CN212163356U - Bidirectional power supply cascade equipment - Google Patents
Bidirectional power supply cascade equipment Download PDFInfo
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- CN212163356U CN212163356U CN202020367768.3U CN202020367768U CN212163356U CN 212163356 U CN212163356 U CN 212163356U CN 202020367768 U CN202020367768 U CN 202020367768U CN 212163356 U CN212163356 U CN 212163356U
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Abstract
The utility model relates to a power supply module, a power receiving module, a port scanning module and a mode switching module; the power supply module is used for enabling the network port to be in a power supply mode and supplying power to external equipment; the power receiving module is used for enabling the network port to be in a power receiving mode and can receive power supplied by external equipment; the port scanning module is connected with the mode switching module and used for scanning power supply state information of a plurality of network ports and sending the power supply state information to the mode switching module, wherein the power supply state information is in an independent power supply state or a non-independent power supply state; and the mode switching module is used for receiving the power supply state information sent by the port scanning module and connecting the network port with the power supply module or the power receiving module according to the power supply state information. According to the bidirectional power supply cascade equipment, the port scanning module scans the power supply state information of the plurality of network ports, and the mode switching module switches the connection relation between the network ports and the power supply module and the power receiving module according to the power supply state information, so that the network ports have a bidirectional power supply function.
Description
Technical Field
The utility model relates to a system hardware circuit design technical field especially relates to two-way power supply cascades equipment.
Background
The Power Over Ethernet (POE) technology is a technology for transmitting a data signal to an Ethernet client and providing dc Power to the Ethernet client at the same time under the existing Ethernet cat.5 wiring infrastructure, and the Ethernet client may be an Internet Protocol (IP) phone, a Wireless Local Area Network (WLAN) Access Point (Access Point, AP), a webcam, and the like.
In a POE system, a Power Sourcing Equipment (PSE) and a Powered Device (PD) are mainly included. For example, the power supply device is a POE switch, and the powered device is a POE cascade device, and according to the conventional POE cascade device technology, only fixed network port power receiving and fixed network port power supplying can be realized.
In the conventional POE cascade device technology, the network port 1 is usually used as a power receiving network port, and the network ports 2 and 3 are used as power supply network ports. As shown in fig. 1, the network port 1 can only be used for connecting a POE switch; the network port 2 and the network port 3 can only be used for connecting a powered device, and the received electric energy can only be less than half of the electric energy received by the network port 1. The PSE represents a power supply device, the PD represents a powered device, and the system power supply means that power received by the network interface 1 is distributed to other parts of the device for application.
When using POE cascade device in practice, have a restriction, to confirm PSE net gape and PD net gape promptly, PSE equipment can only dock the normal power supply of PD net gape, and PD equipment can only dock the normal power supply that can be supplied power of PSE net gape. The existing POE cascade equipment distinguishes a PSE network port and a PD network port and cannot be used bidirectionally.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide a bidirectional power supply cascade device for the problem that the PSE port and the PD port cannot be used in both directions.
A bi-directional power supply cascade device having a plurality of network ports, said bi-directional power supply cascade device comprising: the system comprises a power supply module, a power receiving module, a port scanning module and a mode switching module;
the power supply module is used for enabling the network port to be in a power supply mode and supplying power to external equipment;
the power receiving module is used for enabling the network port to be in a power receiving mode and can receive power supply of external equipment;
the port scanning module is connected with the mode switching module and is used for scanning power supply state information of a plurality of network ports and sending the power supply state information to the mode switching module, wherein the power supply state information is in an independent power supply state or a non-independent power supply state;
and the mode switching module is used for receiving power supply state information sent by the port scanning module and connecting the network port with the power supply module or the power receiving module according to the power supply state information.
In one of the embodiments, the first and second electrodes are,
the port scanning module is connected with the mode switching module and used for scanning power supply state information of a plurality of network ports and sending the power supply state information to the mode switching module; the power supply state information is an independent power supply state or a non-independent power supply state;
and the mode switching module is used for receiving the power supply state information sent by the port scanning module and connecting the network port with the power supply module or the power receiving module according to the power supply state information.
In one embodiment, the bidirectional power supply cascade device further comprises a forcing module;
the forcing module is connected with the network port and used for keeping the network port forcibly connected with the power supply module.
In one embodiment, the port scanning module comprises a scanning unit and a stability detection unit;
the scanning unit is connected with the stability detection unit and used for detecting power supply information of the network port and sending the power supply information to the stability detection unit;
the stability detection unit is connected with the mode switching module and used for receiving the power supply information and detecting the state information of the network port; the stability detection unit can generate the power supply state information according to the power supply information and the state information and send the power supply state information to the mode switching module.
