JP4110136B2 - Optical transmission line in the building - Google Patents

Description

  The present invention relates to an in-building optical transmission line, and more particularly to an in-building optical transmission line composed of an optical cable and a distributor.

  For the purpose of using LAN (Local Area Network) and the like, optical cables are often laid in buildings, particularly condominiums or office buildings. The optical cable laying method is provided to building residents, tenants and the like by drawing a branch line optical cable branched from a trunk line optical cable into a building and branching the branch line optical cable by a distributor or the like.

  Conventionally, when an optical cable is laid in a building, it is necessary to pierce the floor wall of each floor of the building and lay the optical cable in the height direction of the building. For this purpose, first, the floor wall of each floor is inspected by non-destructive inspection using X-rays, and the positions of electric cables and pipes embedded in the floor wall are examined in advance. And the method of piercing a floor wall avoiding those places, installing piping in the hole, and laying an optical cable in piping is performed.

  Drilling holes in the floor walls of each floor of the building has a problem that the construction period and cost increase because a preliminary survey by non-destructive inspection or the like and a large-scale construction due to the thick wall of the floor are required. An object of the present invention is to provide an in-building optical transmission line capable of laying an optical cable in a short period of time and at a low cost to a resident of the building.

An optical transmission line in a building according to the present invention is connected to a branch optical cable drawn into a building from a trunk optical cable, a floor distributor arranged in the building and branching the branch optical cable to each floor of the building, and a floor distributor Optical fiber cable laid on each floor of the building, a door distributor that is arranged on each floor of the building and branches the optical fiber cable to each target door of the building, and connected to the door distributor, and each target door of the building The floor distributor distributes many units according to the amount of data bits per unit time required for each floor, with respect to the total number of data bits that can be transmitted per unit time using branch line optical cables. For floors that require the amount of data bits per hour, a large amount of data bits per unit time, and for floors that require a small amount of data bits per unit time Assign the Tabitto amount has an optical band control circuit for distributing the same or different per unit time data bit amount for each floor, Kaibetsu optical cable is arranged in the elevator hoistway of a building, door-to-door distributor, the floor For the total number of data bits per unit time allocated to the unit, there are many units for target units that require a large amount of data bits per unit time , depending on the amount of data bits per unit time required for each target unit. Light that allocates a small amount of data bits per unit time to a target unit that requires a small amount of data bits per unit time, and distributes the same or different amount of data bits per unit time to each target unit A band control circuit is included.

  Moreover, it is preferable that the floor-specific optical cable of the in-building optical transmission path according to the present invention is connected to the door-to-door distributor through a fire prevention hole provided in the elevator hoistway of the building.

According to the optical transmission line in a building according to the present invention, the optical cable for each floor is arranged in the elevator hoistway of the building. It becomes easy. Therefore, it is possible to provide an in-building optical transmission line capable of laying an optical cable in a short period of time and with low-cost construction for residents in the building.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of an in-building optical transmission path 10 arranged in a building 8, particularly a building 8 having a plurality of floors such as a condominium or an office building. In the following, the building 8 is a four-story building, but other floors may be used. Moreover, although the in-building optical transmission line 10 is introduced from the basement of the building 8, it may be from the ground or from a higher level.

  The intra-building optical transmission line 10 includes a branch optical cable 12 drawn into the building 8 from a trunk optical cable (not shown), a floor distributor 14 arranged in the building 8 and branching the branch optical cable 12 to each floor of the building 8; A floor optical cable 16 connected to the floor distributor 14 and laid on each floor of the building 8, and a door distributor 18 arranged on each floor of the building 8 and branching the floor optical cable 16 to each target door 22 of the building 8. And a door-to-door optical cable 20 connected to the door-to-door distributor 18 and laid on each target door 22 of the building 8.

  The branch optical cable 12 is an optical cable having a function of transmitting data communication capacity data of a trunk optical cable (not shown) into the building 8. The optical cable used for the branch line optical cable 12 is generally made of a core wire made of plastic or high-purity glass and covered with a synthetic resin or the like. Although the number of branch line optical cables 12 shown in FIG. 1 is one, it is needless to say that there may be a plurality.

