CN102714547B - Branching unit, power supply path-switching method, and optical transmission system - Google Patents
Branching unit, power supply path-switching method, and optical transmission system Download PDFInfo
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- CN102714547B CN102714547B CN201180004695.5A CN201180004695A CN102714547B CN 102714547 B CN102714547 B CN 102714547B CN 201180004695 A CN201180004695 A CN 201180004695A CN 102714547 B CN102714547 B CN 102714547B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
Embodiments of the invention provide a branching unit, a power supply path-switching method, and an optical transmission system. The branching unit has a first port, a second port, a third port, and an SE port. The branching unit comprises a power supply module, a control module, and a switch module. Base on the technical solution provided by the embodiments of the invention, switches of bistable relays can be used to control switchovers of power supply paths. Therefore the power supply paths within the branching unit can be prevented form disturbance of current fluctuation and unnecessary switchovers can be prevented. Thus the power supply paths within the branching unit can stay in current status when no switchover is need, and the stability and reliability of the power supply paths is improved.
Description
Technical field
The present invention relates to optical communication field, and more specifically, relate to the branching unit in optical communication field, the method switching supply path and optical transmission system.
Background technology
In undersea optical communications system, usually, the distribution of light signal to two ports that branching unit (Branching Unit, BU) carries business can be passed through.Early stage BU does not have electrical characteristic, can only be used for being separated optical fiber and the wavelength of the business of carrying.Along with network is tending towards complicated, adding the needs in business recovery and disconnected cable maintenance etc., changing branching unit (Power Switching Branching Unit, PSBU) with the BU of electric handoff functionality and TURP becomes main flow gradually.With the BU of electric handoff functionality when there is disconnected cable, can by the switching to supply path in BU, recovered part business; When needs keep in repair disconnected cable, grounding can be carried out in disconnected cable side, to ensure the safety of maintenance personal.
Therefore, may, because disconnected cable fault or the disconnected cable failure and other reasons of maintenance, need to switch the supply path in BU.In the prior art, in order to switch supply path, need to carry out complicated power-on and power-off configuration, namely passing through the size of current that powers on of the different debarkation point of configuration, direction and order, realize the supply path reprovision between BU many ports.When needs switch supply path, by the electric current between each port of controls BU, the on off state of relay in change BU, thus realize the change of supply path.
In addition, in the prior art, because the current fluctuation flowing through BU is comparatively large, the on off state of relay in BU may be made to change, cause the reprovision of supply path in BU, had a strong impact on the normal transmission of business.
Summary of the invention
Embodiments provide branching unit, the method switching supply path and optical transmission system, supply path in BU can be avoided to be subject to the interference of current fluctuation and to cause unnecessary switching, make supply path in BU can remain on current state when not needing to switch, thus improve the stability of supply path.
On the one hand, embodiments provide a kind of branching unit, there is the first port, the second port, the 3rd port and SE port, described branching unit comprises supply module, control module and handover module, wherein: described supply module, for the heavy current of the described branching unit of input is converted to weak current, and export described weak current to described control module, described control module, for exporting the signal of telecommunication when needs configure supply path to described handover module, described handover module, comprise multiple bistable relay, wherein, at described first port, supply path in described second port and described 3rd port between any two ports comprises at least two bistable relays, supply path between described first port and described SE port comprises at least one bistable relay, supply path between described second port and described SE port comprises at least two bistable relays, supply path between described 3rd port and described SE port comprises at least two bistable relays, for each bistable relay, when the electric signal streams that described control module exports is when the coil of this bistable relay, the on off state of this bistable relay changes.
On the other hand, embodiments provide a kind of method switching supply path, comprise: receive from the first port of branching unit, one of the second port and the 3rd port the control command for configuring the supply path in described branching unit that remote control device sends, described branching unit also has SE port, described control command is converted to the signal of telecommunication, the described signal of telecommunication is inputted in the coil of the bistable relay that described supply path comprises, thus change the on off state of described bistable relay, wherein, at described first port, supply path in described second port and described 3rd port between any two ports comprises at least two bistable relays, supply path between described first port and described SE port comprises at least one bistable relay, supply path between described second port and described SE port comprises at least two bistable relays, supply path between described 3rd port and described SE port comprises at least two bistable relays.
Again on the one hand, embodiments provide a kind of optical transmission system, comprise at least one branching unit.Each branching unit has the first port, the second port, the 3rd port and SE port, each branching unit comprises supply module, control module and handover module, wherein: described supply module, for the heavy current of the described branching unit of input is converted to weak current, and export described weak current to described control module, described control module, for exporting the signal of telecommunication when needs configure supply path to described handover module, described handover module, comprise multiple bistable relay, wherein, at described first port, supply path in described second port and described 3rd port between any two ports comprises at least two bistable relays, supply path between described first port and described SE port comprises at least one bistable relay, supply path between described second port and described SE port comprises at least two bistable relays, supply path between described 3rd port and described SE port comprises at least two bistable relays, for each bistable relay, when the electric signal streams that described control module exports is when the coil of this bistable relay, the on off state of this bistable relay changes.
