JP6366317B2 - Equipment display system using mobile terminals - Google Patents

Description

  The present invention relates to a facility display system using a portable terminal used for maintenance work of various facilities (electric poles, electric wires, switches, manholes, water pipes, etc.).

When maintaining and managing facilities at electric power companies and local governments, there is a task (hereinafter referred to as an inspection task) for planning and implementing facility inspections. For the purpose of improving the efficiency of inspection work, the location of equipment is determined using a map display system that consists of a map display device (hereinafter referred to as a map display device) and a map generation device (hereinafter referred to as a map generation device). It displays on the map output to the map display apparatus as an equipment symbol.
By using a mobile terminal such as a smartphone or tablet as a map display device, a map can be output on the mobile terminal and equipment symbols can be displayed on the map. ) Can check the location of the inspection site and equipment information and carry out the inspection work.

  The inspection operator moves or enlarges / reduces the map as necessary, but the drawing performance is impaired due to the fact that the map drawing does not follow the operation depending on the number of equipment symbols displayed on the mobile terminal and the communication environment of the mobile terminal. There was a case. In order to solve these problems, a map image in which equipment symbols are embedded in the background map is acquired from the map generation device each time and stored in a portable terminal, so that the equipment symbols can be used without being drawn on the map. An realized map display system is also considered.

JP 2003-131565 A

  As a method of creating a map image in which equipment symbols are embedded in the background map, as previously described at the time of construction of the map display system, as described in Patent Document 1, the map image is displayed on a mobile terminal. Thus, there is a method of dynamically regenerating equipment symbols in response to new additions or deletions by a map generation device.

  However, in the above method, there is a problem that it takes time to regenerate an image in the map generation device, and further, there is a problem that if the change range is not narrowed down strictly, the data amount becomes large and download takes time. . When using a terminal having low drawing performance or communication performance such as a portable terminal, it is easily affected by these, and the drawing performance may be deteriorated.

The present invention has been made in view of the above problems, and relates to an update related to addition and deletion of equipment symbols, etc., and provides an equipment display system that can solve the problem and improve drawing performance in a mobile terminal and suppress download frequency To do.

The facility display system of the present invention includes a portable terminal and a server, and map information created by the server in response to a request from the portable terminal by an inspection operator who operates the portable terminal on the background map on the portable terminal. It is an equipment display system using a mobile terminal that displays information and the location of equipment and equipment information , and performs an update operation related to addition and deletion of the equipment and movement by operation of the mobile terminal by an inspection operator , The mobile terminal includes a request transmission unit that transmits a request for requesting a predetermined operation to the server, a response reception unit that receives a response to the request from the server, a background map image and a facility symbol that represent a background map. mobile phone to store the composite map image obtained by superimposing the equipment symbol image and background and equipment symbol to represent An image storage unit, a map display screen for displaying the composite map image, map display unit that performs processing for displaying the synthesized map image to the map display screen, a temporary drawing equipment symbols on the map display screen provided with a temporary drawing unit for carrying out, the server, and a response transmitting unit that transmits a request receiving unit that receives a request for requesting a predetermined operation from the mobile terminal, a response to the request to the mobile terminal, It includes a server image storage unit for storing composite map image obtained by superimposing equipment symbol image and background and equipment symbol representing a background map image and equipment symbol representing a map background, the facility information database storing facility information the background map image and the facility Singh downloaded from the server is stored in the portable image storage unit The map image and the composite map image are used for the update operation related to the equipment, and are updated to the composite map image using the background map image and the equipment symbol image by an operation of the portable terminal by an inspection operator. The facility symbol image related to the target is temporarily drawn, the request for generating the composite map image including the facility information of the facility symbol related to the update target is transmitted from the portable terminal to the server, and the server is updated Generating the composite map image to be updated based on the equipment information of the equipment symbol related to, and the portable terminal stops the temporary drawing after downloading the composite map image from the server by the operation of the inspection operator, By displaying the composite map image, the update of the equipment symbol on the portable terminal is expressed .

