CN101141263A - Method, control cell and system for controlling ethernet power supply - Google Patents

Method, control cell and system for controlling ethernet power supply Download PDF

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Publication number
CN101141263A
CN101141263A CNA2007101208543A CN200710120854A CN101141263A CN 101141263 A CN101141263 A CN 101141263A CN A2007101208543 A CNA2007101208543 A CN A2007101208543A CN 200710120854 A CN200710120854 A CN 200710120854A CN 101141263 A CN101141263 A CN 101141263A
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China
Prior art keywords
control
switch
over ethernet
signal
power over
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CNA2007101208543A
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Chinese (zh)
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黄赞
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Fujian Star Net Communication Co Ltd
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Fujian Star Net Communication Co Ltd
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Priority to CNA2007101208543A priority Critical patent/CN101141263A/en
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Abstract

The utility model relates to a method, a control unit and a system used for control the power supply of Ethernet, among which a control unit is arranged between the Ethernet power supply control unit and the control panel; the Ethernet power supply control unit is used to control the power supply of the exchanger or the operational board; the control panel is used to display the conditions of the exchanger or the operational board. As receiving the power supply switch signal, the control unit can switch the Ethernet power supply signal of the power supply control unit; as per the switched Ethernet power supply signal, the Ethernet power supply control unit will control the open or close of the Ethernet power supply at each port of the exchanger or the operational board. The utility model can remove the harmful effect arising from the plugging out of the electrified PoE operational board with large power, so as to achieve the open and close of PoE function.

Description

Method, control unit and the system of control Power over Ethernet
Technical field
The present invention relates to a kind of method of controlling Power over Ethernet, particularly a kind of method that turns on and off of may command switch Power over Ethernet function; The invention still further relates to a kind of control unit, particularly a kind of device of opening or turn-offing the Power over Ethernet function of switch or business board; The invention still further relates to a kind of system that controls Power over Ethernet, particularly a kind of business board is charged extract before the shutoff of may command Power over Ethernet or the system of shutoff, belong to the communication technical field relevant with the Power over Ethernet hot plug.
Background technology
Power over Ethernet (Power over Ethernet is called for short PoE) is a kind of technology of using the Ethernet electric energy transmitting.The Power over Ethernet technology is transmitted power supply and data-signal on same twisted-pair feeder, can reduce the wiring complexity and the cost of communication equipment, and provides convenience for low power network access equipment.
Existing P oE exchanger circuit structure as shown in Figure 1, the function of PoE control chip is according to standard IEEE 821.3af standard, discerns legal power receiving equipment, and to its power supply.General PoE control chip has enable pin, and this pin is imported effective voltage, and then the PoE chip can operate as normal, discerns power receiving equipment and opens the action of power supply; If import invalid voltage, then the PoE control chip then quits work, and promptly PoE stops power supply.Existing switch is that PoE enables effectively with PoE control chip default setting generally, if the equal conformance with standard of power receiving equipment that inserts then can externally be powered.Existing switch is not done the operation of opening and turn-offing to the PoE power supply of port, thereby brings risk for the hot plug of business board.For charged insertion, the general employing postpones to go up the unexpected increase that power technology prevents electric current in the prior art; But there is not ripe scheme for charged extracting.
For PoE equipment, when high-power PoE service card hot plug, can bring adverse influence to power-supply system, be example with the PoE exchange service plate of 48 ports:
1. when system operated at full capacity, the power of maximum possible consumption was: (15.4*48+120)/and 0.85=1010W; Wherein, standard IEEE 802.3af regulation: the maximum PoE through-put power of switch ports themselves is 15.4W, and 15.4W is the power consumption of each port of POE equipment, and 120W is the power consumption of other parts on the circuit board, the 0.85th, and power supply conversion efficiency;
2. the electric current of connector of flowing through is: 1010/48=21A; Standard IEEE 802.3af regulation: the PoE voltage range of switch ports themselves is 44V-52V, and setting voltage is 48V here.
In the existing exchanger circuit PoE control chip directly being set to PoE enables effectively, PoE equipment is when using hot plug technology, and the voltage that the charged insertion of circuit board can solve caused whole the equipment of charged insertion with postponing to power on descends and influences problem such as other parts work; But PoE equipment is when using hot plug technology, and the charged voltage that can cause whole equipment of extracting of circuit board rises to, and serious meeting spark occurs in the connector junction, initiation potential.
Summary of the invention
First purpose of the present invention provides a kind of method of controlling Power over Ethernet, and existing high-power PoE business board is charged extracts the harmful effect that causes in order to solve, and realizes turning on and off of control PoE function.