  The floor distributor 14 is an optical distributor having a function of branching the branch line optical cable 12 into a plurality of floor optical cables 16. The floor distributor 14 has an input side connection terminal to which the branch line optical cable 12 is connected and an output side connection terminal to which the floor optical cable 16 is connected. The input side connection terminal and the output side connection terminal are connected by an optical wiring circuit. ing. In FIG. 1, the floor distributor 14 is arranged outside the elevator hoistway 24, but may be arranged in the elevator hoistway 24, inside the building 8, or outdoors. The floor distributor 14 is generally composed of an MDF (Main Distribution Frame) device, a PON (Passive Optical Network) device, or the like.

  The floor distributor 14 has a switching circuit that switches between a case where one branch optical cable 12 is drawn and a case where a plurality of branch line optical cables 12 are drawn. Here, when a plurality of branch line optical cables 12 are connected, the floor distributor 14 has an optical switching circuit. This exchange circuit is a circuit for transmitting data transmitted by a specific branch line optical cable 12 to a terminal such as a designated resident's personal computer. In addition, when a certain resident wants to draw an optical cable for exclusive use, it is possible to provide the floor distributor 14 specially. Furthermore, the floor distributor 14 also has an optical band control circuit. This control circuit can evenly distribute the data communication capacity data transmitted by the branch line optical cable 12 to the optical cables 16 for each floor, or can set a different data communication capacity for each optical cable 16 for each floor. It is.

  The floor-specific optical cable 16 is an optical cable having a function of transmitting data communication capacity data of the branch line optical cable 12 to each floor of the building 8. The optical cable used for the floor-specific optical cable 16 generally has the same configuration as that of the branch line optical cable 12 described above. The floor-specific optical cable 16 is arranged in the elevator hoistway 24 so as not to obstruct the operation of the elevator 28. For example, you may wind and arrange | position around the guide wire etc. which are installed in the hoistway.

  In order to draw the floor optical cable 16 into the elevator hoistway 24, it is necessary to pass through the wall of the elevator hoistway 24. Since the wall of the elevator hoistway 24 is thinner than the floor wall, it can be easily penetrated. Alternatively, a hole 26 provided in the elevator hoistway 24 for fire protection can be used. A method is used in which a pipe is passed through the fire-proof hole 26 and the optical fiber cable 16 is passed through the pipe. In addition, an operation panel of the elevator 28 can be used to pass the floor-specific optical cable 16. When passing directly through the fire prevention hole 26 without installing a pipe, the tubular adapter through the floor optical cable 16 may be fitted into the fire prevention hole 26, filled with putty or the like, and fixed. The adapter is made of synthetic resin, ceramics, metal, or the like.

  It is preferable to arrange one optical cable 16 for each floor on each floor. This is because the arrangement is easy and the arrangement space is small. Moreover, since it can install regardless of the number of the target houses 22, the prior survey of the target houses 22 is unnecessary, and it is easy to standardize the construction. Of course, the floor-specific optical cables 16 are not limited to one on each floor, and a plurality of floor-side optical cables 16 can be arranged on each floor.

  The door distributor 18 is an optical distributor having a function of branching the floor optical cable 16 into a plurality of door optical cables 20. The door distributor 18 has an input side connection terminal for connecting the floor-side optical cable 16 and an output side connection terminal for connecting the door-side optical cable 20, and the input side connection terminal and the output side connection terminal are connected by an optical wiring circuit. . The door divider 18 has an optical band control circuit. The control circuit can evenly distribute the data communication capacity data transmitted by the floor-specific optical cable 16 to the individual optical cables 20, or can set different data communication capacity for each individual optical cable 20. . Although the door-to-door distributor 18 shown in FIG. 1 is arranged on the ceiling outside the elevator hoistway 24, it may be arranged in the elevator hoistway 24 or on the floor.

