JP6550579B1 - Disaster escape route guidance system - Google Patents

Abstract

[PROBLEMS] To accurately estimate a route for a plurality of people who want to escape from a building in a disaster to escape safely. Upon receiving a signal from any transmitter, each communication terminal of each person who wants to leave transmits the transmitter ID to a management server. The management server receives a transmitter ID from each communication terminal, stores the received transmitter ID in a memory in association with a reception time, and sends a plurality of outgoing calls stored in the memory for each person who wants to leave. The time history of the machine ID is converted into a time history of a plurality of spatial coordinate values representing the installation positions of a plurality of transmitters corresponding thereto, and each escape from the time history of the plurality of spatial coordinate values is converted for each person who wants to escape. Estimate the evacuation routes A, B, and C of the applicant, and among the multiple evacuation routes estimated to have been used individually by multiple people who want to escape, those who wish to escape Estimated as a successful escape route used in common. [Selection] Figure 13

Description

  The present invention relates to a technology for analyzing a traveling route or crowd of people in a closed space such as a building, and more particularly to a technology for guiding a route for a plurality of escape applicants to escape safely from a building at the time of disaster. .

  Several techniques have already been proposed to analyze travel routes of multiple people in a closed space such as a building, and one example is an example of a person who wants to escape from a building (eg, a building, a tunnel, an underground mall, etc.) Is a technology that guides the route to escape safely.

  As a technique for guiding an evacuation route during a disaster, for example, Patent Document 1 discloses an evacuation route map creation system. In this system, an evacuation applicant carries a portable terminal, which measures its current position by GPS and transmits it to the center device. In this system, when a disaster occurs, the evacuation route which can be passed is identified with certainty based on the information of the route actually passed by the evacuation applicant.

  Patent Document 2 discloses an evacuation route guidance system. In this system, transceivers are installed at a plurality of locations on the evacuation route. The server transmits evacuation route information to each transceiver at the time of a disaster. This server calculates the evacuation route according to the current position of the mobile terminal of the refugee. The evacuee's mobile terminal receives evacuation route information from each transceiver.

  Patent Document 3 discloses a method of detecting the position of a fireman. According to this method, an antenna is installed on each floor of the building. A fireman carries a transmitter. The position of the fireman is detected from the radio wave received by the antenna from the transmitter.

  Patent Document 4 discloses a position specifying system for specifying the position of a resident (rescuers and rescue workers) in a building having multiple floors. In this system, a plurality of transmitters are installed in a room, and a resident has a portable terminal. Each transmitter emits a signal, which the mobile terminal receives. The portable terminal returns the signal to the transmitter that has received the signal. When the transmitter receives the signal, it sends its ID to the server.

  Patent Document 5 discloses a position information acquisition system as a technology for analyzing a moving route to an attendee and analyzing an object of interest of the attendee in a closed space such as an exhibition room or a store, not for evacuation support. It is disclosed.

  In this system, the visitor carries a portable terminal. A plurality of radio wave transmitters are installed in buildings such as exhibition rooms and stores, and the mobile terminal receives radio wave information (position information) from each radio wave transmitter and generates direction information on the mobile terminal itself. The portable terminal transmits the position information and the direction information to the management server at predetermined time intervals. The management server calculates the movement trajectory of each mobile terminal from the received information, calculates the staying time at each point in the movement trajectory, and detects the orientation of the mobile terminal at each point.

JP 2011-95850 A JP 2007-11830 A JP 2005-55186 A Japanese Patent No. 6321134 JP, 2015-152483, A

  At the time of a disaster, a plurality of transmitters installed in a building (this term is used as a synonym for a structure in the sense that it includes a structure such as a tunnel throughout the present document) and its building With the escape requester's portable terminal that wants escape or evacuation, it is possible to detect the actual moving route or evacuation route in the building.

  And if the evacuation route detected in this way is guided to the other escape applicants who are about to escape from the same building, the escape applicant is more reliable than when it can not rely on any information It is expected to escape from the building.

  However, at the time of disaster, there are multiple evacuation routes for the same building. For example, in a multi-storey building, when an exit applicant walks down from the upper floor to the lower floor, which stairs (such as indoor stairs or emergency stairs) are used or which passage is used From the point of view, there are potentially multiple evacuation routes.

  However, the evacuation route that is actually used may differ depending on the evacuation start position because the positions where escape applicants start evacuation (for example, the floor number of the floor) are different from each other, that is, position dependent Sex exists.

  Furthermore, since the damage situation and the damaged part of the building gradually change at the time of a disaster, it cannot be denied that the evacuation route that was safe one minute ago may be changed to a dangerous evacuation route one minute later. That is, the evacuation route also has time dependency.

  Furthermore, when there is an evacuation route used by the first escape applicant, there is a possibility that the utilization is achieved because it is because the escape applicant was allowed to leave. In other words, the evacuation route has user dependency.

  Therefore, the evacuation route actually used by one escape applicant is not necessarily safe for another escape applicant and escape from the same building at another place and at another timing. Absent.

  Therefore, a real safe evacuation route is estimated in real time for each evacuation start position (for example, for each floor) and for each moment, and the evacuation information is used as the evacuation information. It is desirable to provide it to those who wish to escape.

  In addition, the evacuation route should be guided to other evacuation candidates with high reliability only when there is a fact that multiple evacuation applicants used the same evacuation route at the same time. it is conceivable that.

  With the above-described knowledge as a background, the present invention has been made as an object to provide a technique for accurately estimating a route for a plurality of people who want to escape safely from a building during a disaster.