In one embodiment, the port scanning module further comprises a power supply detection unit;
the power supply detection unit is connected with the mode switching module and used for detecting whether a power supply supplies power or not, generating detection information and sending the detection information to the mode switching module;
the mode switching module is used for receiving the detection information and connecting the internet access with the power supply module or the power receiving module according to the detection information.
In one embodiment, the mode switching module is configured to receive the detection information, and connect all the network ports to the power supply module if the detection information indicates that an external power supply supplies power.
In one embodiment, the port scanning module generates the detection information with a higher priority than the power state information.
In one embodiment, the mode switching module is configured to receive power supply state information sent by the port scanning module, and connect the network port with the power supply module if the power supply state information is an independent power supply state; and if the power supply state information is in a non-independent power supply state, connecting the network port with the power receiving module.
In one embodiment, a plurality of the network ports are sorted in a priority order;
and the port scanning module is used for scanning the network ports according to the priority order.
In one embodiment, the number of the power supply modules is multiple, and the number of the power receiving modules is one;
the power receiving module is connected with all the network ports;
and the power supply modules are respectively connected with the corresponding network ports.
In one embodiment, the port scanning module is configured to scan power supply status information of a plurality of network ports according to a priority order, and send the power supply status information to the mode switching module;
the mode switching module is configured to receive power supply state information sent by the port scanning module, and if the power supply state information of a plurality of network ports is an independent power supply state, connect the network port with the highest priority to the power receiving module according to a priority order, and connect the remaining network ports to the power supply module.
According to the bidirectional power supply cascade equipment, the port scanning module scans the power supply state information of the plurality of network ports, the mode switching module switches the connection relation between the network ports and the power supply module and the power receiving module according to the power supply state information, so that the network ports have a bidirectional power supply function, and the network ports can be connected with PSE equipment and PD equipment.
Drawings
Fig. 1 is a schematic block diagram of a conventional POE cascade device;
fig. 2 is a schematic block diagram of a bidirectional power supply cascade device according to an embodiment of the present invention;
FIG. 3 is a block diagram of the port scan model of FIG. 2;
fig. 4 is a star topology structure diagram of the bidirectional power supply cascade device in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an embodiment of the present invention in an external power supply state of the bidirectional power supply cascade device.
10. A port scanning module; 20. a mode switching module; 30. a network port; 40. a power supply module; 50. a power receiving module; 60. an external power supply; 70. a forcing module; 110. a scanning unit; 120. a stability detection unit.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
As shown in fig. 2 to 5, the bidirectional power supply cascade device has a plurality of network ports 30, and the bidirectional power supply cascade device includes: a power supply module 40, a power receiving module 50, a port scanning module 10 and a mode switching module 20. Specifically, the power supply module 40 is configured to enable the network interface 30 to be in a power supply mode, so as to supply power to an external device. The power receiving module 50 is configured to enable the internet access 30 to be in a power receiving mode, and can receive power supplied by an external device. The port scanning module 10 is connected to the mode switching module 20, and configured to scan power supply state information of multiple network ports 30 and send the power supply state information to the mode switching module 20, where the power supply state information is an independent power supply state or a non-independent power supply state. The mode switching module 20 is configured to receive power supply status information sent by the port scanning module 10, and connect the internet access 30 with the power supply module 40 or the power receiving module 50 according to the power supply status information. In this embodiment, the mode switching module 20 is configured to receive power supply status information sent by the port scanning module 10, and if the power supply status information is an independent power supply status, connect the network port 30 with the power supply module 40; if the power supply state information is a dependent power supply state, the network port 30 is connected to the power receiving module 50. In this embodiment, the mode switching module 20 may be a switch circuit composed of multiple integrated programmable logic controllers or relays. The programmable logic controller is a digital operation electronic system specially designed for application in industrial environment, and stores instructions for executing operations such as logic operation, sequence control, timing, counting and arithmetic operation in the programmable logic controller, and controls various types of mechanical equipment or production processes through digital or analog input and output.
Optionally, the bidirectional power supply cascade device further includes a forcing module 70, where the forcing module 70 is connected to the network port 30, and is configured to force the network port 30 to remain connected to the power supply module 40. Specifically, when the mode switching module 20 connects the network port 30 to the power supply module 40 according to the power supply state information, the forcing module 70 forces the corresponding network port 30 to be connected to the power supply module 40, so as to prevent the connection between the power supply module 40 and the network port 30 from being interrupted.
