laterally mobile mechanism makes to survey apparatus of the present invention It including amount probe, moves between external electrode, when operation presses downwards 17 compressed spring 19 of lower handle, so that measurement probe and concentric circles Electrode plate contact carries out data record after finding suitable potential point, measures probe while measuring on concentric electrode plate, Record probe carries out data record in recording sheet.

(1) power supply is wired to the positive and negative binding post 10 of concentric electrode static field simulation device, adjustment is suitable The voltage value of conjunction establishes steady high voltage system, and introduces measurement voltmeter；

(2) recording sheet is placed in the upper plane of record place sheet of paper 5, is fixed with pressing plate 6, prevents recording sheet mobile；

(3) probe handle 17 is grasped and compressed spring 19 of exerting oneself downwards, so that measurement probe 15 and concentric electrode Plate 8 contacts, while moving handle 17 enables measurement probe longitudinally, laterally to move；

(4) moving handle 17 observes voltmeter simultaneously, when reaching required potential point, pulls up handle, and to remember Record probe and in recording sheet leave a mark point, that is, collected and recorded 1 data point, and so on continue to acquire data point；

(2) coordinate system is established, using the interior electrode centers point of concentric electrode plate 8 as origin, with probe vertical, horizontal movement side Rectangular coordinate system is established to for reference axis in length and breadth；

(3) 17 traverse measurement probe of handle is held to interior electrode centers position, observes the finger on longitudinally, laterally guide rail slide block Needle should refer at 0 graduation mark of respective scale；

(4) moving handle 17 observes voltmeter simultaneously, when reaching required potential point, observes and records and longitudinally, laterally leads Scale value corresponding to pointer on rail, and recorded in a manner of transverse and longitudinal coordinate value；

Claims

1. a concentric circular electrode electrostatic field simulation device is characterized in that: comprise a base, a longitudinal movement mechanism, a lateral movement mechanism, a probe mechanism, a concentric circular electrode plate, and the longitudinal movement mechanism includes two parallel fixed on the base. The longitudinal guide rails on both sides, each longitudinal guide rail is slidably installed with a longitudinal slider, and a longitudinal ruler is also fixed on the longitudinal guide rail; On the slider, a lateral slider is slidably installed on the lateral guide rail, and a lateral scale is also fixed on the lateral guide rail; the probe mechanism is fixed on the lateral slider; the concentric circular electrode plate is fixed at the center of the base, concentric The circular electrode plate includes inner and outer electrodes, and the inner and outer electrodes are respectively connected with the positive and negative terminals through the connection terminals and wires; the probe mechanism realizes free movement in the vertical and horizontal directions within the moving range and performs data measurement.

2 . The concentric electrode electrostatic field simulation device according to claim 1 , wherein the base comprises a metal plate and four ground feet, and the four ground feet are fixed to the lower part of the metal plate by screws. 3 .

3. A concentric electrode electrostatic field simulation device according to claim 1, wherein the inner electrode of the concentric electrode plate is a circular positive electrode with a diameter of 10mm, and the outer electrode is a circle with an inner diameter of 140mm and an outer diameter of 160mm. A circular negative electrode, the inner electrode is connected to the positive terminal, and the outer electrode is connected to the negative terminal.

4. A concentric electrode electrostatic field simulation device according to claim 3, characterized in that: the concentric electrode plate has a square structure as a whole, and the areas on the concentric electrode plate except the inner and outer electrodes are covered with a layer of Conductive crystallites, conductive crystallites are poor conductors.

5. A concentric electrode electrostatic field simulation device according to claim 4, wherein the inner and outer electrodes of the concentric electrode plates are fixed on the base by an electrode plate fixing member, and the electrode plate fixing member is a non-contact electrode. The metal plate, the space between the electrode plate fixing member and the base is used for arranging the wires and terminals between the inner and outer electrodes and the positive and negative terminals.