Second purpose of the present invention provides a kind of control unit, and existing high-power PoE business board is charged extracts the harmful effect that causes in order to solve, and realizes turning on and off of control PoE function.
The 3rd purpose of the present invention provides a kind of system that controls Power over Ethernet, and existing high-power PoE business board is charged extracts the harmful effect that causes in order to solve, and realizes turning on and off of control PoE function.
In order to realize first purpose of the present invention, the invention provides a kind of method of controlling Power over Ethernet, comprise: between the control panel of the Power over Ethernet control unit of controlling switch or business board function of supplying power and demonstration switch or business board state information, a control unit is set, wherein:
Control unit switches the Power over Ethernet signal of Power over Ethernet control unit after receiving the power supply switching signal;
The Power over Ethernet control unit is according to the Power over Ethernet signal after switching, and what each port ethernet of control switch or business board was powered opens or turn-off.
In the technique scheme, one control unit is set between Power over Ethernet control module and control panel, switch by the Power over Ethernet signal of control unit the Power over Ethernet control unit, before business board is extracted, switch the Power over Ethernet signal, it is invalid will enabling effective Power over Ethernet signal transformation, so when charged extracting, close powerful business board, the circuit board consumed current diminishes, and solves the voltage that causes when extracting and rises to and dangerous hidden danger.
In the technique scheme, can also comprise: after control unit is received mode switching signal, the information that shows each port of switch in the control panel is switched; Control panel shows the information of switching back each port of switch.
After control unit is received mode switching signal, obtain state after current switch or business board switch, and send display control signal to control panel according to mode switching signal; Control panel shows the work at present state that switches the back switch according to the display control signal that receives.
The technical scheme of replenishing can further show the state after the switching, makes things convenient for the user directly to read business board or the present operating state of switch, avoids misoperation, when being in swap status as business board or switch, not directly extracts business board.
In order to realize second purpose of the present invention, the invention provides a kind of control unit, comprising:
Receiver module is connected with processing module, is used to receive switching signal, and input processing module;
Processing module is connected with receiver module, is used for the type of switching signal is differentiated, and judges that whether switching signal is the power supply switching signal, is the Power over Ethernet signal of then exporting after the switching; Otherwise output mode switching signal.
In the technique scheme, processing module receives the switching signal of control panel, the Power over Ethernet signal of opening or turn-offing of the control Power over Ethernet after output is switched, before business board is extracted, switch the Power over Ethernet signal, the Power over Ethernet signal transformation of having opened is shutoff, so when charged extracting, close powerful business board, the circuit board consumed current diminishes, and solves the voltage that causes when extracting and rises to and dangerous hidden danger.
In order to realize the present invention's the 3rd purpose; The invention provides a kind of system of Control ethernet power supply; The control panel and the POE control module that comprise at least one switch and each port status indicator lamp of control switch; Described POE control module is connected with switch and control panel thereof; The POE of each port of control switch; Switch or its control panel also are provided with mode switch element; Between POE control module and switch or its control panel control module is set also; Wherein
Mode switch element links to each other with control unit, is used for sending switching signal to control unit;
Control unit is connected with the Power over Ethernet control unit, be used to receive the power supply switching signal after, the control signal that enables of Power over Ethernet control unit is switched the Power over Ethernet signal after send switching; After receiving mode switching signal, the information that shows each port of switch in the control panel is switched; Send sign and switch the display control signal of back switch or business board work at present state;
The Power over Ethernet control unit links to each other with each switch ports themselves of switch or its control panel, is used for according to the Power over Ethernet signal after switching, the Power over Ethernet function of opening or turn-offing each switch ports themselves.
In the technique scheme, one control unit is set between Power over Ethernet control unit and control panel, switch by the Power over Ethernet signal of control unit the Power over Ethernet control unit, and then the opening or turn-offing of the Power over Ethernet of control switch each port, before business board is extracted, switch the Power over Ethernet signal, it is invalid will enabling effective Power over Ethernet signal transformation, so when charged extracting, close powerful business board, the circuit board consumed current diminishes, and solves the voltage that causes when extracting and rises to and dangerous hidden danger.
Below by drawings and Examples, technical scheme of the present invention is described in further detail
Description of drawings
Fig. 1 is an existing switch Power over Ethernet circuit structure diagram;
Fig. 2 controls the system embodiment structural representation of Power over Ethernet for the present invention;
Fig. 3 is a control panel embodiment schematic diagram among Fig. 2;
Fig. 4 moves schematic diagram for the method embodiment that the present invention controls Power over Ethernet;
Fig. 5 uses schematic diagram for control unit embodiment one of the present invention;
Fig. 6 uses schematic diagram for control unit embodiment two of the present invention;
Fig. 7 is a control unit program running schematic diagram of the present invention.
