JP7323391B2 - Wiring design system - Google Patents

Description

TECHNICAL FIELD The present invention relates to a wiring design system and the like, and more particularly to support for CATV branch wiring design.

CATV networks are currently transitioning from hybrid fiber coaxial (HFC) systems to fiber to the home (FTTH) systems. The HFC system is a system in which an optical fiber is laid as a trunk line and a coaxial cable is drawn from a utility pole to each subscriber's home. Each area (node) is provided with a node amplifier that converts and amplifies an optical signal into an electrical signal. The electric signal converted by the node amplifier is coaxially branched into a predetermined number of branches by a branching device (tap-off) provided on the utility pole, and transmitted to each subscriber's home via a coaxial cable.

On the other hand, the FTTH system is a system that uses optical fibers from trunk lines to utility poles and from utility poles to each subscriber's home. In the FTTH system, a branching device called a drop closure is used in place of the above-mentioned branching device (tap-off), and a coupler mounted in this branching device (drop closure) branches the optical fiber and leads to each subscriber's house. . FTTH will dramatically increase the amount of information transmission, and will be able to handle video transmission of 4K/8K and the like.

CATV contractors and the like consider the distance and positional relationship from the utility pole, which is the branching point, to the subscriber's house, etc., and design how to branch and wire. Such wiring design is currently considered based on some rules and designers' experiences. For example, in Patent Document 1, a straight line formula for a pole arrangement route is determined, and pole arrangement position data indicating the position of the pole arrangement on the straight line, subscriber house position data indicating each position of a specified number of subscriber houses, and the Calculate the sum of the distances from each position of the linear formula and the subscriber's house to the pole arrangement position, and determine the turnout arrangement position with the pole arrangement position that minimizes this sum as the turnout arrangement position for the specified number of subscriber's homes. system is described.

Japanese Patent No. 2788808

However, the technology disclosed in Patent Literature 1 deals with coaxial branching of the old system, and does not take into consideration the case of rearranging the branching device, as in the case of converting existing wiring to FTTH.

The present invention has been made in view of the above problems, and it is possible to easily reassign subscriber homes when replacing or newly installing a turnout, such as when converting an existing HFC system to FTTH. It aims at providing a possible wiring design system.

The first invention for solving the above-mentioned problems is a drawing acquisition means for acquiring drawing data including map data and an existing wiring diagram, and information on the number of subscribers belonging to each turnout used for the existing wiring. current subscriber number acquisition means for acquiring current subscriber number data; allocation calculation means for newly obtaining allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition; and said allocation calculation and output means for outputting a result of calculation by means, wherein the allocation calculation means allocates each existing turnout to a turnout to be replaced or newly installed, and allocates one existing turnout to a plurality of branches to be replaced or newly installed. This wiring design system is characterized by permitting allocation to a device .

According to the wiring design system of the first invention, map data and drawing data including existing wiring diagrams are acquired, and information on the number of subscribers belonging to each turnout (for example, tap-off in the HFC system) used for existing wiring is acquired, and the number of subscribers assigned to each branching device to be replaced or newly installed (for example, a drop closure in the FTTH system) is newly obtained so as to satisfy a predetermined condition, and the calculation result is obtained. can be output. As a result, when replacing or newly installing a turnout used for existing wiring, it is possible to easily reassign subscriber homes by using the current number of subscribers data of the existing turnout. It is possible to support wiring design when migrating to a new system or installing a new turnout in existing wiring.

A second aspect of the invention is a drawing acquiring means for acquiring drawing data including map data and an existing wiring diagram, and acquiring current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. means for acquiring the number of current subscribers; means for calculating the number of subscribers newly assigned to each branching device to be replaced or newly installed so as to satisfy a predetermined condition; and said conditions include a condition relating to the upper limit of the number of subscribers to be allocated to each turnout to be replaced or newly installed, and said allocation calculation means includes one existing turnout to be replaced or newly installed. Wiring design characterized by comparing the total number of subscribers of all existing turnouts, which is less than or equal to the total number of existing turnouts assigned to the turnout, with the upper limit of the number of subscribers assigned to each turnout to be replaced or newly installed. System . As a result, in addition to obtaining the same effect as the first invention, it becomes possible to perform wiring design according to the number of branches and the like.
Moreover, it is preferable that the allocation calculation means sequentially focus on the existing turnout from the farthest one from the base point of the installation route.

A third aspect of the invention is a drawing acquiring means for acquiring drawing data including map data and an existing wiring diagram, and acquiring current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. means for acquiring the number of current subscribers; means for calculating the number of subscribers newly assigned to each branching device to be replaced or newly installed so as to satisfy a predetermined condition; and a display means for displaying the number of current subscribers assigned to the existing turnout on the map using numbers and arranging the number of current subscribers on the residential side of the map. It is a wiring design system . As a result, the operator can design new wiring while checking the number of subscribers belonging to the existing turnout.

In addition, it is desirable to further include determination means for determining the placement position of the branching device to be replaced or newly installed. As a result, when installing a new system, it is possible to easily know where the new turnout should be placed.

It is desirable to further include correction means for receiving corrections to the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed obtained by the allocation calculation means. As a result, the operator can manually modify the wiring design, and various cases can be flexibly dealt with.

It is preferable that the existing branching device is a tap-off in HFC, and the branching device to be replaced or newly installed is a drop closure in FTTH. As a result, it is possible to provide a wiring design system having functions specialized for transition from the HFC system to the FTTH system in the CATV network.
A fourth aspect of the present invention is a drawing acquisition means for acquiring drawing data including map data and an existing wiring diagram, and current subscriber number data, which is information on the number of subscribers belonging to each turnout used for the existing wiring. means for acquiring the number of current subscribers; means for calculating the number of subscribers newly assigned to each branching device to be replaced or newly installed so as to satisfy a predetermined condition; means, wherein the condition includes a condition regarding the distance between adjacent turnouts.
A fifth aspect of the present invention is a drawing acquiring means for acquiring drawing data including map data and an existing wiring diagram, and acquiring current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. means for acquiring the number of current subscribers; means for calculating the number of subscribers newly assigned to each branching device to be replaced or newly installed so as to satisfy a predetermined condition; wherein, when the distance between adjacent existing turnouts is greater than or equal to a predetermined distance, each subscriber's house belonging to the existing turnout is replaced with another branch or a new branch calculating an allocation of the number of subscribers to belong to a device.
A sixth aspect of the present invention comprises drawing acquisition means for acquiring drawing data including map data and an existing wiring diagram, and current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. means for acquiring the number of current subscribers; means for calculating the number of subscribers newly assigned to each branching device to be replaced or newly installed so as to satisfy a predetermined condition; wherein the output means draws on a map a frame surrounding the existing turnout assigned to each turnout to be replaced or newly installed, which is calculated by the allocation calculation means. System.

