WO2024116698A1

WO2024116698A1 - Evacuation guidance presentation system, evacuation guidance presentation method, program, and disaster prevention system

Info

Publication number: WO2024116698A1
Application number: PCT/JP2023/039191
Authority: WO
Inventors: 吉祥永谷; 将大鶴居; 浩史久保田
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2022-11-28
Filing date: 2023-10-31
Publication date: 2024-06-06

Abstract

An evacuation guidance presentation system (10) provides evacuation guidance by presenting an evacuation route in a facility, and is provided with: a calculation unit (11) that acquires a detection result from each of a plurality of sensors (21) provided respectively in a plurality of unit spaces that virtually divide a facility, and calculates a spatial risk value for each of the plurality of unit spaces from the acquired detection results; a determination unit (12) that determines an optimal evacuation route, which is the evacuation route for which the sum of the spatial risk values for one or more unit spaces passed through by the evacuation route is the smallest among a plurality of evacuation routes in the facility; and a presentation unit (13) that causes the evaluation route determined as the optimal evacuation route by the determination unit (12) to be presented.

Description

Evacuation guidance presentation system, evacuation guidance presentation method, program, and disaster prevention system

The present invention relates to an evacuation guidance presentation system, an evacuation guidance presentation method, a disaster prevention system including the evacuation guidance presentation system, and a program.

　Technology has been developed to support the safe evacuation of disaster victims such as fires by automatically generating evacuation routes (also called evacuation paths) (see, for example, Patent Document 1).

JP 2010-5292 A

However, in conventional evacuation support technologies, the evacuation routes generated were sometimes inappropriate. The present invention provides an evacuation guidance presentation system that generates and presents more appropriate evacuation routes, thereby supporting safer evacuations.

The evacuation guidance presentation system according to one embodiment of the present invention is an evacuation guidance presentation system that provides evacuation guidance by presenting evacuation routes in a facility, and includes a calculation unit that acquires detection results from each of a plurality of sensors provided in a plurality of unit spaces that virtually divide the facility, and calculates a spatial hazard value for each of the plurality of unit spaces from the acquired detection results, a determination unit that determines an optimal evacuation route, which is an evacuation route among a plurality of evacuation routes in the facility that has the smallest sum of the spatial hazard values of one or more of the unit spaces that the evacuation route passes through, and a presentation unit that causes the evacuation route determined as the optimal evacuation route by the determination unit to be presented.

The evacuation guidance presentation method according to one embodiment of the present invention is a computer-executed method for providing evacuation guidance by presenting evacuation routes in a facility, which obtains detection results from a plurality of sensors provided in a plurality of unit spaces virtually dividing the facility, calculates a spatial hazard value for each of the unit spaces from the obtained detection results, determines an optimal evacuation route among the plurality of evacuation routes in the facility, which is the evacuation route that has the smallest sum of the spatial hazard values for one or more unit spaces passed through on the evacuation route, and presents the evacuation route determined to be the optimal evacuation route.

A program according to one aspect of the present invention is a program for causing a computer to execute the evacuation guidance presentation method described above.

A disaster prevention system according to one embodiment of the present invention includes the evacuation guidance presentation system described above and the plurality of sensors installed in the facility.

The present invention provides an evacuation guidance presentation system that supports safer evacuation.

FIG. 1 is a block diagram showing a functional configuration of an evacuation guidance presentation system according to an embodiment. FIG. 2 is a block diagram showing a functional configuration of a calculation unit in another embodiment of the present invention. FIG. 3 is a flowchart illustrating an example of the operation of the evacuation guidance presentation system according to the embodiment. FIG. 4 is a diagram for explaining the height of the smoke layer in the embodiment. FIG. 5 is a diagram for explaining the spatial risk value in the embodiment. FIG. 6 is a diagram for explaining the relationship between the spatial danger value and the height of the smoke layer in the embodiment. FIG. 7 is a diagram for explaining determination of an optimal evacuation route in the embodiment. FIG. 8 is a diagram showing an example of presentation of an evacuation route according to the embodiment.

Below, the embodiments are described in detail with reference to the drawings. Note that the embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, component placement and connection forms, steps, and order of steps shown in the following embodiments are merely examples and are not intended to limit the present invention. Furthermore, among the components in the following embodiments, components that are not described in an independent claim are described as optional components.

Note that each figure is a schematic diagram and is not necessarily a precise illustration. In addition, in each figure, the same reference numerals are used for substantially the same configurations, and duplicate explanations may be omitted or simplified.

(Embodiment)
First, an outline of an evacuation guidance presentation system and a disaster prevention system according to an embodiment will be described. The disaster prevention system of the present invention is a system that detects the occurrence of a disaster such as a fire from a sensor attached to a facility and a detection result by the sensor, and uses the detection result to present an evacuation route from a current floor to outside the floor and guides evacuation. In other words, the disaster prevention system is a system that generates and outputs an appropriate evacuation route based on the detection result of the sensor. Here, the disaster prevention system and the evacuation guidance presentation system of the present invention do not consider movement between floors. Movement between floors means movement from one floor to another floor, such as movement from the second floor to the first floor. In the present invention, an evacuation route is generated from the floor where the disaster victim is currently located to outside the floor, that is, from the current location within the floor to an emergency staircase or an emergency exit (including an indoor connection to the same floor and another floor, or an exit to the outdoors) provided on the floor. Hereinafter, the emergency staircase or the emergency exit will be collectively referred to as an exit from the floor, or simply an exit.