Embodiment
Referring to Fig. 2, control the system embodiment structural representation of Power over Ethernet for the present invention.Present embodiment comprises control switch or business board the change planes control panel and the Power over Ethernet control unit of each port status indicator light.Power over Ethernet (PoE) control unit is connected with switch or its control panel, the Power over Ethernet of control switch, and switch or its control panel also are provided with mode switch element C.
System to the control Power over Ethernet of Fig. 2 embodiment describes below:
Control panel comprises port module A (built-in several ports) and corresponding state indicating module B, the state that shows each port of switch, also comprise mode switch element C, be connected with control unit, mode switch element C is controlled by user or switch, press mode switch element C or switch inside the user and can trigger switching signal by mode switch element C when switching, switching signal comprises two kinds: mode switching signal and power supply switching signal, and two kinds of switching signals that control panel or switch inside will be triggered are input to control unit;
Control unit, be connected with mode switch element C and PoE control unit, after being used to receive the signal of power supply switching, the PoE control unit is carried out the switching of enable signal, receive switching signal as control unit among Fig. 2, be judged as the power supply switching signal, then current power supplying control signal is switched, and send enable signal after power supply is switched to control panel, send the effective or invalid control signal that enables after switching to the PoE control unit; After control unit receives mode switching signal, the information that shows each port of switch in the control panel is switched, the demonstration of state of a control indicating module B, receive switching signal as control unit among Fig. 2, be judged as mode switching signal, then current mode of operation is switched, and the operating state after the control panel sending mode switches needs control panel to cooperate the demonstration switching signal that shows lattice port status information, so that each port display mode of switch switches the state information under back work at present pattern; Send display control signal to control panel, described display control signal sign is switched the work at present state of back switch or business board, switches the current mode of operation of back switch as the display module D demonstration of control panel among Fig. 2: PoE pattern or switch mode;
The PoE control unit links to each other with control unit and control panel middle port modules A, according to the power supply switching signal of control unit, opens or turn-off the Power over Ethernet function of each switch ports themselves of switch or its control panel.
Increase display module in the present embodiment and shown the business board after switching or the work at present state of switch: when business board or switch show the PoE pattern before switching, be in switch mode after the switching; When before switching, being in switch mode, switching the back and show the PoE pattern.The display module D that increases can further show and switches the back current working state, makes things convenient for the user directly to read business board or the present mode of operation of switch, avoids misoperation, when being in switch mode as business board or switch, not directly extracts business board.
Employing is opened or turn-offed to PoE function to each port of switch: by control unit control have the PoE control unit that enables (Enable) pin (as, the PoE control chip) enable signal, when this pin being set when enabling useful signal in the control unit, the PoE control unit can operate as normal, and each port of switch can externally be powered; When control unit switches the back for enabling when invalid, PoE controls and singly quits work, and each port can not externally be powered.Can control this pin of PoE control unit on the hardware by a special signal, thus the function that each port PoE was opened or turn-offed in realization.
Present embodiment is provided with a control unit between PoE control unit and control panel, switch by the enable signal of control unit the Power over Ethernet of PoE control unit, before business board is extracted, switch the Power over Ethernet signal, it is invalid will enabling effective Power over Ethernet signal transformation, so when charged extracting, close powerful business board, the circuit board consumed current diminishes, and solves the voltage that causes when extracting and rises to and dangerous hidden danger.
Fig. 3 is a control panel embodiment schematic diagram among Fig. 2.Present embodiment is that example is illustrated so that mode switch button C ' to be set on control panel as mode switch element; but mode switch element of the present invention is not limited in button; the any unit that can realize handoff functionality; various forms of switches; as button; toggle switch; the drawing-aid device of knob or setting and switch inside etc.; the position can be arranged at switch inside; also can be arranged on the control panel; as long as realize handoff functionality; the signal that transmission is switched the Power over Ethernet signal all belongs to the protection range of mode switch element of the present invention.Display module is an example with pattern indicator light D ' in the present embodiment; The state indicating module is an example with the status indicator lamp B ' of each port, and port module is an example with each port A '.Those of ordinary skills should understand, and control panel of the present invention is the device that has electrical equipment to be connected with switch or business board, is this area common technology term, rather than a shell that does not have electrical equipment to be connected with switch or business board.
