WO2018051398A1

WO2018051398A1 - System for displaying degree of safety of ground

Info

Publication number: WO2018051398A1
Application number: PCT/JP2016/076932
Authority: WO
Inventors: 山本　強; 和幸磯野; 芳春横山
Original assignee: 地盤ネットホールディングス株式会社
Priority date: 2016-09-13
Filing date: 2016-09-13
Publication date: 2018-03-22

Abstract

[Problem] To provide a system for displaying the degree of safety of ground, said system being capable of providing a user with ground data for a current location and even a location distanced in any direction from the current location, in an easy-to-understand manner. [Solution] A system for displaying the degree of safety of ground is provided with a degree-of-safety server and a mobile terminal. The degree-of-safety server is provided with: a soil improvement database which stores, for each of a plurality of sets of location information, information about whether or not soil improvement work is necessary; and a server control unit which searches the soil improvement database on the basis of location information, calculates a soil work score, and calculates the degree of safety of ground on the basis of the soil work score. The mobile terminal is provided with an input/output unit, a location acquisition unit, a direction acquisition unit, an attitude acquisition unit, an image capture unit, and a control unit which: calculates, as acquired location information, location information about a surface of ground toward which the image capture unit is oriented to capture an image, on the basis of current location information acquired by the location acquisition unit, a direction acquired by the direction acquisition unit, and attitude information acquired by the attitude acquisition unit; acquires the degree of safety of the ground from the degree-of-safety server on the basis of said acquired location information; and outputs the degree of safety of the ground to the input/output unit.

Description

Ground safety display system

The present invention relates to a ground safety level display system.

When building a building on land, it is usually done to investigate the ground of the land. The results of this survey are difficult for general owners to understand. In addition, when considering the purchase of land, it is costly to investigate all the ground of the considered land.

Furthermore, if the safety level of the ground can be confirmed easily, it will be possible to evacuate to a safer area in the event of a disaster such as an earthquake.

In this regard, the old map and the new map are stored in the server database, the current position is acquired by the mobile terminal and transmitted to the server, and the old map and the new map are referred to based on the current position received by the server. A system has been proposed in which the strength of the ground is determined from changes in the ground, the determined strength is transmitted to the mobile terminal, and the mobile terminal displays the ground strength with a score (for example, Patent Document 1).

However, this ground data is only an estimated value from the map, and the accuracy is low. Also, depending on this technology, only the ground strength at the current position of the mobile terminal can be displayed, and in order to obtain the ground strength at a location away from the current location, it is necessary to move to that location.

By the way, the current position and the imaging direction of the imaging unit are acquired by the position measuring unit and the attitude measuring unit of the portable terminal, a three-dimensional virtual space corresponding to the captured image is generated, and this virtual space is in the case of a flood. A system has been proposed in which the depth of water immersion is acquired from a server and displayed superimposed on an image captured (for example, Patent Document 2).

However, even in this system, what is displayed is the current position and the inundation depth in the immediate range, and the image in the depth direction is simply a plot of the inundation depth at the current position in the virtual space. Since the inundation depth is not reacquired from the server from the position data, the accuracy is low.

Japanese Patent No. 5538449 Japanese Patent No. 5862865

The problem to be solved by the present invention is to provide a ground safety level display system that can easily provide a user with ground data at a current position and ground data in an arbitrary direction away from the current position.

The present invention calculates a ground construction score by searching the ground improvement database based on the designated location information, and calculates a ground construction score based on the specified location information. A server control unit that calculates a ground safety level, a safety level server, an input / output unit that inputs and outputs information, a position acquisition unit that acquires current position information, and an orientation acquisition unit that acquires a direction A posture acquisition unit that acquires posture information, an imaging unit that captures an image, the current position information acquired by the position acquisition unit, the azimuth acquired by the azimuth acquisition unit, and the posture acquisition unit Based on the posture information, the position information of the ground in the imaging direction of the imaging unit is calculated as acquisition position information, and the ground safety level is acquired from the security level server based on the acquisition position information. Providing a control unit for outputting a ground confidence level to the input-output unit, the ground safe level display system comprising a portable terminal, the comprising a.

