JP2003122249A - Geographic information acquisition method and its device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a geographic information acquisition method and apparatus capable of improving the work efficiency in the field by enabling the acquisition of the geographic information in the field. SOLUTION: By bringing a reader 20 close to a sign 50 arranged at a fixed position with respect to a ground G, identification information of the sign 50 stored in a storage element provided in the sign is read from the outside, and The identification information is transmitted to the server 2 via the network 4, and among the geographic information stored in the database 3, the relevant geographic information of the indicator 50 is received from the server 2 via the network 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for obtaining geographical information using an indicator suitable for indicating a position or a buried object.

[0002]

2. Description of the Related Art Conventionally, in order to mark the position of a land or road, the boundary of a land, a survey point, etc., a marking device is driven into the ground. It has been proposed to incorporate a storage element that stores the identification number of the indicator into this indicator, read this identification number from the outside, and read various information registered in the database using this identification number as a search key. There is.

[0003] On the other hand, GIS (Geographic Informa) that manages and processes information about the position based on the geographical position.
tion Systems: Geographic Information Systems) are being used. The government and the private sector have constructed GIS to show and utilize information such as the location of underground buried objects on a map. As an example of GIS, the administrative agency manages the water supply and sewerage management system that associates the location of pipes with incidental information, information about the road itself, and information about underground buried objects and above-ground facilities, etc. on a map. Road maintenance system, as well as land and house information management system that can display the contents of registers and public maps in a number table and map and manage the information of land and houses that are the basis of taxation such as property tax is there. Furthermore, the integration of information is being promoted,
Systems have also been realized that provide a map that combines a highly accurate cadastral map obtained by surveying and the like with various information arrangements underground and above ground.

In the geographical information managed by the GIS, if the geographical information of a certain area is required, the geographical information can be obtained from the GIS using a predetermined lot number of the area as a search key. When geographic information is needed locally, print out a map that reflects the local geographic information in advance, take it to the site, compare this map with the surrounding landscape, and target it. Find the land.

[0005]

[Problems to be Solved by the Invention] However, since it is complicated to find a target land by comparing a map with a landscape around the site, it is difficult to work locally.

The present invention has been made in view of the above circumstances, and provides a geographical information acquisition method and apparatus capable of improving local work efficiency by enabling local acquisition of geographical information. The purpose is to do.

[0007]

In order to achieve the above object, a geographical information acquiring method or device according to the present invention is a method or device for acquiring geographical information from a server provided with a database for accumulating geographical information. Then, by bringing the reader close to the indicator placed at a fixed position with respect to the ground, the identification information of the indicator stored in the storage element provided in the indicator is read from the outside, and this identification information is read by the server. Of the geographical information stored in the database, the geographical information related to the indicator is received from the server via the network.

According to this structure, by bringing the reader close to the indicator arranged at a fixed position with respect to the ground, the identification information of the indicator stored in the storage element provided in the indicator can be read out from the outside. Since the geographical information related to the indicator is received from this identification information, the geographical information can be obtained extremely accurately and easily at the site where the indicator is installed. Therefore, the work efficiency in the field can be improved.

Here, the "geographical information" means the position (latitude, longitude, altitude) of the land or road, the lot number, the boundary or survey point of the land, or the land ownership such as the owner of the land, or the road or the road. This is information that associates the location with the data on the above-ground buildings, the burial status of waterworks, sewers, gas pipes, and natural resources such as forests, rivers, and farmland. The "server provided with a database for accumulating geographical information" is a system for managing and processing this geographical information, that is, GIS. Further, the “identification information of the indicator” is, for example, an identification number assigned to each indicator. Furthermore, "geographical information related to the indicator" is, for example, geographical information at the position indicated by the indicator and its surroundings.

According to a preferred embodiment, the reading of the identification information of the indicator from the storage element is by non-contact.
With this configuration, even if the upper part of the indicator embedded in the ground is filled with fallen leaves or snow, the identification information can be easily read from the outside.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to the drawings. A geographic information network system including the geographic information acquisition device according to the present invention shown in FIG. 1 includes a plurality of geographic information acquisition devices 1 and a geographic information management server 2, which are connected to the Internet (communication network) 4. There is. The geographic information management server 2 is provided with a database 3 that stores geographic information. The geographic information management server 2 is the Internet 4
It is accessed from a terminal such as a personal computer (PC) via the.