Fig. 3 embodiment is example with the 8 port switch, but actual may be the port of 24 ports, 48 ports or other number.The right half part of control panel is a general configuration of switch, comprises switch ports themselves A ' and port status indicator light B '.Present embodiment middle port status indicator lamp B ' has multiple function, not only can read and show the information (in prior art the status indicator lamp of each port generally all have this function) of each port of switch under swap status, show the various states such as speed whether each port connects (LinkUp), connects; Can also read and show the state information of the Power over Ethernet of each port of switch, obtain opening or turn-offing of Power over Ethernet, show whether each port externally powers, the various states such as whether overload of powering.
Present embodiment middle port indicator light can read the state information of each port of switch simultaneously, but receives when showing switching signal, only shows the corresponding state information under the concrete a certain pattern; Also can after receiving the demonstration switching signal, just read the corresponding state information of each port under the concrete pattern.Described read operation can be realized synchronously, also can asynchronously realize, all should be within technical solution of the present invention scope required for protection as long as can be implemented in the execution mode that shows each port corresponding state information under the concrete pattern.。
Compare with control panel of the prior art, present embodiment also comprises a switching key C ' and a pattern indicator light D '.Compare with embodiment among Fig. 2, switching key can send two kinds of switching signals among Fig. 3 embodiment: to PoE control unit power signal that switches and the signal that status indicator lamp is carried out mode switch.For these two kinds of switching signals, two buttons can be set represent two kinds of switchings, the button that the signal kinds selection that the user is switched as required needs, but also can represent two kinds of switching signals with two kinds of operations of a switching key C ' with shown in Fig. 3 embodiment:
1. short pressing as less than 2 seconds, need to represent the sending mode handover information.Press switching key C ' is of short duration, control panel sending mode switching signal then, control unit sends the signal that the display message of each port is switched to control panel, switches the information of each port of back by the status indicator lamp B ' display mode of each port.Mode of operation after the mode switching signal while, also trigger mode indicator light D ' demonstration was switched: when before switching, being in the PoE pattern, the current switch mode that is in of demonstration after switching; When before switching, being in switch mode, switching the back and show that current business plate or switch are in the PoE pattern.After mode switch, what port status indicator light B ' showed is the various states of each port of the pattern correspondence after switching: under switch mode, the various states such as speed that can indicate port whether to connect, connect, under the PoE pattern, the indication port various states such as whether overload of whether externally powering, power, as mentioned above, each port led can read or the asynchronous state that reads each port simultaneously, and shows and the corresponding to state information of work at present state under different mode; And pattern indicator light D ' shows is operating state after switching, has only two kinds of forms: PoE pattern or switch mode;
2. the long switching key C ' that presses, as greater than 3 seconds, send the power supply switching signal, expression need be to the power switching of enable signal of PoE control unit, need pattern indicator light D ' just can grow under the PoE pattern by switching key C ' this moment, control panel sends the power supply switching signal, the mode of operation after the also corresponding demonstration of pattern indicator light D ' this moment is switched: owing to when being in the PoE pattern before switching, show switch mode so switch the back.The long expression during by switching key to the switching of powering of PoE control unit, thereby send the power supply switching signal, if before switching, be in PoE allow power supply state (as, enable useful signal by control unit to PoE control unit input), be in PoE (enabling invalid signals to the input of the PoE control unit) state of stopping power supply after then switching by control unit; Otherwise be in PoE after then switching and allow power supply state.In Fig. 2, after control unit is received switching signal, when the Power over Ethernet signal being switched through being judged as, then send and enable figure signal to the PoE control unit, if enable signal is effective before switching, then switch the back enable signal become invalid, otherwise then become effectively.When opening or turn-off PoE, the function of exchange of each port still can normally be carried out, and harmful effects such as disconnection, error in data and loss of data can not occur connecting.
After switching, what port status indicator light B ' showed is the various states that switch each port of back.Can know the overall work pattern of current business plate and the exchange or the PoE situation of each port by pattern indicator light D ' and port status indicator light B '.Prior art middle port status indicator lamp can read and show the swap status of each port, whether the indication port connects the speed of (Link Up), connection etc., but can't show the Power over Ethernet situation, present embodiment middle port status indicator lamp B ' not only can read and show the information of each port of switch under swap status, shows the states such as speed whether each port connects, connects; Can also read and show the state information of the Power over Ethernet of each port of switch, obtain opening or turn-offing of Power over Ethernet, show whether each port externally powers, the various states such as whether overload of powering.
As mentioned above, present embodiment middle port indicator light can read the state information of each port of switch simultaneously; Also can after receiving the demonstration switching signal, just read the corresponding state information of each port under the concrete pattern.Described read operation can be realized synchronously, also can asynchronously realize, all should be within technical solution of the present invention scope required for protection as long as can be implemented in the execution mode that shows each port corresponding state information under the concrete pattern.
