CN104991126B - The measurement jig of network transformer - Google Patents
The measurement jig of network transformer Download PDFInfo
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- CN104991126B CN104991126B CN201510400754.0A CN201510400754A CN104991126B CN 104991126 B CN104991126 B CN 104991126B CN 201510400754 A CN201510400754 A CN 201510400754A CN 104991126 B CN104991126 B CN 104991126B
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- measurement jig
- attachment means
- test product
- screening arrangement
- test
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Abstract
The present invention relates to technical field of measurement and test, and more particularly to the measurement jig of network transformer, including pressing device, screening arrangement and attachment means, the screening arrangement is used to shield interference of the outer signals to test product；The pressing device includes compressing member, and the compressing member is used to test product pressing to the attachment means；The screening arrangement has accommodating cavity, and the compressing member is contained in the accommodating cavity；The attachment means include the wiring board and connector being connected, and the connector is used to connect external tester, and the wiring board is used for connecting test product.The measurement jig of above-mentioned network transformer, test product can be pressed to by attachment means by pressing device, realize the accurate matching of measurement jig and test product, simultaneously, the interference of outer bound pair network transformer test is excluded in the presence of screening arrangement, so as to reach the beneficial effect of the insertion loss value of accurate test network transformer.
Description
Technical field
The present invention relates to technical field of measurement and test, more particularly to the measurement jig of network transformer.
Background technology
Network transformer is also referred to as data pump or network isolation transformer, its be mainly used in having signal transmission, impedance matching,
The effects such as waveform reparation, signal noise suppression and high-voltage isolating.It has long-distance transmissions ability, higher interference free performance
And stronger compatible performance etc..Due to the design of itself, certain insert often be present in use in network transformer
Enter loss.The insertion loss influences the performance of whole network transformer to a certain extent, therefore, it is necessary to network transformation
The insertion loss of device is tested, so that it meets requirement.
The content of the invention
Based on this, it is necessary to for how accurate test network transformer insertion loss value the problem of, there is provided a kind of net
The measurement jig of network transformer.
A kind of measurement jig of network transformer, including pressing device, screening arrangement and attachment means；The pressing device
The screening arrangement is fixedly installed on, it includes compressing member, and the compressing member is used to test product pressing to the attachment means；
The screening arrangement is detachably arranged at the attachment means, and for shielding interference of the outer signals to test product, it has
Accommodating cavity, the compressing member are contained in the accommodating cavity；The attachment means include the wiring board and connector being connected, described
Connector is used to connect external tester, and the wiring board is used for connecting test product.
In one of the embodiments, the pressing device also includes connecting plate；The compressing member includes：Elastic component, limit
Position part and briquetting；The locating part is connected with the connecting plate, the briquetting and the remote connecting plate of the locating part
One end is connected, and the elastic component is arranged between the briquetting and the connecting plate.
In one of the embodiments, the elastic component is spring, and it is sheathed on the locating part.
In one of the embodiments, the briquetting is provided with buffering position, and one end of the locating part is arranged at described delay
Rush position.
In one of the embodiments, the wiring board includes pcb board, and the pcb board includes substrate, and is arranged on institute
The ground wire and two line-groups on substrate are stated, two line-groups are symmetricly set in the ground wire both sides.
In one of the embodiments, the line-group includes some cablings, and some described cabling one end are disposed in proximity to institute
Ground wire is stated, the other end is arranged on the side of the substrate.
In one of the embodiments, the line-group includes eight cablings.
In one of the embodiments, the attachment means include some coaxial connectors, each coaxial connector
Connect a cabling.
In one of the embodiments, the attachment means include eight coaxial connectors, each coaxial connector
One cabling of corresponding connection.
In one of the embodiments, the screening arrangement is made of metal material.
The measurement jig of above-mentioned network transformer, test product can be pressed to by attachment means by pressing device, realized
The accurate matching of measurement jig and test product, meanwhile, outer bound pair network transformer test is excluded in the presence of screening arrangement
Interference, so as to reach the beneficial effect of the insertion loss value of accurate test network transformer.