The geographic information management server 2 is a GIS, and in this embodiment, is a cadastral GIS. The land ownership GIS is arranged by adding a lot number after investigating the boundary line of the land, the land area, and the land area, and the land number is attached as one section for each land ownership or usage type, and the attributes of the owner, land area, and land area are It is a system that manages managed data. In other words, for the coordinate value (position) consisting of latitude, longitude and height, the lot number,
It is a system that manages the owner, area, and land type such as residential land and urban area in association with each other. The geographic information management server 2 is a so-called Web-GIS, and provides geographic information by web pages.

The database 3 provided in the geographic information management server 2 stores, as geographic information, cadastral information including the land owner, area and land type as described above. As shown in a part of the map stored in the database 3 in FIG. 2A, roads R, land boundaries I, houses H, etc. are associated with accurate positions. Database 3 is
In addition to this map, the lot number, owner, area, etc. are stored as attribute data in association with each land. The database 3 may further store the underground buried object and its attribute in association with this map.

Further, the database 3 stores the identification number of the position indicator and attached information including the position of the position indicator, the installer, the installation time, and the like. Therefore, FIG.
As shown in (b), each position indicator 50A, 50B, 5
0C can be specified on the map. Although the geographical information of the database 3 is shown as a map for the sake of convenience, the database 3 actually stores the geographical information by coordinates, lengths, areas, topological structures, and the like.

Next, the position indicator 50 for reading the identification number by the geographic information acquisition device 1 of FIG. 1 will be described. In addition,
The position indicator 50 is driven into the ground to clarify the boundaries of the land during the land ownership survey. However, the position indicator 50 may be arranged at a fixed position with respect to the ground, and may be installed on the roof of a building, for example.

The position indicator 50 is a pile having a main body 51 embedded in the ground G and a head 52 exposed on the surface of the ground G. An information storage element 54 is built in the head 52. The identification number of the position indicator 50 is stored in the information storage element 54. That is, this identification number is a number assigned so as not to overlap for each position indicator 50, and since the position indicator 50 is embedded in the ground G and its position is fixed, the position indicator is identified by this identification number. The position of 50 can be specified. In addition,
The information storage element 54 has an identification number and a position indicator 5
Various information such as the position of 0, the installation time of the position indicator, and the installer may be stored.

The geographic information acquisition device 1 includes an information storage element 54.
2 which reads the identification information stored in the
0, a notebook PC 30 and a mobile phone 40.

Next, the operation of reading the identification number of the information storage element 54 by the reader 20 will be described. When the reader 20 is brought close to the head 52 of the position indicator 50 and a directional electromagnetic wave generated from the electromagnetic wave generator 21 of FIG. 3 incorporated in the reader 20 is transmitted toward the storage element 54. When a magnetic resonance phenomenon occurs, an identification number stored in a storage unit (not shown) of the information storage element 54 is transmitted from an antenna (not shown) of the information storage element 54 as an electromagnetic wave having a unique frequency. The transmitted electromagnetic wave is the receiver 22 of the reader 20.
Will be received at. As a result, the identification number of the information storage element 54 is read from the outside in a non-contact state.

The reader 20 is connected to the PC 30 by a cable, and the identification number received by the receiver 22 of the reader 20 is the PC.
It is input to 30. The PC 30 can also communicate with the mobile phone 40 shown in FIG. The connection between the PC 30 and the mobile phone 40 is carried out by inserting a data communication card for the mobile phone into a card slot of the PC and connecting the mobile phone and the card with an attached cable, or by connecting the mobile phone and P
This is realized by a method of performing infrared communication using the infrared communication port of C, and it becomes possible to connect to the Internet from the PC 30. The mobile phone 40 is
It may be a PHS (Personal Handy Phone) as long as it can connect the C30 and the Internet 4.

As shown in FIG. 3, the PC 30 has an identification information transmitting means 31 for transmitting an identification number to the geographic information management server 2 via the Internet 4 and a corresponding position among the geographic information stored in the database 3. The geographical information receiving means 32 which receives the geographical information relevant to the indicator 50 from the geographical information management server 2 via the internet 4.