According to the equipment display system according to the present invention, the equipment related to the update target in the composite map image using the background map image, the equipment symbol image, and the composite map image downloaded from the server and stored in the portable image storage unit. by temporarily draw symbol image in a portable terminal, without waiting for the generation time and download composite map of the server, the drawing performance is improved if by equipment symbols updated on the mobile terminal is displayed. Furthermore, by downloading composite map image from the server and the updated equipment symbols, it is possible to suppress the frequency of downloads, rendering performance improved if.

The block diagram of the map display system in this invention. The figure which shows the background map image managed according to scale. The figure which shows the synthetic | combination map image managed according to scale. The figure which shows the example of an equipment symbol image. The figure which shows an equipment information database. The figure which shows the background map image, synthetic | combination map image, and equipment symbol image which are stored in a portable terminal. The figure which shows the synthetic | combination map image displayed on the portable terminal. The figure explaining temporary drawing in the portable terminal at the time of equipment symbol addition. The figure explaining discrimination | determination of the synthetic map image of the update object at the time of equipment symbol addition. The figure explaining the production | generation of the synthetic map image at the time of an equipment symbol addition. The figure which shows the regenerated synthetic | combination map image displayed on the portable terminal. The figure explaining temporary drawing in the portable terminal at the time of equipment symbol deletion. The figure explaining discrimination | determination of the synthetic map image of the update object at the time of equipment symbol deletion. The figure explaining the production | generation of the composite map image at the time of equipment symbol deletion. The figure explaining movement operation of an equipment symbol. The figure explaining temporary drawing (movement origin) in a portable terminal at the time of equipment symbol movement. The figure explaining the temporary drawing (movement destination) in the portable terminal at the time of equipment symbol movement. The figure explaining the production | generation of the synthetic map image at the time of equipment symbol movement. The figure which shows the synthetic | combination map image at the time of map movement. The figure explaining the background map image used as the download object at the time of map movement. The figure explaining the composite map image used as the download object at the time of map movement. The figure which shows the background map image and synthetic | combination map image used as the deletion object at the time of map movement. The figure which shows the synthetic | combination map image at the time of map expansion / reduction. The figure explaining the composite map image used as the download object at the time of map expansion / reduction. 3 is a flowchart in the first embodiment. 10 is a flowchart according to the second embodiment. 10 is a flowchart according to the third embodiment. 10 is a flowchart according to the fourth embodiment. 10 is a flowchart according to the fifth embodiment. 7 is a flowchart according to the sixth embodiment.

Hereinafter, the basic configuration of an embodiment of the present invention will be described with reference to FIGS.
The present invention is a map display system including a mobile terminal 1 as a map display device and a server 2 as a map generation device. The mobile terminal 1 and the server 2 are connected by a wireless network 3.
The portable terminal 1 includes a request transmission unit 11 that transmits a request to the server 2, a response reception unit 12 that receives a response from the server 2, a background map image that represents a background map, and an equipment symbol image that represents an equipment symbol. A portable image storage unit 13 that stores a composite map image in which a background and equipment symbols are superimposed, a portable image management unit 14 that performs processing related to the management of the image, and a map display screen 15 for displaying the composite map image A map display unit 16 that performs processing for displaying the composite map image on the map display screen 15, a temporary drawing unit 17 that performs temporary drawing of equipment symbols on the map display screen 15, and an inspection operator And an input device 18 for operating equipment symbols (see FIG. 1).

  The server 2 includes a request reception unit 21 that receives a request from the mobile terminal 1, a response transmission unit 22 that transmits a response to the mobile terminal, a background map image that represents a background map, and an equipment symbol image that represents an equipment symbol A server image storage unit 23 that stores a composite map image in which the background and equipment symbols are superimposed, a server image management unit 24 that performs processing related to the management of the image, and a server image generation unit 25 that generates the composite map image And an equipment information database (equipment information DB) 26 for storing equipment information (equipment type, rectangle, equipment coordinates, overlap information), and a DB for adding / updating / deleting equipment information stored in the equipment information DB 26 The access unit 27 is configured (see FIG. 1).

