CN107942143A - A kind of experimental provision for measuring solid dielectric relative dielectric constant - Google Patents
A kind of experimental provision for measuring solid dielectric relative dielectric constant Download PDFInfo
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- CN107942143A CN107942143A CN201711351069.9A CN201711351069A CN107942143A CN 107942143 A CN107942143 A CN 107942143A CN 201711351069 A CN201711351069 A CN 201711351069A CN 107942143 A CN107942143 A CN 107942143A
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- 239000007787 solid Substances 0.000 title claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 14
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000005684 electric field Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005686 electrostatic field Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2617—Measuring dielectric properties, e.g. constants
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention belongs to dielectric constant measuring apparatus field, and disclose a kind of experimental provision for measuring solid dielectric relative dielectric constant.The device includes base, bottom crown, case, axle sleeve and shifting axle, bottom crown is arranged on base, shifting axle is T-shaped, T-shaped horizontal component is top crown, top crown is opposite with bottom crown to be arranged in parallel, T-shaped vertical axes partial outer face is provided with the screw thread coordinated with nut, nut rotates so that shifting axle moves up and down, and then adjust the spacing between upper bottom crown, wherein, the displacement of its vertical direction is limited in nut rotary course by limit element, limit element includes axle sleeve and case, axle sleeve is moved down for limiting nut, step position is provided with case, step position limits it with nut cooperation and moves up.By the present invention, the measurement error caused by the depth of parallelism between axis directly in rotary moving changes upper bottom crown is solved, simple in structure, manufacture cost is low, high certainty of measurement, and use scope is wide.
Description
Technical field
The invention belongs to dielectric constant measuring apparatus field, more particularly, to one kind measurement solid dielectric with respect to dielectric
The experimental provision of constant.
Background technology
Medium can produce charge inducing in extra electric field and weaken electric field, electric field and former extra electric field (vacuum in medium
In) ratio be relative dielectric constant, also known as permitivity, with frequency dependence, dielectric constant is relative dielectric constant and vacuum
Middle absolute dielectric constant product, if the material of high-k is put in the electric field, the intensity of electric field can have in dielectric
Considerable decline, since electrostatic screen field strength is always zero inside perfact conductor, therefore its dielectric constant is infinite.It is normal with respect to dielectric
Number, its value be equal to using predict material as medium with using made of vacuum as medium with the ratio between sized capacitor capacitance, the value
It is the characterization of material storage electric energy power, also referred to as relative permitivity, the relative dielectric constant under different materials different temperatures is different, profit
The capacitor of different performance specification or related element can be made with this characteristic.
Relative dielectric constant εrIt can be measured with electrostatic field with following manner：First between two pieces of pole plates for vacuum when
Wait the capacitance C of test capacitors0, then, electricity is measured after adding dielectric with same capacitance pole distance between plates but between pole plate
Hold Cx, then relative dielectric constant can be calculated with following formula
Relative dielectric constant is the physical parameter for reflecting dielectric substance polarization characteristic in electrostatic field, is insulated for weighing
Body stores the performance of electric energy, and the relative dielectric constant of different materials is different, and different performance specification can be made using this characteristic
Capacitor or related element, so as to be applied to scientific research and industrial every field, understand the physics of dielectric constant
Meaning and measuring principle, grasp the assay method of solid dielectric relative dielectric constant, are important interior in colleges and universities' science and engineering class experiment
Hold, however, the equipment of current Measuring Dielectric Constant is not suitable for the application environment in laboratory mostly, exist design it is unreasonable,
The shortcomings of measurement result is not accurate enough, have developed a kind of experiment dress of new measurement solid dielectric relative dielectric constant for this
Put.
The content of the invention
For the disadvantages described above or Improvement requirement of the prior art, the present invention provides one kind measurement solid dielectric with respect to dielectric
The experimental provision of constant, is designed by shifting axle and nut, compared with direct axis in rotary moving in the prior art, its object is to
Move up and down by rotating nuts shifting axle, so as to adjust the distance between bottom crown, thus solve due to direct
The technical problem of measurement error caused by the depth of parallelism between the upper bottom crown of axis change in rotary moving.
