CN108833243B - High-speed optical data bus based on passive optical bus technology - Google Patents
High-speed optical data bus based on passive optical bus technology Download PDFInfo
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- CN108833243B CN108833243B CN201810577843.6A CN201810577843A CN108833243B CN 108833243 B CN108833243 B CN 108833243B CN 201810577843 A CN201810577843 A CN 201810577843A CN 108833243 B CN108833243 B CN 108833243B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 56
- 238000005516 engineering process Methods 0.000 title claims abstract description 19
- 239000013307 optical fiber Substances 0.000 claims abstract description 62
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 6
- 230000001066 destructive effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 9
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
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- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
- H04B10/272—Star-type networks or tree-type networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
- H04B10/278—Bus-type networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/4028—Bus for use in transportation systems the transportation system being an aircraft
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Abstract
The invention discloses a high-speed optical data bus based on a passive optical bus technology, which can realize high-speed and high-reliability communication of a communication network. The core of the data bus structure is a high-speed reliable optical bus network architecture based on an optical fiber beam splitter and a beam combiner, wherein the high-speed and high-efficiency optical fiber beam combiner and the optical fiber beam splitter are the basis of the bus structure, and the transmission speed and reliability of the system can be improved through a low-delay medium access protocol and a network communication safe and reliable transmission technology. The high-speed data bus has the advantages of high optical fiber speed, high throughput, low time delay, good electromagnetic compatibility and light weight, and also has the advantages of simple passive bus technology structure, low cost and good reliability, and the advantages of good real-time performance and reconfigurability of a novel medium access control protocol.
Description
Technical Field
The invention belongs to the field of optical network buses, and particularly relates to a high-speed optical data bus based on a passive optical bus technology.
Background
The data bus technology is one of key core technologies of an aerospace electronic system, and provides a high-speed, real-time and high-reliability communication link for information exchange among electronic devices of military equipment. Along with the development of national defense technology, the electronization, miniaturization and intellectualization of military equipment are continuously improved, the communication complexity among the equipment is continuously increased, and the signal types, the acquisition speed and the channel number are also multiplied, so that a bus communication system is urgently needed, and the bus communication system is required to realize the characteristics of high speed, low time delay, high reliability, strong electromagnetic interference resistance, light weight, small size and reconfigurability of a bus.
Aircraft weaponry systems place increasingly higher demands on bus output throughput, transmission real-time, and reliability. Such as seeker image transmission, take at least tens to hundreds of megabits of bandwidth. Sensor data transmission and distributionThe transmission delay requirement of the network does not exceed 100ps, and the transmission delay requirement of the transmission of the command and response information is not more than 10-6And s. Meanwhile, the spacecraft has a severe operating environment, a small volume and a small space and a complex electromagnetic environment, and puts high requirements on the fault-tolerant capability, reliability, electromagnetic compatibility, volume, weight, power consumption and the like of a data bus. There is therefore a great need to develop a new bus system for aircraft weapons systems to facilitate the development of modern military technology.
Disclosure of Invention
The invention aims to provide a high-speed optical data bus structure based on a passive optical bus technology, aiming at the defects of the existing optical network bus structure in the aspects of high speed, low time delay and reconfigurability.
The purpose of the invention is realized by the following technical scheme: a high-speed optical data bus based on passive optical bus technology, comprising:
at least two bus line working units are provided,
a bus network connection unit connecting the respective bus work units,
the bus working unit comprises a data bus, a clock bus and M working nodes, wherein two ends of the data bus are respectively connected with a first optical fiber beam combiner and a first optical fiber beam splitter, two ends of the clock bus are respectively connected with a second optical fiber beam combiner and a second optical fiber beam splitter, and the M working nodes are respectively connected with the first optical fiber beam combiner, the first optical fiber beam splitter, the second optical fiber beam combiner and the second optical fiber beam splitter.
Further, the bus network connection unit is a bridge or a repeater.
Furthermore, each working node comprises a physical layer and a data link layer, and the data transmission function is completed by respective controllers in a non-destructive bit-by-bit arbitration mode.
Furthermore, all the working nodes transmit the data information to a data bus through the first optical fiber beam combiner, perform power distribution through the first optical fiber beam splitter, and transmit the power distribution to all the working nodes in the bus working unit to complete data information transmission; meanwhile, the time information of all the working nodes is transmitted through the second optical fiber beam combiner, the clock bus and the second optical fiber beam splitter.
Further, the first optical fiber combiner, the first optical fiber beam splitter, the second optical fiber beam combiner and the second optical fiber beam splitter adopt two structures from a single mode to a multimode or from a single mode to a single mode.
Furthermore, the delay of the data signal on the data bus is equal to the delay of the clock signal on the clock bus.