Based on technique scheme, by using the switching of the switch control rule supply path of bistable relay, supply path in BU is made to avoid being subject to the interference of current fluctuation and cause unnecessary switching, thus make supply path in BU can remain on current state when not needing to switch, improve stability and the reliability of supply path.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structured flowchart of the branching unit according to the embodiment of the present invention.
Fig. 2 realizes example according to the branching unit of the embodiment of the present invention.
Fig. 3 realizes example according to first of the control module of the embodiment of the present invention.
Fig. 4 realizes example according to second of the control module of the embodiment of the present invention.
Fig. 5 is the schematic diagram of supply path under different conditions according to the embodiment of the present invention.
Fig. 6 is the schematic diagram of the relay switch configuration corresponding with supply path according to the embodiment of the present invention.
Fig. 7 is the flow chart of the method for switching supply path according to the embodiment of the present invention.
Fig. 8 is the schematic diagram of the optical transmission system according to the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme of the embodiment of the present invention, obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiment.Based on the described embodiment in the present invention, the every other embodiment that those skilled in the art obtain under the prerequisite not making creative work, all should belong to the scope of protection of the invention.
First, composition graphs 1 describes the branching unit 100 according to the embodiment of the present invention.
Branching unit 100 has the first port, the second port, the 3rd port and SE(Sea Earth, ground, ocean) port.
If represent first end mouth with A port, B port represents the second port, and C port represents the 3rd port, and so can form current path between two ports in A, B and C port, a remaining port and SE port are connected to form current path.Like this, in branching unit 100, one following three kinds of supply path states are co-existed in: A port-B port, C port-SE port; B port-C port, A port-SE port; A port-C port, B port-SE port.
Branching unit 100 can comprise supply module 110, control module 120 and handover module 130.Supply module 110 can be used for the heavy current of input branching unit 100 to be converted to weak current, and exports weak current to 1 control module 120.Control module 120 can be used for exporting the signal of telecommunication when needs configuration supply path to handover module 130.Handover module 130 can comprise multiple bistable relay, wherein, at the first port, supply path in second port and the 3rd port between any two ports comprises at least two bistable relays, supply path between the first port and SE port comprises at least one bistable relay, supply path between the second port and SE port comprises at least two bistable relays, supply path between the 3rd port and SE port comprises at least two bistable relays, for each bistable relay, when the electric signal streams of control module 120 output is when the coil of this bistable relay, the on off state of this bistable relay changes.
Because cable in the needs of branching unit 100 normal running and optical communication system powers on the needs that stream transmits, heavy current will be had to be input to branching unit 100.Supply module 110, based on the heavy current being input to branching unit 100, exports weak current to control module 120, works to make control module 120.
Transmission current in the solid line of Fig. 1, transmitting optical signal in the dotted line of Fig. 1.Such as, when the supply path provided in handover module 130 is relevant with C port, the heavy current namely flowing through branching unit 100 needs to flow into from C port or flow out, and the electric current flowing through C port flows into or flows out handover module 130.
Owing to providing supply path in handover module 130, therefore supply module 110 obtains electric current from handover module 130, thus provides operating voltage for the operation of control module 120.In addition, supply module 110 can also provide safeguard function, to prevent branching unit 100 to be subject to extraneous excessive electric current impact, as described in connection with figure 2.
Control module 120 can export the signal of telecommunication under the triggering of outside control command, also can export the signal of telecommunication by self detecting the change of current delivery in branching unit 100.By the signal of telecommunication, control module 120 can control the switching of supply path in branching unit 100, carries out reprovision to supply path.
According to one embodiment of present invention, control module 120 can be used for receiving the light order that remote control device sends from the first port, one of the second port and the 3rd port, and light order being converted to the signal of telecommunication.
When needing the supply path in reprovision branching unit 100, the remote control device be positioned on the bank can send light order by the optical fiber of access branching unit 100 to branching unit 100.
Such as, the light order carrying carrying control information can be sent to the control module 120 in branching unit 100 by remote control device at specific wavelengths by optical fiber, this specific wavelength is different from the wavelength carrying service data information, thus control module 120 can distinguish bright dipping order from the light signal of Optical Fiber Transmission.
Because control module 120 needs to receive light order for configuring supply path, therefore control module 120 comprises transmission line in branching unit 100 and optical fiber.Control module 120 obtains light order from optical fiber, by carrying out opto-electronic conversion to light order, the information of the configuration supply path obtained from demodulation in light order is resolved, can obtain the signal of telecommunication controlling supply path switching, the coil of the bistable relay driving handover module 130 to comprise by the signal of telecommunication switches supply path.Mode light order being converted to the signal of telecommunication for switching supply path can realize as prior art, does not repeat them here.
Handover module 130 only just carries out the switching of supply path when receiving the signal of telecommunication that control module 120 sends.Now, when handover module 130 receives the signal of telecommunication, electric signal streams through the coil of bistable relay, thus changes the on off state of bistable relay, due to the change of on off state, causes the reprovision of supply path.