Brief description of the drawings
Fig. 1 is the structural representation of the measurement jig of one embodiment of the invention network transformer；
Fig. 2 is the measurement jig of network transformer and the attachment structure schematic diagram of network transformer；
Fig. 3 is the structural representation of embodiment illustrated in fig. 1 pressing device；
Fig. 4 is the structure enlargement diagram of part A shown in Fig. 3；
Fig. 5 is another view of part A structure shown in Fig. 3；
Fig. 6 is body and pressing device and the attachment structure schematic diagram of attachment means；
Fig. 7 is the structural representation of embodiment illustrated in fig. 3 pcb board；
Fig. 8 is the structural representation of the measurement jig of another embodiment of the present invention network transformer.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.Many details are elaborated in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case of running counter to intension of the present invention, therefore the present invention is not limited by following public specific embodiment.
It should be noted that when element is referred to as " being fixed on ", " being arranged at " another element, it can be directly another
On individual element or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be
It is directly connected to another element or may be simultaneously present centering elements.Term as used herein " vertically ", " level
", "left", "right" and similar statement for illustrative purposes only, it is unique embodiment to be not offered as.
It should be noted that test product includes network transformer.Measurement jig is network transformation of the present invention
The measurement jig of device.Tester includes Network Analyzer and spectrum analyzer.
Referring to Fig. 1, its structural representation for the measurement jig of one embodiment of the invention network transformer, network transformation
The measurement jig 10 of device includes：Pressing device 100, screening arrangement 101 and attachment means 102.For example, pressing device 100 is fixed
It is arranged at screening arrangement 101.For example, screening arrangement 101 is detachably arranged at attachment means 102, for shielding outer signals pair
The interference of test product.As shown in figure 3, for example, screening arrangement 101 has accommodating cavity 132, compressing member 110 and test product are received
It is dissolved in accommodating cavity 132.For example, pressing device 100 by test product, i.e., network transformer is connected to attachment means 102, and causes
The pin of network transformer fully contacts with attachment means 102, so that Network Analyzer matches with measurement jig, coincide.
For example, screening arrangement 101 is used to shield interference of the outer signals to test product.For example, shielding outer signals are to test product
The mode of shielding be metallic shield mode, i.e., the metallic character carried in itself using screening arrangement 101 is produced with reaching to test
The purpose of product shielding processing.So as to avoid interference of the external interference signal to test product, improve in Network Analyzer
The lower efficiency for completing to test network transformer insertion loss the analysis and test of influence factor of test.
Referring to Fig. 2, its measurement jig and network transformer attachment structure schematic diagram for network transformer, namely network
The schematic diagram of transformer insertion loss test.In the present embodiment, it is to the mode of network transformer insertion loss test：Pass through
Network Analyzer or spectrum analyzer carry out analysis test.For example, the Two-port netwerk of Network Analyzer, i.e. RF ports and OUT terminal mouth,
Export test signal；RF ports and OUT terminal mouth are connected by 50 Ω coaxial cable with tested network transformer；Meanwhile network
Other two ports of analyzer, i.e. RF ports and IN ports are connected by 50 Ω coaxial cable with tested network transformer,
Measured signal is received, then, the insertion loss value of network transformer is calculated by Network Analyzer or spectrum analyzer.
Understand, the test to high-frequency signal preferably shields or the processing mode of ground connection, but test signal will pass through
Network transformer is then unable to grounding, and can only carry out shielding processing to network transformer and test fixture.With reference to Fig. 1 and figure
2, in the present embodiment, sufficiently consider the testing feature of network transformer so that the survey of Network Analyzer or spectrum analyzer
Trial signal can be intactly by being tested network transformer, and the fixture or pin for avoiding the tested tool of the test signal couple,
Meet the shielding of measurement jig and the test request of electromagnetic compatibility.
