CN204517833U - Power over Ethernet system and feeder ear equipment thereof - Google Patents
Power over Ethernet system and feeder ear equipment thereof Download PDFInfo
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- CN204517833U CN204517833U CN201520191315.9U CN201520191315U CN204517833U CN 204517833 U CN204517833 U CN 204517833U CN 201520191315 U CN201520191315 U CN 201520191315U CN 204517833 U CN204517833 U CN 204517833U
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- feeder ear
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Abstract
The utility model discloses a kind of Power over Ethernet system and feeder ear equipment thereof, this equipment comprises: multiple network interface; The multiple switching circuits connected one to one with described multiple network interface; The ON-OFF control circuit be connected with described multiple switching circuit, it sends start signal or shutdown signal to each described switching circuit, and the power supply circuits be connected between described multiple switching circuit and described ON-OFF control circuit, it is powered to the receiving end equipment accessing to the network interface be connected with this switching circuit when a switching circuit is opened.The utility model achieves a multiple network interface of PSE management of software ic by utilizing the switching effect of switching circuit, the normal power supply effect to PD end is ensure that by automatically switching, and on guarantee economy basis, effectively can improve the reliability of system, reduce cost widely.
Description
Technical field
The utility model relates to local area network (LAN) electric power system security fields, particularly relates to a kind of Power over Ethernet system and feeder ear equipment thereof.
Background technology
Along with the promulgation of IEEE802.3at standard, Power over Ethernet (Power over Ethernet is called for short POE) technology moves to maturity increasingly.POE system is by feeder ear equipment (Power Sourcing Equipment is called for short PSE) and receiving end equipment (Powered Device is called for short PD) two parts composition.PSE device is the equipment of powering for ethernet client equipment, and PD equipment is the PSE load accepting power supply, the i.e. client device of POE system, as IP phone, network security video camera, AP and other ethernet devices many such as palmtop PC (PDA) or charger for mobile phone.
The framework adopting two network interfaces or even multiple network interface to power, access in existing Power over Ethernet system more.The N number of PSE be exactly specifically, this electric power system comprises N (N >=2) individual network interface, connecting one to one with N number of network interface hold, and this N number of PSE end controls the power supply of N number of PD end respectively.
Although this framework can ensure the efficiency of powering to a certain extent, because this framework is the corresponding PSE end of a network interface, therefore there is circuit huge, the defect that cost is higher.
Utility model content
One of technical problem to be solved in the utility model needs to provide on a kind of basis ensureing power supplying efficiency, the feeder ear equipment of simple, the lower-cost Power over Ethernet system of circuit.
In order to solve the problems of the technologies described above, the embodiment of the application provide firstly a kind of feeder ear equipment of Power over Ethernet system, comprising: multiple network interface; The multiple switching circuits connected one to one with described multiple network interface; The ON-OFF control circuit be connected with described multiple switching circuit, it sends start signal or shutdown signal to each described switching circuit, and the power supply circuits be connected between described multiple switching circuit and described ON-OFF control circuit, it is powered to the receiving end equipment accessing to the network interface be connected with this switching circuit when a switching circuit is opened.
In one embodiment, described ON-OFF control circuit comprises: control chip, it comprises multiple pin, described multiple pin and described multiple switching circuit connect one to one, wherein, described control chip monitors the power supply state of described power supply circuits, by switching network interface to each switching circuit transmission high level or low level.
In one embodiment, described ON-OFF control circuit comprises: the multiple controlling brancher connected one to one with described multiple switching circuit, and controlling brancher described in each intercoms to send high level or low level respectively to the switching circuit be attached thereto mutually.
In one embodiment, described power supply circuits comprise: a feeder ear device chip; Switch element, it is connected between described feeder ear device chip and described multiple switching circuit; Inductive reactance, its one end is connected with described switch element, other end ground connection.
In one embodiment, each described switching circuit comprises: diode, and its positive terminal is connected with one end of described network interface; Switch element, it is connected with the switch element of the negative pole end of described diode, described ON-OFF control circuit and described power supply circuits.
In one embodiment, described switch element is metal-oxide-semiconductor or triode.
