CN105119661A - Multichannel load sharing power supply system - Google Patents

Multichannel load sharing power supply system Download PDF

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Publication number
CN105119661A
CN105119661A CN201510428063.1A CN201510428063A CN105119661A CN 105119661 A CN105119661 A CN 105119661A CN 201510428063 A CN201510428063 A CN 201510428063A CN 105119661 A CN105119661 A CN 105119661A
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CN
China
Prior art keywords
described
board
overcurrent protection
power supply
protection module
Prior art date
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CN201510428063.1A
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Chinese (zh)
Inventor
邓张雷
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上海斐讯数据通信技术有限公司
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Priority to CN201510428063.1A priority Critical patent/CN105119661A/en
Publication of CN105119661A publication Critical patent/CN105119661A/en

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Abstract

The invention provides a multichannel load sharing power supply system which is applied to PON (passive optical network) local-side equipment. The multichannel load sharing power supply system comprises a power supply chip and a plurality of overcurrent protection modules, and is characterized in that the power supply chip is connected with the input ends of the plurality of overcurrent protection modules, and the output end of the overcurrent protection module are respectively connected with board cards inserted into card slots of the PON local-side equipment; the power supply chip is used for supplying power for each board card inserted into the card slot of the PON local-side equipment; the overcurrent protection modules detect loads of the board cards in real time when the power supply chip supplies power for the board cards inserted into the PON local-side equipment; the overcurrent protection module is located at a connection state when the load of the board card does not exceed an overcurrent protection point, and the power supply chip supplies power for the board card; and the overcurrent protection module is located of a disconnected state when the load of the board card exceeds the overcurrent protection point, and the power supply chip stops supplying power for the board card. The multichannel load sharing power supply system provided by the invention is free of mutual interference, and normal communication of the PON local-side equipment is ensured.

Description

A kind of multichannel loading shares electric power system

Technical field

The present invention relates to a kind of technical field of optical fiber communication, particularly relate to the multichannel loading that one is applied to PON (PassiveOpticalNetwork: passive optical-fiber network) local side apparatus and share electric power system.

Background technology

In recent years, along with the universal of Internet and the development of broadband application, the userbase of broadband access network constantly expands, Access Network bandwidth resources " are had too many difficulties to cope with " day by day, in order to thoroughly solve the bandwidth bottleneck of Access Network, fiber to the home (FiberToTheHome, FTTH) progressively enters huge numbers of families.With the passive optical network technique xPON that EPON (EthernetPassiveOpticalNetwork) and GPON (GigabitPassiveOpticalNetwork) are representative, inherit the low cost of Ethernet and the high bandwidth of ease for use and optical-fiber network, be widely used in the whole world in recent years.

At present, the local side apparatus about PON generally adopts the back plate design structure supporting hot plug, and it comprises multichannel board, and multichannel board is all the function supporting hot plug.The electric power system of PON local side apparatus is that board is powered by the power rail that backboard shares.As shown in Figure 1, for the position of each the block board on backboard, 3.3V power supply chip all opens up a path for its power supply to the electric power system of existing PON local side apparatus, and each path all correspondingly can configure a metal-oxide-semiconductor, and the structure of metal-oxide-semiconductor as shown in Figure 2.When inserting board (PON board or SFP module) in certain draw-in groove position that mainboard CPU detects on backboard, CPU sends enable signal EN to the metal-oxide-semiconductor of corresponding draw-in groove position, after metal-oxide-semiconductor receives enable signal EN, 3.3V power supply chip can be communicated with the board of insertion, thus be that the board inserted is powered.

