CN112637089B

CN112637089B - Switch

Info

Publication number: CN112637089B
Application number: CN202011448220.2A
Authority: CN
Inventors: 卓美娟
Original assignee: Ruijie Networks Co Ltd
Current assignee: Ruijie Networks Co Ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2023-03-21
Anticipated expiration: 2040-12-09
Also published as: CN112637089A

Abstract

The invention discloses a switch, which is used for solving the technical problem of larger volume of the existing switch. The arrangement mode of the network transformer in the embodiment of the invention can be as follows: an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module is located and a second plane where each RJ45 port included in the RJ45 network port module is located is larger than 0 degree; or, at least two network transformers in the network transformer module are arranged into at least two rows, a first plane where a primary coil of each network transformer is located is parallel to a second plane where each RJ45 port included in the RJ45 network port module is located, and a projection of any first network transformer in the direction perpendicular to the second plane is partially overlapped with a second network transformer adjacent to the first network transformer in the direction perpendicular to the second plane, so that the occupied space of at least two network transformers can be reduced, the volume of the switch can be reduced, the manufacturing cost of the switch is reduced, and the user experience is improved.

Description

Switch

Technical Field

The invention relates to the technical field of electronic communication, in particular to a switch.

Background

A switch is a network device for electrical signal forwarding that provides an exclusive electrical signal path for any two network nodes accessing the switch. The switch usually includes a crystal plug (RJ 45) port, a network transformer, a Physical Layer (PHY) chip, and the like, where the RJ45 port is a main port for signal transmission, and a network transformer is usually disposed between the RJ45 port and the PHY chip, the network transformer is also called a network isolation transformer, an ethernet transformer, and a network filter, and the network transformer mainly has functions of signal transmission, impedance matching, waveform restoration, signal clutter suppression, high voltage isolation, and the like.

At least two network transformers are usually arranged in the switch, each network transformer comprises at least one group of isolation coils corresponding to the RJ45 ports, one end where a primary coil in the isolation coil of each network transformer is located is connected with one corresponding RJ45 port, and the other end where a secondary coil in the isolation coil of each network transformer is located is connected with the PHY chip. Fig. 1 is a schematic structural diagram of a switch provided in the prior art, and as shown in fig. 1, at least two network transformers are usually arranged in a row in the prior art, and for each network transformer, a first plane where a primary coil of the network transformer is located is parallel to a second plane where each RJ45 port included in the switch is located.

Therefore, a technical solution that can reduce the space occupied by at least two network transformers to reduce the size of the switch is needed.

Disclosure of Invention

The embodiment of the invention provides a switch, which is used for solving the technical problem of larger volume of the existing switch.

The present invention provides a switch, comprising: the system comprises a physical layer PHY chip, a network transformer module and a crystal plug RJ45 network port module, wherein the RJ45 network port module comprises an RJ45 port; the network transformer module comprises at least two network transformers, and each network transformer comprises at least one group of isolation coils;

an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module is located and a second plane where each RJ45 port included in the RJ45 network port module is located is larger than 0 degree; or the like, or, alternatively,

at least two network transformers in the network transformer module are arranged into at least two rows, a first plane where a primary coil of each network transformer is located is parallel to a second plane where each RJ45 port included in the RJ45 network port module is located, and the projection of any first network transformer on the direction parallel to the second plane is partially overlapped with the adjacent second network transformer on the direction perpendicular to the second plane;

the number of the isolation coils included in the network transformer module is the same as that of the RJ45 ports included in the RJ45 network port module, one end of each isolation coil of the network transformer where a primary coil is located is connected with one corresponding RJ45 port, and the other end of each isolation coil of the network transformer where a secondary coil is located is connected with the PHY chip.

Further, the switch further comprises: and at least one high-voltage capacitor is connected with at least two network transformers, wherein at least two network transformers connected with the same high-voltage capacitor share one filter circuit Bob Smith circuit.

Further, if an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module is located and a second plane where each RJ45 port included in the RJ45 network port module is located is greater than 0 degree, the network transformer module includes at least three network transformers, a plane where a primary coil of a third network transformer in the at least three network transformers is located and a plane where a primary coil of a fourth network transformer is located are perpendicular to the second plane where each RJ45 port included in the RJ45 network port module is located, and a plane where a primary coil of a fifth network transformer in the at least three network transformers is located is parallel to the second plane where each RJ45 port included in the RJ45 network port module is located.

Further, the third network transformer and the fourth network transformer are arranged close to the RJ45 network port module, and the fifth network transformer is arranged close to the PHY chip.

Further, the third network transformer, the fourth network transformer and the fifth network transformer are connected to the same high voltage capacitor.

Further, the primary taps of each isolation coil included in the third network transformer, the fourth network transformer and the fifth network transformer are connected to the same high-voltage capacitor after being respectively connected to the corresponding capacitor and the corresponding resistor.