6. A concentric electrode electrostatic field simulation device according to claim 1, wherein the probe mechanism comprises a measuring probe, a recording probe and a handle, and the measuring probe and the recording probe are respectively screwed together On the upper and lower ends of the handle, the measuring probe and the recording probe are coaxial structures; the lower end of the handle is sleeved and connected with a connecting block, and the handle and the connecting block are respectively provided with upper and lower annular steps, and the handle and the connecting block are respectively provided with upper and lower annular steps. A spring is provided, and the upper and lower end faces of the spring abut against the lower end face of the upper annular step and the upper end face of the lower annular step respectively; the probe mechanism is connected and fixed with the transverse slider through a connecting block.

7 . A concentric electrode electrostatic field simulation device according to claim 6 , wherein the measuring probe comprises a probe rod and a metal ball, and the probe rod adopts a stepped transition structure, and the diameter gradually becomes smaller. 8 . , The end of the probe rod is machined into a tapered surface, the front end of the tapered surface is machined with an inner hole, and the metal ball is placed in the inner hole and closed, so that the metal ball does not fall off and can roll freely in the inner hole.

8 . The electrostatic field simulation device for concentric electrodes according to claim 7 , wherein the metal balls are made of materials with high wear resistance and good electrical conductivity. 9 .

9 . A concentric electrode electrostatic field simulation device according to claim 6 , wherein four pillars are installed on the four corners of the base, and a recording paper placing board is fixed on the top of the four pillars, and the recording paper There is a through hole in the middle of the placement plate, the through hole is concentric with the inner and outer electrodes of the concentric electrode plate, and the diameter of the through hole is 5mm larger than the diameter of the outer electrode; while the measuring probe is measuring on the concentric electrode plate, the recording probe is Data is recorded on recording paper.

10. A concentric electrode electrostatic field simulation device according to claim 6, characterized in that it further comprises a pressing plate placed on the upper part of the recording paper placing plate, because the recording paper is pressed firmly during the test, the pressing plate It consists of thick metal plates bonded with elastic rubber pads of the same size.

11. A method of using the electrostatic field simulating device based on the concentric electrodes of claim 1, characterized in that: two methods of use are provided, namely, a point-taking method and a coordinate value method:

(1) Point-taking method, that is, the method of collecting and marking potential points on the recording paper:

1) Connect the power supply to the positive and negative terminals of the concentric electrode electrostatic field simulation device through wires, adjust the appropriate voltage value to establish a stable and constant current field, and introduce a measuring voltmeter;

2) Place the recording paper on the upper plane of the recording paper placement plate, and fix it with a pressure plate to prevent the recording paper from moving;

3) Hold the handle of the probe by hand and compress the spring forcefully downward, so that the measuring probe is in contact with the concentric electrode plate, and at the same time move the handle so that the measuring probe can move longitudinally and laterally;

4) Move the handle while observing the voltmeter. When the desired potential point is reached, pull the handle upward and make the recording probe leave a mark on the recording paper, that is, 1 data point is collected and recorded, and so on to continue the collection data point;

5) After the data collection is completed, remove the recording paper, draw the electric field distribution diagram and calculate the measurement error based on the data on the recording paper as required;

(2) Coordinate value method, that is, the method of collecting and recording the horizontal and vertical coordinate values of potential points:

2) Establish a coordinate system, take the center point of the inner electrode of the concentric electrode plate as the origin, and establish a rectangular coordinate system with the vertical and horizontal movement directions of the probe as the vertical and horizontal coordinate axes;

3) Hold the handle to move the measuring probe to the center of the inner electrode, and observe that the pointers on the vertical and horizontal rail sliders should point to the 0 scale line of their respective scales;

4) Move the handle and observe the voltmeter at the same time. When the required potential point is reached, observe and record the scale values corresponding to the pointers on the vertical and horizontal guide rails, and record them in the form of abscissa and ordinate values;

5) The experimental data obtained by the above method are the coordinate values of a series of points. When drawing the electric field distribution map and calculating the measurement error, mark these data on the coordinate paper one by one, and perform subsequent data processing, or the coordinates of these points. Input the computer, and complete the experimental data processing with the help of the data processing and graphics processing functions of the computer software.