CN203479880U - Open type impedance matching connector used for pulse high current measurement - Google Patents
Open type impedance matching connector used for pulse high current measurement Download PDFInfo
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- CN203479880U CN203479880U CN201320602733.3U CN201320602733U CN203479880U CN 203479880 U CN203479880 U CN 203479880U CN 201320602733 U CN201320602733 U CN 201320602733U CN 203479880 U CN203479880 U CN 203479880U
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Abstract
The utility model discloses an open type impedance matching connector used for pulse high current measurement. The open type impedance matching connector used for the pulse high current measurement comprises a T head, an N-type head, a first supporting plate, a second supporting plate, a third supporting plate and frameworks; the frameworks penetrate through the first supporting plate, the second supporting plate and the third supporting plate in sequence; the frameworks between the second supporting plate and the third supporting plate are provided with resistors; one terminals of the resistors are connected with outer side plate surfaces of the frameworks in a conducting manner; the other terminals of the resistors are connected with inner side plate surfaces of the frameworks in a conducting manner; the T head is fixedly arranged on the front plate surface of the first supporting plate; and the N-type head is fixedly arranged on a back plate surface of the third supporting plate. According to the open type impedance matching connector used for the pulse high current measurement, the problems that module values of the impedance matching connectors change with frequencies and temperature change affects the precision of the current measurement under 10 A-100 A and 50 Hz-200 kHz are solved, and the rise time is simultaneously reduced.
Description
Technical field
The utility model relates to a kind of open impedance matching connector of measuring for pulse high current.
Background technology
Pulse high current measurement mainly contains Rogowski coil and two kinds of methods of impedance matching connector.Rogowski coil is to carry out the large electric current of indirect ranging pulse by electromagnetic induction, although it has good step response time, complex structure, sample resistance is had to higher requirement, and accuracy is not high.It is the large electric current of pulse voltage signal ranging pulse pulse current by impedance transition that impedance matching connector adopts, although principle is fairly simple, but measure the pulse current of several ns of rise time, must consider the factors such as distributed capacitance, inductance, skin effect and impedance matching.
The restriction of the large electric current of impedance matching connector ranging pulse is mainly manifested in three aspects.First, during the large electric current of ranging pulse, the alternating-current parameter of impedance matching connector becomes an AC impedance, and the mould value of impedance is along with frequency change, the voltage of the measuring junction of impedance matching connector also can, with frequency change, reduce pulse high current accuracy of measurement greatly.In audiorange, resistance value is less than the resistance of 10 ohm and is easily perception, and resistance value is greater than the resistance of 10 ohm and is easily capacitive.When measuring large electric current, resistance value is all very little, and the inductance parameters impact of impedance matching connector is large; When measuring little electric current, resistance value is larger, and the capacitance parameter impact of impedance matching connector is larger, and the impact of the input capacitance of the voltage table of measuring voltage can further increase the weight of this impact.Secondly, the power transfer that pulse current consumes on impedance matching connector resistance becomes heat energy, makes the heating of impedance matching connector, and resistance value changes with temperature, thereby the accuracy of electric current is measured in impact.Finally, pulse current by impedance matching connector after, the impedance magnitude of shunt may change not quite, but due to rise time impact, the pulse current of pulse voltage signal and input generation additional phase shift.
Utility model content
The purpose of this utility model is to improve the defect of prior art, and a kind of open impedance matching connector of measuring for pulse high current is provided.This open impedance matching connector has solved impedance matching connector mould value under 10A～100A, 50Hz～200kHz and, with the problem of frequency change and influence of temperature change current measurement accuracy, has reduced the rise time simultaneously.
For achieving the above object, the utility model provides a kind of open impedance matching connector of measuring for pulse high current, and described connector comprises: fourth head, N-type head, the first back up pad, the second back up pad, the 3rd back up pad and skeleton;
Positive plate face and the backboard face of described the first back up pad are conducting face; The positive plate face of described the second back up pad is conducting face, and the backboard face of described the second back up pad is insulating surfaces; The positive plate face of described the 3rd back up pad is insulating surfaces, and the backboard face of described the 3rd back up pad is conducting face; Outer panel face and the interior plate face of described skeleton are conducting face;
Described skeleton is successively through the first back up pad, the second back up pad and the 3rd back up pad, the outer panel face of described skeleton respectively with the positive plate face of the first back up pad and the backboard face of the 3rd back up pad fixedly conducting be connected;
The interior plate face of described skeleton respectively with the backboard face of the first back up pad and the positive plate face of the second back up pad fixedly conducting be connected;
Skeleton between the second back up pad and the 3rd back up pad is provided with resistance, and one end of described resistance is connected with the outer panel face conducting of skeleton, and the other end of described resistance is connected with the interior plate face conducting of skeleton;
Described fourth head is packed on the positive plate face of the first back up pad, and the backboard face of the anode of this fourth head and described the first back up pad fixedly conducting is connected, and the positive plate face of the negative terminal of fourth head and described the first back up pad fixedly conducting is connected;
Described N-type head is packed on the backboard face of the 3rd back up pad, and the positive plate face of the anode of this N-type head and described the second back up pad fixedly conducting is connected, and the backboard face of the negative terminal of N-type head and described the 3rd back up pad fixedly conducting is connected.
