A fiber-to-desktop communication system with sensor monitoring function

Abstract

The invention discloses a fiber-to-desktop communication system with a sensing and monitoring function, comprising an OLT device, an optical splitter, an optical fiber direct-fusion box and a plurality of ONU devices, wherein a downlink interface of the optical splitter is directly connected to an uplink interface of each ONU device in a one-to-one optical fiber manner, wherein the system further comprises a front-end sensing module and a terminal sensing module corresponding to each ONU device in a one-to-one manner, wherein the front-end sensing module is placed at the near end of the OLT device, and a plurality of terminal sensing modules are sorted according to preset requirements of sensing and monitoring, a forward sensing fiber of the front-end sensing module is fused with a forward sensing fiber of a first terminal sensing module through an optical fiber direct-fusion box, and a return sensing fiber of a current terminal sensing module is fused with a forward sensing fiber of a next terminal sensing module through an optical fiber direct-fusion box according to a sorting order, aiming to solve the technical problem of waste of trunk link resources caused by direct connection of multiple monitoring points to detection devices in a fiber-to-desktop communication system.

Description

Technical Field

[0001] The invention belongs to the field of optical fiber communication network architecture, and in particular relates to an optical fiber-to-desktop communication system with a sensing and monitoring function. Background Art

[0002] Optical fiber sensing includes two functions: perception and transmission of external signals (measured). The so-called perception (or sensitivity) refers to the change of the physical characteristic parameters of the light waves transmitted in the optical fiber, such as intensity (power), wavelength, frequency, phase and polarization state, according to the law of change of the external signal. Measuring the change of the optical parameters is to "perceive" the change of the external signal. This "perception" is essentially the real-time modulation of the light waves propagating in the optical fiber by the external signal. The so-called transmission refers to the optical fiber transmitting the light waves modulated by the external signal to the optical detector for detection, extracting the external signal from the light wave and performing data processing as needed, that is, demodulation. Therefore, optical fiber sensing technology includes two aspects of modulation and demodulation, namely, the modulation technology (or loading technology) of how the external signal (measured) modulates the light wave parameters in the optical fiber and the demodulation technology (or detection technology) of how to extract the external signal (measured) from the modulated light wave. There are hundreds of fiber optic sensing technologies, which can sense physical quantities such as temperature, pressure, flow, displacement, vibration, rotation, bending, liquid level, velocity, acceleration, sound field, current, voltage, magnetic field and radiation with different performance.

[0003] At present, fiber to the desktop (FTTD) is to use optical fiber to replace traditional network cables (such as Category 6 cables) to extend the network to user terminals, so that user terminals can access the network through optical fiber throughout the entire process. As disclosed in patent document CN109951231, a typical fiber to the desktop system includes an OLT device, a splitter, a fiber optic direct fuse box and multiple ONU devices. The splitter is placed at the near end of the OLT device, the splitter is connected to the fiber optic direct fuse box through a communication microcable, and the fiber optic direct fuse box is connected to multiple ONU devices through a communication microcable to achieve a one-to-one fiber direct connection between the downlink interface of the splitter and the uplink interface of each ONU device. For complex networks, this solution only uses a one-level splitting method, and the downlink interface of the splitter is directly connected to the uplink interface of the ONU device in a one-to-one fiber optic direct connection, eliminating the routing equipment or multi-level splitter equipment of the network node, thereby avoiding the impact of node equipment failure on the reliability of the network. At the same time, it simplifies network troubleshooting and improves the experience of terminal users. The optical splitter is arranged at the near end of the OLT device. The near end of the OLT device is within the distance range directly connected to the connecting line between the OLT device and the optical splitter. The PON port of the OLT and its corresponding splitting ratio can be reasonably configured, that is, the splitting ratio of the PON port of the OLT device corresponding to the interface can be divided according to the service type of the downstream application terminal of the ONU device, thereby realizing the reasonable allocation and management of the network terminals of the communication system.

