CN107741511A - A kind of convenient joint for being used for four leads method resistance measurements - Google Patents
A kind of convenient joint for being used for four leads method resistance measurements Download PDFInfo
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- CN107741511A CN107741511A CN201711189294.7A CN201711189294A CN107741511A CN 107741511 A CN107741511 A CN 107741511A CN 201711189294 A CN201711189294 A CN 201711189294A CN 107741511 A CN107741511 A CN 107741511A
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- contact
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- guide card
- collets
- platform
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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
- G01R1/0416—Connectors, terminals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of convenient joint for being used for four leads method resistance measurements, it is that test specimen to be measured is fixed on test platform in resistance measurement event, is then measured by measurement apparatus；The present invention includes support and contact, and support is connected with test platform, and contact is connected with test specimen, and contact is pressed on test specimen by support.Its is simple in construction, measurement is accurate, can flexible design as needed, adapt to different test objects, can be used for the resistance for measuring special-shaped test specimen, subsized specimen；And do not require to weld when being connected with test specimen, but still there is very high electrical connection stability.
Description
Technical field
The present invention relates to a kind of equipment of measuring resistance, specially a kind of convenient joint for being used for four leads method resistance measurements,
Belong to resistance test technical field.
Background technology
Four leads methods are that one kind measures electronic device, the high-precision measuring method of especially small resistance electronic device.Four draw
, it is necessary to fix two current feeds and at least two voltage leads on test specimen during line measurement test specimen resistance, these leads, especially
It is voltage lead, it is necessary to test specimen good contact to ensure the accuracy of measurement, therefore would generally use welding.Electronic device
Form it is varied, some devices do not use reserved terminal, also inconvenient directly welding, then with four leads methods for welding
Just need the long period to carry out preliminary preparation during measurement, influence operating efficiency, or even because problems of welded quality influences to survey
Measure the reliability of result.
The research on four leads method resistance measurements includes in the prior art, such as " the Electrical transport of Shanghai Communications University
Measurement apparatus and measuring method " (patent publication No.：CN103941117A), a kind of Electrical transport measurement apparatus is disclosed, can
To measure crystalline material anisotropy Electrical transport by multiple steps, solve traditional four probes transport test device can not
The problem of easily measuring anisotropy Electrical transport, enormously simplify operating process, improves conventional efficient.In addition, pearl
A kind of " four leads method battery clamps " (patent publication No. of Hai Lifei Technology Service Co., Ltd：CN205506870U) disclose
A kind of four leads method battery clamps, it can realize that welding battery-end lead is exempted in the connection of four leads methods, improve efficiency.Further,
Valeo automotive interior controls a kind of " steering-column switch welding switching detection device " of (Shanghai) Co., Ltd., and (patent discloses
Number：CN206378567U a kind of utility model patent for being applied to be related to auto parts and components mounting technology field) is disclosed, specifically
Say it is a kind of steering-column switch welding switching detection device, using test point probe and wire harness terminal adapter to four slotting leads
The method that method and universal meter of connecting measure impedance, checks pad break-make, is applicable to more kinds of PCBA of Volvo, Geely, convenient,
Efficiently, it is cost-effective.
Invention above and utility model patent can improve measurement efficiency applied to respective field and realize excellent skill
Art effect, but they are only used for specific measurement object.And these equipment, joint design are more complicated, cause volume phase
Contrast huge, be not easy to measure the smaller test object of size.
In order to solve the above technical problems, the present invention needs, offer one kind is simple in construction, measurement is accurate, while can apply to essence
The convenient joint of close device resistance measurement.
The content of the invention
The invention discloses a kind of convenient joint for being used for four leads method resistance measurements, and it can be used for measuring special-shaped examination
The resistance of part, subsized specimen, omit welding process, improve measurement efficiency, and it is simple in construction, measuring accuracy is high.
