CN206472148U - A kind of physical layer multicast Optical Switch Node device and network that can be integrated on piece - Google Patents
A kind of physical layer multicast Optical Switch Node device and network that can be integrated on piece Download PDFInfo
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- CN206472148U CN206472148U CN201720212656.9U CN201720212656U CN206472148U CN 206472148 U CN206472148 U CN 206472148U CN 201720212656 U CN201720212656 U CN 201720212656U CN 206472148 U CN206472148 U CN 206472148U
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Abstract
A kind of physical layer multicast Optical Switch Node device and network that can be integrated on piece, passive light distribute module is constituted by 3 groups of photo-couplers, multiple passive light distribute modules constitute Optical Switch Node device with respective array waveguide optical grating, and some Optical Switch Node devices connect and compose tree network with gateway device.The network is dispatched by gateway device, without opto-electronic conversion in Optical Switch Node device, you can carry out the physical layer multicast of optical data stream.The utility model reduces node time delay without using " storage is forwarded " mechanism in existing switch, and realizes data exchange by full light passive structures, and reliability is high, low in energy consumption, is particularly suitable for use in industrial control network.In the utility model, it is each between that same passive light distribute module is connected, and can directly carry out data interaction, can further reduce the end-to-end time delay of data message.The utility model can realize single-chip integration by planar lightwave circuit process technique, and compared with discrete device constructing system, reliability is higher.
Description
Technical field
The utility model is related to optical communication field, more particularly to a kind of multicast Optical Switch Node device that can be integrated on piece.
Background technology
Existing Data Interchange Technology generally uses " storage-forwarding " mechanism, real by the electric interchanger of traditional Ethernet
Existing data exchange., it is necessary to decoding, verifying by complete reception, caching, tabling look-up, forwarding, encoding the processes such as transmission during exchange,
Also need to carry out optical-electronic, electrical-optical conversion according to optical transport.In the mechanism, data forwarding need to be by caching, and message length is with handing over
Linear speed of changing planes determines the lower limit of telephone net node time delay.Meanwhile, when needing processing larger flow data, machine utilization amount
Greatly, thus it can produce that caloric value is big, power consumption is higher, the problems such as rear stability that works long hours is reduced.
To avoid proposing entirely during the time delay that optical-electronic, electrical-optical conversion are brought, academia's research all optical networks
Light Packet Switch Node, usually, the structure design of All-optical switching node are still based on the light packet of " storage-forwarding " mechanism
Switching node structure or its improvement.But because random Optical buffer realizes there is high difficulty, all-optical packet switching node is set
Think also to be not implemented commercial always.So, limited by " storage-forwarding " mechanism, have no the All-optical switching node of cost effective
Structure effectively to reduce the time delay and power consumption for receiving and decoding, verify, caching, tabling look-up, forwarding, encoding the processes such as transmission and bring.
Optical distribution network (ODN, optical distribution network) in EPON, in line side connection
Optical line terminal (OLT, optical line terminal), in end side connecting optical network unit (ONU, Optical
Network Unit), the communication between 1 OLT device and multiple ONU is realized by Optical Distribution Network (ODN).But existing light
The direct physical layer that distribution net (ODN) can not be provided between data acquisition equipment and control protection equipment is connected, the data of its two side
Interaction must be forwarded by OLT device.If directly the huge waste of OLT Gbps can be caused using existing ODN structures.For
The characteristics of industrial control network, a kind of device that the exchange of multicast light is realized in physical layer is needed at present, is set with providing data acquisition
Direct physical layer between the standby protection equipment with control is connected.To be suitable for linking up " data acquisition equipment-control protection equipment-remote
Hold convergence device (high in the clouds) " tripartite, while delay is reduced, the device there is a need for being able to coordinate the scheduling of gateway device, and
The reliability of Optical Switch Node device transmission can be ensured.
Utility model content
In order to solve the deficiency of prior art presence, the purpose of this utility model is to provide a kind of thing that can be integrated on piece
Manage layer multicast Optical Switch Node device and network.