Bistable relay is the relay having two stable states, and it has two input circuits, can cause two kinds of stable states when adding input variable by regulation.For bistable relay, when having the electric current of specific direction to flow through in the coil of bistable relay, there is corresponding change in the on off state of bistable relay; When not having electric current to flow through in the coil of bistable relay, the on off state of bistable relay remains unchanged.Therefore, even if the current fluctuation flowing through branching unit 100 is larger, there is unnecessary external interference, as long as the coil of bistable relay is not exported the signal of telecommunication by driving and control module 120, the on off state of bistable relay just can remain unchanged, thus the state of supply path will remain unchanged, avoid occurring unnecessary switching.Wherein, control module 120 just can export the signal of telecommunication when receiving control command.
Such as, bistable relay can be magnetic latching relay.Normally closed or the normally open of magnetic latching relay relies on the effect of permanent-magnet steel completely, and the conversion of its on off state leans on the pulse electrical signal of one fixed width to trigger.In an embodiment of the present invention, magnetic latching relay can be dpdt double-pole double-throw (DPDT) (Double Pole Double Throw, DPDT) magnetic latching relay, the description that example carries out as shown in hereafter composition graphs 2.
According to the branching unit that the embodiment of the present invention provides, by the control making the switching of supply path be subject to the on off state of bistable relay, and just change under the control of the signal of telecommunication that the on off state of bistable relay only sends in control module, make it possible to avoid supply path in BU be subject to the interference of electric current and cause unnecessary switching, thus supply path can remain on current state when not needing to switch in BU, stability and the reliability of supply path can be improved thus.
In addition, owing to using bistable relay, supply path is made can to remain on current state when not needing switching, like this, unexpected supply path can be avoided to switch the heat produced, save the power consumption of branching unit, reduce the probability that branching unit breaks down.
Next, the object lesson of the branching unit 200 shown in composition graphs 2 describes the branching unit that the embodiment of the present invention provides in detail.
Branching unit 200 shown in Fig. 2 is the PSBU with A, B, C and SE tetra-ports, and one co-exists in following three kinds of supply path states: A port-B port, C port-SE port; B port-C port, A port-SE port; A port-C port, B port-SE port.The switching of these three kinds of supply path states has been come by configuration bistable relay 11,12,13,14.
The handover module 31 of branching unit 200 comprises bistable relay 11,12,13,14.Bistable relay 11,12,13,14 is all the high-voltage relay of DPDT, can be realized by magnetic latching relay.Each bistable relay comprises two switches and coil, bistable relay 11 comprises switch A1 and A2 and resetting coil RLR A and set coil RLS A, bistable relay 12 comprises switch B1 and B2 and resetting coil RLR B and set coil RLS B, bistable relay 13 comprises switch C1 and C2 and resetting coil RLR C and set coil RLS C, bistable relay 14 comprises switch D1 and resetting coil RLR D and set coil RLS D, and another switch of bistable relay 14 does not use in the example shown in Fig. 2.
On the supply path that bistable relay 11 to 14 can adopt mode to be as shown in Figure 2 connected between four ports.When the switch C1 of bistable relay 13 closes and the switch A1 of bistable relay 11 closes, the supply path conducting between A port and B port; When the switch C1 of bistable relay 13 closes and the B1 switch of bistable relay 12 closes, the supply path conducting between A port and C port; When the D1 switch of bistable relay 14 closes, the supply path conducting between A port and SE port; When the B2 switch of bistable relay 12 closes and the A2 switch of bistable relay 11 closes, the supply path conducting between B port and C port; When the B2 switch of bistable relay 12 closes and the C2 switch of bistable relay 13 closes, the supply path conducting between B port and SE port; When the A2 switch of bistable relay 11 closes and the C2 switch of bistable relay 13 closes, the supply path conducting between C port and SE port.
Wherein, following situation embodies the supply path state of A port-B port, C port-SE port: when the switch C1 of bistable relay 13 closes and the switch A1 of bistable relay 11 closes, the supply path conducting between A port and B port; When the A2 switch of bistable relay 11 closes and the C2 switch of bistable relay 13 closes, the supply path conducting between C port and SE port.
Following situation embodies the supply path state of B port-C port, A port-SE port: when the B2 switch of bistable relay 12 closes and the A2 switch of bistable relay 11 closes, the supply path conducting between B port and C port; When the D1 switch of bistable relay 14 closes, the supply path conducting between A port and SE port.
Following situation embodies the supply path state of A port-C port, B port-SE port: when the switch C1 of bistable relay 13 closes and the B1 switch of bistable relay 12 closes, the supply path conducting between A port and C port; When the B2 switch of bistable relay 12 closes and the C2 switch of bistable relay 13 closes, the supply path conducting between B port and SE port.
