JP2007121924A - Position display device and position display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a position display device and a position display method which are capable of displaying the present position of an object, on a distribution system diagram. <P>SOLUTION: A position display device 10 includes a receiving part 11, a display part 12, a calculation part 17, and an output part 18. The calculation part 17 includes a retrieval part 17a, a distance ratio calculation part 17b, and a shape determination part 17c. The distance ratio calculation part 17b calculates the distance ratio of first and second distances. A working vehicle is outputted to a middle point of a segment, connecting a first telegraph pole with a switch and a second telegraph pole with a switch, if the distance ratio is 1:1, and is outputted to a point internally dividing the segment at the distance ratio, when the distance ratio is not 1:1, and if a triangle formed by connecting the first and second telegraph poles and the working vehicle is an acute triangle, and is outputted to a point externally dividing the segment at the distance ratio if the distance ratio is other than 1:1 and the triangle is an obtuse triangle. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a position display device and a position display method, and more particularly to an apparatus for displaying a current position of a work vehicle or the like on a distribution system diagram and a method for displaying the current position of a work vehicle.

  Generally, a distribution line monitoring device is installed at a business office of an electric power company, and a distribution system is displayed on the screen. There are two ways to display the power distribution system. The first display method is a method of displaying the power distribution system on an actual map (street map display method). The second display method is to display the power distribution system. It is a method of displaying in skeleton format (distribution system diagram display method). Further, Patent Document 1 discloses a system that enables switching between a street map and a distribution system diagram on a single display screen.

In any of the above display methods, if the display screen is visually recognized, the distribution system can be known. For example, a remote operation is performed while viewing a display screen to electrically cut off a specific area, or a worker near the accident occurrence site is instructed while viewing the display screen.
JP 2005-137077 A

  By the way, when the work content is instructed to a worker near the accident site while looking at the display screen, there is a possibility that the precise instruction content cannot be issued because the current position of the worker is unknown.

  On the other hand, the current position of the work vehicle can be displayed in real time by using the car navigation system, but the necessary range of the power distribution system can be displayed on the same display screen due to the scale reduction and definition of the map, topographical constraints, etc. If it is difficult to confirm with (1), or if a noticeable distribution line is off the display screen, screen switching or scrolling may be required. Such an operation is very troublesome for an operator who is trying to recover from a power outage as soon as possible, and it is not practical to use a street map display for accident recovery.

  The present invention has been made in view of the above points, and an object thereof is related to a position display device and a position display method capable of displaying the current position of an object on a distribution system diagram.

  A first position display device according to the present invention includes a receiving unit that constantly or periodically receives a current position of an object via a wireless communication system, and a switch installed around the current position of the object. A plurality of installed power poles with switches and a display section for displaying a distribution system diagram illustrating each power distribution system of the power poles with switches, positions of the power poles with switches and the objects Using the current position, the first power pole with the closest switch to the object and the second power pole with the second switch closest to the object are identified from among the plurality of power poles with the switch. The current position of the object based on the positional relationship between the first electrical pole with the object and the positional relationship between the second electrical pole with the switch and the positional relationship with the object, and the positional relationship between the objects determined by the calculation unit An output unit that outputs power to the distribution system diagram That. The calculating unit calculates a distance ratio between the first distance from the object to the first power pole with a switch and the second distance from the object to the second power pole with a switch, and the first power pole with a switch. And the second power pole with switch and the shape of the triangle having the object as the vertices are determined. The output unit outputs the current position of the object to a point that internally divides the line segment connecting the first power pole with a switch and the second power pole with a switch into a distance ratio when the triangle is an acute triangle. When the triangle is a right triangle, the signal is output on the first power pole with a switch, and when the triangle is an obtuse triangle, the line segment is output to a point that divides the distance ratio.

  A second position display device of the present invention includes a receiving unit that receives a current position of an object constantly or periodically via a wireless communication system, and a switch installed around the current position of the object. A plurality of installed power poles with switches and a display section for displaying a distribution system diagram illustrating each power distribution system of the power poles with switches, positions of the power poles with switches and the objects A calculation unit that identifies the first power pole with a switch closest to the object using the current position, and an output unit that outputs the current position of the target on the first power pole with a switch in the distribution system diagram I have.

