JP2018106596A - Surface movement detection apparatus, wireless tag, surface movement detection method and disaster relief support system - Google Patents

Abstract

[Purpose] To provide a ground movement detection device, a wireless tag, a ground movement detection method, and a disaster rescue support system that can quickly rescue a rescue target person who has been damaged in an area where surface movement has occurred. .
[Configuration] A ground movement distribution for obtaining a ground movement distribution based on a plurality of position information pieces transmitted from a plurality of wireless tags at a first time point and a plurality of position information pieces at a second time point after the first time point. A calculation unit; and a movement position calculation unit that obtains the position at the second time point of the ground surface portion of the specified position as a movement position based on the ground movement distribution in accordance with the input of the specified position at the first time point.
[Selection] Figure 4

Description

  The present invention relates to a ground surface movement detection device, a wireless tag, a ground surface movement detection method, and a disaster rescue support system that detect ground surface movement.

  In order to detect the occurrence and scale of disasters involving ground movements such as landslides and debris flows at an early stage, an acceleration sensor and a plurality of information transmission piles that wirelessly transmit detection information and installation position information detected by the acceleration sensor, A system having a management center that collects information transmitted from the information transmission pile has been proposed (see, for example, Patent Document 1). The management center identifies an area where ground movement such as landslide or debris flow occurs by collecting the installation position information and the detection information of the acceleration sensor transmitted from each information transmission pile.

JP 2008-159036 A

  According to the above-described system, it is possible to specify a disaster area where a disaster such as a landslide or a debris flow has occurred. However, when the disaster area becomes wide, it takes a long time to search for a rescue target person who is damaged in the disaster area.

  Therefore, the present invention provides a surface movement detection device, a wireless tag, a surface movement detection method, and a disaster rescue support system that can shorten the time for searching for a rescue target person from within an area where the surface movement has occurred. Objective.

  A surface movement detection device according to the present invention is a surface movement detection device that detects surface movement based on a plurality of pieces of position information transmitted from a plurality of wireless tags, each of which obtains its own position information. A ground movement distribution calculation unit for obtaining a ground movement distribution based on the plurality of position information pieces transmitted from the wireless tag at a first time point and the plurality of position information pieces at a second time point after the first time point. And a movement position calculation unit that obtains the position at the second time point of the ground surface portion of the designated position based on the ground movement distribution in accordance with the input of the designated position at the first time point.

  The wireless tag according to the present invention is detected by the GPS receiver when a GPS (global positioning system) receiver that detects latitude and longitude, an altitude detector that detects altitude, and a wireless information request signal are received. And a wireless communication unit that wirelessly transmits position information indicating the altitude detected by the latitude and longitude and the altitude detecting unit.

  The surface movement detection method according to the present invention is a surface movement detection method for detecting a movement position based on a plurality of position information pieces wirelessly transmitted from a plurality of wireless tags each wirelessly transmitting its own position information. A first step of collecting the plurality of pieces of position information pieces at a first time point wirelessly transmitted from a plurality of wireless tags; a second step after the first time point wirelessly transmitted from the plurality of wireless tags; A second step of collecting the plurality of position information pieces at a time point; a plurality of the position information pieces at the first time point; and a ground movement distribution based on the plurality of position information pieces at the second time point. And a fourth step for obtaining a position at the second time point of the surface portion of the designated position based on the ground movement distribution in response to an input of the designated position at the first time point. Tsu has a flop, the.

  A disaster rescue support system according to the present invention includes a plurality of wireless tags that wirelessly transmit their own position information, a collection device that collects a plurality of position information pieces wirelessly transmitted from the plurality of wireless tags, and ground movement The ground movement detection device includes a plurality of location information pieces collected at the first time point and a second time after the first time point. In response to an input of a ground movement distribution calculation unit that obtains a ground movement distribution based on the plurality of pieces of position information pieces at a time point, and a designated position that designates the position of the rescue target person at the first time point, the ground surface movement And a movement position calculation unit that obtains the position of the rescue target person at the second time point based on the distribution.