According to another aspect of the present utility model, additionally provide a kind of Power over Ethernet system, comprising: feeder ear equipment as above, and access to the receiving end equipment of network interface of described feeder ear equipment.
Compared with prior art, the one or more embodiments in such scheme can have the following advantages or beneficial effect by tool.
The application achieves a multiple network interface of PSE management of software ic by utilizing the switching effect of switching circuit, ensure that the normal power supply effect to PD end by automatically switching, and on guarantee economy basis, can effectively improve the reliability of system.In addition, due to the corresponding multiple network interface of PSE chip, therefore, it is possible in the architecture design of powering at follow-up use Multi-netmouth, reduce cost widely.
Other features and advantages of the utility model will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the technical solution of the utility model.The purpose of this utility model and other advantages realize by structure specifically noted in specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing is used to provide the further understanding of technical scheme to the application or prior art, and forms a part for specification.Wherein, the expression accompanying drawing of the embodiment of the present application and the embodiment one of the application are used from the technical scheme explaining the application, but do not form the restriction to technical scheme.
Fig. 1 is the schematic configuration schematic diagram of the Power over Ethernet system of the embodiment of the present application.
Fig. 2 is the electrical block diagram possessing the Power over Ethernet system of two network interfaces of the application's embodiment.
Fig. 3 is the electrical block diagram possessing the Power over Ethernet system of two network interfaces of another embodiment of the application.
Embodiment
Describe execution mode of the present utility model in detail below with reference to drawings and Examples, to the utility model, how application technology means solve technical problem whereby, and the implementation procedure reaching relevant art effect can fully understand and implement according to this.Each feature in the embodiment of the present application and embodiment, can be combined with each other under prerequisite of not conflicting mutually, the technical scheme formed is all within protection range of the present utility model.
Fig. 1 is the schematic configuration schematic diagram of the Power over Ethernet system of the embodiment of the present application.As shown in Figure 1, this Power over Ethernet system, it mainly comprises and turns ON-OFF control circuit 110, power supply circuits 120, multiple switching circuit (as switching circuit S1, S2 in Fig. 1 ... SN), multiple network interface is (as network interface W1, W2 in Fig. 1 ... WN) etc.
As shown in Figure 1, each switching circuit and each network interface connect one to one, and such as switching circuit S1 is connected with network interface W1, and switching circuit S2 is connected with network interface W2.ON-OFF control circuit 110, it is corresponding with multiple switching circuit connects, and is configured to send start signal or shutdown signal, namely high level or low level to each switching circuit, and these switching circuits carry out opening or shutoff operation according to the level be applied in.Power supply circuits 120, it is connected to multiple switching circuit and is connected with ON-OFF control circuit 110, these power supply circuits 120 are configured to power to the receiving end equipment accessing to the network interface be connected with this switching circuit when a certain switching circuit is opened, if such as switching circuit S1 opens, access to network interface W1 by detecting confirmed standard PD1, then power to this PD1.
Referring to Fig. 1, to carry out powering to the PD1 of access network interface W1, illustrate the course of work of the electric power system of the present embodiment.
On this system after electricity, ON-OFF control circuit 110 is started working, and ON-OFF control circuit 110 is to switching circuit S1 input high level, and switching circuit S1 opens this moment.Meanwhile, ON-OFF control circuit 110 is to other switching circuits (switching circuit S2 ~ SN) input low level, and other switching circuits cut out this moment.By as above operating, only by the power supply port open of corresponding network interface 1.
Power supply circuits 120 start to detect network interface 1 by this power supply port, have judged whether that standard compliant PD inserts, if detect that PD1 is inserted into, then power supply circuits 121 start to power to PD1.
In addition, in order to the power supplying efficiency prevented caused by PD1 power down (such as network interface 1 breaks down or PD1 damages or the netting twine of connection PD1 comes off) reduces, in the present embodiment, during power supply circuits 120 couples of PD1 power, ON-OFF control circuit 110 can detect the power supply state information of power supply circuits 120 in real time.
If it is normal to monitor power supply, keep current power supply state constant, if monitor power supply that any anomalies such as network interface 1 breaks down or PD1 damages or the netting twine that connects PD1 comes off cause when being affected, then power supply circuits 120 stop supplying power for outside.
