CN207992112U - A kind of dielectric material surface charge self-operated measuring unit based on two axis slide units - Google Patents

Abstract

The utility model discloses a kind of dielectric material surface charge self-operated measuring units based on two axis slide units, belong to solid dielectric material surface charge measurement field, it includes that two axis move slide unit, the two axis movement slide unit is connected with dielectric sample mount, and the two axis movement slide unit can drive dielectric sample mount planar to move；It further includes the electrometer probe bracket and high-field electrode holder being arranged in the dielectric sample mount plane of movement upper space；It further includes PC host computers, and the PC host computers communicate to connect with two axis movement slide unit, electrometer probe bracket and high-field electrode holder and control the two axis movement slide unit, electrometer probe bracket and high-field electrode holder respectively carries out surface charge detection to the sample in dielectric sample mount.Above-mentioned setting makes the utility model easy to operate compared to the prior art, and motion control is accurate；The data of acquisition can be handled in real time, and pass through the intuitive showing material surface charge distribution situation of software.

Description

A kind of dielectric material surface charge self-operated measuring unit based on two axis slide units

Technical field

The utility model belongs to solid dielectric material surface charge measurement field, specifically a kind of based on two axis slide units Dielectric material surface charge self-operated measuring unit.

Background technology

Polymer dielectric material has a wide range of applications in power equipment, and the quality of insulation performance is directly related to Can equipment safe and stable operation.The insulation system being made of polymeric dielectric insulating materials is applying certain voltage hair After raw shelf depreciation, charge will accumulate in dielectric surface and be detained for a long time.Surface charge can not only make insulation system Original electric field is distorted, and can promote generation of discharging next time when external electrical field inverts, to cause dielectric exhausted Edge performance declines.Insulating material of polymer is largely used in modern industry motor, and the service life of motor then depends primarily on Its insulation life, more stringent requirements are proposed for the performance of the industrial system standard of modernization to motor.Therefore, pass through measurement Polymer surfaces charge, and assess polymer insulation charge accumulated characteristic and be of great significance.

In the prior art usually detect dielectric material surface charge using following several measurement methods：Dust figure Method, Pu Keersi electrooptic effects method and electrostatic probe method.

And the electrostatic probe method that the prior art uses wherein has following deficiency：It can not automatic measurement dielectric surface electricity Lotus；Measurement surface charge result is inaccurate, can not accurately adjust and measure position etc..

Utility model content

The content of the utility model is, for appeal problem, provides a kind of dielectric substance table based on two axis slide units Surface charge self-operated measuring unit realizes accurate scan of the electrostatic probe to specimen surface by two axis slide units；High-speed data is real-time Measurement data is acquired, measurement data is passed to computer and is handled by upper computer software, and material surface electricity is calculated by inversion algorithm Lotus is distributed, and drawing three-dimensional image.The utility model is easy to operate compared to the prior art, and motion control is accurate；It can be real-time The data of acquisition are handled, and pass through the intuitive showing material surface charge distribution situation of software.

The embodiment of the utility model is as follows:

A kind of dielectric material surface charge self-operated measuring unit based on two axis slide units, it includes that two axis move slide unit, The two axis movement slide unit is connected with dielectric sample mount, and the two axis movement slide unit can drive dielectric sample mount flat In-plane moving；It further includes the electrometer probe bracket and height being arranged in the dielectric sample mount plane of movement upper space Press electrode support；It further includes PC host computers, and the PC host computers move slide unit, electrometer probe bracket and height with two axis respectively Pressure electrode support communicates to connect and controls the two axis movement slide unit, electrometer probe bracket and high-field electrode holder to dielectric Sample in sample mount carries out surface charge detection.

Due to using above-mentioned setting, easy to operate compared to the prior art, motion control is accurate；It can be in real time to acquisition Data are handled, and pass through the intuitive showing material surface charge distribution situation of software.

Further, the two axis movement slide unit includes that bottom movement slide unit and top movements slide unit overlap joint are constituted, described Two axis move slide unit and are communicated to connect by two-dimensional slipway motion-control module and the PC host computers, the PC host computers programming control The two axis movement slide unit is made planar to move.

