CN103124194B - The transmission system of current mode analog signal in private network - Google Patents
The transmission system of current mode analog signal in private network Download PDFInfo
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- CN103124194B CN103124194B CN201110367785.2A CN201110367785A CN103124194B CN 103124194 B CN103124194 B CN 103124194B CN 201110367785 A CN201110367785 A CN 201110367785A CN 103124194 B CN103124194 B CN 103124194B
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Abstract
The present invention provides the transmission system of current mode analog signal in a kind of private network.Described system, including at least two trunk subsystem, at least two of which trunk subsystem is connected by optical networking, and each trunk subsystem includes device port, the network port, the first modular converter and the second modular converter, wherein: device port；The network port；First modular converter, for when receiving current mode analog signal from device port, being converted into digital signal by current mode analog signal；And, after receiving digital signal from the second modular converter, convert digital signals into current mode analog signal, and sent by device port；Second modular converter, for after receiving digital signal from the first modular converter, is converted digital signals into optical signal, and is sent by the network port；And, after receiving optical signal from the network port, convert optical signals into digital signal, and send digital signal to the first modular converter.
Description
Technical field
The present invention relates to computer application field, particularly relate to the transmission system of current mode analog signal in a kind of private network.
Background technology
Current mode analog signal has a wide range of applications field as a kind of basic physical signalling.As current mode signal, more use crowd is to be analyzed by its digitized, or uses as a control signal.Although even if equipment so signals such as access network switch can transmit farther, but data are not the most real-time Transmission, are not lossless reducing, so current mode analog signal cannot be carried out remote data communication in private network.
Summary of the invention
The present invention provides the transmission path of a current mode analog signal based on optical fiber.First solving long-distance transmissions problem, secondly because we are to have built a physical pathway for transmission channel, thus realize remote, signal is close to lossless real-time Transmission path.
For solving above-mentioned technical problem, the technical scheme is that
The transmission system of current mode analog signal in a kind of private network, including at least two trunk subsystem, wherein said at least two trunk subsystem is connected by optical networking, and each trunk subsystem includes device port, the network port, the first modular converter and the second modular converter, wherein:
Described device port, is connected with equipment；
The described network port, is connected with described optical networking；
Described first modular converter, is connected with described device port and described second modular converter, for when receiving current mode analog signal from described device port, current mode analog signal being converted into digital signal；And, after receiving digital signal from described second modular converter, described digital signal is converted into current mode analog signal, and is sent by device port；
Described second modular converter, is connected with described first modular converter and the described network port, for after receiving digital signal from described first modular converter, described digital signal is converted into optical signal, and is sent by the described network port；And, after receiving optical signal from the described network port, described optical signal is converted into digital signal, and sends digital signal to described first modular converter.
Preferably, described system also has a characteristic that described system also includes:
Path management subsystem, including:
Configuration module, for the bang path that configuration the first equipment and the optical signal that produces alternately of the second equipment are special；
Described optical networking also includes routing subsystem, is connected with described path management subsystem, including:
Logging modle, is connected with described configuration module, for recording the bang path that between described first equipment and the second equipment, the mutual optical signal produced is special；
Routing module, it is connected with described logging modle, for only when the optical signal that the optical signal received is mutual generation between described first equipment and the second equipment time, the bang path that between the first equipment and the second equipment, the mutual optical signal produced is special is just used to be transmitted.
Preferably, described system also has a characteristic that
Described path management subsystem, also includes:
Modified module, is connected with described configuration module, after the correspondence between described first equipment and the second equipment changes, revises the bang path that optical signal mutual between described first equipment and the second equipment is special, obtains revising result；
Described routing subsystem, also includes:
More new module, is connected with described modified module and described logging modle, for according to described amendment result, updates the bang path of described logging modle record.
Preferably, described system also has a characteristic that described trunk subsystem also includes:
Monitoring port, is connected with network monitoring center；
Transport module, for sending the current mode analog signal obtained, optical signal or digital signal by described monitoring port.
Preferably, described system also has a characteristic that described monitoring port only carries out the transmission operation of current mode analog signal, optical signal or digital signal.