In order to solve the problem , according to an aspect of the present invention, a system for guiding a route for a plurality of people who want to escape safely from a building during a disaster,
A plurality of transmitters discretely installed in the building, each transmitter transmitting an identification signal representing a unique transmitter ID;
A plurality of communication terminals carried by a plurality of escape applicants, each capable of receiving an identification signal from each transmitter by the near field communication method;
A management server capable of communicating with the plurality of communication terminals
Including
Upon receiving a signal from one of the transmitters, the communication terminal of each person who wants to leave, the transmitter ID represented by the signal, and the terminal / user ID that is the identification information of the communication terminal or the identification information of the user, A transmitting unit for transmitting to the management server,
The management server is
A receiver that receives the transmitter ID and the terminal / user ID from each communication terminal;
A storage unit that associates the received transmitter ID with the transmission time when each communication terminal transmits to the management server or the reception time when the management server receives from each communication terminal, and the terminal / user ID in the memory When,
According to a predetermined relationship between the transmitter ID and the space coordinate value stored in the memory, the time of a plurality of transmitter IDs stored in the memory for each person who wants to escape The history is converted into a time history of a plurality of spatial coordinate values representing the installation positions of a plurality of corresponding transmitters, and for each escape applicant, each escape requester is extracted from the time history of the plurality of spatial coordinate values. An evacuation route estimation unit for estimating the evacuation route actually used;
Of the plurality of transmitters installed at a position near the exit of the building, it is determined whether or not each communication terminal has received a transmitter ID, whereby the evacuation route estimation unit desires for escape from a plurality of people. Out of a plurality of evacuation routes estimated to have been used individually by each person, a plurality of evacuation routes used by a plurality of escape successful persons who successfully escaped from the exit of the building are regarded as a plurality of escape success evacuation routes A segment that is common to each other among the selected successful escape routes is estimated as a successful escape route commonly used by the plurality of successful escapers among the plurality of escapeable applicants and not among the plurality of escapeable candidates. With escape route estimation unit
Including
Each space coordinate value is three-dimensionally defined in a three-dimensional orthogonal coordinate system fixed to the building,
The evacuation route estimation unit includes a movement vector in which a plurality of movement vectors are arranged in a line in a three-dimensional orthogonal coordinate system fixed to the building, for each escape applicant, the time history of the plurality of spatial coordinate values. Convert it into a column, define the evacuation route as its movement vector sequence,
The successful escape route estimation unit converts each movement vector sequence into a group of a plurality of dots in a three-dimensional orthogonal coordinate system fixed to the building, and among the dots, the plurality of people who want to escape are converted. A plurality of movement vector sequences that substantially coincide with each other are extracted, and the extracted dots are converted into one straight line segment or one straight line segment composed of a plurality of straight line segments connected in series with each other. Convert to a column and define the successful exit route as one straight segment or one straight segment column,
A disaster escape route guidance system is provided for guiding the estimated successful escape route to other escape applicants in the same building.
Further , according to an aspect of the present invention, there is provided a system for guiding a route for a plurality of escape applicants to safely escape from a building at the time of a disaster,
A plurality of transmitters discretely installed in the building, each transmitter transmitting an identification signal representing a unique transmitter ID;
A plurality of communication terminals carried by a plurality of escape applicants, each capable of receiving an identification signal from each transmitter by the near field communication method;
A management server capable of communicating with the plurality of communication terminals,
Upon receiving a signal from one of the transmitters, the communication terminal of each person who wants to leave, the transmitter ID represented by the signal, and the terminal / user ID that is the identification information of the communication terminal or the identification information of the user, A transmitting unit for transmitting to the management server,
The management server
A receiver that receives the transmitter ID and the terminal / user ID from each communication terminal;
A storage unit that associates the received transmitter ID with the transmission time when each communication terminal transmits to the management server or the reception time when the management server receives from each communication terminal, and the terminal / user ID in the memory When,
According to the predetermined relationship between the transmitter ID and the space coordinate value, which is stored in the memory, the time of the plurality of transmitter IDs stored in the memory for each person who wants to leave The history is converted into a time history of a plurality of spatial coordinate values representing the installation positions of a plurality of corresponding transmitters, and for each escape applicant, each escape requester is extracted from the time history of the plurality of spatial coordinate values. An evacuation route estimation unit for estimating the evacuation route actually used;
Of the plurality of transmitters installed at a position near the exit of the building, it is determined whether or not each communication terminal has received a transmitter ID, whereby the evacuation route estimation unit desires for escape from a plurality of people. Out of a plurality of evacuation routes estimated to have been used individually by each person, a plurality of evacuation routes used by a plurality of escape successful persons who successfully escaped from the exit of the building are regarded as a plurality of escape success evacuation routes A segment that is common to each other among the selected successful escape routes is estimated as a successful escape route commonly used by the plurality of successful escapers among the plurality of escapeable applicants and not among the plurality of escapeable candidates. Including an escape route estimation unit and
A disaster escape route guidance system is provided which guides the estimated successful escape route to other escape applicants in the same building.
The following aspects are obtained by the present invention. Each aspect is divided into sections, each section is given a number, and is described in a form in which the numbers of other sections are cited as necessary. This is to facilitate understanding of some of the technical features that the present invention can employ and combinations thereof, and the technical features that can be employed by the present invention and combinations thereof are limited to the following embodiments. It should not be interpreted as That is, it should be understood that the technical features described in the present specification, which are not described in the following embodiments, can be appropriately extracted and adopted as the technical features of the present invention.

  Further, describing each section in the form of quoting the numbers of the other sections does not necessarily prevent the technical features described in each section from being separated from the technical features described in the other sections. It should not be construed as meaning, but it should be construed that the technical features described in each section can be appropriately made independent depending on the nature.

(1) A system for guiding a route for a plurality of escape applicants to escape safely from a building at the time of disaster,
A plurality of transmitters discretely installed in the building, each transmitter transmitting an identification signal representing a unique transmitter ID;
A plurality of communication terminals carried by a plurality of escape applicants, each capable of receiving an identification signal from each transmitter by the near field communication method;
A management server capable of communicating with the plurality of communication terminals,
When each communication terminal of the person desiring to leave receives a signal from any of the transmitters, the transmitter ID represented by the signal, the identification information of the communication terminal or the terminal / user ID which is the identification information of the user A transmitting unit for transmitting to the management server,
The management server
A receiver that receives the transmitter ID and the terminal / user ID from each communication terminal;
A storage unit that associates the received transmitter ID with the transmission time when each communication terminal transmits to the management server or the reception time when the management server receives from each communication terminal, and the terminal / user ID in the memory When,
According to a predetermined relationship between the transmitter ID and the space coordinate value stored in the memory, the time of a plurality of transmitter IDs stored in the memory for each person who wants to escape The history is converted into a time history of a plurality of spatial coordinate values representing the installation positions of a plurality of corresponding transmitters, and for each escape applicant, each escape requester is extracted from the time history of the plurality of spatial coordinate values. An evacuation route estimation unit for estimating the evacuation route actually used;
Among the plurality of evacuation routes estimated to have been used individually by a plurality of escape applicants, a successful exit route in which portions common to each other in place are estimated as successful escape routes commonly used by the escape applicants. Disaster escape route guidance system including an estimation unit and.

(2) The management server further
The estimated successful escape route is distributed to a plurality of communication terminals of other multiple escape applicants, thereby successfully sharing evacuation guidance information based on the successful escape route among the multiple escape applicants. The disaster escape route guidance system according to item (1), including an escape route distribution unit.

(3) The evacuation route estimation unit includes a disaster determination unit that determines whether a disaster has occurred in the building,
The evacuation route estimation unit is activated when the disaster determination unit determines that a disaster has occurred.
The successful escape route estimation unit includes an escape determination unit that determines which escape candidate has succeeded in leaving the building,
The successful escape route estimation unit is estimated to be used by a plurality of escape applicants determined by the escape determination unit as having escaped from the building among the plurality of evacuation routes estimated. The disaster escape route guidance system according to (1) or (2), wherein the successful escape route is selected from the plurality of selected evacuation routes.

(4) The disaster escape route guidance system according to (3), wherein the disaster judgment unit interlocks with a fire alarm installed in the building or a disaster monitoring system existing outside the building.

(5) When the escape determination unit receives transmitter IDs of the plurality of transmitters that are installed in the vicinity of the exit of the building or outside the building from the communication terminal of each person who wants to escape The disaster escape route guidance system according to (3) or (4), wherein it is determined that each escape applicant has succeeded in escape from the building.

(6) The building has a plurality of floors,
The disaster escape route guidance according to any one of the items (1) to (5), wherein the successful escape route estimation unit estimates the successful escape route for each floor of the building and sequentially and repeatedly in real time. system.

(7) Further, for each person who wants to escape, the success is obtained from a time difference between a plurality of transmission times or reception times stored in the memory in association with a plurality of transmitters corresponding to the estimated success exit route. An escape difficulty estimation unit that calculates the movement speed of each person who wants to escape along the escape route, and estimates the degree of difficulty in escaping from the building using the successful escape route based on the calculated movement speed A disaster escape route guidance system according to any one of (1) to (6).

(8) A program for causing a computer to function as the communication terminal according to any one of (1) to (7).

  Throughout this specification, the term “program” is interpreted to mean, for example, a combination of instructions executed by a computer to perform its function, It can be interpreted to include files and data processed according to, but not limited to.

  In addition, this program is intended to achieve its intended purpose by being executed alone by a computer, or to be achieved by being executed by a computer together with other programs. Yes, but not limited to them. In the latter case, the program according to the present section may be data-based but is not limited thereto.

(9) A program for causing a computer to function as the management server according to any one of (1) to (7).

(10) A recording medium on which the program according to (8) or (9) is recorded so as to be readable by a computer.

  Throughout this specification, the term “recording medium” can be construed to mean various types of recording media, such as a magnetic recording medium such as a flexible disk. The medium includes an optical recording medium such as a CD and a CD-ROM, a magneto-optical recording medium such as an MO, and an unremovable storage such as a ROM, but not limited thereto.

(11) A system for analyzing a movement route of a plurality of persons in a closed space,
A plurality of transmitters discretely installed in the closed space, each transmitter transmitting a signal representing a unique transmitter ID;
A plurality of communication terminals carried by a plurality of users, each capable of receiving signals from each transmitter by a near field communication method;
A management server capable of communicating with the plurality of communication terminals,
When the communication terminal of each user receives a signal from any transmitter, the transmitter ID represented by the signal and the terminal / user ID that is the identification information of the communication terminal or the identification information of the user are Including a transmitter to transmit to the management server,
The management server
A receiver that receives the transmitter ID and the terminal / user ID from each communication terminal;
A storage unit that associates the received transmitter ID with the transmission time when each communication terminal transmits to the management server or the reception time when the management server receives from each communication terminal, and the terminal / user ID in the memory When,
According to the predetermined relationship between the transmitter ID and the space coordinate value stored in the memory, the time history of a plurality of transmitter IDs stored in the memory is stored for each user. The travel route actually converted by each user from the time history of the plurality of spatial coordinate values is converted into the time history of the plurality of spatial coordinate values representing the installation positions of the plurality of transmitters corresponding thereto. A moving route estimation unit that estimates
Of the plurality of travel routes estimated to be individually used by the plurality of users, a portion common to each other is extracted, and the plurality of routes are located at the same position as the extracted portion or in the vicinity thereof. And a target of interest estimation unit that estimates that there is a target of interest that is commonly indicated by human users.