In above-mentioned setting, two axis movement slide unit is set as being made of the motion in one dimension slide unit of two different trips, i.e., Realize the movement of planar X and Y-direction.And in the utility model, according to corresponding experimental conditions by the one-dimensional slide unit row in bottom Cheng Dingwei 40cm, top slide unit travel settings are 10cm, while being respectively set in the end of two one-dimensional slide units and individually one A 57 stepper motor, then two 57 stepper motors and two-dimensional slipway motion-control module are communicated to connect, you can realization passes through PC Host computer is moved motion controller programming accurately controlling sliding table by respective paths.

Further, the dielectric sample mount include the metal partion (metp) for being successively set on top movements slide unit top, Teflon insulating barrier and circular copper plate electrode, the circular copper plate electrode ground connection.

Further, the electrometer probe bracket includes the jig main body of plate, is offered in the middle part of the jig main body For placing the probe aperture of electrometer probe, the probe aperture side wall is provided with fastening thread to adjust the probe aperture space in turn Lock electrometer probe；The jig main body is arranged by the first metallic support in 3 plane of movement of dielectric sample mount Upper space is also associated with the first accurate sliding rail and is visited with adjusting the electrometer between the jig main body and the first metallic support Head bracket and dielectric sample mount distance；The jig main body is made of Teflon insulating thin.

Due to being played a supporting role using the metal partion (metp) of above-mentioned setting, dielectric sample mount, and due to metal every The presence of plate so that reserve air-gap between Teflon insulating barrier and slide unit surface and avoid direct contact with, covert increases The distance between circular copper plate electrode and slide unit reduce the influence to discharge test as far as possible, while also contributing to protection two dimension Slide unit.Copper conducts electricity very well, therefore uses and be designed as circular copper coin as grounding electrode, and coordinates special high-field electrode It is and to reduce electrode edge electric field distortion to restore the physics discharge process of needle to board electrode as far as possible, makes test result more It is of practical significance.

In the measurement experiment to dielectric surface charge, measuring system uses high speed surface potentiometer（Trek 341B）, And it is used cooperatively high-voltage probe（Model 3455ET）It is protected using the matured product of Trek companies as the critical piece of measurement Card measures accurate, efficient.Electrometer probe bracket is designed and produced according to used high-voltage probe, and high-voltage probe highest can 20kV high pressures can be generated, therefore use Teflon insulating materials, probe aperture is accurately customized according to the actual size of probe, and is coordinated The fastening thread of front end, ensureing that probe is firm will not shake, and contribute to the accurate measurement to specimen surface.

Further, further include that the electrometer being detachably connected with probe aperture is popped one's head in, the electrometer probe passes through data Acquisition module communicates to connect with PC host computers and charge measurement data is sent to PC host computers.

Due to using above-mentioned setting, data branch is provided to the post-processing of result and the analysis of experimental conditions for PC host computers Support, employing mode are that data acquisition is started to work, and passes data back computer in real time.After acquisition terminates, upper computer software Data are pre-processed first, data abnormal point is detected first with Clustering Model, is handled, then to normal data It uses " apparent charge method " to carry out the inverting between current potential to charge to convert.Last three-dimensional drawing generates report.

Further, the high-field electrode holder includes insulating pad, perforative on the insulating pad to be provided with high pressure Electrode, the high-field electrode lower part are discharge end and are provided at the top of the dielectric sample mount, the high-field electrode The equal pressure cap of dome-type, the high-field electrode are connect with insulating pad by fastening nut；The insulating pad passes through the second metal Holder is arranged in the dielectric sample mount plane of movement upper space, between the insulating pad and the second metallic support also The second accurate sliding rail is connected with to adjust high-field electrode and dielectric sample mount distance.

Further, the high-field electrode is communicated to connect by high-pressure modular and PC host computers and receives the PC host computers Signal discharges to dielectric sample；The equal pressure cap of dome-type at the top of the high-field electrode is connected by high voltage cable and high-pressure modular It connects.

Due to using above-mentioned setting, the design of the equal pressure cap of the part-spherical is in order to play the role of uniform electric field, tradition High voltage cable and discharge electrode between connected using crocodile clip, severe non-uniform electric field is will produce in junction in this way, in height Press strip part（Especially high-frequency pulse voltage）Under will produce extremely strong electric discharge, the influence to sample can exceed that electrode It influences.Therefore the design for the equal pressure cap of hemispherical that the utility model uses, the tie point of cable and electrode inside equal pressure cap, this Sample not only ensure that the close connection of high voltage cable and electrode, but also the electric discharge of junction is prevented to interfere.Fastening nut is to fixation High-field electrode.