Referring to Fig. 3, it is the structural representation of embodiment illustrated in fig. 1 pressing device, for example, pressing device 100 includes
Compressing member 110 and connecting plate 120.For example, compressing member 110 is connected with connecting plate 120.For example, connecting plate 120 is provided with engagement
Position, compressing member 110 are connected with engagement position.For example, compressing member 110 is used to test product pressing to attachment means 102 so that network
The pin of transformer fully contacts with attachment means 102.For example, pressing device 100 connects screening arrangement by connecting plate 120
101。
For example, connecting plate 120 includes substrate 121, external connection portion 122 and fixing hole 123.For example, fixing hole 123 is used to connect
The screening arrangement 101.The connected mode is：Substrate 121 and the screening arrangement 101 are connected by fixed column, i.e.,
Fixed column is worn into fixing hole 123, substrate 121 is fixed on the screen to be spirally connected, in a manner of grafting, clamping or interference fit
Cover on device 101.In the present embodiment, substrate 121 is rectangle, and it is made up of metal material, also, its sectional area or its bottom
Face is more than the sectional area of the screening arrangement 101, in this way, substrate can be caused fully to cover screening arrangement 101, and certain
Shielding instrument can also be used as in degree, further improves shielding action of the measurement jig to electromagnetic signal.
For the ease of operating connecting plate, for example, external connection portion 122 includes some bolts for being connected to substrate 121, and for example, outside
Socket part 122 is some alignment pins for being connected to substrate 121.In this way, by external connection portion 122, pressing device 100 can be connected to
External equipment, for example, by the externally connected manipulator of pressing device 100, pressing device 100 is operated with reality by manipulator
Test product is now pressed to the function of attachment means 102.
Referring to Fig. 3, for example, compressing member 110 includes：Elastic component 111, locating part 112 and briquetting 113.For example, limit
Position part 112 is connected with connecting plate 120.For example, briquetting 113 is connected with one end of the remote connecting plate 120 of locating part 112.For example,
Elastic component 111 is arranged between briquetting 113 and connecting plate 120.For example, connecting plate 120 be provided with engagement position, locating part 112 with
Engagement position connection.It is appreciated that locating part 112 is main in the present embodiment to play connection compressing member 110 and connecting plate 120
Effect, i.e., compressing member 110 and connecting plate 120 are assembled into by the pressing device 100 of an entirety by locating part 112, and passed through
Elastic component 111 realizes the pressuring action to test product with briquetting 113, to ensure that test product is filled with the attachment means 102
Tap is touched.
Referring to Fig. 4, it is the structure enlargement diagram of part A shown in Fig. 3, for example, locating part 112 includes cylinder 112a
With limited block 112b.For example, cylinder 112a both ends connect the substrate 121 and limited block 112b respectively.For example, elastic component 111
For spring.For example, elastic component 111 is sheathed on locating part 112.For example, briquetting 113 includes block 113a and pressing plate 113b.For example,
Block 113a is used to abut test product.For example, pressing plate 113b is used for the pin for compressing test product so that test product and institute
Attachment means 102 are stated fully to contact.For example, pressing plate 113b is arranged at the both sides of the block 113a, its height is slightly larger than test
The height of product, also, pressing plate 113b has certain elasticity, in this way, while the pin with test product contacts, ensures
There are enough pins for forcing tight test product so that test product fully contacts with the attachment means 102.
For example, buffering position 113c is provided with block 113a.For example, one end of locating part 112 is arranged at buffering position 113c.
For example, buffering position 113c is used to prevent from over-stressed damaging transformer by pressure.For example, the both ends of elastic component 111 abut the substrate respectively
121 and briquetting 113.For example, limited block 112b is used to connect briquetting 113.For example, buffering position 113c is host cavity, limited block
112b is placed in the host cavity.For example, the depth of host cavity is more than limited block 112b thickness.For example, limited block 112b
Thickness is the 95% of the depth of host cavity.In this way, can cause in test process, briquetting 113 exists certain with test product
Cushion space, ensure that test product is turn avoid while having pressuring action to test product to be damaged because of transition stress
The occurrence of.