Further, the quantity of described skeleton is 36, and 36 skeletons are circumferentially decile setting along the first back up pad.
Further, the quantity of described resistance is 8.
Further, described fixedly conducting is connected to the connection of perforation circuit scolding tin.
Further, the positive plate face of described the first back up pad, the positive plate face of the backboard face of the first back up pad, the second back up pad, the backboard face of the 3rd back up pad, the interior plate face of the outer panel face of skeleton and skeleton is copper facing face.
The utility model is compared with existing product, has following actively useful effect:
1, the utility model has solved under 10A～100A, 50Hz～200kHz impedance matching connector mould value with the problem of frequency change and influence of temperature change current measurement accuracy, reduces the rise time (being the reaction time of electric current while being converted into voltage by impedance matching connector) simultaneously.
2, adopt open coaxial-symmetrical structure can reduce external magnetic field impact, symmetric coaxial mode has reduced electric capacity and the inductive impact of HF link simultaneously, adopts sheet copper as connecting wire, has reduced skin effect.
3, impedance matching connector select that power is large, the resistance of bandwidth, good stability, the accuracy of this resistance has guaranteed stable performance.
4, adopt open physical arrangement to realize to greatest extent cross-ventilation, make impedance matching connector temperature coefficient minimum, thereby guaranteed impedance matching connector steady resistance characteristic in very wide range of current.
Accompanying drawing explanation
Fig. 1 is one of structural representation of the present utility model.
Fig. 2 is two of structural representation of the present utility model.
Fig. 3 is structure side view of the present utility model.
Fig. 4 is structure connection diagram of the present utility model.
Fig. 5 is the syndeton schematic diagram between the first back up pad in the utility model, the second back up pad, the 3rd back up pad and skeleton.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
As shown in Fig. 1 to 5, a kind of open impedance matching connector of measuring for pulse high current, described connector comprises: fourth 1, N-type the 2, first back up pad 3, the second back up pad 4, the 3rd back up pad 5 and skeleton 6; The quantity of described skeleton 6 is 36, and 36 skeletons 6 are circumferentially decile setting along the first back up pad 3.
Described skeleton 6 is successively through the first back up pad 3, the second back up pad 4 and the 3rd back up pad 5, and the outer panel face 61 of described skeleton 6 is connected with the positive plate face 31 of the first back up pad 3 and the backboard face of the 3rd back up pad 5 52 perforation circuit scolding tin respectively;
The interior plate face 62 of described skeleton 6 is connected with the backboard face 32 of the first back up pad 3 and the positive plate face of the second back up pad 4 41 perforation circuit scolding tin respectively;
On each skeleton 6 in 36 skeletons 6, be equipped with 8 resistance 7, the position of described resistance 7 is arranged on the skeleton 6 between the second back up pad 4 and the 3rd back up pad 5, one end of resistance 7 is connected with outer panel face 61 conductings of skeleton 6, and the other end of described resistance 7 is connected with interior plate face 62 conductings of skeleton 6.
Described fourth 1 is packed on the positive plate face 31 of the first back up pad 3, and the anode of this fourth 1 is connected with the backboard face 32 perforation circuit scolding tin of described the first back up pad 3, and the negative terminal of fourth 1 and the positive plate face 31 of described the first back up pad 3 circuit scolding tin of boring a hole are connected;
Described N-type 2 is packed on the backboard face 52 of the 3rd back up pad 5, and the anode of this N-type 2 is connected with the positive plate face 41 perforation circuit scolding tin of described the second back up pad 4, and the negative terminal of N-type 2 and the backboard face 52 of described the 3rd back up pad 5 circuit scolding tin of boring a hole are connected.
