CN111770398A - Optical fiber-to-desktop communication system with sensing and monitoring functions - Google Patents

Optical fiber-to-desktop communication system with sensing and monitoring functions Download PDF

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CN111770398A
CN111770398A CN202010589522.5A CN202010589522A CN111770398A CN 111770398 A CN111770398 A CN 111770398A CN 202010589522 A CN202010589522 A CN 202010589522A CN 111770398 A CN111770398 A CN 111770398A
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sensing
optical fiber
fiber
optical
tail
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易山韬
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Wuhan Yiwang Wanlian Technology Co ltd
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Wuhan Yiwang Wanlian Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
    • G01D5/35338—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using other arrangements than interferometer arrangements
    • G01D5/35354—Sensor working in reflection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/255—Splicing of light guides, e.g. by fusion or bonding
    • G02B6/2551—Splicing of light guides, e.g. by fusion or bonding using thermal methods, e.g. fusion welding by arc discharge, laser beam, plasma torch
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/4471—Terminating devices ; Cable clamps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0083—Testing; Monitoring

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

The invention discloses an optical fiber-to-desktop communication system with a sensing monitoring function, which comprises OLT (optical line terminal) equipment, a light splitter, an optical fiber direct melting box and a plurality of ONU (optical network unit) equipment, wherein a downlink interface of the light splitter is directly connected with an uplink interface of each ONU equipment one-to-one optical fiber, the system also comprises a front end sensing module and a tail end sensing module which is in one-to-one correspondence with each ONU equipment, the front end sensing module is arranged at the near end of the OLT equipment and sequences the tail end sensing modules according to preset sensing monitoring requirements, an outgoing sensing optical fiber of the front end sensing module is welded with an outgoing sensing optical fiber of a first tail end sensing module through the optical fiber direct melting box, and a loop sensing optical fiber of the current tail end sensing module is welded with an outgoing sensing optical fiber of a next tail end sensing module through the monitoring optical fiber direct melting box according to the sequencing sequence, aiming at solving the technical problem of waste of link resources caused by a plurality of direct connection point detection equipment in a communication system from the optical fiber to the desktop And (5) problems are solved.

Description

Optical fiber-to-desktop communication system with sensing and monitoring functions
Technical Field
The invention belongs to the field of optical fiber communication network architecture, and particularly relates to an optical fiber-to-desktop communication system with a sensing monitoring function.
Background
Optical fiber sensing, including both sensing and transmission of external signals (being measured). The sensing (or sensitivity) means that the external signal changes the physical characteristic parameters of the light wave transmitted in the optical fiber according to the change rule, such as intensity (power), wavelength, frequency, phase and polarization state, and the change of the measured light parameter is the change of the "sensing" external signal. This "perception" is essentially the real-time modulation of the light wave propagating in the fiber by the external signal. The transmission means that the optical fiber transmits the light wave modulated by the external signal to the optical detector for detection, extracts the external signal from the light wave and processes data, i.e. demodulates, as required. Thus, the optical fiber sensing technology includes both modulation and demodulation technologies, i.e., a modulation technology (or loading technology) how an external signal (measured) modulates an optical wave parameter in an optical fiber and a demodulation technology (or detection technology) how the external signal (measured) is extracted from the modulated optical wave. There are hundreds of existing optical fiber sensing technologies, and physical quantities such as temperature, pressure, flow, displacement, vibration, rotation, bending, liquid level, velocity, acceleration, sound field, current, voltage, magnetic field, radiation, etc. realize sensing with different performances.
Currently, Fiber To The Desktop (FTTD) uses optical Fiber To replace The traditional network cable (such as category 6 cable) To extend The network To The user terminal, so that The user terminal can access The network through The optical Fiber in The whole process. A typical fiber-to-desktop system disclosed in patent document CN109951231 includes an OLT device, an optical splitter, a fiber direct melting box, and a plurality of ONU devices, where the optical splitter is disposed at a proximal end of the OLT device, the optical splitter is connected to the fiber direct melting box through a communication micro cable, and the fiber direct melting box is connected to the plurality of ONU devices through the communication micro cable, so as to implement one-to-one optical fiber direct connection between a downlink interface of the optical splitter and an uplink interface of each ONU device. For a complex network, a one-level light splitting mode is adopted in the scheme, and the downlink interface of the light splitter is directly connected with the uplink interface of the ONU equipment in a one-to-one mode, so that routing equipment or multi-level light splitter equipment of a network node is omitted, therefore, the reliability of the network is prevented from being influenced by the fault of the node equipment, and meanwhile, the network troubleshooting is simplified, and the experience of a terminal user is improved. The optical splitter is arranged at the near end of the OLT device, namely the connecting line between the OLT device and the optical splitter, is directly connected within a reachable distance range, the PON port of the OLT device and the corresponding splitting ratio thereof can be reasonably configured, namely the splitting ratio of the PON port of the OLT device corresponding to the interface thereof can be divided according to the service type of the downstream application terminal of the ONU device, so that the network terminal of the communication system can be reasonably distributed and managed.