  Here, as the “closed space”, there are, for example, a store where a plurality of products are displayed, an exhibition room where a plurality of works are displayed, a museum, a museum, and the like.

(12) A system for analyzing a movement route of a plurality of persons in a closed space,
A plurality of transmitters discretely installed in the closed space, each transmitter transmitting a signal representing a unique transmitter ID;
A plurality of communication terminals carried by a plurality of users, each capable of receiving signals from each transmitter by a near field communication method;
A management server capable of communicating with the plurality of communication terminals;
When the communication terminal of each user receives a signal from any transmitter, the transmitter ID represented by the signal and the terminal / user ID that is the identification information of the communication terminal or the identification information of the user are Including a transmitter to transmit to the management server,
The management server
A receiver that receives the transmitter ID and the terminal / user ID from each communication terminal;
A storage unit that associates the received transmitter ID with the transmission time when each communication terminal transmits to the management server or the reception time when the management server receives from each communication terminal, and the terminal / user ID in the memory When,
According to the predetermined relationship between the transmitter ID and the space coordinate value stored in the memory, the time history of a plurality of transmitter IDs stored in the memory is stored for each user. The travel route actually converted by each user from the time history of the plurality of spatial coordinate values is converted into the time history of the plurality of spatial coordinate values representing the installation positions of the plurality of transmitters corresponding thereto. A moving route estimation unit that estimates
From the time difference between the plurality of transmission times or reception times stored in the memory in association with the plurality of transmitter IDs corresponding to the estimated travel route for each user, the travel route of the user among the travel routes And a bottleneck extraction unit that extracts a portion where the movement speed is lower than a reference value as a bottleneck.

  Here, as the “closed space”, for example, a store in which a plurality of products are displayed, an exhibition room in which a plurality of works are displayed, a museum, a museum, or a plurality There are business entities (for example, a company, a factory, a hospital, a government office, a production site, etc.) in which departments exist discretely in space.

(13) A method of guiding a route for a plurality of escape applicants to escape safely from a building at the time of disaster,
The method is
A plurality of transmitters discretely installed in the building, each transmitter transmitting an identification signal representing a unique transmitter ID;
A plurality of communication terminals carried by a plurality of escape applicants, each capable of receiving an identification signal from each transmitter by the near field communication method;
Executed using a management server capable of communicating with the plurality of communication terminals,
The method is
When the communication terminal of each escape applicant receives a signal from one of the transmitters, the transmitter ID represented by the signal and the terminal / user ID which is the identification information of the communication terminal or the identification information of the user, Sending to the management server;
A receiving step in which the management server receives the transmitter ID and the terminal / user ID from each communication terminal;
The management server associates the received transmitter ID with the transmission time when each communication terminal transmits to the management server or the reception time when the management server receives from each communication terminal, and the terminal / user ID. Preservation process to be stored in
The management server has a predetermined relationship between a transmitter ID and a space coordinate value and is stored in the memory according to a predetermined relationship between the transmitter ID and a space coordinate value. The time history of the transmitter ID is converted into a time history of a plurality of space coordinate values representing the installation positions of a plurality of corresponding transmitters, and for each of the exit applicants, from the time history of the plurality of space coordinate values, An evacuation route estimation process for estimating an evacuation route actually used by each person who wants to escape;
Of the plurality of evacuation routes estimated by the management server to be individually used by a plurality of evacuation applicants, a portion common to each other as a successful escape route commonly used by those evacuation applicants A disaster escape route guidance method including the step of estimating a successful escape route to be estimated.

(14) A method for analyzing a movement route of a plurality of persons in a closed space,
The method is
A plurality of transmitters discretely installed in the closed space, each transmitter transmitting a signal representing a unique transmitter ID;
A plurality of communication terminals carried by a plurality of users, each capable of receiving signals from each transmitter by a near field communication method;
Executed using a management server capable of communicating with the plurality of communication terminals,
In this method, when each user's communication terminal receives a signal from one of the transmitters, the transmitter ID represented by the signal and the terminal / user that is the identification information of the communication terminal or the identification information of the user Sending an ID to the management server;
A receiving step in which the management server receives the transmitter ID and the terminal / user ID from each communication terminal;
The management server associates the received transmitter ID with the transmission time when each communication terminal transmits to the management server or the reception time when the management server receives from each communication terminal, and the terminal / user ID. Preservation process to be stored in
A plurality of transmitters stored in the memory for each user according to the management server according to a predetermined relationship between the transmitter ID and the spatial coordinate values stored in the memory The time history of the ID is converted into a time history of a plurality of spatial coordinate values representing the installation positions of a plurality of transmitters corresponding to the ID, and for each user, the user actually uses the time history of the plurality of spatial coordinate values. A travel route estimation step for estimating the travel route used for
The management server extracts a part of the plurality of travel routes estimated to be individually used by the plurality of users, and extracts a part common to each other, and the same position as the extracted part or its vicinity An object of interest estimation step of estimating that there is an object of interest commonly indicated by the plurality of users at a position.

FIG. 1 is an overall system diagram illustrating a disaster escape route guidance system according to an exemplary embodiment of the present invention. 2 (a) is a partially transparent perspective view showing the building shown in FIG. 1, and FIG. 2 (b) shows two entrances and two stairs in the building shown in FIG. 2 (a). It is a top view which takes out and shows a 2nd floor. FIG. 3 is a partial perspective view showing a room in the building shown in FIG. 1 with a plurality of transmitters installed on the vertical wall thereof. FIG. 4 is a functional block diagram showing each transmitter shown in FIG. FIG. 5 is a functional block diagram showing each mobile terminal shown in FIG. FIG. 6 is a flow chart conceptually showing a transmitter ID transmission program executed by the computer of the portable terminal shown in FIG. FIGS. 7A to 7F are conceptual diagrams showing a plurality of types of reception areas in order to explain a portion of the transmitter ID program shown in FIG. 6 that processes a signal received from the transmitter. It is a time chart for demonstrating a signal processing algorithm. FIG. 8 is a functional block diagram showing the management server shown in FIG. FIG. 9 is another functional block diagram showing the management server shown in FIG. 1, and particularly shows the software configuration of the management server. FIG. 10 is a diagram conceptually representing the relationship (conversion table) between the transmitter ID, the space coordinate value, and the floor number stored in advance in the memory of the management server shown in FIG. 9 in a tabular form. FIG. 11A is a diagram conceptually showing an example of a time history of a plurality of reception points temporarily stored in the memory of the management server shown in FIG. 9, and FIG. FIG. 12 is a diagram conceptually illustrating an example of a time history of a plurality of movement vectors converted from a time history of a plurality of reception points illustrated in FIG. Fig.12 (a) is a conceptual diagram showing the time history of the some receiving point shown to Fig.11 (a) as a receiving point sequence in three-dimensional space, and FIG.12 (b) is FIG.11 (b). It is a conceptual diagram showing the time history of a plurality of movement vectors shown as a movement vector sequence on a three-dimensional space. FIG. 13A is a diagram expressing three movement vector sequences acquired for the same building on the xy plane, and FIG. 13B is a diagram illustrating three movement vector sequences shown in FIG. FIG. 13C is a diagram representing the succeeding escape route of the subsequent evacuation phase 2 on the xy plane. FIG. 13C is a diagram representing the succeeding escape route of the subsequent evacuation phase 2 on the xy plane. It is. FIG. 14A conceptually shows the relationship (evacuation guidance information) between the successful escape route and the difficulty of escape stored temporarily for each floor in the memory of the management server shown in FIG. 9 in the evacuation phase 1. FIG. 14B is a diagram conceptually showing the relationship (evacuation guidance information) in the evacuation phase 2 in a tabular format. FIG. 15 is a flowchart conceptually showing a reception processing program executed by the computer of the management server shown in FIG. FIG. 16 is a flowchart conceptually showing an evacuation route estimation program executed by the computer of the management server shown in FIG. FIG. 17 is a flowchart conceptually showing a successful escape route estimation program executed by the computer of the management server shown in FIG. FIG. 18 is a flow chart conceptually showing an escape difficulty level estimation program executed by the computer of the management server shown in FIG. FIG. 19 is a flowchart conceptually showing a transmission processing program executed by the computer of the management server shown in FIG.