  With the configuration of the first and second position display devices, the current position of the object can be displayed on the distribution system diagram. Therefore, if the display part is looked at, it can be known instantly and correctly which distribution system the object is in. Therefore, it is possible to give an accurate instruction to a worker near the accident site while looking at the display unit.

  In the first position display device, “around the current position of the object” means the inside of a circle having a predetermined radius with the current position of the object as the center, and the predetermined radius is, for example, about 1 km.

  In the 1st and 2nd position display apparatus of this invention, it is preferable to display the distance from the present position of a target object to a 1st utility pole with a switch on a display part. With such a configuration, a person looking at the display unit can estimate the time required for the object to arrive at the first power pole with a switch.

  Moreover, in the 1st and 2nd position display apparatus of this invention, the receiving part may be comprised so that the latitude and longitude of a target object may be received regularly or regularly via a GPS system.

  Moreover, in the 1st and 2nd position display apparatus of this invention, the target object may be a work vehicle for recovering a distribution line accident, or may be a worker for recovering a distribution line accident. Good. When the target object is a work vehicle, it is only necessary to mount a GPS receiver on the work vehicle. When the target object is a worker, the worker only needs to have a GPS receiver.

  A first position display method of the present invention includes a reception step of receiving a current position of an object constantly or periodically via a wireless communication system, and a plurality of switch-equipped utility poles to which switches are attached. Using the position and the current position of the target object, a first power pole with a switch closest to the target object and a second power pole with a switch second closest to the target object from a plurality of power poles with a switch Based on the calculation step for determining the positional relationship between the first power pole with a switch and the object and the positional relationship between the second power pole with a switch and the object, and the positional relationship between the objects determined in the calculation step A display that displays a plurality of power poles with switches installed around the current position of the target object and displays the current position of the target object in a distribution system diagram illustrating each power distribution system of the power pole with switch And steps. In the calculating step, the distance ratio between the first distance from the object to the first power pole with a switch and the second distance from the object to the second power pole with a switch is calculated, and the first power pole with a switch is calculated. And the second power pole with switch and the shape of the triangle having the object as the vertices are determined. In the display step, the current position of the object is displayed at a point that internally divides the line segment connecting the first power pole with a switch and the second power pole with a switch into a distance ratio when the triangle is an acute triangle. When the triangle is a right triangle, it is displayed on the first power pole with a switch, and when the triangle is an obtuse triangle, it is displayed at a point that divides the line segment into the distance ratio.

  The second position display method of the present invention includes a reception step of receiving the current position of an object constantly or periodically via a wireless communication system, and a plurality of switch-equipped utility poles to which the switch is attached. The first step of identifying the first power pole with a switch closest to the object from among the plurality of power poles with a switch using the position and the current position of the object, and installed around the current position of the object A display step for displaying a current position of an object on a first power pole with a switch described in a power distribution diagram in which a plurality of power poles with a switch are described and each power distribution system of the power pole with a switch is illustrated And.

  In the first and second position display methods, the current position of the object can be displayed on the distribution system diagram. Therefore, it is possible to know instantly and accurately which distribution system the object is in. Therefore, it is possible to give an accurate instruction to a worker near the accident site while looking at the display unit.

  According to the present invention, the current position of an object can be displayed on a distribution system diagram. As a result, when a power distribution accident occurs, an accurate instruction can be given to an operator near the accident site while viewing the display screen of the position display device of the present invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiment.

Embodiment 1 of the Invention
In Embodiment 1, FIG. 1 to FIG. 6 are used to show a recovery operation when a distribution line accident occurs, the configuration of the position display device 10, and the display method in the position display device 10.

  First, recovery work in the event of a power failure due to a distribution line accident is shown.

  First, the worker looks at the position display device in the office, turns off a specific automatic switch, a distance control switch, and the like to electrically cut off the accident occurrence area. In addition, since there is a limit to the number of remote controllable switches such as automatic switches and remote control switches, this electrical disconnection alone is not sufficient. Therefore, move to the accident site and perform recovery work.

  Specifically, the workers are divided into a command group and a work group to perform recovery work. The worker of the command group instructs the worker of the work group by radio the location where the restoration work is to be performed while looking at the display unit 12 of the position display device 10. The workers of the work group get into a plurality of work vehicles equipped with GPS receivers, move to the site according to the instructions of the command team, and perform recovery work. When the restoration work is completed, the worker of the work group notifies the command group that the work is finished, and the worker of the command group instructs the next work place by wireless while looking at the display unit 12. On the other hand, if the recovery work is difficult, the worker of the work group requests support from the command group by radio, and the command group worker instructs the other work group by support while viewing the display unit 12. .