A so-called WWW browser is installed in the PC 30. The identification information transmitting means 31 may be configured by the WWW browser and specific software to automatically transmit the identification information, or may be configured by only the WWW browser and the identification information input from the reader 20 and the geographical information. URL of information management server 2 (Un
An operator may input the iform Resource Locator) by operating a keyboard or a mouse. The geographical information receiving means 32 is composed of a WWW browser.
The W browser displays the geographic information provided by the geographic information management server 2 on the screen of the display device 33 such as a liquid crystal display.

Next, the operation of the above geographical information network system will be described. For example, an operator who visits the land and acquires the cadastral information in a specific land there, first, acquires the geographic information acquisition device 1 in FIG. 1, that is, the reader 20, the notebook PC 30, and the mobile phone 40.
Etc. are prepared. Next, the worker uses the position indicator 5 embedded in the ground G at a place which is considered to be the boundary of the land.
The reader 20 is brought closer to one of the zeros. Here, the position indicator 50 close to the reader 20 is replaced with the position indicator 50A.
I will keep it. At this time, when a directional electromagnetic wave is transmitted from the electromagnetic wave generator 21 of the reader 20 of FIG. 3 toward the information storage element 54, the identification number, which is the information stored in the information storage element 54, is output as an electromagnetic wave. , Reader 2
0 receiver 22 receives.

When the receiver 20 receives the electromagnetic wave, a converter (not shown) converts the identification number into digital data and outputs it to the identification information transmitting means 31 of the PC 30. The identification information transmitting means 31 that has received the identification number transmits this identification number to the server 2 via the Internet 4 (FIG. 1). The geographic information management server 2 that has received the identification number searches the database 3 using this identification number as a search key, and extracts cadastral information regarding the land including the position indicated by the position indicator 50 of this identification number. Specifically, the coordinate value including the latitude, longitude, and altitude of the position where the position indicator 50 is buried, the lot number, the owner, the area, and the land type are extracted together with the map. The geographic information management server 2 then transmits this cadastral information to the geographic information receiving means 32 of the PC 30. The map may be stored in advance in a hard disk (not shown) of the PC 30 and information other than the map may be transmitted from the server 2 to the geographical information receiving means 32 of the PC 30.

The geographic information receiving means 32 of the PC 30 which has received the cadastral information displays the cadastral information on the display device 33. 4A to 4D show some examples of the display screen 34 displayed on the display device 33. Figure 4 (a)
On the display screen 3 showing the entire periphery of the position indicator 50A.
4 is shown. On this display screen 34, a display line 36 showing a land boundary line, a display frame 37 showing a house, on a map showing a road 35 and the like around the position indicator 50A,
The mark of the position indicator 50A and the like are displayed. When an operator who views the display screen 34 operates to display more detailed information, the cadastral information of a specific land is displayed as shown in FIG. 4B. Specifically, the display line 36 showing the boundary line of a specific land and the display frame 3 showing a house
In addition to 7, the detailed information display column 38 showing the owner, area, type of land, etc. of this land is displayed. Further, as shown in FIG. 4C, a display screen 34 including an image 39 of a house on a specific land is operated by the operator.
Is displayed on the display device 33. The captured image 39 is captured when the position indicator 50A is buried in the ground and stored in the database 3. Further, as shown in FIG. 4D, the display screen 34 for displaying the underground buried object around the position indicator 50A is displayed on the display device 33 by the operation of the operator. Specifically, for example, a display line 61 indicating the buried position of the sewer pipe is displayed. In addition, the type (model) of the sewer pipe, the installation date, the last repair date, and the like may be displayed.

In this way, the P that the local worker has
Since the cadastral information around the position indicator 50A is displayed on the display device 33 of C30, the current position can be accurately and easily grasped, and detailed information about the land can be immediately obtained on the spot. be able to. Further, when the land at the position indicated by the position indicator 50A is not the target land for which information is to be acquired, the display screen 34 shown in FIG. The reader 20 may be brought closer to search for the target land.

When the geographic information is provided, the information providing fee is charged from the administrator of the geographic information management server 2 to the accessor from the PC 30. This request is made by card payment, for example. Incidentally, since access to the GIS is usually accompanied by charging in this way, a certain access restriction is made.

