CN210839610U

CN210839610U - Series Ethernet power supply system

Info

Publication number: CN210839610U
Application number: CN202020182429.8U
Authority: CN
Inventors: 郭远林; 江少达; 甘广彬
Original assignee: Guangzhou DSPPA Audio Co Ltd
Current assignee: Guangzhou DSPPA Audio Co Ltd
Priority date: 2020-02-18
Filing date: 2020-02-18
Publication date: 2020-06-23
Anticipated expiration: 2030-02-18

Abstract

The utility model provides a series Ethernet power supply system, which comprises a host and N terminals, wherein the N terminals are connected to the host in series; the host comprises a control module, a power module, a communication module and at least one host Ethernet interface, wherein the power module, the communication module and the at least one host Ethernet interface are respectively connected with the control module; each terminal comprises a power supply control module, a load and two terminal Ethernet interfaces, wherein one terminal Ethernet interface of the terminal is connected with a host Ethernet interface of a host computer/one terminal Ethernet interface of a superior terminal, and the other terminal Ethernet interface of the terminal is connected with a terminal Ethernet interface of a inferior terminal; the power supply control module comprises a rectifying unit, a DC conversion unit and an Ethernet power supply control unit, wherein the Ethernet power supply control unit is connected with a load through the DC conversion unit, and the Ethernet power supply control unit is connected with two terminal Ethernet interfaces of the terminal through the rectifying unit. The embodiment of the utility model provides an advantage that has that expanded ability is strong, the engineering wiring is simple and easy, communication distance increases.

Description

Series Ethernet power supply system

Technical Field

The utility model belongs to the technical field of the network technique and specifically relates to a tandem type ethernet power supply system is related to.

Background

At present, POE (poweron ethernet, power over ethernet) of switch is a mature technique, and its theory of operation is when the terminal connects the switch net gape, and the net gape of POE switch sends a detection signal, if detect a characteristic impedance of 25K ohm, regards as detecting the powered terminal promptly, and after detecting the terminal, the switch provides direct voltage for the terminal through 1, 2, 3, 6 feet on the net twine. The inventor of the utility model discovers after studying in prior art scheme, if connect a plurality of power receiving terminal, then need be connected to the port of switch with every terminal through the net twine, be for the star type connected mode as shown in fig. 1, this mode needs every terminal all to be connected to the switch, needs a large amount of net twines, and when the quantity at terminal is more moreover, the distance is more between terminal and the switch, then needs more net twines more, requires more to lay wire height.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tandem type ethernet power supply system, the port that can solve current switch need match with equipment quantity and have the technical problem that the wiring required to have the advantage that the expanded ability is strong, the engineering wiring is simple and easy, communication distance increases.

In order to solve the above technical problem, an embodiment of the present invention provides a series ethernet power supply system, including a host and N terminals, where the N terminals are connected to the host in series; wherein N is an integer greater than or equal to 1;

the host comprises a control module, a power module, a communication module and at least one host Ethernet interface, wherein the power module, the communication module and the at least one host Ethernet interface are respectively connected with the control module;

each terminal comprises a power supply control module, a load and two terminal Ethernet interfaces, one terminal Ethernet interface of the terminal is connected with a host Ethernet interface of the host/one terminal Ethernet interface of a previous-level terminal, and the other terminal Ethernet interface of the terminal is connected with a terminal Ethernet interface of a next-level terminal;

the power supply control module comprises a rectifying unit, a DC conversion unit and an Ethernet power supply control unit, wherein the Ethernet power supply control unit is connected with the load through the DC conversion unit, and the Ethernet power supply control unit is connected with two terminal Ethernet interfaces of the terminal through the rectifying unit.

Preferably, the power over ethernet control unit is an AS1138 chip.

Preferably, the control module is an RTL8309N switch chip.

Preferably, the communication module is a W5500 chip.

As a preferred scheme, the host is a POE powered switch.

Preferably, the rectifying unit includes a first rectifying bridge and a second rectifying bridge respectively connected to the ethernet power supply control unit, the first rectifying bridge is connected to

pins

1 and 2 and

pins

3 and 6 of the terminal ethernet interface, and the second rectifying bridge is connected to

pins

4 and 5 and

pins

7 and 8 of the terminal ethernet interface.

Preferably, the power supply control module further comprises a relay for controlling on and off of the

pins

1 and 2 and the

pins

4 and 5/the

pins

3 and 6 and the

pins

7 and 8, and a control end of the relay is connected with the ethernet power supply control unit.

Preferably, the relay is a normally closed relay.

Compared with the prior art, the beneficial effects of the utility model reside in that, connect the terminal in the host computer through adopting the series connection mode, simplify the system wiring mode, need not a large amount of redundant wiring, and system transmission distance is farther, than single switch transmission distance effective extension, the host computer of also being convenient for is unified and direct current direct power supply management.