  In the present invention, a plurality of pieces of position information obtained at a first time point (for example, a time point before the occurrence of a disaster) transmitted from a plurality of wireless tags, each of which obtains its own position information, and after the first time point A ground movement distribution is obtained based on a plurality of pieces of position information obtained at a second time point (for example, after a disaster occurs). And based on this ground surface movement distribution, the position at the second time point of the ground surface portion of the designated position is obtained as the movement position. Thereby, if the position of the rescue target person before the occurrence of the disaster is specified, the movement position of the rescue target person after the disaster occurrence can be known.

  Therefore, the search range for the rescue target person can be narrowed down from the entire area where the ground movement has occurred due to landslides, debris flows, etc., and the search time can be shortened.

It is a block diagram showing the outline | summary of the disaster rescue support system 100 which concerns on this invention. It is a figure which shows an example of the installation form of several radio | wireless tag TG installed in a rescue assistance object area. Is a block diagram showing the internal configuration of the wireless tag TG ₁ C. to Tg _n each. 3 is a block diagram showing an internal configuration of a ground surface movement detection apparatus 300. FIG. Is a diagram showing an example of the contents of the tag information DB1 after the wireless tag TG ₁ C. to Tg _n tag information DB0 and disaster before the disaster collected by. It is a figure which shows an example of a ground surface movement distribution display. It is a figure which shows an example of a movement position display.

FIG. 1 is a block diagram showing an outline of a disaster rescue support system 100 according to the present invention. As shown in FIG. 1, the disaster rescue support system 100 includes wireless tags TG _{1 to} TG _n (n is an integer of 2 or more), a tag information collection device 200, and a ground surface movement detection device 300.

The radio tags TG _{1 to} TG _n are the surface of an area (hereinafter referred to as a rescue support target area) that is a target of disaster rescue support by the disaster rescue support system 100, or the roof or wall of a building built in this area. Are distributed and installed. For example, as shown in FIG. 2, a plurality of wireless tags TG (shown by black circles) are installed at regular intervals on the ground surface of a convex land Cv such as a mountain or a plateau included in the rescue support target area. Further, a plurality of wireless tags TG (indicated by black circles) are installed on the surface of the roof or wall of the building Hs erected on the convex land Cv.

FIG. 3 is a block diagram illustrating an example of an internal configuration of the wireless tags TG _{1 to} TG _n . The wireless tags TG _{1 to} TG _n have the same internal configuration, and each includes a position detection unit 11, an altitude detection unit 12, and a wireless communication unit 13, as shown in FIG. The position detection unit 11, the altitude detection unit 12, and the wireless communication unit 13 are formed, for example, on a single semiconductor chip.

  The position detection unit 11 includes a GPS (global positioning system) receiver that detects its own position (latitude, longitude) using a global positioning system, and a latitude that represents the latitude and longitude detected by the GPS receiver. The longitude information PS is supplied to the wireless communication unit 13. The altitude detecting unit 12 detects the altitude at which the altitude is located and supplies altitude information AL representing the altitude to the wireless communication unit 13. When the wireless communication unit 13 receives the tag information request signal wirelessly transmitted from the tag information collection device 200, the position represented by the latitude / longitude information PS and the altitude information AL together with the identification number ID and the attribute information PT representing itself. Tag information including information is wirelessly transmitted. The attribute is information indicating whether the wireless tag is installed in the building Hs as shown in FIG. 2 or is installed on the ground surface of the convex land Cv.

That is, each of the wireless tags TG _{1 to} TG _n responds to a tag information request wirelessly transmitted from the tag information collection device 200, and has its identification number (ID) and attribute (PT), and its own position (PS, AL). Is transmitted to the tag information collection device 200.