And, at this stage switch control circuit 110 to switching circuit S2 input high level, opening switch circuit S2.Meanwhile, ON-OFF control circuit 110, to other switching circuits (switching circuit S1, S3 ~ SN) input low level, closes other switching circuits, is switched to the power supply port of corresponding network interface 2 like this.
If power supply circuits 120 detect the PD2 of the standard of access network interface W2, then power supply circuits 120 couples of PD2 power.If power supply circuits 120 do not detect the PD2 of standard, so ON-OFF control circuit 110 will ceaselessly switch, and is switched to the power supply port of corresponding network interface 3 ~ N, and the PD whether having access detected, until find PD, as guaranteeing the normal power supply of native system to PD.
Below for two network interfaces, describe each composition of the Power over Ethernet system of the application in detail.Fig. 2 is the electrical block diagram possessing the Power over Ethernet system of two network interfaces of the application's embodiment.
As shown in Figure 2, this electric power system mainly comprises: two network interfaces PD1, PD2; Two switching circuits K1, K2 connecting one to one with these two network interfaces; MCU (or Programmable Logic Controller) 110, it comprises multiple GPIO pin, and wherein pin IO1 is connected with switching circuit K1, pin IO2 and switching circuit K2; And power supply circuits 120, its one end is connected with MCU 10, and the other end is connected with switching circuit K1, K2.
In the present embodiment, because switching circuit K1 is identical with K2 structure, therefore only the structure of switching circuit K1 is described below.As shown in Figure 2, switching circuit K1 comprises switch element MOS1 and diode D1.Wherein, the positive terminal of diode D1 is connected with one end of network interface 1; Switch element MOS1, it comprises grid, source electrode and drain electrode, and its source electrode is connected with the negative pole end of diode D1, grid is connected with the pin IO1 of MCU 110, and drain electrode is connected with power supply circuits 120.
It should be noted that, although the structure of the present embodiment breaker in middle circuit is described above, other the switching circuit that can realize switching function also can be applied in the application.In addition, K1 with the K2 circuit structure in the present embodiment is identical, but also can take the different circuit structure with identical function in other embodiments.And switch element, except can using the metal-oxide-semiconductor in this example, can also select triode.
Next power supply circuits 120 are described.
Please refer to Fig. 2, power supply circuits 120 comprise a feeder ear device chip (rear title PSE chip), switch element MOS3 and inductive reactance R.Switch element MOS3 comprises grid, source electrode and drain electrode, and its grid is held with the GATE of PSE chip and is connected, and source electrode is connected with the drain electrode of switch element MOS1, MOS2 in switching circuit K1, K2.Inductive reactance R, its first end is connected with the drain electrode of switch element MOS3, the second end ground connection.In addition, the first end of inductive reactance R is also connected with the current detecting end of PSE chip, and PSE chip flows through the pressure drop that inductive reactance R produces carry out overcurrent protection by detecting electric current.
And the pin IO3 of MCU 110 holds with the GATE of PSE chip and is connected, in the process of powering to PD, MCU 110 detects current power supply state by the level state of monitoring GATE end.Or MCU 110 is by communication interface (such as 12C bus interface) and PSE chip communication, reads power supply state information and also can obtain current power supply state.
Below while with reference to Fig. 2 while describe the course of work of this electric power system in detail.
Upon power-up of the system, Programmable Logic Controller 110 is started working.The GPIO pin IO1 of Programmable Logic Controller 110 is set to high level, opens switch element MOS1, and the GPIO pin IO2 of Programmable Logic Controller 110 is set to low level, closing switch element MOS2.Opened by the PSE port of above-mentioned action by corresponding network interface 1.
PSE chip starts to detect network interface 1, judge whether that standard compliant PD inserts, if detect that PD1 is inserted into, then its GATE pin is set to high level by PSE chip automatically, and opened by switch element MOS3, power supply (is generally 40V ~ 57V, this example is 48V) electric current pass through netting twine, flow through switch element MOS1, switch element MOS3 to ground via PD1 from diode D1, form loop, namely power supply circuits 120 start to power to PD1.