Referring to Fig. 5, it is another view of part A structure shown in Fig. 3, for example, test product is positioned over
After the test zone 200 of the attachment means 102, compressing member 110 moves towards the attachment means 102.In moving process,
The displacement of 113 relative limit part of briquetting 112, now, block 113a abuts with test product, the pin of pressing plate 113b and test product
Contact.Meanwhile the deformation retract of elastic component 111 and apply active force to block 113a and pressing plate 113b.Finally, as block 113a
When being moved in buffering position 113c and abutting limited block 112b, the relative limit part 112 of briquetting 113 stops movement, namely elastic component
111 deformation terminate, and it is because elastic force caused by deformation remains unchanged, namely briquetting 113 remains unchanged to the active force of test product.
In this way, while ensureing that test product fully contacts with the attachment means 102 in the presence of briquetting 113, also effectively avoid
Damage because pressure is excessive the situation of test product by pressure, asked so as to solve the technology for avoiding damaging test product in test process
Topic.
Referring to Fig. 3, for example, screening arrangement 101 includes body 131.For example, body 131 offer it is accommodating
Chamber 132.For example, body 131 is provided with connection position 133.For example, connection position 133 is used to connect pressing device 100.For example, even
Position 133 is connect to be connected with pressing device 100 by fixed column.For example, accommodating cavity 132 is used to house compressing member 110 and test production
Product.That is, test product is contained in the accommodating cavity 132, also, positioned at the compressing member 110 and the attachment means
Region between 102, in order to which test product is pressed into attachment means 102 by compressing member 110.
In order to improve the shielding properties of measurement jig, for example, screening arrangement 101 is made of metal material.Such as Fig. 6 institutes
Show, for example, body 131 is provided at both ends with first connecting portion 134 and second connecting portion 135.For example, the pressing device
100 offer the first shielding trench 114, and the first connecting portion 134 is plugged in first shielding trench 114.For example, the connection
Device 102 offers secondary shielding groove 115, and second connecting portion 135 is plugged in the secondary shielding groove 115.By by body
131 both ends are arranged at the first shielding trench 114 and secondary shielding groove 115, improve the shielding properties of measurement jig, avoid outside
Electromagnetic signal enters inside screening arrangement 101 via the coupling part of body 131 and pressing device 100 and attachment means 102.
In this way, effectively shield interference of the extraneous electromagnetic signals to network transformer, that is, realize network transformer with it is extraneous every
From eliminating the interference of outer bound pair network transformer test.For example, interference has radiation interference and Conduction Interference.
Referring to Fig. 3, for example, attachment means 102 include locating piece 141, earthing block 142, wiring board 143 and some
Connector 144.For example, wiring board 143 is connected with some connectors 144.For example, connector 144 is used to connect external tester.
For example, wiring board 143 is used for connecting test product.For example, the secondary shielding groove 115 is opened in the locating piece 141.
Referring to Fig. 7, it is the structural representation of embodiment illustrated in fig. 3 pcb board, for example, wiring board 143 includes pcb board
145.For example, pcb board 145 includes substrate 145a and the ground wire 145b and two line-groups that are arranged on the substrate 145a
145c.For example, two 145c line-groups are symmetricly set in ground wire both sides.For example, line-group 145c includes some cablings.If for example,
Dry cabling one end is disposed in proximity to be grounded 145b, and the other end is arranged on substrate 145a side.In the present embodiment, line-group
145c includes eight cablings and eight connectors.For example, connector 144 is connected with cabling.A for example, correspondence of connector 144
Connect a cabling.For example, attachment means 102 include some coaxial connectors, each coaxial connector one cabling of corresponding connection.
For example, coaxial connector connects cabling by connector 144.For example, attachment means 102 include eight coaxial connectors, it is each
Coaxial connector one cabling of corresponding connection.