The tag information collection device 200 is mounted on, for example, an unmanned aircraft such as a drone or a manned aircraft such as a helicopter, and wirelessly transmits the tag information request signal described above from above the rescue support target area as shown in FIG. After that, the tag information collection device 200 receives _n tag information pieces wirelessly transmitted from each of the wireless tags TG _{1 to} TG _n , and receives the received n tag information pieces and their collection dates (year, month). , Day) is supplied to the ground surface movement detection device 300.

  FIG. 4 is a block diagram illustrating an internal configuration of the ground surface movement detection apparatus 300. As shown in FIG. 4, the ground movement detection device 300 includes a control unit 30, a management memory 31, and a display device 32.

  The control unit 30 divides the collection tag information group TD supplied from the tag information collection device 200 for each collection date described above and stores it in the management memory 31.

  Further, the control unit 30 accepts input of the following designated position information INP and mode signal MOD. The designated location information INP is estimated as the location of the rescue target person before the disaster when a disaster involving surface movement such as a landslide or debris flow occurs in the rescue support target area shown in FIG. This is input information for designating the position (latitude, longitude) to be designated as the designated position. For example, when it is estimated that there is a person in the building Hs shown in FIG. 2 at the time immediately before the occurrence of the disaster, the specified position information INP indicating the position of the building Hs as the specified position is used as the ground movement detection device 300. To enter. In addition, when it is assumed that there is a mountain climber affected by the mountainous area as the convex land Cv shown in FIG. 2, the mountain climbing is performed immediately before the occurrence of the disaster based on the mountain climbing plan of the mountain climber. The designated position information INP representing the designated position is input to the ground movement detection device 300, with the position assumed to be present as a designated position. The mode signal MOD is one of a ground movement distribution display mode for displaying the ground movement distribution on the display device 32 and a movement position display mode for displaying on the display device 32 as the movement position of the rescue target after the ground movement. Is a signal for designating.

  Furthermore, the control unit 30 includes a ground surface movement distribution calculation unit 301, a movement position calculation unit 302, and a display data generation unit 303 that perform the following processing.

  Based on the collection tag information group TD stored in the management memory 31, the ground surface movement distribution calculating unit 301 calculates a ground surface movement distribution within the rescue support target area, and the ground surface movement distribution data GT representing the movement distribution of the ground surface. Is generated.

  Based on the ground surface movement distribution data GT and the designated position information INP, the movement position calculation unit 302 obtains a position (latitude, longitude, altitude) after movement of the ground surface portion of the designated position as a movement position, and movement position information representing the position. Generate a DP.

  The display data generation unit 303 generates ground movement distribution display data for displaying the distribution of the ground movement in the rescue support target area based on the ground movement distribution data GT. Further, the display data generation unit 303 generates movement position display data for displaying the position of the rescue target person based on the movement position information DP. When the display mode signal MOD indicates the ground movement distribution display mode, the display data generation unit 303 supplies the ground movement distribution display data to the display device 32, while when the display mode signal MOD indicates the movement position display mode. The moving position display data is supplied to the display device 32.

  The display device 32 performs display based on the ground surface movement distribution display data or the movement position display data supplied from the display data generation unit 303. The display device 32 is a flat display that displays an image based on the ground movement distribution display data or the movement position display data in two dimensions or three dimensions, or a three-dimensional display that projects the image three-dimensionally in space. Become.

  Below, detailed operation | movement is demonstrated along the operation | movement procedure of the disaster rescue support system 100 shown in FIG.

First, the collection tag information group TD before the disaster occurrence is acquired from the rescue support target area as shown in FIG. That is, at the time (first time) before the occurrence of the disaster, the tag information collection device 200 mounted on the aircraft or the like from each of the wireless tags TG _{1 to} TG _n from above the rescue support target area shown in FIG. The collected tag information group TD obtained by collecting the transmitted tag information is supplied to the ground surface movement detection apparatus 300. Then, the control unit 30 of the ground surface movement detection device 300 uses the information represented by the collection tag information group TD, that is, the identification number ID, the attribute information PT, and the position information (PS, AL) as the pre-disaster tag information DB0. As shown in FIG. 5, the wireless tags TG _{1 to} TG _n are stored in the management memory 31 in association with each other.

