CN106841697A - A kind of monoblock type cement-based material ac impedance measurement fixture - Google Patents
A kind of monoblock type cement-based material ac impedance measurement fixture Download PDFInfo
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- CN106841697A CN106841697A CN201710007417.4A CN201710007417A CN106841697A CN 106841697 A CN106841697 A CN 106841697A CN 201710007417 A CN201710007417 A CN 201710007417A CN 106841697 A CN106841697 A CN 106841697A
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- shielding
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
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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
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- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention belongs to cement-based material ac impedance measurement technical field, specifically related to a kind of monoblock type cement-based material ac impedance measurement fixture, including shielding platform, shielding box, adjustable stand, upper and lower adjusting bracket, test lead, front and rear adjustable track and left and right adjusting track, shielding box sets BNC connector, adjustable stand includes adjustable pole, adjustable pole includes upper rack posts, lower fulcrum bar and locking member, test lead includes spring clip, test electrode, spring and bolt, test electrode is electrically connected with BNC connector, front and rear adjustable track is longitudinally located at the left and right two ends of shielding platform, left and right adjusting track laterally intersects vertically located at the rear and front end of shielding platform and with front and rear adjustable track, the lower slide of upper and lower adjusting bracket is connected on front and rear adjustable track.The purpose of the present invention is：Solve the problems, such as that existing cement-based material ac impedance measurement means have more ectocine, timing lead location and actual test position and are difficult to keep completely the same etc. many.
Description
Technical field
The invention belongs to cement-based material ac impedance measurement technical field, and in particular to a kind of monoblock type cement-based material
Ac impedance measurement fixture.
Background technology
AC impedance is just widely used in the test such as cement-based material micro-structural, durability from last century the eighties,
The change of micro-parameter can be just symbolized because cement-based material needs frequency higher, therefore, usually select in testing super
The frequency of 10MHz is crossed to quantitative analysis, the test frequency for qualitative analysis often selects more than 100MHz.However, when survey
When examination frequency is higher, high-frequency data can distortion it is more serious, show as that data are in disorder or negative value occur, this is because the external world is spuious
What the influence of impedance caused.At present, the means of testing of cement-based material AC impedance is less, and some people is using BNC connector, general
Admittance line and crocodile clip are tested, and the influence of extraneous impedance is eliminated with reference to data correction program, what this means of testing was produced
Stray impedance is larger, and correction program can not be completely eliminated high-frequency data distortion, and timing lead location is with actual test position very
It is hard to keep completely the same, the situation that crocodile clip is contacted with electrode slice every time is difficult to be consistent.Also it has been proposed that using bnc interface
Shielding box is embedded in, shielding box inserts two wires, and wire connection crocodile clip eliminates the shadow of extraneous impedance with reference to correction program
Ring, this means of testing has many deficiencies：Insertion lead location may produce larger capacitance, and external wire inductance still has
Considerable influence, timing lead location is difficult to keep completely the same with actual test position, and crocodile clip is contacted with electrode slice every time
Situation be difficult to be consistent.
The content of the invention
The purpose of the present invention is：A kind of monoblock type cement-based material ac impedance measurement fixture is aimed to provide, is used to solve
There is more ectocine, timing lead location and actual test position very in existing cement-based material ac impedance measurement means
Many problems such as be hard to keep completely the same.
To realize above-mentioned technical purpose, the technical solution adopted by the present invention is as follows：A kind of monoblock type cement-based material exchange
Testing impedance fixture, including it is shielding platform, shielding box, adjustable stand, two groups of upper and lower adjusting bracket, two groups of test lead, front and rear
Adjustable track and left and right adjusting track, described shielding box is located at the front end lower section of shielding platform, described shielding platform and screen
Cover box to be integrally formed, the front end face of the shielding box is provided with four BNC connectors, and described adjustable stand includes adjustable pole four
Group, described four groups of adjustable poles are affixed near four angles of shielding platform lower surface, described adjustable pole include upper rack posts,
Lower fulcrum bar and locking member, described upper rack posts are hollow structure, and the upper end of the lower fulcrum bar is set in upper rack posts and by lock
Tight part is locked, and two groups of described test leads are slidably connected in about two groups adjusting brackets respectively, described test lead bag
Spring clip, test electrode, spring and bolt are included, described test electrode is clamped in the retaining part of spring clip and by bolt lock
Fasten, described spring is fastened on the retaining part rear of spring clip, described test electrode is electrically connected with BNC connector, institute
Longitudinally located at the left and right two ends of shielding platform, described left and right adjusting track is laterally located at shielding platform to the front and rear adjustable track stated
Rear and front end and intersected vertically with front and rear adjustable track, the lower slide of the upper and lower adjusting bracket is connected to front and rear buffer rail
On road.
