CN202903819U - Fully-shielded coaxial probe assembly - Google Patents
Fully-shielded coaxial probe assembly Download PDFInfo
- Publication number
- CN202903819U CN202903819U CN 201220566712 CN201220566712U CN202903819U CN 202903819 U CN202903819 U CN 202903819U CN 201220566712 CN201220566712 CN 201220566712 CN 201220566712 U CN201220566712 U CN 201220566712U CN 202903819 U CN202903819 U CN 202903819U
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- Prior art keywords
- coaxial
- insulation course
- closing member
- probe
- nook closing
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- Expired - Lifetime
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Abstract
The utility model provides a fully-shielded coaxial probe assembly which comprises a coaxial film-coated probe, a metal sleeve, a matching resistor, an insulation sleeve and an outer sleeve. The matching resistor is connected with the coaxial film-coated probe and a coaxial cable, the head and the tail of the metal sleeve are welded together with a metal film layer of the coaxial film-coated probe and a coaxial cable outer conductive layer respectively, the insulation sleeve carries out insulation protection on a bare pin core, the matching resistor and a bare core wire part, a full coaxial structure of the assembly is formed, and the effects of impedance matching and complete shielding are achieved. The fully-shielded coaxial probe assembly is applicable to the high-precision and anti-electromagnetic-interference measurement of the time interval between explosion and shock processes.
Description
Technical field
The utility model relates to a kind of full-shield coaxial probe assembly, the time interval test macro that is applied to explode and measures with impact process detonation wave speed, shock velocity and free surface velocity.
Background technology
In blast and impact process, be used for the time interval test macro electrical resistivity survey skill of handling needles commonly used of detonation wave speed, shock velocity and free surface velocity measurement as the signal acquisition means, electric probe is " travel switch " of surveying high-speed motion in essence, when detonation wave, shock wave and film flying etc. reach the responsive part of electric probe place section, the electric probe on off state is undergone mutation, and causes corresponding pulse forming network to export the signal that clocks.
Show at Huang Zhengping in " blast and impact electric detecting technology ", several electric probe structures commonly used have been introduced, comprise polished rod probe, block probe and coaxial probe etc., wherein, the effect of coaxial probe structure impact has the speed of response and the stronger antijamming capability that is exceedingly fast, and is applied to the test occasion of high-precision requirement.But for blast and impact process test macro, probe at first is connected to transmission cable by lead-in wire, again by be connected to pulse forming network and the signal recorder of safety zone than the longer transmission cable, because the impedance mismatch of probe and transmission cable, cause that thereby the signal leading edge Quality Down affects measuring accuracy, simultaneously, because probe and the non-full-shield structure of transmission cable connected mode, thereby the normal identification that undesired signal affects echo signal may be introduced.
Summary of the invention
The signal quality problem of introducing in order to overcome existing test macro middle probe and transmission cable impedance mismatch and the non-full-shield of connected mode, the utility model provides a kind of full-shield coaxial probe assembly.Described full-shield coaxial probe assembly adopts build-out resistor to connect plated film coaxial probe and concentric cable, and realized the complete shielding construction of probe to concentric cable, be applicable to blast and the impact process time interval test macro of high precision, anti-electromagnetic interference (EMI) demand.
The technical solution adopted in the utility model is: a kind of full-shield coaxial probe assembly, be characterized in: described full-shield coaxial probe assembly comprises coaxial film-coated probe, metal sleeve, build-out resistor, insulating sleeve, outer tube, wherein, described coaxial film-coated probe is by nook closing member, insulation course, metallic diaphragm, mounting hole forms, the nook closing member periphery is provided with insulation course, the insulation course periphery is provided with metallic diaphragm, the top of nook closing member is coated in the insulation course, the nook closing member end exposes outside the insulation course, the insulation course end exposes outside the metallic diaphragm, and the end of nook closing member is provided with mounting hole.Its annexation is: the periphery of coaxial film-coated probe end is provided with metal sleeve, and the axis in metal sleeve is provided with insulating sleeve, is provided with build-out resistor on the axis in the insulating sleeve; Nook closing member is fixedly connected with build-out resistor one end pin by terminal mounting hole, and the other end pin of build-out resistor is fixedly connected with the coaxial cable heart yearn of external cable; The end of metallic diaphragm is fixedly connected with the mouth of pipe of metal sleeve, and the pipe tail of metal sleeve is fixedly connected with the coaxial cable outer conducting layer of external cable; Insulating sleeve one end is connected with the insulation course that coaxial film-coated probe exposes, and the insulating sleeve other end is connected with the coaxial cable insulating medium layer of external cable; Outer tube is arranged on the link periphery of the coaxial cable sheath of metal sleeve pipe tail and external cable.
The thickness of the insulation course of described nook closing member periphery is 0.03mm～0.04 mm.
The length that described nook closing member exposes insulation course is 2mm～3 mm.
The thickness of the metallic diaphragm of described insulation course periphery is 0.01mm.
The length that described insulation course exposes metallic diaphragm is 3mm～5 mm.
