CN85102333A - Signal transmission system - Google Patents
Signal transmission system Download PDFInfo
- Publication number
- CN85102333A CN85102333A CN85102333.9A CN85102333A CN85102333A CN 85102333 A CN85102333 A CN 85102333A CN 85102333 A CN85102333 A CN 85102333A CN 85102333 A CN85102333 A CN 85102333A
- Authority
- CN
- China
- Prior art keywords
- station
- transmission
- local
- transmission channel
- central station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Landscapes
- Small-Scale Networks (AREA)
- Optical Communication System (AREA)
- Selective Calling Equipment (AREA)
Abstract
The signal transmission system of communication between a central station and a plurality of local station that places in the electric power line steel tower, use hangs on the closed-loop path that the fiber optic cables that wrap up in the overhead wire on the iron tower between central station and the local station constitute transmission channel, realizes from central station to local station with from the signal transmission of local station to central station.
Description
Technical field:
The invention relates to a signal transmission system, is communication transmission system between power station and the many local transfer stations that places electric power pylon about make transmission channel with fiber optics at central station especially.
Background of invention:
The overhead wire (hereinafter being called OPGW) that includes fiber optics hung on just constitute an optical transmission system on the electric power pylon.In this system, all equip a local data transfer equipment in each iron tower, this equipment is collected various data and is transmitted the data-signal of collecting to central station with OPGWS.OPGWS just is formed in the data transmission channel that carries out communication between local data transfer device and the central station.
Fig. 1 is an example of above-mentioned transmission system, wherein, reference number 1 expression electric power pylon, numeral 2 is illustrated in and is the power station of central station in the data transmission system.A local data transfer device 3 is all arranged in each iron tower, and there is a central data processing unit 4 in the power station for 2 li.Local data transfer device 3 is to be connected in series by OPGW data path 7, optical-electrical converter 5, electrical to optical converter 6.The input of each local data transfer device 3 has an optical-electrical converter 5, and output has an electrical to optical converter 6.Therefore, there is such shortcoming in the system of Fig. 1, and promptly transfer of data can only be along local data transfer device 3 to 4 one direction transmission of central data processing unit.
Fig. 2 is for using another example of OPGW data transmission system.This system has overcome the shortcoming of said system, because in this system except a transmission channel 7 that is similar among Fig. 1 is arranged, also have with central data processing unit 4 to the second transmission channel 8 that local transmission apparatus 3 usefulness OPGW carry out communication, can carry out both-way communication.But with the systematic comparison of Fig. 1, must there be the transducer 5 and 6 of double number in this system.
Fig. 3 is for using another example of OPGW data transmission system.In this system, utilize article one data transmission channel 7 from this locality transmission 3 communications farthest to CPU 4, and 8 employings of second data transmission channel are similar to Fig. 2 system coupling method, Fig. 3 system compares with Fig. 2 system, though the number of transducer 5 and 6 can reduce, but very long because of article one transfer of data road 7, increased the loss of article one data transmission channel 7.
Goal of the invention:
Main purpose of the present invention is the inherent defect that overcomes in the said system, a transmission system of using OPGW is provided, this system can realize the both-way communication between CPU and the local transmitter under the situation of the loss that does not increase transducer number and data transmission channel.
Summary of the invention:
The invention provides a signal transmission system, this system can carry out communication having at least between a central station and a plurality of local station that places in the electric power line steel tower.Said system adopts the fiber optic cables that are wrapped in the overhead wire as its transmission channel, overhead wire hangs on the electric power line steel tower of central station and each local station, said fiber optic cables constitute the transmission channel of a closed-loop path, realize that the signal to central station transmits central station to local station with from this locality.
The accompanying drawing summary:
Fig. 1 is to the connection diagram of Fig. 3 for use prior art OPGW transmission system example.
Fig. 4 is the connection diagram of transmission system one embodiment of the present invention.
Fig. 5 is the block diagram of another embodiment of transmission system of the present invention.
Fig. 6 is the detailed connection layout of transmission system shown in Figure 5.