  The door-to-door optical cable 20 is connected to the door-to-door distributor 18 and is laid on each target door 22 in the building 8. The optical cable used for the door-to-door optical cable 20 generally has the same configuration as the branch line optical cable 12 described above. The door-to-door optical cable 20 is connected to a converter such as a media converter, converts the optical signal of the door-to-door optical cable 20 into an electric signal, and transmits the electric signal to a terminal such as a resident's personal computer as each target door 22. Also. In FIG. 1, one door-to-door optical cable 20 is disposed in each target door 22, but a plurality of door-to-target optical cables 20 may be disposed. Furthermore, when the non-target door becomes the target door 22 in the future, the door-to-door optical cable 20 may be drawn from the door-to-door distributor 18.

  Next, the operation of the embodiment according to the present invention will be described. When a data communication capacity of, for example, 1 Gbps is transmitted to the four-story building 8 by the branch line optical cable 12, for example, if a resident in the building 8 needs the same data communication capacity, the floor distributor 14 Each floor is evenly distributed at 250 Mbps. In addition, when tenants or the like occupy each floor and need different data communication capacities, for example, the first floor is 100 Mbps, the second floor is 200 Mbps, the third floor is 300 Mbps, and the fourth floor is 400 Mbps. it can.

  The data communication capacity distributed to each floor is transmitted to each floor by the floor optical cable 16. The door distributor 18 distributes the data communication capacity transmitted by the floor optical cable 16 to each target house 22. For example, when 400 Mbps transmission is performed for the fourth floor of the building 8 using the floor-specific optical cable 16, there are four target houses 22 to be subject to data communication on the fourth floor, and the residents of each target house 22 have the same data communication capacity. Can be equally distributed to each target house 22 by 100 Mbps. Further, when the data communication capacity required by the residents of each target house 22 is different, different data communication capacities such as 200 Mbps, 100 Mbps, 75 Mbps, and 25 Mbps can be distributed.

  In addition, according to the in-building optical transmission line 10 according to the present invention, the floor-specific optical cable 16 is disposed in the elevator hoistway 24 that is a fire prevention section, and thus has a fire resistance effect.

It is a figure which shows the optical transmission line in a building which is embodiment which concerns on this invention.

Explanation of symbols

  8 Building, 10 Optical transmission line in building, 12 Branch line optical cable, 14th floor distributor, 16th floor optical cable, 18 doorside distributor, 20 doorlight cable, 22 target door, 24 elevator hoistway, 26 fire prevention hole, 28 elevator .

Claims (2)

A branch optical cable drawn into the building from the trunk optical cable, and
Floor distributors arranged in the building and branching the branch line optical cable to each floor of the building,
Floor-specific optical cables connected to floor-level distributors and laid on each floor of the building,
A door-to-door distributor that is arranged on each floor of the building and branches the optical cable by floor to each target house in the building;
A door-to-door optical cable connected to a door-to-door distributor and laid on each target house in the building;
In an optical transmission line in a building comprising
The floor distributor distributes the total number of data bits that can be transmitted per unit time over a branch line optical cable to the floor that requires a large amount of data bits per unit time , depending on the data bit amount per unit time required by each floor. Allocates a large amount of data bits per unit time, assigns a small amount of data bits per unit time to floors that require a small amount of data bits per unit time, and distributes the same or different amount of data bits per unit time to each floor Having an optical bandwidth control circuit,
The floor-specific optical cable is placed in the elevator hoistway of the building,
Door-to-door distributor for the total number of allocated time unit per data bit quantity in that floor, as needed to unit time per data bit quantity of each target door requires per data bit amount much unit time Target units are assigned a large amount of data bits per unit time, and target units that require a small amount of data bits per unit time are assigned a small amount of data bits per unit time. building optical transmission line, characterized in that it comprises an optical band control circuit to distribute the data bit amount. In the building optical transmission line according to claim 1,
The optical transmission line in a building is connected to a door-to-door distributor through a fire prevention hole provided in the elevator hoistway of the building.

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