To achieve the above object, it is proposed, according to the invention, provide a kind of experiment dress for measuring solid dielectric relative dielectric constant
To put, it is characterised in that the device includes base, bottom crown, case, axle sleeve and shifting axle,
The base is the carrier of other elements, and the bottom crown is set on the base, and the shifting axle is T-shaped, the T
The horizontal component of type is top crown, and the top crown is opposite with the bottom crown to be arranged in parallel, the T-shaped vertical shaft portion appearance
Face is provided with the screw thread coordinated with nut, which rotates so that the shifting axle moves up and down, and then adjusts the pole up and down
Spacing between plate, wherein, make it that the displacement of vertical direction not occur by limit element in the nut rotary course, the limit
Bit unit includes being arranged on the axle sleeve and case below the nut, and the axle sleeve is sleeved in the vertical axes of the shifting axle, uses
Moved down in limiting the nut, step position be provided with the case, the step position coordinate with the nut limit its to
Upper movement；
In addition, being connected to conducting wire on the upper bottom crown, it is connected by the conducting wire with extraneous measuring instrument.
It is further preferred that cover board is provided with the base, for placing the case.
It is further preferred that the material of the base, cover board and case preferably uses insulating materials.
It is further preferred that the vertical axes outer surface setting of the shifting axle is fluted, this is provided with the cover board
The boss that groove coordinates, the verticality moved up and down for ensuring the T-shaped component.
It is further preferred that being provided with two wiring holes on the cover board, it is connected respectively with the conducting wire.
It is further preferred that through hole is provided with above the case, for placing amesdial measurement head.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
1st, the present invention is by using mobile shaft design so that and the vertical axes of top crown and the shifting axle are an entirety,
Compared with prior art, top crown and the error in vertical axes assembling process are reduced, so that change the levelness of top crown, and then
The depth of parallelism in change between bottom crown, influences the accuracy of measurement result；
2nd, the present invention is by using the cooperation of shifting axle and nut, and in rotary course, nut and shifting axle will be sent out nut
Raw relative motion, by limiting moving up and down for nut so that shifting axle moves up and down without rotating, and does not change upper bottom crown
The depth of parallelism；Further, since shifting axle does not rotate so that relative displacement does not occur on circumference between upper bottom crown, does not occur
Rotate so that equipment ensure that the system environments of whole measurement process is constant, compared with original state, subtract in measurement process
Few variable, improves measurement accuracy；
3rd, the present invention increases the adjustable distance between bottom crown by using non-rotary mobile shaft design, because
And the area of section of bottom crown is set according to the sectional area of object under test, influenced from the size of object under test,
Expand use scope；
4th, the present invention is moved up and down by using shifting axle to change the distance of upper bottom crown, on using amesdial measurement
Pole plate movement apart from when, compared with the experimental provision of existing Measuring Dielectric Constant, effectively avoid the problem of idle running is poor；
5th, experimental provision provided by the invention is simple in structure, and manufacture cost is low, and easy to operate, high certainty of measurement, uses model
Enclose wide.
Brief description of the drawings
Fig. 1 is the experimental provision structure diagram constructed by preferred embodiment according to the invention.
In all of the figs, identical reference numeral is used for representing identical element or structure, wherein：
1- base 2- cover board 3- case 4- axle sleeve 5- nut 6- amesdial measurement head 7- amesdial 8- shifting axles
9,10- binding posts 11,12- conducting wire 13- footing 14- top crown 15- bottom crown 16- amesdials
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Not forming conflict each other can be mutually combined.
