An Ethernet Power Supply Architecture

Abstract

The present application discloses an Ethernet power supply architecture, including a PSE module and one or more PD modules, wherein: The PSE module includes: a power input port; a first MCU connected to the power input port; one or more PSE units; each PSE unit includes a PSE power supply chip, a switching chip, and multiple first network ports; Each PD module connection includes: a second network port matching the first network port; a PD power supply chip with an input port connected to the power supply port of the second network port; a second MCU with a power supply port connected to the output port of the PD power supply chip and a communication port connected to the communication port of the second network port; multiple power-consuming device interfaces. The Ethernet power supply architecture in the present application has high scalability and versatility, uses the first MCU and the second MCU for flexible and accurate power supply control, realizes reliable power supply to any power-consuming device interface, and can be applied to various types of power-receiving devices with different types and different power requirements.

Description

Technical Field

[0001] The present invention relates to the field of Power over Ethernet, and particularly to a Power over Ethernet architecture. Background Art

[0002] Power over Ethernet (PoE) is a power supply method that can simultaneously achieve data communication and power transmission. However, the current Power over Ethernet network usually has a fixed and closed network structure, the power distribution principle of the power supply network is not flexible enough, the power supply power of each power supply port is limited, and therefore the types of power receiving devices that can operate normally in the power supply network are few.

[0003] Therefore, how to provide a solution to the above technical problems is an issue that those skilled in the art need to solve currently. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a Power over Ethernet architecture with flexible control. The specific solution is as follows:

[0005] A Power over Ethernet architecture includes a PSE module and one or more PD modules, wherein:

[0006] The PSE module includes:

[0007] A power input port;

[0008] A first MCU connected to the power input port;

[0009] One or more PSE units; each PSE unit includes a PSE power supply chip, a switching chip, and multiple first network interfaces; the power supply input port of the PSE power supply chip is connected to the power input port, the communication port is connected to the first MCU, and the power supply output port is connected to all the first network interfaces; the first communication port of the switching chip is connected to the first MCU, and the second communication port is connected to all the first network interfaces;

[0010] Each PD module is connected to the PSE module through the corresponding first network interface;

[0011] Each PD module includes:

[0012] A second network interface matching the first network interface;

[0013] A PD power supply chip with an input port connected to the power supply port of the second network interface;

[0014] A second MCU with a power supply port connected to the output port of the PD power supply chip and a communication port connected to the communication port of the second network interface;

[0015] Multiple electrical device interfaces; the communication ports of each of the electrical device interfaces are connected to the second MCU, and the power supply ports are all connected to the output ports of the PD power supply chip.

[0016] Preferably, the PSE module further includes a first DC-DC unit, and / or each of the PD modules further includes an Ethernet transformer and / or a second DC-DC unit;

[0017] The power input port and the first MCU are connected through the first DC-DC unit;

[0018] Both the PD power supply chip and the second MCU are connected to the second Ethernet port through the Ethernet transformer;

[0019] The second MCU and the PD power supply chip are connected through the second DC-DC unit;

[0020] The power supply port of the electrical device interface is directly connected to the output port of the PD power supply chip or indirectly connected through the second DC-DC unit.

[0021] Preferably, the electrical device interface includes an LED interface and a protocol expansion interface. The power supply port of the LED interface is connected to the output port of the PD power supply chip, and the power supply port of the protocol expansion interface is connected to the output port of the second DC-DC unit.

[0022] Preferably, the Ethernet power supply architecture further includes:

[0023] An LED driving circuit connected to the LED interface and supplying power to the LED lamp.

[0024] Preferably, the LED driving circuit is an LED driving circuit that can sense the power supply state of the connected LED lamp and send the power supply state to the second MCU.

[0025] Preferably, the Ethernet power supply architecture further includes:

[0026] An expansion adaptation circuit connected to the protocol expansion interface and adapted to the electrical device.

[0027] Preferably, the electrical device includes a sensor, and / or a controller, and / or a signal repeater.

[0028] Preferably, the Ethernet power supply architecture further includes:

[0029] A switch connected to the first Ethernet port.

[0030] Preferably, the first MCU communicates with the corresponding first Ethernet port according to the Ethernet port address;

[0031] The second MCU communicates with the corresponding power-consuming device interface according to the interface address.

[0032] Preferably, communication is performed between the first MCU and all the first network ports, and between the second MCU and all the power-consuming device interfaces in a preset data structure, which includes a module type, a port address, and data content. The module type is specifically the PSE module or the PD module, and the port address is specifically the network port address of the first network port or the interface address of the power-consuming device interface.