However, for the fiber to desktop system with the above structure, the sensing link of the whole all-fiber network is set on the basis, referring to the connection manner between the ONU device and the OLT device in the fiber to desktop system, because there are a plurality of monitoring points that need to be set, if a single monitoring point is directly connected to the corresponding detection device after being transited by the intermediate device, there are how many sensing links on the trunk links exist at how many monitoring points, although the cable of the trunk links can be realized by a multi-core micro-cable, if the maximum core number of a micro-cable can reach 288 cores or even more, the scheme of directly connecting the detection device with a plurality of monitoring points will inevitably generate the sensing link monitoring of a plurality of trunk links, the sensing link monitoring of a plurality of trunk links will inevitably cause the waste of the trunk link resources, and at the same time, the existence of a plurality of trunk links interacts with the detection device, communication redundancy of the detection device is inevitably caused, thereby affecting monitoring efficiency.
Disclosure of Invention
In view of the above defects or needs for improvement in the prior art, the present invention provides a fiber-to-desktop communication system including sensing monitoring, and aims to solve the technical problem of waste of backbone link resources caused by direct connection of detection devices to multiple monitoring points in the fiber-to-desktop communication system.
In order to achieve the above object, according to one aspect of the present invention, there is provided a fiber-to-desktop communication system with a sensing monitoring function, comprising an OLT device, an optical splitter, a fiber direct melting tank and a plurality of ONU devices, wherein the optical splitter is disposed at a proximal end of the OLT device, and is connected to the fiber direct melting tank through an optical fiber to transmit signals, the fiber direct melting tank is connected to the plurality of ONU devices through an optical fiber to transmit signals, a downlink interface of the optical splitter is directly connected to an uplink interface of each ONU device one-to-one through the optical fiber,
the system also comprises a front-end sensing module and a tail-end sensing module which corresponds to each ONU device one by one, wherein the front-end sensing module is arranged at the near end of the OLT device and is directly welded with a tail-end outgoing sensing fiber corresponding to a tail-end sensing module in an optical fiber direct melting box through a sensing fiber, the tail-end sensing module is simultaneously and directly welded with the tail-end outgoing sensing fiber of the next tail-end sensing module in the optical fiber direct melting box through another sensing fiber, the tail-end outgoing sensing fiber of the other tail-end sensing module is sequentially and directly welded with the tail-end outgoing sensing fiber of the previous tail-end sensing module in the optical fiber direct melting box, the tail-end outgoing sensing fiber of the other tail-end sensing module is directly welded with the tail-end outgoing sensing fiber of the next tail-end sensing module in the optical fiber direct melting box, and light for sensing is formed by the front-end outgoing sensing fiber, the tail-end outgoing sensing fiber of each tail-end sensing module and the tail-end outgoing sensing fiber of each tail-end sensing module A fiber sensing link.
As a further improvement of the invention, the front-end outgoing sensing optical fiber and the transmission optical fiber between the optical splitter and the optical fiber direct melting box are integrated into a bundle of optical fibers, or the front-end outgoing sensing optical fiber is a spare optical fiber or a redundant optical fiber in the transmission optical fiber between the optical splitter and the optical fiber direct melting box;
preferably, the transmission fiber between the optical splitter and the optical fiber direct melting box is a multi-core micro-cable fiber, and the front-end outgoing sensing fiber is one or more cores of the multi-core micro-cable fiber except the transmission fiber, so as to form sensing monitoring of a branch link between the optical fiber direct melting box and the ONU device.
As a further improvement of the invention, the tail end outgoing sensing optical fiber and the tail end loop sensing optical fiber which are mutually welded and connected among the tail end sensing modules and the transmission optical fiber between the corresponding ONU equipment and the floor optical fiber direct melting box are integrated into a bundle of optical fibers, or the tail end outgoing sensing optical fiber and the tail end loop sensing optical fiber which are mutually welded and connected among the tail end sensing modules are spare optical fibers or redundant optical fibers in the transmission optical fiber between the ONU equipment and the optical fiber direct melting box;
preferably, the transmission fiber between the ONU device and the fiber direct melting tank is a multi-core micro-cable fiber, and the end outgoing sensing fiber and the end return sensing fiber, which are fusion-connected to each other between the end sensing modules, are one or more cores of the multi-core micro-cable fiber except for the transmission fiber.