After that, if a disaster with surface movement such as landslide or debris flow occurs in the rescue target area as shown in FIG. 2, the tag information collection device mounted on the aircraft at the time after the disaster (second time point) 200 again collects tag information transmitted from each of the radio tags TG _{1 to} TG _n from above the rescue support target area, and supplies the obtained collection tag information group TD to the ground movement detection device 300. Then, the control unit 30 of the surface movement detection device 300 uses the identification number ID, the attribute information PT, and the position information (PS, AL) represented by the collection tag information group TD as post-disaster tag information DB1. As shown in FIG. 5, it is stored in the management memory 31 in association with each of the wireless tags TG _{1 to} TG _n .

The ground surface movement distribution calculating unit 301 of the control unit 30 _first installs the pre-disaster radio tags TG _{1 to} TG _n for each installation position based on the pre-disaster tag information DB 0 and the post-disaster tag information DB 1 shown in FIG. A movement vector representing the movement direction and movement distance of the ground surface from the position is calculated. For example, the pre-disaster radio tag TG ₁ installation position (latitude, longitude, altitude) represented by the pre-disaster tag information DB0 shown in FIG. 5 and the post-disaster radio tag represented by the post-disaster tag information DB1 the current position of the TG ₁ (latitude, longitude, altitude) by the movement vector of the wireless tag TG ₁ is obtained.

Then, the ground surface movement distribution calculation unit 301 calculates the ground surface movement vector over the entire area of the rescue support target area by interpolation using the movement vector calculated for each installation position before the disaster of each of the wireless tags TG _{1 to} TG _n. A ground surface movement distribution is obtained, and ground surface movement distribution data GT representing the ground surface movement distribution is generated.

  Here, in order for the management operator who performs rescue support to specify the movement position of the rescue target person, the designated position information INP indicating the position where the rescue target person is estimated to exist before the disaster occurs is moved to the ground. Input to the detection device 300. Then, the movement position calculation unit 302 of the ground surface movement detection device 300 first extracts the movement vector of the designated position indicated by the designated position information INP from the ground movement distribution data GT. Then, the movement position calculation unit 302 obtains a position separated from the designated position by the movement distance indicated by the movement vector in the movement direction indicated by the extracted movement vector as the movement position where the rescue target person exists. Then, the movement position information DP representing the movement position is generated.

  The display data generation unit 303 adds a mark that visually represents a movement vector of the ground indicated by the above-described ground movement distribution data GT to an image that schematically represents the topography of the rescue support target area. The surface movement distribution display data for displaying is generated. For example, as shown in FIG. 6, the display data generation unit 303 includes a ground surface in which, for example, an arrow mark YJ that visually represents a movement vector of the ground surface is added to the image representing the topography of the rescue support target area (Cv, Hs). Surface movement distribution display data for displaying a movement distribution image is generated. The display data generation unit 303 determines which of the movements of the building Hs and the convex surface Cv each arrow mark YJ represents based on the attribute information PT included in the pre-disaster tag information DB0. The display color of the arrow mark YJ (indicated by a broken line) representing the movement of the building Hs and the arrow mark YJ (indicated by a solid line) representing the movement of the convex ground Cv on the ground surface may be different. good.

  Further, the display data generation unit 303 includes a circular shape, an elliptical shape, or a multipoint shape centered on the movement position (latitude, longitude, altitude) represented by the movement position information DP in the image representing the topography of the rescue support target area. Movement position display data including an image representing a square area as an existing area is generated.

  For example, as shown in FIG. 7, the display data generation unit 303 includes a designated position IP, a moving position PP, and between the designated position IP and the moving position PP in an image representing the topography of the rescue support target area (Cv, Hs). The movement mark display data representing the arrow mark YJ representing the movement locus and the existence area QP is generated. The existence area QP is an area that includes the movement position PP and is predicted that the existence probability of the rescue target person is higher than a predetermined rate based on the ground movement distribution data GT. As shown in FIG. 7, the display data generation unit 303 generates movement position display data in which character information indicating the latitude, longitude, and altitude of the movement position PP is attached in the vicinity of the existence area QP. Also good.