  Hereinafter, one of more specific exemplary embodiments of the present invention will be described in detail based on the drawings.

  A disaster escape route guidance system (hereinafter simply referred to as "system") 10 according to an embodiment of the present invention is shown in FIG. 1 as a whole system diagram. The system 10 relates to a technique for analyzing a traveling route or a crowd flow of a plurality of people in a closed space, specifically, guiding a route for a plurality of escape applicants to safely escape from the building 12 at the time of disaster. It relates to technology.

<About the overall system configuration>

  Schematically, as shown in FIG. 1, this system 10 includes a plurality of transmitters 30 installed in a space 12 in a building 12 and a plurality of portable terminals carried by a plurality of people who want to escape. (An example of the “communication terminal”) 90 and a management server 50 which is operated and managed by a management center 40 located at a remote place and which can communicate with a plurality of portable terminals 90.

  The plurality of transmitters 30 and the plurality of portable terminals 90 are connected in one direction by a short-range wireless communication method, whereas the plurality of portable terminals 90 and the management server 50 are connected via a global network such as the Internet. It is connected bidirectionally by a long-distance wireless communication system.

About the building

  As shown to Fig.2 (a), an example of the building 12 is two stories. As shown in FIG. 2B, the first floor portion 13 of the building 20 includes a first entrance 14 and a second entrance 15, and a first step 16 and a second step 17. In the second floor portion 20 of the building 20, there are four rooms 21, 22, 23, 24 and a first hallway 25 and a second hallway 26.

  Further, as shown in FIG. 2B, fire alarms 28 are installed at a plurality of locations in the building 12, and a disaster monitoring system 29 is installed outside the building 12. The fire alarm 28 detects a fire in the building 12, while the disaster monitoring system 29 detects a fire outside the building 12 (for example, a fire in an outer wall, a yard, a neighbor, etc.).

  As shown in FIG. 1, a plurality of transmitters 30 are installed in the building 12. As illustrated in FIG. 3, a plurality of transmitters 30 are spatially discretely installed on a vertical wall of a room (for example, room 22) in the building 12. In the inside of the building 12, the transmitters 30 have a plurality of passages (spaces in the entrances 14 and 15, corridors 25 and 26, and rooms 21 to 24) which are expected to be used by the escape applicant. The space is discretely installed in all of the spaces. Each transmitter 30 may be installed on a vertical wall, installed on a ceiling, installed on a floor, or installed suspended from a ceiling.

  Furthermore, several transmitters 30 are installed on the outer wall of each entrance 14, 15. These transmitters 30 can be used to confirm that the person who wants to escape has surely escaped from either of the entrances 14 and 15.

<About transmitter>

  As shown in FIG. 4, each transmitter 30 transmits a unique signal, and the unique signal represents a unique transmitter ID. Since it is known at which position in the building 12 each transmitter 30 is installed, its installation position, that is, a spatial coordinate value (x, y, z) is assigned in advance to the transmitter ID.

  First, conceptually, the transmitter 30 is a noncontact or contact (proximity) communication device that locally transmits an identification signal capable of identifying a unique transmitter ID.

  Next, to explain the operation method, the transmitter 30 actively transmits a unique identification signal without requiring an external trigger signal, locally, and permanently as long as the power supply is not insufficient. Do.

  The transmitter 30 is a device generally known as a beacon device that transmits a beacon signal as an identification signal, or a name such as a wireless tag. In one example, the transmitter 30 generates an identification signal representing a corresponding transmitter ID by modulating an original signal, and the generated identification signal is converted into an IR signal, a Bluetooth (registered trademark) signal, an NFC, and the like. (Local communication) It transmits locally as a signal etc.

  Next, the hardware configuration will be described with reference to FIG. 4. The transmitter 30 is mainly configured by a processor 104 and a computer 104 having a memory 102 for storing a plurality of applications executed by the processor 100. There is.

  The transmitter 30 further includes a replaceable disposable battery 106 as a power source. Instead of the battery 106, a rechargeable battery can be employed, or a commercial power source or a solar cell as an external power source can be employed.

  When a solar cell is used as an external power source, surplus electrical energy generated using the solar cell is accumulated in the battery during the daytime, and the transmitter 30 is activated by taking out the battery energy from the battery at night. You may

  The transmitter 30 further includes a transmitter 108 that generates and transmits an identification signal. The transmitter 108 is operated by the battery 106 and controlled by the controller 110. The controller 110 is controlled by the computer 100.

  The software configuration of the transmitter 30 will be described. The processor 100 outputs a signal for modulating the original signal (for example, a carrier signal) to the controller 110 so that the transmitter ID is reflected. The controller 110 controls the transmitting unit 108, and as a result, the transmitting unit 108 generates an identification signal to be transmitted this time. Thereafter, the generated identification signal is transmitted from the transmitter 108.

<About mobile terminal>

  The mobile terminal 90 of the escape applicant (user) is a device carried by the user and having a wireless communication function, such as a mobile phone, a smartphone, a laptop computer, a tablet computer, a PDA, or the like. The portable terminal 90 is an example of a user's communication terminal, and the communication terminal may be one that is not carried by the user, for example, an on-vehicle communication terminal.

  Next, the hardware configuration of the portable terminal 90 will be described with reference to FIG. 5. The portable terminal 90 is a memory that stores a processor 130 and a plurality of programs (also referred to as “applications”) executed by the processor 130. A computer 134 having 132 is mainly configured.

  The portable terminal 90 further includes a display unit (for example, a liquid crystal display) 136 that displays information, a receiving unit 138 that receives signals from the transmitter 30 and the management server 50, and generates and manages the signals. And a transmission unit 140 that transmits to the server 50. Here, the receiving unit 138 is a part that senses an electromagnetic wave from the transmitter 27 of the sensor 26 and a part that senses an identification signal from the transmitter 30.

  The portable terminal 90 further includes an input unit 150 for inputting data and commands from the user. The input unit 150 includes, for example, an operation unit that can be operated by the user to input desired information (for example, commands, data, and the like) to the mobile terminal 90. The operation unit may be a touch screen that displays an icon (for example, a virtual button) that can be operated by the user, a physical operation unit (for example, a keyboard, a keypad, or a button) that can be operated by the user, and voice. There is a microphone to detect, but it is not limited to these.

  The portable terminal 90 further includes a GPS (satellite positioning system) receiver 152. The GPS receiver 152 receives a plurality of GPS signals from a plurality of GPS satellites, as is well known, and based on the GPS signals, determines the position (latitude, longitude and altitude) of the GPS receiver 152 on the earth Measure by triangulation.

  The portable terminal 90 further incorporates an acceleration sensor 154 for detecting its own acceleration. Since the acceleration sensor 154 is mounted on the portable terminal 90, the acceleration sensor 154 vibrates integrally with the portable terminal 90, and as a result, the acceleration acting on the acceleration sensor 154 itself is detected by the portable terminal 90 and the user who carries the acceleration sensor 154. It is detected as equivalent to the acceleration acting on.

  Here, in order to explain one function of the user's portable terminal 90 in association with the transmitter 30, the portable terminal 90 receives an identification signal from the transmitter 30 and transmits it to the computer of the portable terminal 90. A certain pre-installed program, that is, a dedicated application for transmitter processing (hereinafter referred to as “transmitter application”) is activated (logs in), and the received identification signal is demodulated, thereby, Decode the transmitter ID. The portable terminal 90 further transmits the decrypted transmitter ID to the management server 50 together with the user ID or the terminal ID (device ID).