The signal of telecommunication that control module 9 sends flows in the coil of bistable relay, thus controls the on off state of bistable relay.Only have when control module 9 receives control command, control module 9 just can export the signal of telecommunication, drives the coil of bistable relay 11 to 14, thus the on off state of bistable relay 11 to 14 is changed, like this, can realize between three normal operating conditionss of supply path switching.The order that control module 9 receives can from the light order of external world's input or electricity order, the order that also can send from inside.
Set coil RLS A to the RLS D of each bistable relay is controlled by the first control unit 91 in control module 9, and resetting coil RLR A to the RLR D of each bistable relay is controlled by the second control unit 92 in control module 9.
First control unit 91 and the second control unit 92 can control the on off state of bistable relay by the electric current of control flow check in corresponding coil.According to embodiments of the invention, first control unit 91 and the second control unit 92 are when needing the on off state configuring bistable relay at every turn, one of them is only had to carry out work, like this, first control unit 91 and the second control unit 92 can back up mutually, increase the reliability of control module 9.
First control unit 91 can be used for receiving from the first port, one of the second port and the 3rd port the light order that remote control device sends; Light order is converted to the signal of telecommunication; The signal of telecommunication is outputted in the set coil of bistable relay.Second controls single 92 can be used for receiving from the first port, one of the second port and the 3rd port the light order that remote control device sends; Light order is converted to the signal of telecommunication; The signal of telecommunication is outputted in the resetting coil of bistable relay.
By the switching utilizing light order to control supply path, configure compared to the power-on and power-off of complexity, realize easy.
The specific implementation of the first control unit 91 and the second control unit 92 can with reference to the example shown in Fig. 3 and Fig. 4.First composition graphs 3 describes the first example of the specific implementation when control module 9 comprises the first control unit 91 and the second control unit 92.
First control module 91 can comprise optical-electrical converter 911 and optical filter 912,913,914.Although figure 3 illustrates three optical filters, but the first control module 91 also can only have an optical filter, can also have two or optical filter more than three, this can depend on input light order from which root optical fiber, in the optical fiber having light order to input, install optical filter.Each optical filter can be the filter comprising light-splitting device, is leached by the light carrying command information by light-splitting device.Each optical filter can extract the light order for configuring supply path from corresponding optical fiber, such as, light order can be carried in the light signal with specific wavelength and transmit.
Optical filter 912 receives light order from optical fiber 1, optical filter 913 also receives light order from optical fiber 1, but optical filter 912 is operated in light signal when from left to right transmitting, and optical filter 913 is operated in light signal when transmitting from right to left, therefore, based on the difference of optical transmission direction in optical fiber, one of optical filter 912 and optical filter 913 carry out filtering operation.Optical filter 914 receives light order from optical fiber 3.Optical fiber 1 and optical fiber 3 can be the optical fiber from the port access branching unit 200 of except SE port, also can be the optical fiber accessing branching unit 200 from the port of two except SE port respectively.
The light order extracted, from after extract bright dipping order along the light signal of Optical Fiber Transmission, is outputted to optical-electrical converter 911 by optical filter 912,913 or 914.Optical-electrical converter 911 can carry out opto-electronic conversion to light order, solution harmonic analysis is carried out to light order, like this, light order can be converted to the signal of telecommunication, and sent in the set coil of bistable relay by the signal of telecommunication, thus the on off state i.e. closed and off-state of bistable relay can be controlled.
Second control module 92 can comprise optical-electrical converter 921 and optical filter 922,923,924.Although figure 3 illustrates three optical filters, but the second control module 92 also can only have an optical filter, can also have two or optical filter more than three, this can depend on input light order from which root optical fiber, in the optical fiber having light order to input, install optical filter.Each optical filter can be the filter comprising light-splitting device, is leached by the light carrying command information by light-splitting device.Each optical filter can extract the light order for configuring supply path from corresponding optical fiber, such as, light order can be carried in the light signal with specific wavelength and transmit.
Optical filter 922 receives light order from optical fiber 2, optical filter 923 also receives light order from optical fiber 2, but optical filter 922 is operated in light signal when from left to right transmitting, and optical filter 923 is operated in light signal when transmitting from right to left, therefore, based on the difference of optical transmission direction in optical fiber, one of optical filter 922 and optical filter 923 carry out filtering operation.Optical filter 924 receives light order from optical fiber 4.Optical fiber 2 and optical fiber 4 can be the optical fiber from the port access branching unit 200 of except SE port, also can be the optical fiber accessing branching unit 200 from the port of two except SE port respectively.
The light order extracted, from after extract bright dipping order along the light signal of Optical Fiber Transmission, is outputted to optical-electrical converter 921 by optical filter 922,923 or 924.Optical-electrical converter 921 can carry out opto-electronic conversion to light order, solution harmonic analysis is carried out to light order, like this, light order can be converted to the signal of telecommunication, and sent in the resetting coil of bistable relay by the signal of telecommunication, thus the on off state i.e. closed and end open state of bistable relay can be controlled.