[0004] However, for the fiber-to-the-desk system of the above structure, a sensor link of the entire all-fiber network is set up on its basis, referring to the connection method between the ONU device and the OLT device in the above fiber-to-the-desk system. Since there are multiple monitoring points that need to be set up, if a single monitoring point is directly connected to the corresponding detection equipment after transition through an intermediate device, there must be as many sensor links on the trunk link as there are monitoring points. Although the cables of the trunk link can be realized by multi-core micro cables, such as a micro cable with a maximum core number of 288 cores or even more, the solution of directly connecting multiple monitoring points to the detection equipment will inevitably result in sensor link monitoring of multiple trunk links, and the sensor link monitoring of multiple trunk links will inevitably cause a waste of trunk link resources. At the same time, the existence of multiple trunk links and interaction with the detection equipment will inevitably lead to communication redundancy of the detection equipment, thereby affecting the monitoring efficiency. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a fiber-to-the-desktop communication system including sensor monitoring, aiming to solve the technical problem of waste of trunk link resources caused by direct connection of detection equipment to multiple monitoring points in the fiber-to-the-desktop communication system.

[0006] To achieve the above-mentioned purpose, according to one aspect of the present invention, a fiber-to-desktop communication system with a sensor monitoring function is provided, which includes an OLT device, an optical splitter, an optical fiber direct fuse box and multiple ONU devices, wherein the optical splitter is placed at the near end of the OLT device, and is connected to the optical fiber direct fuse box through optical fiber to transmit signals, and the optical fiber direct fuse box is connected to multiple ONU devices through optical fiber to transmit signals, forming a one-to-one optical fiber direct connection between the downlink interface of the optical splitter and the uplink interface of each ONU device.

[0007] The system also includes a front-end sensing module and a terminal sensing module corresponding to each ONU device one by one, wherein the front-end sensing module is placed at the proximal end of the OLT device, and is directly fused in a fiber optic direct-fusion box with a terminal outgoing sensing fiber corresponding to a terminal sensing module through a sensing fiber, namely, a front-end outgoing sensing fiber, and the terminal sensing module is simultaneously directly fused in a fiber optic direct-fusion box with a terminal outgoing sensing fiber of the next terminal sensing module through another sensing fiber, namely, a terminal loop sensing fiber, and the remaining terminal sensing modules are sequentially directly fused in a fiber optic direct-fusion box with their terminal outgoing sensing fibers and the terminal loop sensing fibers of the previous terminal sensing module, and their terminal loop sensing fibers and the terminal outgoing sensing fibers of the next terminal sensing module, and a fiber optic sensing link for sensing monitoring is formed through the front-end outgoing sensing fibers, the terminal outgoing sensing fibers of each terminal sensing module, and the terminal loop sensing fibers.

[0008] As a further improvement of the present invention, the front-end outgoing sensing optical fiber and the transmission optical fiber between the optical splitter and the optical fiber direct-fusion box are integrated into a bundle of optical fibers, or the front-end outgoing sensing optical fiber is a spare optical fiber or redundant optical fiber in the transmission optical fiber between the optical splitter and the optical fiber direct-fusion box;

[0009] Preferably, the transmission optical fiber between the optical splitter and the optical fiber direct fuse box is a multi-core microcable optical fiber, and the front-end forward sensing optical fiber is one or more cores of the multi-core microcable optical fiber except for the transmission optical fiber, thereby forming sensor monitoring of the branch link between the optical fiber direct fuse box and the ONU device.

[0010] As a further improvement of the present invention, the terminal outgoing sensing optical fiber and the terminal loop sensing optical fiber fused to each other between each terminal sensing module are integrated into a bundle of optical fibers with the corresponding transmission optical fiber between the ONU device and the floor optical fiber direct-fusion box, or the terminal outgoing sensing optical fiber and the terminal loop sensing optical fiber fused to each other between each terminal sensing module are spare optical fibers or redundant optical fibers in the transmission optical fiber between the ONU device and the optical fiber direct-fusion box;

[0011] Preferably, the transmission optical fiber between the ONU device and the optical fiber direct-fusion box is a multi-core micro-cable optical fiber, and the terminal outgoing sensing optical fiber and the terminal loop sensing optical fiber that are fusion-spliced ​​with each other between each terminal sensing module are one or more cores of the multi-core micro-cable optical fiber except for the transmission optical fiber.

[0012] As a further improvement of the present invention, the front-end sensing module is further provided with a loop sensing optical fiber, which is fusion-connected with the loop sensing optical fiber of the last end sensing module in the optical fiber direct-fusion box.