  Next, the configuration of the position display device 10 will be described with reference to FIGS. 1 to 4. FIG. 1A is a diagram schematically illustrating the position display device 10, and FIG. 1B is a diagram illustrating an internal configuration of the position display device 10. FIG. 2 is a diagram illustrating an example of a distribution system diagram. FIG. 3 is a diagram illustrating an internal configuration of the calculation unit 17. FIG. 4 is a diagram illustrating an example of a display method for displaying the current position of the work vehicle.

  As shown in FIGS. 1A and 1B, the position display device 10 includes a receiving unit 11, a display unit 12, first and second data storage units 14 and 15, a calculation unit 17, and an output unit 18. It consists of

  The receiver 11 is, for example, an antenna as shown in FIG. 1A, receives the latitude and longitude of the current position of the work vehicle using a GPS system, and as shown in FIG. The latitude and longitude are transmitted to the calculation unit 17.

  The display unit 12 is a monitor screen such as a liquid crystal display as shown in FIG. The power distribution system diagram shown in FIG. 2 is described on the display unit 12, and the current position of the work vehicle (indicated by x), the radio number mounted on the work vehicle, and the crew of the work vehicle are displayed on the power distribution system diagram. And a first distance, which will be described later, are displayed. In addition, the circle | round | yen shown in FIG. 2 shows the utility pole with a switch which cannot be remotely controlled, and the symbol which the circle shown in FIG. Moreover, the difference in line type indicates that the distribution systems are different from each other.

  The first data storage unit 14 stores the latitude and longitude of the power pole with switch and the power distribution system to which the power pole with the switch belongs, and as shown in FIG. It is configured to transmit to the calculation unit 17.

  The second data storage unit 15 stores the latitude and longitude of a utility pole that does not have a switch and the power distribution system to which the utility pole belongs, and as shown in FIG. Is transmitted to the calculation unit 17.

  As shown in FIG. 1B, the calculation unit 17 is configured to be able to receive data from the first data storage unit 14 and the reception unit 11 and to transmit data to the output unit 18. Calculation for displaying the current position of the car on the distribution system diagram is performed, and as shown in FIG. 3, the vehicle has a search unit 17a, a distance ratio calculation unit 17b, and a shape determination unit 17c.

  The search unit 17a searches for the first power pole with a switch and the second power pole with a switch. Specifically, using the latitude and longitude of the current position of the work vehicle and the latitude and longitude of the power pole with a switch, the distance between the current position of the work vehicle and each power pole with a switch is obtained. Line up telephone poles with switches in the order of closeness. Thereby, the uppermost utility pole with a switch becomes a first utility pole with a switch, and the second utility pole with a switch becomes a second utility pole with a switch.

  The distance ratio calculation unit 17b is configured to be able to receive the search result from the search unit 17a, and calculates the distance ratio between the first distance and the second distance. The first distance is a distance between the first power pole with a switch and the work vehicle, and the second distance is a distance between the second power pole with a switch and the work vehicle.

  The shape determination unit 17c is configured to be able to receive the search result from the search unit 17a, and determines the shape of a triangle formed by connecting the first power pole with switch, the second power pole with switch, and the work vehicle.

  And if the calculation result of the distance ratio calculation part 17b is 1: 1, the current position of the work vehicle is the midpoint of the line segment connecting the first power pole with a switch and the second power pole with a switch. Calculated. Further, the current position of the work vehicle is a point in which, when the calculation result of the distance ratio calculation unit 17b is a: b, if the determination result of the shape determination unit 17c is an acute triangle, the line segment is internally divided into a: b. If the determination result of the shape determination unit 17c is an obtuse triangle, the line segment is divided into a: b. If the determination result of the shape determination unit 17c is a right triangle, the first power pole with a switch Is calculated.