If power supply is normal, keep current power supply state constant.If the power supply that any anomalies such as network interface 1 breaks down or PD1 damages or the netting twine of connection PD1 comes off cause is affected, then its GATE pin is set to low level by PSE chip, closing switch element MOS3, stops supplying power for outside.
And in power supply process, Programmable Logic Controller 110 can monitor the level state of the GATE pin of PSE chip by its GPIO pin IO3, also can be read the port status information of PSE chip by communication interface, inquire about current power supply state.When Programmable Logic Controller 110 gets abnormal information by the communication interface of pin IO3 or PSE chip, then pin IO1 is set to low level, pin IO2 is set to high level, thus closing switch element MOS1, open switch element MOS2, PSE interface is switched to network interface 2.
After this, PSE chip starts to detect the PD2 that whether there is the standard being linked into network interface 2, if detected, then its GATE pin is drawn high by PSE chip, opens switch MOS 3, powers to the PD2 of Access Network mouth 2.
In addition, Programmable Logic Controller 110 can also monitor the GATE pin status of PSE chip or the internal register of PSE chip, when the information detected shows that network interface 2 is not also access in the PD of standard, then Programmable Logic Controller 110 will ceaselessly switch, be switched to network interface 1 from network interface 2 or be switched to network interface 2 from network interface 1, until find PD, as the normal power supply guaranteeing PD.
The application is by utilizing the switching of metal-oxide-semiconductor to realize an individual port of PSE management of software ic N (N>=2), achieve by the effect ensureing PD normal power supply that automatically switches, and on guarantee economy basis, can effectively improve the reliability of system.In addition, due to the corresponding multiple port of PSE chip, therefore, it is possible in the architecture design of powering at follow-up use Multi-netmouth, reduce cost widely.
Although, ON-OFF control circuit embodiment illustrated in fig. 2 adopts a control chip, its inside realizes the output of low and high level according to the sequential of setting and state, thus realize open or closing switch circuit so switch network interface, but, the ON-OFF control circuit of the application can also adopt other forms of circuit, can be such as the multiple controlling brancher connected one to one with multiple switching circuit, each controlling brancher intercoms mutually to send high level or low level respectively to the switching circuit be attached thereto, and specifically please refer to Fig. 3.
Fig. 3 is the electrical block diagram possessing the Power over Ethernet system of two network interfaces of another embodiment of the application.This embodiment and the main distinction embodiment illustrated in fig. 2 are, ON-OFF control circuit 110 comprises two controlling brancher MCU 110a and MCU 110b.Due to other structures and Fig. 2 similar, only ON-OFF control circuit is described below, omits the description to other structures.
MCU 110a is connected by communication interface with MCU 110b, and the pin a of MCU 110a is connected with the grid of switch element MOS1, and the pin aa of MCU 110a is connected with the GATE pin of PSE chip, and MCU 110a is also connected by communication interface with PSE chip.The pin b of MCU 110b is connected with the grid of switch element MOS2, and the pin bb of MCU 110b is also connected with the GATE pin of PSE chip, and MCU 110b is also connected by communication interface with PSE chip.
Upon power-up of the system, pin a is set to high level by MCU 110a, opens switch element MOS1, and MCU110b is by after communicating with MCU 110a, and pin b is set to low level by MCU 110b, closing switch element MOS2.Opened by the PSE port of above-mentioned action by corresponding network interface 1.
If power supply is normal, keep current power supply state constant.If power supply goes wrong, then its GATE pin is set to low level by PSE chip, closing switch element MOS3, stops supplying power for outside.
And, in the process that the PD1 accessing to network interface 1 is powered, MUC 110a and MUC 110b can monitor the level state of the GATE pin of PSE chip by respective pin aa and pin bb, also can be read the port status information of PSE chip by communication interface, inquire about current power supply state.When monitoring abnormal electrical power supply, its pin a is set to low level by MCU 110a, closing switch element MOS1, MCU 110b is by after communicating with MCU 110a, pin b is set to high level by MCU 110b, opening switch element MOS2, thus PSE interface is switched to network interface 2.
After this, PSE chip starts to detect the PD2 that whether there is the standard being linked into network interface 2, if detected, then its GATE pin is drawn high by PSE chip, opens switch MOS 3, powers to the PD2 of Access Network mouth 2.