A kind of convenient joint for being used for four leads method resistance measurements, it is that test specimen to be measured is fixed on survey in resistance measurement event
Platform is tried, is then measured by measurement apparatus；It is characterised in that it includes support and contact, the support and the test
Platform is connected, and the contact is connected with the test specimen, and the contact is pressed on the test specimen by the support.
Further, the support includes platform connecting portion and contact compressed part, the platform connecting portion and the test
Platform is detachably connected, the contact compressed part and the contact.
Preferably, the platform connecting portion passes through Nian Jie, rivet or bolt connection with the test platform.
Preferably, the contact compressed part includes regulating bolt, the regulating bolt bottom and the contact.
Further, the contact includes collets, arch guide card and wire；The collets and the contact compressed part
Contact；The arch guide card concave surface is connected with the collets, and the arch guide card convex surface is connected with the test specimen, the arch
Guide card is connected with wire one end；The other end of the wire is connected with the measurement apparatus.
Preferably, the arch guide card passes through Nian Jie, rivet or bolt connection with the collets.
Further, connected between the contact and the test specimen by elargol.
Further, the convenient joint includes a support and four contacts；Support is structure as a whole, including platform connects
Socket part and contact compressed part；Platform connecting portion is made up of the connecting plate of two position correspondences, and connecting plate leads to test platform respectively
Cross bolt connection；Contact compressed part includes a pressure strip and two supporting plates, and two supporting plate one end are connected with two respectively
One end vertical connection of plate, pressure strip both ends are set respectively with two supporting plates away from connecting plate one end vertical connection on pressure strip
There is screw, regulating bolt, regulating bolt bottom and contact are installed in screw；Contact include collets, arch guide card and
Wire, collets are rectangle structure, and the top surface of collets contacts with the bottom of regulating bolt；Arch guide card concave surface and collets
Bottom surface connection, arch guide card convex surface is connected with test specimen, arch guide card with wire one end by being welded to connect, the wire other end and
The measurement apparatus connection.
Further, the test specimen has a lead, the lead number sum of the contact number and the test specimen be more than or
Equal to four.
A kind of convenient joint for being used for four leads method resistance measurements disclosed by the invention, its is simple in construction, measurement is accurate, can
With flexible design as needed, different test objects is adapted to, can be used for the resistance for measuring special-shaped test specimen, subsized specimen；And
And do not require to weld when being connected with test specimen, but still have very high electrical connection stability.
Convenient joint disclosed by the invention, design contact are contacted by arch guide card with test specimen to be measured so that contact more may be used
Lean on, and the contact area provided is bigger, can obtain lower contact resistance, therefore can measure smaller resistance value；And
The contact area of arch guide card and test specimen can adjust, therefore disclosure satisfy that different measurement demands.Meanwhile even if external condition becomes
Change, when causing that pressure is significantly increased between support and contact, the structure also can power of the mitigation on test specimen to a certain extent,
Test specimen is avoided to be destroyed.
The platform connecting portion of present invention design support is detachably connected with test platform, can ensure to prop up in measurement process
Frame is stably connected with test platform, so as to ensure the stability of the electrical connection in measurement process.And be detachably connected can be square
Just measurement terminates rear removal bracket, and the mode being detachably connected disclosure satisfy that different testing requirements.
Each the spacing between contact and support individually can be finely adjusted with structures such as bolts, so as to adjust each touch
Pressure between point and test specimen, and then the contact area between arch guide card and test specimen is adjusted, to meet the need in test process
Ask.
The present invention sets four contacts to can be used for four leads methods measurement resistance.Compared to measuring instrument of the prior art
Device, convenient joint design provided by the invention is simple, measuring accuracy is high, and can measure small specimen, precision components
Resistance.Also, elargol is smeared between contact and test specimen so that contact resistance programmable single-chip system welding kesistance；Elargol is used simultaneously, is surveyed
It can be washed away after examination with organic solvent, therefore the requirement to test specimen is few, pollution is small.