According to the present invention, it is possible to provide a ground safety level display system that can easily provide the user with ground data at a location in an arbitrary direction away from the current position as well as the current position.

The figure which shows the structure of a ground safety degree display system. The figure which shows the example of the landform classification information which a land condition map database stores. The figure which shows the example of the environmental condition information which an environmental condition diagram database stores. The figure which shows the example of the national land numerical information which a national land numerical information database stores. The figure which shows the example of the ground improvement information which a ground improvement database stores. The figure which shows the data structure of a natural environment table. The figure which shows the data structure of a landslide disaster danger location table. The figure which shows the data structure of a construction necessity score table. The flowchart which shows the reliability display operation | movement by the server control part and the control part of a portable terminal. The figure which shows the relationship between "present position" and "position ahead of an imaging direction". The figure which shows the example of the screen which the control part of a portable terminal displays on an input-output part.

Hereinafter, a ground safety display system according to an example of an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a configuration of a ground safety level display system. As shown in FIG. 1, the ground safety level display system includes a ground terminal 10, a safety level server 20, an application server 30, and a mobile terminal 40.

The ground terminal 10 can use a so-called personal computer, and transmits measured value data related to the ground to the safety level server 20 via the public communication line network 50 such as the Internet.

Measured value data can include, for example, the longitude and latitude of the measurement location, the so-called N value of the measurement location, the depth to the foundation ground of the measurement location, and other boring survey data.

The security server 20 is a so-called server computer, and communicates with a server control unit 201 including a CPU (central processing unit) that is an arithmetic device, and an input / output unit 202 including input / output devices such as a display, a keyboard, and a mouse. And a storage unit 204 including a storage device such as a memory and a hard disk drive.

The storage unit 204 is a land condition map database (hereinafter referred to as a land condition map D / B 204A. The database is also referred to as D / B) for storing terrain classification information for each position information of latitude and longitude, and for each position information. An environmental condition diagram D / B 204B for storing environmental condition information, a national land numerical information D / B 204C for storing national land numerical information for each position information, and a ground improvement D / B 204D for storing ground improvement information for each position information are stored. To do.

The application server 30 is a so-called server computer, and includes a control unit 301 including a CPU that is an arithmetic device, an input / output unit 302 including an input / output device such as a display, a keyboard, and a mouse, and a public communication line network 50. A communication unit 303 that performs communication, and a storage unit 304 that includes a storage device such as a memory and a hard disk drive.

The storage unit 304 stores a safety application 304A that the mobile terminal 40 downloads and installs via the public communication line network 50.

The mobile terminal 40 can use a so-called smartphone. The portable terminal 40 includes a control unit 401 including a CPU that is an arithmetic device, an input / output unit 402 such as a touch panel, a communication unit 403 that performs communication, a storage unit 404 including a storage device such as a memory, and a position acquisition unit 405. And an orientation acquisition unit 406, a posture acquisition unit 407, and an imaging unit 408.

The position acquisition unit 405 can use position measurement means such as GPS (Global Positioning System). In addition to GPS, so-called Wi-Fi access point information can also be used. The position acquisition unit 405 acquires the current position of the mobile terminal 40 and outputs the longitude / latitude of the current position.

The orientation acquisition unit 406 can use an electronic compass, that is, a geomagnetic sensor. The azimuth acquisition unit 406 acquires the imaging direction as the azimuth of the imaging unit 408 of the mobile terminal 40, and outputs it at a 45 ° pitch, for example, with 0 ° being north.