The detailed description of the good embodiment in school of the present invention:
Among Fig. 4, be provided with a central data processing unit 4 in the power station 2, and on each iron tower 1 a local data transfer device 3 arranged.The input of each local data transfer device 3 connects with optical-electrical converter 5 couplings, and its output connects with electrical to optical converter 6 couplings.With signal in the fiber optic cables transmitting locally data link 3 among the OPGW to first transmission channel 7 of central data processing unit 4 with each every local data transfer device series coupled, be about to 3-1,3-3,-... 3-2n-1(is n=1 here, 2,3 ...) individual local transmitter series coupled.With the signal in the fiber optic cables among the OPGW transmission central data processing unit 4 to second transmission channel 8 of local data transfer device 3 with each every local data transfer device series coupled, be about to 3-2,3-4,3-2n local data transfer device series coupled.First transmission channel 7 and second transmission channel 8 are of coupled connections by the local data transfer device 3f of least significant end, and path 7 and path 8 just constitute the closed-loop path of 3 central data processing units 4.
In such method of attachment, the signal of any one among the first group of this locality transmitter 3-2n-1 that connects with the coupling of first transmission channel 7 can be transferred to central data processing unit 4 by first transmission channel 7; The signal of any one among the second group of this locality transmitter 3-2n that connects with the coupling of second transmission channel 8 can pass through second channel 8, and local transmitter 3f farthest, article one passage 7 are transferred to the central data processing unit; The signal of central data processing unit 4, by second transmission channel 8, local transmitter 3f farthest, first transmission channel 7 can be transferred to each local data transfer device 3.
By above-mentioned signal transmission system as can be known, but transmitted in both directions signal or data between CPU 4 and the local transmitter 3, and each local data transfer device only needs two transducers, in addition, owing to use the OPGW channel transmission signal, and have suitable amplification every local transmitter, thereby can prevent the decay that cause of stop signal in transmitting in any direction through each.
Fig. 5 is another embodiment of signal transmission system of the present invention.In this system, main control station HA among power station A1 and the A2 and the fiber optic cables F among HB and the OPGW
1And F
2Coupling connects, with the PCM(pulse code modulation) mode transmits signal and the data between two master stations, between each iron tower H1 each local station in the H4 by a fiber optic cables F
3Series connection is with the data or the signal at transmitting locally station.By such connection, fiber optic cables F
2And F
3Constitute the closed-loop path, realize between the master console and the transmission of bi-directional data between the local station or signal.
Fig. 6 is the detailed connection layout of system shown in Figure 5.Among Fig. 6, a data transmission unit 10 is arranged in the A1 of first power station, this unit 10 comprises a kind of 24 road PCM communication apparatus 11, the output of this PCM communication apparatus 11 and two fiber optic cables F
1And F
2Coupling connects.F
1And F
2Be F
1To F
4Article four, two in the non-metal optical fiber-optic cable, these cable distribution are in liftoff a plurality of iron tower M1 between power station A1 and A2, M2, the M3 of being suspended on ... on overhead wire, transmission line F
1Be just often to use, F
2Be in case of emergency to use.The end of every transmission lines among the first power station A1 connects by PCM transmission equipment 21 couplings in the transmission unit 20 of optical-electrical converter 23a, electrical to optical converter 23b, channel selector switch 22 and second power station A2.Use fiber optic cables F
1And F
2Transmission system be known as first communication system, adopt the PCM system between power station A1 and A2, to carry out communication.
Fiber optic cables F
3By the 30-1 of local station, 30-2 and the 30-3 in each iron tower, fiber optic cables F
3An end connect with data processor 33 couplings in the HA of control station through an optical-electrical converter 32, to F
3Another of optical cable is terminal to be connected with master station HB coupling by electrical to optical converter 34.After connecting like this, from power station A1 along fiber optic cables F
1Or F
2To power station A2, again through fiber optic cables F
3, each local station constitutes a closed-loop path.In this system, each 30-1 of local station, 30-2 all has a transmitter and a receiver among the 30-3, with the time separation mode carry out transfer of data.Each 30-1 of local station, 30-2,30-3 can both pass through fiber optic cables F
3Transmit the various measurement data of wind speed and direction etc. to the master station HA of power station A1, these data also can transfer to master station HB from master station HA by first communication system.In addition, also can realize that from master station HA to the 30-1 of each local station, 30-2 and 30-3 transmit various instructions by first communication system.Instruction according to master station transmits just can make the equipment in the local station, for example is equipped in the 30-1 of local station respectively, the television camera 35-1 of 30-2 and 30-3, and 35-2 and 35-3 carry out work.Specify which platform electricity video camera of starting by the own identification mode of identification code and each local station of the other local station in master station HA sending area.
Fiber optic cables F
4Be used for transmitting the TV signal of each television camera 35-1 to 35-4 to master station HA.
In transmission system shown in Figure 5, when from the 30-1 to 30-3 of local station appoint any one or from control station HB during to HA transmission data or signal, signal or data are by fiber optic cables F among the figure
3Transmission left is input to data processor 33 through optical-electrical converter 32.