Simultaneously as devise the adjustable precise sliding rail being connect with high-field electrode holder, to accurately control electrode with The distance between sample facilitates experimenter to control height parameter and carries out contrast experiment.Preferably, high-field electrode front end can be used Conical design can preferably simulate the discharge electric field of needle to board electrode, reach experiment purpose.

Further, the PC host computers by communication module respectively with high-pressure modular, two-dimensional slipway motion-control module It is communicated to connect with data acquisition module；The PC host computers receive data acquisition module data by communication module and are sent to It controls electrometer probe acquisition and measures charge instruction；The PC host computers control high-voltage electricity by communications module instructions high-pressure modular Pole output waveform voltage；The PC host computers send movement instruction control by communication module to two-dimensional slipway motion-control module Two axis move slide unit movement.

Due to using above-mentioned setting, control of the PC host computers for total system is realized, common programming can be passed through The automatic running of control system, measures the purpose of charge at electric discharge, greatly improves convenience, compared to the prior art technology Easy to operate, motion control is accurate；The data of acquisition can be handled in real time, and by the software of PC host computers to data Post-processing and drawing being capable of intuitive showing material surface charge distribution situations.

Further, it further includes transparent isolation cabinet, transparent isolation cabinet setting two axis move slide unit, The measurement outside of dielectric sample mount, electrometer probe bracket and high-field electrode holder composition.

Due to using above-mentioned setting, entire measuring device to be positioned in transparent isolation cabinet, it is ensured that the safety of experimenter, Ensure that the accuracy of test reduces external environment interference simultaneously.

Particularly, the surface of the dielectric material surface charge self-operated measuring unit of the two axis slide unit is utilized as described above Charge measurement method, includes the following steps：

Step 1, PC host computers generate triggering waveform, and control high-field electrode by communications module instructions high-pressure modular and apply The voltage of the waveform, the high-field electrode discharge to the dielectric sample in dielectric sample mount；

Step 2, after waiting for that high-field electrode discharges to dielectric sample, PC host computers pass through communications module instructions two-dimensional slipway The movement slide unit movement of two axis of moving control module for controlling is to drive the dielectric sample mount to be moved to below high-field electrode Electrometer probe lower section；

Step 3, PC host computers continue through the movement of two axis of communications module instructions two-dimensional slipway moving control module for controlling and slide Platform drives dielectric sample mount to carry out Z-shaped scanning motion below electrometer probe;

Step 4, Z-shaped scanning motion is carried out below electrometer probe simultaneously, PC host computers in dielectric sample mount It controls electrometer probe measurement dielectric specimen surface charge by communications module instructions data acquisition module and receives data and adopt Collect module data；

Step 5, after acquisition terminates, PC host computers handle collected dielectric specimen surface charge data, And three-dimensional drawing is carried out, generate report；

Step 6, tool reset.

In above-mentioned measuring process, PC host computers generate the arbitrary triggering waveform of a needs first, and control high pressure Module applies high-field electrode the high voltage of the waveform；After waiting for that high-field electrode discharges to dielectric substance, two-dimensional slipway movement Control module controls two axis and moves slide unit, allows dielectric substance to be moved to electrometer probe lower section from high-field electrode lower part, then PC host computers continue through two axis of communications module instructions two-dimensional slipway moving control module for controlling movement slide unit and drive dielectric examination Sample holder carries out Z-shaped scanning motion below electrometer probe；When dielectric substance is moved to below probe, while on PC Position machine will control data collecting module collected data.

It is specifically configured to, computer host computer starts first, communication module is connected to by usb serial communications, by being based on Movement locus and movement velocity that two axis move slide unit is arranged in the graphic interface of Qt exploitations, while being arranged one for amplifying And to discharge waveform that sample discharges.

Subsequent movement locus instruction is sent to, motion controller solution reading instruction, and specific frequency is exported in corresponding pin The level of pulse and specific voltage.The pulse frequency that two axis movement slide unit is exported according to motion controller realizes different turn Speed, and according to different level height, realize the positive and negative rotation of motor.To accurately control dielectric substance from high-field electrode lower part It is moved to electrometer probe lower section, then PC host computers continue through communications module instructions two-dimensional slipway moving control module for controlling Two axis move slide unit and dielectric sample mount are driven to carry out Z-shaped scanning motion below electrometer probe.

Digital signal is converted to by ad in the discharge waveform generated among the above, is transmitted to high-pressure modular, FPGA will be digital Signal is reduced to analog signal by da conversions, and by recurrence average filtering algorithm, keeps signal smooth continuous, input Trek 30/20 power amplifier, amplitude is amplified 3000 times, and waveform is constant.Motion controller is in delay idle state at this time.