As seen from Figure 3, the path that first control unit 91 receives light order with the second control unit 92 is separated completely, therefore the first control unit 91 and the second control unit 92 can not receive light order simultaneously, will electric current be had to flow through in set coil and resetting coil simultaneously, achieve the backup of controlling functions in control module 9.
Next, composition graphs 4 describes the second example of the specific implementation when control module 9 comprises the first control unit 91 and the second control unit 92.The difference of second example and the first example is, the first control unit 91 and the second control unit 92 receive the paths merge of light order, needs the mark by carrying the first control unit 91 or the second control unit 92 in light order to distinguish and by whom is operated.
In second example, the first control unit 91 comprises optical filter 931,932,933 and optical coupler 934,935,936 and optical-electrical converter 918.Second control unit 92 comprises optical filter 931,932,933 and optical coupler 934,935,936 and optical-electrical converter 928, wherein optical filter and optical coupler one_to_one corresponding.As seen from Figure 4, the first control unit 91 and the second control unit 92 share identical optical filter and optical coupler, but use different optical-electrical converters.Although figure 4 illustrates three pairs of optical filters and optical coupler, but control module 9 also can only have a pair optical filter and optical coupler, multipair optical filter and optical coupler can also be had, this can depend on input light order from which root optical fiber, installs optical filter and corresponding optical coupler in the optical fiber having light order to input.Each optical filter can be the filter comprising light-splitting device, is leached by the light carrying command information by light-splitting device.
Each in optical coupler 934,935 and 936 can be the coupler of 3dB, and the light containing light order leached by corresponding light filter such as to be divided at the two parts of luminous power, outputs to respectively in optical-electrical converter 918 and 928.Still can be worked by optical-electrical converter 928 by optical-electrical converter 918 by arranging mark to specify in light order.The mark arranged in light order can be the mark of the first control unit 91 or the second control unit 92, also can be the mark of optical-electrical converter 918 or optical-electrical converter 928.According to mark, optical-electrical converter 918 and optical-electrical converter 928, by resolving light order, can determine whether oneself works.
The optical-electrical converter 918 of the first control unit 91 can be used for light order to be converted to the signal of telecommunication, is outputted in the set coil of bistable relay by the signal of telecommunication.The optical-electrical converter 928 of the second control unit 92 can be used for light order to be converted to the signal of telecommunication, is outputted in the resetting coil of bistable relay by the signal of telecommunication.
Action message and the order of bistable relay is comprised, as the operation needed for the switching supply path of composition graphs 6 description below in the light order that above-mentioned optical-electrical converter 911,912,918 or 928 receives.Optical-electrical converter can carry out demodulation to light order, demodulating information is given the resolver comprised in optical-electrical converter to resolve, thus parse the action message of bistable relay, by producing in the coil of signal of telecommunication input bistable relay of corresponding actions, bistable relay is driven to complete predetermined action.
Described above is two object lessons of control module 9, return other parts that Fig. 2 continues to describe branching unit 200 below.
The supply module 32 of branching unit 200 comprises the monostable relay that transient state suppression component 1, resistance 2, rectification circuit 3, diode 4,5,6 and coil 7 and switch 8 form DPDT.
Because branching unit is generally used for long haul transmission system, and direct current long haul transmission system often adopts single-ended power mode, and the power supply of branching unit is usually operated among the circuit of constant current.Due to system power usually up to several thousand to volt up to ten thousand, short circuit unexpected near branching unit 200 may cause larger surge current to produce, thus may affect greatly the normal work of branching unit 200.For this reason, as shown in Figure 2, transient state suppression component 1 and resistance 2 is provided with as protection circuit.
Transient state suppression component 1 can be air discharge tube, Transient Voltage Suppressor (Transient VoltageSuppressor, TVS) etc., is used for absorbing energy when surge produces, and avoids surge to enter internal circuit Damage Coutrol module 9.Resistance 2 can also be inductance coil, can increase the transient impedance of the part in parallel with transient state suppression component 1, thus allows protection circuit absorb surge.
Rectification circuit 3 can be made up of diode, and the existence of rectification circuit 3 can make branching unit 200 support the power supply in forward or negative sense two direction.
Diode 4,5,6 is voltage stabilizing didoe, can provide stable voltage for control module 9, set coil, resetting coil.Voltage stabilizing didoe 4 provides the power supply from B port to input, voltage stabilizing didoe 5 provides the power supply from C port to input, voltage stabilizing didoe 6 is in parallel with control module 9, and the first control unit 91 that control module 9 comprises and the second control unit 92 drive set coil and the resetting coil of bistable relay respectively.
Coil 7 and switch 8 form the monostable relay of DPDT, and this relay is high-voltage relay, and its control coil 7 is in parallel with voltage stabilizing didoe 4.When B port has electric current to input, coil 7 obtains electric, and switch 8 is operated in closure state, namely the COM end of relay is held with NO and is connected, voltage stabilizing didoe 6 is in parallel with control module 9, is powered to control module 9 by B port, and control module 9 drives set coil or the resetting coil of bistable relay.When B port does not have electric current to pass through, coil 7 dead electricity of monostable relay, the switch 8 that continues is operated in off-state, namely the COM end of relay is held with NC and is connected, now voltage stabilizing didoe 6, control module 9 are in parallel with voltage stabilizing didoe 5, powered to control module 9 by A port, supply module 9 drives set coil or the resetting coil of bistable relay.