Fig. 1 is the experimental provision structure diagram constructed by preferred embodiment according to the invention, as shown in Figure 1, a kind of
The experimental provision of solid dielectric relative dielectric constant is measured, which includes base 1, bottom crown 15, shifting axle 8, nut 5, axis
Set 4, cover board 2, case 3, conducting wire 11,12 and binding post 9,10.Base 1 is U-shaped, and bottom crown 15 is arranged in base 1, cover board 2
The top of base 1 is arranged on, is connected with base, shifting axle 8 is T-shaped, and T-shaped horizontal component is top crown 14, and top crown 14 is with
Pole plate 15 is opposite to be arranged in parallel, and is used to place object under test, T-shaped vertical shaft portion appearance between top crown 14 and bottom crown 15
Face is provided with external screw thread, and nut 5 coordinates with external screw thread, and during rotating nuts, the up and down motion due to nut is limited, so that
Shifting axle moves up and down, and then adjusts the distance between upper bottom crown, step position is provided with case 3, the step position and nut
Coordinate, limit the upward movement of nut, be provided with axle sleeve 4 below nut, axle sleeve 4 is sleeved in T-shaped vertical axes, and case 3 is set
Put on cover board 2, bottom crown 15 and shifting axle 8 are made of aluminium alloy, and cross section is circular, area equation, cover board 2, bottom
Seat 1 and case 3 are insulating materials, and the top of case 3 is provided with through hole, and the measurement head of amesdial is erected through the through hole and T-shaped
D-axis tip contact, the thickness of determinand is obtained by measuring the difference in height before and after clamping determinand；Connect respectively on upper bottom crown
Conducting wire 11,12 is connected to, conducting wire is connected with binding post 9,10, extraneous measuring instrument, such as universal bridge, by wire column and up and down
Pole plate turns on, multiple footing 13 are provided with below base, are used to support whole device.
The measurement that this experimental provision is explained below uses process.
Rotating nut 5, it is zero to make top crown 14 and the spacing of bottom crown 15, presses the zero key of amesdial, rotating nut
5, make top crown, 14 rise the height slightly larger than measured material thickness, are placed in parallel into measured material, rotating nut 5 makes top crown
14 decline and simultaneously compress measured material, read amesdial registration at this time and record, repeat the step 5 time, make top crown every time, and 14
Measured material all is rotated certain angle as axis using center line after rising to compress again, the amesdial registration of 5 times is recorded respectively, puts down
Average is the thickness of measured material, universal bridge is connected by binding post with experimental provision, rotating nut 5 omits top crown 14
Micro- rising, takes out measured material, and reading is recorded after universal bridge registration stabilization, while writes down amesdial registration at this time, protects
It is motionless to hold nut 5, measured material is placed in parallel into top crown again, between 14 and bottom crown 15, treats that universal bridge registration is stablized
After record reading.Experimental data substitution formula scales are obtained to the relative dielectric constant of measured medium.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., should all include
Within protection scope of the present invention.
Claims (6)
1. it is a kind of measure solid dielectric relative dielectric constant experimental provision, it is characterised in that the device include base (1), under
Pole plate (15), case (3), axle sleeve (4) and shifting axle (8),
The base (1) is the carrier of other elements, and the bottom crown (15) is set on the base, and the shifting axle (8) is in T
Type, the T-shaped horizontal component are top crown (14), and the top crown is opposite with the bottom crown (15) to be arranged in parallel, described T-shaped
Vertical axes partial outer face is provided with the screw thread coordinated with nut (5), which rotates so that the shifting axle (8) is transported up and down
It is dynamic, and then the spacing between the upper bottom crown is adjusted, wherein, limited in nut (5) rotary course by limit element
Its vertical direction is subjected to displacement, which includes being arranged on the axle sleeve (4) and case (3) below the nut, the axis
It is sleeved in the vertical axes of the shifting axle, is moved down for limiting the nut, step is provided with the case (3)
Position, the step position limit it with nut cooperation and move up；
In addition, being connected to conducting wire (11,12) on the upper bottom crown, it is connected by the conducting wire with extraneous measuring instrument.
2. a kind of experimental provision for measuring solid dielectric relative dielectric constant as claimed in claim 1, it is characterised in that described
Cover board (2) is provided with base, for placing the case (3).
A kind of 3. experimental provision for measuring solid dielectric relative dielectric constant as claimed in claim 1 or 2, it is characterised in that
The material of the base (1), cover board (2) and case (3) preferably uses insulating materials, the bottom crown (15) and shifting axle (8)
Select conductive material.
4. such as a kind of experimental provision of measurement solid dielectric relative dielectric constant of claim 1-3 any one of them, its feature
It is, the vertical axes outer surface setting of the shifting axle (8) is fluted, and the convex of groove cooperation is provided with the cover board
Platform, the verticality moved up and down for ensuring the T-shaped component.
5. such as a kind of experimental provision of measurement solid dielectric relative dielectric constant of claim 1-4 any one of them, its feature
It is, two binding posts (9,10) is provided with the cover board, are connected respectively with the conducting wire.