Further, connection signal lines between the third network transformer, the fourth network transformer and the fifth network transformer and corresponding RJ45 ports are arranged in a cavity structure formed by the third network transformer, the fourth network transformer and the fifth network transformer; and the connection signal lines among the third network transformer, the fourth network transformer, the fifth network transformer and the PHY chip are arranged at the outer sides of the third network transformer, the fourth network transformer and the fifth network transformer far away from the cavity structure.

Further, if an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module is located and a second plane where each RJ45 port included in the RJ45 port module is located is greater than 0 degree, the network transformer module includes at least three network transformers, and a sixth network transformer, a seventh network transformer and an eighth network transformer of the at least three network transformers are connected end to form a triangular arrangement.

Further, if an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module is located and a second plane where each RJ45 port included in the RJ45 network port module is located is greater than 0 degree, the network transformer module includes at least two network transformers, and a plane where a primary coil of a ninth network transformer of the at least two network transformers is located and a plane where a primary coil of a tenth network transformer is located are perpendicular to the second plane where each RJ45 port included in the RJ45 network port module is located.

Further, each network transformer comprises two groups of isolation coils.

The arrangement mode of the network transformer in the embodiment of the invention can be as follows: an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module is located and a second plane where each RJ45 port included in the RJ45 network port module is located is larger than 0 degree; or at least two network transformers in the network transformer module are arranged into at least two rows, a first plane where a primary coil of each network transformer is located is parallel to a second plane where each RJ45 port included in the RJ45 network port module is located, and a projection of any first network transformer in a direction parallel to the second plane is partially overlapped with an adjacent second network transformer in a direction perpendicular to the second plane. Compared with the existing arrangement mode that at least two network transformers are arranged in a row, and for each network transformer, a first plane where primary coils of the network transformers are located is parallel to a second plane where each RJ45 port included in the RJ45 network port module is located, the embodiment of the invention can reduce the space occupied by at least two network transformers, thereby reducing the size of the switch, reducing the manufacturing cost of the switch and improving the user experience.

Drawings

Fig. 1 is a schematic structural diagram of a switch provided in the prior art;

fig. 2 is a schematic structural diagram of a first switch according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a second switch according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a third switch according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a fourth switch according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a fifth switch according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a first PCB board according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a sixth switch according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a second PCB board provided in the embodiment of the present invention;

fig. 10 is a schematic structural diagram of a seventh switch according to an embodiment of the present invention;

fig. 11 is a schematic diagram illustrating a power supply line pair and a filter capacitor according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of an eighth switch according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a ninth switch according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a tenth switch according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of an eleventh switch according to an embodiment of the present invention;

fig. 16 is a schematic structural diagram of a twelfth switch according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to reduce the size of the switch, the embodiment of the invention provides the switch.

Example 1:

fig. 2 is a schematic structural diagram of a first switch according to an embodiment of the present invention, and fig. 3 is a schematic structural diagram of a second switch according to an embodiment of the present invention, as shown in fig. 2 and fig. 3, the switch includes: the system comprises a physical layer PHY chip 21, a network transformer module 22 and a crystal plug RJ45 network port module 23, wherein the RJ45 network port module 23 comprises an RJ45 port; the network transformer module 22 comprises at least two network transformers, each network transformer comprising at least one set of isolation coils;

an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module 22 is located and a second plane where each RJ45 port included in the RJ45 network port module 23 is located is greater than 0 degree; or the like, or, alternatively,

at least two network transformers in the network transformer module 22 are arranged in at least two rows, a first plane where a primary coil of each network transformer is located is parallel to a second plane where each RJ45 port included in the RJ45 network port module 23 is located, and a projection of any first network transformer in a direction parallel to the second plane is partially overlapped with an adjacent second network transformer in a direction perpendicular to the second plane;

the number of the isolation coils included in the network transformer module 22 is the same as the number of the RJ45 ports included in the RJ45 network port module 23, one end of each isolation coil of the network transformer where a primary coil is located is connected with one corresponding RJ45 port, and the other end of each isolation coil of the network transformer where a secondary coil is located is connected with the PHY chip.

The switch provided in the embodiment of the present invention may be a local area network switch, a wide area network switch, or the like, and may be flexibly selected according to a requirement, which is not specifically limited in the embodiment of the present invention.

The switch may include a Physical Layer (PHY) chip 21, a network transformer module 22, and a crystal plug (RJ 45) port module 23, where the RJ45 port module 23 includes at least one RJ45 port in a normal case, and the number and arrangement of the RJ45 ports in the RJ45 port module 23 are not specifically limited in the embodiment of the present invention, and may be flexibly set according to requirements. The network transformer module 22 includes at least two network transformers, and each network transformer includes at least one set of isolation coils corresponding to one RJ45 port, that is, the isolation coils in the network transformers correspond to the RJ45 ports one to one. The embodiment of the invention does not specifically limit the specific model of the network transformer, for example, the network transformer can be an HST-48035DAR double-port POE network transformer and the like, and can be flexibly selected according to requirements.