Next, three kinds of supply path states of the branching unit 200 shown in Fig. 2 are described with reference to figure 5.
As shown in the (a) and (b) in Fig. 5 He (c), the supply path state in (a) is A port-B port, C port-SE port; B the supply path state in () is A port-SE port, B port-C port; C the supply path state in () is A port-C port, B port-SE port.
When switching between three kinds of states, first need to be switched to (d), in (d), A port, B port are all connected with SE port with C port, and then are switched to dbjective state.Such as, when supply path state is switched to (c) from (a) by needs, then first supply path state is switched to (d) from (a), then is switched to (c) from (d).
In figure 6, the relay switch configuration under three kinds of supply path states has been shown respectively in (a) and (b) and (c).Wherein, the supply path that (a) is corresponding is A port-B port and C port-SE port; B the supply path of () correspondence is A port-SE port and B port-C port; C the supply path of () correspondence is A port-C port and B port-SE port.
When the state in (a) being switched to the state in (c), first the B1 switch of closed bistable relay 12 and B2 switch, enter the state of three end ground connection, i.e. state in (d) of Fig. 5.Disconnect A1 switch and the A2 switch of bistable relay 11 again, namely enter the state in (c).
When the state in (a) being switched to the state in (b), first close B1 switch and the B2 switch of bistable relay 12, then the D1 switch of closed bistable relay 14, enter the state of three end ground connection.Then, disconnect C1 switch and the C2 switch of bistable relay 13, namely enter the state in (b).
When the state in (b) being switched to the state in (c), first closing C1 switch and the C2 switch of bistable relay 13, entering the state of three end ground connection.Then, disconnect the D1 switch of bistable relay 14, then disconnect A1 switch and the A2 switch of bistable relay 11, namely enter the state in (c).
When the state in (b) being switched to the state in (a), first closing C1 switch and the C2 switch of bistable relay 13, entering the state of three end ground connection.Then, disconnect the D1 switch of bistable relay 14, then disconnect B1 switch and the B2 switch of bistable relay 12, namely enter the state in (a).
When the state in (c) being switched to the state in (a), the A1 switch of closed bistable relay 11 and A2 switch, enter the state of three end ground connection.Then, disconnect B1 switch and the B2 switch of bistable relay 12, namely enter the state in (a).
When the state in (c) being switched to the state in (b), the A1 switch of closed bistable relay 11 and A2 switch, enter the state of three end ground connection.Then, the D1 switch of closed bistable relay 14, then disconnect C1 switch and the C2 switch of bistable relay 13, namely enter the state in (b).
The inside specific implementation of the branching unit 200 shown in Fig. 2 is just according to an example of inventive concept of the present invention, and those skilled in the art, under the instruction of this specification, it will also be appreciated that other realize the example of branching unit.In the branching unit that the embodiment of the present invention provides, by the control making the switching of supply path be subject to the on off state of bistable relay, and just change under the control of the signal of telecommunication that the on off state of bistable relay only sends in control module, make it possible to avoid supply path in BU be subject to the interference of electric current and cause unnecessary switching, thus supply path can remain on current state when not needing to switch in BU, stability and the reliability of supply path can be improved.
Next, composition graphs 7 describes the method 700 of the switching supply path according to the embodiment of the present invention.
As shown in Figure 7, method 700 comprises: in S710, and receive from the first port of branching unit, one of the second port and the 3rd port the control command for configuring the supply path in branching unit that remote control device sends, branching unit also has SE port, in S720, control command is converted to the signal of telecommunication, in S730, the signal of telecommunication is inputted in the coil of the bistable relay that supply path comprises, thus change the on off state of bistable relay, wherein, at the first port, supply path in second port and the 3rd port between any two ports comprises at least two bistable relays, supply path between the first port and SE port comprises at least one bistable relay, supply path between the second port and SE port comprises at least two bistable relays, supply path between the 3rd port and SE port comprises at least two bistable relays.
Such as, method 700 can be performed by the control module 120 in branching unit 100.The control command that control module 120 can send from optical fiber or cable reception remote control equipment on the bank, action message and the order of bistable relay is included in control command, the on off state of bistable relay can be made to perform corresponding action by control command being converted to the signal of telecommunication, thus realize the switching of supply path.
According to one embodiment of present invention, control command can be light order.Sending to branching unit to switch supply path by light order being carried on predetermined wavelength, switching supply path compared to the power-on and power-off configuration by complexity, realizing easy.
The concrete operations of control module 120 with reference to specific descriptions above, in order to avoid repeating, can not repeat them here.