Referring to Fig. 4, the method embodiment that controls Power over Ethernet for the present invention moves schematic diagram.Contrast Fig. 2 and Fig. 3 are illustrated the method that the present invention controls Power over Ethernet below:
After step 0. switch complete machine powering or PoE business board heat were inserted, the business board program brought into operation;
Step 1. business board or switch initial condition are: each port allows the PoE power supply, simultaneously the current switch mode that is in of pattern indicator light D ' indication;
Step 2. is pressed switching key C ' by short, and pattern indicator light D ' changes, and shows that switching current switch in back or business board are in the PoE pattern.The Presentation Function of port status indicator light B ' also changes, and shows the information of switching each port of back: be under the switch mode at pattern indicator light D ', what port status indicator light B ' showed is the exchange message of each port; Be under the PoE pattern at pattern indicator light D ', port status indicator light B ' shows the PoE information of each port;
In a certain moment, the user needs the charged PoE business board of extracting, and need carry out following operation:
Step 30 by checking pattern indicator light D ', is confirmed that business board is in the PoE pattern, otherwise is needed weak point to press switching key C ', switches to the PoE state;
Step 3, under the PoE pattern, long button C ', then the PoE function of all of the port is closed, and this can find out that port can't externally be powered by the status indicator lamp of each port of switch on the control panel, and the power consumption of business board is reduced to minimum;
Step 5. user can extract the PoE business board;
If the user is (the current switch mode that is in of pattern indicator light indication this moment) after turn-offing the PoE function, do not want to extract the PoE business board, and want to recover the PoE power supply.Need carry out following steps and open the PoE function:
Step 4. confirm that business board is in the PoE pattern, otherwise weak point is pressed switching key C ', switches to the PoE pattern by checking pattern indicator light D ';
Under the PoE pattern, length is pressed switching key C ', and then the PoE function of all of the port is unlocked, and port can externally be powered, as the transfer process of step 4 among Fig. 4 to step 1.
In the present embodiment method, one control unit is set between Power over Ethernet control unit and control panel, switch by the Power over Ethernet signal of control unit the Power over Ethernet control unit, before business board is extracted, switch the Power over Ethernet signal, it is invalid will enabling effective Power over Ethernet signal transformation, so when charged extracting, close powerful business board, the circuit board consumed current diminishes, and solves the voltage that causes when extracting and rises to and dangerous hidden danger.And can further show the mode of operation after the switching, make things convenient for the user directly to read the present mode of operation of business board or switch and the exchange or the electric power thus supplied of each port.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.Can adopt CPLD (Complex ProgrammableLogic Device as above-mentioned control unit; abbreviation CPLD), programmable logic device (Programmable LogicDevice; abbreviation PLD), field programmable gate array (Field Programmable Gate Array; be called for short FPGA) etc.; realize above-mentioned functions by CPU and related software, any execution mode of finishing by the relevant hardware of program command that Power over Ethernet is switched all should be within technical solution of the present invention scope required for protection.
Referring to Fig. 5, for control unit embodiment one of the present invention uses schematic diagram.As shown in Figure 5, present embodiment comprises:
Receiver module is connected with processing module, is used to receive switching signal, and input processing module;
Processing module is connected with receiver module, is used for the type of switching signal is differentiated, and judges that whether switching signal is the power supply switching signal, is the Power over Ethernet signal of then exporting after the switching; Otherwise output mode switching signal.
As shown in Figure 5, the control unit of present embodiment can be exported the Power over Ethernet signal after the switching, make the power supply signal after the switching can control the PoE control unit, and then control opening or turn-offing of each switch ports themselves Power over Ethernet, before business board is extracted, the Power over Ethernet signal transformation of having opened is shutoff, so when charged extracting, close powerful business board, the circuit board consumed current diminishes, and solves the voltage that causes when extracting and rises to and dangerous hidden danger.
Referring to Fig. 6, for control unit embodiment two of the present invention uses schematic diagram.Present embodiment and Fig. 5 are similar, have all functions of Fig. 5 and effect, but present embodiment receiver module and Fig. 5 are different:
Among Fig. 5 embodiment, receiver module receives extraneous switching signal, can adopt shown in Fig. 2 system configuration schematic diagram, and a mode switch element is set on control panel, and the switching signal of desampler or its control panel also is forwarded to control unit.Receiver module is not connected with control panel among Fig. 6 embodiment, but be used for directly receiving switching signal, promptly can be regarded as one with Fig. 2 in the similar functional module of mode switch element, the function of mode switch element is built into the receiver module of control unit, at this moment receiver module need not be connected with switch or its control panel, but can directly receive switching signal, as a button is set at control unit, the user sends different switching signals by pressing corresponding button, and receiver module is interpreted as that one receives the functional module of switching signal.In a word, receiver module is mainly used in the signal that receive to switch, and anyly can realize receiving the execution mode of switching signal function all within receiver module of the present invention scope required for protection.