But, metal-oxide-semiconductor on each path in the electric power system of existing PON local side apparatus does not have overcurrent protection function, any road SFP module all can cause leading portion 3.3V power supply chip to enter output short-circuit state when there is power supply short circuit, and then causes the power supply of other SFP module to go wrong.Therefore, when the board that user does not know just insertion is problematic, the board of rear insertion will cause the power rail that backboard shares to enter output short circuit protection state due to internal electric source short circuit, and so other board normally worked enters power failure state.Special on PON local side apparatus, just easily there is this event in multichannel PON board, and be also the same for those independent SFP modules, all can occur that a road has during problem and other port will be caused to occur power-down state, thus the passage affecting proper communication enters interruption.

Summary of the invention

The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of multichannel loading to share electric power system, and for solving in the PON local side apparatus of prior art, the power supply of board cannot realize non-interfering problem.

For achieving the above object and other relevant objects, the invention provides a kind of multichannel loading and share electric power system, be applied to PON local side apparatus, described multichannel loading is shared electric power system and is comprised: power supply chip and multiple overcurrent protection module; Described power supply chip is connected with the input of multiple described overcurrent protection module respectively, and the output of described overcurrent protection module is communicated with the board of the draw-in groove inserting described PON local side apparatus; Described power supply chip is powered for each the block board being respectively the draw-in groove inserting described PON local side apparatus; Described power supply chip be the board inserting described PON local side apparatus power time, described overcurrent protection module detects the load of this board in real time: when the load of this board does not exceed over-current protection point, described overcurrent protection module is in connected state, and described power supply chip is powered for this board; When the load of this board exceedes over-current protection point, described overcurrent protection module is in off-state, and described power supply chip stops powering for this board.

Alternatively, described over-current protection point is adjustable.

Alternatively, described overcurrent protection module adopts MP65151 chip; The input of described MP65151 chip is connected with the output of described power supply chip, and the output of described MP65151 chip is communicated with the board of the draw-in groove inserting described PON local side apparatus.

Alternatively, connect a resistance RILIM, for arranging described over-current protection point the ILIM pin place of described MP65151 chip.

Alternatively, described multichannel loading is shared electric power system and is also comprised the board detection module whether inserting the draw-in groove of described PON local side apparatus for detecting board; The input of described board detection module inserts the draw-in groove of described PON local side apparatus respectively board with each is connected, and output is connected with multiple described overcurrent protection module respectively.

Alternatively, when described board detection module detects that board is inserted in the draw-in groove of described PON local side apparatus, described board detection module outputs enable signal to corresponding described overcurrent protection module; Described overcurrent protection module adjusts its state according to described enable signal.

Alternatively, according to described enable signal, described overcurrent protection module is according to carrying out state adjustment as follows: when not receiving described enable signal; Described overcurrent protection module is in off-state; When receiving described enable signal, and when detecting that the load of board does not exceed over-current protection point, described overcurrent protection module is in connected state; When receiving described enable signal, and when detecting that the load of board exceedes over-current protection point, described overcurrent protection module is in off-state.

Alternatively, when the board inserted is SFP module, by the voltage detecting pin MOD_Abs, described board detection module judges whether SFP module inserts described PON local side apparatus.

Alternatively, described overcurrent protection module adopts MP65151 chip: the input of described MP65151 chip is connected with the output of described power supply chip; The output of described MP65151 chip is communicated with the board of the draw-in groove inserting described PON local side apparatus; The output of board detection module described in the enable signal input of described MP65151 connects.

As mentioned above, the multichannel loading of a kind of PON of being applied to local side apparatus of the present invention shares electric power system, by the path between power supply chip and the board of each insertion hot swappable draw-in groove arranges an overcurrent protection module, for the board inserting PON local side apparatus is powered separately; And after board inserts PON local side apparatus, detect the load of board in real time, when load exceedes over-current protection point, overcurrent protection module is in off-state, and power supply chip is no longer for this board is powered; Further, present invention also adds and detect the board detection module whether board is inserted into PON local side apparatus, the enable signal sent by board detection module controls overcurrent protection module further.Multichannel loading of the present invention is shared in electric power system, power supply chip is the over-current detection that the board inserting hot swappable draw-in groove for each carries out power supply and load separately, it can't be subject to the interference that other insert the board on PON local side apparatus, that is, once there is short circuit problem in the board inserted, then overcurrent protection module is in off-state, for the supply access of this draw-in groove disconnects, the power down of other draw-in grooves can not be caused, the board inserting other draw-in grooves still can normally use, power supply does not each other interfere with each other, ensure that the proper communication of PON local side apparatus.