  Furthermore, when the mobile terminal 90 starts the transmitter application while receiving the identification signal from the transmitter 30, the identification is performed based on the received identification signal (for example, the strength of the identification signal). It also measures the distance between the position of the transmitter 30 when the signal is transmitted and the position of the portable terminal 90 when the identification signal is received.

  That is, based on the identification signal received from the transmitter 30, the portable terminal 90 transmits a transmitter ID unique to the compartment 22 in which the transmitter 30 is actually installed, and the distance between the transmitter 30 at that time and the transmitter ID. Both are to be acquired.

<Receiver range>

  The transmitter 30 is apparently assigned two types of reception areas. They are a receivable area and an effective reception area (hereinafter also referred to as “reception range” or “reception area”).

  All of these areas are generally defined by a single circle centered on the installation position of the transmitter 30. Some examples of reception areas are shown in FIGS. 7 (a) and 7 (d).

  The coverage area of the transmitter 30 has a maximum reception radius (for example, about 50 m), while the effective reception area has an effective reception radius (for example, any value within a range from 0 m to about 50 m). . The maximum reception radius is an invariant value, whereas the effective reception radius is a variable value that can be set by the mobile terminal 90 as needed, as will be described later.

  When the power supply of the transmitter 30 is normal, the receivable area is an area where the identification signal from the transmitter 30 is reachable, that is, as long as the portable terminal 90 exists in that area, the portable terminal 90 receives the identification signal. It means possible area.

  On the other hand, the effective reception area has an effective reception radius smaller than the maximum reception radius of the coverage area. While the maximum reception radius can not be set arbitrarily, the effective reception radius can be set arbitrarily in software in the portable terminal 90.

  That is, the maximum reception radius can mean the reception limit determined by hardware, while the effective reception radius can mean the reception limit determined by software.

  As described above, the mobile terminal 90 measures the distance from the transmitter 30 based on the strength of the identification signal received by the mobile terminal 90. The distance measurement may or may not exceed the effective reception radius. And when the distance measurement value does not exceed the reception effective radius, it is when the portable terminal 90 exists in the effective reception area, but when the distance measurement value exceeds the reception effective radius, the portable terminal 90 is Is present in the receivable area but not in the effective reception area.

  In the present embodiment, the reception range of the transmitter 30 is set to be, for example, a circular area with a radius of about 1 m to 5 m. That is, the effective reception radius used in the portable terminal 90 is set to a fixed value within about 1 m-5 m.

  Although the reception effective radius does not change in the portable terminal 90, in reality, even if the distance to the portable terminal 90 is the same, the reception strength of the identification signal fluctuates due to disturbance or the like. Therefore, the radius of the reception area is fluctuated apparently as illustrated in FIGS. 7 (a) and 7 (d). Here, the apparent reception area means a reception area having the effective reception radius when expressing the fluctuation error of the reception strength as the fluctuation of the effective reception radius.

  FIG. 6 conceptually shows a transmitter ID transmission program executed by the computer 134 of the portable terminal 90 in a flowchart. FIGS. 7A to 7F show a plurality of types in order to explain a part in which the portable terminal 90 processes a signal received from the transmitter 30 in the transmitter ID program shown in FIG. FIG. 16 is a conceptual diagram showing the reception area of and a time chart for explaining a signal processing algorithm.

  Prior to the description of the transmitter ID transmission program, the signal processing algorithm will be described.

  FIG. 7A to FIG. 7C show three transmitters 30 arranged in a line when the apparent reception area matches the regular reception area (the reception area that faithfully reflects the effective reception radius). The transmitter ID is extracted from the signal received from.

  In the present embodiment, the intervals between the transmitters 30 are set, for example, such that normal reception areas do not overlap each other. For example, when the effective reception radius is set to 2 m, the inter-transmitter interval is set to a distance longer than 2 m × 2, for example, 5 m.

  In the scenario shown in FIG. 7A, when the user walks at the constant speed from the left side to the right side with the three transmitters A, B, and C holding the portable terminal 90, as shown in FIG. 7B. The transmitter ID represented by the signal received by the mobile terminal 90 (hereinafter simply referred to as “received signal”) does not pass the overlapping period, but rather passes the blank period. It changes with.

  On the other hand, in the present embodiment, as shown in FIG. 7C, signal processing is performed so that the blank period of the transmitter ID does not occur, that is, the transmitter ID changes seamlessly. Specifically, for example, when the received signal from the transmitter 30 disappears, the transmitter ID represented by the received signal that was present immediately before is regarded as the current transmitter ID. As a result, a blank period does not appear between the reception period of one transmitter ID and the reception period of another transmitter ID.

  In this embodiment, since the portable terminal 90 transmits the transmitter ID to the management server 50 each time the transmitter ID is switched, the management server 50 receives the reception time each time the transmitter ID is switched. Will be measured. That is, the portable terminal 90 does not periodically transmit the transmitter ID to the management server 50 regardless of whether the transmitter ID is switched or not. Thereby, the transmission load of the portable terminal 90 is reduced, and at the same time, the reception load of the management server 50 is reduced.

  On the other hand, FIG. 7D to FIG. 7F show that the apparent reception area does not match the normal reception area, and is larger than the normal reception area and overlaps the adjacent reception area. A state in which transmitter IDs are extracted from signals received from three transmitters 30 arranged in a line is shown.

  In the scenario shown in FIG. 7D, when the user holds the portable terminal 90 and walks three transmitters A, B, and C from the left side to the right side at a constant speed, as shown in FIG. 7E. The transmitter ID represented by the signal received by the portable terminal 90 changes with time after an overlapping period, that is, a period in which interference occurs.

  On the other hand, in the present embodiment, as shown in FIG. 7F, the signal processing is performed so that the overlap period of the transmitter IDs does not occur, that is, only one transmitter ID is always present. Be done. Specifically, for example, when interference of a received signal occurs, only a new transmitter ID is validated, and an old transmitter ID is invalidated. As a result, an overlap period does not occur between the reception period of a certain transmitter ID and the reception period of another transmitter ID.

  Here, the transmitter ID transmission program will be described with reference to FIG.

  This program is 1) unconditionally and automatically started, for example, in the background, when the portable terminal 90 is powered on, or 2) the portable terminal 90 measures using the GPS Execution is automatically started on the condition that the mobile terminal 90 detects that the current position matches the building 12, or 3) the mobile terminal 90 issues a start command from the management server 50 (the management server 50 sends the building 12 (In the case where the management server 50 transmits a start command in response to the detection of the occurrence of a disaster), the execution is automatically started in response to that or 4) the start command from the user In response to this, execution is started manually.

  In any case, this program is repeatedly executed by the computer 134 of the portable terminal 90. When executing each time, first, in step S61, it is determined whether the receiving unit 138 has received a signal from any of the transmitters 30 or not. If not received, it is determined in step S62 whether or not the previous transmitter ID (i-1) obtained from the transmitter 30 at the previous execution of this program was zero. If this determination is YES, in step S63, the current transmitter ID (i) is set to 0, whereby the transmitter ID is held at 0. This is the end of the execution of this program.

  On the other hand, if determination of step S62 is NO, in step S64, this transmitter ID (i) will be set to the same thing as last transmitter ID (i-1). As a result, the transmitter ID is held at the previous transmitter ID (i-1), and the generation of the blank period of the transmitter ID is prevented.

  Thereafter, in step S69, it is determined whether the current transmitter ID (i) is different from the previous transmitter ID (i-1), that is, whether the transmitter ID has been shifted. Since the shift does not exist this time, the determination becomes NO, and step S70 of transmitting with the management server 50 is skipped. This is the end of the execution of this program.

  On the other hand, if the receiving unit 138 receives a signal from any transmitter 30, the determination in step S61 is YES, and then, in step S66, the current transmitter ID ( i) is obtained. Thereafter, in step S67, it is determined whether or not there are a plurality of transmitter IDs (i) because the receiving unit 138 has received signals from the plurality of transmitters 30 at the same time. If it is assumed that there is only one transmitter ID (i) this time, the determination is NO, and then in step S68, the one transmitter ID (i) is properly adopted.