The invention has the beneficial effects that the invention combines the traditional star-shaped and bus-type optical network bus structure and adopts the optical fiber beam combiner and the optical fiber beam splitter to build the bus structure. The method has the great advantages that the complexity and the power consumption of an optical bus framework can be greatly reduced by the optical passive bus, and the reliability, the miniaturization and the low power consumption of the bus are ensured while the bus speed is improved. However, the conventional optical signal combining is realized by an optical coupler, which has the disadvantage of large insertion loss, limits the number of nodes of an optical bus based on an optical coupling architecture, and affects the practicability of the optical bus. The application provides a method for realizing a novel optical beam combiner, and realizes low insertion loss combining of multiple paths of optical signals based on the optical beam combiner, thereby greatly reducing the insertion loss of an optical bus and improving the reliability of a system.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below;
FIG. 1 is a schematic diagram of an optical bus network architecture according to the present invention;
in the figure: the system comprises a data bus 1, a clock bus 2, a first optical fiber beam combiner 3, a second optical fiber beam combiner 4, a first optical fiber beam splitter 5, a second optical fiber beam splitter 6, a bus network connection unit 7, a first bus working unit 8 and a second bus working unit 9.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. Other embodiments, which can be derived by one of ordinary skill in the art from the embodiments of the present invention without creative efforts, are also within the scope of the present invention.
As shown in fig. 1, the novel high-speed optical data bus based on the passive optical bus technology includes at least two bus working units and a bus network connection unit 7 connecting each bus working unit, where the bus working units include a data bus 1, a clock bus 2, a first optical fiber combiner 3, a second optical fiber combiner 4, a first optical fiber splitter 5, a second optical fiber splitter 6, M working nodes, and the like;
before describing the steps of the method, the following concepts are explained:
the bus network connection unit 7 is a connection device between each bus working unit (such as the first bus working unit 8 and the second bus working unit 9 in fig. 1), and is used for implementing data transmission between each bus working unit and implementing a final communication network. Only the connection between the first bus operating unit 8 and the second bus operating unit 9 is shown in the figure, and the actual operation is not limited to the connection between the two bus operating units. The bus network connection unit 7 may be a bridge or a repeater.
With the bus network connection unit 7 as a boundary, the optical data communication network is divided into a plurality of independent bus working units (such as a first bus working unit 8 and a second bus working unit 9 in fig. 1); the architecture of the bus work unit mainly comprises M work nodes XiAnd (i ═ 1,2,3,4 …, M) is connected with two parts of the bus optical cable (data bus 1 and clock bus 2) through the optical fiber beam splitters (first optical fiber beam splitter 5 and second optical fiber beam splitter 6) and the beam combiners (first optical fiber beam combiner 3 and second optical fiber beam combiner 4). Data signals of the working nodes are coupled into a data bus 1 through a high-performance first optical fiber beam combiner 3, and then the data are equally distributed to all the working nodes through a first optical fiber beam splitter 5; meanwhile, the clock signal of the working node is coupled into the clock bus 2 through the high-performance second optical fiber beam combiner 4 and then is realized through the second optical fiber beam splitter 6The data are distributed to all the working nodes equally; and ensuring the data reception of the target working node.
The physical topology of the data transmission bus is characterized in that a plurality of working nodes are connected through optical fibers, each working node comprises a physical layer and a data link layer, and the data transmission function is completed through respective controllers in a non-destructive bit-by-bit arbitration mode. When any one working node has a fault, the bus structure is not damaged, and error isolation and fault location are facilitated.
The signal transmission comprises the following steps:
step 1: any working node X in the bus working unit 8i(i ═ 1,2,3,4 …, M) the clock signal enters the clock bus 2 through the second optical fiber beam combiner 4, and at the same time the data signal enters the data bus 1 through the first optical fiber beam combiner 3, the two signals are subjected to equal time delay on the bus, and are respectively subjected to power distribution through the second optical fiber beam splitter 6 and the first optical fiber beam splitter 5, and then enter each working node 1-M of the bus;
step 2: and the processor of each working node determines the information processing mode according to the address information carried by the received data.
The invention combines the traditional star and bus type optical network bus structure, and adopts the optical fiber beam combiner and the optical fiber beam splitter to build the bus structure. The method has the great advantages that the complexity and the power consumption of an optical bus framework can be greatly reduced by the optical passive bus, and the reliability, the miniaturization and the low power consumption of the bus are ensured while the bus speed is improved. However, the conventional optical signal combining is realized by an optical coupler, which has the disadvantage of large insertion loss, limits the number of nodes of an optical bus based on an optical coupling architecture, and affects the practicability of the optical bus. The application provides a method for realizing a novel optical beam combiner, and realizes low insertion loss combining of multiple paths of optical signals based on the optical beam combiner, thereby greatly reducing the insertion loss of an optical bus and improving the reliability of a system.