In a seventh aspect of the present invention, the computer acquires drawing data including map data and existing wiring diagrams, and acquires current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. and assigning each of the existing turnouts to a turnout to be replaced or newly installed, and allowing one existing turnout to be assigned to a plurality of turnouts to be replaced or newly installed, each of the turnouts to be replaced or newly installed and the step of outputting the calculation result of the subscriber number assignment belonging to each branching device to be replaced or newly installed. It is characterized by a wiring design method.
In an eighth aspect of the invention, the computer acquires drawing data including map data and an existing wiring diagram, and acquires current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. and the total number of all existing turnouts less than or equal to the total number of existing turnouts assigned to the replacement or new turnout, including the one existing turnout of interest, for each branch to be replaced or newly installed Predetermined conditions, including conditions relating to the upper limit of the number of subscribers to be assigned to each replaced or new turnout, relative to the upper limit of the number of subscribers to be assigned to each turnout to be replaced or new and a step of outputting a calculated result of assigning the number of subscribers belonging to each branching device to be replaced or newly installed.
In a ninth aspect of the invention, the computer acquires drawing data including map data and an existing wiring diagram, and acquires current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. a step of displaying the number of current subscribers assigned to the existing turnout on a map using numbers so that the number of current subscribers is arranged on the residential side of the map; including the steps of newly determining the allocation of the number of subscribers belonging to the branching device so as to satisfy a predetermined condition; and outputting the calculation result of the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed. This wiring design method is characterized by:
In a tenth aspect of the invention, the computer acquires drawing data including map data and an existing wiring diagram, and acquires current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. obtaining a new allocation of the number of subscribers belonging to each branch to be replaced or newly installed so as to satisfy a predetermined condition including a condition relating to the distance of an adjacent branch; and each branch to be replaced or newly installed. and a step of outputting a calculated result of assigning the number of subscribers belonging to each device.
In an eleventh aspect of the invention, a computer acquires drawing data including map data and an existing wiring diagram, and acquires current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. and, if the distance between the adjacent existing turnouts is greater than a predetermined distance, said subscriber's homes belonging to said existing turnout belong to different exchanged or newly installed turnouts. a step of calculating the allocation of numbers and newly determining the allocation of the number of subscribers belonging to each turnout to be replaced or newly installed so as to satisfy a predetermined condition; and the number of subscribers belonging to each turnout to be replaced or newly installed. and a step of outputting a calculation result of assignment of .
In a twelfth invention, a computer obtains drawing data including map data and an existing wiring diagram, and obtains current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. a step of newly determining the allocation of the number of subscribers belonging to each turnout to be replaced or newly installed so as to satisfy a predetermined condition; and a calculated existing branch allocated to each turnout to be replaced or newly installed. and a step of drawing a frame surrounding the switch on a map and outputting a calculation result of allocation of the number of subscribers belonging to each switch to be replaced or newly installed.

According to the wiring design method of the seventh to twelfth inventions, a computer is used to acquire map data and drawing data including an existing wiring diagram, and each turnout used for existing wiring (for example, a tap-off in the HFC system) ), and allocate the number of subscribers belonging to each branching device to be replaced or newly installed (for example, a drop closure in the FTTH system) so as to satisfy a predetermined condition. , and output the calculation result. This makes it possible to easily reassign subscriber homes when replacing or installing new turnouts used in existing wiring, and when migrating to a new system or installing new turnouts in existing wiring. It is possible to support the wiring design in the case of, for example,

A thirteenth aspect of the present invention comprises a computer, drawing acquisition means for acquiring drawing data including map data and an existing wiring diagram, information on the number of subscribers belonging to each branching device (for example, tap-off in the HFC system) used for the existing wiring A current subscriber number acquisition means for acquiring current subscriber number data, and new allocation of the number of subscribers belonging to each branching device to be replaced or newly installed (for example, a drop closure in the FTTH system) so as to satisfy a predetermined condition. and an output means for outputting the calculation results of the allocation calculation means, wherein the allocation calculation means assigns each of the existing turnouts to a turnout to be replaced or newly installed. , one existing turnout can be assigned to a plurality of turnouts to be replaced or newly installed .
A fourteenth invention comprises a computer, drawing acquisition means for acquiring drawing data including map data and an existing wiring diagram, and current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. means for acquiring the number of current subscribers to be acquired; allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition; and an output for outputting the calculation results of the allocation calculation means wherein the conditions include conditions regarding the upper limit of the number of subscribers to be allocated to each turnout to be replaced or newly installed, and the allocation calculation means includes one existing turnout of interest. , the total number of subscribers of all existing switches up to and including the total number of existing switches assigned to the replaced or new switch shall be compared with the upper limit of the number of subscribers assigned to each replaced or new switch. It is a program characterized by
A fifteenth invention comprises a computer, drawing acquisition means for acquiring drawing data including map data and an existing wiring diagram, and current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. means for acquiring the number of current subscribers to be acquired; allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition; and an output for outputting the calculation results of the allocation calculation means The computer displays the number of current subscribers assigned to the existing turnout on a map using numbers, and the number of current subscribers is displayed on the residential side of the map. The program is characterized by further functioning as display means for placement.
A sixteenth invention comprises a computer, drawing acquisition means for acquiring drawing data including map data and an existing wiring diagram, and current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. means for acquiring the number of current subscribers to be acquired; allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition; and an output for outputting the calculation results of the allocation calculation means A program for functioning as a means, wherein the condition includes a condition regarding the distance between adjacent turnouts.
A seventeenth invention comprises a computer, drawing acquisition means for acquiring drawing data including map data and an existing wiring diagram, and current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. means for acquiring the number of current subscribers to be acquired; allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition; and an output for outputting the calculation results of the allocation calculation means wherein, when the distance between adjacent existing turnouts is a predetermined distance or more, the allocation calculation means determines that the subscriber homes belonging to the existing turnouts are separated from each other. is a program characterized by calculating the allocation of the number of subscribers so as to belong to a turnout to be replaced or newly installed.
An eighteenth invention comprises a computer, drawing acquisition means for acquiring drawing data including map data and an existing wiring diagram, and current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring. means for acquiring the number of current subscribers to be acquired; means for calculating a new allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition; wherein the output means draws on a map a frame surrounding the existing turnout assigned to each turnout to be replaced or newly installed, calculated by the allocation calculation means. It is a program characterized by