The portable image management unit 14 and the server image management unit 24 of the portable terminal 1 store the background map image, the synthesized map image, and the equipment symbol image as described above.
The background map image is provided with “coordinates / width / height as a base point” as management information, and is managed by a folder or the like according to the scale (see FIG. 2). In the example of FIG. 2, the base point coordinates are the upper left coordinates, and background map information of three different scales of 1/2000, 1/3000, and 1/4000 is stored and managed.
As for the composite map image, “upper left coordinates / width / height / update date / time” is given as management information, and is managed by a folder or the like by scale (see FIG. 3). The update date / time indicates the date / time when the composite map image was generated by the server. The mobile terminal 1 downloads the composite map image from the server 2 by comparing the update date / time of the composite map image stored in the mobile image management unit 14 and the update date / time of the composite map image stored in the server image storage unit 23. In that case, the object can be determined. “Equipment type” is assigned to the equipment symbol image as management information (see FIG. 4).

The breakdown of the equipment information managed by the equipment information DB 26 of the server 2 includes "equipment type" indicating the type of equipment, "rectangle" indicating the shape and size of the equipment, "equipment coordinates" indicating the position of the equipment, which equipment It has “overlap information” indicating the order in which the symbols overlap (see FIG. 5).

Embodiment 1 FIG.
A first embodiment of the present invention will be described below with reference to FIGS. 6 and 7 and FIG. 25 showing an operation flow. In the first embodiment, a composite image of a background map image and equipment symbols is generated and displayed on a mobile terminal.
The inspection worker performs an operation of displaying a map on the portable terminal (step S101). The request transmission unit 11 of the portable terminal 1 transmits a request for image download to the server 2 (step S102). The images to be downloaded are the background map image for all scales in the map display range, the composite map image, and all equipment symbol images. FIG. 6A shows a background map image 31, and a part of the download target 32 is a display range 33. FIG. 6B shows a composite map image 41, and a part of the download target 42 is a display range 43. FIG. 6C shows an equipment symbol image 51 and a download target 52.

The server image management unit 24 determines the background map image 31 and the composite map image 41 to be stored in the mobile terminal 1 from the map display range (step S103). The response transmission unit 22 of the server 2 generates a response “stored image to be downloaded” and transmits it to the mobile terminal 1 (step S104). The response receiving unit 12 of the mobile terminal 1 receives the response. The portable image management unit 14 of the portable terminal 1 stores the downloaded image in the portable image storage unit 13 (step S105). The map display unit 16 of the portable terminal 1 displays the composite map image on the map display screen 15 as shown in FIG. 7 (step S106).
Since the map display system that implements the above method stores the background map image and the composite map image of the entire scale in the display range in the portable image storage unit 13, communication with the server 2 is suppressed, and the portable terminal 1 Drawing performance can be improved.

Embodiment 2.
The second embodiment of the present invention will be described below with reference to FIGS. 8 to 11 and FIG. 26 showing an operation flow. The second embodiment shows means for adding an additional symbol of equipment to the display screen of the portable terminal.
The inspection operator performs an operation of adding equipment symbols on the map of the portable terminal 1 as shown in FIG. 8A (step S201). First, the map display unit 16 of the mobile terminal 1 temporarily draws the additional equipment symbol image 65 on the composite map image 61 of the mobile image storage unit 13 shown in FIG. 8B, as shown in FIG. 8C. (Step S202). In FIG. 8B, the range 62 of the composite map image 61 matches the download target 42 of FIG. 6, and the display range 63 matches the display range 43 of FIG. Further, as shown in FIG. 8C, the vicinity range 64 of the additional symbol 65 and the added equipment symbol image 65 are combined to form a temporary drawing result 66.

  Next, the request transmission unit 11 of the mobile terminal 1 transmits a “request to generate and download the composite map image 71” request to the server 2 (step S203). The detailed breakdown of the request is “equipment information (equipment type, equipment coordinates, rectangle) of the equipment symbol 75 to be added” and “update date and time of the composite map image 71 stored in the portable image storage unit 13”. The server 2 can specify the image generation range (update target 74) based on the equipment information (equipment coordinates) of the equipment symbol 75, and can specify the composite map image to be downloaded based on the update date and time.

