CN212012661U - Optical fiber repeater far-end machine - Google Patents
Optical fiber repeater far-end machine Download PDFInfo
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- CN212012661U CN212012661U CN202021061091.7U CN202021061091U CN212012661U CN 212012661 U CN212012661 U CN 212012661U CN 202021061091 U CN202021061091 U CN 202021061091U CN 212012661 U CN212012661 U CN 212012661U
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Abstract
A remote end machine of an optical fiber repeater comprises a photoelectric conversion and signal processing module, a group carrier radio frequency signal conversion module and a group carrier radio frequency signal conversion module, wherein the photoelectric conversion and signal processing module is connected with an optical signal input interface, inputs a plurality of optical signals and converts the optical signals into the group carrier radio frequency signals; the power amplification module is connected with the photoelectric conversion and signal processing module and the radio frequency output interface, receives the group carrier radio frequency signal sent by the photoelectric conversion and signal processing module, and outputs the group carrier radio frequency signal from the radio frequency output interface after amplification; the main control module is respectively connected with the photoelectric conversion and signal processing module, the power amplification module and the monitoring unit; and the monitoring unit receives the data signal and the audio signal of the near-end machine and realizes data communication with the photoelectric conversion and signal processing module and the main control module. The utility model discloses at the inside frequency modulation demodulation module that increases of remote terminal, can receive monitoring signal cover field intensity, SNR to the signal that local repeater sent through receiving antenna to restore into frequency modulation audio signal through frequency modulation demodulation module and carry out monitoring signal content, tone quality and continuity.
Description
Technical Field
The utility model belongs to the technical field of the optic fibre repeater, concretely relates to optic fibre repeater distal end machine.
Background
The optical fiber repeater mainly comprises an optical near-end machine, an optical fiber and an optical far-end machine. Both the optical near-end machine and the optical far-end machine include a radio frequency unit (RF unit) and an optical unit. After being coupled out from the base station, the wireless signals enter the optical near-end machine, the electric signals are converted into optical signals through electro-optic conversion, the optical signals are input to the optical fibers from the optical near-end machine and are transmitted to the optical far-end machine through the optical fibers, the optical far-end machine converts the optical signals into the electric signals and enters the RF unit for amplification, and the signals are sent to the transmitting antenna after being amplified to cover a target area. The near-end machine has the functions of local signal quality monitoring and monitoring. The remote machine is not equipped with a corresponding feedback function.
Disclosure of Invention
The utility model discloses a solve above-mentioned problem, provide an optic fibre repeater remote machine with monitoring function.
The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:
a remote end machine of an optical fiber repeater comprises an optical signal input interface, a radio frequency output interface, a photoelectric conversion and signal processing module, a power amplification module, a main control module and a monitoring unit;
the photoelectric conversion and signal processing module is connected with the optical signal input interface, inputs a plurality of optical signals and converts the optical signals into group carrier radio frequency signals;
the power amplification module is connected with the photoelectric conversion and signal processing module and the radio frequency output interface, receives the group carrier radio frequency signal sent by the photoelectric conversion and signal processing module, and outputs the group carrier radio frequency signal from the radio frequency output interface after amplification;
the main control module is respectively connected with the photoelectric conversion and signal processing module, the power amplification module and the monitoring unit;
and the monitoring unit receives the data signal and the audio signal of the near-end machine and realizes data communication with the photoelectric conversion and signal processing module and the main control module.
Optionally, the monitoring unit includes a receiving antenna, a frequency modulation demodulation module, an audio compression coding module, and a switch; wherein the content of the first and second substances,
the receiving antenna is used for receiving the data signal and the audio signal transmitted by the near-end transmitter;
the frequency modulation demodulation module is connected with the receiving antenna, receives the data signal and the audio signal of the near-end machine, demodulates the audio signal into audio and outputs the audio signal to the audio compression coding module;
the audio compression coding module is connected with the frequency modulation demodulation module and the switch, and transmits the audio to the switch after compression coding;
the switch comprises an external output network port, and the switch is respectively in communication connection with the audio compression coding module, the frequency modulation demodulation module, the main control module and the photoelectric conversion and signal processing module.
Optionally, the switch is in communication connection with the main control module, the photoelectric conversion and signal processing module, the audio compression encoding module and the frequency modulation demodulation module through a TCP/IP protocol interface respectively.