In order to make the space occupied by the arrangement of at least two network transformers in the network transformer module 22 smaller, the embodiment of the present invention provides two different network transformer arrangement manners, which are described below.

The first arrangement is as follows: in order to reduce the space occupied by the arrangement of the at least two network transformers, an included angle formed by a first plane where the primary coil of at least one network transformer in the network transformer module 22 is located and a second plane where each RJ45 port included in the RJ45 network port module 23 is located is greater than 0 degree. Illustratively, as shown in FIG. 2: an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module 22 is located and a second plane where each RJ45 port included in the RJ45 network port module 23 is located is 90 degrees. In the embodiment of the present invention, if not specifically described, the left-right direction shown in the drawing is a direction parallel to the second plane where each RJ45 port included in the RJ45 port module 23 is located, and the up-down direction shown in the drawing is a direction perpendicular to the second plane where each RJ45 port included in the RJ45 port module 23 is located.

For convenience of understanding, in the embodiment of the present invention, when a first plane where a primary coil of the network transformer is located is parallel to a second plane where each RJ45 port included in the RJ45 port module 23 is located, a discharge mode of the network transformer is called lateral discharge; when a first plane on which the primary coil of the network transformer is located is perpendicular to a second plane on which each RJ45 port included in the RJ45 port module 23 is located, the discharge mode of the network transformer is referred to as vertical discharge.

The second arrangement is as follows: as shown in fig. 3: in order to reduce the space occupied by the arrangement of at least two network transformers, at least two network transformers in the network transformer module 22 are arranged in at least two rows, a first plane where primary coils of each network transformer are located is parallel to a second plane where each RJ45 port included in the RJ45 network port module 23 is located, that is, each network transformer is laterally arranged, and at least two network transformers in the network transformer module 22 are arranged in at least two rows, wherein a projection of any one of the first network transformers in the network transformer module 22 in a direction parallel to the second plane is partially overlapped with an adjacent second network transformer in a direction perpendicular to the second plane. Illustratively, in fig. 3, the projection of the leftmost (left and right as shown) network transformers of the row of network transformer modules 22 near the PHY chip 21 in a direction parallel to the second plane partially overlaps the leftmost (left and right as shown) network transformers of the row near the RJ45 module.

Typically, each network transformer includes at least one set of isolation coils corresponding to one RJ45 port, and the set of isolation coils corresponds to the RJ45 ports one to one. In the embodiment of the present invention, the number of isolation coils included in the network transformer module 22 is the same as the number of RJ45 ports included in the RJ45 network port module 23, one end where a primary coil in the isolation coil of each network transformer is located is connected to one corresponding RJ45 port, and the other end where a secondary coil in the isolation coil of each network transformer is located is connected to the PHY chip 21. Specifically, the specific connection mode between the isolation coil of the network transformer and the RJ45 port and the PHY chip 21 may be implemented by using the prior art, and is not described herein again.

The arrangement mode of the network transformers in the embodiment of the invention can be as follows: an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module is located and a second plane where each RJ45 port included in the RJ45 network port module is located is larger than 0 degree; or at least two network transformers in the network transformer module are arranged into at least two rows, a first plane where a primary coil of each network transformer is located is parallel to a second plane where each RJ45 port included in the RJ45 network port module is located, and a projection of any first network transformer in a direction parallel to the second plane is partially overlapped with an adjacent second network transformer in a direction perpendicular to the second plane. Compared with the existing arrangement mode that at least two network transformers are arranged in a row, and for each network transformer, a first plane where primary coils of the network transformers are located is parallel to a second plane where each RJ45 port included in the RJ45 network port module is located, the embodiment of the invention can reduce the space occupied by the at least two network transformers, thereby reducing the volume of the switch, reducing the manufacturing cost of the switch and improving the user experience.

Example 2:

in order to further reduce the size and manufacturing cost of the switch, on the basis of the above embodiment, in an embodiment of the present invention, the switch further includes: and at least one high-voltage capacitor is connected with at least two network transformers, wherein at least two network transformers connected with the same high-voltage capacitor share one filter circuit Bob Smith circuit.

Electromagnetic Compatibility (EMC) refers to the ability of a device or system to perform satisfactorily in its Electromagnetic environment and not to generate intolerable Electromagnetic interference with any device in its environment. EMC testing, which refers to the comprehensive evaluation of the Electromagnetic Interference (EMI) and the anti-Interference capability (EMS) of electronic products, is one of the most important indicators of product quality, and aims to detect the influence of Electromagnetic radiation generated by electrical products such as switches on human bodies, public power grids and other electrical products which normally work.