The DB access unit 27 of the server 2 adds the facility information 76 of the added facility symbol 75 to the facility information DB 26 (step S204). The server image management unit 24 determines the composite map image of the update target 74 based on the equipment information 76 (equipment type, equipment coordinates, rectangle) of the added equipment symbol 75 (step S205). (See Figure 9)
The server image generation unit 25 determines the size of the symbol 75 added from the facility information (rectangle) and the overlap and order of other symbols from the facility information (overlap information), and the range of change of the composite map image of the update target 74 77 is determined (step S206). In the change range 77, the server image generation unit 25 generates a composite map image 78 that is regenerated in such a manner that the background map image and the equipment symbol image are overlaid (step S207). (See Figure 10)

The server image management unit 24 stores the created composite map image in the server image storage unit 23 (step S208). The server image management unit 24 determines a composite map image to be downloaded from the mobile terminal 1 based on “update date and time of the composite map image stored in the mobile image storage unit 13” obtained from the mobile terminal 1. (Step S209).
The response transmission unit 22 of the server 2 generates a “response storing the composite map image to be downloaded” and transmits it to the mobile terminal 1 (step S210). The portable image management unit 14 of the portable terminal 1 stores the composite map image 81 in the portable image storage unit 13 (step S211). The temporary drawing unit 17 of the mobile terminal 1 stops the temporary drawing (step S212). The map display unit 16 of the portable terminal 1 displays the composite map image in the display range 83 on the map display screen 15 (step S213). (See Figure 11)

  The map display system that implements the above method improves the drawing performance by displaying the added equipment symbol on the portable terminal 1 without waiting for the generation time and download of the composite map in the server 2. Further, by downloading the background map image and the composite map image from the server 2 after the equipment symbol is added, the download frequency can be suppressed, and the drawing performance is improved.

Embodiment 3.
A third embodiment of the present invention will be described below with reference to FIGS. 12, 13, 14 and FIG. 27 showing an operation flow.
The inspection operator performs an operation (FIG. 12A) for deleting the equipment symbol on the map of the portable terminal 1 (step S301). The temporary drawing unit 17 of the portable terminal 1 calculates a change range 98 due to equipment symbol deletion (step S302). The temporary drawing unit 17 temporarily draws the equipment map excluding the deletion symbol 95 on the background map in the change range 98 (step S303). (See FIG. 12 (c))

FIG. 12B shows a composite map image 91 of the portable image storage unit 13 and displays a display range 93 and an update target 94. The symbol 95 to be deleted can be designated with the cursor 90. FIG. 12C is a diagram showing a state of temporary drawing. An image 92 in which the symbols in the change range 98 are deleted, a background map image 93 in the change range 98, and an equipment symbol image 97 excluding the deletion symbol 95, Can be combined to obtain a temporary drawing result 96.
The request transmission unit 11 of the portable terminal 1 transmits a “request to generate and download a composite map image” request to the server 2 (step S304). The detailed breakdown of the request is “equipment information (equipment type, rectangle, equipment coordinates) of equipment symbol to be deleted” and “update date and time of the composite map image stored in the portable image storage unit 13”. The server 2 can specify the image generation range (update target 94) based on the equipment information (equipment coordinates) of the equipment symbol, and can specify the composite map image to be downloaded based on the update date. The DB access unit 27 of the server 2 deletes the facility information 99 of the deleted facility symbol 95 from the facility information DB 26 (step S305). The server image management unit 24 determines the composite map image 91 of the update target 94 based on the equipment information (equipment coordinates, rectangle) 99 of the deleted equipment symbol 95 (step S306). (See Figure 13)

  The server image generation unit 25 determines the size of the symbol deleted from the facility information (rectangle) and the overlap and order of other symbols from the facility information (overlap information), and changes the composite map image 98 to be updated 94. Is determined (step S307). In the change range 98, the server image generation unit 25 regenerates the composite map image 100 by overlapping the background map image 93 and the equipment symbol image 97 excluding the deletion target 95 (step S308). (See Figure 14)

The portable terminal 1 downloads an image from the server 2 and displays the composite map image on the map display screen 15 (see FIG. 12A) by the same method as in the second embodiment (step S309).
The map display system that realizes the above method improves the drawing performance by displaying the equipment symbols deleted from the portable terminal 1 without waiting for the generation time and download time of the composite map in the server 2.
Also. By downloading the background map image and the composite map image from the server 2 after the equipment symbol is deleted, the frequency of downloading can be suppressed, and the drawing performance is improved.