[0013] As a further improvement of the present 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-fusion 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 redundant optical fiber in the transmission optical fiber between the optical splitter and the optical fiber direct-fusion box;

[0014] Preferably, the transmission optical fiber between the optical splitter and the optical fiber direct fuse 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 the transmission optical fiber.

[0015] As a further improvement of the present invention, the end sensor module is placed on a circuit board of the ONU device, or on a peripheral component used to install the ONU device.

[0016] To achieve the above object, according to another aspect of the present invention, a fiber-to-desktop communication system with a sensor monitoring function is provided, the communication system comprises an OLT device, an optical splitter, an optical fiber distribution frame, an optical fiber direct-fusion box and a plurality of ONU devices, the OLT device is connected to the optical splitter, the optical splitter, the optical fiber distribution frame and the optical fiber direct-fusion box are all provided with an ONU node corresponding to a single ONU device one by one, the ONU node of the optical splitter, the ONU node of the optical fiber distribution frame, the ONU node of the optical fiber direct-fusion box and the single ONU device are sequentially connected through optical fibers, characterized in that,

[0017] The communication system also includes a front-end sensing module and a plurality of terminal sensing modules. The optical fiber distribution frame and the optical fiber direct-fusion box are provided with nodes corresponding to the front-end sensing modules. The optical fiber direct-fusion box is also provided with nodes corresponding to the single terminal sensing modules. The connecting optical fiber between the corresponding node of the front-end sensing module in the optical fiber distribution frame and the corresponding node in the optical fiber direct-fusion box forms the front-end outgoing sensing optical fiber of the front-end sensing module. The connecting optical fiber between the node corresponding to the front-end sensing module and a terminal sensing module of the optical fiber direct-fusion box forms the terminal outgoing sensing optical fiber of the terminal sensing module. The terminal sensing module and the optical fiber direct-fusion box are connected to each other. The connecting optical fibers between the nodes corresponding to the end sensing module form the end loop sensing optical fibers of the end sensing module, the connecting optical fibers between the remaining end sensing modules and the nodes of the optical fiber direct fuse box corresponding to the previous end sensing module form the end outgoing sensing optical fibers of the remaining end sensing modules, and the connecting optical fibers between the remaining end sensing modules and the nodes corresponding to them form the end loop sensing optical fibers of the remaining end sensing modules. A fiber optic sensing link for sensing monitoring is formed through the front-end outgoing sensing optical fiber, the end outgoing sensing optical fibers of each end sensing module, and the end loop sensing optical fiber.

[0018] As a further improvement of the present invention, the connecting optical fiber between the ONU node of the optical fiber distribution frame and the ONU node of the optical fiber direct fuse box is a multi-core optical cable optical fiber, and the front-end forward sensing optical fiber is a spare optical fiber or redundant optical fiber in the multi-core optical cable. The multi-core optical cable optical fiber is preferably a multi-core micro-cable optical fiber.

[0019] As a further improvement of the present invention, part or all of the connecting optical fibers between the ONU nodes and the ONUs of the optical fiber direct fuse box are multi-core optical cable optical fibers, the end outgoing path sensing optical fibers and the end loop sensing optical fibers are spare optical fibers or redundant optical fibers in the multi-core optical cable optical fibers, and the multi-core optical cable optical fibers are preferably multi-core micro-cable optical fibers.

[0020] As a further improvement of the present invention, the optical fiber sensing link also includes a front-end loop sensing optical fiber, which is a connecting optical fiber between the node corresponding to the last end sensing module of the optical fiber direct fuse box and another node corresponding to the front-end sensing module of the optical fiber distribution frame. The front-end sensing module and another node corresponding to the front-end sensing module in the optical fiber distribution frame are connected via optical fiber.

[0021] As a further improvement of the present invention, part or all of the optical fibers between the ONU node of the fiber optic distribution frame and the ONU node of the fiber optic direct fuse box are implemented using multi-core optical cable fibers, and the front-end loop sensing optical fiber is a spare optical fiber or redundant optical fiber in the multi-core optical cable fibers, and the multi-core optical cable fibers are preferably multi-core micro-cable fibers.

[0022] As a further improvement of the present invention, the end sensor module is placed on a circuit board of the ONU device, or on a peripheral component used to install the ONU device.