Present embodiment is to the further refinement of processing module among Fig. 5, and as shown in Figure 6, the present embodiment processing module comprises:
Differentiate submodule, be connected, be used for the type of switching signal is differentiated, when switching signal is the power supply switching signal, triggers Power over Ethernet and enable submodule with receiver module; Otherwise trigger mode control submodule and pattern display sub-module;
Power over Ethernet enables submodule, and differentiates submodule and is connected, be used in switching signal during for the power supply switching signal, the control Power over Ethernet after the output switching enable control signal;
Pattern control submodule is connected with the differentiation submodule, is used for when switching signal is mode switching signal, sends each port to control panel and shows the signal that switches the back state; Show the state that switches each port under the back work at present pattern as each port led;
The pattern display sub-module, be connected with the differentiation submodule, be used for the display control signal after the output mode switching signal, described display control signal sign is switched the work at present pattern of back switch, as shown in Figure 6, display control signal is imported display module in the control panel, to show the work at present pattern of switching the back switch: PoE pattern or switch mode.
Concrete can receive switching signal as receiver module in conjunction with the explanation of method embodiment among Fig. 2-Fig. 4; Power over Ethernet enables submodule and can link to each other with the PoE control unit, enable invalid or useful signal after output is switched, the PoE control unit is connected with the port module (as shown in Figure 2) of switch or its control panel again, according to enabling invalid or useful signal, the power supply state of each port is switched; The pattern display sub-module can link to each other with the pattern indicator light, shows the operating state after switching; Pattern control submodule links to each other with status indicator lamp, shows the state information of each port under the different mode.
The system of control Power over Ethernet can realize function corresponding referring to the application schematic diagram of Fig. 5-Fig. 6 and the explanation of Fig. 2 system embodiment, exemplifies no longer one by one.Fig. 5-Fig. 6 is giving an example and refinement to the control unit built-in function; those of ordinary skills should understand; the control unit of realizing the Ethernet controlled function maybe can be by adopting realization function corresponding such as CPLD, PLD or FPGA; illustrate with CPLD below; but do not represent restriction, anyly existing P oE control chip is enabled useful signal control the execution mode realizing PoE is switched all within technical solution of the present invention scope required for protection technical solution of the present invention scope required for protection.Below illustrate by CPLD:
CPLD is a hardware logic electric circuit, can respond rapidly for the input signal of outside, has guaranteed the real-time and the reliability of control.As shown in Figure 2, CPLD can comprise 2 input signals: reference clock signal (not marking among Fig. 2) and switching signal, clock signal is used for timing among Fig. 2 embodiment, and whether switching signal is used to survey switching key and is pressed, and promptly whether control panel sends switching signal.Certainly, also can be described as control unit among Fig. 6 embodiment, a receiver module is set on control unit, finish and the mode switch element identical functions.If two switching keys are set, represent different switching signals respectively, the CPLD that present embodiment exemplified input reference clock not then, which kind of switching signal can directly judge according to different buttons is, but the subsequent operation of judging after the switching signal is consistent: carry out the mode switch or the switching of Power over Ethernet.Control unit CPLD can comprise 3 output signals: one is used for sending display control signal to the display module of control panel, can views current working state by display module; Whether power supply that is used to control the PoE circuit, sends enable signal (enabling effective or invalid) after switching as Fig. 2 to the PoE control unit; An indicator light that is used to control each port sends display control signal as Fig. 2 to the state indicating module of control panel, shows the corresponding state information under the mode of operation after the switching of each port.
Description according to Fig. 2-Fig. 4 embodiment part, switching key have long by with short by 2 kinds of operations, so if a switch unit is set, then present embodiment is differentiated 2 kinds of operations by reference clock signal: reference clock signal carries out timing to the switching key state, if button is pressed the time (present embodiment is set 2 seconds) less than the weak point of setting, promptly be pressed less than 2 seconds of switching key C ' as shown in Figure 3 is released, then be judged as short by; If button, as is pressed more than 3 seconds by time (present embodiment was set up an office 3 seconds) greater than the length of setting, then be judged as grow by.For greater than 2 seconds less than 3 seconds operation, be designed to long by with short by separation; If the user operates in this scope switching key accidentally, judge that still it is short pressing, to prevent misoperation the PoE power supply is cut off.
