CN212907226U - Computer cable for automatic identification system - Google Patents

Abstract

The utility model discloses a computer cable for automatic identification system, including the outmost restrictive coating, by the restrictive coating is inwards, has set gradually first shielding layer, metal level and multiunit be the sinle silk group of ring array arrangement, and first shielding layer is total shielding layer; the metal level does and aluminium foil layer, and sinle silk group is including having two sinle silks of pair twist integrated configuration and indulging the second shielding layer of package with the sinle silk after the pair twist combination, the branch shielding layer of second shielding layer. The utility model discloses a computer cable reduces mutual crosstalk and external disturbance between the return circuit, and the cable adopts branch shielding and total shielding structure. The utility model discloses a shielding requirement of cable adopts: the braided shield coverage rate is not less than 80 percent by using the method of the twisted-pair combined shield and the total shield after the twisted-pair combined shield. The first braided shielding layer and the second braided shielding layer are both made of round copper wires and aluminum-plastic composite belts through a braiding process, and have a good shielding effect.

Description

Computer cable for automatic identification system

Technical Field

The utility model relates to a cable, specific saying so relates to an automatic computer cable for identification system.

Background

With the increase of the automatic identification system of the expressway, the using amount of a computer cable for the automatic identification system for the expressway is rapidly increased, and the quality requirement of the computer cable for the automatic identification system is continuously improved. Therefore, it is necessary to develop a computer cable for an automatic identification system, which has low dielectric loss, strong signal transmission capability, and can reliably transmit weak analog signals.

SUMMERY OF THE UTILITY MODEL

To the deficiency among the prior art, the to-be-solved technical problem of the utility model lies in providing a computer cable for automatic identification system, designs this computer cable for automatic identification system's purpose and improves the transmission biography ability to can transmit weak analog signal.

In order to solve the technical problem, the utility model discloses a following scheme realizes: the utility model discloses an automatic computer cable for identification system, including outermost restrictive coating, by the restrictive coating is inside, has set gradually:

the first shielding layer is a total shielding layer;

a metal layer, and

the multiunit is the sinle silk group that the ring array was arranged, sinle silk group is including having two sinle silks to hinge integrated configuration and will indulge the second shielding layer of package to the sinle silk after the hinge combination, the branch shielding layer of second shielding layer.

Further, the first shielding layer is a first braided shielding layer.

Still further, the coverage of the first braided shield layer is not less than 80%.

Furthermore, the first braided shielding layer is of a longitudinal wrapping structure formed by braiding a round copper wire and an aluminum-plastic composite tape.

Further, the metal layer is an aluminum foil layer.

Further, the conductor is arranged inside the wire core, and the insulating layer is arranged outside the wire core.

Further, the second shielding layer is a second braided shielding layer.

Still further, the coverage of the second braided shield layer is not less than 80%.

Furthermore, the second braided shielding layer is of a longitudinal wrapping structure formed by braiding a round copper wire and an aluminum-plastic composite tape.

Furthermore, filler is arranged at the gap between the wire core groups.

Furthermore, a filler is arranged in a gap between the two wire cores and the second shielding layer.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an automatic computer cable reduces mutual crosstalk and external disturbance between return circuit for identification system, and the cable adopts branch shielding and total shielding structure. The utility model discloses a shielding requirement of cable adopts: the braided shield coverage rate is not less than 80 percent by using the method of the twisted-pair combined shield and the total shield after the twisted-pair combined shield.

The first braided shielding layer and the second braided shielding layer are both made of round copper wires and aluminum-plastic composite belts through a braiding process, and have a good shielding effect.

The suppression coefficient of the shielding coefficient of the cable is small and is not more than 0.01.

The maximum capacitive imbalance of the shielded cable to ground is less than or equal to 500 pF.

The utility model discloses a cable withstand voltage test 1000V 1min does not puncture.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of the computer cable of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making more clear and definite definitions of the protection scope of the present invention. It is obvious that the described embodiments of the invention are only some of the embodiments of the invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Embodiment 1, the utility model discloses a specific structure as follows:

referring to fig. 1, the utility model discloses a computer cable for automatic identification system, including outmost restrictive coating 1, by restrictive coating 1 is inside, has set gradually:

the first shielding layer 2 is a total shielding layer;

a metal layer 3, and

the multiunit is the sinle silk group that the ring array was arranged, sinle silk group is including having two sinle silks to the hinge integrated configuration and will indulge the second shielding layer 7 of package to the sinle silk after the hinge combination, the branch shielding layer of second shielding layer 7.

A preferred technical solution of this embodiment: the first shielding layer 2 is a first braided shielding layer.