In order to realize the matching of measurement jig and tester, for example, the internal resistance of the output line of tester and the input of pcb board
End internal resistance is consistent, and the output end internal resistance of pcb board is consistent with the internal resistance of the input line of tester.For example, the resistance of the internal resistance is 50
Ω, 75 Ω or 100 Ω.For example, the input of the pcb board is a cabling in line-group 145c, the resistance of the cabling internal resistance
It is worth for 50 Ω, 75 Ω or 100 Ω.That is, the resistance of each cabling is 50 Ω, 75 Ω or 100 Ω.In this way,
Realize the matching of measurement jig and tester and coincide.
In order to improve the contact performance of test product and measurement jig, for example, contact of the pin of test product with pcb board
Using spring pressing type, that is to say, that using the pressing plate to cause the pin of test product fully to be contacted with pcb board.Example
Such as, conducting resinl is additionally provided between the pin and pcb board of test product, to prevent because the pin length of test product, height
Cause to be not in contact with pcb board or loose contact etc. uneven.For example, the trace width of pcb board is more than drawing for test product
The width of pin, namely measurement jig contact surface be more than test product exit contact area, with ensure measurement jig with
Test product can be contacted fully.In this way, it is more than test product in the contact surface using spring pressing type, conducting resinl and measurement jig
Exit contact area after, improve test product and the contact performance of measurement jig, ensure that test product with test
The abundant contact of tool.
In order to further improve the shielding properties of measurement jig, for example, ground wire 145b is connected with earthing block 142.And for example,
Locating piece 141 is connected with ground wire 145b.For example, locating piece 141 and earthing block 142 are made of metal material；And for example, connect
Ground wire 145b is connected with earthing block 142 by the first Flexible Connector, and locating piece 141 and ground wire 145b is connected by the second elasticity
Fitting connects；In one of embodiment, the first Flexible Connector and the second Flexible Connector are prefabricated bending member, are, for example,
S fonts or figure-three.In this way, further increase the shielding properties of measurement jig.
Referring to Fig. 8, its structural representation for the measurement jig of another embodiment of the present invention network transformer.In order to just
In test product, for example, the measurement jig 20 of network transformer also includes support 104.For example, for example, pressing device 100 and screen
Cover device 101 to be fixedly connected, the one end of support 104 is connected with pressing device 100, and the other end is connected with attachment means 102.For example,
Support 104 includes 151, two pillars 152 of bottom plate, altogether plane plate 153 and quick clip 154.For example, two pillars 152 are arranged on
The side of bottom plate 151 and bottom plate 151 are spirally connected fixation.For example, one end of the remote bottom plate 151 of common plane plate 153 and two pillars 152
It is flexibly connected.For example, quick clip 154 is arranged on common plane plate 153.For example, quick clip 154 is connected with pressing device 100.Example
Such as, quick clip 154 is connected with the external connection portion 122 of the connecting plate 120.For example, attachment means 102 are arranged on bottom plate 151
On.For example, support also includes sliding block and guide pillar.For example, the relatively described guide pillar of the sliding block is slidably.For example, guide pillar one end is consolidated
It is scheduled on bottom plate, the other end is connected with sliding block.For example, one end of the remote guide pillar of sliding block connects the pressing device.Example
Such as, plane plate 153 is provided with some installation positions altogether, and some installation positions are used to connect outside controlling equipment, for example, some installation positions
The outside manipulator of connection.So as to using the support, by controlling common plane plate that pressing device can be made close or away from connection dress
Put.Because pressing device and screening arrangement are connected, when needing to be tested, by controlling common plane plate by pressing device
Attachment means are shifted to screening arrangement, so that test product fully contacts with attachment means, to complete a test job.
In this way, can conveniently pick and place product by support, while improve testing efficiency.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
1. a kind of measurement jig of network transformer, it is characterised in that including pressing device, screening arrangement and attachment means；
The pressing device is fixedly installed on the screening arrangement, and it includes compressing member and connecting plate, and the compressing member is used for will
Test product presses to the attachment means；
The screening arrangement is detachably arranged at the attachment means, for shielding interference of the outer signals to test product, its
With accommodating cavity, the compressing member is contained in the accommodating cavity；
The compressing member includes：Elastic component, locating part and briquetting；
The locating part is connected with the connecting plate, and one end of the briquetting and the remote connecting plate of the locating part connects
Connect, the elastic component is arranged between the briquetting and the connecting plate；
The attachment means include the wiring board and connector being connected, and the connector is used to connect external tester, described
Wiring board is used for connecting test product.
2. measurement jig according to claim 1, it is characterised in that the elastic component is spring, and it is sheathed on the limit
Position part.
3. measurement jig according to claim 2, it is characterised in that the briquetting is provided with buffering position, the locating part
One end be arranged at the buffering position.
4. measurement jig according to claim 1, it is characterised in that the wiring board includes pcb board, the pcb board bag
Substrate is included, and ground wire and two line-groups on the substrate is set, two line-groups are symmetricly set in the ground wire two
Side.
5. measurement jig according to claim 4, it is characterised in that the line-group includes some cablings, it is some it is described walk
Line one end is disposed in proximity to the ground wire, and the other end is arranged on the side of the substrate.
6. measurement jig according to claim 5, it is characterised in that the line-group includes eight cablings.
7. measurement jig according to claim 5, it is characterised in that the attachment means include some coaxial connectors,
Each coaxial connector connects a cabling.
8. measurement jig according to claim 6, it is characterised in that the attachment means include eight coaxial connectors,
One cabling of each corresponding connection of the coaxial connector.
9. measurement jig according to claim 1, it is characterised in that the screening arrangement is made of metal material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510400754.0A CN104991126B (en) | 2015-07-08 | 2015-07-08 | The measurement jig of network transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400754.0A CN104991126B (en) | 2015-07-08 | 2015-07-08 | The measurement jig of network transformer |
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| CN104991126A CN104991126A (en) | 2015-10-21 |
| CN104991126B true CN104991126B (en) | 2018-03-06 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107505515B (en) * | 2017-07-10 | 2019-07-09 | 华南农业大学 | Network transformer LCR measurement method and device based on network actual transmission signal |
| CN110609177A (en) * | 2019-09-06 | 2019-12-24 | 深圳欧陆通电子股份有限公司 | Transformer testing device |
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| CN101852829A (en) * | 2009-12-30 | 2010-10-06 | 西安开容电子技术有限责任公司 | Insertion loss testing device for lead type filter and design method thereof |
| CN201607505U (en) * | 2010-02-25 | 2010-10-13 | 深圳市普联技术有限公司 | Test suite for testing parameters of network signal transformer |
| CN202916347U (en) * | 2012-10-25 | 2013-05-01 | 西安开容电子技术有限责任公司 | Insertion loss test device of filtering and shielding integrated assembly |
| CN203191452U (en) * | 2013-01-05 | 2013-09-11 | 深圳振华富电子有限公司 | Insertion loss testing device for pin type EMI filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7956628B2 (en) * | 2006-11-03 | 2011-06-07 | International Business Machines Corporation | Chip-based prober for high frequency measurements and methods of measuring |
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2015
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852829A (en) * | 2009-12-30 | 2010-10-06 | 西安开容电子技术有限责任公司 | Insertion loss testing device for lead type filter and design method thereof |
| CN201607505U (en) * | 2010-02-25 | 2010-10-13 | 深圳市普联技术有限公司 | Test suite for testing parameters of network signal transformer |
| CN202916347U (en) * | 2012-10-25 | 2013-05-01 | 西安开容电子技术有限责任公司 | Insertion loss test device of filtering and shielding integrated assembly |
| CN203191452U (en) * | 2013-01-05 | 2013-09-11 | 深圳振华富电子有限公司 | Insertion loss testing device for pin type EMI filter |
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