Display device, display method, and program

Abstract

An object of the present invention is to provide a display device, a display method, and a program that allow easy reference to the state of a pipeline and the position corresponding to the state of the pipeline. [Solution] The system is equipped with a display means 10E that displays a map of the area including the location where the pipeline is laid on a display unit 2, and the display means 10E displays information regarding the condition of the pipeline at a specified position on the map at a position corresponding to the specified position.

Description

[Technical field]

[0001] The present disclosure relates to a display device, a display method, and a program. [Background technology]

[0002] Conventionally, the condition of underground pipelines has been diagnosed from above ground without excavation. For example, Patent Document 1 discloses a method for detecting the location of damage to the anticorrosive coating of buried metal pipes, in which a signal current is passed from a measurement signal transmitter between a damaged part of the anticorrosive coating of a metal pipe with an anticorrosive coating on its outer surface and buried underground and a counter electrode buried in the ground, a potential difference on the ground surface is detected by two wheel electrodes in a receiving device moving on the ground surface directly above the metal pipe, a signal with the same component as the signal current component is extracted, and changes in the amplitude and phase polarity of the potential difference are measured to detect a unique waveform created by the damaged part of the anticorrosive coating of the buried metal, thereby detecting the damage. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4106202 Summary of the Invention [Problem to be solved by the invention]

[0004] There is a demand for easily referencing the results of diagnosis of the condition of a pipeline laid underground, the condition of the pipeline and the position corresponding to the pipeline condition.

[0005] The present disclosure has been made in consideration of the above-mentioned circumstances, and aims to provide a display device, a display method, and a program that allow easy reference to the state of a pipeline and a position corresponding to the state of the pipeline. [Means for solving the problem]

[0006] A display device according to one aspect of the present disclosure includes a display means for displaying on a display unit a map of an area including a location where a pipeline is laid, and the display means displays information regarding the condition of the pipeline at a specified position at a position on the map corresponding to the specified position. Effect of the Invention

[0007] According to the present disclosure, it is possible to provide a display device, a display method, and a program that allow easy reference to the state of a pipeline and the position corresponding to the state of the pipeline. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram of diagnosis of an underground pipeline. [Diagram 2] 1 is a block diagram of a display device according to an embodiment. [Diagram 3] FIG. 2 is a block diagram of a control unit included in the display device. [Figure 4] 1 is a first example of a screen displayed on a display unit by the display device. [Diagram 5] 13 is a second example of a screen displayed on the display unit by the display device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, a display device, a display method, and a program according to an embodiment of the present disclosure will be described with reference to the drawings. The display device according to the present embodiment is used to refer to the results of non-excavation diagnosis from above ground of the condition of a pipeline at a predetermined position laid underground, or to create data to refer to the diagnosis results of the pipeline.

[0010] In this embodiment, the state of the pipeline refers to an abnormality in the pipeline detected by a diagnosis of the pipeline. The pipeline condition includes, for example, a condition related to damage to the corrosion protection coating of the pipeline, i.e., the above-mentioned pipeline diagnosis detects damage to the corrosion protection coating of the pipeline. The state of the pipeline includes, for example, a state regarding whether or not the pipeline is in contact with an underground object other than the pipeline laid underground, that is, whether or not the pipeline is in contact with another underground object is detected by the above-mentioned pipeline diagnosis. In this embodiment, the predetermined position in the pipeline refers to a position in the pipeline where each of the above-mentioned states is detected, that is, a position corresponding to the state of the pipeline.

[0011] (Pipeline diagnostics) FIG. 1 is a schematic diagram of the diagnosis of an underground pipeline PL. For diagnosis of the pipeline PL, a measurement signal transmitter TL and a receiver LC are used, as shown in FIG. The measurement signal transmitter TL generates an AC signal current. As shown in FIG. 1, the measurement signal transmitter TL includes a counter electrode TLa and a current-carrying cable EC. The counter electrode TLa is disposed underground (inside the soil). The current-carrying cable EC is connected to a part of the pipeline PL. The counter electrode TLa and the current-carrying cable EC are each connected to the measurement signal transmitter TL. The measurement signal transmitter TL applies an AC voltage between the pipeline PL and the counter electrode TLa, which are connected via the current-carrying cable EC, to pass an AC current. In this embodiment, the potential difference between an arbitrary point of the pipeline PL and the ground when an AC voltage is applied between the pipeline PL and the counter electrode TLa is called the earth potential. The earth potential can be measured, for example, using measurement cables (not shown) that are disposed at a plurality of points on the pipeline PL at approximately equal intervals and connected to the pipeline PL. The measurement cables are disposed, for example, at intervals along the entire length of the pipeline PL. The measurement cables may be connected, for example, to manholes (not shown) that are disposed at intervals on the pipeline PL. The earth potential is related to electrical constants such as the electrical resistance and reactance of the pipeline PL and the corrosion protection coating, and normally attenuates the further away from the measurement signal transmitter TL.

[0012] The receiver LC detects the potential difference on the ground surface using the wheel electrode LCa in contact with the ground surface. Here, if the pipeline PL has, for example, a damaged portion D of the corrosion protection coating or a contact portion T with another underground buried object UO, a current I flows into the pipeline PL via the damaged portion D of the corrosion protection coating or the contact portion T. This generates a relatively large potential difference around the damaged portion D of the corrosion protection coating or the contact portion T. The corrosion protection coating of the underground pipeline PL is diagnosed by detecting the potential difference thus generated at the ground surface using the receiving device LC. For example, the receiving device LC is used to measure the earth potential between a measurement cable at an arbitrary location on the pipeline PL and an electrode (not shown) installed on the ground at an arbitrary location as a potential reference, and the distribution of the earth potential at the arbitrary location on the pipeline PL is calculated. This makes it possible to calculate the earth potential Vp at the damaged portion D of the corrosion protective coating. The earth potential Vp at the damaged portion D of the corrosion protective coating thus obtained is used, for example, to calculate the area of ​​the damaged portion D of the corrosion protective coating (details will be described later).

[0013] When referring to the above-mentioned diagnosis results of the pipeline PL, it is preferable that the overall situation of the pipeline PL and the local situation of the pipeline PL can be easily grasped, respectively. In this case, if a map for checking the overall situation of the pipeline and a map for checking the local situation of the pipeline are separately prepared as in the conventional method, the effort of registering and referring to the diagnosis results of the pipeline increases. The display device according to this embodiment includes the following components, which contributes to reducing the user's effort in registering and referring to the diagnosis results of the pipeline PL.

[0014] (display device) A display device 1 according to this embodiment will be described. FIG. 2 is a block diagram of the display device 1 according to the embodiment. FIG. 3 is a block diagram of the control unit 10 included in the display device 1. As shown in FIG. FIG. 4 shows a first example of a screen displayed on the display unit 2 by the display device 1. In FIG. FIG. 5 shows a second example of the screen displayed on the display unit 2 by the display device 1. In FIG. The display device 1 is used to register and refer to the above-mentioned diagnosis results of the pipeline PL. Specifically, the display device 1 accepts input of various information related to the diagnosis of the pipeline PL by the control unit 10 shown in FIG.