Accompanying drawing explanation

Fig. 1 is shown as the electric power system structural representation of PON local side apparatus in prior art.

Fig. 2 is shown as the circuit diagram of the metal-oxide-semiconductor of the structural scheme of mechanism of the electric power system of PON local side apparatus of the prior art.

Fig. 3 is shown as the structural representation that multichannel loading disclosed in the embodiment of the present invention shares electric power system.

Fig. 4 is shown as in PON local side apparatus disclosed in the embodiment of the present invention, the connection layout of mainboard and SFP module.

Fig. 5 is shown as the pin schematic diagram of the MP65151 of the overcurrent protection module of multichannel loading electric power system disclosed in the embodiment of the present invention.

Element numbers explanation

100 multichannel loadings share electric power system

110 power supply chips

120 overcurrent protection module

130 board detection modules

200 boards

Embodiment

Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this specification can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this specification also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.It should be noted that, when not conflicting, the feature in following examples and embodiment can combine mutually.

Refer to accompanying drawing.It should be noted that, the diagram provided in following examples only illustrates basic conception of the present invention in a schematic way, then only the assembly relevant with the present invention is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.

The multichannel loading that present embodiment discloses a kind of PON of being applied to local side apparatus shares electric power system, and it is a kind of Curve guide impeller of the electric power system of existing PON local side apparatus.PON local side apparatus refers to the equipment for PON provides the local side of network insertion to provide, and more common PON local side apparatus is OLT (OpticalLineTerminal, optical line terminal).Further, because local side apparatus is for network insertion, so local side apparatus adopts back plate type design, board can carry out hot plug, thus facilitates the upgrading of local side apparatus.

As shown in Figure 3, the multichannel loading of the present embodiment is shared electric power system 100 and is comprised power supply chip 110, multiple overcurrent protection module 120 and multiple board detection module 130.

Wherein, the output of power supply chip 110 is connected with the input of overcurrent protection module 120 respectively; Board 200 on hot plug draw-in groove on the PON local side apparatus that the output of overcurrent protection module 120 is corresponding with it connects; The board 200 of the hot plug draw-in groove that the input of board detection module 130 inserts on PON local side apparatus with each is respectively connected, and output is also connected with the enable signal input of multiple overcurrent protection module 120 respectively.

In the present embodiment, share electric power system 100 due to multichannel loading and be applied to PON local side apparatus, so its power supply chip 110 adopts is the power supply chip of 3.3V.Power supply chip 110 is powered for each the block board being respectively the draw-in groove 200 inserting PON local side apparatus.

Board detection module 130 whether inserts board in the draw-in groove for detecting PON local side apparatus.When inserting board in the draw-in groove that board detection module 130 detects PON local side apparatus, board detection module 130 can send enable signal to the overcurrent protection module 120 of its correspondence.

Such as, when the board inserted is SFP module.As shown in Figure 4, when SFP module is not inserted, the voltage of the MOD_Abs pin of its correspondence draws high 3.3V by the 4.7K resistance on mainboard side (HostBoard), and exports board detection module 130 to; When SFP module is inserted, MOD_Abs pin is by SFP inside modules ground connection, and namely the voltage of MOD_Abs pin is dragged down, and like this, the signal exporting to board detection module 130 is exactly low pulse signal.Therefore, board detection module 130, when detecting that signal is low pulse signal, just judges that SFP module normally inserts PON local side apparatus; Further, enable signal is sent to corresponding overcurrent protection module 120.