The posture acquisition unit 407 can use, for example, a three-axis gyro. The posture acquisition unit 407 outputs the pitch, that is, the rotation angle around the X axis, the roll, that is, the rotation angle around the Y axis, and the yaw, that is, the rotation angle around the Z axis, as posture information. The posture acquisition unit 407 may output each rotation angle at a 5 ° pitch.

The imaging unit 408 can use a camera equipped with a CCD sensor. The imaging unit 408 captures a moving image at the current position and outputs it to the input / output unit 402 in real time.

The security level server 20 is connected to an external D / B 60 such as an administrative institution via the public communication line network 50. Examples of the external D / B 60 include a land condition map of the Geographical Survey Institute of the Ministry of Land, Infrastructure, Transport and Tourism, a natural environment condition map of the National Land Information Division of the Ministry of Land, Infrastructure, Transport and Tourism, numerical national land information, and landslide hazard data. You may connect to overseas databases as needed.

FIG. 2 is a diagram showing an example of the landform classification information stored in the land condition map D / B 204A. As shown in FIG. 2, the land condition map D / B 204A stores terrain classification information for each position information. Examples of terrain classification information are, for example, “mountain slopes,” “cliffs,” “landslides,” “Pleistocene terraces”, and the like.

The safety level server 20 downloads the geological classification information for each position information stored in the external D / B 60 via the public communication line network 50 and stores it in the land condition map D / B 204A. The land condition map D / B 204A stores the downloaded terrain classification information together with the position information, for example, in an XML data format.

FIG. 3 is a diagram showing an example of environmental condition information stored in the environmental condition diagram D / B 204B. As shown in FIG. 3, the environmental condition diagram D / B 204B stores environmental condition information for each position information. Specific examples of the environmental condition information include, for example, “Dune / Dune”, “Natural Embankment”, “Delta Lowland”, “Fan Fan Lowland”, and the like.

The safety level server 20 downloads environmental condition information for each position information stored in the external D / B 60 via the public communication line network 50 and stores it in the environmental condition diagram D / B 204B. The environmental condition diagram D / B 204B stores the downloaded environmental condition information together with position information in, for example, a shape file data format.

FIG. 4 is a diagram showing an example of the national land numerical information stored in the national land numerical information D / B 204C. As shown in FIG. 4, the national land numerical information D / B 204C stores the national land numerical information for each position information. Specific examples of the national land numerical information are, for example, “debris flow risk area”, “steep slope collapse risk point”, and the like.

The safety level server 20 downloads the environmental condition information for each position information stored in the external D / B 60 via the public communication network 50 and stores it in the national land numerical information D / B 204C. The national land numerical information D / B 204C stores the downloaded environmental condition information together with the position information in, for example, an XML data format.

FIG. 5 is a diagram showing an example of ground improvement information stored in the ground improvement D / B 204D. As shown in FIG. 5, the ground improvement D / B 204D stores ground improvement information for each position information. Specific examples of the ground improvement information include “unnecessary” and “necessary”, for example.

The ground terminal 10 is a safety level server for each position information including data related to the necessity of ground improvement, for example, as a result of a boring survey, measured data such as a depth to a foundation ground, a depth or presence of a self-settling layer, and an allowable bearing capacity 20 to send. The safety level server 20 determines whether or not ground improvement is required using separately determined ground improvement necessity determination logic, and stores the position information in the ground improvement D / B 204D in the CSV file format.

FIG. 6 is a diagram illustrating a data configuration of a natural environment table separately stored in the storage unit 204. As shown in FIG. 6, the natural environment table stores an inundation risk score, an earthquake shaking score, and a liquefaction risk score for each natural environment. In the example of each data, the natural environment is “delta lowland”, the inundation risk score is “4”, the earthquake shaking score is “4”, and the liquefaction risk score is “3”. These scores are stored as the risk increases.

FIG. 7 is a diagram showing a data configuration of a landslide disaster risk location table separately stored in the storage unit 204. As shown in FIG. 7, the sediment disaster risk location table stores risk scores according to the distance from the sediment disaster area. The sediment disaster area is, for example, a debris flow dangerous mountain stream, a debris flow risk area, a steep slope collapse risk area, a steep slope collapse risk area, a landslide risk area, an avalanche risk area, or the like.