Embodiment 4.
A fourth embodiment of the present invention will be described below with reference to FIGS. 15 to 18 and FIG. 28 showing an operation flow.
The inspection operator performs an operation of moving the equipment symbol on the map of the mobile terminal (step S401). (See Figure 15)
At the equipment symbol movement source, a change range 108a associated with the equipment symbol movement is calculated (step S402). The temporary drawing unit 17 of the portable terminal 1 temporarily draws the facility map excluding the background map and the moving symbol 105 in the change range 108a at the movement source (step S403). (See Figure 16)

  FIG. 16A shows a composite map image 101a of the portable image storage unit 13 and displays a display range 103, an update target 104a, and a moving symbol 105. The moving symbol 105 can be specified with the cursor 90a, and the destination can be specified with the cursor 90b. FIG. 16B is a diagram showing a state of temporary drawing. The image 102a from which the symbol of the change range 108a is deleted, the background map image 103a of the change range 108a, and the equipment symbol image 107a excluding the moving symbol 105, Can be combined to obtain a temporary drawing result 106a.

After the facility symbol moving operation is completed, the temporary drawing unit 17 of the portable terminal 1 calculates the change range 108b associated with the facility symbol movement at the facility symbol destination (step S404). The temporary drawing unit 17 temporarily draws the equipment symbol 105 that has moved on the composite map image in the change range 108b (step S405). (See Figure 17)
FIG. 17A shows the composite map image 101b of the portable image storage unit 13 and displays the display range 103, the update target 104b, and the moving symbol 105. FIG. 17B is a diagram showing a state of temporary drawing. The image 102b from which the symbol in the change range 108b is deleted, the background map image 103b in the change range 108b, and the moving symbol image 105 are combined to temporarily display. The drawing result 106b can be obtained.

  The request transmission unit 12 of the portable terminal 1 transmits a “request to generate and download a composite map image” request to the server 2 (step S406). The detailed breakdown of the request is “equipment information of equipment symbol 105 to be moved (equipment type, rectangle, equipment coordinates before movement, equipment coordinates after movement)”, “composite map image stored in portable image storage unit 13” Update date and time ". The server 2 may specify an image generation range (update targets 104a and 104b) based on the facility information (equipment coordinates) of the facility symbol, and may specify a composite map image to be downloaded based on the update date and time. it can.

  The DB access unit 27 of the server 2 accesses the facility information DB 26 and changes the facility information (facility coordinates, overlap information) of the facility symbol of the movement target 105 (step S407). The server image management unit 24 uses the combined map image of the update target 104a at the movement source based on the facility information of the moved facility symbol (equipment coordinates before movement, rectangle), and the facility information of the moved facility symbol 105 (after movement). The composite map image of the update target 104b at the movement destination is determined based on the equipment coordinates (rectangle) (step S408). The server image generation unit 25 determines the size of the symbol moved from the facility information (rectangle) and the overlap and order of other symbols from the facility information (overlap information), and changes the composite map image of the update targets 104a and 104b. The ranges 108a and 108b are determined (step S409).

The server image generation unit 25 generates the composite map image 110a in the form of overlapping the background map image 103a and the equipment symbol image 107a excluding the movement target 105 in the change range 108a at the movement source (step S410), and changes at the movement destination. In the range 108b, the composite map image 110b is generated in such a manner that the background map image 103b and the equipment symbol image 105 to be moved are overlapped (step S411). (See Figure 18)
The temporary drawing unit 17 temporarily draws the background map and the facility symbols excluding the moving symbols in the range of change at the movement source (step S412).