As a further improvement of the invention, the front-end sensing module is also provided with a loop sensing optical fiber which is connected with the loop sensing optical fiber of the last tail-end sensing module in a fiber direct melting box in a welding way.
As a further improvement of the invention, the loop sensing optical fiber of the front-end sensing module and the transmission optical fiber between the optical splitter and the optical fiber direct melting box are integrated into a bundle of optical fibers, or the loop sensing optical fiber of the front-end sensing module is a spare optical fiber or a redundant optical fiber in the transmission optical fiber between the optical splitter and the optical fiber direct melting box;
preferably, the transmission fiber between the optical splitter and the fiber direct melting box is a multi-core micro-cable fiber, and the front-end loop sensing fiber is one or more cores of the multi-core micro-cable fiber except for the transmission fiber.
As a further improvement of the present invention, the end sensing module is disposed on a circuit board of the ONU device or on a peripheral component for mounting the ONU device.
In order to achieve the above object, according to another aspect of the present invention, there is provided an optical fiber to desktop communication system with a sensing monitoring function, the communication system including an OLT device, an optical splitter, an optical fiber distribution frame, an optical fiber direct melting box, and a plurality of ONU devices, the OLT device being connected to the optical splitter, the optical fiber distribution frame, and the optical fiber direct melting box each being provided with an ONU node corresponding to a single ONU device one to one, the ONU nodes of the optical splitter, the ONU nodes of the optical fiber distribution frame, the ONU nodes of the optical fiber direct melting box, and the single ONU device being connected in sequence by optical fibers, characterized in that,
the communication system also comprises a front end sensing module and a plurality of tail end sensing modules, the optical fiber distribution frame and the optical fiber direct melting box are provided with nodes corresponding to the front end sensing modules, the optical fiber direct melting box is also provided with nodes corresponding to the single tail end sensing modules one by one, the front end sensing modules form front end outgoing sensing optical fibers of the front end sensing modules at the corresponding nodes of the optical fiber distribution frame and connecting optical fibers between the corresponding nodes of the optical fiber direct melting box and the corresponding nodes of the optical fiber direct melting box, the connecting optical fibers between the nodes of the optical fiber direct melting box corresponding to the front end sensing modules and one tail end sensing module form tail end outgoing sensing optical fibers of the tail end sensing modules, the connecting optical fibers between the tail end sensing modules and the nodes of the optical fiber direct melting box corresponding to the tail end sensing modules form tail end outgoing sensing optical fibers of the tail end sensing modules, and the connecting optical fibers between the other tail end sensing modules and the nodes of the optical fiber direct melting box corresponding to the last tail end sensing module form tail end outgoing sensing optical fibers of the other tail end outgoing sensing modules The sensing optical fibers, the connecting optical fibers between the other tail end sensing modules and the corresponding nodes of the optical fiber direct melting box form tail end loop sensing optical fibers of the other tail end sensing modules, and an optical fiber sensing link for sensing and monitoring is formed by the front end outgoing sensing optical fibers, the tail end outgoing sensing optical fibers of the tail end sensing modules and the tail end loop sensing optical fibers.
As a further improvement of the present invention, the connection optical fiber between the ONU node of the optical fiber distribution frame and the ONU node of the optical fiber direct melting box is a multi-core optical fiber, the front-end outgoing sensing optical fiber is a spare optical fiber or a redundant optical fiber in the multi-core optical fiber, and the multi-core optical fiber is preferably a multi-core micro-cable optical fiber.
As a further improvement of the present invention, part or all of the connection fibers between the ONU nodes and the ONUs of the fiber direct melting tank are multicore optical fiber, and the end outgoing sensing fiber and the end return sensing fiber are spare fibers or redundant fibers in the multicore optical fiber, and the multicore optical fiber is preferably a multicore micro cable optical fiber.
As a further improvement of the invention, the optical fiber sensing link also comprises a front-end loop sensing optical fiber, the front-end loop sensing optical fiber is a connecting optical fiber between a node of the optical fiber direct melting box corresponding to the last tail end sensing module and another node of the optical fiber distribution frame corresponding to the front-end sensing module, and the front-end sensing module is connected with another node of the optical fiber distribution frame corresponding to the front-end sensing module through the optical fiber.
