CN102957476A - Plastic optical fiber dual-loop hot standby seamless networking communication system - Google Patents
Plastic optical fiber dual-loop hot standby seamless networking communication system Download PDFInfo
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- CN102957476A CN102957476A CN2012104208461A CN201210420846A CN102957476A CN 102957476 A CN102957476 A CN 102957476A CN 2012104208461 A CN2012104208461 A CN 2012104208461A CN 201210420846 A CN201210420846 A CN 201210420846A CN 102957476 A CN102957476 A CN 102957476A
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Abstract
The invention provides a plastic optical fiber dual-loop hot standby seamless networking communication system, which comprises an optical transceiver head 1, an optical transceiver heads 2, an optical transceiver head 3, an optical transceiver head 4 and an optical fiber hub, wherein the optical transceiver head 1 is in data interaction with the optical transceiver head 2, and is in data interaction with the optical transceiver head 4 through the optical fiber hub, and the optical transceiver head 2 is in data interaction with the optical transceiver head 3; and the optical transceiver head 3 is in data interaction with the optical transceiver head 4. According to the plastic optical fiber dual-loop hot standby seamless networking communication system provided by the invention, a closed-loop hot standby double-loop network structure is realized, so that each module has an automatic relay function, and the stability and reliability of the system are greatly improved; and at the same time, by using a mode that a connection circuit replaces a CPU (Central Processing Unit) to process, the communication distance constraint problems in the traditional way are effectively solved; and the system has a remote fault positioning function, and is convenient to maintain.
Description
Technical field
The invention belongs to the power communication field, be specifically related to the hot standby seamless netting communication system in a kind of plastic fiber double loop.
Background technology
The development of plastic fiber starts from the seventies du pont company in last century, to the eighties in last century, MIT develops PMMA (polymethyl acrylate) plastic fiber that can be used for the communications field, and its light signal loss parameter (attenuation coefficient) is less than 200dB/km.Domesticly namely developed communication at Chinese Academy of Sciences's physics and chemistry in 2005 and use the PMMA plastic fiber, its attenuation coefficient is declared domestic research and development and the application of plastic fiber in the communications field that begun less than 200dB/km.
Plastic fiber is as a kind of Novel Communication cable, have the characteristics such as the transmission of data reliability is high, good stability, real-time, capacity is large, cost is low, easy construction, can be applicable to the particular surroundingss such as high electric field, high-intensity magnetic field, thunder and lightning hotspots, be applied at present the fields such as Smart Home, automotive electronics.But retrain owing to the plastics networking mode often adopts monocycle series network, communication distance (＜100M), and can only increase the mode that the CPU processing unit forms in parallel or two closed networks at cell node, therefore, its network stabilization, reliability and transmission range problem have restricted the application of plastic fiber always.
Summary of the invention
For overcoming defects, the invention provides the hot standby seamless netting communication system in a kind of plastic fiber double loop, realize the standby double loop of closed loop heat network configuration, made each module self possess the function of automatic relay, greatly strengthened Systems balanth and reliability; Simultaneously, adopt connecting circuit to replace the mode that CPU processes, effectively solved communication distance restricted problem under the traditional approach; Modules will have relative independentability on the communication network, and the damage of individual module can not cause the paralysis of whole network, and have the remote failure positioning function, be convenient to safeguard.
For achieving the above object, the invention provides the hot standby seamless netting communication system in a kind of plastic fiber double loop, its improvements are, described system comprises: light transmitting-receiving 1, light transmitting-receiving 2, light transmitting-receiving 3, light transmitting-receiving 4 and fibre concentrator; Data interaction is carried out in described light transmitting-receiving 1 and described light transmitting-receiving 2, receives and dispatches 4 by described fibre concentrator and described light and carries out data interaction; Data interaction is carried out in described light transmitting-receiving 2 and described light transmitting-receiving 3; Data interaction is carried out in described light transmitting-receiving 3 and described light transmitting-receiving 4.
In the optimal technical scheme provided by the invention, described light transmitting-receiving 1, the transmitting-receiving of described light 2, the transmitting-receiving of described light 3 be connected light transmitting-receiving 4 and comprise respectively: the light Transmit-Receive Unit, drive circuit and the terminal communication mouth that connect successively.
In the second optimal technical scheme provided by the invention, described smooth Transmit-Receive Unit comprises: 2 optical transceiving devices that are set up in parallel.
In the 3rd optimal technical scheme provided by the invention, described optical transceiving device comprises the optical transmitting set and the light-sensitive device that are set up in parallel.