First, to achieve the above object, a kind of passive light distribute module, including at least three photo-coupler are proposed, it is described every
One photo-coupler includes a combining end and at least two branch end, it is characterised in that the branch of 3 photo-couplers
End is interconnected to form three port loop configuration, and the combining end of 3 photo-couplers respectively constitutes three port ring junction
3 ports of structure；
The combining end of first photo-coupler for forming three port loop configuration connects described by input interface unit
The input port of passive light distribute module；
The combining end of second photo-coupler for forming three port loop configuration connects described by output interface unit
The output port of passive light distribute module；
The combining end of the 3rd photo-coupler for forming three port loop configuration connects the passive light distribute module
Converge port.
The branch end of 3 photo-couplers be mutually connected for：The first branch end connection of first photo-coupler
First branch end of the second photo-coupler, the second branch end of the first photo-coupler connects the first branch of the 3rd photo-coupler
End, the second branch end of the second photo-coupler connects the second branch end of the 3rd photo-coupler, 3 splitter/couplers
Three combining ends separately constitute 3 ports of 3 port loop configuration.
Further, in above-mentioned passive light distribute module, 3 photo-couplers of the described port loop configuration of formation three are
1 × 2 photo-coupler.
Meanwhile, in above-mentioned passive light distribute module, the input port number of described passive light distribute module is q, described
Input interface unit is 1 × q photo-coupler, and the combining end of 1 × q photo-couplers connects first photo-coupler
Combining end, q branch end of 1 × q photo-couplers is sequentially connected q input port of the passive light distribute module.
And the output port number of the passive light distribute module is t, the output interface unit is 1 × t optocoupler
Clutch, the combining end of 1 × t photo-couplers connects the combining end of second photo-coupler, the t of 1 × t photo-couplers
Individual branch end is sequentially connected t output port of the passive light distribute module.
Based on above-mentioned passive light distribute module, the utility model also provides a kind of physical layer multicast Optical Switch Node dress simultaneously
Put, including array waveguide grating (AWG, Arrayed Waveguide Grating) and at least one passive light as described above
Distribute module (PODM, Passive Optical Distribution Module), the passive light distribute module described in each
(PODM) convergence port is connected with a partial wave port of the array waveguide grating (AWG) successively.The passive light distribution
Each input port of module (PODM) is sequentially connected each input interface of the Optical Switch Node device, and the passive light distributes mould
Each output port of block (PODM) is sequentially connected each output interface of the Optical Switch Node device, the array waveguide grating
(AWG) multiplex port connects the convergence interface of the Optical Switch Node device.
Further, in above-mentioned physical layer multicast Optical Switch Node device, the operation wavelength of each passive light distribute module
Match (operating wave appearance with the operation wavelength of its partial wave port for converging the array waveguide grating (AWG) that port is connected
Together).
Meanwhile, in above-mentioned physical layer multicast Optical Switch Node device, each passive light distribute module and Waveguide array light
Grid (AWG) are realized integrated on piece by planar lightwave circuit (PLC, Planar Lightwave Circuits) process technique.
Further, based on above-mentioned physical layer multicast Optical Switch Node device, the utility model also proposes a kind of physics simultaneously
Layer multicast optical switching network, it is characterised in that including sensing with performing equipment, protection and control device, gateway device and such as
Upper described Optical Switch Node device.Gateway device is according to the data of its latter linked server, light conversion described in integrated dispatch
Each terminal device of device and its connection：
The sensing is connected with performing equipment with the input interface of the Optical Switch Node device, for gathering sensing data
Or perform control instruction；
The protection is connected with control device with the output interface of the Optical Switch Node device, for receiving the sensing
Data send the control instruction；
The gateway device is connected with the convergence interface of the Optical Switch Node device, for dispatching the sensing with performing
Equipment and the protection and control device, while realizing the sensing and performing equipment or the protection and control device and outer
Portion's network data exchange；
The Optical Switch Node device is used for scheduling according to the gateway device, realize the sensing with perform equipment,
Data interaction between protection and control device and gateway device, three.