As a further improvement of the present invention, part or all of the optical fibers between the ONU nodes of the optical fiber distribution frame and the ONU nodes of the optical fiber direct melting box are implemented by using a multi-core optical fiber, the front-end loop sensing fiber is a spare fiber or a redundant fiber in the multi-core optical fiber, and the multi-core optical fiber is preferably a multi-core micro-cable fiber.
As a further improvement of the present invention, the end sensing module is disposed on a circuit board of the ONU device or on a peripheral component for mounting the ONU device.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
the invention relates to a communication system from optical fiber to desktop with sensing and monitoring functions, which can utilize single fiber sensing technology when a front-end sensing module is only provided with an outgoing sensing micro cable by skillful structural arrangement, reasonably set the format of a pulse optical signal injected into the outgoing sensing micro cable of the front-end sensing module, wherein the whole sensing link comprises the outgoing sensing micro cable of the front-end sensing module, the outgoing sensing micro cables of a plurality of tail-end sensing modules and a loop sensing micro cable form hand-hand series connection of a plurality of monitoring points, a detector is utilized to monitor the pulse optical signal of the outgoing sensing micro cable returned to the front-end sensing module by the whole sensing link, the sensing and monitoring are carried out by utilizing the change of a reflected signal caused by the vibration of a disturbance point or other environmental changes, so that the outgoing sensing micro cable of one trunk link is only utilized to realize the sensing and monitoring of a plurality of monitoring points of the whole sensing link, the cable waste caused by the use of a plurality of trunk link sensing micro cables is avoided.
The invention relates to a fiber-to-desktop communication system with sensing and monitoring functions, which can utilize a double-fiber sensing technology when a front-end sensing module is only provided with an outgoing sensing micro cable and a return sensing micro cable by ingenious structural arrangement, reasonably sets the format of a pulse light signal injected into the outgoing sensing micro cable of a front-end sensing module, wherein the whole sensing link comprises the outgoing sensing micro cable of the front-end sensing module, the outgoing sensing micro cables of a plurality of tail-end sensing modules and the return sensing micro cable form a hand-held serial connection with a plurality of monitoring points, the return sensing micro cable of the front-end sensing module monitors the pulse light signal of the return sensing micro cable of the front-end sensing module by a detector, and the change of a reflection signal is caused by the vibration of disturbance points or other environmental changes, so that only micro cables of two trunk links (the outgoing sensing micro cable, the return sensing micro cable and the return sensing micro cable) are utilized, Loop sensing micro cable), realize the sensing monitoring of a plurality of monitoring points of whole sensing link, avoided using the cable waste that a plurality of trunk link sensing micro cables caused.
The invention relates to an optical fiber-to-desktop communication system with a sensing monitoring function, which utilizes a multi-core optical fiber micro cable to realize the bundling of part or all of communication micro cables between an optical splitter and an optical fiber direct melting box and outgoing sensing micro cables or loop sensing micro cables of a front-end sensing module, thereby fully utilizing vacant cables on a main link of the existing communication line, leading the sensing link to realize the connection of the sensing link without adding redundant cables on the basis of the existing communication network and only using the vacant cables.
The invention relates to an optical fiber-to-desktop communication system with a sensing monitoring function, which utilizes a multi-core optical fiber micro cable to realize the bundle of a route-going sensing micro cable and a loop sensing micro cable of a single ONU device and a communication micro cable between the single ONU device and an optical fiber direct melting box, thereby fully utilizing the vacant cable on the existing communication line branch link, leading the sensing link to be capable of realizing the connection of the sensing link only by using the vacant cable without adding redundant cables on the basis of the existing communication network.
According to the optical fiber-to-desktop communication system with the sensing monitoring function, the 86 panel type ONU is matched with the micro-tube micro-cable, so that the connection part of the micro-cable and the ONU packaged by the 86 bottom box is buried in the wall, and the photoelectric converter is sunk to the panel by using the 86 bottom box package, just like a common 86 switch embedded in the wall, and only the 86 panel is presented on the surface of the wall, so that the external optical fiber of the photoelectric converter is not exposed, the connection reliability of the photoelectric converter and the external optical fiber is effectively protected, and the use is attractive.
Drawings
Fig. 1 is a schematic diagram of a fiber-to-desktop communication system with a sensing and monitoring function according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
Micro-cable: the micro optical cable, called micro cable for short, has the same optical transmission index as the common optical cable, and is called micro cable for short because the external diameter is thinner than the common optical cable.
A micro-tube: a device for bundling suit micro cable.