Optionally, the optical signal input interface is a dual-channel optical signal input interface, and the photoelectric conversion and signal processing module includes a dual-channel radio frequency output interface.
Optionally, the device further comprises a band-pass filter and a low-pass filter, the photoelectric conversion and signal processing module, the band-pass filter, the power amplification module and the low-pass filter are in communication connection in sequence, and the low-pass filter is connected with the radio frequency output interface.
Optionally, the radio frequency output interface is connected to a leaky cable or a miniaturized antenna for wireless transmission.
Optionally, the main control module and the power amplification module perform data transmission of analog-to-digital conversion and digital-to-analog conversion.
Optionally, the main control module and the photoelectric conversion and signal processing module are connected through an RS232 interface.
Optionally, the optical output end is connected to an optical signal input port of a repeater, and the optical power range of the repeater is (-8 to-30) dBm.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses increased frequency modulation demodulation module in remote terminal equipment inside, can receive monitoring signal cover field intensity, SNR through the signal that receiving antenna sent local repeater to restore into frequency modulation audio signal through frequency modulation demodulation module and monitor signal content, tone quality and continuity.
Drawings
FIG. 1 is a block diagram of the structure of an embodiment 1 of a remote end of a fiber optic repeater;
FIG. 2 is a block diagram of the structure of embodiment 2 of a remote unit of a fiber-optic repeater.
Detailed Description
To make the objects, aspects and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description, it being understood that these descriptions are only illustrative and do not limit the scope of the present invention. Moreover, in the following description, second speed for well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present invention.
A remote end machine of an optical fiber repeater comprises an optical signal input interface, a radio frequency output interface, a photoelectric conversion and signal processing module, a power amplification module, a main control module and a monitoring unit;
the photoelectric conversion and signal processing module is connected with the optical signal input interface, inputs a plurality of optical signals and converts the optical signals into group carrier radio frequency signals;
the power amplification module is connected with the photoelectric conversion and signal processing module and the radio frequency output interface, receives the group carrier radio frequency signal sent by the photoelectric conversion and signal processing module, and outputs the group carrier radio frequency signal from the radio frequency output interface after amplification;
the main control module is respectively connected with the photoelectric conversion and signal processing module, the power amplification module and the monitoring unit;
and the monitoring unit receives the data signal and the audio signal of the near-end machine and realizes data communication with the photoelectric conversion and signal processing module and the main control module. The monitoring unit transmits the data signal and the audio signal of the near-end machine to the photoelectric conversion and signal processing module for processing.
Specifically, the monitoring unit comprises a receiving antenna, a frequency modulation demodulation module, an audio compression coding module and a switch; the receiving antenna receives a data signal and an audio signal transmitted by the near-end transmitter; the frequency modulation demodulation module is connected with the receiving antenna, receives the data signal and the audio signal of the near-end machine, demodulates the audio signal into audio and outputs the audio signal to the audio compression coding module; the audio compression coding module is connected with the frequency modulation demodulation module and the switch, and transmits the audio to the switch after compression coding;
the switch comprises an external output network port, and the switch is respectively in communication connection with the audio compression coding module, the frequency modulation demodulation module, the main control module and the photoelectric conversion and signal processing module. The switch is in communication connection with the main control module, the photoelectric conversion and signal processing module, the audio compression coding module and the frequency modulation demodulation module through a TCP/IP protocol interface.
The switch realizes local network output through an external output network port, and simultaneously transmits all monitored data signals and audio signals of the near-end machine and all working states of the far-end machine equipment back to the near-end machine or the monitoring center through the photoelectric conversion and signal processing module.
The optical signal input interface is a double-path optical signal input interface, and the radio frequency output interface is a double-path radio frequency output interface. The radio frequency output interface is connected with a leaky cable or a miniaturized antenna for wireless transmission.
The main control module and the power amplification module carry out data transmission of analog-digital and digital-analog conversion.
The main control module is connected with the photoelectric conversion and signal processing module through an RS232 interface.
The power supply also comprises a switching power supply which outputs 5V or 12V or 48V power supply
Furthermore, the main control module is an ARM main control module, and the power amplification module is an RF linear amplification module.
Furthermore, an outdoor unit part of the remote end machine of the optical fiber repeater adopts a cold-rolled sheet plastic-spraying totally-enclosed waterproof design. The remote terminal equipment naturally radiates heat, and all input and output interfaces are connected and led out from the rear panel.