  Thereafter, in step S65, it is determined whether the current transmitter ID (i) is different from the previous transmitter ID (i-1), that is, whether the transmitter ID has been shifted. If it is assumed that there is no shift this time, the determination is no and step S70 is skipped. This is the end of the execution of this program.

  On the other hand, this time, assuming that the shift exists, the determination is YES, and in step S70, the current transmitter ID (i) is the user ID (identification information of the user of the mobile communication terminal 90) And the terminal ID of the portable communication terminal 90). This is the end of the execution of this program.

  On the other hand, assuming that there are a plurality of transmitter IDs (i) because the receiving unit 138 received signals from the plurality of transmitters 30 at the same time, the determination in step S67 is YES, and in step S70, Transmitter ID (i) (usually, two transmitter IDs (i)), which are different from the previous transmitter ID (i-1), are the current transmitter IDs (i) Adopted as As a result, the occurrence of an overlap period of transmitter IDs is prevented. Thereafter, the process proceeds to step S65.

<About Management Server>

  Next, the hardware configuration of the management server 50 will be described. FIG. 8 shows the management server 50 in a functional block diagram. The management server 50 is mainly configured of a computer 164 having a processor 160 and a memory 162 for storing a plurality of applications executed by the processor 160.

  The management server 50 further generates a signal by displaying a display unit (for example, a liquid crystal display) 166 that displays information, a receiving unit 168 that receives a signal from the portable terminal 90, and transmits the signal to the portable terminal 90. And a clock 172. This management server 50 does not directly receive from the transmitter 30, but in effect via the mobile terminal 90.

  In FIG. 9, the software configuration of the management server 50 in particular is shown in another functional block diagram. In order to generate and spread evacuation guidance information, the management server 50 generally searches for an actual evacuation route for each floor of the building 12 and for each person who wants to escape in real time sequentially and repeatedly. Among the plurality of evacuation routes which are presumed to have been used individually by a plurality of escape applicants, portions which are mutually common in place are estimated as successful escape routes commonly used by the escape applicants.

  In order to realize this function, as shown in FIG. 9, the management server 50 includes a receiving unit 200 that receives a transmitter ID and a user ID from the transmitting unit 140 of each mobile terminal 90, and the received transmitter ID. And a storage unit 202 which stores the reception time received by the management server 50 from each portable terminal 90 in the memory 162 in association with the user ID.

  As shown in FIG. 9, the management server 50 further requests each escape according to a predetermined relationship (conversion table) between the transmitter ID and the space coordinate value and stored in the memory 162. For each person, the time histories of the plurality of transmitter IDs stored in the memory 162 are converted into time histories of a plurality of spatial coordinate values representing the installation positions (reception points) of the plurality of transmitters corresponding thereto, The evacuation route estimation unit 204 estimates the evacuation route actually used by each escape applicant from the time histories of the plurality of space coordinate values for each escape applicant.

  FIG. 10 conceptually shows the relationship (conversion table). If this relationship is followed, the space position where one transmitter 30 which is one space coordinate value and the transmitter ID is assigned is acquired from one transmitter ID. Furthermore, the floor number of the floor where the transmitter 30 is installed in the building 12 can also be acquired.

  Therefore, by referring to this conversion table, it is possible to convert the time histories of the plurality of transmitter IDs into the time histories of the plurality of spatial coordinate values representing the installation positions of the corresponding plurality of transmitters.

  FIG. 11A shows, as data, time histories of a plurality of space coordinate values temporarily stored in the memory 162 for each exit applicant, that is, an example of time histories of a plurality of reception points. FIG. 11 (b) shows time histories (continuous data) of a plurality of movement vectors converted from time histories (discrete data) of a plurality of reception points shown in FIG. That is, the evacuation route estimated to be actually used by the person who wants to escape is represented as data.

In FIG. 12A, time histories of a plurality of reception points shown in FIG. 11A are represented as a reception point sequence (discrete data) in a three-dimensional space. In reception point train shown in this figure, a partial reception point string corresponding to the first corridor 25, a partial reception point string corresponding to the first staircase 16, and a partial reception point column you corresponds to the first entrance 14 They are lined up in a row.

  In FIG. 12 (b), time histories of a plurality of movement vectors shown in FIG. 11 (b) are represented as a movement vector sequence (continuous data) in a three-dimensional space. In the movement vector sequence shown in this figure, a partial movement vector sequence corresponding to the first corridor 25, a partial movement vector sequence corresponding to the first staircase 16, and a partial movement vector sequence corresponding to the first entrance 14 are arranged in one row. Are arranged in order.

  As shown in FIG. 9, the management server 50 further determines a portion common to each other among a plurality of evacuation routes estimated to be individually used by a plurality of escape applicants. Has a successful escape route estimation unit 206, which is assumed to be a successful escape route commonly used.

In FIG. 13A, three exemplary movement vector sequences acquired for the building 12 are represented on the xy plane for convenience of explanation. Further, in FIG. 13 (b), the overlapping part of the three movement vector sequences shown in FIG. 13 (a) is represented on the xy plane as a successful exit route of the preceding evacuation phase 1 (at time t1). It is done. The exemplary successful escape route has a segment corresponding to the first corridor 25, a segment corresponding to the first step 16, and a segment corresponding to the first entrance 14. Further, in FIG. 13C , an exemplary successful escape route of the subsequent evacuation phase 2 (time t2 after time t1) is represented on the xy plane. The exemplary successful escape route has a segment corresponding to the first corridor 25, a segment corresponding to the second staircase 17, and a segment corresponding to the second entrance 15.

  Thus, the successful escape route may change from moment to moment as the building 12 is damaged or damaged.

  As illustrated in FIG. 9, the management server 50 further, for each exit applicant, associates a plurality of transmitters 30 corresponding to the estimated successful exit route, and stores a plurality of reception times stored in the memory 162. From the time difference between them, the movement speed of each person who wants to escape is calculated along the successful escape route, and the difficulty level when the user exits the building using the successful escape route is calculated based on the calculated movement speed. An escape difficulty estimation unit 208 for estimation is provided.

  As shown in FIG. 9, the management server 50 further distributes (broadcasts) the evacuation guidance information to a plurality of portable terminals 90 of a plurality of other people who want to escape. It has the transmission part 210 (a successful escape route delivery part is included) shared among those who want to escape.

  As shown in FIG. 14, the “evacuation guidance information” includes the successful escape route estimated for each floor and the escape difficulty level estimated for each escape route.

  Therefore, the escape applicant who has acquired the evacuation guidance information is recommended from which floor to exit the building 12 from the floor where he / she is now, and how much preparation and It is possible to know from the evacuation guidance information whether the attitude is necessary or how crowded it is.

  In FIG. 15, the reception processing program executed by the computer 164 of the management server 50 is conceptually represented by a flowchart.

  This program is repeatedly executed by the computer 134 of the portable terminal 90. When executing each time, first, in step S1501, it is determined whether the receiving unit 168 has received a signal (a transmitter ID and a user ID) from any of the portable terminals 90. If there is no reception, the determination is no and the current execution of this program ends.

  On the other hand, if there is reception, the determination in step S1501 is YES, and the current time is measured as the reception time using the clock 172 in step S1502. In step S1503, a user ID is extracted from the received signal. Thereafter, in step S1504, a transmitter ID is extracted from the received signal.

  Subsequently, in step S1505, the extracted transmitter ID is converted into a corresponding spatial coordinate value (data representing the position of the reception point) by referring to the conversion table illustrated in FIG. Thereafter, in step S1506, as illustrated in FIG. 11A, the memory 162 stores the measured reception time, the extracted transmitter ID, and the spatial coordinate value acquired by the conversion. It is stored in association with each other. This is the end of the execution of this program.

  FIG. 16 conceptually shows a flowchart of an evacuation route estimation program executed by the computer 164 of the management server 50.

  This program is repeatedly executed by the computer 134 of the portable terminal 90. At the time of each execution, first, at step S1601, as shown in FIG. 9, it is determined whether or not a disaster has occurred in the building 12 by monitoring at least one of the fire alarm 28 and the disaster monitoring system 29. Be done. If no disaster occurs, the determination is no and the current execution of this program is terminated.