[0023] In general, the above technical solution conceived by the present invention has the following beneficial effects compared with the prior art:

[0024] The fiber-to-desktop communication system with sensing and monitoring functions of the present invention has an ingenious structural setting, so that when the front-end sensing module is only provided with a forward sensing microcable, single-fiber sensing technology can be used. By reasonably setting the format of the pulse light signal injected into the forward sensing microcable of the front-end sensing module, the entire sensing link includes the forward sensing microcable of the front-end sensing module, and the forward sensing microcables and the return sensing microcables of multiple terminal sensing modules are connected in series hand in hand to form multiple monitoring points, and a detector is used to monitor the pulse light signal of the forward sensing microcable of the front-end sensing module transmitted back from the entire sensing link, and sensing and monitoring are performed by using the change of the reflected signal caused by the vibration of the disturbance point or other environmental changes, so that only the forward sensing microcable of one trunk link is used to realize the sensing monitoring of multiple monitoring points of the entire sensing link, thereby avoiding the cable waste caused by using multiple trunk link sensing microcables.

[0025] The fiber-to-desktop communication system with sensing and monitoring functions of the present invention has an ingenious structural setting, so that when the front-end sensing module is only provided with a forward sensing microcable and a return sensing microcable, dual-fiber sensing technology can be used. By reasonably setting the format of the pulse light signal injected into the forward sensing microcable of the front-end sensing module, the entire sensing link includes the forward sensing microcable of the front-end sensing module, the forward sensing microcables and return sensing microcables of multiple terminal sensing modules are connected in series hand in hand to form multiple monitoring points, and the return sensing microcable of the front-end sensing module, and a detector is used to monitor the pulse light signal of the return sensing microcable of the front-end sensing module transmitted from the entire sensing link to the front-end sensing module, and the change of the reflected signal caused by the vibration of the disturbance point or other environmental changes is used, so that only the microcables of two trunk links (the forward sensing microcable and the return sensing microcable) are used to realize the sensing monitoring of multiple monitoring points of the entire sensing link, thereby avoiding the cable waste caused by using multiple trunk link sensing microcables.

[0026] The fiber-to-desktop communication system with a sensing and monitoring function of the present invention utilizes a multi-core optical fiber microcable to realize the bundling of part or all of the communication microcables between the optical splitter and the optical fiber direct fuse box, and the outgoing sensing microcable or the returning sensing microcable of the front-end sensing module, thereby making full use of the idle cables on the existing communication line trunk link, so that the sensing link can be connected by using only the idle cables without adding redundant cables on the basis of the existing communication network.

[0027] The fiber-to-desktop communication system with a sensing and monitoring function of the present invention utilizes a multi-core optical fiber microcable to realize the bundling of a forward sensing microcable and a return sensing microcable of a single ONU device, and a communication microcable between a single ONU device and an optical fiber direct fuse box, thereby making full use of the idle cables on the existing communication line branch links, so that the sensing link can be connected by using only the idle cables without adding redundant cables on the basis of the existing communication network.

[0028] The present invention provides a fiber-to-desktop communication system with a sensing and monitoring function. Its 86 panel-type ONU cooperates with a micro-duct micro-cable so that the connection between the micro-cable and the ONU packaged in an 86 bottom box is buried in the wall. Since the photoelectric converter is packaged in an 86 bottom box and sunk to the panel, it is embedded in the wall like a commonly used 86 switch. Only an 86 panel is presented on the wall surface, so that the external optical fiber of the photoelectric converter is not exposed, thereby effectively protecting the reliability of the connection between the photoelectric converter and the external optical fiber, and the use is beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a schematic diagram of a fiber-to-the-desktop communication system with a sensing and monitoring function according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The present invention is further described in detail below in conjunction with specific embodiments.

[0032] Microcable: Micro optical cable, also known as microcable, has the same optical transmission indicators as ordinary optical cable. Since its outer diameter is thinner than ordinary optical cable, it is referred to as microcable.

[0033] Microduct: A device used to bundle micro cables.