The thirteenth to eighteenth inventions enable a computer to function as the wiring design system of the first to sixth inventions.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a wiring design system or the like that can easily reassign subscriber homes when replacing or newly installing a turnout.

A diagram showing the appearance of the wiring design system 1 Block diagram showing the functional configuration of the wiring design system 1 A diagram showing an example of a CAD drawing 30 including map data and an existing wiring diagram A diagram showing an example of current subscriber number data 40 A diagram showing a part of the existing wiring diagram 50 Diagram explaining distance conditions in closure groups A diagram showing a calculation result (output result) by the allocation calculation process 24 FIG. 6 shows a state in which the calculated closure group frames g1 and g2 of the closure groups G1 and G2 are drawn with respect to the existing wiring diagram 50 shown in FIG. 1 is a flow chart showing the overall flow of a wiring design method according to the present invention; Flowchart showing details of closure assignment processing in step S106 of FIG. A diagram showing an example of drawing a closure group frame Diagram explaining how to draw a closure group frame Example of diagram showing closure group slots and number of subscribers on a map Flowchart showing a specific example of closure assignment processing when the branch upper limit is set to 7 and the distance between adjacent tap-offs is set to within 100 m. Flowchart following FIG.

Preferred embodiments of the present invention will be described in detail below with reference to the drawings. In the present embodiment, an example of wiring design when shifting from the existing HFC system to the FTTH system in a CATV network will be described. HFC type turnouts (existing turnouts) are pole taps (hereinafter referred to as tap-offs), and FTTH type turnouts (replacement or new turnouts) are drop closures (hereinafter referred to as closures).

FIG. 1 is a diagram showing the hardware configuration of a wiring design system 1. As shown in FIG. As shown in FIG. 1, the wiring design system 1 includes a computer or the like including a control unit 101, a storage unit 102, a communication unit 103, an input unit 104, a display unit 105, a peripheral device I/F unit 106, a bus 107, and the like. Consists of The control unit 101 , storage unit 102 , communication unit 103 , input unit 104 , display unit 105 and peripheral device I/F unit 106 are connected by bus 107 . However, the configuration of the wiring design system 1 is not limited to this, and can take various configurations as appropriate.

The control unit 101 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU calls a program stored in the storage unit 102 , ROM, recording medium, or the like to a work memory area on the RAM, executes the program, and drives and controls each unit connected via the bus 107 . The ROM permanently holds programs such as a computer boot program and BIOS, data, and the like. The RAM temporarily holds loaded programs and data, and has a work area used by the control unit 101 to perform various processes. The control unit 101 functions as each means of the wiring design system 1 by reading and executing the above program.

Specifically, as shown in FIG. 2, the control unit 101 of the wiring design system 1 includes drawing acquiring means (drawing acquiring process 21), current subscriber number acquiring means (current subscriber number acquiring process 22), number of subscribers display means (number of current subscribers display process 23), allocation calculation means (allocation calculation process 24), determination means (turnout arrangement determination process 25), output means (output process 26), and correction means (correction process 27 ), etc. Details of each process will be described later.

The storage unit 102 of the wiring design system 1 is, for example, a storage device such as a hard disk drive, a solid state drive, or a flash memory. The storage unit 102 stores programs executed by the control unit 101, data necessary for executing the programs, an operating system, and the like. These program codes are read by the control unit 101 as necessary, transferred to the RAM, and read and executed by the CPU.

The storage unit 102 stores information such as drawing data and current subscriber number data. The contents of these data will be described later.

A communication unit 103 has a communication control device and a communication port, and controls communication with a network or the like.

The input unit 104 is, for example, a pointing device such as a keyboard or a mouse, or a touch panel provided integrally with a display, and inputs data to the control unit 101 .
The display unit 105 includes a display device such as a liquid crystal panel and a logic circuit (such as a video adapter) for executing display processing in cooperation with the display device. be displayed on a display device.

A peripheral device I/F unit 106 is a port for connecting a peripheral device, and transmits and receives data to and from the peripheral device via the peripheral device I/F unit 106 . The form of connection with peripheral devices may be wired or wireless.

Next, a functional configuration of the wiring design system 1 will be described with reference to FIG. As shown in FIG. 2, the wiring design system 1 includes drawing acquisition processing 21, current subscriber count acquisition processing 22, current subscriber count display processing 23, allocation calculation processing 24, turnout placement determination processing 25, output processing 26, And the correction process 27 is executed.

In drawing acquisition processing 21 , the control unit 101 acquires map data and drawing data including existing wiring diagrams via the storage unit 102 or a storage medium, or the communication unit 103 . The map data and the existing wiring diagram are, for example, CAD data as shown in FIG. In the present embodiment, the existing wiring diagram is drawing data in which the existing HFC system wiring route, coaxial branch points (places where the branch devices are installed), etc. are drawn on a map. In Fig. 3, "〇" indicates a utility pole (turnout), "△" indicates a node amplifier, the main line is a thick line (optical fiber), the wiring from the utility pole (turnout) to the subscriber's house is a dotted line, and the wiring between the utility poles. is indicated by a dashed line.