In the 4th optimal technical scheme provided by the invention, described optical transmitting set employing model is 1522 chip; Light-sensitive device employing model is 2522 chip.
In the 5th optimal technical scheme provided by the invention, described drive circuit, employing take model as the photoelectric switching circuit of core as SN75451B.
In the 6th optimal technical scheme provided by the invention, described terminal communication mouth is RS232, RS485, TTL interface.
Compared with the prior art, the hot standby seamless netting communication system in a kind of plastic fiber provided by the invention double loop, in conjunction with the real needs of plastic fiber in the power industry application, on the basis of existing plastic fiber networking mode and communication pattern, developed the hot standby seamless group-net communication module in plastic fiber double loop; Native system is by the reverse two circuit communication modes networking of employing, and the mode that adopts connecting circuit to replace the CPU processing is carried out unit node data transmission, embedded automatic active relaying of while; And, can fully solve the problem of the network stabilization of common plastic fiber networking mode, when any terminal unit breaks down, its upstream and downstream node all can be with the mode seamless switching of stand-by heat, form various closed loops and reverse related transmitting information, thereby make whole communication network continue to keep operation and can locate rapidly fault, when network operation or increase, mobile node, needn't interrupt whole network; Moreover, by distinctive automatic active relaying function, make the communication distance of plastic fiber obtain significantly improving, but therefore have very strong practicality and generalization.
Description of drawings
Fig. 1 is the structural representation of light transmitting-receiving head.
Fig. 2 is the structure chart of the hot standby seamless netting communication system in plastic fiber double loop.
Embodiment
As shown in Figure 2, the hot standby seamless netting communication system in a kind of plastic fiber double loop, described system comprises: light transmitting-receiving 1, light transmitting-receiving 2, light transmitting-receiving 3, light transmitting-receiving 4 and fibre concentrator; Data interaction is carried out in described light transmitting-receiving 1 and described light transmitting-receiving 2, receives and dispatches 4 by described fibre concentrator and described light and carries out data interaction; Data interaction is carried out in described light transmitting-receiving 2 and described light transmitting-receiving 3; Data interaction is carried out in described light transmitting-receiving 3 and described light transmitting-receiving 4.
As shown in Figure 1, described light transmitting-receiving 1, the transmitting-receiving of described light 2, the transmitting-receiving of described light 3 be connected light transmitting-receiving 4 and comprise respectively: the light Transmit-Receive Unit, drive circuit and the terminal communication mouth that connect successively.
Described smooth Transmit-Receive Unit comprises: 2 optical transceiving devices that are set up in parallel.
Described optical transceiving device comprises the optical transmitting set and the light-sensitive device that are set up in parallel.
Described optical transmitting set employing model is 1522 chip; Light-sensitive device employing model is 2522 chip.
Described drive circuit, employing take model as the photoelectric switching circuit of core as SN75451B.
Described terminal communication mouth is RS232, RS485, TTL interface.
By following examples the hot standby seamless netting communication system in plastic fiber double loop is further described.
As shown in Figure 1, light transmitting-receiving head has designed two pairs of equal parallel optical transceiving devices innovatively, is respectively T1, R1 and T2, R2, and wherein T1 and T2, R1 and R2 are respectively the relations that walks abreast.
As shown in Figure 1, R1/R2 receives signal, sends to terminal unit R1/R2 → R by connecting circuit on the one hand; By drive circuit Q signal is amplified on the other hand and drive T1 to downstream node, the T2 upstream nodes sends.
This light transmitting-receiving head transmission path under normal circumstances is: R1/R2 → R → Q → (T1 and T2) → (up/down trip module); When having module to break down in the circuit, its transmission path then becomes: R1 → R → Q → T2 → (last transmitting-receiving head) or R2 → R → Q → T1 → (a rear transmitting-receiving head).
Above Electric Design scheme has been avoided traditional CPU processing mode dexterously, has greatly improved the reliability of module; Realized the automatic relay function of module, effectively solved plastic fiber unit's node communication distance restraint problem, for Hot Spare and the fault seamless handover function of two closed loop series networks provides technical support.
This patent Networking Design is to carry out innovative design on the basis of summing up the traditional endless network, and its outstanding feature is exactly to have increased the reverse transmit ring of information (such as Fig. 2) on the basis of single loop network.