[0033] The present application discloses an Ethernet power supply architecture, including a PSE module, one or more PD modules, wherein: the PSE module includes: a power input port; a first MCU connected to the power input port; one or more PSE units; each PSE unit includes a PSE power supply chip, a switching chip, and multiple first network ports; each PD module is connected to the PSE module through a corresponding first network port; each PD module includes: a second network port matching the first network port; a PD power supply chip with an input port connected to the power supply port of the second network port; a second MCU with a power supply port connected to the output port of the PD power supply chip and a communication port connected to the communication port of the second network port; and multiple power-consuming device interfaces. The Ethernet power supply architecture in the present application has high scalability and versatility. The Ethernet power supply architecture uses the first MCU and the second MCU for flexible and accurate power supply control, realizes reliable power supply to any power-consuming device interface, and can be applied to various types of power-receiving devices with different types and different power requirements. Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0035] Figure 1 It is a structural distribution diagram of an Ethernet power supply architecture in an embodiment of the present invention;

[0036] Figure 2 It is a structural distribution diagram of a specific Ethernet power supply architecture in an embodiment of the present invention;

[0037] Figure 3 It is a structural distribution diagram of an interface module in an embodiment of the present invention;

[0038] Figure 4aSchematic diagram of the circuit connection of a PSE power supply chip in an embodiment of the present invention;

[0039] Figure 4b Schematic diagram of the circuit connection of another PSE power supply chip in an embodiment of the present invention;

[0040] Figure 4c Schematic diagram of the circuit connection of the third PSE power supply chip in an embodiment of the present invention. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] The current Ethernet power supply network usually has a fixed and closed network structure. The power distribution principle of the power supply network is not flexible enough, and the power supply power of each power supply port is limited. Therefore, the types of powered devices that can operate normally in the power supply network are few.

[0043] The Ethernet power supply architecture in this application has high scalability and versatility. The Ethernet power supply architecture uses the first MCU and the second MCU for flexible and accurate power supply control to achieve reliable power supply to any power-consuming device interface, and can be applied to various types of powered devices with different types and different power requirements.

[0044] An embodiment of the present invention discloses an Ethernet power supply architecture. Refer to Figure 1 As shown, it includes a PSE (Power Source Equipment, power supply device) module 1 and one or more PD (Power Device, powered device) modules 2, where:

[0045] The PSE module 1 includes:

[0046] A power input port 10;

[0047] A first MCU (Micro Control Unit, micro control unit) 11 connected to the power input port 10;

[0048] One or more PSE units 12; each PSE unit 12 includes a PSE power supply chip 121, a switching chip 122, and a plurality of first network interfaces 123; the power supply input port of the PSE power supply chip 121 is connected to the power input port 10, the communication port is connected to the first MCU 11, and the power supply output port is connected to all the first network interfaces 123; the first communication port of the switching chip 122 is connected to the first MCU 11, and the second communication port is connected to all the first network interfaces 123;

[0049] Each PD module 2 is connected to the PSE module 1 through a corresponding first network interface 123;

[0050] Each PD module 2 includes:

[0051] A second network interface 20 that matches the first network interface 123;

[0052] A PD power supply chip 21 whose input port is connected to the power supply port of the second network interface 20;

[0053] A second MCU 22 whose power supply port is connected to the output port of the PD power supply chip 21 and whose communication port is connected to the communication port of the second network interface 20;

[0054] A plurality of electrical device interfaces 23; the communication port of each electrical device interface 23 is connected to the second MCU 22, and the power supply port is connected to the output port of the PD power supply chip 21.

[0055] It can be understood that Figure 1 Taking one PSE unit 12 as an example, the Ethernet power supply architecture in this embodiment includes two layers of networks. One is the power supply network, represented by solid lines, including the power input interface 10, the PSE power supply chip 121, the first network interface 123, the second network interface 20, the PD power supply chip 21, and the electrical device interface 23, to realize the power supply to the electrical devices connected to the electrical device interface 23. The other is the communication network, represented by dotted lines, including the first MCU 11, the PSE power supply chip 121, the switching chip 122, the first network interface 123, the second network interface 20, the second MCU 22, and the electrical device interface 23. Among them, the electrical device interface 23, the first network interface 123, and the second network interface 20 transfer information. The second MCU 22 receives the information and uploads it. The switching chip 122 performs protocol conversion on the information. The first MCU 11 receives all the information and makes judgment and processing, and then issues corresponding control instructions. The PSE power supply chip 121 receives the control instructions of the first MCU 11 and executes them. Therefore, the Ethernet power supply architecture in this embodiment can be regarded as an Internet of Things system that supports power supply. This system has good scalability, supports the access of various protocols and various electrical devices, and can perform flexible and stable power supply control on electrical devices.