[0034] Figure 1 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. Figure 1As shown, a fiber-to-desktop communication system with a sensor monitoring function of the present solution is correspondingly set up in an existing fiber-to-desktop communication system, wherein the existing communication system includes an OLT device, an optical splitter, an optical fiber distribution frame, an optical fiber direct-fusion box, and multiple ONU devices. Preferably, the optical splitter is placed at the proximal end of the OLT device, and the proximal end of the OLT device, that is, the OLT device is directly connected to the connecting line of the optical splitter within the reachable distance. By setting an ONU node corresponding to a single ONU device in the optical splitter, the optical fiber distribution frame, and the optical fiber direct-fusion box, the ONU node of the optical splitter is connected to the ONU node of the optical fiber distribution frame. NU nodes, ONU nodes of the optical fiber distribution frame and ONU nodes of the optical fiber direct-fusion box, and ONU nodes of the optical fiber direct-fusion box and a single ONU device are all connected by optical fiber, so that a one-to-one optical fiber direct connection between the downlink interface of the optical splitter and the uplink interface of each ONU device can be achieved. Of course, the preferred method in the above structure is to realize the transit connection between the optical splitter and the direct-fusion box through the optical fiber distribution frame, and the conversion of the jumper can be conveniently realized through the optical fiber distribution frame. It can also be achieved by directly connecting the optical splitter to the optical fiber direct-fusion box, or adopting other transit structures that replace the optical fiber distribution frame;

[0035] On the basis of the above existing structure, the system also includes a front-end sensing module and a terminal sensing module corresponding to each ONU device one by one, wherein the front-end sensing module is placed at the proximal end of the OLT device, and the front-end sensing module is directly fused with a terminal outgoing sensing fiber corresponding to a terminal sensing module in a fiber optic direct-fusion box through a sensing fiber (front-end outgoing sensing fiber), and the terminal sensing module is simultaneously directly fused with the terminal outgoing sensing fiber of the next terminal sensing module in a fiber optic direct-fusion box through another sensing fiber (terminal loop sensing fiber), and the remaining terminal sensing modules are sequentially directly fused with their terminal outgoing sensing fibers and the terminal loop sensing fibers of the previous terminal sensing module in a fiber optic direct-fusion box, and their terminal loop sensing fibers and the terminal outgoing sensing fibers of the next terminal sensing module in a fiber optic direct-fusion box, and a hand-in-hand fiber optic sensing link for sensing monitoring is formed through the above-mentioned front-end outgoing sensing fibers, the terminal outgoing sensing fibers of each terminal sensing module, and the terminal loop sensing fibers.

[0036] Specifically, the system also includes a front-end sensing module and a terminal sensing module corresponding to each ONU device one by one, wherein the front-end sensing module can be placed at the proximal end of the OLT device or the proximal end of the optical splitter. If there is a sorting requirement, multiple terminal sensing modules can be sorted according to the preset requirements of sensor monitoring. The outgoing sensing fiber of the front-end sensing module is fused with the outgoing sensing fiber of the first terminal sensing module through a fiber optic direct-fusion box, and the return sensing fiber of the current terminal sensing module is fused with the outgoing sensing fiber of the next terminal sensing module through a fiber optic direct-fusion box according to the sorting order. Specifically, the front-end sensing module, its corresponding node in the optical fiber distribution frame and its corresponding node in the optical fiber direct fuse box are connected in sequence through optical fibers, and the connecting optical fiber between the corresponding node in the optical fiber distribution frame and the corresponding node in the optical fiber direct fuse box forms the outgoing sensing optical fiber of the front-end sensing module; the node corresponding to the front-end sensing module in the optical fiber direct fuse box is connected to the first terminal sensing module through optical fibers, and the connecting optical fiber forms the outgoing sensing optical fiber of the first terminal sensing module; the first terminal sensing module and its corresponding node in the optical fiber direct fuse box are connected through optical fibers, and the connecting optical fiber forms the outgoing sensing optical fiber of the first terminal sensing module. The fiber forms the loop sensing fiber of the first terminal sensing module; recursively, the node corresponding to the previous terminal sensing module of the optical fiber direct fuse box is connected to the current terminal sensing module through an optical fiber, and the connecting optical fiber forms the outgoing sensing fiber of the current terminal sensing module, and the current terminal sensing module is connected to its corresponding node in the optical fiber direct fuse box through an optical fiber, and the connecting optical fiber forms the loop sensing fiber of the current terminal sensing module. Through the setting of the hand-in-hand optical fiber connection, the single-fiber sensing technology can be used to reasonably set the pulse in the outgoing sensing fiber of the front-end sensing module. The format of the impulse light signal, the entire sensing link includes the outgoing sensing optical fiber of the front-end sensing module, the outgoing sensing optical fibers and the return sensing optical fibers of multiple terminal sensing modules form a hand-in-hand series connection of multiple monitoring points, and the detector is used to monitor the pulse light signal of the outgoing sensing optical fiber of the entire sensing link back to the front-end sensing module, and the change of the reflected signal caused by the vibration of the disturbance point or other environmental changes is used to perform sensing monitoring, so that only the outgoing sensing optical fiber of one trunk link is used to realize the sensing monitoring of multiple monitoring points of the entire sensing link, avoiding the cable waste caused by using multiple trunk link sensing optical fibers.