In the current subscriber number acquisition process 22, the control unit 101 acquires the current subscriber number data 40 (see FIG. 4). The current subscriber number data 40 is information on the number of subscribers belonging to each branch (tap-off) used in the existing wiring (HFC system). The current subscriber number data 40 is linked to the turnout objects (A1, A2, A3, A4, . . . in FIG. 5) in the existing wiring diagram 50 of the drawing data. Alternatively, the current subscriber number data 40 may be input by the user via the input unit 104, or may be read from a storage medium or the like.

FIG. 4 is a diagram showing an example of current subscriber number data 40. As shown in FIG. In FIG. 4, A1 to A11 are identification information for identifying each tap-off (existing branch). The number of current subscribers is the number of subscribers belonging to each tap-off (the number of subscriber homes connected to each tap-off). In the example of FIG. 4, the number of subscribers belonging to tap-off A1 is 4, the number of subscribers belonging to tap-off A2 is 5, the number of subscribers belonging to tap-off A3 is 3, the number of subscribers belonging to tap-off A4 is 2, There are 4 subscribers belonging to tap-off A5, 5 subscribers belonging to tap-off A6, 3 subscribers belonging to tap-off A7, 6 subscribers belonging to tap-off A8, and 6 subscribers belonging to tap-off A9. The number is two, and the number of subscribers belonging to the tap-off A10 is one.

In the current subscriber number display process 23, the control section 101 displays the current subscriber number of the existing turnout (tap-off) on the map. Since the road side on the map is used as a drawing area for optical design such as closures, it is desirable to place the number of current subscribers on the residential side. Since many houses are small polygons such as squares, and many roads are linear or sectioned, the current subscriber number display processing 23 determines whether it is on the road side or on the residential side based on this. Current subscriber count display processing 23 displays the current subscriber count at a position, for example, 5 m from the tap-off.

FIG. 5 is a diagram showing an example of an existing wiring diagram 50. As shown in FIG. The existing wiring diagram 50 shows the layout of tap-offs A1, A2, A3, and A4 on a map showing a residential area, etc., and also shows the number of subscribers belonging to the tap-offs (the number of current subscribers) near the tap-offs. Tap-offs are usually installed on utility poles. Reference N1 is a node amplifier. As shown in FIG. 5, the number of current subscribers display processing 23 includes the number of subscribers "4" near the tap-off A1, the number of subscribers "5" near the tap-off A2, and the number of subscribers "3" near the tap-off A3. ”, and the number of subscribers “2” is displayed near the tap-off A4.

In the allocation calculation process 24, the control unit 101 newly allocates the number of subscribers (closure group) belonging to each branch (closure) to be replaced or newly installed when changing from HFC to FTTH so as to satisfy a predetermined condition. demand. Specifically, in order to replace an existing tap-off with a closure, which is a branching device for optical fiber, the control unit 101 regroups the acquired number of current subscribers of each tap-off so that it matches the number of branches of the closure. . At this time, the control unit 101 performs grouping based on a condition regarding the distance between branching devices (tap-offs). In addition, the control unit 101 performs grouping based on a condition regarding the upper limit of the number of subscribers to be assigned to each switch (closure) to be replaced or newly installed.

Specifically, the control unit 101 groups subscribers by a predetermined upper limit. The upper limit value is, for example, "7" when exchanging to a closure with "8" branches. This is because one terminal is left open as a spare. That is, the number of subscribers (the number of current subscribers) assigned to each tap-off is regrouped into a closure group with an upper limit of "7". Note that it is not necessary to secure spare terminals, and in this case, the upper limit is "8", which is the same as the number of branches.

In addition, when the distance between adjacent existing turnouts (tap-offs) is a predetermined distance or more, the control unit 101 allows each subscriber's house belonging to the existing turnouts (tap-offs) to be replaced or newly installed. Assign the subscription number to belong to the branch (closure). Specifically, if the distance between adjacent tap-offs exceeds a predetermined distance (eg, 100m), those tap-offs are grouped into separate closures. For example, if the distance between tap-off A1 and tap-off A2 is within 100 m, the same closure group is used, and if the distance between tap-off A1 and tap-off A2 is greater than 100 m, another closure group is used.

When grouping, not only the distance between adjacent tap-offs but also the distance limit of the installation route (for example, the total value of the distances between tap-offs is within 200 m) may be considered. For example, consider a case where A1, A2, . At this time, the distance between the tap-off An and the adjacent tap-off An-1 is within 100 m, and the total value D of the distances between tap-offs (D = "distance between A1 and A2" + "distance between A2 and A3" + · . . +"distance between An-1 to An") does not exceed the distance limit of the installation route (D≦200 m), group the tap-off An into the existing closure group G1. On the other hand, when the distance between the tap-off An and the adjacent tap-off An-1 exceeds 100 m, or when the total value D of the distances between the tap-offs exceeds the distance limit of the installation route (D>200 m), a new closure group G2 is created. and group An in the closure group G2.

In this way, by grouping in consideration of the distance limit of the laying route, as shown in FIG. 6, only the tap-offs existing within a predetermined distance range (tap-offs A1 to A7 in the example of the figure) belong to the same closure group. , the tap-off exceeding a predetermined distance range (tap-off B1 in the example of the figure) constitutes another closure group.

In the allocation calculation process 24, as shown in FIG. Grouping is started from the farthest tap-off (A1 in the example shown). The distance between the tap-off and the cluster closure can be obtained by linear distance. Assuming the tap-off position A (X1, Y1) and the existing node amplifier position N1 (X2, Y2), the direct distance is expressed by the following equation (1).

A-N1＝((X1-X2) ² +(Y1-Y2) ² ) ^1/2 …(1)

A specific calculation procedure for the closure group allocation in the allocation calculation process 24 will be described later.

FIG. 7 is a diagram showing a calculation result (output result) by the allocation calculation process 24. As shown in FIG.
"Input data" in table 60 in FIG. 7 indicates the number of subscribers (the number of current subscribers) assigned to each tap-off A1 to A10, which is current subscriber number data 40 shown in FIG. Also, "output result" in table 60 shows the closure group assignment result, showing one or more tap-offs assigned to each closure and the number of subscribers assigned to the closure group from the tap-offs. Closure groups are numbered as G1, G2, .