[0056] Among them, the PSE power supply chip 121, which is also the PSE protocol circuit chip, can adopt a pluggable structure separated from the motherboard of the PSE unit 12 and is used to supply power to the first network interface 123. Its internal power supply protocol may vary due to different manufacturers. Common power supply protocols include PoE power supply protocols such as 802.3af and 802.3at. The first network interface 123 is usually an RJ45 network interface. Further, the internal power supply protocols of the PD power supply chip 21 and the PSE power supply chip 121 are paired with each other for AC communication.

[0057] This application discloses an Ethernet power supply architecture, including a PSE module and one or more PD modules, where: the PSE module includes: a power input port; a first MCU connected to the power input port; one or more PSE units; each of the PSE units includes a PSE power supply chip, a switching chip, and multiple first network interfaces; each of the PD modules is connected to the PSE module through the corresponding first network interface; each of the PD modules includes: a second network interface matching the first network interface; a PD power supply chip with an input port connected to the power supply port of the second network interface; a second MCU with a power supply port connected to the output port of the PD power supply chip and a communication port connected to the communication port of the second network interface; multiple power-consuming device interfaces. The Ethernet power supply architecture in this application has high scalability and versatility. The Ethernet power supply architecture uses the first MCU and the second MCU for flexible and accurate power supply control, realizes reliable power supply to any power-consuming device interface, and can be applied to various types of power-receiving devices with different types and different power requirements.

[0058] An embodiment of the present invention discloses a specific Ethernet power supply architecture. Compared with the previous embodiment, this embodiment further explains and optimizes the technical solution. Specifically:

[0059] See Figure 2 As shown, the PSE module 1 further includes a first DC-DC unit 13, and / or each PD module 2 further includes a network interface transformer 24 and / or a second DC-DC unit 25;

[0060] The power input port 10 and the first MCU 11 are connected through the first DC-DC unit 13;

[0061] Both the PD power supply chip 21 and the second MCU 22 are connected to the second network interface 20 through the network interface transformer 24;

[0062] The second MCU 22 and the PD power supply chip 21 are connected through the second DC-DC unit 25;

[0063] The power supply port of the electrical device interface 23 is directly connected to the output port of the PD power supply chip 21 or indirectly connected through the second DC-DC unit 25.

[0064] It can be understood that the newly added first DC-DC unit 13, network interface transformer 24, and / or second DC-DC unit 25 all transform the voltage of the power supply network. This is because different components may require different supply voltages. To better meet the voltage requirements of various components, in this embodiment, voltage conversion components are used to establish multiple voltage levels to supply power to different components.

[0065] Furthermore, the electrical device interface 23 includes an LED (Light Emitting Diode) interface and a protocol expansion interface. The power supply port of the LED interface is connected to the output port of the PD power supply chip 21, and the power supply port of the protocol expansion interface is connected to the output port of the second DC-DC unit 25.

[0066] It can be understood that the essential differences between the LED interface and the protocol expansion interface are the different supply voltages and the differences in interface pins. Specifically, the protocol expansion interface supports other electrical devices to access through digital protocols, and the digital protocols include, but are not limited to, wired transmission protocols such as RS232, RS485, and CAN (Controller Area Network).

[0067] Furthermore, the Ethernet power supply architecture further includes:

[0068] An LED driving circuit 26 connected to the LED interface to supply power to the LED lamp.

[0069] Specifically, the LED driving circuit 26 is an LED driving circuit 26 that can sense the power supply state of the connected LED lamp and send the power supply state to the second MCU 22. Its wiring pins mainly include a power supply pin VCC, a ground pin GND, and a control signal pin S. The control signal pin mainly receives a control signal in the form of PWM (Pulse Width Modulation).

[0070] It can be understood that the type of the LED driving circuit 26 here includes constant voltage driving and constant current driving, which converts the voltage obtained from the PD module 2 into a constant current power supply or a constant voltage power supply to drive the LED lamp. At the same time, the LED driving circuit 26 can also sense whether an LED lamp is connected to the LED driving circuit 26 and the power supply state when the LED lamp is connected. The LED driving circuit 26 can send the power supply state to the second MCU 22 through the LED interface for subsequent power monitoring and control.