  Here, when the management operator inputs a display mode signal MOD indicating the ground movement distribution display mode, the display data generation unit 303 supplies the above-described ground movement distribution display data to the display device 32. At this time, the display device 32 displays a ground surface movement distribution as shown in FIG.

  According to the surface movement distribution display, the management operator can confirm the state of the surface movement due to landslide, debris flow, and the like, and the state of collapse of the building (Hs).

  On the other hand, when the display mode signal MOD input by the management operator indicates the movement position display mode, the display data generation unit 303 supplies the movement position display data described above to the display device 32. At this time, as shown in FIG. 7, the display device 32 includes a moving position PP in which the rescue target person is estimated to exist in the rescue support target area, and there is a high possibility that the rescue target person exists. The moving position indicating is displayed.

  Therefore, according to the movement position display, the management operator can issue an instruction to the rescue team to set the existence area QP in consideration of the movement of the ground surface due to landslide, debris flow, or the like as the investigation range. Therefore, according to the present invention, the search range of the rescue target person can be narrowed down from the entire area where the ground movement has occurred due to landslides, debris flows, etc., so that the search time can be shortened.

In the above-described embodiment, each of the wireless tags TG _{1 to} TG _n responds to a tag information request from the tag information collection device 200, and has its identification number (ID) and attribute (PT), and its current position. Although the tag information representing (PS, AL) is wirelessly transmitted, the tag information may be wirelessly transmitted autonomously at predetermined intervals. In addition, when wirelessly transmitting tag information, the wireless tags TG _{1 to} TG _n perform wireless transmission of tag information one by one, or wirelessly transmit tag information simultaneously at different carrier frequencies. As a result, the tag information collecting apparatus 200 can collect and collect the wirelessly transmitted tag information for each of the wireless tags TG _{1 to} TG _n .

Each of the wireless tags TG _{1 to} TG _n may wirelessly transmit only its own position information (PS, AL).

In short, a ground surface movement detection device (300) for detecting ground surface movement based on a plurality of position information pieces (PS, AL) transmitted from a plurality of wireless tags (TG _{1 to} TG _n ) each obtaining their own position information. As long as it includes the following ground surface movement distribution calculating unit and moving position calculating unit. That is, the ground surface movement distribution calculation unit (301) transmits a plurality of position information pieces transmitted from a plurality of wireless tags at a first time point (for example, a time point before the ground surface movement occurs), and the first time point after the first time point. A ground movement distribution (GT) is obtained based on a plurality of pieces of position information pieces at a time point 2 (for example, a time point after the ground movement). Then, the movement position calculation unit (302) determines the position at the second time point of the ground portion of the designated position based on the ground movement distribution in accordance with the input of the designated position (IP) at the first time point. Asking.

The surface movement detection device 300 may be configured by hardware, but may be realized by a tablet-type terminal device such as a personal computer or a smartphone. At this time, the operations of the ground surface movement distribution calculation unit 301 and the movement position calculation unit 302 of the ground surface movement detection device 300 are realized by software according to the following ground surface movement detection method. That is, in detecting a moving position based on a plurality of position information pieces wirelessly transmitted from a plurality of wireless tags (TG _{1 to} TG _n ) that wirelessly transmit their own position information, the following first to fourth The above terminal device is operated by software having steps. First, a plurality of position information pieces wirelessly transmitted from a plurality of wireless tags at a first time point (for example, a time point before the ground movement occurs) are collected (first step). Further, a plurality of pieces of position information pieces at a second time point (for example, a time point after the ground movement occurs) wirelessly transmitted from the plurality of wireless tags are collected (second step). Then, a ground movement distribution is obtained based on the plurality of position information pieces at the first time point and the plurality of position information pieces at the second time point (third step), and the designated position (IP) at the first time point. , The position (PP) at the second time point of the ground surface portion of the designated position is obtained based on the ground movement distribution (GT) (fourth step).