In the example of FIG. 7, closure group G1 is assigned 4 subscribers with tap-off A1 and 3 subscribers with tap-off A2 (3 out of 5 subscribers). Closure group G2 is assigned 2 subscribers with tap-off A3 (2 subscribers out of 5 subscribers), 3 subscribers with tap-off A3 and 2 subscribers with tap-off A4. Also, for the tap-offs A5 to A10 located in another area not shown in FIG. of which 3 subscribers) are assigned. Closure group G4 is assigned 2 subscribers with tap-off A6 (2 out of 5 subscribers), 3 subscribers with tap-off A7 and 2 subscribers with tap-off A8 (2 out of 6 subscribers). Closure group G5 is assigned 4 subscribers with tap-off A8 (4 out of 6 subscribers), 2 subscribers with tap-off A9 and 1 subscriber with tap-off A10. Also, the solid line frame and the dotted line frame shown in Table 60 indicate different areas.

In the turnout arrangement determination process 25, the control unit 101 determines the arrangement position of the turnout to be replaced or newly installed. For example, if there are multiple tap-offs in the closure group determined by the assignment calculation process 24, and the number of tap-offs is even, the tap-offs of the latitude, longitude, or the high (or low) value of the X and Y coordinates Let the position be the position of the drop closure. If the number of tap-offs is an odd number, the tap-off position near the center in latitude, longitude or X and Y coordinates is taken as the position of the drop closure. Alternatively, the tap-off position closest to the node amplifier may be the position of the drop closure.

In the output process 26 , the control unit 101 outputs the calculation result of the allocation calculation process 24 . For example, the control unit 101 draws on the map a frame (closure group frame) surrounding the existing turnout assigned to each turnout (closure) to be replaced or newly installed, which is calculated by the allocation calculation processing 24 . In addition, the output processing 26 may display the number of subscribers allocated to each branch (closure) to be replaced or newly installed, which is calculated by the allocation calculation processing 24, on a map. In addition, the control unit 101 may draw on the map the placement positions of the turnouts determined by the turnout placement determination process 25 .

FIG. 8 shows a wiring diagram 55 in which closure group frames g1 and g2, which are frame lines indicating the closure groups G1 and G2 calculated by the allocation calculation processing 24, are drawn in the existing wiring diagram 50 shown in FIG. ing. As shown in FIG. 7, since the closure group G1 includes the tap-off A1 and the tap-off A2, a closure group frame g1 is drawn surrounding the tap-offs A1 and A2 in the map. Also, since the closure group G2 includes the tap-off A2 and the tap-offs A3 and A4, a closure group frame g2 surrounding the tap-offs A2, A3 and A4 in the map is drawn.

In modification processing 27 , control unit 101 receives modification of the allocation (closure group) of the number of subscribers belonging to each branching device (closure) to be replaced or newly installed obtained by allocation calculation processing 24 . Modifications can be entered by the user via input unit 104 . Moreover, when recalculation is required due to correction, the allocation calculation process 24 is executed again.

Next, a wiring design method using the wiring design system 1 will be described.
First, the overall flow of processing will be described with reference to the flowchart of FIG.

First, the control unit 101 of the wiring design system 1 reads map data and existing wiring data (existing wiring diagram) from CAD (Computer Aided Design) (step S101). When the reading of the drawing is completed (step S102; Yes), the controller 101 stores the read drawing (map data and wiring data) in the RAM (step S103).

Next, the control unit 101 acquires information (current subscriber number data 40) on the number of subscribers (current subscriber number) assigned to each tap-off (existing branch) (step S104). The control unit 101 displays the number of current subscribers acquired in step S104 near each tap-off on the map (step S105).

In step S105, the control unit 101 analyzes the map data to distinguish between houses and roads, and arranges the number of current subscribers on the houses side. The control unit 101 displays the number of current subscribers at a position, for example, 5 m from the tap-off.

Next, the control unit 101 executes closure allocation calculation processing based on the read map and current subscriber number data 40, and obtains the number of subscribers to be allocated to the post-exchange turnout (closure) (step S106).

Here, the closure allocation calculation processing in step S106 will be described with reference to FIG. The closure assignment calculation process is performed in such a manner that numerical values are stored in the closure group column 63, the tap-off name columns 64, 66, 68, and the number of subscribers columns 65, 67, 69 of the output result of the table 60 shown in FIG. . The tap-off column 61 and current subscriber number column 62 of the input data in table 60 correspond to the tap-off column and current subscriber number column of the current subscriber number data 40 in FIG.

The control unit 101 first creates a closure group (G1) (step S201). The control unit 101 stores "G1" in the closure group column 63 of the table 60 of FIG. Further, it is determined whether or not there is an unassigned tap-off (whether or not there is a tap-off which is not assigned to any closure group) by referring to the number of current subscribers column 62 (step S202). If there is no unassigned tap-off (step S202; No), the process ends.

If there are unassigned tap-offs (step S202; Yes), the control unit 101 acquires the number of subscribers (current number of subscribers) of the first tap-off among the unassigned tap-offs (step S202). As for the method of determining the first tap-off, it is desirable to select the tap-off that is farthest from the base point (node amplifier N) on the installation route, as described above. In the examples of FIGS. 5 and 7, the tap-off A1 is the first tap-off.

The control unit 101 determines whether or not the number of subscribers of the target tap-off A1 (target tap-off) is equal to the upper limit of the number of subscribers of the closure group G1 (step S204). If it is equal to the upper limit (step S204;=upper limit), the tap-off name is stored in the tap-off name column of table 60, and the number of current subscribers of the target tap-off is stored in the subscriber number column (step S205). Specifically, in the table 60 of FIG. 7, the tap-off name "A1" is stored in the tap-off name column 64, and the number of current subscribers of the target tap-off A1 "4" is stored in the subscriber number column 65.

After that, the control unit 101 creates the next closure group (G2) (step S206) and returns to step S202. The next closure group G2 is stored in the closure group column 63 of the table 60 of FIG.