Further, in above-mentioned physical layer multicast optical switching network, each passive light in the Optical Switch Node device
The operation wavelength of distribute module is different, the operation wavelength of each passive light distribute module and the passive light distribute module institute
The operation wavelength of the partial wave port of the array waveguide grating (AWG) of connection matches (wavelength is identical), and the sensing is set with execution
Standby operation wavelength and the sensing match (wavelength phase with performing the operation wavelength for the passive light distribute module that equipment is connected
Together), the work for the passive light distribute module that the protection is connected with the operation wavelength of control device with the protection with control device
Match (wavelength is identical) as wavelength.
Thus, under this configuration, in the physical layer multicast optical switching network, the sensing that is mutually related is with performing equipment
Preferably it is connected with protection with control device with same passive light distribute module and (senses and be connected to the passive light point with performing equipment
Input port with module, protection is connected to the output port of the passive light distribute module with control device).Can so use up can
Gateway device can be reduced and participate in the frequency that data interaction is realized in scheduling, and then further reduce node time delay.
The applicable communication means of the network includes two steps, time slot distribution and data interaction.Comprise the following steps that：
Time slot is distributed：The gateway device is in the initial phase of the optical switching network or in the optical switching network
It is the sensing of each in the optical switching network with performing equipment and each protection and control device distribution during without downlink data
Separate time slots, and notify all sensings with performing equipment and all protections and control device, each described biography by control frame
Sense only sends data with performing equipment and each described protection and control device in the time slot that it is assigned to；
Data interaction：Four kinds of data interactive methods are divided into according to data flow difference：
The first data flow is the guarantor with performing equipment and being connected to same passive light distribute module by the sensing
Data interaction is carried out between shield and control device：Source network terminal therein sends datagram in this terminal sending time slots,
The data message carries out physical layer multicast via the passive light distribute module that is connected with the source network terminal, most the number at last
The purpose network terminal is transferred to according to message；
Second of data flow is the protection from performing equipment and being connected to different passive light distribute modules by the sensing
Data interaction is carried out between control device：Source network terminal therein sends datagram in this terminal sending time slots, institute
State data message and carry out physical layer multicast via the passive light distribute module being connected with the source network terminal, then by the multicast number
Gateway device is sent into according to via the convergence interface of the Optical Switch Node device, selects whole with purpose network by the gateway device
The wavelength matched is held, the multicast packet is forwarded to purpose network terminal institute by the convergence interface of Optical Switch Node device
The passive light distribute module of connection carries out second of physical layer multicast, and most the data message transfers to purpose network end at last
End；
The third data flow is to be set by the sensing with performing equipment or the protection with control device with the gateway
Server after standby carries out data interaction：Source network terminal therein sends datagram in this terminal sending time slots, described
Data message carries out physical layer multicast via the passive light distribute module being connected with the source network terminal, and the data message is turned
The gateway device is delivered to, is sent by the gateway device to the server；
4th kind of data flow is to issue data to the sensing with performing equipment by the server after the gateway device
Or the protection and control device：The server sends the data to the gateway device, and the gateway device is selected
The wavelength matched with the purpose network terminal, forwards the data on the passive light connected to the purpose network terminal and distributes mould
Block carries out physical layer multicast, and most the data deliver to the purpose network terminal at last.
Beneficial effect
1. 3 groups of photo-couplers are combined as passive light distribute module by the utility model, by n passive light distribute module and 1
Individual 1 × n array waveguide optical grating (AWG) constitutes passive Optical Switch Node device, by some Optical Switch Node devices and gateway device
Connection may make up tree network, is scheduled by pool side gateway device, realizes optical data stream physical layer multicast.It is different from existing
There are the electric interchanger of use " storage-forwarding " mechanism, passive Optical Switch Node device forwarding data provided by the utility model
When, without carry out reception decoding, verify, cache, table look-up, forward, encode transmission, optical-electronic conversion, electrical-optical conversion etc. process, letter
Number handling process is simplified, and improves the reliability of communication.Also, passive Optical Switch Node device uses full optical passive component
The physical layer multicast of optical signal is directly realized by, data can reduce the end-to-end time delay of data without being cached in node.