Fig. 1 is a schematic diagram of a fiber-to-desktop communication system with a sensing and monitoring function according to an embodiment of the present invention. As shown in fig. 1, the optical fiber-to-desktop communication system with sensing and monitoring functions according to the present invention is configured correspondingly in an existing optical fiber-to-desktop communication system, wherein the existing communication system includes an OLT device, an optical splitter, an optical distribution frame, an optical fiber direct melting box, and a plurality of ONU devices, preferably, the optical splitter is disposed at a proximal end of the OLT device, the proximal end of the OLT device, i.e., a connection line between the OLT device and the optical splitter, is within a distance range that can be reached by direct connection, and the optical splitter, the optical distribution frame, and the optical fiber direct melting box are provided with ONU nodes corresponding to the individual ONU devices one by one, and the fiber distribution frame nodes of the optical splitter and the ONU nodes of the optical fiber distribution frame, the ONU nodes of the optical distribution frame and the ONU nodes of the optical fiber direct melting box, and the ONU nodes of the optical fiber direct melting box and the individual ONU devices are connected by optical fibers, so that a downlink interface of the optical splitter and an uplink interface of each ONU device can be directly connected one, of course, the preferable mode in the above structure is to realize the transfer connection between the optical splitter and the direct melting box through the optical fiber distribution frame, the conversion of the jumper wire can be conveniently realized through the optical fiber distribution frame, the optical splitter can also be directly connected with the optical fiber direct melting box, or other transfer structures replacing the optical fiber distribution frame are adopted;
on the basis of the existing structure, the system also comprises a front-end sensing module and tail-end sensing modules which correspond to each ONU device one by one, wherein the front-end sensing module is arranged at the near end of the OLT device, the front-end sensing module is directly welded with a tail-end outgoing sensing fiber corresponding to a tail-end sensing module in an optical fiber direct melting box through a sensing fiber (a front-end outgoing sensing fiber), the tail-end sensing module is directly welded with the tail-end outgoing sensing fiber of the next tail-end sensing module in the optical fiber direct melting box through another sensing fiber (a tail-end loop sensing fiber), the rest tail-end sensing modules are sequentially welded with the tail-end outgoing sensing fiber of the front tail-end sensing module in the optical fiber direct melting box directly, the tail-end loop sensing fiber of the rest tail-end sensing modules is directly welded with the tail-end outgoing sensing fiber of the front tail-end sensing module in the optical fiber direct melting box, the front end outgoing sensing optical fiber, the tail end outgoing sensing optical fibers of all tail end sensing modules and the tail end loop sensing optical fiber form a hand-in-hand optical fiber sensing link for sensing monitoring.
Specifically, the system further comprises a front-end sensing module and end sensing modules corresponding to each ONU device one by one, wherein the front-end sensing module can be arranged at the near end of the OLT device or the near end of the optical splitter, if a sorting requirement exists, a plurality of end sensing modules can be sorted according to a preset requirement of sensing monitoring, an outgoing sensing fiber of the front-end sensing module and an outgoing sensing fiber of a first end sensing module are welded through an optical fiber direct melting box, a loop sensing fiber of the current end sensing module and an outgoing sensing fiber of a next end sensing module are welded through an optical fiber direct melting box according to the sorting sequence, specifically, the front-end sensing module is sequentially connected through optical fibers between a corresponding node of the optical fiber distribution frame and a corresponding node of the optical fiber direct melting box, and a connecting fiber between the corresponding node of the optical fiber distribution frame and the corresponding node of the optical fiber direct melting box forms an outgoing sensing photosensitive fiber of the front-end sensing module Fiber; the node of the optical fiber direct melting box, which corresponds to the front end sensing module, is connected with the first tail end sensing module through an optical fiber, and the section of connecting optical fiber forms an outgoing sensing optical fiber of the first tail end sensing module; the first end sensing module is connected with a corresponding node of the optical fiber direct melting box through an optical fiber, and the section of connecting optical fiber forms a loop sensing optical fiber of the first end sensing module; sequentially recursion, wherein a node of the optical fiber direct melting box corresponding to the last tail end sensing module is connected with the current tail end sensing module through an optical fiber, the section of connecting optical fiber forms an outgoing sensing optical fiber of the current tail end sensing module, the current tail end sensing module is connected with the corresponding node of the optical fiber direct melting box through an optical fiber, the section of connecting optical fiber forms a loop sensing optical fiber of the current tail end sensing module, through the arrangement of the hand-in optical fiber connection, a single-fiber sensing technology can be utilized, through reasonably setting the format of a pulse optical signal emitted into the outgoing sensing optical fiber of the front end sensing module, the whole sensing link comprises the outgoing sensing optical fiber of the front end sensing module, the outgoing sensing optical fibers of a plurality of tail end sensing modules and the loop sensing optical fiber form hand-in-series connection of a plurality of monitoring points, and a detector is utilized to monitor the outgoing sensing optical fiber signal of the whole sensing link which is returned to the front end sensing module, the change of the reflected signal caused by the vibration of the disturbance point or other environmental changes is utilized for sensing and monitoring, so that the outgoing sensing optical fiber of one trunk link is only utilized, the sensing and monitoring of a plurality of monitoring points of the whole sensing link are realized, and the cable waste caused by the use of a plurality of trunk link sensing optical fibers is avoided.