Preferably, described system also has a characteristic that described trunk subsystem also includes:
Multiple control ports, each port and a controlled device are connected；
Sending module, is connected with the plurality of control port, sends for sending, to described controlled device, current mode analog signal, optical signal or the digital signal obtained by the plurality of control port simultaneously.
Preferably, described system also has a characteristic that described control port only carries out the transmission operation of optical signal or digital signal.
Preferably, described system also has a characteristic that described trunk subsystem also includes:
Clock module, for when described trunk subsystem is as the transmitting terminal of signal, controlling described second modular converter, that digital signal is changed frequency is identical to the conversion frequency of optical signal with as corresponding object relay subsystem；Or, when described trunk subsystem is as the receiving terminal of signal, controlling described second modular converter, that optical signal is changed frequency is identical to the conversion frequency of digital signal with as corresponding object relay subsystem.
Preferably, described system also has a characteristic that described private network is private network based on the SDH (SDH) with optical fiber as medium.
Compared with prior art, trunk subsystem improves transmission and the reception mode of signal, and transmits signal by optical networking, it is achieved local closely data relaying and remote data relay.Relaying for in-plant data, relaying can realize the monitoring of data.Owing to this transmission system is transmission based on physical layer, so current mode analog signal being transmitted the most lossless, so the least to line influence own, so in current mode analog signal data proper communication, and control between multiple equipment how convenient to realize condition with carrying when safeguarding.Especially in equipment test operation, owing to our system is the most lossless, the verity of test result therefore can be ensured to a greater extent；The communication of remote current mode analog signal and the monitoring of current mode analog signal can certainly be realized.Transmission range can reach five kilometers.In the case of being indifferent to time delay, farther transmission range can be accomplished.
Accompanying drawing explanation
Fig. 1 provides the structural representation of the transmission system embodiment of current mode analog signal in a kind of private network for the present invention；
Fig. 2 is the structural representation of another embodiment of system shown in Figure 1 embodiment；
Fig. 3 is the structural representation of another embodiment of system shown in Figure 2 embodiment；
Fig. 4 is the another structural representation of system shown in Figure 1 embodiment；
Fig. 5 is another structural representation of system shown in Figure 1 embodiment.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can mutual combination in any.
It should be explicitly made clear at this point, hereafter described private network is private network based on the SDH (SynchronousDigitalHierarchy, SDH) that optical fiber is medium.
Fig. 1 provides the structural representation of the transmission system embodiment of current mode analog signal in a kind of private network for the present invention.System shown in Figure 1 at least two trunk subsystem, wherein said at least two trunk subsystem is connected by optical networking, and each trunk subsystem includes device port 101, the network port the 102, first modular converter 103 and the second modular converter 104, wherein:
Described device port 101, is connected with equipment；
The described network port 102, is connected with described optical networking；
Described first modular converter 103, is connected with described device port and described second modular converter, for when receiving current mode analog signal from described device port, current mode analog signal being converted into digital signal；And, after receiving digital signal from described second modular converter, described digital signal is converted into current mode analog signal, and is sent by device port；
Described second modular converter 104, is connected with described first modular converter and the described network port, for after receiving digital signal from described first modular converter, described digital signal is converted into optical signal, and is sent by the described network port；And, after receiving optical signal from the described network port, described optical signal is converted into digital signal, and sends digital signal to described first modular converter.
Wherein, current mode analog signal has a wide range of applications field as a kind of basic physical signalling, and such as at the temperature-sensitive current that temperature control field is commonly used, the light-dependent current etc. that the most commonly used optical switch uses is all current mode signal.
In actual applications, if the first equipment is to the second equipment sending data, after the first trunk subsystem being connected with the first equipment receives digital signal by device port, convert digital signals into optical signal, and by the network port, optical signal is sent by optical networking, the second trunk subsystem being connected with the second equipment receives this optical signal by network interface, can convert thereof into digital signal, and be sent to the second equipment.In like manner, the second equipment is identical with above-mentioned flow process to the flow process of the first equipment sending data, and here is omitted.
For example, the second modular converter can be AD conversion chip.Sent by optical fiber after converting the data into optical signal after the operations such as the current mode signal on circuit is read by A/D chip, is then controlled by stream, Data Format Transform.During reception, by the data on optical fiber by optical signal to the conversion of digital signal, pass through digital signal the most again to after the conversion of current mode signal, signal is sent with the form of current mode signal.