[0071] Furthermore, the Ethernet power supply architecture further includes:

[0072] An extended adaptation circuit 27 that is connected to the protocol extension interface and adapts to the electrical equipment.

[0073] Specifically, the extended adaptation circuit 27 converts the data between the electrical equipment and the protocol extension interface. It usually includes an MCU. The extended adaptation circuit 27 can perform operations such as digital-to-analog conversion, level reading, interacting with various devices using other communication protocols, defining the types of local electrical equipment and data types, etc., so as to access the data of the electrical equipment into the Power over Ethernet architecture. Further, the extended adaptation circuit 27 can adopt a split structure to connect to the protocol extension interface or the electrical equipment. The connection pins mainly include a power supply pin 5V, a ground pin GND, communication pins TX and RX.

[0074] Further, the electrical equipment includes sensors, and / or controllers, and / or signal repeaters.

[0075] It can be understood that the electrical equipment here refers to the electrical equipment connected to the extended adaptation circuit 27, including but not limited to sensors, controllers, and signal repeaters. The types of sensors include but are not limited to temperature sensors, humidity sensors, light sensors, pressure sensors, distance sensors, in-position sensors. The controllers include but are not limited to various motor controllers, push-button switches, rotary switches. The signal repeaters mainly include signal repeaters corresponding to various wireless transmission protocols, and the wireless transmission protocols include Bluetooth, WiFi, ZigBee, etc.

[0076] It can be understood that since the protocol extension interface can realize data transmission, the electrical equipment connected thereto can all establish a data transmission link with the second MCU 22 through the protocol extension interface to achieve data interconnection of the entire Internet of Things.

[0077] Further, the Power over Ethernet architecture can also include:

[0078] A switch 13 connected to the first network port 123.

[0079] It can be understood that in this embodiment, a local communication network for the entire power supply architecture is established with the first MCU 11 and the second MCU 22 as the primary and secondary centers. The first MCU 11 serves as a simple server for this local communication network, assigns IP addresses of the local network to the first network interface 123 and the power consumption device interface 23, and can also provide corresponding WEB management pages for system users. To further improve the management ability of the Ethernet power supply architecture, in this embodiment, a switch 13 connected through the first network interface 123 is provided. A client terminal such as a mobile phone or a computer can access the local communication network through the uplink of the switch 13, thereby realizing the monitoring of the Ethernet power supply architecture. The connection and data interaction relationships of each unit module, the real-time status of the power consumption devices, etc. can all be queried in the form of communication data.

[0080] Furthermore, the first MCU 11 communicates with the corresponding first network interface 123 according to the network interface address;

[0081] The second MCU 22 communicates with the corresponding power consumption device interface 23 according to the interface address.

[0082] It can be understood that the first MCU 11 communicates with all the first network interfaces 123, and the second MCU 22 communicates with all the power consumption device interfaces 23 in a preset data structure. The data structure includes module type, port address, and data content. The module type is specifically a PSE module or a PD module, and the port address is specifically the network interface address of the first network interface or the interface address of the power consumption device interface. The preset data structure is usually in the following form:

[0083]

[0084] Among them, board type is the module type, and port type is the port address. The data of each power consumption device and transmission channel in the above text can be communicated according to this preset data structure.

[0085] Furthermore, in the PSE module 1, the PSE power supply chip 121 is a pluggable chip, and the pluggable chip is pluggably installed on the motherboard of the PSE module 1.

[0086] Furthermore, as shown in Figure 3 On the motherboard of the PSE module 1, there is one or more socket interface modules corresponding to the pins of the pluggable chip. Each socket interface module includes an analog circuit interface unit and a digital circuit interface unit;

[0087] The analog circuit interface unit includes an analog power supply interface AVDD, an analog ground interface AGND, and multiple network interface interfaces PORT1 - PORTn,

[0088] The digital circuit interface unit includes an SCL interface, an SDA interface, a signal restart interface RESET, a signal input interface INT, a digital power interface, and a digital ground interface DGND.

[0089] Among them, the digital power interface usually selects a digital voltage of 3.3V.

[0090] It can be understood that all kinds of components of the PSE module 1 are arranged on the motherboard. Considering the different performances of different components in terms of replacement frequency and protocol compatibility, except for the PSE power supply chip 121, other components can be directly integrated and installed on the motherboard. The position of the PSE power supply chip 121 is provided with a corresponding socket interface module. According to the scalability requirements of the Ethernet power supply architecture, the motherboard is provided with a corresponding number of PSE units 12, and at the same time, a corresponding number of socket interface modules are reserved, such as Figure 3 including 2 socket interface modules, which can be used to plug in two different PSE power supply chips 121.