[0015] 2, the display device 1 includes a control unit 10 including a processor 11 such as a CPU (Central Processing Unit) and a memory 12 connected by a bus, and executes a display program. The display program is a program that controls the operation of each functional unit included in the display device 1. In other words, the display program is a program that causes a computer to function as the display device according to this embodiment. The display device 1 functions as a device including the control unit 10 and a storage unit 20 by executing the display program.

[0016] More specifically, in the display device 1, the processor 11 reads out a display program stored in the storage unit 20 and stores the read display program in the memory 12. The processor 11 executes the display program stored in the memory 12, whereby the display device 1 functions as a device including the control unit 10 and the storage unit 20. The storage unit 20 is configured using a non-transitory computer-readable storage medium device such as a magnetic hard disk device or a semiconductor storage device. The storage unit 20 stores various information related to the display device 1. The storage unit 20 stores, for example, a display program in advance. The storage unit 20 may also store information related to the map M and information related to the state of the pipeline PL displayed in the list L.

[0017] In this embodiment, the display unit 2 may be included in the display device 1, or may be configured separately from the display device 1. In this embodiment, the display unit 2 is configured separately from the display device 1. The display unit 2 is, for example, a known display. That is, the display unit 2 includes, for example, a CRT (Cathode Ray Tube) display, a liquid crystal display, an organic EL (Electro-Luminescence) display, etc. The display unit 2 may be, for example, a known PC display or a touch panel.

[0018] After receiving input of various pieces of information related to the diagnosis of the pipeline PL, the display device 1 displays a map M and a list L on the display unit 2, as shown in FIG. 4 or FIG. The map M visually displays the location where the pipeline PL is laid, a predetermined position DP of the pipeline PL, and the like. In addition, in the pipeline PL displayed on the map M, a reference position RP is set, for example, by a user. The reference position RP is set by the user at an arbitrary location on the route of the pipeline PL. In this embodiment, the reference position RP is used to manage the predetermined position DP of the pipeline PL. The method for setting the reference position RP and details of the information displayed on the map M will be described later.

[0019] The list L is a list of information on the state of the pipeline PL at the predetermined position DP. For example, as shown in FIG. 4 or FIG. 5, the list L displays the distance from the reference position RP to the predetermined position DP, the potential difference measured on the ground surface at the predetermined position DP, the potential Vp to the ground at the predetermined position DP, and the area of ​​damage to the anticorrosive coating of the pipeline PL. In addition to this, the list L may display the earth covering at the predetermined position DP of the pipeline PL, the anticorrosive coating thickness of the pipeline PL, the diameter of the pipeline PL, and links for displaying site photos and detailed maps of the predetermined position DP, etc. In order to display these, the list L may be horizontally scrollable on the display unit 2, for example. The earth potential Vp at the predetermined position DP is calculated by a known method of deriving a regression line or a regression line formula based on the earth potential Vpx measured at an arbitrary reference position RPx, the earth potential Vpy measured at a reference position RPy closest to the predetermined position DP, and the distance from each reference position RP to the predetermined position DP. Note that the arbitrary reference position RP and the reference position RP closest to the predetermined position DP may be different reference positions. Note that, as described above, the earth potential is the potential difference between the pipeline PL and the ground surface. For example, the states at each of a plurality of predetermined positions DP may be displayed in a list in the list L. Details of each of the above-mentioned information displayed in the list L will be described later.

[0020] In this embodiment, the information related to the map M and the information related to the state of the pipeline PL displayed in the list L are obtained by the display device 1 from outside before being displayed on the display unit 2. Alternatively, each piece of information described above may be stored in advance in the display device 1. In this embodiment, the display device 1 also accepts input of various pieces of information, but the display device 1 may also function as a device that simply displays the stored information.

[0021] (Control Unit Configuration) Each component of the control unit 10 according to this embodiment will be described. As shown in FIG. 3, the control unit 10 of the display device 1 includes a map acquisition unit 10A, a registration unit 10B, an information acquisition unit 10C, an area calculation unit 10D, a display unit 10E, and a data output unit 10F.

[0022] (Map Acquisition Section) The map acquisition unit 10A acquires a map M to be displayed on the display unit 2. For example, the map acquisition unit 10A acquires the map M of the periphery of the location where the pipeline PL is laid by downloading it from the Internet. When downloading the map M from the Internet, for example, a well-known GIS (Geographic Information System) is preferably used. For example, the map acquisition unit 10A may acquire map data of the periphery of the location where the pipeline PL is laid from map data available offline.

[0023] In this embodiment, the map M acquired by the map acquisition unit 10A and displayed on the display unit 2 has a relatively large scale for the area near where the pipeline PL is laid. This allows the geographic information of the area where the pipeline PL is laid to be confirmed in detail. The map M for the area relatively far from where the pipeline PL is laid has a relatively small scale. This reduces the amount of geographic information for the area relatively far from where the pipeline PL is laid. By acquiring the map by the map acquisition unit 10A as described above, it is possible to reduce the amount of data of the acquired map M while providing sufficient geographical information of the location where the pipeline PL is laid. Note that the scale of the map M acquired by the map acquisition unit 10A may be arbitrarily set by the user.

[0024] In this embodiment, the vicinity of the location where the pipeline PL is laid refers to, for example, within a square area on the map M in which at least the entire pipeline PL fits. A location relatively far from the location where the pipeline PL is laid refers to, for example, outside the area of ​​the square. The size of the square is, for example, appropriately determined by the user. Alternatively, the size of the square may be automatically determined by the display device 1, for example, by the user inputting only the position information of the start point and end point of the pipeline PL in advance. Furthermore, the fact that the scale of the map M of a predetermined area is relatively large means that map data for the predetermined area has been acquired in detail to such an extent that the map M can be displayed even if the scale of the map M is increased. On the other hand, the fact that the scale of the map M of a predetermined area is relatively small means that map data for the predetermined area has not been acquired in detail, and the scale of the map M cannot be increased.

[0025] (Registration Department) The registration unit 10B registers the location where the pipeline PL is laid on the map M acquired by the map acquisition unit 10A. For example, the registration unit 10B acquires information on the location where the pipeline PL is laid from information input by the user. That is, the registration unit 10B accepts information on the location where the pipeline PL is laid input by the user. Then, the registration unit 10B registers the route of the pipeline PL in association with the map M based on the location where the pipeline PL is laid input by the user.

[0026] (Information acquisition department) The information acquiring unit 10C acquires information about the state of the pipeline PL. For example, the information acquiring unit 10C acquires information about the state of the pipeline PL from information input by a user. That is, the information acquiring unit 10C accepts information about the state of the pipeline PL input by a user. Details of the information about the state of the pipeline PL will be described later. In this embodiment, various inputs by the user to the display device 1, i.e., input of information related to the map M to the registration unit 10B and input of information related to the state of the pipeline PL to the information acquisition unit 10C, are performed via the input unit 3. The input unit 3 is an input interface such as a keyboard, a mouse, or a touch panel.