In step S204, if the number of subscribers of the target tap-off is greater than the upper limit of the number of subscribers of the closure group (step S204; greater than the upper limit), the number of subscribers of the closure group G1 created in step S201 is set as the upper limit, A value obtained by subtracting the upper limit from the number of subscribers of the target tap-off is set as the number of remaining subscribers of the target tap-off, and the next closure group (G2) is created (step S207). Then, the process returns to step S202. Specifically, in the table 60 of FIG. 7, the target tap-off "A1" is stored in the tap-off name column 64, the value of "the number of current subscribers of the target tap-off A1 - upper limit value" is stored in the number of subscribers column 65, The next closure group G 2 is stored in the closure group column 63 .

In step S204, if the number of subscribers of the target tap-off is less than the upper limit of the number of subscribers of the closure group (G1) (step S204; less than the upper limit), the target tap-off A1 is added to the number of subscribers of this closure group (G1). number of subscribers is stored (step S208). Specifically, in the table 60 of FIG. 7, the tap-off name column 64 stores the target tap-off "A1", and the subscriber number column 65 stores the value of "the number of current subscribers of the target tap-off A1".

After step S208, the control unit 101 determines whether or not there is an unassigned tap-off (step S209). If there is no unassigned tap-off (step S209; No), the assignment calculation process ends. If there is an unassigned tap-off (step S209; Yes), attention is paid to the tap-off adjacent to the target tap-off, and the distance condition with the adjacent tap-off is determined (step S210). The distance condition is, for example, whether the distance between tap-offs is within 100 m, or whether the distance limit (total value of the distance between tap-offs) of the installation route is satisfied (within 200 m). If the distance condition is not satisfied (step S210; No), the next group (G2) is created (step S206).

In step S210, if the distance condition is satisfied (step S210; Yes), the total number of subscribers when the number of subscribers of the adjacent tap-off is added to the closure group is obtained (the number of current subscribers of A1 + the current subscribers of A2). number), and the number is determined (step S211).

If the result of adding the number of subscribers of the adjacent tap-off to the closure group is equal to the upper limit of the number of subscribers of the closure group (step S211;=upper limit), the tap-off name is stored in the tap-off name column of Table 60. Then, the number of current subscribers of the target tap-off is stored in the number of subscribers column (step S212). Specifically, in the table 60 of FIG. 7, the tap-off name "A2" is stored in the tap-off name column 66, and the number of current subscribers of the target tap-off A2 is stored in the subscriber number column 67. After that, the next closure group (G2) is created (step S213), and the process returns to step S202.

In step S211, as a result of adding the number of subscribers of the adjacent tap-off to the closure group, if the number of subscribers of the closure group exceeds the upper limit (step S211; larger than the upper limit), in the tap-off name column of table 60 Store the tap-off name and store the value of the target tap-off in the number of subscribers column. Also, the value of the number of current subscribers of the adjacent tap-off A2 is defined as the number of current subscribers−(the sum of the number of subscribers of tap-offs A1 and A2 (Σ number of subscribers)−upper limit). Then, the next closure group (G2) is created (step S214). Then, the process returns to step S202.
Specifically, in the table 60 of FIG. 7, the tap-off name "A2" is stored in the tap-off name column 66, and the number of subscribers in the number of subscribers column 67 is (number of current subscribers of tap-off A2−(number of subscribers of tap-offs A1 and A2 Store the sum (Σ number of subscribers−upper limit), then create the next closure group (G2) and return to step S202.

In step S211, as a result of adding the number of subscribers of the adjacent tap-off to the closure group, if the number of subscribers of the closure group is less than the upper limit (step S211; less than the upper limit), tap-off The name is stored, the number of subscribers of the next tap-off is stored in the number of subscribers column (step S215), the process returns to step S202, and the steps after step S202 are repeated. Specifically, in the table 60 of FIG. 7, the tap-off name "A2" is stored in the tap-off name column 66, and (the number of current subscribers of tap-off A2) is stored in the subscriber count column 67. FIG. After that, it is determined whether or not there is an adjacent tap-off A3, and if the tap-off A3 satisfies the distance condition, the number of subscribers when the tap-off A3 is added to the closure group is determined (step S210). Then, processing is performed according to the determination result (steps S212 to S215). After this, the process returns to step S202, and is repeated until there is an unassigned tap-off.

When all the tap-offs A1 to A10 in Table 60 in FIG. 7 have been assigned to closure groups (step S202; No), the closure assignment calculation process in FIG. 10 ends. FIG. 7 shows the allocation calculation result.

After completing the closure allocation calculation process, the control unit 101 next performs the closure placement position determination process of step S107 in FIG. 9 (step S107). When there are multiple tap-offs in the closure group obtained by the processing in step S106, the closure placement position drops the tap-offs with high latitude, longitude or X and Y coordinates if the number of tap-offs is even. Position the closure. If the number of tap-offs is an odd number, the position of the drop closure is the tap-off whose latitude, longitude or X and Y coordinates are near the center. Alternatively, the tap-off closest to the node amplifier may be the position of the drop closure.

Next, the control unit 101 draws a closure group frame surrounding the existing turnout (tap-off) belonging to each closure group on the map (step S108).

FIG. 11 shows a rendering example of closure group frames g1, g2, and g3 corresponding to closure groups G1, G2, and G3. As for the drawing procedure, for example, when there are a plurality of tap-offs in the same closure group frame, the control unit 101 first draws a circle with a radius of 10 m around each tap-off as shown in FIG. , as shown in FIG. 12(b), surround each circle with a line that circumscribes them. A polygonal frame surrounding the entire closure group obtained in this manner is defined as a closure group frame. The circle drawn in FIG. 12(a) is not displayed as a virtual circle, and only polygons are displayed as shown in FIG. 12(b). Note that the size of the circle is an example, and other sizes may be used. Also, the frame line does not necessarily have to be a straight line, and may be a curved line.

Next, the control unit 101 of the wiring design system 1 accepts corrections to the calculated allocation (closure group frames) (step S109 in FIG. 9). If correction is unnecessary (step S109; No), the calculated closure allocation (table 60 in FIG. 7), closure placement positions, drawing results of closure group frames, etc. are stored in storage unit 102 (step S112), End the process.