Four leads methods are that one kind measures electronic device, the high-precision measuring method of especially small resistance electronic device.Utilize
, it is necessary to two current feeds and at least two voltage leads when four leads methods measure resistance, and when test specimen has lead in itself,
As long as ensure that the lead number of the number of contact and test specimen in itself is more than four in convenient joint, you can measure and try using four leads methods
Part resistance.Also, when needing to measure on test specimen the resistance between difference, number of leads can be increased as extra voltage
Lead, so the quantity of convenient joint can be increased when the resistance between measuring test specimen difference.
Brief description of the drawings
Fig. 1 is a kind of structural representation for the convenient joint for being used for four leads method resistance measurements；
Fig. 2 is a kind of profile for the convenient joint for being used for four leads method resistance measurements；
Fig. 3 is a kind of structural representation for the convenient joint for being used for four leads method resistance measurements；
Fig. 4 is the RT curves that measurement superconducting thin film resistance varies with temperature for the first time；
Fig. 5 is the RT curves that second of measurement superconducting thin film resistance varies with temperature；
Fig. 6 is the RT curves varied with temperature using traditional four leads methods measurement superconducting thin film resistance.
Brief description of the drawings：1. support；2. contact；3. connecting plate；4. pressure strip；5. supporting plate；6. regulating bolt；7. insulation
Block；8. arch guide card；9. wire；10. test specimen；11. test platform.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
As shown in figure 1, a kind of convenient joint for being used for four leads method resistance measurements, including a support 1 and four contacts
2；Resistance measurement is that test specimen to be measured is fixed in test platform to measure.
Support 1 is structure as a whole including platform connecting portion and contact compressed part；Platform connecting portion is by two position correspondences
Connecting plate 3 is formed, and connecting plate 3 is bolted with test platform respectively；Contact compressed part includes a pressure strip 4 and two
Supporting plate 5, one end of two supporting plates 5 one end vertical connection with two connecting plates 3 respectively, the both ends of pressure strip 4 are respectively with two
For individual supporting plate 5 away from one end vertical connection of connecting plate 3, pressure strip 4 is provided with four screws, and regulation spiral shell is separately installed with screw
Bolt 6, the bottom of regulating bolt 6 contact with contact 2 so as to reach the technique effect being pressed on contact 2 on test platform respectively.
Contact 2 includes collets 7, arch guide card 8 and wire 9, and collets 7 are rectangular parallelepiped structure, the top surface of collets 7 with
The bottom surface contact of regulating bolt 6；The concave surface of arch guide card 8 is connected with the bottom surface of collets 7, and the convex surface of arch guide card 8 is connected with test specimen, bow
By being welded to connect, the other end of wire 9 is connected with measurement apparatus for one end of shape guide card 8 and wire 9.
Further, arch guide card 8 is bolted with collets 7.
Further, the convex surface of arch guide card 8 is connected with test specimen by elargol.
During use, first have to prepare contact：Strip epoxy plate is first cut into collets by required size, then
It is bonded with copper sheet so that copper sheet forms arch guide card, then arch guide card and wire welding i.e. can obtain into contact；Then pacified
Dress：First test specimen is adhesive on low temperature platform with low temperature；Then four contacts are bonded on test specimen with elargol successively；Installation branch
Frame, it is being used to fix each contact with contact correspondence position installation and adjustment bolt；Each contact is adjusted with treating by regulating bolt
The contact area of test block, during can add elargol, reduce contact resistance；After the completion of adjustment, it will be led with contact portion
Line, which is respectively connected to current source and nanovoltmeter, can carry out resistance measurement.
Embodiment 2
As shown in Fig. 2 a kind of convenient joint for being used for four leads method resistance measurements, resistance measurement is to consolidate test specimen 10 to be measured
It is scheduled in test platform 11 and measures, including a support 1 and a contact.