[0027] (Information acquired by the information acquisition unit) The following describes information about the state of the pipeline PL that is input by the user and acquired by the information acquisition unit 10C. Hereinafter, this information will be referred to as information input by the user. The information input by the user includes, for example, information regarding the distance from the reference position RP to the predetermined position DP. As described above, the state of the pipeline PL is detected by the receiving device LC shown in FIG. 1 by measuring the potential difference at the ground surface. The user records the state of the pipeline PL detected as described above in association with a position on the pipeline PL. At this time, the user inputs the distance from the reference position RP to the predetermined position DP. The distance from the reference position RP to the predetermined position DP is, for example, an actual measurement value at the site where the pipeline PL is laid. This enables the control unit 10 to manage the predetermined position DP on the pipeline PL by the distance from the reference position RP. In this embodiment, the user may input, for example, the distance from the reference position RP to the predetermined position DP as a relative value. That is, for example, when the predetermined position DP is located closer to the start point than the reference position RP in the pipeline PL, the user may input the distance from the reference position RP to the predetermined position DP as a negative value. Also, when the predetermined position DP is located closer to the end point than the reference position RP in the pipeline PL, the user may input the distance from the reference position RP to the predetermined position DP as a positive value.

[0028] Information on the distance from the reference position RP to the predetermined position DP input by the user is displayed as a numerical value in, for example, a list L displayed on the display unit 2. At this time, the information on the distance input by the user may be displayed as a relative value input by the user in the list L shown in FIG. 4 or FIG. 5. In the example shown in FIG. 4 or FIG. 5, the distance from the reference position RP to the predetermined position DP is displayed as a negative value in detection No. 1 and 2, and as a positive value in detection No. 3 and 4. Alternatively, the information on the distance from the reference position RP to the predetermined position DP may be displayed geometrically on the map M displayed on the display unit 2. That is, the information on the distance from the reference position RP to the predetermined position DP may be made to be information that can be grasped based on the scale of the map M by simultaneously displaying the positions of the predetermined position DP and the reference position RP on the map M. At this time, on the map M displayed on the display unit 2, the information on the distance input by the user may be appropriately displayed at a location equivalent to the predetermined position DP on the map M based on the scale of the map M and the information on the distance input by the user (details will be described later).

[0029] The information input by the user further includes a potential difference measured at the ground surface at a predetermined position DP of the pipeline PL and a potential Vp to the ground at the predetermined position DP. In this embodiment, the information is recorded in association with the predetermined position DP. That is, the user inputs information on the applied voltage by the measurement signal transmitter TL and the measurement data of the potential difference by the receiver LC when the state of the pipeline PL is detected at a predetermined position DP. This allows, for example, the area calculation unit 10D described later to calculate the area of ​​damage to the corrosion protection coating of the pipeline PL.

[0030] The information input by the user includes at least one of a site photo and a detailed map at the predetermined position DP, and an area of ​​damage to the corrosion protection coating of the pipeline PL. In this embodiment, the information is recorded in association with the predetermined position DP. An on-site photograph is, for example, a photograph taken by a user at the actual installation site of a pipeline PL. The detailed map is, for example, a drawing relating to the laying of the pipeline PL, a residential map, etc., used during the construction of the pipeline PL. The area of ​​damage to the anticorrosive coating of the pipeline PL is calculated, for example, by the area calculation unit 10D described next. The information acquiring unit 10C may acquire information including, for example, the reference position RP in the pipeline PL in addition to the information regarding the state of the pipeline PL.

[0031] (Display device operating mode) When the registration unit 10B accepts input of the path of the pipeline PL, the operation mode of the display device 1 may be the path reception mode. When the information acquisition unit 10C accepts input of information related to the state of the pipeline PL, the operation mode of the display device 1 may be the information reception mode. Switching between the path reception mode and the information reception mode may be performed, for example, by the display device 1 accepting an instruction input from a user to switch modes. The switching of the operation mode of the display device 1 will be described in detail later.

[0032] (Area calculation part) The area calculation unit 10D calculates the area of ​​damage to the corrosion protection coating of the pipeline PL by using the information on the state of the pipeline PL. In this embodiment, the area calculation unit 10D calculates the area of ​​damage to the corrosion protection coating of the pipeline PL by a known formula using, for example, the potential difference measured on the ground surface at the predetermined position DP, the earth potential Vp at the predetermined position DP, the earth covering at the predetermined position DP of the pipeline PL, the thickness of the corrosion protection coating of the pipeline PL, the diameter of the pipeline PL, and the like input by the user as described above.

[0033] (Display means) The display means 10E displays various information related to the diagnosis of the pipeline PL on the display unit 2. This allows a user to refer to various information by visually checking the display unit 2. Below, examples of information displayed on the display unit 2 by the display means 10E will be described.

[0034] 4, the display means 10E displays a map M of an area including a location where the pipeline PL is laid on the display unit 2. The display means 10E highlights the pipeline PL, for example, by making the line indicating the pipeline PL thick and the other lines on the map M thin. In this embodiment, the display means 10E displays the map M on the display unit 2 so that at least one of enlarging and reducing the map M is possible. In this embodiment, the display means 10E is capable of at least one of enlarging and reducing the map M. In this embodiment, enlarging and reducing the map M is performed, for example, by a user inputting an instruction via the input unit 3. The display means 10E may display a scale operation unit M1 as shown in FIG. 4 in order to receive an instruction to enlarge and reduce the map M.

[0035] In this embodiment, enlarging the map M means making the map M displayed on the display unit 2 show a narrower range. In other words, enlarging the map M means making the scale of the map M displayed on the display unit 2 larger. Reducing the map M means making the map M displayed on the display unit 2 show a wider range. In other words, reducing the map M means making the scale of the map M displayed on the display unit 2 smaller. For example, as shown in Fig. 4 and Fig. 5, the display means 10E is capable of enlarging the map M by operating, for example, the scale operation unit M1 on the display unit 2. Also, as shown in Fig. 5 and Fig. 4, the display means 10E is capable of reducing the map M by operating, for example, the scale operation unit M1 on the display unit 2. As described above, the map acquired by the map acquisition unit 10A has a relatively large scale in the vicinity of the location where the pipeline PL is laid. Meanwhile, the map has a relatively small scale in the location relatively far from the location where the pipeline PL is laid. Therefore, in this embodiment, the display means 10E displays the map M so that the scale of the map M in the location where the pipeline PL is laid is larger than the scale of the map M in the location far from the location where the pipeline PL is laid. This allows the geographical information of the location where the pipeline PL is laid to be grasped in detail.