[0091] The socket interface module designed in this embodiment is applicable to various PSE power supply chips 121, and has extremely high compatibility in terms of interface type and interface position. See Figures 4a - 4c , which are three PSE power supply chips 121 with different specifications respectively. Among them Figure 4a is the circuit wiring method of the microchip and the socket interface module, Figure 4b is the circuit wiring method of the ADI chip and the socket interface module, Figure 4c is the circuit wiring method of the TI chip and the socket interface module.

[0092] Finally, it should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0093] The above has introduced in detail an Ethernet power supply architecture provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation on the present invention.

Claims

1. An Ethernet power supply architecture, characterized in that, Comprising a PSE module and one or more PD modules, wherein: The PSE module comprises: A power input port; A first MCU connected to the power input port; One or more PSE units; each PSE unit comprises a PSE power supply chip, a switching chip and a plurality of first network ports; the power supply input port of the PSE power supply chip is connected to the power input port, the communication port is connected to the first MCU, and the power supply output port is connected to all the first network ports; the first communication port of the switching chip is connected to the first MCU, and the second communication port is connected to all the first network ports; Each PD module is connected to the PSE module through the corresponding first network port; Each PD module comprises: A second network port matching the first network port; A PD power supply chip with the input port connected to the power supply port of the second network port; A second MCU with the power supply port connected to the output port of the PD power supply chip and the communication port connected to the communication port of the second network port; A plurality of electrical device interfaces; the communication port of each electrical device interface is connected to the second MCU, and the power supply port is connected to the output port of the PD power supply chip; It further comprises: A switch connected to the first network port; The first MCU is used to allocate IP addresses of the local area network for the first network port and the electrical device interfaces, provide a WEB management interface, communicate with the switch connected to the corresponding first network port and each PD module according to the network port address, so as to obtain and send the connection status and data interaction information between the first MCU and the PSE power supply chip, the connection status and data interaction information between the first MCU and the switching chip, the connection status and data interaction information between the switching chip and the second MCU in each corresponding PD module, the connection status and data interaction information between the second MCU and each electrical device, and the real-time power supply status of each electrical device to the client through the switch; The second MCU is used to communicate with the corresponding electrical device interface according to the interface address, so as to obtain and send the connection and data interaction relationship between the second MCU and each electrical device, and the real-time power supply status of each electrical device to the first MCU; The PSE module further comprises a first DC-DC unit, and / or each PD module further comprises a network port transformer and / or a second DC-DC unit; When the PSE module further comprises a first DC-DC unit, the power input port and the first MCU are connected through the first DC-DC unit; When the PD module further comprises a network port transformer, the PD power supply chip and the second MCU are both connected to the second network port through the network port transformer; When the PD module further includes a second DC-DC unit, the second MCU and the PD power supply chip are connected through the second DC-DC unit; the power supply port of the electrical device interface is directly connected to the output port of the PD power supply chip or indirectly connected through the second DC-DC unit.

2. The Ethernet power supply architecture according to claim 1, wherein The electrical device interface includes an LED interface and a protocol expansion interface. The power supply port of the LED interface is connected to the output port of the PD power supply chip, and the power supply port of the protocol expansion interface is connected to the output port of the second DC-DC unit.

3. The Ethernet power supply architecture according to claim 2, wherein It further includes: An LED driving circuit connected to the LED interface and supplying power to the LED lamp.

4. The Ethernet power supply architecture according to claim 3, characterized in that, The LED driving circuit is used to sense the power supply state of the connected LED lamp and send the power supply state to the second MCU.

5. The Ethernet power supply architecture according to claim 2, wherein It further includes: An extended adaptation circuit connected to the protocol expansion interface and adapting to the electrical device.

6. The Power over Ethernet architecture according to claim 5, wherein The electrical device includes a sensor, and / or a controller, and / or a signal repeater.

7. The Ethernet power supply architecture according to claim 1, wherein Communication is carried out between the first MCU and all the first network ports, and between the second MCU and all the electrical device interfaces in a preset data structure. The data structure includes a module type, a port address, and data content. The module type is specifically the PSE module, the port address is specifically the network port address of the first network port, or the module type is specifically the PD module, and the port address is specifically the interface address of the electrical device interface.

Images