Especially, it is contemplated that flow between equipment and protection and control device is sensed and performed in industrial control network shared in a network
Proportion is larger, can directly be communicated by described passive light distribute module between the said equipment.Thus the utility model can
Outside the time delay caused by overcoming " storage-forwarding " mechanism, for the discharge characteristic of industrial control network, end is further reduced
To terminal delay time.
2. further, the passive light is distributed mould by the utility model using planar lightwave circuit (PLC) process technique
It is integrated on block (i.e. PODM structures) progress piece, by the passive light distribute module structure of design the network terminal can be realized in physics
Layer to multicast (that is, output interface either port connection the network terminal transmitted by data can pass through design
The all-network terminal that PODM structures multicast to input interface is connected, the network terminal of the either port connection of input interface is sent out
The all-network terminal that the data sent can also be connected by PODM structures multicast to the output interface of design).The utility model pair
It is integrated on passive light distribute module (i.e. PODM structures) the progress piece, the connecting interface number in Optical Switch Node device can be reduced
Amount, reduces due to the possibility for the system failure that connecting interface fails and brings, further improves the stability of system.Typically
Ground, passive device realizes specific function by self structure characteristic, and active device realizes specific function, electric current by externally fed
Fuel factor can accelerate component failure, passive device reliability is far above active device.Optical Switch Node in the utility model
(passive light distribute module, i.e., described PODM structures) uses passive structures completely, compared with existing switch, further increases
The reliability of Optical Switch Node.Disclosure satisfy that high request of the industrial control network to reliability, also, during passive device work without
Power supply is needed, network power consumption can be greatly reduced.Meanwhile, node carries out being convenient for device fabrication after chip-scale is integrated, is ensureing
While reliability, Optical Switch Node manufacturing cost can be also reduced.
3. physical layer multicast optical switching network provided by the utility model, is asked in the data contention for solving each network terminal
During topic, number can be solved using the method for " the multiple spot access control protocol " used in time division multiplexing EPON (TDM-PON)
According to competition.That is, it is the different time slot of each terminal distribution in network by gateway device, and passive light distributes mould in network
Data interaction is carried out between the physical layer data flow direction that block is determined, the control network terminal.The utility model need not be further
Data contention resolution protocol of the exploitation suitable for the MAC layer of this Optical Switch Node device, you can realize data exchange in a network.
Other features and advantages of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.
Brief description of the drawings
Accompanying drawing is used for providing and further understanding to of the present utility model, and constitutes a part for specification, and with this reality
With new embodiment together, for explaining the utility model, do not constitute to limitation of the present utility model.In the accompanying drawings：
Fig. 1 is the passive light distribute module structure chart inside Optical Switch Node device；
Fig. 2 is the physical layer multicast Optical Switch Node apparatus structure that can be integrated on piece according to the utility model embodiment
Figure；
The sensing control network that Fig. 3 is constituted for the Optical Switch Node device of application the utility model embodiment.
Embodiment
Preferred embodiment of the present utility model is illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein excellent
Select embodiment to be merely to illustrate and explain the utility model, be not used to limit the utility model.
Fig. 1 is passive light distribute module (PODM) structure chart inside the Optical Switch Node device, including at least three light
Coupler, each described photo-coupler includes a combining end and at least two branch end, it is characterised in that 3 light
The branch end of coupler is interconnected to form three port loop configuration, and the combining ends of 3 photo-couplers respectively constitutes described
3 ports of three port loop configuration；
The combining end of first photo-coupler for forming three port loop configuration connects described by input interface unit
The input port of passive light distribute module；
The combining end of second photo-coupler for forming three port loop configuration connects described by output interface unit
The output port of passive light distribute module；
The combining end of the 3rd photo-coupler for forming three port loop configuration connects the passive light distribute module
Converge port.