In step S109, the user inputs a correction instruction (step S109; Yes), and when correction is input (step S110), the control unit 101 determines whether or not recalculation based on the content of correction is necessary (step S111). , if recalculation is necessary (step S111; Yes), the process returns to the closure assignment calculation process of step S106. If recalculation is unnecessary (step S111; No), the modified closure assignment and the like are stored in the storage unit 102 (step S112), and the process ends.

FIG. 13 is an example of a wiring diagram 80 obtained by processing according to the flowchart of FIG. Lines indicating houses and plots have been omitted for clarity.
As shown in the wiring diagram 80, numerical values L11 to L31 indicating the number of tap-off subscribers are displayed near each tap-off ("○" in the figure), and a closure group frame g11 calculated according to the flowchart of FIG. ~g20 is drawn.

14 and 15 are flowcharts showing a specific example of the closure allocation calculation processing program of FIG. The maximum number of branches of a closure, that is, the upper limit of the number of subscribers in a closure group is set to "7", and the distance condition is that the distance between adjacent tap-offs is within 100 m. Gm is the closure group name (closure group column 63 in FIG. 7), (Gm) is the tap-off allocation area in the closure group, An is the tap-off name (tap-off name columns 64, 66, 68 in FIG. 7), (An) is the tap-off (subscription number columns 65, 67, 69 in FIG. 7). m and n are positive integers.

The flowcharts of FIGS. 14 and 15 are for the case where the maximum branch number of the closure is "7", but it is not limited to this. The program is extensible. Moreover, the present invention can be applied not only to the wiring design when shifting from the HFC system to the FTTH system, but also to the case of changing the number of branches in the same system, or the wiring design according to the increase or decrease in the number of subscribers. It is possible to apply

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to such examples. It is obvious that a person skilled in the art can conceive of various modifications or modifications within the scope of the technical ideas disclosed in the present application, and these also belong to the technical scope of the present invention. Understood.

1: Wiring design system 21: Drawing acquisition process 22: Current subscriber number acquisition process 23: Current subscriber number display process 24: Allocation calculation process 25: Turnout arrangement determination Process 26... Output process 27... Correction process 30... Wiring diagram 40... Current subscriber number data 50... Existing wiring diagram 55... Existing wiring diagram 50 with closure group frames g1 and g2 60 ... Table 61 ... Tap-off column 62 ... Number of current subscribers column (number of subscribers of tap-off group)
63 Closure group columns 64, 66, 68 Tap-off name columns 65, 67, 69 Subscription number column 80 Wiring diagrams A1 to A10 showing closure group frames and current subscriber numbers, B1: Tap off (existing turnout)
G1, G2, G3 .
g1, g2, g3... Closure group frames L1, L2... Number of current subscribers of tap-off (existing turnout) N1... Existing node amplifier (cluster closure)

Claims (22)