Under normal condition, the master station communication unit sends do-nothing instruction to primary loop, checking network smoothness.Instruction is according to the mode closed loop transmission of (master station communication unit) → R1 → T1 → R3 → T3 → R5 → T5 → R7 → T7 → (master station communication unit).In the situation that primary loop fault, the loop for subsequent use that comes into operation, instruction is according to the mode closed loop transmission of (master station communication unit) → R8 → T8 → R6 → T6 → R4 → T4 → R2 → T2 → (master station communication unit).In unit terminal (such as T3, R3, T4, R4 place node) fault, the active-standby loop is all in the disabled situation, its upstream node forms closed loop according to the path of (master station communication unit) → R1 → T2 → (master station communication unit) and carries out the reverse transmission of information, and downstream node forms closed loop according to the path of (master station communication unit) → R8 → T8 → R6 → T5 → R7 → T7 → (master station communication unit) and carries out the reverse transmission of information.
Double loop network makes network have good expansibility by using hot standby seamless switching technique, when increase, minimizing or mobile node, can guarantee the proper communication of other nodes, and make system possess the ability of long range positioning fault point.
What need statement is that content of the present invention and embodiment are intended to prove the practical application of technical scheme provided by the present invention, should not be construed as the restriction to protection range of the present invention.Those skilled in the art can do various modifications, be equal to and replace or improve inspired by the spirit and principles of the present invention.But these changes or modification are all in the protection range that application is awaited the reply.
Claims (7)
1. the hot standby seamless netting communication system in plastic fiber double loop is characterized in that, described system comprises: light transmitting-receiving 1, light transmitting-receiving 2, light transmitting-receiving 3, light transmitting-receiving 4 and fibre concentrator; Data interaction is carried out in described light transmitting-receiving 1 and described light transmitting-receiving 2, receives and dispatches 4 by described fibre concentrator and described light and carries out data interaction; Data interaction is carried out in described light transmitting-receiving 2 and described light transmitting-receiving 3; Data interaction is carried out in described light transmitting-receiving 3 and described light transmitting-receiving 4.
2. system according to claim 1 is characterized in that, described light transmitting-receiving 1, the transmitting-receiving of described light 2, the transmitting-receiving of described light 3 be connected light transmitting-receiving 4 and comprise respectively: the light Transmit-Receive Unit, drive circuit and the terminal communication mouth that connect successively.
3. system according to claim 2 is characterized in that, described smooth Transmit-Receive Unit comprises: 2 optical transceiving devices that are set up in parallel.
4. system according to claim 3 is characterized in that, described optical transceiving device comprises the optical transmitting set and the light-sensitive device that are set up in parallel.
5. system according to claim 4 is characterized in that, described optical transmitting set employing model is 1522 chip; Light-sensitive device employing model is 2522 chip.
6. system according to claim 2 is characterized in that, described drive circuit, and employing take model as the photoelectric switching circuit of core as SN75451B.
7. system according to claim 2 is characterized in that, described terminal communication mouth is RS232, RS485, TTL interface.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591699A (en) * | 2016-02-24 | 2016-05-18 | 山东超越数控电子有限公司 | Double-ring optical network communication method and networking used for industrial control field |
| CN106452572A (en) * | 2016-10-26 | 2017-02-22 | 成都交大许继电气有限责任公司 | Fault locating system and fault locating method of integrated automation optical transceiver of traction substation |
| CN107682084A (en) * | 2017-09-29 | 2018-02-09 | 浙江群力电气有限公司 | A kind of photoelectric communication conversion equipment and photoelectric communication system |
| CN109120345A (en) * | 2018-10-25 | 2019-01-01 | 南方电网科学研究院有限责任公司 | A kind of communication means of low-voltage collecting meter reading plastic optical fiber communication system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591699A (en) * | 2016-02-24 | 2016-05-18 | 山东超越数控电子有限公司 | Double-ring optical network communication method and networking used for industrial control field |
| CN106452572A (en) * | 2016-10-26 | 2017-02-22 | 成都交大许继电气有限责任公司 | Fault locating system and fault locating method of integrated automation optical transceiver of traction substation |
| CN106452572B (en) * | 2016-10-26 | 2018-07-27 | 成都交大许继电气有限责任公司 | Traction substation is comprehensive from optical transceiver failure positioning system and its Fault Locating Method |
| CN107682084A (en) * | 2017-09-29 | 2018-02-09 | 浙江群力电气有限公司 | A kind of photoelectric communication conversion equipment and photoelectric communication system |
| CN109120345A (en) * | 2018-10-25 | 2019-01-01 | 南方电网科学研究院有限责任公司 | A kind of communication means of low-voltage collecting meter reading plastic optical fiber communication system |
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Application publication date: 20130306 |