Optionally, the port scanning module 10 includes a scanning unit 110 and a stability detection unit 120. Specifically, the scanning unit 110 is connected to the stability detection unit 120, and is configured to detect power supply information of the internet access 30 and send the power supply information to the stability detection unit 120. The stability detection unit 120 is connected to the mode switching module 20, and configured to receive the power supply information and detect the status information of the internet access 30. The stability detection unit 120 generates the power supply status information according to the power supply information and the status information, and sends the power supply status information to the mode switching module 20. The power supply status information includes power supply information and status information, where the power supply information is information about whether the external power supply 60 receives power from the network port 30, and the status information is information about whether the external power supply 60 supplied with power from the network port 30 is stable. The mode switching module 20 determines that the power supply state information is an independent power supply state and a non-independent power supply state according to the power supply information and the state information. The independent power supply state is that the network port has the external power supply 60 which supplies power stably to access, and the non-independent power supply state is that the external power supply 60 which accesses the network port cannot supply power stably and does not have the external power supply 60 to access. In this embodiment, if the scanning unit 110 detects that the power supply information of the internet access 30 is power supplied by the external power source 60, the power supply information is sent to the stability detection unit 120. The stability detection unit 120 detects whether external power supply to the network port 30 is stable according to the power supply information, and generates status information. If the scanning unit 110 detects that the power supply information of the internet access 30 does not have external power supply, the stability detecting unit 120 does not detect the internet access 30. The stability standard of the state information is whether the power supply of the external power supply 60 on the internet access 30 is stable at 48V, and if the power supply of the external power supply is stable at 48V, the state information is that the power supply state is stable; if the power supply of the external power source 60 is not stabilized at 48V, the state information is that the power supply state is unstable.
Optionally, the port scanning module 10 is further configured to detect whether an external power source 60 supplies power, generate detection information, and send the detection information to the mode switching module 20. The mode switching module 20 is configured to receive the detection information, and connect the internet access 30 with the power supply module 40 or the power receiving module 50 according to the detection information. The detection information is information for detecting whether a power supply is available at the power supply interface for power supply generation. Specifically, if the port scanning module 10 detects that an external power supply 60 supplies power and generates detection information, the detection information is sent to the mode switching module 20, and the mode switching module 20 is configured to receive the detection information, and then connect all the network ports 30 with the power supply module 40; if the port scanning module 10 detects that no external power source 60 supplies power and generates detection information, the detection information is sent to the mode switching module 20, and the mode switching module 20 is configured to receive the detection information, and then connect all the network ports 30 with the power receiving module 50. The port scanning module 10 then scans the power supply status information of the plurality of network ports 30 and sends the power supply status information to the mode switching module 20. In this embodiment, the priority of the port scanning module 10 for generating the detection information is higher than the priority of the port scanning module 10 for generating the power supply state information, that is, the port scanning module 10 detects that the external power supply 60 supplies power to the power interface and the power supply is stable, the mode switching module 20 connects all the ports 30 with the power supply module 40, all the ports 30 can supply power to the external device, and even if the power supply state information of the ports 30 belongs to the independent power supply state, the ports 30 are not connected with the power receiving module 50. If the port scanning module 10 scans the detection information of the power interface, that is, no external power supply 60 supplies power, the port scanning module 10 continues to scan the power supply state information of the network port, and the mode switching module 20 connects the network port 30 with the corresponding power receiving module 50 or power supply module 40 according to the power supply state information.
Optionally, a plurality of said ports 30 are ordered in a priority order. The port scanning module 10 is configured to scan the network ports 30 according to a priority order. Specifically, the port scanning module 10 cyclically scans the network ports 30 according to the priority order, generates power supply status information, and sends the power supply status information to the mode switching module 20.
In this embodiment, the number of the power supply modules 40 is plural, and the number of the power receiving modules 50 is one; the power receiving module 50 is connected to all the network ports 30; the plurality of power supply modules 40 are connected to the corresponding network ports 30. The port scanning module 10 is configured to scan power supply status information of a plurality of network ports 30 according to a priority order, and send the power supply status information to the mode switching module 20; the mode switching module 20 is configured to receive power supply state information sent by the port scanning module 10, if the power supply state information of a plurality of network ports 30 is an independent power supply state, connect the network port 30 with the highest priority to the power receiving module 50 according to a priority order, connect the remaining network ports 30 to the power supply module 40, and when it is detected that the power supply state information of a network port 30 is the independent power supply state, the mode switching module 20 keeps the connection between the network port 30 and the power receiving module 50, and forcibly connect the remaining network ports 30 to the power supply module 40 through the forcing module 70, so as to form a standard PSE detection network port capable of supplying power to the outside. It is understood that the number of the power receiving modules 50 may also be 2 or more than 2, so as to receive the power supplied by the corresponding number of external power sources 60, and the mode switching module 20 connects the power receiving modules 50 with the corresponding network ports 30 in order of priority according to the power supply status information.