[0036] In this embodiment, the display means 10E may be capable of changing the orientation of the map M. That is, the display means 10E may be capable of changing the direction indicated by one direction on the map M. In this embodiment, the orientation of the map M is changed, for example, by a user inputting an instruction via the input unit 3. The display means 10E may display an orientation operation unit M2 as shown in FIG. 4 in order to receive an instruction to change the orientation of the map M. For example, when the display means 10E receives an operation from the orientation operation unit M2, the display means 10E rotates the display of the map M displayed on the display unit 2 on the screen, with the center of the screen as the rotation center, in response to the operation.

[0037] 4 and 5, the display means 10E displays the route of the pipeline PL along the ground surface above the pipeline PL on a map M. This makes it easier for the user to intuitively grasp the route of the pipeline PL. The display means 10E displays, for example, a reference position RP set at an arbitrary point on the path of the pipeline PL on the path. The reference position RP is displayed by a black circle or the like on the path of the pipeline PL, for example, as shown in Fig. 4 or Fig. 5. The reference position RP is determined by the user as described above.

[0038] 4 and 5, the display means 10E displays information about the condition of the pipeline PL at a predetermined position DP at a position corresponding to the predetermined position DP on the map M. Alternatively, the display means 10E may display information about the condition of the pipeline PL at the predetermined position DP at a position corresponding to the predetermined position DP on the list L displayed on the display unit 2.

[0039] In this embodiment, the display means 10E displays the predetermined position DP by a speech bubble B on the map M. That is, as shown in Figs. 4 and 5, the predetermined position DP is displayed, for example, by a white circle on the route of the pipeline PL displayed on the map M. Then, a leader line Ba extends from the white circle and connects to one of the speech bubbles B corresponding to the number indicating the number of the predetermined position DP. The number of the predetermined position DP is determined, for example, sequentially along the route of the pipeline PL. This makes it possible to manage a plurality of predetermined positions DP that exist in the pipeline PL. Speech bubble B is automatically displayed at an arbitrary position on the map M displayed on the display unit 2 by the display means 10E, for example. At this time, when multiple speech bubbles B are displayed on the screen, each of the speech bubbles B is displayed so as not to overlap with each other. After that, the position of the speech bubble B displayed on the map M may be appropriately movable by the user.

[0040] The display means 10E displays, for example, a list L that lists information about the state at each of a plurality of different predetermined positions DP in the pipeline PL. The list L displays, for example, the above-mentioned various information input by the user and accepted by the information acquisition unit 10C, that is, the distance from the reference position RP to the predetermined position DP, the potential difference measured on the ground surface at the predetermined position DP, and the ground potential Vp at the predetermined position DP, as shown in Fig. 4. The list L also displays, for example, the area of ​​damage to the corrosion protection coating of the pipeline PL calculated by the area calculation unit 10D.

[0041] In this embodiment, when there are multiple predetermined positions DP in the pipeline PL, a number is assigned to each of the multiple predetermined positions DP. That is, as shown in Fig. 4 or 5, a detection number is assigned to each of the multiple predetermined positions DP. The assigned detection number corresponds to the number of a speech bubble B displayed on the map M. In this embodiment, the list L displayed on the display unit 2 is divided into rows for each detection No. Then, each piece of information related to the state at a predetermined position DP of the pipeline PL is displayed at a position on the list L corresponding to the predetermined position DP.

[0042] In this embodiment, when one of the pieces of information displayed in the list L is selected, the display means 10E highlights the information corresponding to the one piece of information and corresponding to the position corresponding to the state. The user selects one of the pieces of information by, for example, selecting a predetermined position DP or detection No. displayed in the list L using the input unit 3. For example, as shown in Fig. 5, when a predetermined position DP of detection No. 2 is selected, the color of the row in list L corresponding to detection No. 2 is displayed inverted. Also, for example, the number of speech bubble B corresponding to detection No. 2 displayed on map M is displayed in an enlarged manner. Alternatively, the color of speech bubble B may be inverted, or the number of speech bubble B may be displayed in bold. In this embodiment, the display means 10E displays a screen used for inputting information about the pipeline PL on the display unit 2 before displaying various information about the diagnosis of the pipeline PL. At this time, the display means 10E may display only the map M and accept input of the route of the pipeline PL. Furthermore, at this time, the display means 10E may display the route of the pipeline PL on the map M and then accept input of information about the state of the pipeline PL.

[0043] The data output unit 10F converts the list L displayed on the display unit 2 by the display means 10E as described above, or the map data displayed on the display unit 2 as described above, into data that can be checked offline, and records it on a recording medium. As the recording medium, any suitable one may be used, such as a known USB (Universal Serial Bus) flash memory or a DVD (Digital Versatile Disc). By recording each piece of information relating to the above-mentioned list L to map M on a recording medium by the data output unit 10F, each piece of data described above can be referred to in an offline environment, or each piece of data described above can be made portable.

[0044] The display device 1 according to this embodiment is configured with the above components. All or part of the functions of the display device 1 according to the present embodiment may be realized using hardware such as an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), or an FPGA (Field Programmable Gate Array). The program may be recorded on a computer-readable recording medium. The computer-readable recording medium is, for example, a portable medium such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM, or a storage device such as a hard disk built into a computer system. The program may be transmitted via an electric communication line.

[0045] (Display method) Next, a display method according to the present embodiment will be described, that is, a method for displaying various pieces of information relating to diagnosis of the pipeline PL using the above-mentioned display device 1 will be described. The display method according to this embodiment includes a map acquisition step, a registration step, an information acquisition step, an area calculation step, a display step, and a data output step.

[0046] (Map acquisition step) The map acquisition step is a step in which the map acquisition unit 10A acquires a map M to be displayed on the display unit 2. In the map acquisition step, the map acquisition unit 10A acquires a relatively large-scale map M for the area near the location where the pipeline PL is laid, and acquires a relatively small-scale map M for the area relatively far from the location where the pipeline PL is laid. This makes it possible to reduce the amount of data of the map M to be acquired while still having sufficient geographic information of the location where the pipeline PL is laid. In this embodiment, when performing the map acquisition step, it is preferable that the range related to the vicinity of the location where the pipeline PL is laid is determined in advance. This makes it preferable that the map acquisition unit 10A can acquire necessary and sufficient map data. For example, it is preferable that the display device 1 accepts information on the area to be inspected from the user regarding this range. This information may be stored in the storage unit 20, for example.

[0047] (Registration step) The registration step is a step of registering the location where the pipeline PL is laid on the map M acquired by the map acquisition unit 10A in the map acquisition step. In the registration step, the registration unit 10B accepts information on the location where the pipeline PL is laid, input by the user via the input unit 3. Then, the registration unit 10B registers the location where the pipeline PL is laid on the map M based on the information on the location where the pipeline PL is laid input by the user. This allows the route of the pipeline PL to be displayed on the map M. In the registration step, the user may input, for example, local information at the location indicated by the map M in addition to the route of the pipeline PL. That is, for example, the user may register the location where a facility such as a manhole is installed. The user may register the location of the reference position RP in the registration step. At this time, the user may register the location where the facility such as a manhole is installed as the reference position RP.