Example 2:
fig. 2 shows another embodiment of the remote end of the optical fiber repeater, which further includes a band-pass filter and a low-pass filter, wherein the photoelectric conversion and signal processing module, the band-pass filter, the power amplification module and the low-pass filter are sequentially connected in communication, and the low-pass filter is connected to the radio frequency output interface. The main control module is respectively connected with the photoelectric conversion and signal processing module and the power amplification module.
The band-pass filter mainly filters out-of-band clutter of 87-108MHz generated by the optical module. The low-pass filter mainly filters multiple harmonic waves above 108MHZ generated after amplification of the power amplifier.
It should be noted that:
while the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
In addition, it should be noted that the specific embodiments described in the present specification may differ in the shape of the components, the names of the components, and the like. All equivalent or simple changes made according to the structure, characteristics and principle of the inventive concept are included in the protection scope of the invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (9)
1. A remote end machine of an optical fiber repeater is characterized by comprising an optical signal input interface, a radio frequency output interface, a photoelectric conversion and signal processing module, a power amplification module, a main control module and a monitoring unit;
the photoelectric conversion and signal processing module is connected with the optical signal input interface, inputs a plurality of optical signals and converts the optical signals into group carrier radio frequency signals;
the power amplification module is connected with the photoelectric conversion and signal processing module and the radio frequency output interface, receives the group carrier radio frequency signal sent by the photoelectric conversion and signal processing module, and outputs the group carrier radio frequency signal from the radio frequency output interface after amplification;
the main control module is respectively connected with the photoelectric conversion and signal processing module, the power amplification module and the monitoring unit;
and the monitoring unit receives the data signal and the audio signal of the near-end machine and realizes data communication with the photoelectric conversion and signal processing module and the main control module.
2. The remote optical fiber repeater according to claim 1, wherein the monitoring unit comprises a receiving antenna, a frequency modulation demodulation module, an audio compression coding module and a switch; wherein the content of the first and second substances,
the receiving antenna is used for receiving the data signal and the audio signal transmitted by the near-end transmitter;
the frequency modulation demodulation module is connected with the receiving antenna, receives the data signal and the audio signal of the near-end machine, demodulates the audio signal into audio and outputs the audio signal to the audio compression coding module;
the audio compression coding module is connected with the frequency modulation demodulation module and the switch, and transmits the audio to the switch after compression coding;
the switch comprises an external output network port, and the switch is respectively in communication connection with the audio compression coding module, the frequency modulation demodulation module, the main control module and the photoelectric conversion and signal processing module.
3. The remote optical fiber repeater according to claim 2, wherein the switch is in communication connection with the main control module, the photoelectric conversion and signal processing module, the audio compression coding module and the fm demodulation module through a TCP/IP protocol interface respectively.
4. The remote optical fiber repeater according to claim 1, wherein said optical-to-electrical conversion and signal processing module comprises a dual-channel rf output interface, and said power amplification module is a dual-channel power amplification module.
5. The remote end of an optical fiber repeater according to claim 1, further comprising a band-pass filter and a low-pass filter, wherein the photoelectric conversion and signal processing module, the band-pass filter, the power amplification module and the low-pass filter are sequentially connected in communication, and the low-pass filter is connected to a radio frequency output interface.
6. The remote optical repeater according to claim 1 or 4, wherein the RF output interface is connected to a leaky cable or a miniaturized antenna for wireless transmission.
7. The remote fiber repeater according to claim 1, wherein said main control module and said power amplification module perform data transmission of analog-to-digital conversion and digital-to-analog conversion.
8. The remote optical fiber repeater according to claim 1, wherein said main control module and said optical-to-electrical conversion and signal processing module are connected through an RS232 interface.
9. The remote fiber repeater according to claim 1, wherein said optical output port is connected to an optical signal input port of the repeater, and the optical power range of the repeater input is (-8 to-30) dBm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021061091.7U CN212012661U (en) | 2020-06-10 | 2020-06-10 | Optical fiber repeater far-end machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021061091.7U CN212012661U (en) | 2020-06-10 | 2020-06-10 | Optical fiber repeater far-end machine |
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| Publication Number | Publication Date |
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| CN212012661U true CN212012661U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021061091.7U Active CN212012661U (en) | 2020-06-10 | 2020-06-10 | Optical fiber repeater far-end machine |
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| CN (1) | CN212012661U (en) |
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