According to the method for the switching supply path that the embodiment of the present invention provides, by sending to branching unit the on off state that control command controls bistable relay, and the on off state of bistable relay only changes under the control of the signal of telecommunication based on control command, thus supply path in BU can be avoided to be subject to the interference of electric current and to cause unnecessary switching, like this, in BU, supply path can remain on current state when not needing to switch, and improves stability and the reliability of supply path.
Next, with reference to figure 8, the optical transmission system 800 according to the embodiment of the present invention is described.
Optical transmission system 800 is for communicating optical signals.At least one branching unit is comprised at optical transmission system 800.Figure 8 illustrates three branching units, but this just schematically, is not construed as limiting the concrete number of the branching unit that optical transmission system 800 comprises.
The branching unit that optical transmission system 800 comprises can be the branching unit 100 shown in Fig. 1.The specific implementation of branching unit 100 can as shown in Figure 2, and the specific implementation of the control module in branching unit can be as shown in Figure 3 or Figure 4.
According to the optical transmission system that the embodiment of the present invention provides, by using the switching of the switch control rule supply path of bistable relay, supply path in BU is made to avoid being subject to the interference of current fluctuation and cause unnecessary switching, thus make supply path in BU can remain on current state when not needing to switch, improve stability and the reliability of supply path.
Those skilled in the art can recognize, in conjunction with the various method steps described in embodiment disclosed herein and unit, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe step and the composition of each embodiment in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Those skilled in the art can make differently to realize described function to each specific application, but this realization should not thought and exceeds scope of the present invention.
The method step described in conjunction with embodiment disclosed herein can be implemented with the software program of hardware, processor execution or the combination of the two.Software program can be placed in the storage medium of other form any known in random-access memory (ram), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Although illustrate and describe some embodiments of the present invention, it should be appreciated by those skilled in the art that without departing from the principles of the present invention, can carry out various amendment to these embodiments, such amendment should fall within the scope of the present invention.
Claims (12)
1. a branching unit, have the first port, the second port, the 3rd port and SE port, it is characterized in that, described branching unit comprises supply module, control module and handover module, wherein:
Described supply module, for the heavy current of the described branching unit of input is converted to weak current, and exports described weak current to described control module;
Described control module, for exporting the signal of telecommunication when needs configure supply path to described handover module;
Described handover module, comprise multiple bistable relay, wherein, at described first port, supply path in described second port and described 3rd port between any two ports comprises at least two bistable relays, supply path between described first port and described SE port comprises at least one bistable relay, supply path between described second port and described SE port comprises at least two bistable relays, supply path between described 3rd port and described SE port comprises at least two bistable relays, for each bistable relay, when the electric signal streams that described control module exports is when the coil of this bistable relay, the on off state of this bistable relay changes.
2. branching unit according to claim 1, is characterized in that, described handover module comprises the first bistable relay and the 3rd bistable relay, wherein:
Supply path between described first port and described second port comprises described 3rd bistable relay and described first bistable relay, when the first switch of described 3rd bistable relay closes and the first switch of described first bistable relay closes, this supply path conducting;
Supply path between described 3rd port and described SE port comprises described first bistable relay and described 3rd bistable relay, when the second switch of described first bistable relay closes and the second switch of described 3rd bistable relay closes, this supply path conducting.
3. branching unit according to claim 2, is characterized in that, described handover module also comprises the second bistable relay and the 4th bistable relay, wherein:
Supply path between described second port and described 3rd port comprises described second bistable relay and described first bistable relay, when the second switch of described second bistable relay closes and the second switch of described first bistable relay closes, this supply path conducting;
Supply path between described first port and described SE port comprises described 4th bistable relay, when the first switch of described 4th bistable relay closes, and this supply path conducting.
4. branching unit according to claim 3, is characterized in that,
Supply path between described first port and described 3rd port comprises described 3rd bistable relay and described second bistable relay, when the first switch of described 3rd bistable relay closes and the first switch of described second bistable relay closes, this supply path conducting;
Supply path between described second port and described SE port comprises described second bistable relay and described 3rd bistable relay, when the second switch of described second bistable relay closes and the second switch of described 3rd bistable relay closes, this supply path conducting.
5. branching unit according to claim 1, it is characterized in that, described control module is also for receiving the light signal that remote control device sends from described first port, one of described second port and described 3rd port, and described light signal is converted to the described signal of telecommunication.
6. branching unit according to claim 5, is characterized in that, described control module comprises the first control unit and the second control unit, wherein:
Described first control unit, for receiving from described first port, one of described second port and described 3rd port the light signal that described remote control device sends; Described light signal is converted to the described signal of telecommunication; The described signal of telecommunication is outputted in the set coil of described bistable relay;
Described second control unit, for receiving from described first port, one of described second port and described 3rd port the light signal that described remote control device sends; Described light signal is converted to the described signal of telecommunication; The described signal of telecommunication is outputted in the resetting coil of described bistable relay.