  Specifically, when the work vehicle moves from the point D to the point E shown in FIG. 4A, the current position of the work vehicle is that the work vehicle travels between the point D and the power pole F with a switch. When the vehicle is traveling between the utility pole F with switch and the utility pole G with switch, it is displayed at a point that divides the line segment FG outside (× shown in FIG. 4B). Is displayed at a point that internally divides the line segment FG (× shown in FIG. 4 (c)), and when the work vehicle is traveling between the switch pole with the switch G and the point E, the line segment It is displayed at a point that divides GF (× shown in FIG. 4D).

  As shown in FIG. 1B, the output unit 18 is configured to be able to transmit data to the display unit 12, and causes the display unit 12 to display the calculation result in the calculation unit 17. Thereby, if the display part 12 is visually recognized, the present position of each work vehicle will be known, and the power distribution system in which each work vehicle exists can be specified.

  As described above, the position display device 10 is configured to display the current position of the work vehicle on the distribution system diagram. Therefore, not only the current position of the work vehicle but also the distribution system in which the work vehicle is located can be recognized by visual recognition of the display unit 12.

  Moreover, the shape determination part 17c of the calculation part 17 is comprised so that the present position of a work vehicle can be displayed on the point which divides | segments the line segment which connects the 1st electric pole with a switch, and the 2nd electric pole with a switch. Thereby, even if it is a case where the work vehicle is moving on the road where the power pole with a switch is not installed ahead or behind, the present position of a work vehicle can be displayed correctly.

  Subsequently, a position display method will be described with reference to FIGS. FIG. 5 is a flowchart showing the first half of the position display method, and FIG. 6 is a flowchart showing the second half of the position display method.

  First, as shown in step S101, the latitude and longitude of the current position of the work vehicle are received using the GPS system. The latitude and longitude are preferably received regularly and regularly. Then, the process proceeds to step S102.

  In step S102, a utility pole within a range of, for example, a radius of about 1 km is searched from the current position of the work vehicle. Then, the process proceeds to step S103.

  In step S103, a telephone pole with a switch in the range of step S102 is searched. Then, the process proceeds to step S104.

  In step S104, it is determined whether or not the number of telephone poles with switches searched in step S103 is one or more. And if the number of utility poles with a switch is zero, it will progress to step S105 and will display "not displayable" on the display part 12. FIG. On the other hand, if the number of utility poles with switches is one or more, the process proceeds to step S106.

  In step S106, it converts into xy coordinates using the latitude and longitude of the utility pole with a switch searched in step S104. Specifically, first, using the latitude and longitude of a certain point as a reference point, each vector from the reference point toward each switch-equipped utility pole is obtained. Next, one of the vectors is set as a reference vector. Subsequently, a relative vector of each vector with respect to the reference vector is obtained, and each switch-equipped utility pole is arranged using each relative vector. Then, the process proceeds to step S107.

  In step S107, the distance between the work vehicle and each switch-equipped utility pole is obtained. Thereby, the first distance and the second distance can be calculated. Then, the process proceeds to step S108.

  In step S108, it is determined whether or not the number of power poles with switches is two or more. If it is not two or more, that is, if the number of utility poles with switches is one, the process proceeds to step S109, and points are plotted on the utility poles with switches in the distribution system diagram. Then, the distance from the work vehicle to the switch-equipped utility pole is output to the display unit 12. On the other hand, if the number is two or more, the process proceeds to step S110.

  In step S110, a distance ratio between the first distance and the second distance among the distances obtained in step S107 is calculated, and it is determined whether or not the distance ratio is 1: 1. If the distance ratio is 1: 1, the process proceeds to step S111 and is plotted at the midpoint of the line segment connecting the first power pole with switch and the second power pole with switch. On the other hand, if the distance ratio is not 1: 1, the process proceeds to step S112.

  In step S112, a triangular shape formed by connecting the first power pole with a switch, the second power pole with a switch, and the work vehicle is determined. Specifically, an inner product of a vector from the first power pole with a switch to the second power pole with a switch and a vector from the first power pole with a switch to the current position of the work vehicle is calculated. Further, the inner product of the vector from the second power pole with the switch to the first power pole with the switch and the vector from the second power pole with the switch to the current position of the work vehicle is calculated. Then, it is determined whether the product of the two inner products is positive. If the product of the inner product is positive, the process proceeds to step S113, and the inner dividing point of the line segment is plotted. On the other hand, if the inner product is not positive, the process proceeds to step S114.