The branch end of 3 photo-couplers be mutually connected for：The first branch end connection of first photo-coupler
First branch end of the second photo-coupler, the second branch end of the first photo-coupler connects the first branch of the 3rd photo-coupler
End, the second branch end of the second photo-coupler connects the second branch end of the 3rd photo-coupler, 3 splitter/couplers
Three combining ends separately constitute 3 ports of 3 port loop configuration.
In above-mentioned passive light distribute module, 3 photo-couplers of the described port loop configuration of formation three can from 1 ×
2 photo-couplers.Other photo-couplers can also realize said function after hanging branch end is handled.
To coordinate the interface of Optical Switch Node device, enough interfaces are provided as far as possible to meet the communication of each terminal
In demand, above-mentioned passive light distribute module, the input port number of described passive light distribute module is q.The input interface
Unit is 1 × q photo-coupler.The combining end of 1 × q photo-couplers connects the combining end of first photo-coupler,
Q branch end of 1 × q photo-couplers is sequentially connected q input port of the passive light distribute module.
Meanwhile, the output port number of the passive light distribute module is t.The output interface unit is 1 × t light
Coupler.The combining end of 1 × t photo-couplers connects the combining end of second photo-coupler, 1 × t photo-couplers
T branch end be sequentially connected t output port of the passive light distribute module.
The naming method of passive light distribute module port is：Q of i-th passive light distribute module structure of q × t × 1 are defeated
Inbound port is sequentially named as port Pi1、Pi2、…、Piq, t output port of this i-th passive light distribute module structure sequentially name
For port Po1、Po2、…、Pot, the convergence port of this i-th passive light distribute module structure is named as port Pc。
Fig. 2 is the physical layer multicast Optical Switch Node device that can be integrated on piece built using above-mentioned passive light distribute module
Structure chart, is specifically included：Array waveguide grating (AWG) and at least one above-mentioned passive light distribute module (PODM), each
The partial wave port of the convergence port of described passive light distribute module (PODM) successively with the array waveguide grating (AWG)
Connection.Each input that each input port of the passive light distribute module (PODM) is sequentially connected the Optical Switch Node device connects
Mouthful, each output that each output port of the passive light distribute module (PODM) is sequentially connected the Optical Switch Node device connects
Mouthful, the multiplex port of the array waveguide grating (AWG) connects the convergence interface of the Optical Switch Node device.
Optical Switch Node device as shown in Figure 2 is by the n passive light distribute module (PODM based on planar light wave circuit
1st, PODM 2 ..., PODM n) constituted with 1 array waveguide grating (AWG).Wherein, each based on the passive of planar light wave circuit
Light distribute module has 3 groups of ports, respectively input port Pi1、Pi2、…、Piq, output port Po1、Po2、…、PotWith pool side
Mouth Pc.Array waveguide grating (AWG) has 2 groups of ports, respectively partial wave port Pc1、Pc2、…、PcnWith multiplex port Po。
The connected mode of each component is in device：First passive light distribute module PODM 1 convergence port PcWith array ripple
First partial wave port P of guide grating (AWG)c1It is connected, the second passive light distribute module PODM 2 convergence port PcWith array ripple
Second partial wave port P of guide grating (AWG)c2It is connected, the like, the n-th passive light distribute module PODM n convergence port Pc
With the n-th partial wave port P of array waveguide grating (AWG)cnIt is connected.
Each port building form of Optical Switch Node device is：The respective input port P of PODM 1 to PODM ni1、Pi2、…、
PiqThe input interface A of Optical Switch Node device is sequentially constituted, according to passive light distribute module PODM label, A is named successively11、
A12、…、A1q、A21、A22、…、A2q、……、An1、An2、…、Anq, the respective output port P of PODM 1 to PODM no1、
Po2、…、PoqThe output end interface B of Optical Switch Node device is sequentially constituted, according to passive light distribute module PODM label, according to
It is secondary to be named as B11、B12、…、B1q、B21、B22、…、B2q、……、Bn1、Bn2、…、Bnq, array waveguide grating AWG multiplex port
PoFor the convergence interface of Optical Switch Node device.