[0048] In the registration step, the display device 1 functions, for example, in a path reception mode. The display device 1 may switch the operation mode to the path reception mode by, for example, receiving an input from a user indicating that registration of a path of the pipeline PL is to be started. The display device 1 may display a screen for receiving the switching of the operation mode. When the display means 10E is in the route acceptance mode in the registration step, unlike Fig. 4, the display unit 2 may display a map M on which the route of the pipeline PL is not displayed, a scale operation section M1, and an orientation operation section M2, and may not display the list L. The display device 1 may accept the route inputted on the map M as the route of the pipeline PL.

[0049] The route of the pipeline PL registered by the registration unit 10B is displayed by the display means 10E as a plurality of connected straight lines, for example, as shown in Fig. 4 and Fig. 5. The user designates both ends of the plurality of straight lines on the map M, for example, via the input unit 3. In this way, the route of the pipeline PL is formed on the map M by the registration unit 10B. In the registration step, when the user inputs information on the positions of both ends of each of the multiple straight lines, the display means 10E may calculate the length of each of the multiple straight lines. Also, the display means 10E may display the calculated lengths of the straight lines in the list L. In the registration step, the user may input, in addition to information about the location where the pipeline PL is laid, information about, for example, the location where a manhole is provided and the location where an underground buried object UO other than the pipeline PL is located. The registration unit 10B may display the information registered in this manner on the map M together with the pipeline PL.

[0050] The information acquisition step is a step in which the information acquisition unit 10C acquires information about the state of the pipeline PL. In the information acquisition step, the information acquisition unit 10C accepts information about the state of the pipeline PL input by the user via the input unit 3. In the information acquisition step, the user inputs, for example, the distance from the reference position RP to a predetermined position DP in the pipeline PL, the potential difference measured on the ground surface at the predetermined position DP, the earth potential Vp at the predetermined position DP, a site photo and a detailed map at the predetermined position DP, etc. The information input by the information acquisition step is used to calculate the area of ​​damage to the corrosion protection coating of the pipeline PL in the area calculation step, and to display the map M and list L in the display step.

[0051] In the information acquisition step, the display device 1 functions, for example, in an information reception mode. The display device 1 may switch the operation mode to the information reception mode by, for example, receiving an input from a user indicating that registration of the path of the pipeline PL is to be terminated. When the display means 10E is in the information receiving mode in the information acquisition step, unlike FIG. 4, the display means 10E may display a map M showing only the route of the pipeline PL, a scale operation section M1, and an orientation operation section M2 on the display unit 2, and may not display the list L. The display device 1 may receive an input of a position selected on the route of the pipeline PL as a predetermined position DP of the pipeline PL. Then, this position and separately input information may be stored in the storage unit 20 or the like as information on the state of the pipeline PL.

[0052] The area calculation step is a step in which the area calculation unit 10D calculates the area of ​​the damage to the corrosion protection coating of the pipeline PL. In the area calculation step, the area calculation unit 10D calculates the area of ​​the damage to the corrosion protection coating of the pipeline PL using the potential difference measured on the ground surface at a predetermined position DP of the pipeline PL and the ground potential Vp at the predetermined position DP, etc., input by the user. This enables the display of the area of ​​the damage to the corrosion protection coating of the pipeline PL in the display step.

[0053] The area calculation step is started, for example, when the user inputs an instruction to start the area calculation step after inputting appropriate information in the information acquisition step by the user, for example, by selecting an icon displayed on the screen.

[0054] The display step is a step in which the display means 10E displays various information on the display unit 2, as shown in Figures 4 and 5. In the display step, the display means 10E displays, for example, a map M of an area including a location where the pipeline PL is laid. Also, in the display step, the display means 10E displays information regarding the state of the pipeline PL at a predetermined position DP at a position on the map M corresponding to the predetermined position DP.

[0055] In addition, in the display step, the display means 10E displays, for example, a list L that lists information about the state at each of a plurality of different positions in the pipeline PL. In the list L, for example, as shown in Fig. 4, the above-mentioned various information input by the user and accepted by the information acquisition unit 10C, that is, for example, the distance from the reference position RP to the predetermined position DP, the potential difference measured on the ground surface at the predetermined position DP, the potential Vp to the ground at the predetermined position DP, a site photo at the predetermined position DP, and a detailed map are displayed. In addition, in the list L, for example, the area of ​​damage to the corrosion protection coating of the pipeline PL calculated by the area calculation unit 10D is displayed. In the display step, when one of the multiple pieces of information displayed in the list L is selected, the display means 10E highlights the information corresponding to the one piece of information and at a position corresponding to the state, as shown in FIG. In the display step, the user may use the scale operation unit M1 to enlarge or reduce the map M displayed on the display unit 2. The user may use the orientation operation unit M2 to operate the orientation of the map M displayed on the display unit 2.

[0056] In the data output step, the data output unit 10F converts the list L displayed on the display unit 2 by the display means 10E as described above, or the map data displayed on the display unit 2 as described above, into data that can be checked offline, and records the data on a recording medium. By carrying out the data output step, the user can refer to the various information displayed in the display step offline or can carry the information with him / her. The display method according to this embodiment is carried out through the above steps.

[0057] As described above, according to the display device 1 of this embodiment, the display means 10E displays the map M of the area including the location where the pipeline PL is laid on the display unit 2. In addition, the display means 10E displays information on the state of the pipeline PL at a predetermined position DP at a position corresponding to the predetermined position DP on the map M displayed on the display unit 2. This makes it easy to refer to the state of the pipeline PL and the position corresponding to the state of the pipeline PL. Therefore, for example, when the corrosion protection coating of the pipeline PL is damaged, it is possible to easily grasp the position of the damage to the corrosion protection coating of the pipeline PL. Conventionally, the diagnosis results of the pipeline PL condition had to be analyzed, organized, and prepared as a report manually. Specifically, the diagnosis results were first referred to and compared with the map M to identify the location of damage to the corrosion protection coating of the pipeline PL on the map M. Then, the location of the damage was written by hand in the case of a paper map, and characters and symbols were input into image data in the case of a map on a personal computer. By making it possible to perform the above-mentioned operations using the display device 1 according to the present embodiment, the effort and time required for registering and referring to the diagnosis results of the pipeline PL can be significantly reduced.

[0058] Moreover, the display means 10E displays the map M on the display unit 2 so that at least one of the map M can be enlarged and reduced. This makes it easier to make the size of the map M displayed on the display unit 2 suitable for the user. For example, when checking the entire route of the pipeline PL, a wider range can be visually observed by reducing the map M. Also, when checking in detail a position corresponding to the state of the pipeline PL, a more detailed map M can be visually observed by enlarging the map M. In this way, by making it possible to enlarge or reduce one map M for reference, for example, the overall situation and local situation of the pipeline PL can be referenced on one map M. Therefore, it is possible to eliminate the need for the user to separately prepare a map M on which the overall situation of the pipeline PL can be confirmed and a map M on which the local situation of the pipeline PL can be confirmed. This reduces the user's effort.