Taking a switch as an example, in order to ensure that the switch passes an EMC test, a filter circuit, i.e., a Bob Smith circuit, is usually arranged in a primary circuit in which a network transformer in the switch is connected to an RJ45 port, and the Bob Smith circuit is used to improve an impedance matching termination processing mode of the EMC, effectively filter out common mode interference, and reduce EMI radiation of about 10 DB.

Referring to fig. 1, in the prior art, at least two network transformers are arranged in a row, and for each network transformer, a first plane where a primary coil of the network transformer is located is parallel to a second plane where each RJ45 port included in the switch is located, and generally, each network transformer corresponds to one Bob Smith circuit, and this arrangement not only makes the switch bulky, but also increases the manufacturing cost.

In order to reduce the size of the switch and reduce the cost, the embodiment of the invention can also comprise at least one high-voltage capacitor on the premise of ensuring that the switch can pass the EMC test, wherein the at least one high-voltage capacitor is connected with at least two network transformers, and the at least two network transformers connected with the same high-voltage capacitor share one Bob Smith circuit, so that the size of the switch can be reduced and the cost can be reduced on the premise of ensuring that the switch can pass the EMC test.

Example 3:

in order to reduce the size of the switch, on the basis of the foregoing embodiments, in an embodiment of the present invention, if an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module 22 is located and a second plane where each RJ45 port included in the RJ45 network port module 23 is located is greater than 0 degree, and the network transformer module 22 includes at least three network transformers, a plane where a primary coil of a third network transformer of the at least three network transformers is located and a plane where a primary coil of a fourth network transformer is located are both perpendicular to the second plane where each RJ45 port included in the RJ45 network port module 23 is located, and a plane where a primary coil of a fifth network transformer of the at least three network transformers is located is parallel to the second plane where each RJ45 port included in the RJ45 network port module 23 is located.

If at least two network transformers in the network transformer module 22 are arranged in the first arrangement manner, that is, an included angle formed between a first plane where a primary coil of at least one network transformer in the network transformer module 22 is located and a second plane where each RJ45 port included in the RJ45 port module 23 is located is greater than 0 degree, when the network transformer module 22 includes at least three network transformers, the arrangement manner of the network transformers included in the network transformer module 22 is specifically as follows.

Fig. 4 is a schematic structural diagram of a third switch according to an embodiment of the present invention, and fig. 5 is a schematic structural diagram of a fourth switch according to an embodiment of the present invention, as shown in fig. 4 and fig. 5, a plane in which a primary coil of a third network transformer of the at least three network transformers is located and a plane in which a primary coil of a fourth network transformer is located are both perpendicular to a second plane in which each RJ45 port included in the RJ45 network port module 23 is located, and meanwhile, a plane in which a primary coil of a fifth network transformer of the at least three network transformers is located is parallel to a second plane in which each RJ45 port included in the RJ45 network port module 23 is located.

Specifically, referring to fig. 4, the network transformers in the network transformer module 22 may be arranged in such a manner that the third network transformer and the fourth network transformer are disposed near the RJ45 network port module 23, and the fifth network transformer is disposed near the PHY chip 21, that is, the network transformers in the network transformer module 22 are arranged in a pi shape.

Referring to fig. 5, the network transformers in the network transformer module 22 may also be arranged in a manner that a third network transformer and a fourth network transformer are disposed near the PHY chip 21, and a fifth network transformer is disposed near the RJ45 network port module 23, that is, arranged in an inverted pi shape.

In order to reduce the size of the switch, on the basis of the above embodiments, in an embodiment of the present invention, each network transformer includes two sets of the isolation coils.

In one possible embodiment, for each network transformer in the network transformer module 22, the network transformer includes two sets of isolation coils corresponding to one RJ45 port, and each set of isolation coils is connected to one RJ45 port in a one-to-one correspondence relationship, that is, the network transformer is a dual-port network transformer. Compared with a four-port network transformer, the double-port network transformer can further reduce the size of the exchanger.

In order to reduce the size of the switch, on the basis of the above embodiments, in an embodiment of the present invention, the third network transformer, the fourth network transformer, and the fifth network transformer are connected to the same high-voltage capacitor.

For convenience of understanding, the switch provided in the embodiment of the present invention is described below by using a specific embodiment. The structure of the switch provided in the embodiment of the present invention is described by taking an example that each network transformer in the network transformer module 22 is a dual-port network transformer, and at least three network transformers included in the network transformer module 22 are arranged in a pi-shaped arrangement.