Meanwhile, in above-mentioned physical layer multicast Optical Switch Node device, each passive light distribute module and Waveguide array light
Grid (AWG) are realized integrated on piece by planar lightwave circuit (PLC) process technique.
The physical layer multicast Optical Switch Node device that can be integrated on piece can be according to Fig. 3 and sensor/actuator
(i.e. sensing is with performing equipment), protection equipment/control device (i.e. protection and control device), and gateway device carry out networking.
The specific annexation of network is：
The sensing is connected with performing equipment with the input interface of the Optical Switch Node device, for gathering sensing data
Or perform control instruction；
The protection is connected with control device with the output interface of the Optical Switch Node device, for receiving the sensing
Data send the control instruction；
The Optical Switch Node device is used for scheduling according to the gateway device, realize the sensing with perform equipment,
Data interaction between protection and control device and gateway device, three；
The gateway device is connected with the convergence interface of the Optical Switch Node device, for dispatching the sensing with performing
Equipment and the protection and control device, while realizing the sensing and performing equipment or the protection and control device and outer
Portion's network data exchange.Gateway device is connected by public network or Intranet with back-end server.IEEE802.3ah standards provide one
Possible contention resolution scheme is planted, and has been widely used in by industry in time division multiplexing EPON (TDM-PON).Here,
Similar method is employed in the network of design, the communication between each terminal in physical layer multicast optical switching network is realized.
In above-mentioned physical layer multicast optical switching network, each passive light distribute module in the Optical Switch Node device
Operation wavelength is different, the array that the operation wavelength of each passive light distribute module is connected with the passive light distribute module
The operation wavelength of the partial wave port of waveguide optical grating (AWG) matches (wavelength is identical), operating wave of the sensing with performing equipment
The operation wavelength of the long passive light distribute module connected with the sensing and executor module matches (wavelength is identical), described to protect
Protect the operating wave appearance for the passive light distribute module being connected with the operation wavelength of control device with the protection with control device
With (wavelength is identical).
Thus, under this configuration, in the physical layer multicast optical switching network, the sensing that is mutually related is with performing equipment
Preferably it is connected with protection with control device with same passive light distribute module and (senses and be connected to the passive light point with performing equipment
Input port with module, protection is connected to the output port of the passive light distribute module with control device).This method can be use up
It is likely to reduced gateway device to participate in dispatching the frequency for realizing data interaction, and then further reduces end-to-end time delay, especially A, B
Communication delay between the terminal that two interfaces are connected.The structure can be further directed to sensing in industrial control network with performing
Flow occupies the discharge characteristic of most network traffics between equipment and protection and control device, further big portion in reduction network
The end-to-end time delay of shunt volume.
In certain industrial control network shown in Fig. 3, sensing is each with execution equipment and Optical Switch Node device input interface A's
Mouth connection, protection is connected with control device with Optical Switch Node device output interface B each mouth, the convergence of Optical Switch Node device
Interface connects gateway device, and gateway device is connected by public network or Intranet with back-end server, realizes each terminal device in network
Data exchange.In the structure shown here, the sensing protection related with its business to performing equipment exchanges section with control device by light
Same passive light distribute module in point device realizes data interaction.The network terminal of each passive light distribute module connection
(including sensing is with performing equipment, protection and control device), using the channel of 1 individual wavelengths, each passive light distribute module is used
Wavelength channel and AWG partial waves port Pc1、Pc2、…、PcnMatch.Each network terminal is dispatched by gateway device, is performed " many
Point access control protocol ".
In " the multiple spot access control protocol ", the gateway device of convergence interface connection distributes independent for each network terminal
Time slot simultaneously notifies each network terminal by control frame, and the network terminal only sends data in the time slot being assigned to.Especially, gateway
Equipment can be in any time sent without downlink data (data that the network terminal that no gateway device is connected to node is sent)
Time slot is distributed for each network terminal.