Unlike transmission system of the prior art, the long-distance transmissions of current mode analog signal is realized by optical fiber, because the light velocity is to be currently known speed the fastest in the world, it is possible to well realize the remote of current mode analog signal, the data transmission of low delay.It addition, the present embodiment is data based on physical layer transmission, data are not resolved, simply the signal on network is transmitted, without concern for the data content of transmission, therefore, it is possible to realize close to lossless transmission.
Fig. 2 is another structural representation of system shown in Figure 1 embodiment.It is shown here only such as lower part, remaining and the content omission of Fig. 1 intersection, wherein system shown in Figure 2 also includes:
Path management subsystem, including:
Configuration module 201, for the bang path that configuration the first equipment and the optical signal that produces alternately of the second equipment are special；
Described optical networking also includes routing subsystem, is connected with described path management subsystem, including:
Logging modle 202, is connected with described configuration module 201, for recording the bang path that between described first equipment and the second equipment, the mutual optical signal produced is special；
Routing module 203, it is connected with described logging modle 202, for only when the optical signal that the optical signal received is mutual generation between described first equipment and the second equipment time, the bang path that between the first equipment and the second equipment, the mutual optical signal produced is special is just used to be transmitted.
The optical signal that wherein the first equipment and the second equipment produce alternately include the first equipment to optical signal produced by the second equipment sending data and the second equipment at least one in optical signal produced by the first equipment sending data.
It should be noted that, bang path herein is not bang path based on address route in prior art, but by the optical signal between the first equipment and the second equipment in optical networking the port information of process, and this paths is to be only limited to when the first equipment and the communication of the second equipment the two equipment use the netting twine being equivalent in prior art between two equipment, herein by this bang path referred to as " virtual netting twine ".Transfer resource on this virtual netting twine uses owing to not transmitted by the signal of other equipment, is only used by the first equipment and the second equipment, and two equipment that reached monopolize the purpose of a transmission lines resource, further ensures the real-time transmission of signal.
For when interconnecting between the multiple stage network equipment, under the conditions of original network design, by configuring one in routing subsystem for the Port Connection Information connecting two equipment, so that it may so that monopolizing one between any two equipment of any two equipment to transmit path.
Owing to the mode of transfer resource exclusive between equipment is realized by path management subsystem configuration, it is not to be between two equipment, to set up an actual physical circuit, during so the correspondence between two equipment changes, can be had only to regenerate the bang path of correspondence by path management subsystem, realize simple, be described as follows:
Fig. 3 is another structural representation of system shown in Figure 2 embodiment.In system shown in Figure 3:
Described path management subsystem, also includes:
Modified module 301, is connected with described configuration module 201, after the correspondence between described first equipment and the second equipment changes, revises the bang path that optical signal mutual between described first equipment and the second equipment is special, obtains revising result；
Described routing subsystem, also includes:
More new module 302, is connected with described modified module and described logging modle, for according to described amendment result, updates the bang path of described logging modle record.
As seen from the above, when changing communication mode between equipment, meet the conversion of communication between devices relation rather than change physical connection circuit with only need to configuring corresponding transmission path just being adapted to property.
Fig. 4 is the another structural representation of system shown in Figure 1 embodiment.System shown in Figure 4 embodiment the most also includes:
Monitoring port 401, is connected with network monitoring center；
Transport module 402, for sending the current mode analog signal obtained, optical signal or digital signal by described monitoring port.
Wherein said transport module can be connected with device port, it is also possible to is connected with the first modular converter, it is also possible to be connected with the network port, and certainly, the signal sent can be current mode analog signal, digital signal, it is also possible to is optical signal.
Owing to described monitoring port and device port and the network port are not same physical port, so the data transmission that the optical signal that sent of transport module or digital signal do not interfere with between equipment, do not result in the conflict of data between equipment, it is ensured that the proper communication between two equipment.
The transmission causing the proper communication between equipment, described monitoring port only to carry out current mode analog signal, optical signal or digital signal by monitoring port feedback data in order to avoid network monitoring center operates.
As seen from the above, by the data obtained on circuit are transferred to another one port, between guarantee equipment on the premise of normal communication, these data are sent an another one or multiple port realize data monitoring.Data are only carried out for monitoring port and sends operation, do not receive the data of this port, thus solve the conflict of data transmission.Owing to data monitoring is also based on the monitoring of physical layer, it is indifferent to data content, so one or more device port that the signal of the network interface that simply will monitor is delivered to specify is to realize data monitoring.
Optionally, described trunk subsystem also includes:
Multiple control ports, each port and a controlled device are connected；
Sending module, is connected with the plurality of control port, sends for sending, to described controlled device, current mode analog signal, optical signal or the digital signal obtained by the plurality of control port simultaneously.
Wherein, described control port only carries out the transmission operation of optical signal or digital signal.
As seen from the above, relay system is while sending signal, also support the transmission of more than a pair port, if this current mode signal is as control signal, the current mode signal of this port is simultaneously communicating to multiple different port simultaneously, an equipment can be realized and control multiple devices simultaneously, and the signal that local device spreads out of also will not be impacted.
Data for current mode signal serial transmission line are transmitted, in order to the signal produced mutual between guarantee equipment at the uniform velocity can transmit in optical networking.The invention provides following scheme, including:
Clock module, for when described trunk subsystem is as the transmitting terminal of signal, controlling described second modular converter, that digital signal is changed frequency is identical to the conversion frequency of optical signal with as corresponding object relay subsystem；Or, when described trunk subsystem is as the receiving terminal of signal, controlling described second modular converter, that optical signal is changed frequency is identical to the conversion frequency of digital signal with as corresponding object relay subsystem.
If the first trunk subsystem is to the second trunk subsystem transmission data, the frequency that second modular converter conversion digital signal in first trunk subsystem becomes optical signal is referred to as sample frequency, it is referred to as going back primary frequency by the frequency that the second trunk subsystem transmitting photo-signal in the second trunk subsystem becomes digital signal, system is used in the present invention signal sampling clock and signals revivification clock are same frequencies, it is possible to ensure that our signal at the uniform velocity transmits.
In sum, by the improvement to relay system pair, and signal is transmitted by optical networking, it is achieved local closely data relaying and remote data relay.Relaying for in-plant data, relaying can realize the monitoring of data.Owing to this transmission system is transmission based on physical layer, so current mode analog signal being transmitted the most lossless, so the least to line influence own, so in current mode analog signal data proper communication, and control between multiple equipment how convenient to realize condition with carrying when safeguarding.Especially in equipment test operation, owing to our system is the most lossless, the verity of test result therefore can be ensured to a greater extent；The communication of remote current mode analog signal and the monitoring of current mode analog signal can certainly be realized.Transmission range can reach five kilometers.In the case of being indifferent to time delay, farther transmission range can be accomplished.
One of ordinary skill in the art will appreciate that all or part of step of above-described embodiment can use computer program flow process to realize, described computer program can be stored in a computer-readable recording medium, described computer program performs (such as system, unit, device etc.) on corresponding hardware platform, upon execution, including one or a combination set of the step of embodiment of the method.
Alternatively, all or part of step of above-described embodiment can also use integrated circuit to realize, and these steps can be fabricated to integrated circuit modules one by one respectively, or the multiple modules in them or step are fabricated to single integrated circuit module realize.So, the present invention is not restricted to the combination of any specific hardware and software.
Each device/functional module/functional unit in above-described embodiment can use general calculating device to realize, and they can concentrate on single calculating device, it is also possible to is distributed on the network that multiple calculating device is formed.
When each device/functional module/functional unit in above-described embodiment is using the form realization of software function module and as independent production marketing or use, can be stored in a computer read/write memory medium.Computer read/write memory medium mentioned above can be read only memory, disk or CD etc..
The above; being only the detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in or replace, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain described in claim.