Fig. 6 is a schematic structural diagram of a fifth switch according to an embodiment of the present invention, as shown in fig. 6: the third network transformer, the fourth network transformer and the fifth network transformer included in the network transformer module 22 are all connected with the same high-voltage capacitor, and the third network transformer, the fourth network transformer and the fifth network transformer share one Bob Smith circuit. For convenience of understanding, the switch provided in the embodiment of the present invention is explained below with reference to a Printed Circuit Board (PCB) diagram, and fig. 7 is a schematic diagram of a first PCB provided in the embodiment of the present invention, as shown in fig. 7, a third network transformer, a fourth network transformer, and a fifth network transformer are respectively connected to corresponding impedance matching resistors (75 ohm resistors) and then connected to the same high-voltage capacitor, so as to form a Bob Smith Circuit.

In order to facilitate the setting of a connection signal line between a network transformer and an RJ45 port and a connection signal line between a network transformer and a PHY chip 21, on the basis of the foregoing embodiments, in an embodiment of the present invention, the connection signal lines between the third network transformer, the fourth network transformer, and the fifth network transformer and corresponding RJ45 ports are set in a cavity structure formed by the third network transformer, the fourth network transformer, and the fifth network transformer; and connection signal lines among the third network transformer, the fourth network transformer, the fifth network transformer and the PHY chip are arranged at the outer sides of the third network transformer, the fourth network transformer and the fifth network transformer, which are far away from the cavity structure.

The connection circuit between the network transformer and the RJ45 port is typically referred to as the primary circuit and the connection circuit between the network transformer and the PHY chip 21 is referred to as the secondary circuit. In one possible embodiment, the connection signal lines between the third, fourth and fifth network transformers and the corresponding RJ45 ports, i.e. the connection signal lines of the primary circuit, may be arranged in a cavity structure formed by the third, fourth and fifth network transformers; the connection signal lines between the third, fourth and fifth network transformers and the PHY chip 21, i.e., the secondary circuit connection signal lines, may be disposed outside the third, fourth and fifth network transformers away from the cavity structure.

For convenience of understanding, fig. 8 is a schematic structural diagram of a sixth switch provided in the embodiment of the present invention, and fig. 9 is a schematic structural diagram of a second PCB provided in the embodiment of the present invention, as shown in fig. 8 and fig. 9: wiring areas of connecting signal lines between the third network transformer, the fourth network transformer and the fifth network transformer and corresponding RJ45 ports, namely, wiring areas of a primary circuit are positioned in a cavity structure formed by the third network transformer, the fourth network transformer and the fifth network transformer; the wiring areas of the connection signal lines between the third network transformer, the fourth network transformer, the fifth network transformer and the PHY chip 21, that is, the wiring areas of the secondary circuits, are located outside the cavity structure formed by the third network transformer, the fourth network transformer and the fifth network transformer.

In order to enable a third network transformer, a fourth network transformer and a fifth network transformer to share one Bob Smith circuit, on the basis of the foregoing embodiments, in an embodiment of the present invention, primary taps of each isolation coil included in the third network transformer, the fourth network transformer and the fifth network transformer are respectively connected to a corresponding capacitor and a corresponding resistor, and then connected to the same high-voltage capacitor.

Taking a third network transformer as an example of a dual-port network transformer, fig. 10 is a schematic structural diagram of a seventh switch according to an embodiment of the present invention, and as shown in fig. 10, one end of a first isolation coil of the third network transformer includes P1A + and P1A-; P1B +, P1B-; P1C +, P1C-; P1D +, P1D-the four primary differential line pairs (primary MDI line in the primary circuit), for a total of 8 primary differential lines. Similarly, one end of the second isolation coil of the third network transformer comprises P2A + and P2A-; P2B +, P2B-; P2C +, P2C-; and P2D +, P2D-the four primary differential line pairs (primary MDI lines), for a total of 8 primary differential lines. Each RJ45 port includes eight RJ45 port pins of 1, 2 … …, respectively. That is, each group of coils includes the same number of primary differential lines as the number of RJ45 port pins included in the corresponding RJ45 port, and each primary differential line is connected to one corresponding RJ45 port pin.

In addition, the third network transformer, the fourth network transformer and the fifth network transformer share one Bob Smith circuit, which is formed as shown in fig. 10, and for example, the third network transformer is used, the primary tap of the first isolation coil and the primary tap of the second isolation coil in the third network transformer are connected to the high-voltage capacitor C0 after being connected to corresponding capacitors and corresponding resistors, wherein the capacitors may be dc blocking capacitors C1, C2, C3, C4 or C5 on the primary coil side of the network transformer, and the capacitors C1, C2, C3, C4 and C5 may be respectively connected to the primary taps P1-MCT, P2-MCT, NEG2, NEG1 and POE-54V; the resistance may be an impedance matching resistance (75 ohm resistance) R1, R2, R3, R4, or R5. The embodiment of the invention does not specifically limit the specific types and parameters of the tap blocking capacitor at the primary coil side of the network transformer and the impedance matching resistor, and can be flexibly selected according to requirements, for example, the tap blocking capacitor at the primary coil side of the network transformer can be a 0603-103J 50V capacitor, the error range of the impedance matching resistor can be +/-1%, the resistance value of the resistor is 75ohm, the 0603 packaging resistor and the like.