One skilled in the art can readily devise many variations and modifications without departing from the spirit and scope of the invention as defined in the following claims, from the description and drawings. Any modifications and equivalent variations of the above-described embodiments, which are made in accordance with the technical spirit and substance of the present invention, fall within the scope of protection of the present invention as defined in the claims.
Claims (6)
1. A high-speed optical data bus based on passive optical bus technology is characterized in that: the method comprises the following steps:
at least two bus line working units are provided,
a bus network connection unit (7) for connecting the respective bus work units,
the bus working unit comprises a data bus (1), a clock bus (2) and M working nodes, wherein two ends of the data bus (1) are respectively connected with a first optical fiber beam combiner (3) and a first optical fiber beam splitter (5), two ends of the clock bus (2) are respectively connected with a second optical fiber beam combiner (4) and a second optical fiber beam splitter (6), and the M working nodes are respectively connected with the first optical fiber beam combiner (3), the first optical fiber beam splitter (5), the second optical fiber beam combiner (4) and the second optical fiber beam splitter (6).
2. A high-speed optical data bus based on passive optical bus technology as claimed in claim 1, wherein: the bus network connection unit (7) is a bridge or a repeater.
3. A high-speed optical data bus based on passive optical bus technology as claimed in claim 1, wherein: each working node comprises a physical layer and a data link layer, and the data transmission function is completed by respective controllers in a non-destructive bit-by-bit arbitration mode.
4. A high-speed optical data bus based on passive optical bus technology as claimed in claim 1, wherein: all the working nodes transmit data information to a data bus (1) through a first optical fiber beam combiner (3), then power distribution is carried out through a first optical fiber beam splitter (5), and the data information is transmitted to all the working nodes in a bus working unit to complete data information transmission; meanwhile, the time information of all the working nodes is transmitted through the second optical fiber beam combiner (4), the clock bus (2) and the second optical fiber beam splitter (6).
5. A high-speed optical data bus based on passive optical bus technology as claimed in claim 1, wherein: the first optical fiber beam combiner (3), the first optical fiber beam splitter (5), the second optical fiber beam combiner (4) and the second optical fiber beam splitter (6) adopt two structures from a single mode to a multimode or from a single mode to a single mode.
6. A high-speed optical data bus based on passive optical bus technology as claimed in claim 1, wherein: the delay of the data signal on the data bus (1) is equal to the delay of the clock signal on the clock bus (2).
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| CN201810577843.6A CN108833243B (en) | 2018-06-07 | 2018-06-07 | High-speed optical data bus based on passive optical bus technology |
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| CN201810577843.6A CN108833243B (en) | 2018-06-07 | 2018-06-07 | High-speed optical data bus based on passive optical bus technology |
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| CN108833243B true CN108833243B (en) | 2020-05-29 |
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| CN111510217B (en) * | 2020-04-15 | 2021-05-28 | 南京大学 | Photoelectric hybrid bus system applied to long-distance communication of high-speed train |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101039528A (en) * | 2007-02-02 | 2007-09-19 | 东南大学 | Graded control computer system based on optical packet switch and optical multicast |
| CN101546286A (en) * | 2009-04-30 | 2009-09-30 | 北京星网锐捷网络技术有限公司 | Method and device for logic analysis of high-speed serial bus |
| CN104734781A (en) * | 2015-03-02 | 2015-06-24 | 中国人民解放军国防科学技术大学 | Optical transceiver with serial-parallel conversion function |
| CN104796199A (en) * | 2014-01-17 | 2015-07-22 | 康宇星科技(北京)有限公司 | Design method for realizing high-speed data bus by optical fiber channel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7729398B2 (en) * | 2007-04-10 | 2010-06-01 | Northrop Grumman Systems Corporation | Error control for high-power laser system employing diffractive optical element beam combiner |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101039528A (en) * | 2007-02-02 | 2007-09-19 | 东南大学 | Graded control computer system based on optical packet switch and optical multicast |
| CN101546286A (en) * | 2009-04-30 | 2009-09-30 | 北京星网锐捷网络技术有限公司 | Method and device for logic analysis of high-speed serial bus |
| CN104796199A (en) * | 2014-01-17 | 2015-07-22 | 康宇星科技(北京)有限公司 | Design method for realizing high-speed data bus by optical fiber channel |
| CN104734781A (en) * | 2015-03-02 | 2015-06-24 | 中国人民解放军国防科学技术大学 | Optical transceiver with serial-parallel conversion function |
Non-Patent Citations (1)
| Title |
|---|
| 《基于无源光网络的高速光纤总线技术研究》;曹素芝;《宇航学报》;20110530;第32卷(第5期);第1156-1162页 * |
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