The coaxial film-coated probe nook closing member end that adopts has mounting hole, and nook closing member is outside to be applied one deck insulating material and expose the nook closing member end, the outside metal-coated membrane of insulation course and expose the insulation course end; The build-out resistor resistance that adopts equates with external coaxial cable characteristic impedance; The metal sleeve mouth of pipe welds with coaxial film-coated probe metallic diaphragm terminal part, metal sleeve pipe tail and the welding of coaxial cable outer conducting layer, and assembly has formed the full-shield structure; Insulating sleeve parcel build-out resistor, insulating sleeve one end covers the exposed insulation course of coaxial film-coated probe, the insulating sleeve other end connects the coaxial cable insulating medium layer, forms exposed nook closing member, build-out resistor, the exposed coaxial cable heart yearn part electrical isolation with metallic diaphragm, metal sleeve inwall, coaxial cable outer conducting layer; Adopt outer tube coated metal casing pipe tail and coaxial cable sheath near metal sleeve pipe tail bit, connecting portion is fixed protection.
The beneficial effect of full-shield coaxial probe assembly of the present utility model is: solved probe and external concentric cable impedance mismatch problem and overcome probe and the problem of the non-full-shield of external concentric cable connected mode, improve the signal leading edge quality, improved the system rejection to disturbance ability, can be applied to blast and the impact process time interval test macro of high-acruracy survey demand under the electromagnetic interference environment.
Description of drawings
Fig. 1 is the structural representation of full-shield coaxial probe assembly of the present utility model;
Fig. 2 is the structural representation of the coaxial film-coated probe in the full-shield coaxial probe assembly of the present utility model;
Among the figure, 1. coaxial film-coated probe 2. metal sleeves 3. build-out resistors 4. insulating sleeves 5. outer tubes 6. coaxial cable heart yearns 7. coaxial cable insulating medium layers 8. coaxial cable outer conducting layers 9. coaxial cable sheaths 11. nook closing members 12 insulation courses 13. metallic diaphragms 14. mounting holes.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of full-shield coaxial probe assembly of the present utility model, and Fig. 2 is the structural representation of the coaxial film-coated probe in the full-shield coaxial probe assembly of the present utility model.In Fig. 1, Fig. 2, full-shield coaxial probe assembly of the present utility model, comprise coaxial film-coated probe 1, metal sleeve 2, build-out resistor 3, insulating sleeve 4, outer tube 5, wherein, described coaxial film-coated probe 1 is comprised of nook closing member 11, insulation course 12, metallic diaphragm 13, mounting hole 14, nook closing member 11 peripheries are provided with insulation course 12, and insulation course 12 peripheries are provided with metallic diaphragm 13.The top of nook closing member 11 is coated in the insulation course 12, and nook closing member 11 ends expose outside the insulation course 12.The top of insulation course 12 is coated in the metallic diaphragm 13, and insulation course 12 ends expose outside the metallic diaphragm 13, and the end of nook closing member 11 is provided with mounting hole 14.Its annexation is: the periphery of coaxial film-coated probe 1 end is provided with metal sleeve 2, and the axis in metal sleeve 2 is provided with insulating sleeve 4, is provided with build-out resistor 3 on the axis in the insulating sleeve 4; Nook closing member 11 is by the end pin welding of terminal mounting hole 14 with build-out resistor 3, and the other end pin of build-out resistor 3 and the coaxial cable heart yearn of external cable 6 weld.The mouth of pipe welding of the end of metallic diaphragm 13 and metal sleeve 2, the pipe tail of metal sleeve 2 and 8 welding of the coaxial cable outer conducting layer of external cable.One end of insulating sleeve 4 welds with the insulation course 12 that coaxial film-coated probe 1 exposes, coaxial cable insulating medium layer 7 welding of the other end of insulating sleeve 4 and external cable.Outer tube 5 is arranged on the link periphery of the coaxial cable sheath 9 of metal sleeve 2 pipe tails and external cable.
In the present embodiment, insulation course 12 thickness of described nook closing member 11 peripheries are 0.03 mm.
The length that described nook closing member 11 exposes insulation course 12 is 2 mm.
The length that described insulation course 12 exposes metallic diaphragm 13 is 3 mm.
The coaxial cable characteristic impedance of adopting is 75 Ω, and build-out resistor 3 resistances are 75 Ω.
Described nook closing member 11 materials are brass, and the insulating material of insulation course 12 is teflon, and metallic diaphragm 13 materials are gold, and metal sleeve 2 materials are brass, and insulating sleeve 5 is material contracting with heat, and outer tube 6 is material contracting with heat.
Embodiment 2
Present embodiment is identical with the basic structure of embodiment 1.Difference is, the coaxial cable characteristic impedance of adopting is 50 Ω, and build-out resistor 3 resistances are 50 Ω.
In the present embodiment, insulation course 12 thickness of described nook closing member 11 peripheries are 0.04 mm.
The length that described nook closing member 11 exposes insulation course 12 is 3 mm.
The length that described insulation course 12 exposes metallic diaphragm 13 is 5 mm.