Accordingly, the primary tap of the third isolation winding and the primary tap of the fourth isolation winding in the fourth network transformer are also connected to the high-voltage capacitor C0 after connecting the corresponding capacitor and resistor (not shown). Similarly, after the primary tap of the fifth isolation coil and the primary tap of the sixth isolation coil in the fifth network transformer are connected with corresponding capacitors and resistors (not shown), the fifth network transformer and the sixth isolation coil are also connected with the high-voltage capacitor C0, so that the third network transformer, the fourth network transformer and the fifth network transformer share one Bob Smith circuit. In addition, one end of the high-voltage capacitor C0 is connected to the third network transformer, the fourth network transformer and the fifth network transformer, and the other end of the high-voltage capacitor C0 is connected to a Protection Ground (PGND). The embodiment of the invention does not specifically limit the specific model and parameters of the high-voltage capacitor, and can be flexibly set according to requirements. In one possible embodiment, a 1206 1nf high voltage capacitor, and in particular, a 1206-102K-2KV high voltage capacitor, may be selected in order to reduce switch area and cost.

In addition, the other end of the first isolation coil of the third network transformer comprises P1A + ', P1A-'; P1B + ', P1B-'; P1C + ', P1C-'; the four pairs of secondary differential line pairs (secondary MDI lines in the secondary circuit) P1D + ', P1D-' total 8 secondary differential lines. Similarly, the other end of the second isolation coil of the third network transformer comprises P2A + ', P2A-'; P2B + ', P2B-'; P2C + ', P2C-'; P2D '+, P2D' -these four pairs of secondary differential line pairs (secondary MDI lines), for a total of 8 secondary differential lines. Each secondary differential line is connected with a corresponding resistor, namely a secondary MDI series resistor R6, R7, R8 … … R21, one end of the secondary MDI series resistor is connected with the secondary differential line, the other end of the secondary MDI series resistor is connected with the PHY chip 21, and the secondary MDI series resistor is mainly used for lightning protection. The specific model and parameters of the secondary MDI series resistor can be flexibly set according to requirements, for example, the error range of the resistor can be +/-1%, the resistance value of the resistor is 1ohm, the resistance value of the 0402 packaged resistor and the like.

The center taps of the secondary MDI lines of the third network transformer are connected to corresponding secondary tap capacitors C6, C7, C8 … … C27, C28, and C29, one ends of the secondary tap capacitors are connected to corresponding secondary MDI line center taps, and the other ends of the secondary tap capacitors are connected to the wire Ground (GND) of the PCB. The specific model and parameters of the secondary tap capacitor can be flexibly set according to requirements, and the embodiment of the invention is not particularly limited to this.

In a possible embodiment, the switch may be a Power Over Ethernet (POE) switch, where POE refers to a technology capable of providing dc Power for some IP-based terminals (such as IP phones, wireless lan access points AP, webcams, etc.) while transmitting data signals for such devices, without any modification to the existing Ethernet cat.5 wiring infrastructure, and is a switch supporting Power Over Ethernet.

The POE switch includes a power supply line pair POE-54V and POE-54VGND, fig. 11 is a schematic diagram illustrating connection between the power supply line pair and the filter capacitor provided in the embodiment of the present invention, as shown in fig. 11, the power supply line pair is disposed close to the RJ45 gateway module 23, and the power supply line pair is respectively connected to the corresponding filter capacitors C30, C31, and C32 … … C37, and in addition, the backup filter capacitors C38, C39, and C40 … … C43 may also be preset, and in a possible implementation manner, the power supply line pair may also be connected to the corresponding backup filter capacitors C38, C39, and C40 … … C43. The specific model and parameters of the filter capacitor and the specific model and parameters of the spare filter capacitor are not specifically limited, and can be flexibly set according to requirements, for example, the filter capacitor can be a capacitor packaged by 102/2KV 1206, and the spare filter capacitor can be a capacitor packaged by 1812/10nf/2KV and the like.

Fig. 12 is a schematic structural diagram of an eighth switch according to an embodiment of the present invention, and as shown in fig. 12, the pair of power supply lines POE-54V and POE-54VGND are respectively connected to the corresponding diodes D1, D2, D3 … … D12, one end of each diode is connected to the corresponding power supply line, and the other end of each diode is connected to the corresponding primary tap NEG1, NEG2, NEG3 … … NEG6 of the network transformer. The type of the diode can be flexibly set according to requirements, and for example, the type of the diode can be M7_ FM 4007.