[0037] As a preferred embodiment, the front-end sensing module is also provided with a loop sensing optical fiber, and the loop sensing optical fiber of the front-end sensing module is fused with the loop sensing microcable of the last end sensing module through a fiber optic direct-fusion box. Specifically, the fiber optic distribution frame is also 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 of the fiber optic direct-fusion box corresponding to the last end sensing module and another node of the fiber optic distribution frame corresponding to the front-end sensing module. The front-end sensing module and another node corresponding to the fiber optic distribution frame are connected through optical fiber. When the front-end sensing module is provided with both an outgoing sensing optical fiber and a loop sensing optical fiber, dual-fiber sensing technology can be used. By reasonably setting the format of the pulse light signal emitted into the outgoing sensing optical fiber of the front-end sensing module, the entire sensing link includes the outgoing sensing optical fiber of the front-end sensing module, the outgoing sensing optical fibers and the loop sensing optical fibers of multiple terminal sensing modules to form a hand-in-hand series connection of multiple monitoring points and the loop sensing optical fiber of the front-end sensing module, and a detector is used to monitor the pulse light signal of the loop sensing optical fiber transmitted to the front-end sensing module by the entire sensing link, and the change of the reflected signal caused by the vibration of the disturbance point or other environmental changes is used, so that only the optical fibers of two trunk links (outgoing sensing optical fiber and loop sensing optical fiber) are used to realize the sensing monitoring of multiple monitoring points of the entire sensing link, thereby avoiding the waste of cables caused by using multiple trunk link sensing optical fibers.

[0038] The connecting optical fiber between the ONU node of the optical fiber distribution frame and the ONU node of the optical fiber direct fuse box can be realized by using a multi-core optical cable such as a multi-core micro cable, and the connecting optical fiber between the ONU node of the optical fiber direct fuse box and the ONU node of the optical fiber distribution frame can also be realized by using a multi-core optical cable such as a multi-core micro cable, and the multi-core micro cable can be bundled and sheathed in a micro tube by air blowing technology. The system can be used to realize the laying of optical cables in the full optical network in the intelligent building. Specifically, the optical fiber direct fuse box can be placed in the sub-core area of ​​the building. Preferably, the optical fiber direct fuse box is placed in the weak current well of each floor of the building. The micro tube can be partially or completely embedded in the wall of the building or other facilities according to the needs of the preset routing design. In the process of laying the network, multiple cable blowing machines can be used to blow the micro cable into the designated position according to the needs of the project. The laying length of each cable blowing machine is 1-2 kilometers, and the total laying length can reach 6 kilometers or even longer. The process of the cable blowing machine blowing the microcable into the designated position is as follows: a mechanical propeller is used to push the communication cable into the pipeline, and at the same time, the air compressor delivers a strong airflow into the pipeline. The high-speed flowing gas forms a forward thrust on the surface of the optical cable, prompting the optical cable to move forward. Since the end of the optical cable is open, there is no stress at the end of the optical cable, so that the optical cable can move smoothly along the terrain or change of direction in the pipeline. After laying, the optical cable stops loosely at the bottom of the pipeline, which helps to extend the service life of the optical cable. The use of air blowing to lay optical cables can achieve the effects of high pipeline utilization, simple and fast construction, and convenient upgrade and maintenance. At the same time, when a section of microcable fails and causes the section of microcable line to be blocked, the air blowing technology can be used to blow the section of microcable out of the corresponding microtube, and the corresponding microcable can be blown out using air blowing technology, thereby greatly reducing the troubleshooting time, and at the same time eliminating the link of optical fiber fusion, thereby saving the later maintenance cost.