Using the invention of above-mentioned technical proposal, during test, four BNC connectors are connected in alternating current impedance instrument, regulation can
Adjust the height and level of stand, it is ensured that the height and level of shielding platform meet requirement, according to the size of sample dimensions, pass through
Upper and lower adjusting bracket, left and right adjusting track and the upper and lower of front and rear adjustable track regulation test lead, left and right and front and back position, it is ensured that survey
Examination electrode and test specimen test surfaces center alignment, by spring-compressed to maximum, are bolted test electrode, in two tests
One layer of conducting resinl of uniform application is distinguished on electrode, test specimen is placed in the middle of test lead, unclamp bolt, slowly allow test electrode to connect
Test specimen two ends are touched, after contact fully, bolt is fixed, you can the AC impedance of test test specimen, after the completion of test, unclamp one end spiral shell
Bolt, outer drawing test electrode takes out test specimen, then test electrode pine to test original place is fixed, the breaking alternating current impedance instrument of test.So
Structure design, the test conductor length that is electrically connected with BNC connector of electrode can shorten as far as possible, the inductance that conductor length causes
Influence can reduce as far as possible；Can ensure that same size test specimen has identical contact, contact closely knit, reduce contact to handing over
The influence of flow impedance test；Test electrode easily aligns with test specimen center, it is possible to decrease test specimen edge effect is to ac impedance measurement
Influence；Lead location is completely the same when can ensure timing lead location with actual test, improves correction accuracy.
Further, the front end of the shielding platform is provided with horizontal bubble and baffle plate, and described baffle plate is with shielding platform integrally
Shaping.
The front end of the shielding platform is provided with horizontal bubble and baffle plate, and described baffle plate is integrally formed with shielding platform, this
The structure design of sample, it can be ensured that whole fixture quick regulation level, greatly improves operating efficiency.
Further, four described BNC connectors are arranged in two rows two and are neatly distributed on the front end face of shielding box.
Four described BNC connectors are arranged in two rows two and are neatly distributed on the front end face of shielding box, such structure design,
Not using only more facilitate, and when may further ensure that timing lead location with actual test lead location it is consistent
Property.
Advantage of the invention：
(1) influence of the stray impedance of BNC connector and wire has been eliminated as much as；
(2) uniformity of lead location when can accurately keep test specimen testing impedance and stray impedance to test, test specimen impedance is surveyed
Stray impedance timing during examination will not introduce the stray impedance of new type；
(3) can be used for the ac impedance measurement of all kinds of cement-based material test specimens of different size sample dimensions；
(4) when cement-based material sample dimensions are constant, by the setting of spring force, can keep testing electrode and test specimen
Contact is constant and maintains rational level, and contact impedance is preferably minimized；
(5) cost is very cheap.
Brief description of the drawings
The nonlimiting examples that the present invention can be given by accompanying drawing are further illustrated；
Fig. 1 is that a kind of front view structure of the embodiment of monoblock type cement-based material ac impedance measurement fixture of the invention is illustrated
Figure；
Fig. 2 is a kind of left view structural representation of the embodiment of monoblock type cement-based material ac impedance measurement fixture of the invention
Figure；
Fig. 3 is that a kind of plan structure of the embodiment of monoblock type cement-based material ac impedance measurement fixture of the invention is illustrated
Figure.
Main element symbol description is as follows：
1. shielding platform, 2. shielding box, 3.BNC joints, 4. upper rack posts, 5. lower fulcrum bar, 6. locking member, 7. regulation branch up and down
Frame, 8. spring clip, 9. tests electrode, 10. spring, 11. bolts, adjustable track before and after 12., 13. left and right adjusting tracks, 14. water
Flat bubble, 15. baffle plates
Specific embodiment
In order that those skilled in the art may be better understood the present invention, with reference to the accompanying drawings and examples to this hair
Bright technical scheme is further illustrated.