Support 1 is structure as a whole including platform connecting portion and contact compressed part；Platform connecting portion is by two position correspondences
Connecting plate 3 is formed, and connecting plate 3 is bolted with test platform 11 respectively；Contact compressed part includes a pressure strip 4 and two
Individual supporting plate 5, the one end of two one end of supporting plate 5 respectively with two connecting plates 3 are connected, the both ends of pressure strip 4 respectively with two branch
One end vertical connection of the fagging 5 away from connecting plate 3, pressure strip 4 are provided with screw, and regulating bolt 6 is provided with screw, adjust spiral shell
The bottom of bolt 6 is contacted with contact 2 so as to reach the technique effect being pressed on contact 2 on test platform 11.
Contact 2 includes collets 7, arch guide card 8 and wire 9, and collets 7 are rectangular parallelepiped structure, the top surface of collets 7 with
The bottom surface contact of regulating bolt 6；The concave surface of arch guide card 8 is connected with the bottom surface of collets 7, and the convex surface of arch guide card 8 is connected with test specimen 10,
By being welded to connect, the other end of wire 9 is connected with measurement apparatus for one end of arch guide card 8 and wire 9.
Further, arch guide card 8 passes through rivet interlacement with collets 7.
Further, the convex surface of arch guide card 8 is connected with test specimen 10 by elargol.
A kind of disclosed convenient joint for being used for four leads method resistance measurements is only made up of a support and a contact, but
It is number, the relative position that can determine convenient joint according to demand in use, so as to meet different measurement need
Ask.
Resistance is measured, it is necessary to two current feeds and at least two voltage leads using four leads methods, when on measurement test specimen
Resistance between difference, number of leads can be increased as extra voltage lead；Using a kind of disclosed in above-described embodiment 2
The convenient joint of four leads methods measurement resistance carries out resistance measurement, concretely comprises the following steps：
(1) determine that test specimen to be measured whether there is current feed and/or voltage lead in itself first, and needed really according to measurement
Determine lead number, and then determine the number of joint easy to use；
(2) contact is prepared：Strip epoxy plate is first cut into collets by required size, is then bonded, makes with copper sheet
Obtain copper sheet and form arch guide card, then arch guide card and wire welding be can obtain into contact；；
(3) install and adjust：First test specimen is adhesive on low temperature platform with low temperature；Then contact is bonded at test specimen with elargol
On；With contact correspondence position mounting bracket, and installation and adjustment bolt be used for fix each contact；It is each by regulating bolt adjustment
The contact area of individual contact and test specimen to be measured, during can add elargol to reduce contact resistance；
(4) after the completion of installing and adjust, the wire with contact portion is respectively connected into current source and nanovoltmeter to be carried out
Resistance measurement；
Embodiment 3
A kind of convenient joint for being used for four leads method resistance measurements, resistance measurement are that test specimen to be measured is fixed on into test platform
In measure, including a support 1 and three contacts 2.
Support 1 is structure as a whole including platform connecting portion and contact compressed part；Platform connecting portion is by two position correspondences
Connecting plate 3 is formed, and connecting plate 3 is bolted with test platform respectively；Contact compressed part includes a pressure strip 4 and two
Supporting plate 5, the one end of two one end of supporting plate 5 respectively with two connecting plates 3 are connected, and the both ends of pressure strip 4 support with two respectively
One end vertical connection of the plate 5 away from connecting plate 3, pressure strip 4 are provided with multiple screws, regulating bolt 6 are provided with screw, regulation
The bottom of bolt 6 is contacted with contact 2 so as to reach the technique effect being pressed on contact 2 on test platform.
Contact 2 includes collets 7, arch guide card 8 and wire 9, and collets 7 are rectangular parallelepiped structure, the top surface of collets 7 with
The bottom surface contact of regulating bolt 6；The concave surface of arch guide card 8 is connected with the bottom surface of collets 7, and the convex surface of arch guide card 8 is connected with test specimen, bow
By being welded to connect, the other end of wire 9 is connected with measurement apparatus for one end of shape guide card 8 and wire 9.
Further, pressure strip 4 is provided with multiple screws, so as in diverse location installation and adjustment bolt 6, Jin Er
Diverse location sets contact, to meet different measurement demands.