  On the other hand, if a disaster occurs in the building 12, the determination in step S1601 becomes YES, and in step S1602, a plurality of escape applicants (for example, the management server 50 is previously notified as a person concerned with a plurality of buildings 12). Among those registered), one person (execution target person) who is the target of the current execution of this program is selected as a person who wishes to escape from the current target.

  Subsequently, in step S1603, as shown in FIG. 11A, the data associated with the current target escape applicant is read out from the memory 162, as shown in FIG. 12A. A time history in which the reception points are arranged in a line in time series, that is, a reception point sequence is acquired.

  Thereafter, in step S1604, the acquired reception point sequence is converted into a movement vector sequence as shown in FIGS. 11B and 12B. The movement vector sequence is data for estimating the evacuation route.

  Since this program is periodically executed, the evacuation of each person who wants to escape proceeds with time, and the movement vector sequence becomes longer as the evacuation route becomes longer.

  An algorithm for converting a reception point sequence into a movement vector sequence will be specifically and exemplarily described. In the example shown in FIG. 11, for example, a space coordinate value P1 at time t1 and a subsequent time t2 From the spatial coordinate value P2 at this time, a first movement vector having a start point P1 and an end point P2 is generated. Next, a second movement vector having a start point P2 and an end point P3 is generated from the spatial coordinate value P2 at time t2 and the subsequent spatial coordinate value P3 at time t3.

  In this example, the spatial coordinate value P2 is shared as a connection point between the first movement vector and the second movement vector. As a result, the discrete data shown in FIG. 12A is converted into continuous data shown in FIG. The conversion process from the reception point sequence to the movement vector sequence can be grasped as an interpolation process of the reception point sequence.

  Subsequently, in step S1605, it is determined whether or not all evacuation applicants have been selected as execution subjects. If there are escape applicants who have not yet been selected as execution targets, the determination is NO, and another escape applicant is selected as the next execution target in step S1606. Thereafter, the process returns to step S1603.

  If the execution of steps S1603-S1606 is repeated for all the escape applicants, the determination in step S1605 becomes YES, and it is determined in step S1607 that the estimation of the actual evacuation route has been completed for all the escape applicants (for all). Be done.

  FIG. 17 conceptually shows a flowchart of a successful escape route estimation program executed by the computer 164 of the management server 50.

  This program is repeatedly executed by the computer 134 of the portable terminal 90. When executing each time, first, in step S1701, it is determined whether or not the estimation of the evacuation route is completed for all the members. If not completed, the determination is no and the current execution of this program ends.

  On the other hand, when the estimation is completed, the determination in step S1701 is YES, and in step S1702, for each evacuation route of each escape applicant, each escape applicant uses the evacuation route to escape. It is judged whether it succeeded or not. Specifically, for example, whether or not each person who wants to escape has escaped from the building 12 through one of the entrances 14 and 15, for example, a plurality of outgoing calls stored in the memory 162 for each person who wants to escape It is determined whether or not a transmitter ID corresponding to the transmitter 30 installed outside the entrances 14 and 15 exists in the device ID.

  Subsequently, in step S 1703, among the plurality of evacuation routes of the plurality of escape applicants stored in the memory 162, those determined to be successful are selected as the plurality of target evacuation routes.

  Thereafter, in step S1704, overlapping portions (in the case where there are a plurality of overlapping portions, respectively) among the plurality of selected target evacuation routes are extracted as successful escape routes.

  An example of an algorithm for extracting the overlapping part will be described.

  In the first step, a plurality of movement vector sequences representing a plurality of target evacuation routes are respectively fixed to the building 12 in a three-dimensional orthogonal coordinate system (x axis: vertical axis, y axis: horizontal axis, z axis: height axis ) Are converted into a group of a plurality of dots. Each dot is represented by a three-dimensional coordinate value (x, y, z). That is, the vector data representing one vector from the start point and the end point three-dimensionally indicates the position of each dot (pixel) when the continuous figure representing the vector is expressed as a collection of a plurality of dots (pixels) It is converted into bitmap data that represents it.

  In the second step, among the plurality of dots thus obtained, three-dimensional coordinate values substantially matching each other among a plurality of movement vector sequences for all the members (three-dimensional coordinate values having an error value equal to or less than an allowable value) Extract coordinate values).

  In the third step, a plurality of dots extracted in this way is divided into one straight line segment (one straight line) or one straight line segment row (one line consisting of a plurality of straight line segments connected in series with each other). Convert to a book (polyline). One straight line segment or one straight line segment string represents a successful exit route.

  In a 3rd step, what passes through the successful escape route acquired in that way among a plurality of parts of building 12 is extracted. For example, in the example of the successful escape route shown in FIG. 13B, the first entrance 14 is selected as a term that briefly represents the successful escape route. In the example of the successful escape route shown in FIG. 13C, the second entrance 15 is selected as a term that expresses the successful escape route briefly.

  When step S1704 ends, in step S1705, the successful escape route acquired in this way is stored in the memory 162 in association with the corresponding floor. For example, since the successful escape route shown in FIG. 13B is formed using the transmitter 30 installed on the first floor portion 13 and the transmitter 30 installed on the second floor portion 20, It is associated with the second floor respectively. This is the end of the execution of this program.

  Another example of the algorithm for extracting the overlapping part will be described.

  In the memory 162, the same transmitter code shared among all or almost all is searched as a shared transmitter code, and the plurality of searched shared transmitter codes are ordered by time of reception (for example, for one exit applicant) To generate a time history of a plurality of shared transmitter codes with reference to a plurality of reception times, and thereby define a successful escape route.

  FIG. 18 conceptually shows a flowchart of the escape difficulty level estimation program executed by the computer 164 of the management server 50.

  This program is repeatedly executed by the computer 134 of the portable terminal 90. At the time of execution of each time, first, in step S1801, the moving speed when the escape requester moves along each of the plurality of moving vectors belonging to the latest successful exit route is calculated as an individual moving speed.

  The algorithm for calculating the individual movement velocity will be specifically described by taking the successful escape route shown in FIG. 13 (b) as an example. This success escape route is defined by six movement vectors, and among the movement vectors, As shown in FIG. 13A, the most upstream movement vector is shared among the escape requester A, the escape requester B, and the escape requester C. However, the movement speeds of the people who want to escape when moving along the movement vector do not always coincide with each other.

  For example, for the person A who wants to escape, the most upstream movement vector is defined by the start point coordinate value P3 acquired at the reception time t3 and the start point coordinate value P4 acquired at the reception time t4. A value obtained by dividing the distance between the start point and the end point (= the length of the line segment P3P4) by the difference in reception time (= t4−t3) is the individual movement speed for this movement vector. Similarly, the individual movement speed is calculated for the same movement vector for the person B who wants to escape. Similarly, the individual movement speed is calculated for the same movement vector for the person who wants to escape C.

  For the most upstream movement vector, a value obtained by averaging the three individual movement speeds is the individual movement speed. Similarly, the individual movement speed is calculated for each of the other movement vectors.

  Subsequently, in step S1802, a combined value of a plurality of individual movement speeds calculated for a plurality of movement vectors belonging to the latest successful escape route is calculated as a combined movement speed. The combined moving speed can be an unweighted average value or a weighted average value.

  Thereafter, in step S1803, based on the calculated combined movement speed, the degree of difficulty when the escape candidate uses the latest successful escape route is estimated.

  For example, when the calculated value of the combined movement speed is equal to or higher than the reference value, it is estimated that the difficulty level during the escape is low because the escape may have been performed smoothly. On the other hand, when the calculated value of the combined moving speed is lower than the reference value, it is possible that the escape was not smoothly performed, and it is estimated that the difficulty at the escape was high.

  Subsequently, in step S1804, the estimated difficulty level is stored in the memory 162 in association with the successful escape route. This is the end of the execution of this program.

  FIG. 19 conceptually shows a transmission processing program executed by the computer 164 of the management server 50 in a flowchart.

  This program is repeatedly executed by the computer 134 of the portable terminal 90. At the time of each execution, first, in step S1901, the successful exit route data representing the latest successful exit route is read from the memory 162. Next, in step S1902, the latest escape difficulty level data representing the latest escape difficulty level is read from the memory 162. Subsequently, in step S1903, evacuation guidance information is generated from the read successful escape route data and escape difficulty data. Thereafter, in step S 1904, the generated evacuation guidance information is transmitted from the transmission unit 170 to the mobile terminals 90 of all those who wish to escape. This is the end of the execution of this program.