By CPLD the enable signal of PoE control unit (as, PoE control chip) is controlled, thereby realized the function of opening or turn-offing each port PoE: this pin is set when enabling useful signal as CPLD, each port of switch can externally be powered; When this pin for enabling when invalid, each port can not externally be powered.
Referring to Fig. 7, be control unit program running schematic diagram of the present invention.The process of method embodiment is similar among the program running of Fig. 7 and Fig. 4, but present embodiment is the inner concrete conversion process of control unit, and the function that can be achieved as follows: change between 4 kinds of states, changing the reason that triggers is the switching signal of switching key; The result who changes is the variation of pattern indicator light signal and PoE enable signal, specifically can participate in the explanation of method embodiment among Fig. 2-Fig. 4.The direction of arrow points for transforming among Fig. 7, wherein solid arrow represents that the Power over Ethernet mode is constant, changes the information that each port shows by short by switching key; Dotted arrow is represented not only to change the information that each port shows, and the Power over Ethernet pattern is changed.That represents among Fig. 7 and Fig. 4 is slightly different, and Fig. 4 is the display message of pattern indicator light conversion process, the information of Fig. 7 for showing in each port conversion process.
The foregoing description relates generally to 2 kinds of indicator lights, help out as pattern indicator light D ' among Fig. 3, current switch mode or the PoE pattern of being in of prompting client, and port led B ' shows the state information of each port under the concrete pattern, read the state of switch according to the pattern of correspondence, and show by the color of pattern indicator light D ', under switch mode, the swap status of port led B ' indication port; Under the PoE pattern, the PoE state of port led B ' indication port.
The various embodiments described above by control Power over Ethernet enable effective or invalid, the opening or turn-offing of control appliance Power over Ethernet, before equipment carries out charged extracting, close powerful device, make the circuit board consumed current as far as possible little, thereby solve that the voltage cause when extracting rises to and problem such as dangerous hidden danger.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (11)

1. method of controlling Power over Ethernet, it is characterized in that, be connected and show between the control panel of switch or business board state information at the Power over Ethernet control unit of control switch or business board function of supplying power with switch or business board a control unit is set, wherein:
Control unit switches the Power over Ethernet signal of Power over Ethernet control unit after receiving the power supply switching signal;
The Power over Ethernet control unit is according to the Power over Ethernet signal after switching, and what each port ethernet of control switch or business board was powered opens or turn-off.
2. the method for control Power over Ethernet according to claim 1 is characterized in that, also comprises:
After control unit is received mode switching signal, the information that shows each port of switch in the control panel is switched;
Control panel shows the information of switching back each port of switch.
3. the method for control Power over Ethernet according to claim 2 is characterized in that, after control unit is received mode switching signal, also comprises:
Obtain state after current switch or business board switch according to mode switching signal, and send display control signal to control panel;
Control panel shows the work at present state that switches back switch or business board according to the display control signal that receives.
4. a control unit is characterized in that, comprises receiver module and processing module, wherein:
Receiver module is connected with processing module, is used to receive switching signal, and input processing module;
Processing module is connected with receiver module, is used for the type of switching signal is differentiated, and judges that whether switching signal is the power supply switching signal, is the Power over Ethernet signal of then exporting after the switching; Otherwise output mode switching signal.
5. control unit according to claim 4 is characterized in that, described processing module comprises: differentiate submodule, be connected with receiver module, be used for the type of switching signal is differentiated, when switching signal is the power supply switching signal, triggers Power over Ethernet and enable submodule; Otherwise trigger mode control submodule and pattern display sub-module;
Power over Ethernet enables submodule, is connected with the differentiation submodule, is used for when switching signal is the power supply switching signal control signal that enables to Power over Ethernet after output is switched;
Pattern control submodule is connected with the differentiation submodule, is used for when switching signal is mode switching signal, sends the signal that each port display mode of switch switches the back state information;
The pattern display sub-module is connected with the differentiation submodule, is used for when switching signal is mode switching signal, and the output display control signal, described display control signal sign is switched the work at present state of back switch or business board.
6. the system of Control ethernet power supply; The control panel and the POE control module that comprise at least one switch and each port status indicator lamp of control switch; Described POE control module is connected with each switch ports themselves of switch or its control panel; The POE of each port of control switch; It is characterized in that; Switch or its control panel also are provided with mode switch element; Between POE control module and switch or its control panel control module is set also; Wherein
Mode switch element links to each other with control unit, is used for sending switching signal to control unit;
Control unit is connected with the Power over Ethernet control unit, be used to receive the power supply switching signal after, the control signal that enables of Power over Ethernet control unit is switched the Power over Ethernet signal after send switching; After receiving mode switching signal, the information that shows each port of switch in the control panel is switched; Send sign and switch the display control signal of back switch or business board work at present state;
The Power over Ethernet control unit links to each other with each switch ports themselves of switch or its control panel, is used for according to the Power over Ethernet signal after switching, the Power over Ethernet function of opening or turn-offing each switch ports themselves.