Further, arch guide card 8 passes through bonding connection with collets 7.
Further, the convex surface of arch guide card 8 is connected with test specimen 10 by elargol.
Resistance is measured, it is necessary to two current feeds and at least two voltage leads using four leads methods, when on measurement test specimen
Resistance between difference, number of leads can be increased as extra voltage lead；Using a kind of disclosed in above-described embodiment 3
The convenient joint of four leads methods measurement resistance carries out resistance measurement, concretely comprises the following steps：
(1) determine that test specimen to be measured whether there is current feed and/or voltage lead in itself first, and needed really according to measurement
Determine lead number, and then determine the number of joint easy to use；
(2) contact is prepared：Strip epoxy plate is first cut into collets by required size, is then bonded, makes with copper sheet
Obtain copper sheet and form arch guide card, then arch guide card and wire welding be can obtain into contact；；
(3) install and adjust：First test specimen is adhesive on low temperature platform with low temperature；Then contact is bonded at test specimen with elargol
On；With contact correspondence position mounting bracket, and installation and adjustment bolt be used for fix each contact；Adjusted by regulating bolt 6
The contact area of each contact and test specimen to be measured, during can add elargol to reduce contact resistance；
(4) after the completion of installing and adjust, the wire with contact portion is respectively connected into current source and nanovoltmeter to be carried out
Resistance measurement；
Embodiment 4
Resistance measurement is carried out using a kind of convenient joint for being used for four leads method resistance measurements disclosed in embodiment 1, specifically
For：
In the experiment that electricity consumption transportation method measurement superconducting thin film resistance varies with temperature, due to being tested superconducting thin film size
For 10 × 10mm2Left and right, therefore be well suited for connecing using convenient in the present invention in the resistance of four leads methods measurement superconducting thin film
Head.
Joint main structure parameters are：
Timbering material：Epoxy resin；Support span：12mm；Support total height：10mm；Support sagitta：4mm；Insulate bulk
Material：Epoxy resin；Collets thickness：2mm；Insulate block length：5mm；Arch guide card：Red copper；Arcuate tab width：1.2mm；Arch
Piece thickness：0.4mm；Arcuate tab sagitta：1mm；Contact spacing：1.2mm.
Contact processes, and joint installation, demounting procedure are as follows：
(1) prepared by contact：
When making contact, strip epoxy plate is first cut into collets by required size, is then bonded with copper sheet so that
Copper sheet forms arch guide card, then arch guide card and wire welding i.e. can obtain into contact.
(2) install：
Test specimen is adhesive on low temperature platform with low temperature first；Then four contacts are bonded on test specimen with elargol successively；
Mounting bracket, fixed each contact；The contact surface of each contact and superconducting thin film is adjusted by regulating bolt, during can add
Add elargol, reduce contact resistance；After the completion of adjustment, the wire with four contact portions is respectively connected to current source and nanovoltmeter i.e.
Can.
(3) dismantle：
After experiment terminates, support is removed first, then dismantles four contacts successively.Need to use organic solvent when dismantling contact
Dissolve elargol.After the whole removal of contact, test specimen is pulled down from low temperature platform.
Shown in the RT curves accompanying drawing 4 and accompanying drawing 5 varied with temperature using joint measurement superconducting thin film resistance, measure twice
As a result it coincide, illustrates the stability of this joint.It is thin to be illustrated in figure 6 the same a piece of superconduction measured with traditional four leads methods
The RT curves of film, its result are slightly different with curve resistance value before transformation in Fig. 4 and Fig. 5, are the voltage because testing twice
Leading point is different.
It the above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited to reality shown in this article
Example is applied, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that led for this technology
For the those of ordinary skill in domain, some modifications and retouching without departing from the principles of the present invention also should be regarded as the present invention's
Protection domain.