7. branching unit according to claim 6, is characterized in that, described first control unit comprises the first optical filter and the first optical-electrical converter, and described second control unit comprises the second optical filter and the second optical-electrical converter, wherein:
Described first optical filter, for extracting described light signal in the light signal from described first port, the input of one of described second port and described 3rd port, and exports described light signal to described first optical-electrical converter;
Described first optical-electrical converter, for described light signal is converted to the described signal of telecommunication, and outputs in the set coil of described bistable relay by the described signal of telecommunication;
Described second optical filter, for extracting described light signal in the light signal from described first port, the input of one of described second port and described 3rd port, and exports described light signal to described second optical-electrical converter;
Described second optical-electrical converter, for described light signal is converted to the described signal of telecommunication, and outputs to the described signal of telecommunication in the resetting coil of described bistable relay.
8. branching unit according to claim 6, is characterized in that, described first control unit and described second control unit comprise identical optical filter and optical coupler and different optical-electrical converters, wherein:
Described optical filter, for extracting described light signal in the light signal from described first port, the input of one of described second port and described 3rd port, and exports described light signal to described optical coupler;
Described optical coupler, for the optical-electrical converter of the optical-electrical converter and described second control unit that described light signal are outputted to respectively described first control unit;
The optical-electrical converter of described first control unit, for described light signal is converted to the described signal of telecommunication, outputs in the set coil of described bistable relay by the described signal of telecommunication;
The optical-electrical converter of described second control unit, for described light signal is converted to the described signal of telecommunication, outputs to the described signal of telecommunication in the resetting coil of described bistable relay.
9. branching unit according to claim 8, is characterized in that, the optical-electrical converter that the carrying out based on described light order instruction operates, and one of the optical-electrical converter of described first control unit and the optical-electrical converter of described second control unit operate.
10. branching unit according to claim 1, is characterized in that, described supply module comprises monostable relay, and described monostable relay all makes described weak current be input to described control module under different on off state.
11. 1 kinds of methods switching supply path, is characterized in that, comprising:
Receive from the first port of branching unit, one of the second port and the 3rd port the control command for configuring the supply path in described branching unit that remote control device sends, described branching unit also has SE port;
Described control command is converted to the signal of telecommunication;
The described signal of telecommunication is inputted in the coil of the bistable relay that described supply path comprises, thus change the on off state of described bistable relay, wherein, at described first port, supply path in described second port and described 3rd port between any two ports comprises at least two bistable relays, supply path between described first port and described SE port comprises at least one bistable relay, supply path between described second port and described SE port comprises at least two bistable relays, supply path between described 3rd port and described SE port comprises at least two bistable relays.
12. 1 kinds of optical transmission systems, is characterized in that, comprising:
At least one branching unit according to any one of claim 1 to 10.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/077064 WO2013007017A1 (en) | 2011-07-12 | 2011-07-12 | Branching unit, method for switching power supply route, and optical transmission system |
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| Publication Number | Publication Date |
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| CN102714547A CN102714547A (en) | 2012-10-03 |
| CN102714547B true CN102714547B (en) | 2015-04-08 |
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| WO (1) | WO2013007017A1 (en) |
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| US9755734B1 (en) * | 2016-06-09 | 2017-09-05 | Google Inc. | Subsea optical communication network |
| WO2019065385A1 (en) * | 2017-09-29 | 2019-04-04 | 日本電気株式会社 | Submarine branching unit and submarine branching method |
| CN115296727A (en) * | 2022-07-06 | 2022-11-04 | 中航宝胜海洋工程电缆有限公司 | Reliable remote control's branching unit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170143A (en) * | 1996-07-09 | 1998-01-14 | 富士通株式会社 | Light branching and insertion apparatus and optical transmission system having light branching and insertion apparatus |
| GB2287625B (en) * | 1994-03-05 | 1999-05-12 | Stc Submarine Systems Ltd | Underwater Optical Communication System |
| CN101957476A (en) * | 2009-07-21 | 2011-01-26 | 华为海洋网络有限公司 | Underwater optical splitter of optical add drop multiplexer and corresponding optical transmission method and system thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9722560D0 (en) * | 1997-10-24 | 1997-12-24 | Alsthom Cge Alcatel | A branching unit for an underwater communications system |
| US6934442B2 (en) * | 2003-10-16 | 2005-08-23 | Red Sky Systems, Inc. | Undersea branching unit for an undersea optical transmission system |
-
2011
- 2011-07-12 CN CN201180004695.5A patent/CN102714547B/en active Active
- 2011-07-12 WO PCT/CN2011/077064 patent/WO2013007017A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2287625B (en) * | 1994-03-05 | 1999-05-12 | Stc Submarine Systems Ltd | Underwater Optical Communication System |
| CN1170143A (en) * | 1996-07-09 | 1998-01-14 | 富士通株式会社 | Light branching and insertion apparatus and optical transmission system having light branching and insertion apparatus |
| CN101957476A (en) * | 2009-07-21 | 2011-01-26 | 华为海洋网络有限公司 | Underwater optical splitter of optical add drop multiplexer and corresponding optical transmission method and system thereof |
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| WO2013007017A1 (en) | 2013-01-17 |
| CN102714547A (en) | 2012-10-03 |
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