FIG. 8 is a diagram showing a data configuration of a construction necessity score table separately stored in the storage unit 204. As shown in FIG. 8, the construction necessity score table stores a score for each ratio of points that require ground improvement within a radius of 3 km from given position information. For example, if there are 30 points that require ground improvement and 60 points that do not require ground improvement within a radius of 3 km from the given location information, the construction unnecessary ratio is 70%, so the score is “2”. "

FIG. 9 is a flowchart showing a safety level display operation performed by the server control unit 201 of the safety level server 20 and the control unit 401 of the mobile terminal 40. The portable terminal 40 is downloaded and installed in advance from the application server 30 with the safety application 304A. When the comfort level application 304 </ b> A is activated, in step 901, the control unit 401 acquires the current position by the position acquisition unit 405.

In step 902, the control unit 401 uses the orientation acquisition unit 406 to acquire the orientation in the imaging direction of the imaging unit 408.

In step 903, the control unit 401 uses the posture acquisition unit 407 to acquire the posture of the mobile terminal 40.

In step 904, the control unit 401 calculates acquisition position information. Here, the control unit 401 calculates the position information as follows.
(1) The control unit 401 sets the current position as the acquired position information when the mobile terminal 40 faces directly below.
(2) In cases other than (1), the control unit 401 acquires an inclination angle that is an angle with respect to the vertical direction of the mobile terminal 40 from the posture information. The control unit 401 obtains the distance from the current position corresponding to this angle to the intersection of the imaging direction and the ground. For example, when the tilt angle is greater than 0 ° and less than 15 ° with respect to the vertical direction, the control unit 401 sets the current position, and when the tilt angle is greater than or equal to 15 ° and less than 50 °, the control unit 401 sets 50 m to less than 50 ° and less than 90 °. In some cases, 100 m is determined as the distance. Subsequently, the control unit 401 calculates the position information of the ground ahead of the imaging direction as the main acquisition position information from the position information of the current position, the azimuth, and the distance.
(3) The control unit 401 further acquires position information of seven locations rotated 45 degrees clockwise from the main acquisition position information around the current position. And the control part 401 acquires the positional information on 50 m before and behind these positional information of a total of eight places. The total 23 pieces of position information other than the main acquisition position information are referred to as sub acquisition position information, and the main acquisition position information and the sub acquisition position information are collectively referred to as acquisition position information.

That is, the control unit 401 calculates position information of the ground in the imaging direction as acquired position information based on the position information of the current position, the posture information, and the direction. The acquired position information includes a plurality of discrete pieces of position information of points spreading on a 360 ° horizontal plane with the current position as the center.

In step 905, the control unit 401 transmits the latitude / longitude and the score transmission request command, which are the acquired position information, to the safety level server 20 via the public communication line network 50.

In step 906, the server control unit 201 of the security server 20 receives the acquisition position information and the score transmission request command from the portable terminal 40.

In step 907, the server control unit 201 acquires a score based on the received acquisition position information. Each score is obtained as follows.

(1) Inundation risk, earthquake shaking risk, liquefaction risk The server control unit 201 of the safety server 20 searches the land condition map D / B 204A based on the received position information, and reads the terrain classification information as a natural environment. When there is no data corresponding to the land condition diagram D / B 204A, the server control unit 201 searches the environmental condition diagram D / B 204B based on the received position information, and reads the environmental condition information as a natural environment.

The server control unit 201 refers to the natural environment table based on the read natural environment, and acquires each score of the inundation risk, the earthquake shaking risk, and the liquefaction risk.

(2) Earth and sand disaster risk The server control unit 201 searches the national land numerical information D / B 204C based on the received position information, reads the latest earth and sand disaster warning area or the earth and sand disaster special warning area, Calculate the distance.