As a preferred embodiment, the front-end sensing module is further provided with a loop sensing optical fiber, the loop sensing optical fiber of the front-end sensing module is welded to the loop sensing micro cable of the last terminal sensing module through an optical fiber direct melting box, specifically, the optical fiber distribution frame is further provided with another node corresponding to the front-end sensing module, the loop sensing optical fiber of the front-end sensing module is a connecting optical fiber between the node corresponding to the last terminal sensing module of the optical fiber direct melting box and the another node corresponding to the front-end sensing module of the optical fiber distribution frame, and the front-end sensing module is connected to the another node corresponding to the optical fiber distribution frame through an optical fiber. When the front-end sensing module is provided with the outgoing sensing optical fiber and the return sensing optical fiber, the double-fiber sensing technology can be utilized, by reasonably setting the format of the pulse optical signals injected into the outgoing sensing optical fiber of the front-end sensing module, the whole sensing link comprises the outgoing sensing optical fiber of the front-end sensing module, the outgoing sensing optical fibers of a plurality of tail-end sensing modules and the loop sensing optical fiber which form a plurality of monitoring points and are connected in series by hand power and the loop sensing optical fiber of the front-end sensing module, and the detector is used for monitoring the pulse optical signals of the loop sensing optical fiber which is transmitted to the front end sensing module by the whole sensing link, the change of the reflected signals is caused by the vibration of the disturbance point or other environmental changes, therefore, only the optical fibers (outgoing sensing optical fibers and return sensing optical fibers) of the two trunk links are utilized to realize the sensing monitoring of a plurality of monitoring points of the whole sensing link, and the cable waste caused by the use of a plurality of trunk link sensing optical fibers is avoided.
The connection optical fiber between the ONU node of the optical fiber distribution frame and the ONU node of the optical fiber direct melting box can be realized by a multi-core optical cable such as a multi-core micro cable, the connection optical fiber between the ONU node of the optical fiber direct melting box and the ONU node of the optical fiber distribution frame can also be realized by a multi-core optical cable such as a multi-core micro cable, and the multi-core micro cable can be sheathed in the micro tube by an air blowing technology. The system can realize the laying of the optical cable of the full optical network in the intelligent building, and particularly, the optical fiber direct melting box can be arranged in a sub-core area of the building, preferably, the optical fiber direct melting box is arranged in a weak electric well of each floor of the building, the micro-pipe can be partially or wholly embedded in the wall body of the building or other facilities according to the requirement of a preset wiring design, in the process of laying the network, a plurality of cable blowing machines can be used for blowing the micro-cable into a specified position according to the requirement of engineering, the laying length of each cable blowing machine is 1-2 kilometers, and the total laying length can reach 6 kilometers or even longer. Wherein the process that the blowing machine blows the micro cable into the designated position is as follows: the communication cable is pushed into the pipeline by a mechanical propeller, strong airflow is conveyed into the pipeline by the air compressor, and high-speed flowing gas forms forward thrust on the surface of the optical cable to promote the optical cable to advance. The optical cable is laid in an air blowing mode, so that the effects of high pipeline utilization rate, simplicity and convenience in construction, upgrading and convenience in maintenance can be achieved. Meanwhile, when a section of micro cable breaks down to cause that the section of micro cable line is not communicated, the section of micro cable can be blown out of the corresponding micro tube by the air blowing technology, and the corresponding micro cable is blown out by the air blowing technology, so that the troubleshooting time is greatly reduced, and meanwhile, the optical fiber fusion link is saved, and the later maintenance cost is saved.