As shown in Figure 1, Figure 2 and Figure 3, a kind of monoblock type cement-based material ac impedance measurement fixture of the invention, including
Shielding platform 1, shielding box 2, adjustable stand, 7 two groups of upper and lower adjusting bracket, two groups of test lead, front and rear adjustable track 12 and a left side
Right adjustable track 13, shielding box 2 is integrally formed located at the front end lower section of shielding platform 1, shielding platform 1 and shielding box 2, shielding box
2 front end face is provided with four BNC connectors 3, and four BNC connectors 3 are arranged in two rows two and are neatly distributed on the front end face of shielding box 2,
Adjustable stand includes four groups of adjustable pole, and four groups of adjustable poles are affixed near four angles of the lower surface of shielding platform 1, adjustable supporting
Bar includes upper rack posts 4, lower fulcrum bar 5 and locking member 6, and upper rack posts 4 are hollow structure, and the upper end of lower fulcrum bar 5 is set in upper rack posts 4
And be locked by locking member 6, two groups of test leads are slidably connected in about two groups adjusting brackets 7 respectively, and test lead includes
Spring clip 8, test electrode 9, spring 10 and bolt 11, test electrode 9 are clamped in the retaining part of spring clip 8 and by bolt 11
It is locked, spring 10 is fastened on the retaining part rear of spring clip 8, test electrode 9 is electrically connected with BNC connector 3, front and rear regulation
Located at the left and right two ends of shielding platform 1, left and right adjusting track 13 is laterally located at the rear and front end of shielding platform 1 simultaneously to the longitudinal direction of track 12
Intersected vertically with front and rear adjustable track 12, the lower slide of upper and lower adjusting bracket 7 is connected on front and rear adjustable track 12, shielding is flat
The front end of platform 1 is provided with horizontal bubble 14 and baffle plate 15, and baffle plate 15 is integrally formed with shielding platform 1.
In the present embodiment, during test, four BNC connectors 3 are connected in alternating current impedance instrument, the height of the adjustable stand of regulation
Degree and level, it is ensured that the height and level of shielding platform 1 meet requirement, according to the size of sample dimensions, by adjusting branch up and down
The upper and lower of frame 7, left and right adjusting track 13 and front and rear adjustable track 12 regulation test lead, left and right and front and back position, it is ensured that test electricity
Pole 9 and test specimen test surfaces center alignment, maximum is compressed to by spring 10, and test electrode 9 is fixed by bolt 11, in two surveys
One layer of conducting resinl of uniform application respectively on examination electrode 9, test specimen is placed in the middle of test lead, unclamps bolt 11, slowly allows test
Electrode 9 contacts test specimen two ends, after contact fully, bolt 11 is fixed, you can the AC impedance of test test specimen, after the completion of test,
A terminal bolt 11 is unclamped, it is outer to draw test electrode 9 to take out test specimen, then the pine of test electrode 9 to test original place is fixed, test open circuit is handed over
Flow impedance instrument.
It is pointed out that the front end of shielding platform 1 is provided with horizontal bubble 14 and baffle plate 15, baffle plate 15 and shielding platform 1
It is integrally formed, such structure design, it can be ensured that whole fixture quick regulation level, greatly improves operating efficiency.In fact,
Can also specifically be set according to actual conditions.
In addition, four BNC connectors 3 are arranged in two rows two and are neatly distributed on the front end face of shielding box 2, such structure sets
Meter, not using only more facilitating, and when may further ensure that timing lead location and actual test lead location one
Cause property.In fact, can also specifically be set according to actual conditions.
Additionally, BNC is the abbreviation of Bayonet Nut Connector.
The merely exemplary explanation principle of the invention of above-described embodiment and its effect, not for the limitation present invention.It is any ripe
The personage for knowing this technology all can carry out modifications and changes under without prejudice to spirit and scope of the invention to above-described embodiment.Cause
This, all those of ordinary skill in the art are completed under without departing from disclosed spiritual and technological thought
All equivalent modifications or change, should be covered by claim of the invention.