Specifically, each several part is communicated as follows：
First, time slot distribution is carried out.The gateway device is exchanged in the initial phase of the exchange network or described
It is each sensing and execution equipment and each protection and control device in the exchange network when in network without downlink data
Separate time slots are distributed, and all sensings are notified with performing equipment and all protections and control device by control frame, it is described each
Individual sensing only sends data with performing equipment and each described protection and control device in the time slot that it is assigned to；
Then, data interaction is started.Data interaction stage, network is divided into four kinds of data interaction sides according to data flow difference
Method：
The first data flow is the guarantor with performing equipment and being connected to same passive light distribute module by the sensing
Data interaction is carried out between shield and control device：Source network terminal therein sends datagram in this terminal sending time slots,
The data message carries out physical layer multicast via the passive light distribute module that is connected with the source network terminal, most the number at last
The purpose network terminal is transferred to according to message；
Second of data flow is the protection from performing equipment and being connected to different passive light distribute modules by the sensing
Data interaction is carried out between control device：Source network terminal therein sends datagram in this terminal sending time slots, institute
State data message and carry out physical layer multicast via the passive light distribute module being connected with the source network terminal, then by the multicast number
Gateway device is sent into according to via the convergence interface of the Optical Switch Node device, selects whole with purpose network by the gateway device
The wavelength matched is held, the multicast packet is forwarded to purpose network terminal institute by the convergence interface of Optical Switch Node device
The passive light distribute module of connection carries out second of physical layer multicast, and most the data message transfers to purpose network end at last
End；
The third data flow is to be set by the sensing with performing equipment or the protection with control device with the gateway
Server after standby carries out data interaction：Source network terminal therein sends datagram in this terminal sending time slots, described
Data message carries out physical layer multicast via the passive light distribute module being connected with the source network terminal, and the data message is turned
The gateway device is delivered to, is sent by the gateway device to the server；
4th kind of data flow is to issue data to the sensing with performing equipment by the server after the gateway device
Or the protection and control device：The server sends the data to the gateway device, and the gateway device is selected
The wavelength matched with the purpose network terminal, forwards the data on the passive light connected to the purpose network terminal and distributes mould
Block carries out physical layer multicast, and most the data deliver to the purpose network terminal at last.
Here, source network terminal refers to the network terminal for sending data, and the network that the purpose network terminal refers to data to be received is whole
End.Described sensing can not only be used for source network terminal with execution equipment and described protection with control device also can be as mesh
The network terminal.
The advantage of technical solutions of the utility model is mainly reflected in：
In industrial control network, compared with the initial data that sensor is gathered, flow proportional very little shared by control command.With
Exemplified by transformer station's internal procedure layer network, wherein shared flow proportional exceedes the initial data of each sensor collection in a network
90%.Because the related sensing of business is with performing equipment, protection and control device, in the present embodiment, light exchange is connected to
Same passive light distribute module in node apparatus, more than in 4 kinds of transmitting procedures, most of network traffics can be by institute
The first transmission method stated is realized.The process makes full use of the physical layer multicast Optical Switch Node designed by the utility model to fill
The characteristics of putting without " storage-forwarding ", greatly reduces the end-to-end time delay of data message.Also, compared with electric interchanger, by
The network structure of Optical Switch Node device composition has good reliability and relatively low power consumption.
One of ordinary skill in the art will appreciate that：Preferred embodiment of the present utility model is the foregoing is only, and
Limitation the utility model is not used in, although the utility model is described in detail with reference to the foregoing embodiments, for ability
For the technical staff in domain, it can still modify to the technical scheme that foregoing embodiments are recorded, or to its middle part
Technical characteristic is divided to carry out equivalent substitution.It is all within spirit of the present utility model and principle, any modification for being made, equally replace
Change, improve, should be included within protection domain of the present utility model.
