CN201877558U - Segmented gradual-change type leakage coaxial cable - Google Patents
Segmented gradual-change type leakage coaxial cable Download PDFInfo
- Publication number
- CN201877558U CN201877558U CN2010206634188U CN201020663418U CN201877558U CN 201877558 U CN201877558 U CN 201877558U CN 2010206634188 U CN2010206634188 U CN 2010206634188U CN 201020663418 U CN201020663418 U CN 201020663418U CN 201877558 U CN201877558 U CN 201877558U
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- cable
- coaxial cable
- leakage coaxial
- change type
- shielding layer
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Abstract
The utility model relates to a segmented gradual-change type leakage coaxial cable which comprises a conductor, an insulating layer, a shielding layer and a sheath layer, wherein the shielding layer is formed by connecting three sections of wire meshes, and the density degree of the wire meshes of the shielding layer is enhanced section by section. According to the principle that the cable has the dual transmission of transmission lines and antennas and the principle of coupling loss of the cable, the leakage coaxial cable is researched and developed, a conductor outside the cable is designed into three modes according to the strength of transmitted signals, so that the coupling loss of the cable is gradually changed according to three sections of different structural modes, the problem that the leakage rate is not uniform under strong and weak signals is solved, and the disadvantages that the omnibearing detection is easy to be misreported and the detection sensitivity is low due to unmatched impedance and distorted received signals caused by adopting a plurality of single leakage coaxial cables are overcome; and the leakage coaxial cable has the advantages of being simple and convenient to install and lay, and being greatly lower in cost.
Description
Technical field
The utility model belongs to field of cables, relates to leaky cable, especially a kind of segmentation gradual change type leaky coaxial cable.
Background technology
Along with development of science and technology, people are progressively improving the safety precaution product requirement in important place, safety-protection system as important places such as military base, government bodies, bank, prisons, not only to give the alarm to intrusion behavior, also need intrusion behavior to be analyzed, judged this has just proposed very high requirement to the cable of using in this field.At present, the cable signal leakage rate is inhomogeneous because the strong and weak inequality that transmits causes, signal receives inhomogeneous for system transmitter end, afterbody, present settling mode adopts the cable of many different outer conductor structures to rely on adapter to connect usually, but this mode certainly leads to impedance in the cable junction not to match, cause the received signal distortion, increase the cable laying cost simultaneously, and system of laying is loaded down with trivial details.
Summary of the invention
Order of the present invention is to overcome the deficiencies in the prior art part, provide a kind of and have the principle of transmission line and antenna duplicate transmissions and leaky cable coupling loss principle and the segmentation gradual change type leaky coaxial cable developed according to leaky coaxial cable, this cable has low decay, low-loss characteristics.
The utility model realizes that the technical scheme of purpose is as follows:
A kind of segmentation gradual change type leaky coaxial cable comprises conductor, insulating barrier, screen and restrictive coating, it is characterized in that: described screen is that three sections woven wires connect and compose, and the density of the woven wire of screen increases piecemeal.
And described insulating barrier is the three-layer insulated layer of physical blowing skin-bubble-Pi.
Advantage of the present utility model and good effect are:
1, this cable is designed to three kinds of forms with the power of a cable outer conductor basis signal emission, three sections different versions make the gradual change of cable coupling loss, solved the uneven problem of leakage rate under the strong and weak signals, overcome and used many single leakage coaxial cables because the shortcoming that comprehensive detection is easily reported by mistake, detectivity is low that impedance does not match, the received signal distortion is caused, and install, lay easy, greatly reduced cost.
2, it is three-layer insulated that the insulating barrier of this cable adopts skin-bubble-Pi, the center froth bed is a nitrogen inflation physical blowing polyethylene, but make cable have low decay, low-loss carry high frequency digital signal, realization is carried out intelligent decision to different objects such as animal, personnel, vehicles, confirm invasion or intention and the trend passed by, realized detection and strick precaution important place.
3, this cable has the principle of transmission line and antenna duplicate transmissions and leaky cable coupling loss principle according to leaky coaxial cable and develops and form, and the cable kilometer lengthening is installed, lays, debugs simple, with low cost; Cable adopts and buries installation underground, is difficult for invaded body and finds, destroys, and the detectivity height is widely used in important places such as military base, prison, museum, power station, government bodies, bank.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and by specific embodiment, and following examples are descriptive, are not determinate, can not limit protection range of the present utility model with this.
A kind of segmentation gradual change type leaky coaxial cable, constitute successively from inside to outside by conductor 1, insulating barrier 2, screen (3,4,5) and restrictive coating 6 are coaxial, conductor adopts the copper cover aluminum core, insulating barrier is physical blowing skin-three-layer insulated material of bubble-Pi, and screen is a woven wire, employing be the unique shielding constructions of three sections interconnective density gradual change types, the density that is the woven wire of screen increases piecemeal, in the present embodiment, screen 3 is the closeest, and screen 5 is the thinnest; Oversheath adopts flame-proof polyvinyl chloride.
The manufacture of this cable is general mode, does not repeat them here.
Claims (2)
1. a segmentation gradual change type leaky coaxial cable comprises conductor, insulating barrier, screen and restrictive coating, it is characterized in that: described screen is that three sections woven wires connect and compose, and the density of the woven wire of screen increases piecemeal.
2. segmentation gradual change type leaky coaxial cable according to claim 1 is characterized in that: described insulating barrier is the three-layer insulated layer of physical blowing skin-bubble-Pi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206634188U CN201877558U (en) | 2010-12-16 | 2010-12-16 | Segmented gradual-change type leakage coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206634188U CN201877558U (en) | 2010-12-16 | 2010-12-16 | Segmented gradual-change type leakage coaxial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877558U true CN201877558U (en) | 2011-06-22 |
Family
ID=44165468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206634188U Expired - Lifetime CN201877558U (en) | 2010-12-16 | 2010-12-16 | Segmented gradual-change type leakage coaxial cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877558U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108353492A (en) * | 2015-10-05 | 2018-07-31 | 塞勒姆电子与微波工业应用研究公司 | With coaxial applicator, the basic device for generating plasma |
| CN109859884A (en) * | 2019-01-29 | 2019-06-07 | 苏州矽米亚尔电子有限公司 | A kind of audio video transmission line |
-
2010
- 2010-12-16 CN CN2010206634188U patent/CN201877558U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108353492A (en) * | 2015-10-05 | 2018-07-31 | 塞勒姆电子与微波工业应用研究公司 | With coaxial applicator, the basic device for generating plasma |
| CN108353492B (en) * | 2015-10-05 | 2020-08-25 | 塞勒姆电子与微波工业应用研究公司 | Basic device for generating plasma with coaxial applicator |
| CN109859884A (en) * | 2019-01-29 | 2019-06-07 | 苏州矽米亚尔电子有限公司 | A kind of audio video transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tianjin Hengteer Wire & Cable Co., Ltd. Assignor: Zhiheng (Tianjin) Industrial Co., Ltd. Contract record no.: 2011120000150 Denomination of utility model: Segmented gradual-change type leakage coaxial cable Granted publication date: 20110622 License type: Exclusive License Record date: 20110817 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |