CN217590806U - Signal transmission system based on photoelectric conversion - Google Patents
Signal transmission system based on photoelectric conversion Download PDFInfo
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- CN217590806U CN217590806U CN202220996495.8U CN202220996495U CN217590806U CN 217590806 U CN217590806 U CN 217590806U CN 202220996495 U CN202220996495 U CN 202220996495U CN 217590806 U CN217590806 U CN 217590806U
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Abstract
The utility model discloses a signal transmission system based on photoelectric conversion, which comprises a central communication node and a plurality of distributed communication nodes, wherein the central communication node is respectively connected with each distributed communication node; each distributed communication node comprises a microprocessor, an optical transmission switch, a first photoelectric conversion module, a first optical fiber port, a wireless transmission switch, a first wireless communication module, a signal intensity detection module and a switch control module; the signal intensity detection module is used for detecting the signal intensity between the first wireless communication module and the central communication node, and the output end of the signal intensity detection module is connected with the switch control module; and the switch control module is respectively connected with the control ends of the wireless transmission switch and the optical transmission switch. The utility model discloses can be when wireless communication's signal strength is not enough, automatic switch to carries out signal transmission through photoelectric conversion, has certain disaster tolerance performance to can guarantee the normal work of system.
Description
Technical Field
The present invention relates to signal transmission, and more particularly to a signal transmission system based on photoelectric conversion.
Background
Electromagnetic waves are used as carriers of information transmission, become a main means for releasing and acquiring information in the present human society, and are widely applied to the field of wireless transmission, such as radio communication, terrestrial communication and the like, but at present, when wireless transmission is performed, the quality of signal transmission depends on the signal strength between two communication parties, when the signal strength of the two communication parties is insufficient, a great deal of adverse effects are brought to transmission, particularly in a transmission system which is provided with a central communication node and a plurality of distributed communication nodes, and the distributed communication nodes are only connected with the central communication node, if only one wireless communication module node of one distributed communication fails, other distributed communication nodes can still work normally, but as long as the wireless transmission of the central communication node fails, the whole system is seriously affected and even broken down.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides a signal transmission system based on photoelectric conversion, can be when radio communication's signal strength is not enough, and the automatic switch-over carries out signal transmission through photoelectric conversion, has certain disaster recovery performance to can guarantee the normal work of system.
The purpose of the utility model is realized through the following technical scheme: a signal transmission system based on photoelectric conversion comprises a central communication node and a plurality of distributed communication nodes, wherein the central communication node is respectively connected with each distributed communication node;
each distributed communication node comprises a microprocessor, an optical transmission switch, a first photoelectric conversion module, a first optical fiber port, a wireless transmission switch, a first wireless communication module, a signal intensity detection module and a switch control module;
in each distributed communication node, the microprocessor is respectively connected with a wireless transmission switch and an optical transmission switch, the wireless transmission switch is connected with a first wireless communication module, and the optical transmission switch is connected with a first optical fiber port through a first photoelectric conversion module; the first wireless communication module establishes wireless communication with the central communication node, and the first optical fiber port is connected with the central communication node through an optical fiber; the signal intensity detection module is used for detecting the signal intensity between the first wireless communication module and the central communication node, and the output end of the signal intensity detection module is connected with the switch control module; and the switch control module is respectively connected with the control ends of the wireless transmission switch and the optical transmission switch.
The switch control module comprises a reference signal source, a comparator and a level inverter; the output end of the comparator is connected with the control end of the wireless transmission switch, and the output end of the comparator is also connected with the control end of the optical transmission switch through the level inverter.
The central communication node comprises a central processor, a photoelectric conversion assembly, an optical fiber port group and a second wireless communication module; the central processing unit is connected with the optical fiber port group through a photoelectric component and is also connected with the second wireless communication module; the second wireless communication module is respectively connected with the first wireless communication module in each distributed communication node through a wireless network; the optical fiber port group is respectively connected with the first optical fiber port in each distributed communication node through an optical fiber.
The beneficial effects of the utility model are that: the utility model discloses can be when wireless communication's signal strength is not enough, automatic switch to carries out signal transmission through photoelectric conversion, has certain disaster tolerance performance to can guarantee the normal work of system.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
As shown in fig. 1, a signal transmission system based on photoelectric conversion is characterized in that: the system comprises a central communication node and a plurality of distributed communication nodes, wherein the central communication node is respectively connected with each distributed communication node;
each distributed communication node comprises a microprocessor, an optical transmission switch, a first photoelectric conversion module, a first optical fiber port, a wireless transmission switch, a first wireless communication module, a signal intensity detection module and a switch control module;
in each distributed communication node, the microprocessor is respectively connected with a wireless transmission switch and an optical transmission switch, the wireless transmission switch is connected with a first wireless communication module, and the optical transmission switch is connected with a first optical fiber port through a first photoelectric conversion module; the first wireless communication module establishes wireless communication with the central communication node, and the first optical fiber port is connected with the central communication node through an optical fiber; the signal intensity detection module is used for detecting the signal intensity between the first wireless communication module and the central communication node, and the output end of the signal intensity detection module is connected with the switch control module; and the switch control module is respectively connected with the control ends of the wireless transmission switch and the optical transmission switch.
In the embodiment of the present application, the optical transmission switch and the wireless transmission switch are both MOS analog switches. The switch control module comprises a reference signal source, a comparator and a level turner; the in-phase input end of the comparator is connected with the output end of the signal intensity detection module, the anti-phase input end of the comparator is connected with the reference signal source, the output end of the comparator is connected with the control end of the wireless transmission switch, and the output end of the comparator is further connected with the control end of the optical transmission switch through the level inverter.
In an embodiment of the present application, the central communication node includes a central processing unit, a photoelectric conversion module, an optical fiber port group, and a second wireless communication module; the central processing unit is connected with the optical fiber port group through a photoelectric assembly and is also connected with the second wireless communication module; the second wireless communication module is respectively connected with the first wireless communication module in each distributed communication node through a wireless network; the optical fiber port group is respectively connected with the first optical fiber port in each distributed communication node through an optical fiber.
The optical fiber port group comprises a plurality of second optical fiber ports, and the number of the second optical fiber ports is the same as that of the distributed communication nodes and corresponds to that of the distributed communication nodes one by one; each second fibre port is connected by an optical fibre to a first fibre port in a corresponding distributed communications node.
The photoelectric conversion assembly comprises a plurality of second photoelectric converters, and the number of the second photoelectric converters is the same as that of the second optical fiber ports, and the second photoelectric converters are in one-to-one correspondence with the second optical fiber ports; one end of each photoelectric converter is connected with the corresponding second optical fiber port, and the second end of each photoelectric converter is connected with the central processing unit.
In the above embodiment, for any distributed communication node, the signal of the reference signal source is equivalent to a signal threshold, when the signal strength detected by the signal strength detection module exceeds the threshold, the non-inverting input of the comparator is greater than the inverting input, at this time, the comparator outputs a high level to control the wireless transmission switch to be closed, at this time, the output high level obtains a low level after level inversion, the optical transmission switch is controlled to be opened, and at this time, the current distributed communication node and the central communication node communicate with each other through the wireless network; on the contrary, when the signal intensity detected by the signal intensity detection module is lower than the threshold value, the in-phase input of the comparator is smaller than the reverse-phase input, the comparator outputs a low level to control the wireless transmission switch to be switched off, the output low level is subjected to level inversion to obtain a high level to control the optical transmission switch to be switched on, and at the moment, the current distributed communication node and the central communication node are communicated through the optical fiber; in the embodiment of the application, the signal strength detection module outputs the detection result externally in a voltage form, the reference signal source adopts a reference voltage source, and the comparator adopts a voltage comparator.