100 Disaster Rescue Support System 200 Tag Information Collection Device 300 Ground Surface Movement Detection Device 301 Ground Surface Movement Distribution Calculation Unit 302 Movement Position Calculation Unit 303 Display Data Generation Units TG _{1 to} TG _n Radio Tags

Claims (10)

A ground movement detection device that detects ground movement based on a plurality of pieces of position information transmitted from a plurality of wireless tags, each of which obtains its own position information,
Surface movement for obtaining a ground movement distribution based on the plurality of position information pieces at a first time point transmitted from the plurality of wireless tags and the plurality of position information pieces at a second time point after the first time point. A distribution calculator;
A movement position calculation unit that obtains, as a movement position, a position at the second time point of the surface portion of the designated position based on the ground movement distribution in response to an input of the designated position at the first time point. A ground movement detection device.   The ground movement detection apparatus according to claim 1, further comprising a display data generation unit that generates display data for displaying the movement position.   The ground movement detection apparatus according to claim 1, wherein the plurality of wireless tags are installed on a ground surface in a predetermined area, or a wall or roof of a building erected in the predetermined area. A collection device that collects the plurality of pieces of position information transmitted from the plurality of wireless tags;
The collection device wirelessly transmits an information request signal to the plurality of wireless tags from above the predetermined area,
The ground movement detection device according to claim 3, wherein each of the plurality of wireless tags wirelessly transmits the position information when the information request signal is received. The wireless tag is
A GPS (global positioning system) receiver that detects the latitude and longitude where it is located;
An altitude detector for detecting altitude,
Information indicating the latitude and longitude detected by the GPS receiver and the altitude detected by the altitude detecting unit is the position information, and the position information is wirelessly transmitted in response to reception of the information request signal The ground movement detection device according to claim 4, further comprising a communication unit.   The display data generation unit displays the movement position, the designated position, a movement locus between the designated position and the movement position, an area including the movement position, and a latitude / longitude and an altitude of the movement position. The ground surface movement detection apparatus according to claim 2, wherein the display data is generated as the display data.   The ground movement detection apparatus according to claim 2, further comprising a display device that displays a two-dimensional or three-dimensional image corresponding to the display data. A GPS (global positioning system) receiver that detects latitude and longitude;
An altitude detector for detecting altitude,
A wireless communication unit that wirelessly transmits position information indicating the altitude detected by the latitude and longitude detected by the GPS receiver and the altitude detecting unit when a radio information request signal is received. A wireless tag characterized by A surface movement detection method for detecting a movement position based on a plurality of position information pieces wirelessly transmitted from a plurality of wireless tags each wirelessly transmitting its own position information,
A first step of collecting the plurality of pieces of position information pieces at a first time point wirelessly transmitted from the plurality of wireless tags;
A second step of collecting the plurality of pieces of position information pieces wirelessly transmitted from the plurality of wireless tags at a second time after the first time;
A third step of obtaining a ground movement distribution based on the plurality of position information pieces at the first time point and the plurality of position information pieces at the second time point;
And a fourth step of determining a position at the second time point of the ground surface portion of the designated position based on the ground movement distribution in response to an input of the designated position at the first time point. Movement detection method. A plurality of wireless tags each transmitting wirelessly their own location information;
A collection device for collecting a plurality of pieces of position information wirelessly transmitted from the plurality of wireless tags;
A disaster relief support system including a ground movement detection device,
The surface movement detection device is:
Surface movement distribution calculation for obtaining a ground movement distribution based on the plurality of position information pieces collected at the first time point and the plurality of position information pieces at a second time point after the first time point collected by the collecting device. And
A movement position calculation unit for obtaining a position of the rescue target person at the second time point based on the ground movement distribution in response to an input of a designated position for designating a position of the rescue target person at the first time point; Disaster relief support system characterized by including.

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