CN219761026U

CN219761026U - Power supply transmission circuit and device

Info

Publication number: CN219761026U
Application number: CN202320982312.1U
Authority: CN
Inventors: 李建
Original assignee: Shenzhen Eeguard Technology Co ltd
Current assignee: Shenzhen Eeguard Technology Co ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-09-26
Anticipated expiration: 2033-04-21

Abstract

The embodiment of the utility model discloses a power supply transmission circuit and a device, wherein the power supply transmission circuit comprises: the power supply device comprises a first common-mode inductance module, a second common-mode inductance module, a first signal end transformer and a second signal end transformer, wherein at a power supply end, the power supply module is connected with the first end of the first common-mode inductance module, the second end of the first common-mode inductance module is connected with the first end of the first signal end transformer, and the two primary sides of the first signal end transformer are loaded on two-wire lines; and at the power receiving end of the other end of the two-wire circuit, the two-wire circuit is connected to the power receiving module through the second common mode inductance module after passing through the two primary sides of the first end of the second signal end transformer. The method solves the problems of complex circuit, difficult debugging, low video resolution and high product cost when a broadband power line carrier chip is added in the two-line transmission scheme in the prior art.

Description

Power supply transmission circuit and device

Technical Field

The utility model relates to the technical field of network power transmission, in particular to a power transmission circuit and a device.

Background

Two transmission schemes in the security industry exist at present; an analog audio and video carrier wave is transmitted to a power line through FM modulation and ASK modulation, and the defects are complex circuit, difficult debugging and low video resolution; the other is to use a broadband power line carrier chip to transmit the network signal carrier to the power line, which has the disadvantage of adding the broadband power line carrier chip and making the cost of the product very high.

Disclosure of Invention

The embodiment of the utility model aims to provide a power supply transmission circuit and a device, which are used for solving the problems of complex circuit, difficult debugging, low video resolution and very high product cost when a broadband power line carrier chip is added in a two-line transmission scheme in the prior art.

To achieve the above object, an embodiment of the present utility model provides a power transmission circuit, including: the first common-mode inductance module, the second common-mode inductance module, the first signal terminal transformer and the second signal terminal transformer, wherein,

at the power supply end, the power supply module is connected with the first end of the first common-mode inductance module, the second end of the first common-mode inductance module is connected with the first end of the first signal-end transformer, and the two primary sides of the first signal-end transformer are loaded on two-line circuits;

and at the power receiving end of the other end of the two-wire circuit, the two-wire circuit is connected to the power receiving module through the second common mode inductance module after passing through the two primary sides of the first end of the second signal end transformer.

Optionally, a first PHY chip and a second PHY chip are also included, wherein,

the first PHY chip is connected with the second end of the first signal end transformer;

the second PHY chip is connected with a second end of the second signal end transformer.

Optionally, the device further comprises a first impedance matching module and a second impedance matching module, wherein,

the first impedance matching module is connected with the primary side of the first end of the first signal end transformer;

the second impedance matching module is connected with the primary side of the first end of the second signal end transformer.

Optionally, a first protective capacitor and a second protective capacitor are also included, wherein,

the first protection capacitor is connected with the first signal end transformer;

the second protection capacitor is connected with the second signal end transformer.

Optionally, the signals of the power supply end and the power receiving end belong to mirror image connection, and the signals on the two-wire line pass through (0.5ct+0.5ct): 1CT, and performing signal isolation transmission of 1:1.

To achieve the above object, an embodiment of the present utility model provides a power transmission device including the power transmission circuit as described in any one of the above.

The embodiment of the utility model has the following advantages:

an embodiment of the present utility model provides a power supply transmission circuit, including: the power supply device comprises a first common-mode inductance module, a second common-mode inductance module, a first signal end transformer and a second signal end transformer, wherein at a power supply end, the power supply module is connected with the first end of the first common-mode inductance module, the second end of the first common-mode inductance module is connected with the first end of the first signal end transformer, and the two primary sides of the first signal end transformer are loaded on two-wire lines; and at the power receiving end of the other end of the two-wire circuit, the two-wire circuit is connected to the power receiving module through the second common mode inductance module after passing through the two primary sides of the first end of the second signal end transformer.

Compared with the prior art, the utility model uses 10BASE-T1L to directly load the network signal to the power line for transmission, has simple circuit and simpler debugging, has the cost far lower than that of a broadband power line carrier chip scheme, and basically meets the high-definition transmission of audio and video.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.

Fig. 1 is a schematic diagram of a power transmission circuit according to an embodiment of the present utility model.