  In step S114, it is determined whether or not the product of the two inner products calculated in step S112 is negative. If the product of the inner products is negative, the process proceeds to step S115 to plot the outer dividing point of the line segment. On the other hand, if the product of the inner products is not negative, that is, if the product of the inner products is 0, the process proceeds to step S116 and is plotted on the first power pole with a switch. Then, the distance from the work vehicle to the first power pole with a switch is displayed on the display unit 12.

  Thus, the current position of the work vehicle can be displayed on the distribution system diagram. Therefore, when the display unit 12 is viewed, the current position of the work vehicle and which power distribution system the work vehicle is in can be known.

<< Embodiment 2 of the Invention >>
In the present embodiment, the configuration of the calculation unit of the position display device is different from that of the first embodiment. It shows below using FIG.7 and FIG.8. FIG. 7 is a diagram illustrating an example of a display method for displaying the current position of the work vehicle. FIG. 8 is a flowchart showing a position display method.

  Although not shown, the position display device includes a display unit, first and second data storage units, a reception unit, a calculation unit, and an output unit, as in the first embodiment. The configurations of the second data storage unit, the receiving unit, and the output unit are as described in the first embodiment. And a calculation part has only a search part. The search unit searches for a power pole with a switch closest to the work vehicle.

  Specifically, when the work vehicle moves from point D to point E shown in FIG. 7A, the current position of the work vehicle travels from point D to the midpoint of line segment FG. At the time, it is displayed on the telephone pole F with a switch (× shown in FIG. 7B), and when traveling from the midpoint of the line segment FG to the point E, Is displayed (X shown in FIG. 7C). As described above, the position display device of the present embodiment is configured to display which switch-equipped power pole the work vehicle is near.

  In the position display method in the present embodiment, as shown in FIG. 8, steps S201 to S207 are substantially the same as steps S101 to S107 in the first embodiment. After step S207, the process proceeds to step S208.

  In step S208, it plots on the 1st utility pole with a switch. Thereby, it is possible to display which switch-equipped power pole the work vehicle is near.

<< Embodiment 3 of the Invention >>
In the present embodiment, the configuration of the position display device is different from that of the first embodiment. It shows below using FIG. FIG. 9 is a flowchart showing a position display method in the present embodiment.

  Although not shown, the position display device includes a data storage unit, a reception unit, a calculation unit, and an output unit. The configurations of the reception unit and the output unit are as described in the first embodiment. is there. Moreover, although the data storage part preserve | saves the latitude and longitude of a utility pole, there is no distinction whether each utility pole has a switch. The calculation unit is as described in the second embodiment. Thereby, since the power pole to which the switch is not attached is also described in the power distribution system diagram, the position of the work vehicle can be displayed more accurately.

  As shown in FIG. 9, the operation method in the position display device only does not include step S203 described in the second embodiment. Therefore, the same effect as in the second embodiment can be obtained.

<< Other Embodiments >>
The present invention may be configured as follows.

  In the first and second embodiments, the first data storage unit stores the latitude and longitude of a telephone pole with a switch, and the second data storage unit stores the latitude and longitude of a telephone pole without a switch. However, the latitude and longitude of a telephone pole with a switch and the latitude and longitude of a telephone pole without a switch may be stored in one data storage unit. In this case, step S102 and step S103 shown in FIG. 5 are integrated, and step S202 and step S203 shown in FIG. 8 are integrated.

  In the first to third embodiments, the position display device may not have the first and second data storage units and the data storage unit. For example, a GPS receiver may be attached to each power pole. .

  In the first to third embodiments, the worker of the work team may own a GPS receiver, and the current position of the worker may be displayed on the display unit.

  In the first to third embodiments, the current position of the work vehicle or the like is acquired via the GPS system. For example, a PHS terminal is attached to a power pole with no switch or a switch with no switch installed. A PHS receiver may be attached to the power pole with a switch and the work vehicle or the like so that wireless communication is possible.

  As described above, the present invention is useful for a position display device and a position display method, and particularly useful for a position display device and a position display method for displaying the current position of a work vehicle on a power distribution system diagram.