Claims (8)
1. it is that test specimen to be measured is fixed on test in resistance measurement event a kind of convenient joint for being used for four leads method resistance measurements
Platform, then measured by measurement apparatus；It is characterised in that it includes support and contact, the support and the test are flat
Platform is connected, and the contact is connected with the test specimen, and the contact is pressed on the test specimen by the support.
A kind of 2. convenient joint for being used for four leads method resistance measurements according to claim 1, it is characterised in that the branch
Frame includes platform connecting portion and contact compressed part, and the platform connecting portion is detachably connected with the test platform, the contact
Compressed part and the contact.
3. a kind of convenient joint for being used for four leads method resistance measurements according to claim 2, it is characterised in that described flat
Platform connecting portion passes through Nian Jie, rivet or bolt connection with the test platform.
4. a kind of convenient joint for being used for four leads method resistance measurements according to claim 2, it is characterised in that described to touch
Point compressed part includes regulating bolt, the regulating bolt bottom and the contact.
5. a kind of convenient joint for being used for four leads method resistance measurements according to claim 2, it is characterised in that described to touch
Select including collets, arch guide card and wire；The collets contact with the contact compressed part；The arch guide card concave surface with
The collets connection, the arch guide card convex surface are connected with the test specimen, and the arch guide card is connected with wire one end；It is described
The other end of wire is connected with the measurement apparatus.
A kind of 6. convenient joint for being used for four leads method resistance measurements according to claim 5, it is characterised in that the bow
Shape guide card passes through Nian Jie, rivet or bolt connection with the collets.
7. a kind of convenient joint for being used for four leads method resistance measurements according to claim 1, it is characterised in that described to touch
Connected between point and the test specimen by elargol.
8. a kind of convenient joint for being used for four leads method resistance measurements according to claim 1-7 any one, its feature
It is, the convenient joint includes a support and four contacts；Support is structure as a whole, including platform connecting portion and contact pressure
Tight portion；Platform connecting portion is made up of the connecting plate of two position correspondences, and connecting plate is bolted with test platform respectively；Touch
Point compressed part includes a pressure strip and two supporting plates, and two supporting plate one end are vertical with one end of two connecting plates respectively to be connected
Connect, respectively with two supporting plates away from connecting plate one end vertical connection, pressure strip is provided with screw, pacifies in screw at pressure strip both ends
Equipped with regulating bolt, regulating bolt bottom and contact；Contact includes collets, arch guide card and wire, and collets are length
Square structure, the top surface of collets contact with the bottom of regulating bolt；Arch guide card concave surface and the bottom surface of collets connect, arch
Guide card convex surface is connected with test specimen, and with wire one end by being welded to connect, the wire other end connects arch guide card with the measurement apparatus
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711189294.7A CN107741511B (en) | 2017-11-24 | 2017-11-24 | Convenient joint for resistance measurement by four-lead method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711189294.7A CN107741511B (en) | 2017-11-24 | 2017-11-24 | Convenient joint for resistance measurement by four-lead method |
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| Publication Number | Publication Date |
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| CN107741511A true CN107741511A (en) | 2018-02-27 |
| CN107741511B CN107741511B (en) | 2020-07-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068712A (en) * | 2019-04-28 | 2019-07-30 | 昆明理工大学 | A kind of four probe tester of buckle-type |
| CN114137312A (en) * | 2020-11-02 | 2022-03-04 | 国网冀北电力有限公司检修分公司 | Loop resistance test assembly |
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| 郭子兰 等: "四探针原理新设计的低温电阻率测量装置", 《实验室研究与探索》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068712A (en) * | 2019-04-28 | 2019-07-30 | 昆明理工大学 | A kind of four probe tester of buckle-type |
| CN114137312A (en) * | 2020-11-02 | 2022-03-04 | 国网冀北电力有限公司检修分公司 | Loop resistance test assembly |
| CN114137312B (en) * | 2020-11-02 | 2023-12-22 | 国网冀北电力有限公司检修分公司 | Loop resistance test assembly |
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| CN107741511B (en) | 2020-07-24 |
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