  By the way, according to this system 10, when a fire occurs in a building 12, before a fire brigade arrives at the building 12, a plurality of escape applicants staying in the building 12 build their own buildings 12 activities are supported.

  When a fireman arrives at the building 12, i.e. the site of the fire, the fireman seeks to seek out and rescue the survivors who are left behind in the building 12. At this time, the fire brigade may need to enter a dangerous location in the building 12.

  At this time, the fire brigade has a drone capable of remote control and autonomous navigation, which is equipped with a camera and a communication device, and is led by the drone. That is, a hoverable drone flies in front of the fire brigade, photographs the scene with the drone camera, and transmits the image to the fire brigade's portable terminal. This enables firefighters to remotely photograph the scene to search for survivors and secure a safe course with a reduced risk.

  Furthermore, although the above-mentioned some embodiments apply the present invention to the use of escape support from a building at the time of disaster, it is possible to apply to other uses.

  For example, according to the present invention, in a closed space, among a plurality of moving routes estimated to be individually used by a plurality of users (users of the portable terminal 90), portions mutually common in place are extracted. The present invention can be applied to a use in which it is estimated that there is an object of interest that the plurality of users share in common at the same position as the extracted portion or a position near the same.

  In this aspect, a target of interest commonly shown by a plurality of users is identified, and if the result of the identification is used, for example, if the target is a product, the activation of marketing activities of the product is supported. it can.

  Here, as the “closed space”, for example, there are a store where a plurality of products are displayed, an exhibition room where a plurality of works are displayed, a museum, an art museum, a library and the like.

  According to the present invention, further, in a closed space, for each user, between transmission times or reception times stored in the memory in association with a plurality of transmitter IDs corresponding to the estimated moving route From the time difference, it is possible to apply to the use of extracting, as a bottleneck, a portion of the moving route where the moving speed of the user is lower than a reference value.

  In this aspect, if a bottleneck in a closed space is extracted, it is possible to support improvement of the flow of people, the placement of departments, and the passage so that the bottleneck is reduced or eliminated.

  Here, as the “closed space”, for example, a business entity (for example, a company, a factory, a hospital, a government office, a production site, etc.) in which a plurality of departments cooperating mutually under an organization exist spatially discretely There is.

  Furthermore, in the present embodiment, all or part of the processing executed in the portable terminal 90 may be executed instead by the management server 50, or conversely, it is executed by the management server 50. All or part of the processing may be executed in the mobile terminal 90 instead. It is usually determined by which device the process to be executed is executed, depending on circumstances at that time, for example, the amount and type of data to be handled, the processing speed and storage capacity of each device, etc. .

  Although some of the exemplary embodiments of the present invention have been described above in detail based on the drawings, these are only examples, and the aspects described in the section of the [Summary of the Invention] can be used by those skilled in the art. The present invention can be implemented in other forms in which various modifications and improvements are made based on knowledge.

Claims (9)

A system for guiding a route for a plurality of escape applicants to safely escape from a building at the time of a disaster,
A plurality of transmitters discretely installed in the building, each transmitter transmitting an identification signal representing a unique transmitter ID;
A plurality of communication terminals carried by a plurality of escape applicants, each capable of receiving an identification signal from each transmitter by the near field communication method;
A management server capable of communicating with the plurality of communication terminals,
Upon receiving a signal from one of the transmitters, the communication terminal of each person who wants to leave, the transmitter ID represented by the signal, and the terminal / user ID that is the identification information of the communication terminal or the identification information of the user, A transmitting unit for transmitting to the management server,
The management server
A receiver that receives the transmitter ID and the terminal / user ID from each communication terminal;
A storage unit that associates the received transmitter ID with the transmission time when each communication terminal transmits to the management server or the reception time when the management server receives from each communication terminal, and the terminal / user ID in the memory When,
According to a predetermined relationship between the transmitter ID and the space coordinate value stored in the memory, the time of a plurality of transmitter IDs stored in the memory for each person who wants to escape The history is converted into a time history of a plurality of spatial coordinate values representing the installation positions of a plurality of corresponding transmitters, and for each escape applicant, each escape requester is extracted from the time history of the plurality of spatial coordinate values. An evacuation route estimation unit for estimating the evacuation route actually used;
Of the plurality of transmitters installed at a position near the exit of the building, it is determined whether or not each communication terminal has received a transmitter ID, whereby the evacuation route estimation unit desires for escape from a plurality of people. Out of a plurality of evacuation routes estimated to have been used individually by each person, a plurality of evacuation routes used by a plurality of escape successful persons who successfully escaped from the exit of the building are regarded as a plurality of escape success evacuation routes A segment that is common to each other among the selected successful escape routes is estimated as a successful escape route commonly used by the plurality of successful escapers among the plurality of escapeable applicants and not among the plurality of escapeable candidates. Including an escape route estimation unit and
Each space coordinate value is three-dimensionally defined in a three-dimensional orthogonal coordinate system fixed to the building,
The evacuation route estimation unit includes a movement vector in which a plurality of movement vectors are arranged in a line in a three-dimensional orthogonal coordinate system fixed to the building, for each escape applicant, the time history of the plurality of spatial coordinate values. Convert it into a column, define the evacuation route as its movement vector sequence,
The successful escape route estimation unit converts each movement vector sequence into a group of a plurality of dots in a three-dimensional orthogonal coordinate system fixed to the building, and among the dots, the plurality of people who want to escape are converted. A plurality of movement vector sequences that substantially coincide with each other are extracted, and the extracted dots are converted into one straight line segment or one straight line segment composed of a plurality of straight line segments connected in series with each other. Convert to a column and define the successful exit route as one straight segment or one straight segment column,
A disaster escape route guidance system for guiding the estimated successful escape route to other escape applicants in the same building . The management server further
The estimated successful escape route is distributed to a plurality of communication terminals of other multiple escape applicants, thereby successfully sharing evacuation guidance information based on the successful escape route among the multiple escape applicants. The disaster escape route guidance system according to claim 1, further comprising an escape route distribution unit. The evacuation route estimation unit includes a disaster determination unit that determines whether a disaster has occurred in the building,
The evacuation route estimation unit is activated when the disaster determination unit determines that a disaster has occurred.
The successful escape route estimation unit includes an escape determination unit that determines which escape candidate has succeeded in leaving the building,
The successful escape route estimation unit is estimated to be used by a plurality of escape applicants determined by the escape determination unit as having escaped from the building among the plurality of evacuation routes estimated. The disaster escape route guidance system according to claim 1 or 2, wherein the successful escape route is estimated from the plurality of selected evacuation routes.   The disaster escape route guidance system according to claim 3, wherein the disaster judgment unit interlocks with a fire alarm installed in the building or a disaster monitoring system existing outside the building. The building has a plurality of entrances as the exits,
The plurality of transmitters include a plurality of entrance transmitters installed respectively in the plurality of entrances,
When the escape determination unit receives the transmitter ID of any one of the entrance transmitters from the communication terminal of each of the applicants, the escape candidate may receive one of the plurality of entrances from the building. 4. The disaster escape route guidance system according to claim 3 , wherein it is determined that the user escapes after passing through the one where the entrance transmitter is installed. The building has a plurality of floors,
The disaster escape route guidance system according to any one of claims 1 to 5, wherein the successful escape route estimation unit estimates a successful escape route for each floor of the building and sequentially and repeatedly in real time.   Furthermore, for each escape applicant, the successful escape route is obtained from the time difference between the plurality of transmission times or reception times stored in the memory in association with the plurality of transmitter IDs corresponding to the estimated successful escape route. Including an escape difficulty degree estimation unit that calculates the moving speed of each escape applicant along the road, and estimates the degree of difficulty when leaving the building using the successful escape route based on the calculated moving speed A disaster escape route guidance system according to any one of claims 1 to 6. The program for functioning a computer as a management server in any one of Claim 1 thru | or 7 . The recording medium which recorded the program of Claim 8 so that computer reading was possible.

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