The portable terminal 1 downloads an image from the server 2 and displays the composite map image on the map display screen 15 by the same method as in the second embodiment (step S413).
The map display system that implements the above method improves the drawing performance by displaying the equipment symbol moved on the portable terminal 1 without waiting for the generation time and download time of the composite map in the server 2. Also. By downloading the background map image and the composite map image from the server after the equipment symbol is moved, the download frequency can be suppressed, and the drawing performance is improved.

Embodiment 5.
A fifth embodiment of the present invention will be described below with reference to FIGS. 19 to 22 and FIG. 29 showing an operation flow.
The inspection operator performs an operation of moving the map of the mobile terminal 1 (step S501). The map display unit 16 of the portable terminal 1 changes the map display range (step S502). In the changed display range, the portable image management unit 14 specifies a composite map image to be displayed (see FIG. 19B), and the map display unit 16 displays the composite map image (step S503) (FIG. 19 ( a)).
In the case where the temporary drawing process in the second embodiment, the third embodiment, and the fourth embodiment is being executed, the map display unit 16 displays the composite map image while maintaining the temporary drawing (step S504). After the movement of the map is completed, the request transmission unit 11 of the mobile terminal 1 transmits a request “request download of background map image and composite map image” (step S505). The detailed breakdown of the request is “map display range before moving”, “map display range after moving”, and “update date and time of composite map image”. Based on these, the server 2 can specify a background map image and a composite map image to be downloaded.

The server image management unit 24 determines a background map image to be downloaded from the map display range 122 before movement and the map display range 123 after movement (step S506). (Refer to FIG. 20) That is, a region that includes the map display range 122 before movement and the map display range 123 after movement is considered, and cells that do not exist in the portable image storage unit 13 when viewed in cell units when downloading them. A background map image is downloaded for 124.
The server image management unit 24 determines a composite map image to be downloaded from the map display range 122 before movement, the map display range 123 after movement, and the update date / time of the composite image (step S507). (See Figure 21)
That is, considering a region in which the map display range 122 before movement and the map display range 123 after movement are combined, the background map image of the cell 124 that does not exist in the portable image storage unit 13 when viewed in cell units when downloading them. Download. In addition, regarding the cells 125 related to both before and after the movement, the update date and time is confirmed to determine whether or not to download.

  The response transmission unit 22 of the server 2 generates a “response storing the background map image to be downloaded and the composite map image” and transmits the response to the portable terminal 1 (step S508). The portable image management unit 14 of the portable terminal 1 stores the map image in the portable image storage unit 13 (step S509). The portable image management unit 13 determines and deletes the background map image 126 and the composite map image 127 to be deleted from the map display range 122 before movement and the map display range 123 after movement (step S510). (See Figure 22)

The temporary drawing unit 17 of the mobile terminal 1 stops the temporary drawing (step S511). The map display unit 16 of the portable terminal 1 displays the composite map image on the map display screen 15 (step S512). (See FIG. 19 (a))
The map display system that realizes the above method displays the movement of the map by displaying the composite map image in the portable image storage unit without waiting for the download of the composite map image from the server 2, thereby improving the drawing performance. To do.
Also, by downloading the background map image and the composite map image from the server after the map movement operation, the frequency of download can be suppressed, and the drawing performance is improved.

Embodiment 6.
A sixth embodiment of the present invention will be described below with reference to FIGS. 23 and 24 and FIG. 30 showing an operation flow.
The inspection operator performs an operation for enlarging or reducing the map of the mobile terminal (step S601). The map display unit 16 of the mobile terminal 1 calculates the display range after the enlargement / reduction (step S602). The portable image management unit 14 determines a composite map image corresponding to the scale after enlargement / reduction from the portable image storage unit 13 based on the display range (step S603). In the changed scale and display range, the map display unit 16 displays the composite map image (step S604). (See FIG. 23 (a))
FIG. 23B shows images before and after the enlargement / reduction of the composite map image 131 of the portable image storage unit 13, and the images in the display range 133 show the size of the symbol before and after enlargement / reduction. The scale does not change, but the scale of the background map changes. FIG. 23 shows an example of enlargement.