Detailed Description

Other advantages and advantages of the present utility model will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. 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. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

An embodiment of the present utility model provides a power transmission circuit, referring to fig. 1, including: a first common-mode inductance module 11, a second common-mode inductance module 21, a first signal-side transformer 12, and a second signal-side transformer 22, wherein,

at the power supply end (i.e. on the side of T1 in fig. 1), a power supply module (PSE module in fig. 1) is connected to a first end (terminals 1 and 3 in T1 in fig. 1) of the first common-mode inductance module 11, and a second end (terminals 14 and 16 in T1 in fig. 1) of the first common-mode inductance module 11 is connected to a first end (terminals 10 and 11 in T1 in fig. 1) of the first signal-side transformer 12, and two primary sides of the first signal-side transformer 12 are loaded onto two-wire lines (two-wire lines in fig. 1 are connected to terminals 9 and 12 of T1);

at the receiving end (i.e., the side of T2 in fig. 1) of the other end of the two-wire line, the two-wire line passes through the two primary sides of the first end (terminals 9 and 12 in T2 in fig. 1) of the second signal-side transformer 22, and then is connected to the receiving module (PD module in fig. 1) through the second common-mode inductance module 21.

Specifically, fig. 1 is a block diagram of power transmission of a two-wire network of 10BASE-T1, divided into two machines, a power supply end on the left, a power receiving end on the right, and customized network transformers T1 and T2;

power supply path: the PSE power supply module is loaded onto a first signal end transformer 12 through a power supply end first common mode inductance (CMC) module 11 and is loaded onto a two-wire line through two primary sides of the transformer; the power receiving end is connected to the PD power receiving module through a second common mode inductance (CMC) module 21 via two primary sides of a second signal end transformer 22 on two lines.

In some embodiments, further comprising: a first PHY chip and a second PHY chip, wherein,

the first PHY chip is connected to the second terminal (terminals 6 and 8 in T1 in fig. 1) of the first signal-side transformer 12;

the second PHY chip is connected to a second terminal (terminals 6 and 8 in T2 of fig. 1) of the second signal terminal transformer 22.

In some embodiments, a first impedance matching module 13 and a second impedance matching module 23 are also included, wherein,

the first impedance matching module 13 is connected to the primary side of the first end (terminals 10 and 11 in T1 in fig. 1) of the first signal-side transformer 12;

the second impedance matching module 23 is connected to the primary side of the first terminal (terminals 10 and 11 in T2 of fig. 1) of the second signal terminal transformer 22.

Specifically, referring to fig. 1, two groups of line impedance matching networks are formed by C1, C4, and R1 at the power receiving end, and C2, C5, and R2 at the power supplying end.

In some embodiments, a first protective capacitance and a second protective capacitance are also included, wherein,

the first protection capacitor is connected to the first signal-side transformer 12 (in fig. 1, the first protection capacitor C3 is connected to the first signal-side transformer through a terminal No. 7 in T1);

the second protection capacitor is connected to the second signal-side transformer 22 (in fig. 1, the second protection capacitor C6 is connected to the second signal-side transformer through a terminal No. 7 in T2);

c3 and C6 in fig. 1 are protection capacitances of the respective devices.

In some embodiments, the signal path: signals of the power supply end and the power receiving end belong to mirror image connection, and signals on the two-wire line pass through (0.5CT+0.5CT): 1CT, and performing signal isolation transmission of 1:1.

The embodiment of the utility model also provides a power supply transmission device, which comprises the power supply transmission circuit.

Note that all features disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic set of equivalent or similar features. Where used, further, preferably, still further and preferably, the brief description of the other embodiment is provided on the basis of the foregoing embodiment, and further, preferably, further or more preferably, the combination of the contents of the rear band with the foregoing embodiment is provided as a complete construct of the other embodiment. A further embodiment is composed of several further, preferably, still further or preferably arrangements of the strips after the same embodiment, which may be combined arbitrarily.

While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

Claims

1. A power transmission circuit, comprising: the first common-mode inductance module, the second common-mode inductance module, the first signal terminal transformer and the second signal terminal transformer, wherein,

2. The power transmission circuit of claim 1, further comprising a first PHY chip and a second PHY chip, wherein,

3. The power transmission circuit of claim 1, further comprising a first impedance matching module and a second impedance matching module, wherein,

4. The power transmission circuit of claim 1, further comprising a first protective capacitor and a second protective capacitor, wherein,

5. The power transmission circuit of claim 1, wherein the power transmission circuit comprises a plurality of power converters,

signals of the power supply end and the power receiving end belong to mirror image connection, and signals on the two-wire line pass through (0.5CT+0.5CT): 1CT, and performing signal isolation transmission of 1:1.

6. A power transmission device, characterized in that it comprises a power transmission circuit according to any one of claims 1 to 5.