Claims (3)
1. a kind of monoblock type cement-based material ac impedance measurement fixture, it is characterised in that：Including shielding platform (1), shielding box
(2) stand, (7) two groups of upper and lower adjusting bracket, two groups of test lead, front and rear adjustable track (12) and left and right adjusting track, be can adjust
(13), described shielding box (2) is located at the front end lower section of shielding platform (1), described shielding platform (1) and shielding box (2)
Body formed, the front end face of the shielding box (2) is provided with four BNC connectors (3), and described adjustable stand includes adjustable pole four
Group, four groups of described adjustable poles are affixed near four angles of shielding platform (1) lower surface, and described adjustable pole includes upper branch
Bar (4), lower fulcrum bar (5) and locking member (6), described upper rack posts (4) are hollow structure, and the upper end of the lower fulcrum bar (5) is arranged
It is locked in upper rack posts (4) and by locking member (6), two groups of described test leads are slidably connected on two groups and lower respectively
On section support (7), described test lead includes spring clip (8), test electrode (9), spring (10) and bolt (11), described survey
Examination electrode (9) is clamped in the retaining part of spring clip (8) and is locked by bolt (11), and described spring (10) is fastened on
The retaining part rear of spring clip (8), described test electrode (9) is electrically connected with BNC connector (3), described front and rear buffer rail
Longitudinally located at the left and right two ends of shielding platform (1), described left and right adjusting track (13) is laterally located at shielding platform (1) in road (12)
Rear and front end and intersected vertically with front and rear adjustable track (12), before the lower slide of the upper and lower adjusting bracket (7) is connected to
Afterwards on adjustable track (12).
2. a kind of monoblock type cement-based material ac impedance measurement fixture according to claim 1, it is characterised in that：It is described
The front end of shielding platform (1) is provided with horizontal bubble (14) and baffle plate (15), described baffle plate (15) and shielding platform (1) integrally into
Type.
3. a kind of monoblock type cement-based material ac impedance measurement fixture according to claim 1 and 2, it is characterised in that：
Four described BNC connectors (3) arrange in two rows two and are neatly distributed on the front end face of shielding box (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710007417.4A CN106841697B (en) | 2017-01-05 | 2017-01-05 | A kind of monoblock type cement-based material ac impedance measurement fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710007417.4A CN106841697B (en) | 2017-01-05 | 2017-01-05 | A kind of monoblock type cement-based material ac impedance measurement fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106841697A true CN106841697A (en) | 2017-06-13 |
| CN106841697B CN106841697B (en) | 2019-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710007417.4A Expired - Fee Related CN106841697B (en) | 2017-01-05 | 2017-01-05 | A kind of monoblock type cement-based material ac impedance measurement fixture |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114280495A (en) * | 2021-12-17 | 2022-04-05 | 中国地质大学（武汉） | Device for testing single solid oxide battery |
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| JP2002202382A (en) * | 2000-12-28 | 2002-07-19 | Non-Destructive Inspection Co Ltd | Measuring method for resistivity and device thereof |
| CN101435816A (en) * | 2008-12-11 | 2009-05-20 | 重庆大学 | Anti-sulphates corrosive test method and test device of cement concrete |
| CN102147387A (en) * | 2011-01-17 | 2011-08-10 | 北京工业大学 | Device for testing different cracking conditions of interior of cement-based material and method |
| CN102539928A (en) * | 2010-12-21 | 2012-07-04 | 香港科技大学 | Pore structure analyzer based on non-contact impedance measurement for cement-based materials |
| CN103713023A (en) * | 2013-12-17 | 2014-04-09 | 深圳大学 | Method for testing carbonation depth of cement-base material |
| CN104133113A (en) * | 2014-08-11 | 2014-11-05 | 孙炳全 | Method for eliminating rest potential to accurately measure concrete specific resistance |
-
2017
- 2017-01-05 CN CN201710007417.4A patent/CN106841697B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002202382A (en) * | 2000-12-28 | 2002-07-19 | Non-Destructive Inspection Co Ltd | Measuring method for resistivity and device thereof |
| CN101435816A (en) * | 2008-12-11 | 2009-05-20 | 重庆大学 | Anti-sulphates corrosive test method and test device of cement concrete |
| CN102539928A (en) * | 2010-12-21 | 2012-07-04 | 香港科技大学 | Pore structure analyzer based on non-contact impedance measurement for cement-based materials |
| CN102147387A (en) * | 2011-01-17 | 2011-08-10 | 北京工业大学 | Device for testing different cracking conditions of interior of cement-based material and method |
| CN103713023A (en) * | 2013-12-17 | 2014-04-09 | 深圳大学 | Method for testing carbonation depth of cement-base material |
| CN104133113A (en) * | 2014-08-11 | 2014-11-05 | 孙炳全 | Method for eliminating rest potential to accurately measure concrete specific resistance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114280495A (en) * | 2021-12-17 | 2022-04-05 | 中国地质大学（武汉） | Device for testing single solid oxide battery |
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| CN106841697B (en) | 2019-06-25 |
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Granted publication date: 20190625 Termination date: 20200105 |