  When the temporary drawing process in the second embodiment, the third embodiment, and the fourth embodiment is executed, the temporary drawing is performed again after the scale change. After the map enlargement / reduction is completed, the request transmission unit 11 of the mobile terminal 1 transmits a “request for download of the composite map image” request (step S605). The detailed breakdown of the request includes “scale after enlargement / reduction”, “map display range”, and “update date / time of composite map image”. The server image management unit 24 determines a composite map image to be downloaded from “scale after enlargement / reduction”, “map display range”, and “update date / time of composite image” (step S606). (See Figure 24)

  That is, considering both the map display range 135 before enlargement / reduction and the map display range 136 after enlargement / reduction, the background map for cells that do not exist in the portable image storage unit 13 when viewed in cell units when downloading them. Download images. 23 and 24 show examples of enlargement, and there is no newly required background map data. In addition, for the cells related to both before and after the movement, the update date and time is confirmed to determine whether or not to download.

The portable terminal 1 downloads an image from the server 2 and displays the composite map image on the map display screen 15 by the same method as in the second embodiment (step S607). (See FIG. 23 (a))
Rendering performance is improved because the map display system that realizes the above method displays the map scale by displaying the composite map image in the portable image storage unit without waiting for the download of the composite map image from the server. To do. Further, by downloading the background map image and the composite map image from the server after the map enlargement / reduction operation, the download frequency can be suppressed, and the drawing performance is improved.

1 mobile terminal, 2 server, 3 wireless network, 11 request transmitter,
DESCRIPTION OF SYMBOLS 12 Response receiving part, 13 Portable image storage part, 14 Portable image management part, 15 Map display screen, 16 Map display part, 17 Temporary drawing part, 18 Input device, 21 Request receiving part, 22 Response transmission part, 23 Server image storage Unit, 24 server image management unit, 25 server image generation unit, 26 facility information database (equipment information DB), 27 DB access unit, 31 background map image, 32 download target, 33 display range, 42 download target, 43 display range, 51 equipment symbol image, 52 download target, 61 composite map image, 62 composite map image range, 63 display range, 64 additional symbol neighborhood, 65 additional symbol, 66 temporary drawing result, 71 composite map image, 74 update target, 75 added equipment symbols, 76 equipment information, 7 changed range, 78 regenerated composite map image, 81 composite map image, 83 display range, 90, 90a, 90b cursor, 91 composite map image, 92 symbol deleted image, 93 background map image, 94 update target, 95 Deleted symbol, 96 Temporary drawing result, 97 Equipment symbol image excluding deleted symbol, 98 Change range, 99 Deleted equipment symbol, 100 Regenerated composite image, 101a, 101b Composite map image, 102a, 102b Delete symbol Image, 103a, 103b background map image, 104a, 104b update target, 105 moving symbol, 106a, 106b temporary drawing result, 107a equipment symbol image excluding moving symbol, 108a, 108b change range, 110a, 110b regenerated Composite image, 122 Map display range before movement, 123 Map display range after movement, 124 Cell not existing in portable image storage unit, 125 Cell related to both before and after movement, 126 Background map image to be deleted, 127 Composite map image, 131 composite map image, 133 display range, 135 map display range before enlargement / reduction, 136 map display range after enlargement / reduction.

Claims (8)