In addition, MCU 110a and MCU 110b can also monitor the GATE pin status of PSE chip or the internal register of PSE chip, when the information monitored shows that network interface 2 is not also access in the PD of standard, so MCU 110a and MCU 110b will ceaselessly switch, until find PD, as the normal power supply guaranteeing PD.
In sum, the application is by utilizing the switching of metal-oxide-semiconductor to realize an individual port of PSE management of software ic N (N>=2), achieve by the effect ensureing PD normal power supply that automatically switches, and on guarantee economy basis, can effectively improve the reliability of system.In addition, due to the corresponding multiple port of PSE chip, therefore, it is possible in the architecture design of powering at follow-up use Multi-netmouth, reduce cost widely.
Certainly; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection range that all should belong to claim of the present utility model.
Claims (7)
1. a feeder ear equipment for Power over Ethernet system, is characterized in that, comprising:
Multiple network interface;
The multiple switching circuits connected one to one with described multiple network interface;
The ON-OFF control circuit be connected with described multiple switching circuit, it sends start signal or shutdown signal to each described switching circuit, and
Be connected to the power supply circuits between described multiple switching circuit and described ON-OFF control circuit, it is powered to the receiving end equipment accessing to the network interface be connected with this switching circuit when a switching circuit is opened.
2. feeder ear equipment according to claim 1, is characterized in that, described ON-OFF control circuit comprises:
Control chip, it comprises multiple pin, and described multiple pin and described multiple switching circuit connect one to one,
Wherein, described control chip monitors the power supply state of described power supply circuits, by switching network interface to each switching circuit transmission high level or low level.
3. feeder ear equipment according to claim 1, is characterized in that, described ON-OFF control circuit comprises:
The multiple controlling brancher connected one to one with described multiple switching circuit, controlling brancher described in each intercoms to send high level or low level respectively to the switching circuit be attached thereto mutually.
4. the feeder ear equipment according to any one of claim 1-3, is characterized in that, described power supply circuits comprise:
A feeder ear device chip;
Switch element, it is connected between described feeder ear device chip and described multiple switching circuit;
Inductive reactance, its one end is connected with described switch element, other end ground connection.
5. feeder ear equipment according to claim 4, is characterized in that, each described switching circuit comprises:
Diode, its positive terminal is connected with one end of described network interface;
Switch element, it is connected with the switch element of the negative pole end of described diode, described ON-OFF control circuit and described power supply circuits.
6. feeder ear equipment according to claim 5, is characterized in that, described switch element is metal-oxide-semiconductor or triode.
7. a Power over Ethernet system, is characterized in that, comprising:
Feeder ear equipment according to any one of claim 1-6, and
Access to the receiving end equipment of the network interface of described feeder ear equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191315.9U CN204517833U (en) | 2015-03-31 | 2015-03-31 | Power over Ethernet system and feeder ear equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191315.9U CN204517833U (en) | 2015-03-31 | 2015-03-31 | Power over Ethernet system and feeder ear equipment thereof |
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| CN204517833U true CN204517833U (en) | 2015-07-29 |
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| CN201520191315.9U Expired - Fee Related CN204517833U (en) | 2015-03-31 | 2015-03-31 | Power over Ethernet system and feeder ear equipment thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109150551A (en) * | 2018-08-29 | 2019-01-04 | 普联技术有限公司 | Non-standard POE power supply circuit, power supply unit and method of supplying power to for network interface |
| CN107547210B (en) * | 2017-08-25 | 2021-06-18 | 锐捷网络股份有限公司 | Non-standard power supply equipment, powered equipment and system |
-
2015
- 2015-03-31 CN CN201520191315.9U patent/CN204517833U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107547210B (en) * | 2017-08-25 | 2021-06-18 | 锐捷网络股份有限公司 | Non-standard power supply equipment, powered equipment and system |
| CN109150551A (en) * | 2018-08-29 | 2019-01-04 | 普联技术有限公司 | Non-standard POE power supply circuit, power supply unit and method of supplying power to for network interface |
| CN109150551B (en) * | 2018-08-29 | 2021-08-20 | 普联技术有限公司 | Non-standard POE power supply circuit, power supply equipment and power supply method for network port |
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