drawing acquisition means for acquiring drawing data including map data and existing wiring diagrams;
current subscriber number acquisition means for acquiring current subscriber number data, which is information on the number of subscribers belonging to each branching device used in the existing wiring;
Allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition;
an output means for outputting a calculation result by the allocation calculation means;
with
The wiring design, wherein the allocation calculation means allocates each of the existing turnouts to a turnout to be replaced or newly installed, and permits allocation of one existing turnout to a plurality of turnouts to be replaced or newly installed. system. drawing acquisition means for acquiring drawing data including map data and existing wiring diagrams;
current subscriber number acquisition means for acquiring current subscriber number data, which is information on the number of subscribers belonging to each branching device used in the existing wiring;
Allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition;
an output means for outputting a calculation result by the allocation calculation means;
with
The conditions include conditions regarding the upper limit of the number of subscribers assigned to each switch to be replaced or newly installed,
The allocation calculation means replaces or newly installs the total number of subscribers of all existing turnouts less than or equal to the total number of existing turnouts allocated to a turnout to be replaced or newly installed, including one existing turnout of interest. A wiring design system characterized by comparing with the upper limit of the number of subscribers assigned to each branch . 3. The wiring design system according to claim 2, wherein said allocation calculation means sequentially focuses on existing turnouts in order from the furthest existing turnout from the base point of the wiring route. drawing acquisition means for acquiring drawing data including map data and existing wiring diagrams;
current subscriber number acquisition means for acquiring current subscriber number data, which is information on the number of subscribers belonging to each branching device used in the existing wiring;
Allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition;
an output means for outputting a calculation result by the allocation calculation means;
with
A wiring design system, further comprising display means for displaying the number of current subscribers assigned to an existing turnout on a map using numbers and arranging the number of current subscribers on the residential side of the map. 5. The wiring design system according to any one of claims 1 to 4, further comprising determining means for determining an arrangement position of said turnout to be replaced or newly installed. 6. The wiring according to any one of claims 1 to 5 , further comprising correction means for receiving a correction to the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed calculated by said allocation calculation means. design system. The existing branch is a tap-off in HFC,
7. The wiring design system according to any one of claims 1 to 6 , wherein the branching device to be replaced or newly installed is a drop closure in FTTH. drawing acquisition means for acquiring drawing data including map data and existing wiring diagrams;
current subscriber number acquisition means for acquiring current subscriber number data, which is information on the number of subscribers belonging to each branching device used in the existing wiring;
Allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition;
an output means for outputting a calculation result by the allocation calculation means;
with
The wiring design system , wherein the conditions include conditions regarding distances between adjacent turnouts . drawing acquisition means for acquiring drawing data including map data and existing wiring diagrams;
current subscriber number acquisition means for acquiring current subscriber number data, which is information on the number of subscribers belonging to each branching device used in the existing wiring;
Allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition;
an output means for outputting a calculation result by the allocation calculation means;
with
When the distance between adjacent existing turnouts is a predetermined distance or more, the allocation calculation means assigns each subscriber's house belonging to the existing turnout to another turnout to be replaced or newly installed. A wiring design system, characterized by calculating an allocation of the number of subscribers . drawing acquisition means for acquiring drawing data including map data and existing wiring diagrams;
current subscriber number acquisition means for acquiring current subscriber number data, which is information on the number of subscribers belonging to each branching device used in the existing wiring;
Allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition;
an output means for outputting a calculation result by the allocation calculation means;
with
The output means is
A wiring design system, wherein a frame surrounding an existing turnout assigned to each turnout to be replaced or newly installed is drawn on a map, which is calculated by the assignment calculation means. the computer
a step of obtaining drawing data including map data and an existing wiring diagram;
a step of acquiring current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring;
Each of the existing turnouts is assigned to a turnout to be replaced or newly installed, and a single existing turnout is allowed to be assigned to a plurality of turnouts to be replaced or newly installed, and a subscriber belonging to each turnout to be replaced or newly installed. a step of renewing the allocation of numbers so as to satisfy a predetermined condition;
a step of outputting a calculation result of the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed;
A wiring design method, comprising: the computer
a step of obtaining drawing data including map data and an existing wiring diagram;
a step of acquiring current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring;
Subscribing to each turnout to be replaced or newly installed, the total number of all existing turnouts less than or equal to the total number of existing turnouts to be allocated to the replaced or newly installed turnout, including the one existing turnout of interest. Allocation of the number of subscribers belonging to each replacement or new turnout as compared to the upper limit of the number of subscribers to meet predetermined conditions, including conditions relating to the upper limit of the number of subscribers to be assigned to each replacement or new turnout. a new step and
a step of outputting a calculation result of the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed;
A wiring design method, comprising: the computer
a step of obtaining drawing data including map data and an existing wiring diagram;
a step of acquiring current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring;
displaying the number of current subscribers assigned to the existing turnout on a map using numbers, with the number of current subscribers arranged on the residential side of the map;
a step of newly determining the allocation of the number of subscribers belonging to each turnout to be replaced or newly installed so as to satisfy a predetermined condition;
a step of outputting a calculation result of the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed;
A wiring design method, comprising: the computer
a step of obtaining drawing data including map data and an existing wiring diagram;
a step of acquiring current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring;
re-determining the allocation of the number of subscribers belonging to each turnout to be replaced or newly installed so as to satisfy predetermined conditions , including conditions relating to the distance of adjacent turnouts ;
a step of outputting a calculation result of the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed;
A wiring design method, comprising: the computer
a step of obtaining drawing data including map data and an existing wiring diagram;
a step of acquiring current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring;
If the distance between adjacent existing turnouts is greater than a predetermined distance, the number of subscribers is allocated so that each subscriber's home belonging to the existing turnout belongs to another turnout to be replaced or newly installed. calculating and newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition;
a step of outputting a calculation result of the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed;
A wiring design method, comprising: the computer
a step of obtaining drawing data including map data and an existing wiring diagram;
a step of acquiring current subscriber number data, which is information on the number of subscribers belonging to each turnout used in the existing wiring;
a step of newly determining the allocation of the number of subscribers belonging to each turnout to be replaced or newly installed so as to satisfy a predetermined condition;
A frame surrounding the calculated existing turnout assigned to each turnout to be replaced or newly installed is drawn on a map, and the calculation result of the allocation of the number of subscribers belonging to each turnout to be replaced or newly installed is output. a step;
A wiring design method, comprising: the computer,
Drawing acquisition means for acquiring drawing data including map data and existing wiring diagrams;
current subscriber number acquisition means for acquiring current subscriber number data, which is information on the number of subscribers belonging to each branching device used in the existing wiring;
Allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition;
output means for outputting a calculation result by the allocation calculation means;
A program for functioning as
The program, wherein the allocation calculation means allocates each of the existing turnouts to a turnout to be replaced or newly installed, and permits allocation of one existing turnout to a plurality of turnouts to be replaced or newly installed. the computer,
Drawing acquisition means for acquiring drawing data including map data and existing wiring diagrams;
current subscriber number acquisition means for acquiring current subscriber number data, which is information on the number of subscribers belonging to each branching device used in the existing wiring;
Allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition;
output means for outputting a calculation result by the allocation calculation means;
A program for functioning as
The conditions include conditions regarding the upper limit of the number of subscribers assigned to each switch to be replaced or newly installed,
The allocation calculation means replaces or newly installs the total number of subscribers of all existing turnouts less than or equal to the total number of existing turnouts allocated to a turnout to be replaced or newly installed, including one existing turnout of interest. A program characterized by comparing with the upper limit of the number of subscribers assigned to each branch . the computer,
Drawing acquisition means for acquiring drawing data including map data and existing wiring diagrams;
current subscriber number acquisition means for acquiring current subscriber number data, which is information on the number of subscribers belonging to each branching device used in the existing wiring;
Allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition;
output means for outputting a calculation result by the allocation calculation means;
A program for functioning as
said computer,
A program characterized by displaying the number of current subscribers assigned to an existing turnout on a map using numbers and further functioning as display means for arranging the number of current subscribers on the residential side of the map. the computer,
Drawing acquisition means for acquiring drawing data including map data and existing wiring diagrams;
current subscriber number acquisition means for acquiring current subscriber number data, which is information on the number of subscribers belonging to each branching device used in the existing wiring;
Allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition;
output means for outputting a calculation result by the allocation calculation means;
A program for functioning as
A program, wherein the condition includes a condition relating to the distance between adjacent splitters . the computer,
Drawing acquisition means for acquiring drawing data including map data and existing wiring diagrams;
current subscriber number acquisition means for acquiring current subscriber number data, which is information on the number of subscribers belonging to each branching device used in the existing wiring;
Allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition;
output means for outputting a calculation result by the allocation calculation means;
A program for functioning as
When the distance between adjacent existing turnouts is a predetermined distance or more, the allocation calculation means assigns each subscriber's house belonging to the existing turnout to another turnout to be replaced or newly installed. A program characterized by calculating a subscriber number allocation . the computer,
Drawing acquisition means for acquiring drawing data including map data and existing wiring diagrams;
current subscriber number acquisition means for acquiring current subscriber number data, which is information on the number of subscribers belonging to each branching device used in the existing wiring;
Allocation calculation means for newly determining the allocation of the number of subscribers belonging to each branching device to be replaced or newly installed so as to satisfy a predetermined condition;
output means for outputting a calculation result by the allocation calculation means;
A program for functioning as
The output means is
A program for drawing, on a map, a frame surrounding an existing turnout assigned to each turnout to be replaced or newly installed, which is calculated by the allocation calculation means.

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