Overcurrent protection module 120 is whether the load for detecting the board 200 inserting PON local side apparatus exceedes over-current protection point; draw-in groove one_to_one corresponding on itself and PON local side apparatus, the quantity of overcurrent protection module 120 is consistent with the board quantity can inserting PON local side apparatus.Overcurrent protection module 120 is when carrying out the load monitoring of board 200: if load exceedes over-current protection point, and overcurrent protection module 120 switches to off-state, and namely power supply chip 110 is not powered for this board 200; If load does not exceed over-current protection point, overcurrent protection module 120 is in connected state, and power supply chip 110 is powered for this board.Further, over-current protection point can regulate according to actual behaviour in service.

Further, overcurrent protection module 120 is also relevant with the enable signal EN that board detection module 130 exports:

When board detection module 130 detects that board is not inserted into PON local side apparatus, can't send enable signal EN to corresponding overcurrent protection module 120, this overcurrent protection module 120 is in off-state, and power supply chip 110 can not be powered for the board do not inserted;

Detect that board is inserted into PON local side apparatus at board detection module 130, and when sending enable signal EN to corresponding overcurrent protection module 120, overcurrent protection module 120 also will detect the load of board in real time: when overcurrent protection module 120 detects that board load does not exceed over-current protection point, overcurrent protection module 120 is just in connected state, and power supply chip 110 is powered for board; When overcurrent protection module 120 detects that board load exceedes over-current protection point, overcurrent protection module 120 jumps to off-state, and power supply chip 110 stops powering for board.

In the present embodiment, overcurrent protection module 120 adopts MP65151 chip, as shown in Figure 5, the output of power supply chip 110 is linked into the VIN end of MP65151 chip, the input of board detection module 130 is connected with the enable signal input EN of MP65151 chip, and the output VOUT of MP65151 chip is connected with the board inserting PON local side apparatus; Further, connect at the ILIM pin place of MP65151 chip a resistance RILIM, can arrange over-current protection point by resistance RILIM.

In addition; overcurrent protection has been a kind of technology of comparative maturity, and its implementation is also varied, is not limited to the employing MP65151 chip mentioned in the present embodiment; as long as the circuit of overcurrent protection function, chip or module can be realized, all belong to protection scope of the present invention.

It should be noted that, in order to outstanding innovative part of the present invention, the module not too close with solving technical problem relation proposed by the invention is not introduced in the present embodiment, but this not showing the module that there is not other in the present embodiment.

In sum, the multichannel loading of a kind of PON of being applied to local side apparatus of the present invention shares electric power system, by the path between power supply chip and the board of each insertion hot swappable draw-in groove arranges an overcurrent protection module, for the board inserting PON local side apparatus is powered separately; And after board inserts PON local side apparatus, detect the load of board in real time, when load exceedes over-current protection point, overcurrent protection module is in off-state, and power supply chip is no longer for this board is powered; Further, present invention also adds and detect the board detection module whether board is inserted into PON local side apparatus, the enable signal sent by board detection module controls overcurrent protection module further.Multichannel loading of the present invention is shared in electric power system, power supply chip is the over-current detection that the board inserting hot swappable draw-in groove for each carries out power supply and load separately, it can't be subject to the interference that other insert the board on PON local side apparatus, that is, once there is short circuit problem in the board inserted, then overcurrent protection module is in off-state, for the supply access of this draw-in groove disconnects, the power down of other draw-in grooves can not be caused, the board inserting other draw-in grooves still can normally use, power supply does not each other interfere with each other, ensure that the proper communication of PON local side apparatus.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.

Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.