6. such as a kind of experimental provision of measurement solid dielectric relative dielectric constant of claim 1-5 any one of them, its feature
It is, through hole is provided with above the case (3), for placing amesdial measurement head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711351069.9A CN107942143B (en) | 2017-12-15 | 2017-12-15 | Experimental device for measure solid medium relative dielectric constant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711351069.9A CN107942143B (en) | 2017-12-15 | 2017-12-15 | Experimental device for measure solid medium relative dielectric constant |
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| Publication Number | Publication Date |
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| CN107942143A true CN107942143A (en) | 2018-04-20 |
| CN107942143B CN107942143B (en) | 2024-02-06 |
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| CN201711351069.9A Active CN107942143B (en) | 2017-12-15 | 2017-12-15 | Experimental device for measure solid medium relative dielectric constant |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285857A (en) * | 2019-07-11 | 2019-09-27 | 深圳市南科燃料电池有限公司 | A kind of fuel cell detection device |
| CN111174962A (en) * | 2020-01-08 | 2020-05-19 | 哈尔滨工业大学 | Capacitance type three-dimensional force sensor with adjustable measuring range |
| CN112394237A (en) * | 2019-08-13 | 2021-02-23 | 神讯电脑(昆山)有限公司 | Device and method for testing constant current of inductive element |
| CN112540234A (en) * | 2020-11-25 | 2021-03-23 | 华中科技大学 | Dielectric constant measuring jig and measuring method based on parallel plate capacitance method |
| CN113985142A (en) * | 2021-12-30 | 2022-01-28 | 昆山龙雨智能科技有限公司 | Measuring device for dielectric constant and using method thereof |
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| CN1743863A (en) * | 2005-09-29 | 2006-03-08 | 西安交通大学 | High-precision adjustable gap contactless trielectrode |
| CN203165309U (en) * | 2013-03-20 | 2013-08-28 | 浙江农林大学天目学院 | Experimental device for measuring capacitance and air dielectric constant |
| CN105606903A (en) * | 2015-12-17 | 2016-05-25 | 国家电网公司 | Clamping tool for measuring dielectric constant of solid insulating material |
| CN207882346U (en) * | 2017-12-15 | 2018-09-18 | 华中科技大学 | A kind of experimental provision measuring solid dielectric relative dielectric constant |
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2017
- 2017-12-15 CN CN201711351069.9A patent/CN107942143B/en active Active
Patent Citations (4)
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| CN1743863A (en) * | 2005-09-29 | 2006-03-08 | 西安交通大学 | High-precision adjustable gap contactless trielectrode |
| CN203165309U (en) * | 2013-03-20 | 2013-08-28 | 浙江农林大学天目学院 | Experimental device for measuring capacitance and air dielectric constant |
| CN105606903A (en) * | 2015-12-17 | 2016-05-25 | 国家电网公司 | Clamping tool for measuring dielectric constant of solid insulating material |
| CN207882346U (en) * | 2017-12-15 | 2018-09-18 | 华中科技大学 | A kind of experimental provision measuring solid dielectric relative dielectric constant |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285857A (en) * | 2019-07-11 | 2019-09-27 | 深圳市南科燃料电池有限公司 | A kind of fuel cell detection device |
| CN112394237A (en) * | 2019-08-13 | 2021-02-23 | 神讯电脑(昆山)有限公司 | Device and method for testing constant current of inductive element |
| CN112394237B (en) * | 2019-08-13 | 2024-06-11 | 神讯电脑(昆山)有限公司 | Device and method for testing constant current of inductance element |
| CN111174962A (en) * | 2020-01-08 | 2020-05-19 | 哈尔滨工业大学 | Capacitance type three-dimensional force sensor with adjustable measuring range |
| CN112540234A (en) * | 2020-11-25 | 2021-03-23 | 华中科技大学 | Dielectric constant measuring jig and measuring method based on parallel plate capacitance method |
| CN112540234B (en) * | 2020-11-25 | 2021-10-08 | 华中科技大学 | Dielectric constant measuring jig and measuring method based on parallel plate capacitance method |
| CN113985142A (en) * | 2021-12-30 | 2022-01-28 | 昆山龙雨智能科技有限公司 | Measuring device for dielectric constant and using method thereof |
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| Publication number | Publication date |
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| CN107942143B (en) | 2024-02-06 |
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