Drawings

FIG. 1 is a prior art switch star link schematic;

fig. 2 is a schematic link diagram of the power over ethernet system provided by the present invention;

fig. 3 is a schematic diagram of a system internal network link of the tandem power over ethernet system provided by the present invention;

fig. 4 is a schematic diagram of power supply inside the system of the tandem power over ethernet system provided by the present invention;

fig. 5 is a system power conversion diagram of the tandem ethernet power supply system provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 2, a preferred embodiment of the present invention provides a serial ethernet power supply system, which includes a host and N terminals, where the N terminals are connected to the host in series; wherein N is an integer greater than or equal to 1;

each terminal comprises a power supply control module, a load and two terminal Ethernet interfaces, wherein one terminal Ethernet interface of the terminal is connected with a host Ethernet interface of a host computer/one terminal Ethernet interface of a superior terminal, and the other terminal Ethernet interface of the terminal is connected with a terminal Ethernet interface of a inferior terminal;

the power supply control module comprises a rectifying unit, a DC conversion unit and an Ethernet power supply control unit, wherein the Ethernet power supply control unit is connected with a load through the DC conversion unit, and the Ethernet power supply control unit is connected with two terminal Ethernet interfaces of the terminal through the rectifying unit.

In the embodiment, the terminal is connected to the host in a series connection mode, so that the system wiring mode is simplified, a large amount of redundant wiring is not needed, the transmission distance of the system is longer, the transmission distance is effectively prolonged compared with that of a single switch, and the host is convenient to unify and direct power supply management is also convenient.

In one possible design, the power over ethernet control unit is an AS1138 chip, the control module is an RTL8309N switch chip, and the communication module is a W5500 chip.

Wherein, the host computer is for taking POE power supply switch or taking DC power supply design host computer.

Preferably, the rectifying unit includes a first rectifying bridge and a second rectifying bridge respectively connected to the power over ethernet control unit, the first rectifying bridge is connected to

pins

1 and 2 and

pins

4 and 5 and

pins

7 and 8 of the terminal ethernet interface.

The power supply control module also comprises relays for controlling the on-off of the

pins

1 and 2 and the

pins

4 and 5/3 and the pins 6 and the

pins

7 and 8, and the control end of each relay is connected with the Ethernet power supply control unit. Preferably, the relay is a normally closed relay.

The specific implementation is as follows based on the scheme:

referring to fig. 2, the connection relationship of the tandem power over ethernet system is: the host is connected to the terminal 1, the terminal 1 is connected to the terminal 2, and the terminal 2 is connected to the terminal 3, and thus, the host is connected to the terminal 1 in series.

Referring to fig. 3, the host may be a design host with dc power or a power switch with POE. Two network port signals outside the system are connected with a port 1 and a port 2 of a system switch chip RTL8309N after passing through a network transformer through

network port pins

1, 2, 3 and 6, and an internal network W5500 is connected with a port 3 of an RTL 8309N.

Referring to fig. 4, the power supply pin is a network transformer common pin 1-2 which is positive, a pin 3-6 which is negative, and the

network port pins

4 and 5 are positive, and

pins

7 and 8 which are negative, two groups of power supplies are simultaneously connected to the AS1138 chip through two rectifier bridges, and the AS1138 chip is converted into the voltage VDD required by the device, such AS 12V/5V, and the like.

Referring to fig. 5, when the AS1138 detects that the system is connected to the switch and is stable, a control signal VCOM is sent out to control the relay to pull in, the dc power rectified from the rectifier bridge is provided to the next terminal device through

pins

4, 5, 7, and 8 of another network port, when the AS1138 detects that the higher-level device is a non-switch device, no signal is sent out, the relay maintains a normally closed state, and the dc power is directly connected to the next terminal through

pins

4, 5, 7, and 8 of another network port.

The data exchange of the upper stage, the lower stage and the local machine is realized by a local exchange chip RTL8309N, and the RTL8309N is a single-chip 8-port hundred million exchange chip. Through the system, the host or the switch can be connected with a plurality of terminal devices in series only by one network port, and power supply and communication of each terminal device are realized.

Therefore, the system can greatly save wiring space, simplify the wiring mode of the system, does not need a large amount of redundant wiring, has longer transmission distance of the system, effectively prolongs the transmission distance compared with a single switch, and is convenient for host unification and direct-current power supply management.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. A tandem power over ethernet system comprising a host and N terminals, the N terminals being connected in series to the host; wherein N is an integer greater than or equal to 1;

2. The power-over-ethernet system of claim 1, wherein said power-over-ethernet control unit is an AS1138 chip.

3. The tandem power over ethernet system of claim 1, wherein said control module is an RTL8309N switch chip.

4. The tandem-type power over ethernet system of claim 1, wherein said communication module is a W5500 chip.

5. The power-over-serial ethernet system of claim 1, wherein said host is a power-over-POE switch.

6. The tandem power over ethernet system of claim 1, wherein said rectifying unit comprises a first rectifying bridge and a second rectifying bridge connected to said power over ethernet control unit, respectively, said first rectifying bridge being connected to pins 1, 2 and 3, 6 of said terminal ethernet interface, said second rectifying bridge being connected to pins 4, 5 and 7, 8 of said terminal ethernet interface.

7. The power over serial ethernet system according to claim 6, wherein said power control module further comprises a relay for controlling on/off of said pins 1, 2 and said pins 4, 5/said pins 3, 6 and said pins 7, 8, a control terminal of said relay being connected to said power over ethernet control unit.

8. The power over serial ethernet system of claim 7, wherein said relay is a normally closed relay.