After electric discharge terminates, power amplifier is distally automatically closed, motion controller controls two axis movement slide unit and drives examination Sample moves to electrometer probe lower section, starts zigzag scan, while host computer automatically opens data function, data collecting card with 250MHz sample rates are started to work, and pass data back computer in real time.Acquisition terminate after, upper computer software first to data into Row pretreatment, is detected data abnormal point first with Clustering Model, handles, and then uses " apparent electricity to normal data Lotus method " carries out the inverting conversion between current potential to charge.At the end of finally to be scanned, the movement of PC PC control two-dimensional slipways Initial position is restored, while software is automatically handled data in PC host computers, calculates dielectric surface distribution of charges, and Drawing three-dimensional image.

Description of the drawings

Fig. 1 is the overall schematic of the utility model；

Fig. 2 is dielectric sample mount and high-field electrode support schematic diagram；

Fig. 3 is electrostatic probe bracket vertical view；

Fig. 4 is that schematic diagram is arranged in electrostatic probe bracket in detail；

It is marked in figure：1, transparent isolation cabinet；2, two axis move slide unit；3, dielectric sample mount；4, electrometer is popped one's head in Holder；5, high-field electrode holder；6, the first metallic support；7, data acquisition module；8, high-pressure modular；9, two-dimensional slipway movement control Molding block；10, communication module；11, PC host computers；12, metal partion (metp)；13, Teflon insulating barrier；14, circular copper plate electrode； 15, jig main body；16, probe aperture；17, fastening thread；18, the equal pressure cap of dome-type；19, fastening nut；20, insulating pad；21、 High-field electrode；22, the first accurate sliding rail；23, high voltage cable；161, electrometer is popped one's head in；201, bottom moves slide unit；202, top Move slide unit；221, the second accurate sliding rail；601, the second metallic support.

Specific implementation mode

For that can further appreciate that the utility model content, feature and effect of the utility model, the following examples are hereby given, and Cooperation attached drawing is explained in detail the structure of utility model.

Embodiment 1：As shown in Figures 1 to 4,

A kind of dielectric material surface charge self-operated measuring unit based on two axis slide units, it includes that two axis move slide unit 2, The two axis movement slide unit 2 is connected with dielectric sample mount 3, and the two axis movement slide unit 2 can drive dielectric sample mount 3 It planar moves, the electrometer probe bracket 4 and high-field electrode branch of 3 plane of movement upper space of the dielectric sample mount Frame 5；The survey that the two axis movement slide unit 2, dielectric sample mount 3, electrometer probe bracket 4 are formed with high-field electrode holder 5 Transparent isolation cabinet 1 is additionally provided with outside quantity space.

Particularly, it further includes PC host computers 11, and the PC host computers 11 are visited with two axis movement slide unit 2, electrometer respectively Head bracket 4 and high-field electrode holder 5 communicate to connect and control the two axis movement slide unit 2, electrometer probe bracket 4 and high-voltage electricity Pole holder 5 carries out surface charge detection to the sample in dielectric sample mount 3.

Preferably, following setting can also be arranged in two axis movement slide unit 2：The two axis movement slide unit 2 includes bottom It moves slide unit 201 and the overlap joint of top movements slide unit 202 is constituted, the two axis movement slide unit 2 passes through two-dimensional slipway motion control mould Block 9 is communicated to connect with the PC host computers 11, and two axis movement slide unit 2 described in 11 programming Control of PC host computers is planar transported It is dynamic.

Preferably, to ensure that test dielectric sample reduces electrode edge electric field distortion in the process, make test result more Added with practical significance, the dielectric sample mount 3 includes being successively set on the metal partion (metp) on 202 top of top movements slide unit 12, Teflon insulating barrier 13 and circular copper plate electrode 14, the circular copper plate electrode 14 are grounded.

Preferably, the electrometer probe bracket 4 includes the jig main body 15 of plate, and 15 middle part of the jig main body opens up There are the probe aperture 16 for placing electrometer probe 161,16 side wall of the probe aperture to be provided with fastening thread 17 to adjust the spy 16 space of pin hole and then locking electrometer probe 161；The jig main body 15 is arranged by the first metallic support 6 to be situated between in the electricity 3 plane of movement upper space of matter sample mount is also associated with the first precision between the jig main body 15 and the first metallic support 6 Sliding rail 22 is to adjust the electrometer probe bracket 4 and 3 distance of dielectric sample mount；The jig main body 15 is exhausted by Teflon Edge thin plate is made.