In the actual working process, if the first wireless communication module of a certain distributed communication node fails to cause signal intensity reduction, if the signal intensity is reduced to be lower than a signal output by a reference signal source, the photoelectric conversion channel is switched, and then communication is carried out through optical fibers; if the second wireless communication module in the central communication node fails to cause signal intensity reduction, each distributed communication node automatically switches to a photoelectric converter according to real-time signal intensity when the signal intensity is reduced to be lower than a signal output by a reference signal source, and then carries out communication through optical fibers; the utility model can automatically switch to signal transmission through photoelectric conversion by each distributed communication node when the signal intensity of wireless communication is insufficient; the disaster recovery performance is certain; meanwhile, if the signal intensity caused by non-fault reasons is temporarily reduced to be lower than the output of the remembered signal, real-time switching can be performed, and normal work of the system can be guaranteed.
While there has been shown and described what is considered to be a preferred embodiment of the invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the invention as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (6)
1. A signal transmission system based on photoelectric conversion is characterized in that: the system comprises a central communication node and a plurality of distributed communication nodes, wherein the central communication node is respectively connected with each distributed communication node;
each distributed communication node comprises a microprocessor, an optical transmission switch, a first photoelectric conversion module, a first optical fiber port, a wireless transmission switch, a first wireless communication module, a signal intensity detection module and a switch control module;
in each distributed communication node, the microprocessor is respectively connected with a wireless transmission switch and an optical transmission switch, the wireless transmission switch is connected with a first wireless communication module, and the optical transmission switch is connected with a first optical fiber port through a first photoelectric conversion module; the first wireless communication module establishes wireless communication with the central communication node, and the first optical fiber port is connected with the central communication node through an optical fiber; the signal intensity detection module is used for detecting the signal intensity between the first wireless communication module and the central communication node, and the output end of the signal intensity detection module is connected with the switch control module; and the switch control module is respectively connected with the control ends of the wireless transmission switch and the optical transmission switch.
2. The signal transmission system based on photoelectric conversion according to claim 1, wherein: the optical transmission switch and the wireless transmission switch are both MOS analog switches.
3. The signal transmission system based on photoelectric conversion according to claim 1, wherein: the switch control module comprises a reference signal source, a comparator and a level inverter; the output end of the comparator is connected with the control end of the wireless transmission switch, and the output end of the comparator is also connected with the control end of the optical transmission switch through the level inverter.
4. The signal transmission system based on photoelectric conversion according to claim 1, wherein: the central communication node comprises a central processor, a photoelectric conversion assembly, an optical fiber port group and a second wireless communication module; the central processing unit is connected with the optical fiber port group through a photoelectric assembly and is also connected with the second wireless communication module; the second wireless communication module is respectively connected with the first wireless communication module in each distributed communication node through a wireless network; the optical fiber port group is respectively connected with the first optical fiber port in each distributed communication node through an optical fiber.
5. The signal transmission system based on photoelectric conversion according to claim 4, wherein: the optical fiber port group comprises a plurality of second optical fiber ports, and the second optical fiber ports are the same in number as the distributed communication nodes and are in one-to-one correspondence with the distributed communication nodes; each second fibre port is connected by an optical fibre to a first fibre port in a corresponding distributed communications node.
6. The signal transmission system based on photoelectric conversion according to claim 5, wherein: the photoelectric conversion assembly comprises a plurality of second photoelectric converters, and the number of the second photoelectric converters is the same as that of the second optical fiber ports, and the second photoelectric converters correspond to the second optical fiber ports one by one; one end of each photoelectric converter is connected with the corresponding second optical fiber port, and the second end of each photoelectric converter is connected with the central processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220996495.8U CN217590806U (en) | 2022-04-24 | 2022-04-24 | Signal transmission system based on photoelectric conversion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220996495.8U CN217590806U (en) | 2022-04-24 | 2022-04-24 | Signal transmission system based on photoelectric conversion |
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| Publication Number | Publication Date |
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| CN217590806U true CN217590806U (en) | 2022-10-14 |
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| CN202220996495.8U Active CN217590806U (en) | 2022-04-24 | 2022-04-24 | Signal transmission system based on photoelectric conversion |
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