Map information created by the server in response to a request from the portable terminal by an inspection operator who operates the portable terminal and includes a portable terminal and a server. The equipment display system uses a mobile terminal that performs an update operation related to addition, deletion, and movement of the equipment by operating the mobile terminal by an inspection worker, and the mobile terminal is connected to the server by a predetermined number. a request transmitting unit that transmits a request for the operation, and the response receiving unit that receives a response to the request from the server, the facility symbol image and the background representing a background map image and equipment symbol representing a map background a portable image storage unit for storing composite map image obtained by superimposing equipment symbols, the composite map image It includes a map display screen for displaying a map display unit that performs processing for displaying the synthesized map image to the map display screen, the a temporary drawing unit for carrying out a temporary drawing equipment symbols on the map display screen The server includes a request receiving unit that receives a request for a predetermined operation from the portable terminal, a response transmitting unit that transmits a response to the request to the portable terminal, and a background map image that represents a background map. and equipment symbol image and the background representing the facilities symbols and the server image storage unit for storing composite map image obtained by superimposing equipment symbols, and a facility information database storing facility information, the portable image is downloaded from the server The background map image, the equipment symbol image, and the composite map image stored in the storage unit Is used for the update operation related to the equipment, and the equipment symbol image related to the update target in the composite map image using the background map image and the equipment symbol image by the operation of the portable terminal by an inspection operator Is transmitted from the portable terminal to the server including the facility information of the facility symbol related to the update target, and the server transmits the request of the facility symbol related to the update target. The composite map image to be updated is generated based on the information, and the portable terminal downloads the composite map image from the server by the operation of the inspection operator, stops the temporary drawing, and displays the composite map image. An equipment display system using a mobile terminal, characterized by expressing an update of equipment symbols on the mobile terminal . The equipment using the mobile terminal according to claim 1, wherein the equipment information database has equipment information, equipment shape, equipment coordinates, and overlapping information indicating which equipment and in what order. Display system.   The facility display system using a portable terminal according to claim 1, wherein the background map image has coordinates, width, and height as a base point, and is stored and managed at different scales. The mobile terminal draws one o'clock in the form of overlapping the equipment symbol image to be added to the composite map image by the operation of the inspector, the server the facilities based on the updated of the composite map image facility information symbol generate, after downloading the composite map image the mobile terminal from the server, and stops temporarily drawing, by displaying the synthesized map image, to display the additional the equipment symbols onto the mobile terminal The equipment display system using the portable terminal according to claim 1. The mobile terminal is overlapped with the composite map images of corresponding location on the background map image and the equipment symbol excluded the above equipment symbol image of the specified deletion by the operation of the inspector, the specified above equipment symbol draw one o'clock in the deleted state, the server generates a composite map image of the original to be updated equipment information of the equipment symbol, the mobile terminal to download the above-mentioned composite map image from the server by the operation of the inspection worker after stops temporarily drawing, by displaying the synthesized map image, equipment display system using a portable terminal according to claim 1, characterized in that to represent the deletion of the facility symbols on a mobile terminal. The mobile terminal is overlapped with the composite map images of corresponding location on the background map image and the specified deletion of the facility symbol is removed the equipment symbol image in the source equipment symbols by the operation of the inspector, draw one o'clock in to remove the equipment symbol specified migration target state, the equipment symbol to be moved in the destination equipment symbols while deleting the facility symbols to be moved is specified from the corresponding portion of the composite map images overlaid drawing temporarily, the server generates a composite map image of the original to be updated equipment information of the equipment symbol, the mobile terminal after downloading the above-mentioned composite map image from the server by the operation of the inspection worker, stop temporary drawing, by displaying the synthesized map image, especially to express the movement of the equipment symbols on a mobile terminal Facilities display system using a portable terminal according to claim 1 wherein. If the processing of the temporary drawing by an operation of a check operator in the mobile terminal is executed, displaying a moving map on the mobile terminal by changing the display range of the composite map images in a manner which maintains a temporary drawing and, said server from the map display range after moving the map display range before moving, to determine the background map image and combining the map image to be downloaded, the mobile terminal can download those images from the server, the after displaying on the portable terminal, by stopping temporarily drawing, delete unnecessary the background map image and the synthesized map image from the mobile terminal, characterized by representing the movement of the map on the mobile device A facility display system using the portable terminal according to any one of claims 1, 4, 5, and 6. The mobile terminal after discriminating the composite map image stored in the mobile terminal according to the scale that has been changed by operation of the inspector, and displayed on the mobile terminal, if the processing of the temporary drawing is running after scaling, implemented a temporary drawing again, the server by the server to determine the composite map images to be downloaded based on the display range of the map after scale change, the mobile terminal operation of the inspector after downloading the composite map images from stops temporarily drawing, by displaying the synthesized map image, claim 1, characterized in that on a map after scale change on the portable terminal, according to claim 4 A facility display system using the portable terminal according to claim 5.

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