In addition, the power supply line pair POE-54V and POE-54VGND are respectively connected with corresponding piezoresistors RV1 and RV2 … … RV6, one end of each piezoresistor is connected with the power supply line pair, and the other end of each piezoresistor is connected with PGND.

One end of a central tap of a non-power supply wire pair of the switch is connected with piezoresistors RV7, RV8, … … and RV12, the other end of the central tap is connected with PGND, one end of each piezoresistor is connected with a central tap of the non-power supply wire pair, and the other end of each piezoresistor is connected with primary taps P1_ MCT, P2_ MCT, P3_ MCT and … … P6_ MCT. The diode and the piezoresistor arranged in the switch are mainly used for forming a surge protection circuit and playing a role in preventing lightning for a power supply circuit in the switch. The specific types and parameters of the piezoresistors can be flexibly selected according to requirements, for example, the piezoresistors of 361KD14J,360V and 4.5KA can be selected for RV1, RV2 and RV 3; RV4, RV5 and RV6 can adopt piezoresistors of 431KD14J,430V and 4.5KA; the RV7 and RV8 … … RV12 can be 361KD10J piezoresistors and the like.

Fig. 13 is a schematic structural diagram of a ninth switch according to an embodiment of the present invention, and as shown in fig. 13, the switch includes not only a surge protection circuit but also a filter circuit, that is, a Bob Smith circuit, which are combined to protect electronic components in the switch from being damaged, and also perform better filtering on noise, so as to ensure the quality of an electrical signal while ensuring the safe operation of the switch.

In a possible implementation, to reduce the cost, the PCB board of the switch may be a four-layer board including, from TOP to BOTTOM, a TOP layer (TOP layer), a reference layer (GND layer), a power layer (power layer), and a BOTTOM layer (BOTTOM layer), respectively. Wherein the TOP layer and the BOTTOM layer are layers in which signal lines are mainly arranged. In addition, in order to prevent signal crosstalk, the primary MDI signal lines at the top layer and the bottom layer need to be crossed and wired when the primary MDI signal lines are wired, and long-distance overlapping wiring is avoided.

When the secondary MDI circuit is wired, the reference layer corresponding to the secondary MDI signal line is complete, the reference layer can isolate the signal lines of the top layer and the bottom layer, and when the secondary MDI signal line is wired, the secondary MDI signal lines of the top layer and the bottom layer can be wired without staggering, and the wiring is only required to pay attention to the ground.

In a possible implementation manner, fig. 14 is a schematic structural diagram of a tenth switch according to an embodiment of the present invention, as shown in fig. 14, the switch may include at least one PHY chip 21, and in order to prevent a filter loop from being formed, two screws may be disposed around the at least one PHY chip 21, one end of the two screws is connected to the PCB, and the other end of the two screws is connected to a switch housing (not shown), so that noise can be safely flowed into the ground. In addition, the connection mode between the PHY chip 21 and the network transformer port in the network transformer module 22 may adopt the prior art, which is not specifically limited in this embodiment of the present invention.

Example 4:

in order to reduce the size of the switch, on the basis of the above embodiments, in the embodiment of the present invention, if an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module 22 is located and a second plane where each RJ45 port included in the RJ45 network port module 23 is located is greater than 0 degree, and the network transformer module 22 includes at least three network transformers, a sixth network transformer, a seventh network transformer, and an eighth network transformer of the at least three network transformers are connected end to form a triangular arrangement.

Fig. 15 is a schematic structural diagram of an eleventh switch according to an embodiment of the present invention, as shown in fig. 15, if the network transformer module 22 includes at least two network transformers in the first arrangement manner, that is, an included angle formed between a first plane where a primary coil of at least one network transformer in the network transformer module 22 is located and a second plane where each RJ45 port included in the RJ45 port module 23 is located is greater than 0 degree, and the network transformer module 22 includes at least three network transformers, a sixth network transformer, a seventh network transformer, and an eighth network transformer of the at least three network transformers may be arranged in a triangular manner by joining end to end, which may reduce a space occupied by the network transformers compared with an existing arrangement manner in which the sixth network transformer, the seventh network transformer, and the eighth network transformer are arranged in a row, and for each network transformer, the first plane where the primary coil of the network transformer is located and the second plane where each RJ45 port included in the RJ45 port module 23 are parallel, so that a volume occupied by the network transformers can be reduced, and a user experience of manufacturing cost is improved.

In a possible embodiment, in order to reduce the switch area and cost, the sixth network transformer, the seventh network transformer and the eighth network transformer may be connected to the same high-voltage capacitor, i.e., share one Bob Smith circuit. The manner in which the sixth network transformer, the seventh network transformer, and the eighth network transformer are connected to the same high-voltage capacitor may be the same as in the above embodiments, and details are not repeated herein.