[0059] Furthermore, the display means 10E displays the route of the pipeline PL along the ground surface on the pipeline PL on the map M displayed on the display unit 2. This allows the user to easily intuitively grasp the route of the pipeline PL. Furthermore, the display means 10E displays a reference position RP set at an arbitrary point on the route of the pipeline PL on the route. This allows the user to easily grasp, for example, information on the state of the pipeline PL and the position corresponding to the state of the pipeline PL based on the distance from the reference position RP.

[0060] Furthermore, the information on the state of the pipeline PL includes information on the distance from a reference position RP set at any point on the path of the pipeline PL to a predetermined position DP of the pipeline PL. This allows, for example, a position corresponding to the state of the pipeline PL to be managed by the distance from the reference position RP. Therefore, even if there is a plurality of pieces of information on the state of the pipeline PL and the positions corresponding to the state of the pipeline PL, the plurality of pieces of information can be easily managed. Therefore, the information on the state of the pipeline PL and the positions corresponding to the state of the pipeline PL can be efficiently managed.

[0061] Further, the map acquisition unit 10A acquires the map M. This allows the map M to be displayed on the display unit 2. The registration unit 10B registers the location where the pipeline PL is laid on the map M acquired by the map acquisition unit 10A. This allows the route of the pipeline PL to be displayed on the map M. Then, the information acquisition unit 10C acquires information regarding the state of the pipeline PL. This allows the state of the pipeline PL and the positions corresponding to the state of the pipeline PL to be displayed in association with the route of the pipeline PL. This makes it easier for the user to understand the state of the pipeline PL and the positions corresponding to the state of the pipeline PL by associating them with each other.

[0062] Furthermore, the display means 10E displays a predetermined position DP of the pipeline PL by a speech bubble B. This makes it easier to visually grasp the position on the map M that corresponds to the state of the pipeline PL. Therefore, for example, even if there are multiple positions that correspond to the state of the pipeline PL, it is possible to easily grasp the positions that correspond to the multiple states at the same time.

[0063] Furthermore, the display means 10E displays the map M so that the scale of the map M at the location where the pipeline PL is laid is larger than the scale of the map M at locations away from the location where the pipeline PL is laid. That is, for the map M displayed on the display unit 2, the map M near the location where the pipeline PL is laid has a relatively large scale. This allows detailed geographic information of the area near where the pipeline PL is laid to be confirmed. The map M of the area relatively far from the area where the pipeline PL is laid has a relatively small scale. This allows the amount of data on the map M to be reduced.

[0064] Moreover, the display means 10E further displays a list L that lists information about the state at each of a plurality of different positions in the pipeline PL, which allows the user to grasp in more detail the information about the state of the pipeline PL corresponding to each of the plurality of positions. Furthermore, when one of the pieces of information displayed in the list L is selected, the display means 10E highlights the information corresponding to the selected piece and corresponding to the position corresponding to the state related to the selected piece. This makes it easier to grasp more detailed information about the state of the pipeline PL displayed in the list L by associating it with a predetermined position DP of the pipeline.

[0065] Furthermore, the data output unit 10F converts the list L, which lists information about the state of the pipeline PL, into data that can be checked offline and records it on a recording medium. This allows, for example, various information about the state of the pipeline PL to be referenced in an offline environment. Therefore, for example, the information included in the list L can be checked without being affected by the communication environment. Also, for example, various information about the state of the pipeline PL can be made portable.

[0066] In addition, the condition of the pipeline PL at the predetermined position DP includes a condition related to damage to the corrosion protection coating of the pipeline PL, which makes it easier to grasp the location of the damage to the corrosion protection coating of the pipeline PL.

[0067] In addition, the state of the pipeline PL at the predetermined position DP includes a state regarding the presence or absence of contact with an underground buried object UO different from the pipeline PL, which makes it easier to grasp the portion of the pipeline PL that is in contact with another underground buried object UO.

[0068] Furthermore, the information regarding the state of the pipeline PL at the predetermined position DP further includes the potential difference measured on the ground surface at the predetermined position DP of the pipeline PL, and the potential Vp to the ground at the predetermined position DP. This allows the result of measuring the state of the pipeline PL by the potential difference to be displayed at a position corresponding to the state of the pipeline PL as information regarding the state of the pipeline PL. This makes it possible to efficiently manage more detailed information regarding the state of the pipeline PL and the positions corresponding to the state of the pipeline PL.

[0069] The pipeline PL further includes an area calculation unit 10D that calculates the area of ​​damage to the corrosion protection coating of the pipeline PL by using information about the state of the pipeline PL. That is, for example, the area of ​​damage to the corrosion protection coating of the pipeline PL is calculated by using a potential difference measured on the ground surface at a predetermined position DP of the pipeline PL and a potential to the ground Vp at the predetermined position DP. This makes it possible to easily grasp the area of ​​damage to the corrosion protection coating of the pipeline PL by associating it with the position corresponding to the damage to the corrosion protection coating.

[0070] The information on the condition of the pipeline PL also includes at least one of an on-site photograph and a detailed map at the predetermined position DP, and an area of ​​damage to the corrosion protection coating of the pipeline PL, which allows the condition of the pipeline PL to be understood in more detail.

[0071] Furthermore, according to the above display method, in the display step, a map M of an area including the location where the pipeline PL is laid is displayed on the display unit 2. In addition, in the display step, information regarding the state of the pipeline PL at a predetermined position DP is displayed at a position corresponding to the predetermined position DP on the map M displayed on the display unit 2. This makes it possible to easily grasp the state of the pipeline PL and the position corresponding to the state of the pipeline PL. That is, for example, when the corrosion protection coating of the pipeline PL is damaged, it is possible to easily grasp the position of the damage to the corrosion protection coating of the pipeline PL.

[0072] The technical scope of the present disclosure is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present disclosure. For example, the pipeline PL described in this embodiment as being laid underground may have a portion exposed above ground. In addition to the above-mentioned information, the list L displayed on the display unit 2 may appropriately display any information related to the condition of the pipeline PL, such as the date the pipeline PL was diagnosed and the line name assigned to each pipeline PL. In addition, the display device 1 may have a function of calculating, when a user selects an arbitrary location on the route of the pipeline PL displayed on the display unit 2, the distance from the selected location to the reference position RP. In addition, the information displayed in list L may be all of the above, or only some of the above may be appropriately selected and displayed. Furthermore, on the map M, the predetermined position DP may be displayed by anything other than the speech bubble B. Furthermore, the list L may be automatically uploaded to a cloud on the Internet, for example. Furthermore, a plurality of pipelines PL may be displayed overlapping each other on the map M displayed on the display unit 2. In this case, the plurality of pipelines PL may be displayed with different colors for each route.