Particularly, further include that the electrometer being detachably connected with probe aperture 16 is popped one's head in above-mentioned electrometer probe bracket 4 161, the electrometer probe 161 is communicated to connect by data acquisition module 7 and PC host computers 11 and sends out charge measurement data It send to PC host computers 11.

Preferably, the high-field electrode holder 5 includes insulating pad 20, perforative on the insulating pad 20 to be provided with height Piezoelectricity pole 21,21 lower part of the high-field electrode is discharge end and the close dielectric sample mount 3, the high-field electrode 21 push up Portion is provided with the equal pressure cap 18 of dome-type, and the high-field electrode 21 is connect with insulating pad 20 by fastening nut 19；The insulation Backing plate 20 is arranged by the second metallic support 601 in 3 plane of movement upper space of the dielectric sample mount, the felt pad The second accurate sliding rail 221 is also associated between plate 20 and the second metallic support 601 to adjust high-field electrode 21 and dielectric sample 3 distance of holder.

Further, the high-field electrode 21 is communicated to connect by high-pressure modular 8 and PC host computers 11 and receives the PC 11 signal of host computer discharges to dielectric sample；The equal pressure cap 18 of dome-type at 21 top of the high-field electrode passes through high voltage cable 23 It is connect with high-pressure modular 8.

In the technical solution comprising all technical characteristics, following setting is particularly done：The PC host computers 11 pass through logical Believe that module 10 is communicated to connect with high-pressure modular 8, two-dimensional slipway motion-control module 9 and data acquisition module 7 respectively；On the PC Position machine 11 receives 7 data of data acquisition module by communication module 10 and is sent to 161 acquisition of control electrometer probe and measures Charge instructs；The PC host computers 11 instruct high-pressure modular 8 to control 21 output waveform voltage of high-field electrode by communication module 10； The PC host computers 11 send movement instruction to two-dimensional slipway motion-control module 9 by communication module 10 and control two axis movement cunning Platform 2 moves.

Embodiment 2：As shown in Figures 1 to 4, a kind of dielectric material surface charge automatic measurement using the two axis slide unit The surface charge measurement method of device, it includes the following steps：

Step 1, PC host computers 11 generate triggering waveform, and instruct high-pressure modular 8 to control high-voltage electricity by communication module 10 Pole 21 applies the voltage of the waveform, and the high-field electrode 21 discharges to the dielectric sample in dielectric sample mount 3；

Step 2, after waiting for that high-field electrode 21 discharges to dielectric sample, PC host computers 11 instruct two by communication module 10 It ties up slide unit motion-control module 9 and controls the movement movement of slide unit 2 of two axis to drive the dielectric sample mount 3 from high-field electrode 21 Lower section is moved to 161 lower section of electrometer probe；

Step 3, PC host computers 11 continue through communication module 10 and instruct 9 control two axis fortune of two-dimensional slipway motion-control module Dynamic slide unit 2 drives dielectric sample mount 3 to carry out Z-shaped scanning motion below electrometer probe 161;

Step 4, Z-shaped scanning motion is carried out below electrometer probe 161 simultaneously, in dielectric sample mount 3 on PC Position machine 11 controls electrometer probe 161 by 10 director data acquisition module 7 of communication module and measures dielectric specimen surface charge And receive 7 data of data acquisition module；

Step 5, acquisition terminate after, PC host computers 11 to collected dielectric specimen surface charge data at Reason, and three-dimensional drawing is carried out, generate report；

Step 6, tool reset.

Claims (9)

1. a kind of dielectric material surface charge self-operated measuring unit based on two axis slide units, it is characterised in that：It is transported including two axis Dynamic slide unit（2）, the two axis movement slide unit（2）It is connected with dielectric sample mount（3）, the two axis movement slide unit（2）Energy band Dynamic dielectric sample mount（3）Planar move；It further includes being arranged in the dielectric sample mount（3）On plane of movement The electrometer probe bracket in portion space（4）With high-field electrode holder（5）；It further includes PC host computers（11）, the PC host computers （11）Respectively slide unit is moved with two axis（2）, electrometer probe bracket（4）With high-field electrode holder（5）It communicates to connect and controls institute State two axis movement slide unit（2）, electrometer probe bracket（4）With high-field electrode holder（5）To dielectric sample mount（3）On examination Sample carries out surface charge detection.