7. the system of control Power over Ethernet according to claim 6 is characterized in that, described control unit is FPGA (Field Programmable Gate Array) control chip, field programmable gate array or CPLD.
8. according to the system of claim 6 or 7 described control Power over Ethernet, it is characterized in that described Power over Ethernet control unit is the PoE control chip.
9. according to the system of claim 6 or 7 described control Power over Ethernet, it is characterized in that described mode switch element is button, button, toggle switch or the knob that is arranged at control panel, or the drawing-aid device of switch inside.
10. the system of control Power over Ethernet according to claim 8 is characterized in that, described control unit links to each other with the enable pin of PoE control chip, opening or turn-offing by described pin control Power over Ethernet.
11. the system according to claim 6 or 7 described control Power over Ethernet is characterized in that, described control unit comprises:
Differentiate submodule, be connected, be used for the type of switching signal is differentiated, when switching signal is the power supply switching signal, triggers Power over Ethernet and enable submodule with mode switch element; Otherwise trigger mode control submodule and pattern display sub-module;
Power over Ethernet enables submodule, and differentiates submodule and is connected, be used in switching signal during for the power supply switching signal, the control Power over Ethernet after the output switching enable control signal;
Pattern control submodule is connected with the differentiation submodule, is used for when switching signal is mode switching signal, sends the signal that each port display mode of switch switches the back state information;
The pattern display sub-module is connected with the differentiation submodule, is used for when switching signal is mode switching signal the output display control signal;
Also be provided with display module on the control panel, be connected, be used to show the work at present state that switches back switch or business board with described pattern display sub-module.
CNA2007101208543A 2007-08-28 2007-08-28 Method, control cell and system for controlling ethernet power supply Pending CN101141263A (en)

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CN101826970A (en) * 2009-01-05 2010-09-08 3柯姆公司 Intelligent power management of an intermediate network device switching circuitry and poe delivery
CN101958797A (en) * 2010-06-02 2011-01-26 福建星网锐捷网络有限公司 Ethernet power supply system and operating method
CN101738977B (en) * 2009-11-24 2012-05-23 福建星网锐捷网络有限公司 Method for switching operating mode of main control chip and network equipment thereof
CN102833079A (en) * 2012-08-31 2012-12-19 杭州华三通信技术有限公司 Method and device for preventing over-supply of pluggable power supply
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CN104348630A (en) * 2013-07-25 2015-02-11 昆达电脑科技(昆山)有限公司 POE power supply system
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US10042403B2 (en) 2010-08-30 2018-08-07 Philips Lighting Holding B.V. Management of power-over-ethernet installation
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CN101826970A (en) * 2009-01-05 2010-09-08 3柯姆公司 Intelligent power management of an intermediate network device switching circuitry and poe delivery
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CN101958797A (en) * 2010-06-02 2011-01-26 福建星网锐捷网络有限公司 Ethernet power supply system and operating method
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US10042403B2 (en) 2010-08-30 2018-08-07 Philips Lighting Holding B.V. Management of power-over-ethernet installation
CN102833079A (en) * 2012-08-31 2012-12-19 杭州华三通信技术有限公司 Method and device for preventing over-supply of pluggable power supply
CN102833079B (en) * 2012-08-31 2016-04-20 杭州华三通信技术有限公司 A kind of prevent pluggable power supply from crossing confession method and device
CN103108446A (en) * 2012-11-20 2013-05-15 上海斐讯数据通信技术有限公司 Switchboard internet access indicator light multi-status display system
CN103108446B (en) * 2012-11-20 2015-04-22 上海斐讯数据通信技术有限公司 Switchboard internet access indicator light multi-status display system
CN103905211A (en) * 2012-12-24 2014-07-02 上海斐讯数据通信技术有限公司 Method for realizing lamp lighting under power supply state of POE power supply equipment
CN104348630A (en) * 2013-07-25 2015-02-11 昆达电脑科技(昆山)有限公司 POE power supply system
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CN104023436A (en) * 2014-05-26 2014-09-03 上海斐讯数据通信技术有限公司 Method for controlling switch port LED indicating lamps
CN106209388B (en) * 2015-04-30 2019-03-19 华为技术有限公司 A kind of power management method of Power over Ethernet, power supply unit and power receiving equipment
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CN112155303A (en) * 2020-10-28 2021-01-01 浙江月立电器有限公司 Electric hair drier

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