[0039] Generally speaking, when setting up a communication network, micro-ducts can be partially or completely pre-buried according to the preset routing design, and the corresponding micro-cables can be blown in by air blowing technology. Generally speaking, the preset micro-cables will have additional redundant cables, so the unoccupied redundant 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 cables can also be used to form the loop sensing optical fiber of the front-end sensing module. The unoccupied redundant cables can also be used to form the outgoing sensing optical fiber and the loop sensing optical fiber of the terminal sensing module. In this way, the unoccupied cables on the existing communication line trunk link can be fully utilized, so that the sensing link can be connected on the basis of the existing communication network without adding redundant cables, and only unoccupied cables can be used to achieve the connection of the sensing link.

[0040] As a preferred embodiment, the ONU device can be installed in an 86-port base box, and the terminal sensor module can be set on the circuit board of the ONU device, or on a peripheral component used to install the ONU device; at the same time, the micro-tube can be partially or completely pre-buried in the wall of a building or other settings according to the needs of a preset wiring design, so that the connection between the micro-cable and the single-port ONU device encapsulated in the 86-port base box is buried in the wall. Since the ONU of the single-port ONU device encapsulated in the 86-port base box is sunk to the panel, it is embedded in the wall like a commonly used 86 switch, and only appears as an 86 panel on the wall surface, so that the external optical fiber of the ONU device is not exposed, thereby effectively protecting the reliability of the connection between the ONU device and the external optical fiber, and it is beautiful to use.

[0041] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fiber-to-desktop communication system with sensing and monitoring functions, comprising an OLT device, an optical splitter, an optical fiber direct fuse box and a plurality of ONU devices, wherein: The optical splitter is placed at the proximal end of the OLT device, and is connected to the optical fiber direct fuse box through optical fiber to transmit signals. The optical fiber direct fuse box is connected to multiple ONU devices through optical fiber to transmit signals, forming a one-to-one optical fiber direct connection between the downlink interface of the optical splitter and the uplink interface of each ONU device, characterized in that: The system also includes a front-end sensing module and a terminal sensing module corresponding to each ONU device one by one, wherein the front-end sensing module is placed at the proximal end of the OLT device, and is directly fused in an optical fiber direct-fusion box through a sensing optical fiber, i.e., a front-end outgoing sensing optical fiber, and an optical fiber corresponding to an end sensing module, i.e., a terminal outgoing sensing optical fiber, and the terminal sensing module is simultaneously directly fused in an optical fiber direct-fusion box with a terminal outgoing sensing optical fiber of the next terminal sensing module through another sensing optical fiber, i.e., a terminal loop sensing optical fiber, and the remaining terminal sensing modules are sequentially directly fused in an optical fiber direct-fusion box with their terminal outgoing sensing optical fibers and the terminal loop sensing optical fibers of the previous terminal sensing module, and their terminal loop sensing optical fibers and the terminal outgoing sensing optical fibers of the next terminal sensing module are directly fused in an optical fiber direct-fusion box; The front-end outgoing sensing optical fiber and the transmission optical fiber between the optical splitter and the optical fiber direct-fusion box are integrated into a bundle of optical fibers, or the front-end outgoing sensing optical fiber is a spare optical fiber or redundant optical fiber in the transmission optical fiber between the optical splitter and the optical fiber direct-fusion box; Among them, the terminal outgoing sensing optical fiber and the terminal loop sensing optical fiber that are fused together between each terminal sensing module and the transmission optical fiber between the corresponding ONU device and the floor optical fiber direct fuse box are integrated into a bundle of optical fibers, or the terminal outgoing sensing optical fiber and the terminal loop sensing optical fiber that are fused together between each terminal sensing module are spare optical fibers or redundant optical fibers in the transmission optical fiber between the ONU device and the optical fiber direct fuse box.

2. According to claim 1, a fiber-to-desktop communication system with a sensing and monitoring function, the transmission optical fiber between the splitter and the optical fiber direct fuse box is a multi-core microcable optical fiber, and the front-end forward sensing optical fiber is one or more cores of the multi-core microcable optical fiber other than the transmission optical fiber, thereby forming a sensing monitoring of the branch link between the optical fiber direct fuse box and the ONU device.