[0073] In addition, within the scope of the present disclosure, the components in the above-described embodiments may be replaced with well-known components as appropriate, and the above-described modified examples may be combined as appropriate.

[0074] (Additional Note) The display device, the display method, and the program according to the embodiment can be understood, for example, as follows.

[0075] <1> A display device according to one aspect of the present disclosure includes a display means for displaying on a display unit a map of an area including a location where a pipeline is laid, and the display means displays information regarding the condition of the pipeline at a specified position at a position on the map corresponding to the specified position.

[0076] According to the above display device, the display means displays a map of an area including a location where the pipeline is laid on the display unit. The display means also displays information on the state of the pipeline at a predetermined position on the map displayed on the display unit at a position corresponding to the predetermined position. This allows the state of the pipeline and the position corresponding to the state of the pipeline to be easily referred to. Therefore, for example, when the corrosion protection coating of the pipeline is damaged, the position of the damage to the corrosion protection coating of the pipeline can be easily grasped. Conventionally, the diagnosis results of the pipeline condition had to be analyzed, organized, and prepared as a report manually. Specifically, the diagnosis results were first referred to and compared with a map to identify the location of damage to the corrosion protection coating of the pipeline on the map. Then, the location of the damage was written by hand in the case of a paper map, or by inputting characters or symbols into image data in the case of a map on a computer. By making it possible to perform the above-mentioned operations using the display device 1 according to this embodiment, the effort and time required for registering and referring to the diagnosis results of the pipeline can be significantly reduced.

[0077] <2> the above <1> In the display device according to the present invention, a configuration may be adopted in which the display means displays the map on the display unit so that the map can be at least one of enlarged and reduced.

[0078] Further, the display means displays the map on the display unit so that at least one of the map can be enlarged and reduced. This makes it easier to make the size of the map displayed on the display unit suitable for the user. For example, when checking the entire route of the pipeline, a wider range can be visually observed by reducing the map. Furthermore, when checking in detail a position corresponding to the state of the pipeline, a more detailed map can be visually observed by enlarging the map. In this way, by making it possible to enlarge or reduce one map for reference, for example, the overall status and local status of the pipeline can be referenced on one map. Therefore, it is not necessary for the user to separately prepare a map for checking the overall status of the pipeline and a map for checking the local status of the pipeline. This reduces the user's effort.

[0079] <3> the above <1> or <2> In the display device according to the present invention, the display means may be configured to display the route of the pipeline on the map along the ground surface above the pipeline, and to display a reference position set at any point on the route on the route.

[0080] The display means also displays the pipeline route along the ground surface on the pipeline on a map displayed on the display unit. This allows the user to easily intuitively grasp the pipeline route. The display means also displays a reference position set at an arbitrary point on the pipeline route on the route. This allows the user to easily grasp, for example, information on the state of the pipeline and a position corresponding to the state of the pipeline based on the distance from the reference position.

[0081] <4> the above <3> In the display device according to the present invention, a configuration may be adopted in which the information includes information relating to a distance from the reference position to the predetermined position.

[0082] Furthermore, the information on the pipeline state includes information on the distance from a reference position set at any point on the pipeline route to a predetermined position on the pipeline. This makes it possible, for example, to manage a position corresponding to the pipeline state by the distance from the reference position. Therefore, even if there is a plurality of pieces of information on the pipeline state and the positions corresponding to the pipeline state, the plurality of pieces of information can be easily managed. Therefore, it is possible to efficiently manage the information on the pipeline state and the positions corresponding to the pipeline state.

[0083] <5> the above <1> from <4> In the display device according to any one of the above aspects, a configuration may be adopted that further includes a map acquisition unit that acquires the map, a registration unit that registers the location where the pipeline is laid on the map, and an information acquisition unit that acquires the information.

[0084] Furthermore, the map acquisition unit acquires a map. This allows the map to be displayed on the display unit. The registration unit registers the location where the pipeline is laid on the map acquired by the map acquisition unit. This allows the route of the pipeline to be displayed on the map. Then, the information acquisition unit acquires information regarding the state of the pipeline. This allows the state of the pipeline and the positions corresponding to the state of the pipeline to be displayed in association with the route of the pipeline. This makes it easier for the user to understand the state of the pipeline and the positions corresponding to the state of the pipeline by associating them with each other.

[0085] <6> the above <1> from <5> In the display device according to any one of the above aspects, a configuration may be adopted in which the display means displays the predetermined position by a speech bubble.

[0086] The display means displays a predetermined position of the pipeline in a speech bubble. This allows the position on the map corresponding to the pipeline state to be more easily grasped by visual inspection. Therefore, even if there are multiple positions corresponding to the pipeline state, for example, it is possible to easily grasp the positions corresponding to the multiple states at the same time.

[0087] <7> the above <1> from <6> In the display device of any one of the above aspects, the display means may be configured to display the map so that the scale of the map at the location where the pipeline is laid is larger than the scale of the map at a location away from the location where the pipeline is laid.

[0088] The display means displays the map so that the scale of the map at the location where the pipeline is laid is larger than the scale of the map at the location away from the location where the pipeline is laid. That is, the map displayed on the display unit has a relatively large scale for the map near the location where the pipeline is laid. This allows the geographical information near the location where the pipeline is laid to be confirmed in detail. Meanwhile, the map at the location relatively far from the location where the pipeline is laid has a relatively small scale. This allows the amount of map data to be reduced.

[0089] <8> the above <1> from <7> In the display device according to any one of the above aspects, the display means may further display a list of the information relating to the status at each of a plurality of different positions in the pipeline, and when one of the plurality of pieces of information displayed in the list is selected, the display means may highlight the information corresponding to the one piece of information and corresponding to the position corresponding to the status.

[0090] The display means further displays a list of information relating to the state at each of a plurality of different positions in the pipeline, thereby allowing the user to grasp in more detail the information relating to the state of the pipeline corresponding to each of the plurality of positions. Furthermore, when one of the pieces of information displayed in the list is selected, the display means highlights the information corresponding to the selected piece and corresponding to the position corresponding to the state related to the selected piece. This makes it easier to grasp the more detailed information on the state of the pipeline displayed in the list by associating it with a predetermined position DP of the pipeline.

[0091] <9> the above <8> The display device according to the above may further include a data output unit that converts the list into data that can be checked offline and records the data on a recording medium.

[0092] Furthermore, the data output unit converts the list of information related to the pipeline state into data that can be checked offline and records the data on the recording medium. This allows, for example, various information related to the pipeline state to be referenced in an offline environment. Therefore, for example, the information included in the list can be checked without being affected by the communication environment. Also, for example, various information related to the pipeline state can be made portable.

[0093] <10> the above <1> from <9> In the display device according to any one of the above aspects, a configuration may be adopted in which the condition includes a condition related to damage to an anticorrosive coating of the pipeline.