2. a kind of dielectric material surface charge self-operated measuring unit based on two axis slide units as described in claim 1, feature It is：Two axis moves slide unit（2）Slide unit is moved including bottom（201）With top movements slide unit（202）Overlap joint is constituted, described Two axis move slide unit（2）Pass through two-dimensional slipway motion-control module（9）With the PC host computers（11）It communicates to connect, on the PC Position machine（11）Two axis described in programming Control move slide unit（2）Planar move.

3. a kind of dielectric material surface charge self-operated measuring unit based on two axis slide units as claimed in claim 2, feature It is：The dielectric sample mount（3）Including being successively set on top movements slide unit（202）The metal partion (metp) on top（12）、 Teflon insulating barrier（13）With circular copper plate electrode（14）, the circular copper plate electrode（14）Ground connection.

4. a kind of dielectric material surface charge self-operated measuring unit based on two axis slide units as claimed in claim 3, feature It is：The electrometer probe bracket（4）Jig main body including plate（15）, the jig main body（15）Middle part offers confession Place electrometer probe（161）Probe aperture（16）, the probe aperture（16）Side wall is provided with fastening thread（17）To adjust State probe aperture（16）Space and then locking electrometer probe（161）；The jig main body（15）Pass through the first metallic support（6）If It sets in the dielectric sample mount（3）Plane of movement upper space, the jig main body（15）With the first metallic support（6）It Between be also associated with the first accurate sliding rail（22）To adjust the electrometer probe bracket（4）With dielectric sample mount（3）Distance； The jig main body（15）It is made of Teflon insulating thin.

5. a kind of dielectric material surface charge self-operated measuring unit based on two axis slide units as claimed in claim 4, feature It is：Further include and probe aperture（16）The electrometer probe being detachably connected（161）, the electrometer probe（161）Pass through number According to acquisition module（7）With PC host computers（11）It communicates to connect and charge measurement data is sent to PC host computers（11）.

6. a kind of dielectric material surface charge self-operated measuring unit based on two axis slide units as described in claim 1 to 5 is any, It is characterized in that：The high-field electrode holder（5）Including insulating pad（20）, the insulating pad（20）It is above perforative to be provided with High-field electrode（21）, the high-field electrode（21）Lower part is discharge end and the close dielectric sample mount（3）, the high pressure Electrode（21）Top is provided with the equal pressure cap of dome-type（18）, the high-field electrode（21）With insulating pad（20）Pass through fastening nut （19）Connection；The insulating pad（20）Pass through the second metallic support（601）It is arranged in the dielectric sample mount（3）Movement Plane upper space, the insulating pad（20）With the second metallic support（601）Between be also associated with the second accurate sliding rail（221） To adjust high-field electrode（21）With dielectric sample mount（3）Distance.

7. a kind of dielectric material surface charge self-operated measuring unit based on two axis slide units as claimed in claim 6, feature It is：The high-field electrode（21）Pass through high-pressure modular（8）With PC host computers（11）It communicates to connect and receives the PC host computers （11）Signal discharges to dielectric sample；The high-field electrode（21）The equal pressure cap of dome-type at top（18）Pass through high voltage cable （23）With high-pressure modular（8）Connection.

8. a kind of dielectric material surface charge self-operated measuring unit based on two axis slide units as claimed in claim 7, feature It is：The PC host computers（11）Pass through communication module（10）Respectively with high-pressure modular（8）, two-dimensional slipway motion-control module （9）And data acquisition module（7）Communication connection；The PC host computers（11）Pass through communication module（10）Receive data acquisition module （7）Data are simultaneously sent to control electrometer probe（161）Acquisition measures charge instruction；The PC host computers（11）Pass through communication Module（10）Instruct high-pressure modular（8）Control high-field electrode（21）Output waveform voltage；The PC host computers（11）Pass through communication Module（10）To two-dimensional slipway motion-control module（9）It sends movement instruction and controls two axis movement slide unit（2）Movement.

9. a kind of dielectric material surface charge self-operated measuring unit based on two axis slide units as claimed in claim 8, feature It is：It further includes transparent isolation cabinet（1）, the transparent isolation cabinet（1）Setting moves slide unit in two axis（2）, electricity Media samples holder（3）, electrometer probe bracket（4）With high-field electrode holder（5）The measurement outside of composition.