3. According to a fiber-to-desktop communication system with sensing and monitoring functions as described in claim 1 or 2, the transmission optical fiber between the ONU device and the optical fiber direct-fusion box is a multi-core micro-cable optical fiber, and the terminal outgoing sensing optical fiber and the terminal return sensing optical fiber that are fusion-spliced ​​with each other between the terminal sensing modules are one or more cores in the multi-core micro-cable optical fiber except for the transmission optical fiber.

4. A fiber-to-desktop communication system with sensing and monitoring functions according to any one of claims 1 to 3, wherein: The front-end sensing module is also provided with a loop sensing optical fiber, which is fusion-connected with the loop sensing optical fiber of the last end sensing module in the optical fiber direct-fusion box.

5. A fiber-to-desktop communication system with sensing and monitoring functions according to claim 4, wherein: 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-fusion 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-fusion box; The transmission optical fiber between the optical splitter and the optical fiber direct fuse 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 the transmission optical fiber.

6. A fiber-to-desktop communication system with a sensor monitoring function, the communication system comprising an OLT device, an optical splitter, an optical fiber distribution frame, an optical fiber direct-fusion box and a plurality of ONU devices, the OLT device is connected to the optical splitter, the optical splitter, the optical fiber distribution frame and the optical fiber direct-fusion box are all provided with an ONU node corresponding to a single ONU device, the ONU node of the optical splitter, the ONU node of the optical fiber distribution frame, the ONU node of the optical fiber direct-fusion box and a single ONU device are sequentially connected through optical fibers, characterized in that: The communication system also includes a front-end sensing module and a plurality of terminal sensing modules, the optical fiber distribution frame and the optical fiber direct fuse box are provided with nodes corresponding to the front-end sensing modules, the optical fiber direct fuse box is also provided with nodes corresponding to a single terminal sensing module one by one, the connecting optical fiber between the corresponding node of the optical fiber distribution frame and the corresponding node of the optical fiber direct fuse box of the front-end sensing module forms the front-end outgoing sensing optical fiber of the front-end sensing module, the connecting optical fiber between the node corresponding to the front-end sensing module of the optical fiber direct fuse box and a terminal sensing module forms the terminal outgoing sensing optical fiber of the terminal sensing module, the connecting optical fiber between the terminal sensing module and the node corresponding to the terminal sensing module of the optical fiber direct fuse box forms the terminal loop sensing optical fiber of the terminal sensing module, the connecting optical fiber between the remaining terminal sensing modules and the node corresponding to the previous terminal sensing module of the optical fiber direct fuse box forms the terminal outgoing sensing optical fiber of the remaining terminal sensing modules, and the connecting optical fiber between the remaining terminal sensing modules and the corresponding nodes of the optical fiber direct fuse box forms the terminal loop sensing optical fiber of the remaining terminal sensing modules; Wherein, the connecting optical fiber between the ONU node of the optical fiber distribution frame and the ONU node of the optical fiber direct fuse box is a multi-core optical cable optical fiber, the multi-core optical cable optical fiber is a multi-core micro-cable optical fiber, and the front-end outgoing path sensing optical fiber is a spare optical fiber or a redundant optical fiber in the multi-core optical cable; Among them, part or all of the connecting optical fibers between the ONU node of the optical fiber direct fuse box and the ONU are multi-core optical cable optical fibers, the multi-core optical cable optical fibers are multi-core micro-cable optical fibers, and the terminal outgoing path sensing optical fibers and the terminal loop sensing optical fibers are spare optical fibers or redundant optical fibers in the multi-core optical cable optical fibers.

7. A fiber-to-desktop communication system with sensing and monitoring functions according to claim 6, wherein: The communication system also includes a front-end loop sensing optical fiber, which is a connecting optical fiber between a node corresponding to the last end sensing module of the optical fiber direct fuse box and another node corresponding to the front-end sensing module of the optical fiber distribution frame. The front-end sensing module and another node corresponding to the optical fiber distribution frame are connected via an optical fiber.

8. A fiber-to-desktop communication system with sensing and monitoring functions according to claim 7, wherein: Part or all of the optical fibers between the ONU node of the optical fiber distribution frame and the ONU node of the optical fiber direct fuse box are realized by multi-core optical cable optical fibers, the multi-core optical cable optical fibers are multi-core micro-cable optical fibers, and the front-end loop sensing optical fibers are spare optical fibers or redundant optical fibers in the multi-core optical cable optical fibers.

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