1 is a block diagram of a position display device in Embodiment 1. FIG. It is an example of a power distribution system diagram. 2 is a block diagram of a calculation unit in Embodiment 1. FIG. 3 is an example of a display method for displaying a current position of a work vehicle in the first embodiment. FIG. 6 is a flowchart showing the first half of the operation method in the position display device in the first embodiment. FIG. 6 is a flowchart showing the second half of the operation method in the position display device in the first embodiment. It is an example of the display method which displays the present position of the work vehicle in Embodiment 2. FIG. 10 is a flowchart showing an operation method in the position display device in the second embodiment. FIG. 10 is a flowchart illustrating an operation method in the position display device in the third embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Position display apparatus 11 Reception part 12 Display part 17 Calculation part 18 Output part

Claims (7)

A receiver that receives the current position of the object at all times or regularly via the wireless communication system;
A distribution system diagram illustrating a plurality of power poles with switches installed around the current position of the object and attached with switches, and illustrating each power distribution system of the power poles with switches A display unit to display;
Using each position of the electric pole with switch and the current position of the object, the first electric pole with the switch closest to the object and the object from the plurality of electric poles with the switch A calculation unit that specifies the second closest power pole with a switch and the positional relationship between the first power pole with the switch and the object and the positional relationship between the second power pole with the switch and the object. When,
An output unit that outputs the current position of the object to the distribution system diagram based on the positional relationship of the object obtained by the calculation unit;
The calculation unit calculates a distance ratio between a first distance from the object to the first power pole with a switch and a second distance from the object to the second power pole with a switch, and the switch Determining the shape of a triangle having the top of the first power pole with the switch, the second power pole with the switch and the object,
The output unit divides the current position of the object into a distance ratio by dividing a line segment connecting the first power pole with a switch and the second power pole with a switch when the triangle is an acute triangle. A position display device that outputs to a point that outputs the signal to the point that divides the line segment into the distance ratio when the triangle is an obtuse triangle when the triangle is a right-angled triangle. . A receiver that receives the current position of the object at all times or regularly via the wireless communication system;
A distribution system diagram illustrating a plurality of power poles with switches installed around the current position of the object and attached with switches, and illustrating each power distribution system of the power poles with switches A display unit to display;
Using each position of the electric pole with switch and the current position of the object, a calculation unit for identifying the first electric pole with a switch closest to the object;
An output unit for outputting the current position of the object on the first power pole with a switch in the distribution system diagram. The position display device according to claim 1 or 2,
A position display device that displays a distance from the current position of the object to the first power pole with a switch on the display unit. The position display device according to claim 1 or 2,
The said display part is a position display apparatus comprised so that the latitude and longitude of the said target object may be received always or regularly via a GPS system. The position display device according to claim 1 or 2,
The said target object is a position display apparatus which is a work vehicle for recovering a distribution line accident. A receiving step for receiving the current position of the object at all times or regularly via the wireless communication system;
Using the position of each of the plurality of switch-equipped utility poles to which the switch is attached and the current position of the object, a switch with the nearest switch to the object is selected from the plurality of utility poles with the switch. A first power pole and a second power pole with a switch that is second closest to the object; a positional relationship between the first power pole with the switch and the object; a second power pole with the switch; and the object A calculation step for obtaining a positional relationship with
Based on the positional relationship of the object obtained in the calculating step, a plurality of electric poles with switches installed around the current position of the object are described and each of the electric poles with switches A display step of displaying the current position of the object on a distribution system diagram illustrating the distribution system,
In the calculating step, a distance ratio between a first distance from the object to the first power pole with the switch and a second distance from the object to the second power pole with the switch is calculated, and the switch Determining the shape of a triangle having the top of the first power pole with the switch, the second power pole with the switch and the object,
In the display step, the current position of the object is divided into the distance ratio by dividing a line segment connecting the first power pole with a switch and the second power pole with a switch when the triangle is an acute triangle. Position display method for displaying on the first power pole with a switch when the triangle is a right triangle, and displaying the line segment at a point that divides the line segment into the distance ratio when the triangle is an obtuse triangle . A receiving step for receiving the current position of the object at all times or regularly via the wireless communication system;
Using the position of each of the plurality of switch-equipped utility poles to which the switch is attached and the current position of the object, a switch with the nearest switch to the object is selected from the plurality of utility poles with the switch. Identifying one power pole,
With the switch described in the distribution system diagram in which a plurality of the power poles with the switches installed around the current position of the object are described and each power distribution system of the power poles with the switches is illustrated. A position display method comprising: a display step of displaying the current position of the object on a first power pole.

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