Below each assembly of the utility model is introduced respectively:
Fourth 1:
Fourth 1 model is L29-J7, and one end is coaxial Female joint, and external diameter is 270mm, and there is screw thread outside; The other end is the corrosion resistant plate of 32mm * 32mm, four jiaos respectively have 1 Φ 4mm screw hole, the anode of fourth 1 is Φ 4mm red copper post, leaves that 16mm is long to be connected with backboard face 32 scolding tin of the first back up pad 3, and the negative terminal of fourth 1 and the positive plate face 31 of the first back up pad 3 circuit scolding tin of boring a hole are connected.This fourth 1 can shield external electromagnetic interference, and 100A pulse current raises by not causing the temperature that affects result, pulsed current signal can be passed to circuit.
The first back up pad 3:
Skeleton 6:
The second back up pad 4:
The positive plate face 41 of described the second back up pad 4 is copper facing face, and the backboard face 42 of described the second back up pad 4 is insulating surfaces, and inside is FR4 plastics; The second back up pad 4 is 200mm * 200mm * 30mm circuit board, and thickness is 0.5mm.
Resistance 7:
The 3rd back up pad 5:
The positive plate face 51 of described the 3rd back up pad 5 is insulating surfaces, and the backboard face 52 of described the 3rd back up pad 5 is copper facing face, and inside is FR4 plastics; The 3rd back up pad 5 is 200mm * 200mm * 30mm circuit board, and thickness is 0.5mm.
N-type 2:
N-type 2 one end are coaxial Female joint, and external diameter is 160mm, and there is screw thread outside; The corrosion resistant plate of other end 18mm * 18mm, four jiaos respectively have 1 Φ 2.5mm screw hole, the anode of N-type 2 is Φ 1mm red copper post, leaves that 30mm is long to be connected with positive plate face 41 scolding tin of the second back up pad 4, and the negative terminal of N-type 2 and the backboard face 52 of the 3rd back up pad 5 circuit scolding tin of boring a hole are connected.N-type 2 advantages of good shielding performance, the pulse signal of 200kHz can can't harm transmission.
Principle of work of the present utility model is:
Pulse high current forward current is connected to the backboard face 32 of the first back up pad 3 by the anode of fourth 1, the backboard face 32 of the first back up pad 3 is connected with the interior plate face 62 of 36 skeletons 6 simultaneously, between the outer panel face 61 of each skeleton 6 and interior plate face 62, be provided with 8 resistance 7, the outer panel face 61 of skeleton 6 is connected with the positive plate face 31 of the first back up pad 3, the negative terminal of the positive plate face 31 of the first back up pad 3 and fourth 1 is to being connected, and electric current has just formed a loop like this.
Circuit is equal to 288 resistance parallel connections, and because resistance parameter is identical, the electric current of every resistance, power should be identical.Every resistance current flowing 0.347A, consumed power is 0.347W, is less than rated power.
The interior plate face 62 of skeleton 6 and the positive plate face 41 of the second back up pad 4 are connected simultaneously, and the outer panel face 61 of skeleton 6 is connected with the backboard face 52 of the 3rd back up pad 5; The anode of the positive plate face 41 of the second back up pad 4 and N-type 2 is connected, and the negative terminal of the backboard face 52 of the 3rd back up pad 5 and N-type 2 is connected.Anode, the negative terminal of N-type 2 are exactly the pulse voltage that electric current produces through resistance like this.Under normal temperature state, measure the resistance value of the different frequency of impedance matching connector, can use impedance matching connector pulsed current measurement current amplitude.
Open impedance matching connector is because pulse current is all positive and negative mobile in opposite directions between copper facing plate face, coaxial configuration has effectively reduced skin effect, Open architecture has reduced temperature influence factor, and open impedance matching connector can be measured the Measurement accuracy of the pulse current of 10A～100A current amplitude scope, 50Hz～200kHz repetition frequency range.
The word in the description orientation that adopted herein " on ", D score, " left side ", " right side " etc. are all convenience in order to illustrate based on the orientation shown in drawing in accompanying drawing, in actual device, these orientation may be different due to the disposing way of device.
In sum, embodiment described in the utility model only provides a kind of embodiment of the best, technology contents of the present utility model and technical characterstic disclose as above, yet are familiar with the content that the personage of the technology still may disclose based on the utility model and do various replacement and the modifications that do not deviate from creation spirit of the present invention; Therefore, protection domain of the present utility model is not limited to the technology contents that embodiment discloses, therefore all equivalences of doing according to shape of the present utility model, structure and principle change, is all encompassed in protection domain of the present utility model.