Claims (9)
1. a kind of passive light distribute module, including at least three photo-coupler, each described photo-coupler include a combining
End and at least two branch end, it is characterised in that the branch end of 3 photo-couplers is interconnected to form three port ring junctions
Structure, the combining end of 3 photo-couplers respectively constitutes 3 ports of three port loop configuration；
The combining end of first photo-coupler for forming three port loop configuration connects described passive by input interface unit
The input port of light distribute module；
The combining end of second photo-coupler for forming three port loop configuration connects described passive by output interface unit
The output port of light distribute module；
The combining end of the 3rd photo-coupler for forming three port loop configuration connects the convergence of the passive light distribute module
Port.
2. passive light distribute module as claimed in claim 1, it is characterised in that the 3 of the described port loop configuration of formation three
Individual photo-coupler is 1 × 2 photo-coupler.
3. passive light distribute module as claimed in claim 2, it is characterised in that the input port of the passive light distribute module
Number is q, and the input interface unit is 1 × q photo-coupler, the combining end connection of 1 × q photo-couplers described the
The combining end of one photo-coupler, q branch end of 1 × q photo-couplers is sequentially connected q of the passive light distribute module
Input port.
4. passive light distribute module as claimed in claim 2, it is characterised in that the output port of the passive light distribute module
Number is t, and the output interface unit is 1 × t photo-coupler, the combining end connection of 1 × t photo-couplers described the
The combining end of two photo-couplers, t branch end of 1 × t photo-couplers is sequentially connected t of the passive light distribute module
Output port.
5. a kind of physical layer multicast Optical Switch Node device, it is characterised in that including array waveguide grating and at least one such as power
Profit requires 1 to 4 any described passive light distribute module, the convergence port of each passive light distribute module successively with
The partial wave port connection of the array waveguide grating,
Each input port of the passive light distribute module is sequentially connected each input interface of the Optical Switch Node device, described
Each output port of passive light distribute module is sequentially connected each output interface of the Optical Switch Node device, the Waveguide array
The multiplex port of grating connects the convergence interface of the Optical Switch Node device.
6. physical layer multicast Optical Switch Node device as claimed in claim 5, it is characterised in that each passive light distribution mould
The operation wavelength of block matches with the operation wavelength of its partial wave port for converging the array waveguide grating that port is connected.
7. physical layer multicast Optical Switch Node device as claimed in claim 5, it is characterised in that each passive light distribution mould
Block and array waveguide grating pass through integrated on planar lightwave circuit process technique piece.
8. a kind of physical layer multicast optical switching network, it is characterised in that including sensing with perform equipment, protection and control device,
Gateway device and the Optical Switch Node device as described in claim 5 to 7 is any；
The sensing is connected with performing equipment with the input interface of the Optical Switch Node device, for gathering sensing data or holding
Row control instruction；
The protection is connected with control device with the output interface of the Optical Switch Node device, for receiving the sensing data
Or send the control instruction；
The gateway device is connected with the convergence interface of the Optical Switch Node device, for dispatching the sensing with performing equipment
And the protection and control device, while realizing the sensing with performing equipment or the protection and control device and extranets
Network data interaction；
The Optical Switch Node device is used for the scheduling according to the gateway device, realizes the sensing with performing equipment, protection
With control device and gateway device, the data interaction between three.
9. physical layer multicast optical switching network as claimed in claim 8, it is characterised in that in the Optical Switch Node device
The operation wavelength of each passive light distribute module is different, operation wavelength and the passive light of each passive light distribute module
The operation wavelength of the partial wave port for the array waveguide grating that distribute module is connected matches, work of the sensing with performing equipment
Make wavelength with the sensing with performing the operation wavelength for the passive light distribute module that equipment is connected to match, the protection and control
The operation wavelength for the passive light distribute module that the operation wavelength of equipment is connected with the protection with control device matches.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114553350A (en) * | 2020-11-24 | 2022-05-27 | 中国科学院沈阳自动化研究所 | Deterministic low-delay message processing method |
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| CN114553350A (en) * | 2020-11-24 | 2022-05-27 | 中国科学院沈阳自动化研究所 | Deterministic low-delay message processing method |
| CN114553350B (en) * | 2020-11-24 | 2023-09-05 | 中国科学院沈阳自动化研究所 | Deterministic low-delay message processing method |
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