[0094] In addition, the condition at a predetermined position of the pipeline includes a condition related to damage to the corrosion protection coating of the pipeline, which makes it easier to grasp the location of the damaged corrosion protection coating of the pipeline.

[0095] <11> the above <1> from <10> In the display device according to any one of the above aspects, a configuration may be adopted in which the state includes a state regarding the presence or absence of contact with an underground buried object other than the pipeline.

[0096] The state of the pipeline at a given position also includes a state regarding the presence or absence of contact with an underground object other than the pipeline, which makes it easier to grasp the portion of the pipeline that is in contact with another underground object.

[0097] <12> the above <1> from <11> In the display device of any one of the above aspects, a configuration may be adopted in which the information further includes a potential difference measured on the ground surface at a predetermined position on the pipeline and a potential relative to the ground at the predetermined position.

[0098] Furthermore, the information on the condition of the pipeline at the predetermined position further includes the potential difference measured on the ground surface at the predetermined position of the pipeline and the potential to the ground at the predetermined position. This allows the result of measuring the pipeline condition using the potential difference to be displayed at a position corresponding to the pipeline condition as information on the pipeline condition. This makes it possible to efficiently manage more detailed information on the pipeline condition and the positions corresponding to the pipeline condition.

[0099] <13> the above <1> from <12> In the display device according to any one of the above aspects, a configuration may be adopted in which the display device further includes an area calculation unit that uses the information to calculate an area of ​​damage to the corrosion-resistant coating of the pipeline.

[0100] The system further includes an area calculation unit that calculates an area of ​​damage to the corrosion protection coating of the pipeline by using information about the state of the pipeline. That is, for example, the area of ​​damage to the corrosion protection coating of the pipeline is calculated by using a potential difference measured on the ground surface at a predetermined position on the pipeline and a potential to ground at the predetermined position. This makes it easier to understand the area of ​​damage to the corrosion protection coating of the pipeline by associating it with the position corresponding to the damage to the corrosion protection coating.

[0101] <14> the above <1> from <13> In the display device according to any one of the above aspects, the information may include at least one of an on-site photograph and a detailed map at the specified location, and an area of ​​damage to the corrosion protection coating of the pipeline.

[0102] The information on the pipeline condition also includes at least one of a site photo and a detailed map at a given location, and an area of ​​damage to the corrosion protection coating of the pipeline, which allows a more detailed understanding of the pipeline condition.

[0103] <15> A display method according to one aspect of the present disclosure includes a display step of displaying a map of an area including a location where a pipeline is laid on a display unit, and in the display step, information regarding the condition of the pipeline at a specified position is displayed at a position on the map corresponding to the specified position.

[0104] According to the above display method, in the display step, a map of an area including a location where a pipeline is laid is displayed on the display unit. Also, in the display step, information on the state of a predetermined position of the pipeline is displayed at a position corresponding to the predetermined position on the map displayed on the display unit. This makes it possible to easily grasp the state of the pipeline and the position corresponding to the state of the pipeline. That is, for example, when the corrosion protection coating of a pipeline is damaged, it becomes possible to easily grasp the position of the damage to the corrosion protection coating of the pipeline.

[0105] <16> A program according to an embodiment of the present disclosure includes: <1> from <14> The display device according to any one of the above aspects is characterized in that the display device is caused to function as the display device according to any one of the above aspects. [Explanation of symbols]

[0106] 1 Display device 2 Display section 3. Input section 10 Control section 10A Map Acquisition Section 10B Registration Department 10C Information acquisition section 10D area calculation part 10E Display means 10F Data output section 11 Processors 12. Memory 20 Memory section B Speech bubble Ba Lead wire D Damaged area DP in place I current L List LC receiver LCa wheel electrode M Map M1 Scale Control Unit M2 Orientation Control Unit PL Pipeline RP reference position T contact part TL measurement signal generator TLa Counterpole UO underground objects

Claims

1. A display device including a display means for displaying a map of an area including a location where a pipeline is laid on a display unit, the display means displays information about a state of the pipeline at a predetermined position on the map at a position corresponding to the predetermined position; The display means is displaying on the map a path of the pipeline along a ground surface above the pipeline; A reference position set at an arbitrary point on the route is displayed on the route; the information includes information regarding a distance from the reference position to the predetermined position, The display device includes: a registration unit that registers a location where the pipeline is laid on the map; An information acquisition unit that acquires the information, The registration unit accepts registration of the location of the reference position from a user, The information acquisition unit receives an input of information regarding a distance from the reference position to the predetermined position in the pipeline from the user. A display device comprising:

2. The display means displays the map on the display unit so that the map can be at least one of enlarged and reduced.

2. The display device according to claim 1 .

3. Further comprising a map acquisition unit that acquires the map.

2. The display device according to claim 1 .

4. the display means displays the predetermined position by a speech bubble.

2. The display device according to claim 1 .

5. the display means displays the map such that a scale of the map at a location where the pipeline is laid is larger than a scale of the map at a location away from the location where the pipeline is laid.

2. The display device according to claim 1 .

6. The display means further displays a list of the information regarding the status at each of a plurality of different positions in the pipeline; When one of the plurality of pieces of information displayed in the list is selected, the display means highlights information corresponding to the one piece of information, the information corresponding to a position corresponding to the state.

2. The display device according to claim 1 .

7. A data output unit converts the list into data that can be confirmed offline and records the data on a recording medium.

7. The display device according to claim 6.

8. The condition includes a condition related to damage to a corrosion protection coating of the pipeline.

2. The display device according to claim 1 .

9. The condition includes a condition regarding the presence or absence of contact with an underground buried object other than the pipeline.

2. The display device according to claim 1 .

10. The information further includes a potential difference measured on the earth's surface at the predetermined location and a potential to ground at the predetermined location.

2. The display device according to claim 1 .

11. Further comprising an area calculation unit that calculates an area of ​​damage to the corrosion protection coating of the pipeline using the information. The display device according to claim 10 .

12. the information includes at least one of a site photograph and a detailed map of the predetermined location, and an area of ​​damage to the corrosion protection coating of the pipeline; 2. The display device according to claim 1 .

13. A display method comprising a display step of displaying, on a display unit, a map of an area including a location where a pipeline is laid, by a computer, In the display step, information regarding a state of the pipeline at a predetermined position is displayed at a position on the map corresponding to the predetermined position; In the display step, displaying on the map a path of the pipeline along a ground surface above the pipeline; A reference position set at an arbitrary point on the route is displayed on the route; the information includes information regarding a distance from the reference position to the predetermined position, The display method includes: a registration step of registering the location where the pipeline is laid on the map in the computer; and an information acquisition step in which the computer acquires the information, In the registration step, the computer accepts registration of the location of the reference position from a user, In the information acquisition step, the computer receives an input of information regarding a distance from the reference position to the predetermined position in the pipeline from the user. A display method comprising:

14. A computer is caused to function as the display device according to any one of claims 1 to 12. A program characterized by:

Images