The server control unit 201 refers to the landslide disaster area table based on the calculated distance and acquires the landslide disaster risk score.

(3) Ground construction score The server control unit 201 searches the ground improvement D / B 204D based on the received position information, and reads all data within 3 km from the received position information. Then, the server control unit 201 calculates the ratio of the number of points requiring ground improvement work to the number of read data as a percentage. Next, the server control unit 201 refers to the construction necessity score table based on the calculated ratio, and acquires the ground construction score.

(4) Ground Safety Level The server control unit 201 totals the acquired five types of scores, and sets the value obtained by subtracting the total value from 100 as the ground safety level.

In step 908, the server control unit 201 transmits each score and ground safety level to the mobile terminal 40 for each of the main acquisition position information and the sub acquisition position information included in the acquisition position information.

In step 909, the control unit 401 of the mobile terminal 40 receives each score from the safety level server 20 for each of the main acquisition position information and the sub acquisition position information included in the acquisition position information.

In step 910, the control unit 401 acquires an image by imaging the landscape by the imaging unit 408.

In step 911, the control unit 401 converts the ground safety level of the main acquisition position information into a pie chart, and superimposes it on a captured image together with a numerical value, and outputs it to the input / output unit 402.

FIG. 10 is a diagram showing the relationship between the “current position” and the “position ahead in the imaging direction”. As shown in FIG. 10, “current position” refers to position information immediately below the vertical direction of the mobile terminal 40, and “position ahead of the imaging direction” refers to position information of the ground in the imaging direction of the imaging unit 408 of the mobile terminal 40. Point to. However, it is assumed that the ground is horizontal.

FIG. 11 is a diagram illustrating an example of a screen displayed on the input / output unit 402 by the control unit 401 of the mobile terminal 40. As shown in FIG. 11, the control unit 401 superimposes on the captured image, and displays on the input / output unit 402 a degree of security that is a value obtained by subtracting the total score value from 100, a pie chart, and a distance. To do.

Here, when the portable terminal 40 rotates around the current position or when the tilt changes, the control unit 401 switches the main acquisition position information as follows.
(1) The control unit 401 calculates position information of the ground ahead of the imaging direction as changed position information based on the position information of the current position, the posture information, and the direction.
(2) A distance to the slave acquisition position information closest to the change position information is calculated, and if the calculated distance is equal to or less than a threshold, the change acquisition position information is set as new main acquisition position information. When the calculated distance exceeds the threshold, the control unit 401 newly acquires the main acquisition position information.
(3) The control unit 401 displays the degree of security of the new main acquisition position information, the pie chart, and the distance on the input / output unit 402.

Since it operates as described above, the control unit 401 can improve the response speed.

In the above-described embodiment, the control unit 401 outputs the safety level to the input / output unit 402, but each score may be output instead of the safety level. Moreover, if each score is set so that the numerical value becomes higher as it is safer, the total value of the scores can be simply set as the degree of security.

In this embodiment, the server control unit 201 calculates the ground safety level based on the five scores, but omits some of the above five scores and calculates the ground safety level from some scores. You may make it do.

A combination of the land condition map D / B 204A for storing terrain classification information for each position information and the environmental condition map D / B 204B for storing environment condition information for each position information, Called the environmental database.