Example 5:

in order to reduce the size of the switch, on the basis of the foregoing embodiments, in an embodiment of the present invention, if an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module 22 is located and a second plane where each RJ45 port included in the RJ45 network port module 23 is located is greater than 0 degree, and the network transformer module 22 includes at least two network transformers, a plane where a primary coil of a ninth network transformer of the at least two network transformers is located and a plane where a primary coil of a tenth network transformer is located are both perpendicular to the second plane where each RJ45 port included in the RJ45 network port module 23 is located.

Fig. 16 is a schematic structural diagram of a twelfth switch according to an embodiment of the present invention, as shown in fig. 16, if the network transformers adopt the first arrangement, that is, an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module 22 is located and a second plane where each RJ45 port included in the RJ45 network port module 23 is located is greater than 0 degree, and the network transformer module 22 includes at least two network transformers, a plane where a primary coil of a ninth network transformer in the at least two network transformers is located and a plane where a primary coil of a tenth network transformer is located are both perpendicular to a second plane where each RJ45 port included in the RJ45 network port module 23 is located, that is, the ninth network transformer and the tenth network transformer are both vertically arranged, compared with the prior art, the ninth network transformer and the tenth network transformer are both arranged in a row, and for each network transformer, the first plane where primary coils of the network transformers are located and the second plane where each RJ45 port included in the RJ45 network port module 23 are located are both vertically arranged, a row, and a user experience of the switch can be reduced.

In one possible embodiment, to reduce the switch area and cost, the ninth network transformer and the tenth network transformer may be connected to the same high-voltage capacitor, i.e., share one Bob Smith circuit. The connection modes of the ninth network transformer, the tenth network transformer and the same high-voltage capacitor can be flexibly set according to requirements, and the embodiment of the invention is not particularly limited to this.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A switch, characterized in that the switch comprises: the system comprises a physical layer PHY chip, a network transformer module and a crystal plug RJ45 network port module, wherein the RJ45 network port module comprises an RJ45 port; the network transformer module comprises at least two network transformers, and each network transformer comprises at least one group of isolation coils;

the number of the isolation coils included in the network transformer module is the same as that of the RJ45 ports included in the RJ45 network port module, one end of each isolation coil of the network transformer where a primary coil is located is connected with one corresponding RJ45 port, and the other end of each isolation coil of the network transformer where a secondary coil is located is connected with the PHY chip;

if an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module is located and a second plane where each RJ45 port included in the RJ45 network port module is located is greater than 0 degree, the network transformer module includes at least three network transformers, a plane where a primary coil of a third network transformer in the at least three network transformers is located and a plane where a primary coil of a fourth network transformer is located are both perpendicular to the second plane where each RJ45 port included in the RJ45 network port module is located, and a plane where a primary coil of a fifth network transformer in the at least three network transformers is located is parallel to the second plane where each RJ45 port included in the RJ45 network port module is located; alternatively, the first and second liquid crystal display panels may be,

if an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module is located and a second plane where each RJ45 port included in the RJ45 port module is located is greater than 0 degree, the network transformer module includes at least three network transformers, and a sixth network transformer, a seventh network transformer and an eighth network transformer in the at least three network transformers are connected end to form triangular arrangement; alternatively, the first and second electrodes may be,

if an included angle formed by a first plane where a primary coil of at least one network transformer in the network transformer module is located and a second plane where each RJ45 port included in the RJ45 network port module is located is greater than 0 degree, the network transformer module includes at least two network transformers, and a plane where a primary coil of a ninth network transformer in the at least two network transformers is located and a plane where a primary coil of a tenth network transformer is located are perpendicular to the second plane where each RJ45 port included in the RJ45 network port module is located.

2. The switch of claim 1, further comprising: the high-voltage capacitor is connected with at least two network transformers, and at least two network transformers connected with the same high-voltage capacitor share one filter circuit BobSmith circuit.

3. The switch of claim 1, wherein the third network transformer and the fourth network transformer are disposed proximate to the RJ45 portal module and the fifth network transformer is disposed proximate to the PHY chip.

4. The switch of claim 1, wherein the third network transformer, the fourth network transformer, and the fifth network transformer are connected to the same high voltage capacitor.

5. The switch of claim 4, wherein the primary taps of each isolation coil included in the third, fourth, and fifth network transformers are connected to the same high voltage capacitor after connecting to a corresponding capacitor and a corresponding resistor, respectively.

6. The switch according to claim 4, characterized in that the connection signal lines between the third, fourth and fifth network transformers and the corresponding RJ45 ports are arranged within a cavity structure consisting of the third, fourth and fifth network transformers; and the connection signal lines among the third network transformer, the fourth network transformer, the fifth network transformer and the PHY chip are arranged at the outer sides of the third network transformer, the fourth network transformer and the fifth network transformer far away from the cavity structure.

7. The switch according to any of claims 1-6, wherein each of said network transformers comprises two respective sets of said isolation windings.