Claims (5)
1. an open impedance matching connector of measuring for pulse high current, is characterized in that:
Described connector comprises: fourth head (1), N-type head (2), the first back up pad (3), the second back up pad (4), the 3rd back up pad (5) and skeleton (6);
Positive plate face (31) and the backboard face (32) of described the first back up pad (3) are conducting face;
The positive plate face (41) of described the second back up pad (4) is conducting face, and the backboard face (42) of described the second back up pad (4) is insulating surfaces;
The positive plate face (51) of described the 3rd back up pad (5) is insulating surfaces, and the backboard face (52) of described the 3rd back up pad (5) is conducting face;
Outer panel face (61) and the interior plate face (62) of described skeleton (6) are conducting face;
Described skeleton (6) is successively through the first back up pad (3), the second back up pad (4) and the 3rd back up pad (5), the outer panel face (61) of described skeleton (6) respectively with the positive plate face (31) of the first back up pad (3) and the backboard face (52) of the 3rd back up pad (5) fixedly conducting be connected;
The interior plate face (62) of described skeleton (6) respectively with the backboard face (32) of the first back up pad (3) and the positive plate face (41) of the second back up pad (4) fixedly conducting be connected;
Skeleton (6) between the second back up pad (4) and the 3rd back up pad (5) is provided with resistance (7), one end of described resistance (7) is connected with outer panel face (61) conducting of skeleton (6), and the other end of described resistance (7) is connected with interior plate face (62) conducting of skeleton (6);
Described fourth head (1) is packed on the positive plate face (31) of the first back up pad (3), the backboard face (32) of the anode of this fourth head (1) and described the first back up pad (3) fixedly conducting is connected, and the positive plate face (31) of the negative terminal of fourth head (1) and described the first back up pad (3) fixedly conducting is connected;
Described N-type head (2) is packed on the backboard face (52) of the 3rd back up pad (5), the positive plate face (41) of the anode of this N-type head (2) and described the second back up pad (4) fixedly conducting is connected, and the backboard face (52) of the negative terminal of N-type head (2) and described the 3rd back up pad (5) fixedly conducting is connected.
2. a kind of open impedance matching connector of measuring for pulse high current according to claim 1, is characterized in that: the quantity of described skeleton (6) is 36, and 36 skeletons (6) are circumferentially decile setting along the first back up pad (3).
3. a kind of open impedance matching connector of measuring for pulse high current according to claim 1, is characterized in that: the quantity of described resistance (7) is 8.
4. a kind of open impedance matching connector of measuring for pulse high current according to claim 1, is characterized in that: described fixedly conducting is connected to perforation circuit scolding tin and connects.
5. a kind of open impedance matching connector of measuring for pulse high current according to claim 1, is characterized in that: the positive plate face (41) of the positive plate face (31) of described the first back up pad (3), the backboard face (32) of the first back up pad (3), the second back up pad (4), the backboard face (52) of the 3rd back up pad (5) are, the interior plate face (62) of the outer panel face (61) of skeleton (6) and skeleton (6) is copper facing face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320602733.3U CN203479880U (en) | 2013-09-27 | 2013-09-27 | Open type impedance matching connector used for pulse high current measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320602733.3U CN203479880U (en) | 2013-09-27 | 2013-09-27 | Open type impedance matching connector used for pulse high current measurement |
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| Publication Number | Publication Date |
|---|---|
| CN203479880U true CN203479880U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320602733.3U Expired - Fee Related CN203479880U (en) | 2013-09-27 | 2013-09-27 | Open type impedance matching connector used for pulse high current measurement |
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| CN (1) | CN203479880U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891555A (en) * | 2016-05-25 | 2016-08-24 | 中国人民解放军61489部队 | Multi-section gradually-changing coaxial type component high-voltage fast pulse response test fixture |
| CN106093523A (en) * | 2016-06-21 | 2016-11-09 | 福建省计量科学研究院 | A kind of I V changer |
| CN108169532A (en) * | 2018-03-06 | 2018-06-15 | 大连理工大学 | A kind of removable noninductive current divider of high-precision fast-response |
-
2013
- 2013-09-27 CN CN201320602733.3U patent/CN203479880U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891555A (en) * | 2016-05-25 | 2016-08-24 | 中国人民解放军61489部队 | Multi-section gradually-changing coaxial type component high-voltage fast pulse response test fixture |
| CN105891555B (en) * | 2016-05-25 | 2018-08-17 | 中国人民解放军61489部队 | A kind of more piece gradual change coaxial-type element high pressure fast pulse response test fixture |
| CN106093523A (en) * | 2016-06-21 | 2016-11-09 | 福建省计量科学研究院 | A kind of I V changer |
| CN108169532A (en) * | 2018-03-06 | 2018-06-15 | 大连理工大学 | A kind of removable noninductive current divider of high-precision fast-response |
| CN108169532B (en) * | 2018-03-06 | 2023-12-15 | 大连理工大学 | Detachable high-precision quick-response noninductive shunt |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20150927 |
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| EXPY | Termination of patent right or utility model |