Generally, when a communication network is set, the micro-pipes can be partially or wholly pre-embedded according to a preset wiring design, corresponding micro-cables can be blown in through an air blowing technology, generally speaking, the pre-set micro cable has extra cables, so that the unoccupied extra cables of the multi-core micro cable can be used to form the outgoing sensing optical fiber of the front-end sensing module, of course, the unoccupied redundant cable can be used to form the loop sensing optical fiber of the front-end sensing module, the unoccupied redundant cable can be used to form the outgoing sensing optical fiber and the loop sensing optical fiber of the tail-end sensing module, therefore, the vacant cables on the existing communication line backbone links can be fully utilized, so that the sensing links can be connected by only using the vacant cables without adding redundant cables on the basis of the existing communication network.
As a preferred embodiment, the ONU device may be installed in an 86-chassis, and the end-sensing module may be disposed on a circuit board of the ONU device, or may be disposed on a peripheral component for installing the ONU device; meanwhile, the micro-tube can be partially or wholly embedded in a building wall or other settings according to the requirement of a preset wiring design, so that the joint of the micro-cable and the 86-bottom-box-packaged single-port ONU equipment is embedded in the wall, and as the ONU of the 86-bottom-box-packaged single-port ONU equipment sinks to the panel, the panel is just like a common 86 switch embedded in the wall, and the surface of the wall is only presented as the 86 panel, so that the external optical fiber of the ONU equipment is not exposed, the reliability of the connection between the ONU equipment and the external optical fiber is effectively protected, and the use is attractive.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A fiber-to-desktop communication system with a sensing monitoring function comprises OLT equipment, an optical splitter, a fiber direct melting box and a plurality of ONU equipment, wherein the optical splitter is arranged at the near end of the OLT equipment and is connected with the fiber direct melting box through an optical fiber to transmit signals, the fiber direct melting box is connected with the ONU equipment through the optical fiber to transmit signals, a downlink interface of the optical splitter is formed to be directly connected with the uplink interface of each ONU equipment in a one-to-one mode through the optical fiber, and the fiber-to-desktop communication system is characterized in that,
the system also comprises a front-end sensing module and tail-end sensing modules which are in one-to-one correspondence with each ONU device, wherein the front-end sensing module is arranged at the near end of the OLT device and is directly welded with an optical fiber corresponding to a tail-end sensing module, namely a tail-end outgoing sensing optical fiber, in an optical fiber direct-melting box through a sensing optical fiber, namely a front-end outgoing sensing optical fiber, the tail-end sensing module is directly welded with the tail-end outgoing sensing optical fiber of the next tail-end sensing module in the optical fiber direct-melting box through another sensing optical fiber, namely a tail-end outgoing sensing optical fiber, the other tail-end sensing modules are sequentially welded with the tail-end outgoing sensing optical fiber of the previous tail-end sensing module in the optical fiber direct-melting box, and the tail-end outgoing sensing optical fiber of the next tail-end sensing module is directly welded with the tail-end outgoing sensing optical fiber of the next tail-end sensing module.
2. The fiber-to-desktop communication system with sensing and monitoring functions as claimed in claim 1, wherein the front-end outgoing sensing fiber is integrated with the transmission fiber between the optical splitter and the fiber direct melting box into a bundle of fibers, or the front-end outgoing sensing fiber is a spare fiber or a redundant fiber in the transmission fiber between the optical splitter and the fiber direct melting box;
preferably, the transmission optical fiber between the optical splitter and the optical fiber direct melting box is a multi-core micro-cable optical fiber, and the front-end outgoing sensing optical fiber is one or more cores of the multi-core micro-cable optical fiber except for the transmission optical fiber, so as to form sensing monitoring of a branch link between the optical fiber direct melting box and the ONU device.
3. The fiber-to-desktop communication system with sensing and monitoring functions as claimed in claim 1 or 2, wherein the end outgoing sensing fiber and the end loop sensing fiber, which are fusion-connected to each other between the end sensing modules, and the transmission fiber between the corresponding ONU device and the floor fiber direct melting box are integrated into a bundle of fibers, or the end outgoing sensing fiber and the end loop sensing fiber, which are fusion-connected to each other between the end sensing modules, are spare fibers or redundant fibers in the transmission fiber between the ONU device and the fiber direct melting box;
preferably, the transmission optical fiber between the ONU device and the optical fiber direct melting box is a multi-core micro-cable optical fiber, and the tail end outgoing sensing optical fiber and the tail end loop sensing optical fiber, which are fusion-connected to each other, of each tail end sensing module are one or more cores of the multi-core micro-cable optical fiber except for the transmission optical fiber.