Claims (9)

1. multichannel loading shares an electric power system, is applied to PON local side apparatus, it is characterized in that, described multichannel loading is shared electric power system and comprised: power supply chip and multiple overcurrent protection module;
Described power supply chip is connected with the input of multiple described overcurrent protection module respectively, and the output of described overcurrent protection module is communicated with the board of the draw-in groove inserting described PON local side apparatus;
Described power supply chip is powered for each the block board being respectively the draw-in groove inserting described PON local side apparatus;
Described power supply chip be the board inserting described PON local side apparatus power time, described overcurrent protection module detects the load of this board in real time: when the load of this board does not exceed over-current protection point, described overcurrent protection module is in connected state, and described power supply chip is powered for this board; When the load of this board exceedes over-current protection point, described overcurrent protection module is in off-state, and described power supply chip stops powering for this board.
2. multichannel loading according to claim 1 shares electric power system, it is characterized in that: described over-current protection point is adjustable.
3. multichannel loading according to claim 1 shares electric power system, it is characterized in that: described overcurrent protection module adopts MP65151 chip; The input of described MP65151 chip is connected with the output of described power supply chip, and the output of described MP65151 chip is communicated with the board of the draw-in groove inserting described PON local side apparatus.
4. multichannel loading according to claim 3 shares electric power system, it is characterized in that: connect a resistance R for the ILIM pin place of described MP65151 chip iLIM, for arranging described over-current protection point.
5. multichannel loading according to claim 1 shares electric power system, it is characterized in that: described multichannel loading is shared electric power system and also comprised the board detection module whether inserting the draw-in groove of described PON local side apparatus for detecting board; The input of described board detection module inserts the draw-in groove of described PON local side apparatus respectively board with each is connected, and output is connected with multiple described overcurrent protection module respectively.
6. multichannel loading according to claim 5 shares electric power system, it is characterized in that: when described board detection module detects that board is inserted in the draw-in groove of described PON local side apparatus, described board detection module outputs enable signal to corresponding described overcurrent protection module; Described overcurrent protection module adjusts its state according to described enable signal.
7. multichannel loading according to claim 6 shares electric power system, it is characterized in that: according to described enable signal, and described overcurrent protection module is according to carrying out state adjustment as follows:
When not receiving described enable signal; Described overcurrent protection module is in off-state;
When receiving described enable signal, and when detecting that the load of board does not exceed over-current protection point, described overcurrent protection module is in connected state;
When receiving described enable signal, and when detecting that the load of board exceedes over-current protection point, described overcurrent protection module is in off-state.
8. multichannel loading according to claim 5 shares electric power system, it is characterized in that: when the board inserted is SFP module, by the voltage detecting pin MOD_Abs, described board detection module judges whether SFP module inserts described PON local side apparatus.
9. multichannel loading according to claim 6 shares electric power system, it is characterized in that: described overcurrent protection module adopts MP65151 chip: the input of described MP65151 chip is connected with the output of described power supply chip; The output of described MP65151 chip is communicated with the board of the draw-in groove inserting described PON local side apparatus; The output of board detection module described in the enable signal input of described MP65151 connects.
CN201510428063.1A 2015-07-20 2015-07-20 Multichannel load sharing power supply system CN105119661A (en)

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Publication number Priority date Publication date Assignee Title
CN106411416A (en) * 2016-11-23 2017-02-15 迈普通信技术股份有限公司 Power supply device, optical module power supply system and power supply control method
CN106648013A (en) * 2016-09-28 2017-05-10 华为技术有限公司 Overcurrent point configuration method and apparatus, and overcurrent protection apparatus
CN107479679A (en) * 2017-08-02 2017-12-15 郑州云海信息技术有限公司 The power supply protection method and device of a kind of hard disk backboard
CN107562169A (en) * 2017-10-24 2018-01-09 郑州云海信息技术有限公司 A kind of overcurrent protection module and method for preventing that NVME backboards from burning

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CN107562169A (en) * 2017-10-24 2018-01-09 郑州云海信息技术有限公司 A kind of overcurrent protection module and method for preventing that NVME backboards from burning

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RJ01 Rejection of invention patent application after publication

Application publication date: 20151202

RJ01 Rejection of invention patent application after publication