The utility model provides a two-way power supply cascades equipment based on POE power supply technology, net gape 30 on the two-way power supply cascades equipment can use the net twine to cascade wantonly, also can accept the PSE equipment power supply by oneself to support simultaneously external PSE equipment power supply to realize network data interconnection, automatic powered and external power supply star type topology power supply interconnection. A certain level of the network port 30 of the bidirectional power supply cascade device can be used as a central point of the star topology, and can also supply power to other cascade devices through POE. The bidirectional power supply cascade equipment realizes the sharing mode of the power receiving module 50 and the distribution mode of the power receiving module 50 or the power supply module 40 at each network distributing port 30 through the control of the mode switching module 20, thereby saving the space, development and material cost of the device; the network port 30 of one or more bidirectional power supply cascade devices can be independently supplied with power to realize star-type power supply cascade connection, and cascade connection of cascade devices with unlimited stages is realized. The existing POE cascading equipment can only be maintained under the condition that a PD network port is damaged, and even if the bidirectional power supply cascading equipment damages part of the network port 30, other network ports 30 can also work normally, and the POE cascading equipment has better stability compared with the existing POE equipment and can be used without distinguishing the type of the network port.
In the bidirectional power supply cascade device, the port scanning module 10 scans the power supply state information of the plurality of ports 30, and the mode switching module 20 switches the connection relationship between the ports 30 and the power supply module 40 and the power receiving module 50 according to the power supply state information, so that the ports 30 have a bidirectional power supply function, and the ports 30 can be connected to both the power supply device and the power receiving device.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A bidirectional power supply cascade device is provided with a plurality of network ports and is characterized by comprising a power supply module, a power receiving module, a port scanning module and a mode switching module;
the power supply module is used for enabling the network port to be in a power supply mode and supplying power to external equipment;
the power receiving module is used for enabling the network port to be in a power receiving mode and can receive power supply of external equipment;
the port scanning module is connected with the mode switching module and used for scanning power supply state information of a plurality of network ports and sending the power supply state information to the mode switching module; the power supply state information is an independent power supply state or a non-independent power supply state;
and the mode switching module is used for receiving the power supply state information sent by the port scanning module and connecting the network port with the power supply module or the power receiving module according to the power supply state information.
2. The bi-directional power supply cascade device of claim 1, further comprising a forcing module;
the forcing module is connected with the network port and used for keeping the network port forcibly connected with the power supply module.
3. The bi-directional power supply cascade device of claim 1, wherein the port scan module comprises a scan unit and a stabilization detection unit;
the scanning unit is connected with the stability detection unit and used for detecting power supply information of the network port and sending the power supply information to the stability detection unit;
the stability detection unit is connected with the mode switching module and used for receiving the power supply information and detecting the state information of the network port; the stability detection unit can generate the power supply state information according to the power supply information and the state information and send the power supply state information to the mode switching module.
4. The bi-directional power supply cascade device of claim 3, wherein the port scan module further comprises a power supply detection unit;
the power supply detection unit is connected with the mode switching module and used for detecting whether a power supply supplies power or not, generating detection information and sending the detection information to the mode switching module;
the mode switching module is used for receiving the detection information and connecting the internet access with the power supply module or the power receiving module according to the detection information.
5. The bi-directional power supply cascade device of claim 4, wherein the mode switching module is configured to receive the detection information, and connect all the network ports to the power supply module if the detection information indicates that an external power source supplies power.
6. The bi-directional power supply cascade device of any of claims 4 or 5, wherein the port scanning module generates the detection information with a higher priority than the power supply status information.
7. The bi-directional power supply cascade device according to claim 1, wherein the mode switching module is configured to receive power supply status information sent by the port scanning module, and connect the network port to the power supply module if the power supply status information is in an independent power supply status; and if the power supply state information is in a non-independent power supply state, connecting the network port with the power receiving module.
8. The bi-directional power supply cascade device of claim 1, wherein the plurality of network ports are ordered in a priority order;
and the port scanning module is used for scanning the network ports according to the priority order.
9. The bi-directional power supply cascade device of claim 8, wherein the number of the power supply modules is plural, and the power receiving module is one;
the power receiving module is connected with all the network ports;
and the power supply modules are respectively connected with the corresponding network ports.
10. The bi-directional power supply cascade device of claim 9,
the port scanning module is used for scanning the power supply state information of the plurality of network ports according to the priority order and sending the power supply state information to the mode switching module;
the mode switching module is configured to receive power supply state information sent by the port scanning module, and if the power supply state information of a plurality of network ports is an independent power supply state, connect the network port with the highest priority to the power receiving module according to a priority order, and connect the remaining network ports to the power supply module.
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| CN202020367768.3U CN212163356U (en) | 2020-03-20 | 2020-03-20 | Bidirectional power supply cascade equipment |
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| CN202020367768.3U CN212163356U (en) | 2020-03-20 | 2020-03-20 | Bidirectional power supply cascade equipment |
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Inventor after: Tong Youlian Inventor after: Yang Guoquan Inventor after: Cao Yaxi Inventor after: Wang Keyan Inventor before: Tong Youlian Inventor before: Yang Guoquan Inventor before: Fuyaxi Inventor before: Wang Keyan |