Claims (8)
1. the transmission system of current mode analog signal in a private network, it is characterized in that, including at least two trunk subsystem, wherein said at least two trunk subsystem is connected by optical networking, each trunk subsystem includes device port, the network port, the first modular converter and the second modular converter, wherein:
Described device port, is connected with equipment；
The described network port, is connected with described optical networking；
Described first modular converter, is connected with described device port and described second modular converter, for when receiving current mode analog signal from described device port, current mode analog signal being converted into digital signal；And, after receiving digital signal from described second modular converter, described digital signal is converted into current mode analog signal, and is sent by device port；
Described second modular converter, is connected with described first modular converter and the described network port, for after receiving digital signal from described first modular converter, described digital signal is converted into optical signal, and is sent by the described network port；And, after receiving optical signal from the described network port, described optical signal is converted into digital signal, and sends digital signal to described first modular converter；
Also include:
Path management subsystem, including:
Configuration module, for the bang path that configuration the first equipment and the optical signal that produces alternately of the second equipment are special；
Described optical networking also includes routing subsystem, is connected with described path management subsystem, including:
Logging modle, is connected with described configuration module, for recording the bang path that between described first equipment and the second equipment, the mutual optical signal produced is special；
Routing module, it is connected with described logging modle, for only when the optical signal that the optical signal received is mutual generation between described first equipment and the second equipment time, the bang path that between the first equipment and the second equipment, the mutual optical signal produced is special is just used to be transmitted.
Transmission system the most according to claim 1, it is characterised in that:
Described path management subsystem, also includes:
Modified module, is connected with described configuration module, after the correspondence between described first equipment and the second equipment changes, revises the bang path that optical signal mutual between described first equipment and the second equipment is special, obtains revising result；
Described routing subsystem, also includes:
More new module, is connected with described modified module and described logging modle, for according to described amendment result, updates the bang path of described logging modle record.
Transmission system the most according to claim 1, it is characterised in that described trunk subsystem also includes:
Monitoring port, is connected with network monitoring center；
Transport module, for sending the current mode analog signal obtained, optical signal or digital signal by described monitoring port.
Transmission system the most according to claim 3, it is characterised in that described monitoring port only carries out the transmission operation of current mode analog signal, optical signal or digital signal.
Transmission system the most according to claim 1, it is characterised in that described trunk subsystem also includes:
Multiple control ports, each port and a controlled device are connected；
Sending module, is connected with the plurality of control port, for being sent current mode analog signal, optical signal or the digital signal obtained to described controlled device by the plurality of control port simultaneously.
Transmission system the most according to claim 5, it is characterised in that described control port only carries out the transmission operation of optical signal or digital signal.
Transmission system the most according to claim 1, it is characterised in that described trunk subsystem also includes:
Clock module, for when described trunk subsystem is as the transmitting terminal of signal, controlling described second modular converter, that digital signal is changed frequency is identical to the conversion frequency of optical signal with as corresponding object relay subsystem；Or, when described trunk subsystem is as the receiving terminal of signal, controlling described second modular converter, that optical signal is changed frequency is identical to the conversion frequency of digital signal with as corresponding object relay subsystem.
8. according to the arbitrary described transmission system of claim 1 to 7, it is characterised in that described private network is private network based on the SDH (SDH) with optical fiber as medium.
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| CN201110367785.2A CN103124194B (en) | 2011-11-18 | 2011-11-18 | The transmission system of current mode analog signal in private network |
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| US6178170B1 (en) * | 1997-05-13 | 2001-01-23 | Sprint Communications Company, L. P. | System and method for transporting a call |
| JP2004328173A (en) * | 2003-04-23 | 2004-11-18 | Nec Corp | Network, repeating installation, and path management method used therefor |
| CN101221693A (en) * | 2007-12-11 | 2008-07-16 | 秦一涛 | Distributed optical fiber temperature monitoring system |
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| US20040102874A1 (en) * | 2002-11-27 | 2004-05-27 | Crosby Philip S. | Method and apparatus for controlling an optical transponder |
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Patent Citations (3)
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| US6178170B1 (en) * | 1997-05-13 | 2001-01-23 | Sprint Communications Company, L. P. | System and method for transporting a call |
| JP2004328173A (en) * | 2003-04-23 | 2004-11-18 | Nec Corp | Network, repeating installation, and path management method used therefor |
| CN101221693A (en) * | 2007-12-11 | 2008-07-16 | 秦一涛 | Distributed optical fiber temperature monitoring system |
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