Next, a modification of this embodiment will be described. In this modification, the information storage element 54 of the position indicator 50 of FIG. 1 has a UR of the geographic information management server 2 in addition to the identification number.
I also remember L. Since the reader 20 also reads these pieces of information, these pieces of information are input to the PC 30 together with the identification number of the position indicator 50. The operator launches a WWW browser, and the identification information transmitting means 31 of the PC 30 in FIG.
Accesses the web page indicated by this URL.
Therefore, even if the software for automatically transmitting the identification information is not installed in the PC 30, the worker can connect to the appropriate geographical information management server 2 without checking the URL of the geographical information management server 2. It should be noted that a telephone number, which is a contact point of the geographic information management server, may be used instead of this URL. In this case, the operator obtains the URL of the geographic information management server 2 from this telephone number.

The geographical information acquisition apparatus according to this embodiment is
For example, when a real estate agent guides a person who wants to purchase land to the site, it can be used to accurately show various information about the land to prospective land buyers.

The geographic information acquisition apparatus according to this embodiment is also useful when brought in for repair work of an underground buried object such as a sewer pipe. The position indicator 50 indicates the sewer pipe, and the position of the position indicator 50 and this position indicator 50 are indicated on the display device 33 of the PC 30 possessed by the worker on the site together with the map around the worker. If the sewer pipe to be displayed is displayed, the worker can accurately and easily grasp the position where the sewer pipe is buried.
Therefore, if the buried object indicated by the position indicator 50 is the sewer pipe of the work target, if the lower part of the position indicator 50 is dug up, the sewer pipe will be reached immediately, so that the work at the site can be smoothly performed. If the buried object indicated by the position indicator 50 is not the work target sewer pipe, the peripheral position indicator 50 may also be brought close to the reader 20 to search for the work target sewer pipe. Even in this case, since the asphalt and the soil are not dug up unnecessarily, the work at the site goes smoothly.

In this embodiment, the geographic information management server 2 manages the cadastral information and the underground buried object information, but the geographic information management server may be any GIS.

[0031]

As described above, according to the geographical information acquisition method or apparatus of the present invention, the identification number stored in the storage element provided in the indicator placed at a fixed position with respect to the ground is read out, and this identification is performed. Since the geographical information related to the indicator is received from the number, the geographical information can be obtained extremely accurately and easily at the site where the indicator is installed. Therefore, the work efficiency in the field can be improved.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a geographic information network system including a geographic information acquisition device according to an embodiment of the present invention, in which a sign is shown by a vertical sectional view.

2A and 2B are diagrams showing information accumulated in a database in the geographic information network system of FIG. 1, and FIG. 2A is a diagram showing land ownership information on a map; FIG. 3 is a diagram showing the position of a position indicator on the map.

3 is a block diagram showing operations of a server, a personal computer, a reader and a sign in the geographic information network system of FIG.

4 (a) to (d) are diagrams showing geographical information displayed on the display device of the geographical information acquisition device of FIG.
Is a display screen of the entire periphery of the position indicator, (b) is a display screen showing details of cadastral information, (c) is a display screen showing a captured image of a house, and (d) is a display showing underground buried objects. It is a screen.

[Explanation of symbols]

2 ... server, 3 ... database, 4 ... network, 2
0 ... reader, 31 ... identification information transmitting means, 32 ... geographic information receiving means, 50 ... indicator, 54 ... storage element, G ... ground.

Claims (2)

[Claims] 1. A method for acquiring geographical information from a server provided with a database for accumulating geographical information, wherein the reader is brought close to the indicator arranged at a fixed position with respect to the ground, and The identification information of the indicator stored in the storage element provided is read out from the outside, this identification information is transmitted to the server via the network, and among the geographical information stored in the database,
A geographical information acquisition method, which receives geographical information related to the sign from the server via a network. 2. A network for a server provided with a reader for externally reading the identification information of the indicator stored in a storage element provided in the indicator arranged at a fixed position with respect to the ground, and a server provided with a database for accumulating geographical information. Identification information transmitting means for transmitting the identification information via the network, and geographic information receiving means for receiving the geographic information related to the indicator from the server via the network among the geographic information stored in the database. Geographic information acquisition device.