4. A fiber to desktop communication system with sensing and monitoring capabilities according to any of claims 1-3 and wherein said front sensing module is further provided with a loop sensing fiber, which is fusion spliced with the loop sensing fiber of the last end sensing module in a fiber direct melting box.
5. The fiber-to-desktop communication system with the sensing and monitoring function according to claim 4, wherein the loop sensing fiber of the front-end sensing module and the transmission fiber between the optical splitter and the fiber direct melting box are integrated into a bundle of fibers, or the loop sensing fiber of the front-end sensing module is a spare fiber or a redundant fiber in the transmission fiber between the optical splitter and the fiber direct melting box;
preferably, the transmission optical fiber between the optical splitter and the optical fiber direct melting box is a multi-core micro-cable optical fiber, and the front-end loop sensing optical fiber is one or more cores of the multi-core micro-cable optical fiber except for the transmission optical fiber.
6. A communication system from optical fiber to desktop with sensing monitoring function comprises OLT equipment, an optical splitter, an optical fiber distribution frame, an optical fiber direct melting box and a plurality of ONU equipment, wherein the OLT equipment is connected with the optical splitter, the optical fiber distribution frame and the optical fiber direct melting box are all provided with ONU nodes which are in one-to-one correspondence with the single ONU equipment, and the ONU nodes of the optical splitter, the ONU nodes of the optical fiber distribution frame, the ONU nodes of the optical fiber direct melting box and the single ONU equipment are sequentially connected through optical fiber,
the communication system further comprises a front-end sensing module and a plurality of tail-end sensing modules, the optical fiber distribution frame and the optical fiber direct melting box are provided with nodes corresponding to the front-end sensing modules, the optical fiber direct melting box is further provided with nodes corresponding to the single tail-end sensing modules one by one, the front-end sensing modules form front-end outgoing sensing optical fibers of the front-end sensing modules at the corresponding nodes of the optical fiber distribution frame and connecting optical fibers between the corresponding nodes of the optical fiber direct melting box and the corresponding nodes of the front-end sensing modules, the connecting optical fibers between the nodes of the optical fiber direct melting box corresponding to the front-end sensing modules and one tail-end sensing module form tail-end outgoing sensing optical fibers of the tail-end sensing modules, the connecting optical fibers between the tail-end sensing modules and the nodes of the optical fiber direct melting box corresponding to the tail-end sensing modules form tail-end loop sensing optical fibers of the tail-end sensing modules, and the other tail-end sensing modules and the nodes of the optical fiber direct melting box corresponding to the last tail-end The connecting optical fibers form tail end outgoing sensing optical fibers of other tail end sensing modules, and the connecting optical fibers between the other tail end sensing modules and the corresponding nodes of the optical fiber direct melting box form tail end loop sensing optical fibers of the other tail end sensing modules.
7. The optical fiber-to-desktop communication system with a sensing and monitoring function as claimed in claim 6, wherein the connection fiber between the ONU node of the optical fiber distribution frame and the ONU node of the optical fiber direct melting box is a multi-core optical fiber, preferably a multi-core micro-cable fiber, and the front-end outgoing sensing fiber is a spare fiber or a redundant fiber in the multi-core optical fiber.
8. The optical fiber-to-desktop communication system with sensing and monitoring functions as claimed in claim 6, wherein part or all of the connection fibers between the ONU nodes of the optical fiber direct melting box and the ONUs are multi-core optical fiber cables, preferably multi-core micro-cable optical fibers, and the end-to-end routing sensing fibers and the end-to-end loop sensing fibers are spare fibers or redundant fibers in the multi-core optical fiber cables.
9. A fiber to desktop communication system with sensing and monitoring functionality according to any of claims 6-8 and wherein said fiber sensing link further comprises said front loop sensing fiber, said front loop sensing fiber being a connecting fiber between a node of said fiber direct melting box corresponding to a last end sensing module and another node of said fiber distribution frame corresponding to said front sensing module, said front sensing module and another node thereof corresponding to said fiber distribution frame being connected by fiber.
10. The fiber-to-desktop communication system with sensing and monitoring function as claimed in claim 9, wherein part or all of the optical fibers between the ONU nodes of the optical distribution frame and the ONU nodes of the optical fiber direct melting box are implemented by multi-core optical fiber cables, preferably multi-core micro-cable optical fibers, and the front-end loop sensing fiber is a spare fiber or a redundant fiber in the multi-core optical fiber cables.
CN202010589522.5A 2020-06-24 2020-06-24 Optical fiber-to-desktop communication system with sensing and monitoring functions Pending CN111770398A (en)

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