On the other hand, when need starting television camera 35-2, master station HA sends the instruction of this television camera of starting that has the 30-2 of this local station identification code or identification address, instruct by a path in first transmission system to PCM communication apparatus 21 transmission signals, then, identification code and instruction, by control station HB, electrical to optical converter 34, fiber optic cables F
3Transfer to the 30-1 of local station from the 30-3 of local station.Judge it is not the identification code of oneself when the 30-3 of local station is a little, inoperative video camera 35-3; And the 30-2 of local station judges it is the recognition code of oneself, starts television camera 35-2 so.
By such connection, only use two fiber optic cables F
2And F
3Just can constitute the closed-loop path, also can use first communication system to carry out the transmitted in both directions of signal simultaneously, thereby reduce the number of required fiber optic cables.
Claims (3)
1, one is used at least one central station and a plurality ofly places in the electric power line steel tower signal transmission system of communication between the local station, said system uses parcel to hang between central station and local station the fiber optic cables in the overhead wire as transmission channel, being characterized as of this signal system: saidly be used for effectively between central station and local station mutually that the fiber optic cables of transmission signals constitute a transmission closed-loop path passage.
2, claim 1 desired signal transmission system, it further is characterized as: to first transmission channel of central station transmission signals and each every first group of local station series coupled that local station formed, from central station each local station coupled in series to second channel with second group of the composition that is left of local station transmission signals, article one, transmission channel and second transmission channel are passed through local station coupling connection farthest, thereby constitute said transmission channel closed-loop path.
3, claim 1 desired signal transmission system, it further is characterized as: first transmission channel be adopt the PCH form from first central station to another central station transmission signals, second transmission channel by each local station from another central station to first said central station transmission signals, thereby constitute said transmission channel closed-loop path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102333A CN1008498B (en) | 1985-04-01 | 1985-04-01 | Signal transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102333A CN1008498B (en) | 1985-04-01 | 1985-04-01 | Signal transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85102333A true CN85102333A (en) | 1987-01-31 |
| CN1008498B CN1008498B (en) | 1990-06-20 |
Family
ID=4792433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85102333A Expired CN1008498B (en) | 1985-04-01 | 1985-04-01 | Signal transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1008498B (en) |
-
1985
- 1985-04-01 CN CN85102333A patent/CN1008498B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1008498B (en) | 1990-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1070326C (en) | Method for providing facility protection, cross-connector system and communication system | |
| CA2078533A1 (en) | Optical communications system having transmission line switching system | |
| CN109613671A (en) | A kind of automatic optical distribution device and its wiring method | |
| CA2188272A1 (en) | Hybrid electricity and telecommunications distribution network | |
| US4690491A (en) | Building data transmission system | |
| CN85102333A (en) | Signal transmission system | |
| CN210119289U (en) | Multi-defense-zone vibration detection device based on optical fiber dual-mode coupling | |
| JPS5736305A (en) | Multivalue control system | |
| CN208675242U (en) | Its communication system of a kind of more electric fiber optical transceivers of more light of Ethernet and application | |
| US5068847A (en) | Fiber optic network architecture having data feedback for monitoring communications thereon | |
| CN105071857A (en) | Cascading multi-span on-tower relay light transmission system | |
| EP0149495A2 (en) | Signal transmission system | |
| CN212413157U (en) | Universal test machine networking system | |
| CN214507102U (en) | Bus equipment based on bus link connector | |
| CN206313912U (en) | Be applied to harbour machinery based on electric force carrier transmission system | |
| CN1141772C (en) | Directional cirrcuit longitudinal connection protection information exchange method and device thereof | |
| JP3906528B2 (en) | Optical communication system | |
| KR890001606B1 (en) | Signal transmission system | |
| DE4139300A1 (en) | Network topology for bidirectional data transmission in passive network - has cable branch points at beginning and end of network dividing central device data lines into local device data lines | |
| JPS6187439A (en) | On-vehicle data transmission network | |
| JPH01222533A (en) | Bus system optical network system | |
| CN1037814A (en) | At least the circuit that has the communication network of an optical concentrator is arranged | |
| JPS636925A (en) | Communication equipment | |
| JPH0246031A (en) | Fault point searching system | |
| JPH0388529A (en) | Network device for duplex optical communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| C14 | Grant of patent or utility model | ||
| C19 | Lapse of patent right due to non-payment of the annual fee |