Described metallic diaphragm 13 materials are silver.
Claims (5)
1. full-shield coaxial probe assembly, it is characterized in that: described assembly comprises coaxial film-coated probe (1), metal sleeve (2), build-out resistor (3), insulating sleeve (4), outer tube (5), wherein, described coaxial film-coated probe (1) is by nook closing member (11), insulation course (12), metallic diaphragm (13), mounting hole (14) forms, nook closing member (11) periphery is provided with insulation course (12), insulation course (12) periphery is provided with metallic diaphragm (13), the top of nook closing member (11) is coated in the insulation course (12), nook closing member (11) end exposes outside the insulation course (12), insulation course (12) end exposes outside the metallic diaphragm (13), and the end of nook closing member (11) is provided with mounting hole (14); Its annexation is: the terminal periphery of coaxial film-coated probe (1) is provided with metal sleeve (2), and the axis in metal sleeve (2) is provided with insulating sleeve (4), is provided with build-out resistor (3) on the axis in the insulating sleeve (4); Nook closing member (11) is fixedly connected with build-out resistor (3) one end pins by terminal mounting hole (14), and the other end pin of build-out resistor (3) is fixedly connected with the coaxial cable heart yearn (6) of external cable; The end of metallic diaphragm (13) is fixedly connected with the mouth of pipe of metal sleeve (2), and the pipe tail of metal sleeve (2) is fixedly connected with the coaxial cable outer conducting layer (8) of external cable; One end of insulating sleeve (4) is connected with the insulation course (12) that coaxial film-coated probe (1) exposes, and the other end of insulating sleeve (4) is connected with the coaxial cable insulating medium layer (7) of external cable; Outer tube (5) is arranged on the link periphery of the coaxial cable sheath (9) of metal sleeve (2) pipe tail and external cable.
2. full-shield coaxial probe assembly according to claim 1 is characterized in that: peripheral insulation course (12) thickness of described nook closing member (11) is 0.03mm～0.04mm.
3. full-shield coaxial probe assembly according to claim 1, it is characterized in that: the length that described nook closing member (11) exposes insulation course (12) is 2mm～3 mm.
4. full-shield coaxial probe assembly according to claim 1 is characterized in that: peripheral metallic diaphragm (13) thickness of described insulation course (12) is 0.01mm.
5. full-shield coaxial probe assembly according to claim 1, it is characterized in that: the length that described insulation course (12) exposes metallic diaphragm (13) is 3mm～5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220566712 CN202903819U (en) | 2012-10-31 | 2012-10-31 | Fully-shielded coaxial probe assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220566712 CN202903819U (en) | 2012-10-31 | 2012-10-31 | Fully-shielded coaxial probe assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202903819U true CN202903819U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220566712 Expired - Lifetime CN202903819U (en) | 2012-10-31 | 2012-10-31 | Fully-shielded coaxial probe assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202903819U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167622A (en) * | 2017-06-22 | 2017-09-15 | 中国工程物理研究院流体物理研究所 | A kind of curved coaxial probe assembly |
| CN107192845A (en) * | 2017-06-22 | 2017-09-22 | 中国工程物理研究院流体物理研究所 | The installation fastener and method of a kind of straight coaxial probe component |
| TWI634335B (en) * | 2017-08-29 | 2018-09-01 | 旺矽科技股份有限公司 | Coaxial probe structure |
| CN113740656A (en) * | 2021-09-28 | 2021-12-03 | 歌尔股份有限公司 | Testing device |
| CN114323392A (en) * | 2022-03-11 | 2022-04-12 | 中国工程物理研究院流体物理研究所 | Probe, probe assembly, measuring device and measuring method for detonation test |
-
2012
- 2012-10-31 CN CN 201220566712 patent/CN202903819U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167622A (en) * | 2017-06-22 | 2017-09-15 | 中国工程物理研究院流体物理研究所 | A kind of curved coaxial probe assembly |
| CN107192845A (en) * | 2017-06-22 | 2017-09-22 | 中国工程物理研究院流体物理研究所 | The installation fastener and method of a kind of straight coaxial probe component |
| CN107167622B (en) * | 2017-06-22 | 2023-08-08 | 中国工程物理研究院流体物理研究所 | Bent coaxial probe assembly |
| CN107192845B (en) * | 2017-06-22 | 2023-08-08 | 中国工程物理研究院流体物理研究所 | Mounting and fastening device and method for straight coaxial probe assembly |
| TWI634335B (en) * | 2017-08-29 | 2018-09-01 | 旺矽科技股份有限公司 | Coaxial probe structure |
| CN113740656A (en) * | 2021-09-28 | 2021-12-03 | 歌尔股份有限公司 | Testing device |
| CN113740656B (en) * | 2021-09-28 | 2023-11-21 | 歌尔股份有限公司 | test device |
| CN114323392A (en) * | 2022-03-11 | 2022-04-12 | 中国工程物理研究院流体物理研究所 | Probe, probe assembly, measuring device and measuring method for detonation test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |
|
| CX01 | Expiry of patent term |