As described above, the ground safety display system according to the present embodiment includes the natural environment database that stores the natural environment for each position information, and the national land numerical information D / B 204C that stores information related to the sediment disaster area for each position information. The soil improvement D / B 204D for storing the necessity of the ground improvement work for each position information, the natural environment database, the national land numerical information D / B 204C, and the ground improvement D / B 204D are searched based on the position information, and the inundation risk score is searched. A server 20 for calculating an earthquake shaking risk score, a liquefaction risk score, a landslide disaster risk score, and a ground construction score, and a safety level server 20, an input / output unit 402 for inputting / outputting information, A position acquisition unit 405 that acquires position information, an orientation acquisition unit 406 that acquires orientation, and an attitude acquisition unit 4 that acquires orientation information 7, the imaging unit 408 that captures an image, the current position information acquired by the position acquisition unit 405, the orientation acquired by the orientation acquisition unit, and the orientation information acquired by the orientation acquisition unit 407. The position information of the ground ahead of the direction is calculated as the acquired position information, a score related to the ground is acquired from the safety server 20 based on the acquired position information, and the ground safety calculated from this score is superimposed on the image and input / output A portable terminal 40 including a control unit 401 that outputs to the unit 402.

Therefore, there is an effect that it is possible to provide a ground safety display system that can easily provide the user with ground data at a location away from the current position.

DESCRIPTION OF SYMBOLS 10 Ground terminal 20 Safety level server 30 Application server 40 Portable terminal 50 Public communication network 60 External database 201 Server control part 202 Input / output part 203 Communication part 204 Storage part 204A Land condition map database 204B Environmental condition map database 204C National land numerical information database 204D Ground improvement database 301 Control unit 302 Input / output unit 303 Communication unit 304 Storage unit 304A Security app 401 Control unit 402 Input / output unit 403 Communication unit 404 Storage unit 405 Position acquisition unit 406 Orientation acquisition unit 407 Posture acquisition unit 408 Imaging unit

Claims

A ground improvement database that stores the necessity of ground improvement work for each location information,
A server control unit that searches the ground improvement database based on the specified position information to calculate a ground construction score, and calculates a ground safety level based on the ground construction score;
A security server with
An input / output unit for inputting / outputting information;
A position acquisition unit for acquiring current position information;
An azimuth acquisition unit for acquiring an azimuth;
A posture acquisition unit that acquires posture information;
An imaging unit that captures an image;
Position information of the ground in the imaging direction of the imaging unit based on the current position information acquired by the position acquisition unit, the orientation acquired by the orientation acquisition unit, and the posture information acquired by the posture acquisition unit Is obtained as acquisition position information, based on the acquisition position information, the ground safety level is acquired from the safety level server, and the ground safety level is output to the input / output unit,
A mobile terminal comprising:
Ground safety display system equipped with.
The controller is
The ground safety display system according to claim 1, wherein the ground safety is superimposed on the image and output to the input / output unit.
The controller is
The ground safety level display system according to claim 1, further outputting a distance from the current position information to the acquired position information to the input / output unit.
The controller is
The ground safety display system according to claim 1, wherein the ground construction score is output to the input / output unit instead of the ground safety.
The controller is
As the acquisition position information, a plurality of discrete position information of points spread on a 360 ° horizontal plane centered on the current position is acquired,
Based on the acquisition position information, the ground safety level is acquired from the security level server,
The ground safety level display system according to claim 1, wherein the ground safety level is output to the input / output unit.
The security server is
A natural environment database that stores the natural environment for each location information is further provided.
The controller is
The natural environment database is searched based on the acquired position information received from the mobile terminal to calculate at least one of a flood risk score, an earthquake shaking risk score, and a liquefaction risk score, the flood risk score, The ground safety level display system according to claim 1, wherein the ground safety level is calculated from at least one of an earthquake shaking risk score and the liquefaction risk score and the ground construction score.
The security server is
A natural environment database that stores the natural environment for each location information;
National land numerical information database for storing national land numerical information for each location information;
Further comprising
The controller is
Based on the acquired position information, the natural environment database is searched based on the acquired position information received from the mobile terminal to calculate at least one of a flood risk score, an earthquake shaking risk score, and a liquefaction risk score. The national land numerical information database is searched to calculate a sediment disaster risk score, and at least one of the inundation risk score, the earthquake shaking risk score, and the liquefaction risk score, the sediment disaster risk score, and the ground The ground safety level display system according to claim 1, wherein the ground safety level is calculated from a construction score.