A preferred technical solution of this embodiment: the coverage rate of the first braided shielding layer is not less than 80%.

A preferred technical solution of this embodiment: the first braided shielding layer is of a longitudinal wrapping structure formed by braiding a round copper wire and an aluminum-plastic composite belt.

A preferred technical solution of this embodiment: the metal layer 3 is an aluminum foil layer.

A preferred technical solution of this embodiment: inside the core is a conductor 4, outside of which is an insulating layer 6.

A preferred technical solution of this embodiment: the second shielding layer 7 is a second braided shielding layer.

A preferred technical solution of this embodiment: the coverage rate of the second braided shielding layer is not less than 80%.

A preferred technical solution of this embodiment: the second braided shielding layer is of a longitudinal wrapping structure formed by braiding a round copper wire and an aluminum-plastic composite belt.

A preferred technical solution of this embodiment: and a filler 5 is arranged at the gap between the wire core groups.

A preferred technical solution of this embodiment: and a filler 5 is arranged at a gap between the two wire cores and the second shielding layer 7.

Example 2:

in order to reduce mutual crosstalk and external interference between the return circuits, the utility model discloses an automatic computer cable adopts branch shielding and total shielding structure for identification system. The shielding requirements of the cable are as follows: the method of the pair-twisted combined shielding and the total shielding after the pair-twisted combined shielding has the weaving shielding coverage rate of not less than 80 percent;

the utility model discloses a material that shielding layer was woven to first braided shield and second is round copper line, the shielding layer that the compound area of aluminum-plastic formed through weaving process preparation. The first braided shielding layer and the second braided shielding layer have good shielding effect.

The utility model discloses an automatic computer cable shielding coefficient suppression coefficient is little for identification system, is no longer than 0.01.

The utility model discloses an automatic identification system is with computer cable to ground maximum capacitance unbalance value is less than or equal to 500pF with shielding effect.

The utility model discloses an automatic identification system is with computer cable withstand voltage test 1000V 1min, does not puncture.

Example 3:

the utility model discloses an automatic computer cable for identification system improves and material optimization through technology, and the transmission attenuation of cable has improved 10-15%, and relative time delay is less than 490ns 100 m.

Example 4:

the insulating layer and the sheath layer material of the utility model do not contain heavy metals, meet the requirements of European Union ROHS and have no pollution to the environment.

Example 5:

preparation the utility model discloses an automatic computer cable for identification system adopts the full-automatic back twist type twisted pair of high accuracy, and the transposition pitch is even stable, and the product has characteristics such as interference immunity and impedance stability and transmission performance are good.

Example 6:

preparation the utility model discloses an automatic computer cable for identification system adopts is full-automatic suspension wall cable-former, reduces the stranding bending angle, improves the line pair degree of balance within a definite time.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.

Claims (10)

1. The utility model provides an automatic computer cable for identification system, includes outermost restrictive coating (1), its characterized in that, by restrictive coating (1) is inside, has set gradually:

the first shielding layer (2) is a total shielding layer;

a metal layer (3), and

the wire core group that the multiunit is ring array and arranges, wire core group is including having two sinle silks of pair twist integrated configuration and will pair the second shielding layer (7) of the sinle silk indulging package after the twist combination, the branch shielding layer of second shielding layer (7).

2. The computer cable for an automatic identification system as claimed in claim 1, wherein the first shielding layer (2) is a first braided shielding layer.

3. The computer cable for an automatic identification system as claimed in claim 2, wherein a coverage of the first braided shield layer is not less than 80%.

4. The computer cable for the automatic identification system as claimed in claim 2, wherein the first braided shield layer has a longitudinal covering structure woven from a round copper wire and an aluminum-plastic composite tape.

5. The computer cable for an automatic identification system as claimed in claim 1, wherein the metal layer (3) is an aluminum foil layer.

6. The computer cable for automatic identification system as claimed in claim 1, wherein the core is internally a conductor (4) and externally an insulating layer (6).

7. Computer cable for an automatic identification system according to claim 1, characterized in that the second shielding layer (7) is a second braided shielding layer.

8. The computer cable for an automatic identification system as claimed in claim 7, wherein a coverage of the second braided shield layer is not less than 80%.

9. The computer cable for an automatic identification system as claimed in claim 7, wherein the second braided shield layer is a longitudinal covering structure braided by a round copper wire and an aluminum-plastic composite tape.

10. The computer cable for the automatic identification system as claimed in claim 1, wherein a filler is disposed in a gap between each core group, and a filler is disposed in a gap between the two core groups and the second shielding layer (7).

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