When generating an evacuation route, the evacuation guidance presentation system comprehensively considers the risk of all routes from the current location to the exit and determines which is the least dangerous, i.e., the optimal evacuation route. For this reason, the evacuation guidance presentation system is able to present the route with the least risk by calculating the risk of all routes for each of multiple evacuation routes from the current location to the exit. This is a different concept from when an evacuation route from the current location branches off and an evacuation route is generated and output by simply selecting the branch with the lowest partial risk. This point will be explained in more detail later.

FIG. 1 is a block diagram showing the functional configuration of an evacuation guidance presentation system in an embodiment. As shown in FIG. 1, evacuation guidance presentation system 10 is incorporated into disaster prevention system 50 as a part of disaster prevention system 50. The function of evacuation guidance presentation system 10 is to obtain the detection results of sensor 21, generate evacuation routes from the detection results, and present them on guidance UI 22. In other words, evacuation guidance presentation system 10 is responsible for the information processing portion for presenting evacuation routes in disaster prevention system 50.

The disaster prevention system 50 includes the evacuation guidance presentation system 10, as well as a sensor 21 and a guidance UI 22. The disaster prevention system 50 may be realized as a system consisting of only the evacuation guidance presentation system 10 and the sensor 21 connected to an external guidance UI device, or as a system consisting of only the evacuation guidance presentation system 10 and the guidance UI 22 connected to an external sensor device.

The sensors 21 included in the disaster prevention system 50 include, for example, smoke detectors and heat detectors that detect smoke density values during a fire, detectors for detecting concentrations of specific components such as carbon monoxide or carbon dioxide, image sensors such as cameras that detect the presence or absence of fires or collapses, seismic intensity detectors that detect the seismic intensity during an earthquake, and illuminance detectors that quantify the visibility of evacuation routes. Below, the sensors 21 will be described as detectors that detect smoke density values.

The guidance UI 22 included in the disaster prevention system 50 may be configured with any device that can present an evacuation route (i.e., inform disaster victims) by presenting at least one of auditory and visual information. The guidance UI 22 includes, for example, an audio output speaker, a light flashing traveling guidance device (a device in which multiple light points emit light at different times, making it appear as if the light is traveling in the guidance direction), and an image display device such as a digital signage or tablet terminal.

The evacuation guidance presentation system 10 includes a calculation unit 11, a determination unit 12, and a presentation unit 13. The evacuation guidance presentation system 10 is realized by a computer that performs the functions of the information processing portion as described above. The evacuation guidance presentation system 10 may be realized, for example, by a virtual cloud computer constructed on a network, or by an edge computer installed in a facility or in another facility connected to the facility via a communication line.

The calculation unit 11 obtains the detection results from the sensor 21 and calculates a spatial danger value indicating the danger level of the space passing through on the evacuation route. More specifically, when the entire floor of the facility is virtually divided into a plurality of spaces, the evacuation route is configured to pass through some of the spaces of the division units (hereinafter, unit spaces). In other words, the evacuation route includes a plurality of unit spaces passing through on the route. The sensor 21 is provided for each unit space so that it can detect each unit space, and multiple sensors are provided for the entire floor. The sensor 21 is also configured so that it can sense within the unit space. In other words, the unit space corresponds to the area that the sensor 21 can detect. There are no particular limitations on the size of the unit space or the positional relationship with the sensor 21, but for example, the unit space may correspond to the detection area specified by the Fire Service Act, or the unit space may correspond to a 30 m x 30 m range that corresponds to the sensor installation standard for corridors and passageways specified by the Fire Service Act.

The spatial danger value is calculated from the detection results detected by the sensor 21 in one unit space at that time, and is a numerical value indicating the degree of danger of a victim passing through that unit space. Note that the spatial danger value changes from moment to moment, so it may be calculated as an estimate of the time (i.e., future) when a victim may pass, for example, using the spatial danger value at that time and past spatial danger values. As described above, a sensor 21 is individually installed in each unit space, and the calculation unit 11 calculates a spatial danger value for each of the multiple sensors 21. Note that a communication line is formed between the calculation unit 11 and the sensor 21 to exchange the detection results of the sensor 21. In addition to the calculation unit 11 and the sensor 21, other devices such as a transceiver and a gateway may be involved in this communication line.

The calculation unit 11 calculates the spatial danger value from the detection results obtained by algorithm calculation, but may also calculate the spatial danger value from the detection results obtained by inference applying machine learning. For example, FIG. 2 is a block diagram showing the functional configuration of the calculation unit in another example of the embodiment. The calculation unit 11a shown in FIG. 2 has a model 11b configured, for example, by a neural network model or the like. The model 11b is generated in advance by machine learning using detection result data D1 representing the detection results detected by a large number of sensors 21 and correct answer data D2 representing the correct value of the spatial danger value for each of the detection results of the large number of sensors. As a result, when the obtained detection result (here, the smoke concentration value) is input to the model 11b, an estimated value of the spatial danger value is obtained as an output. The calculation unit 11a may calculate the spatial danger value by estimation using such a model 11b.

Returning to FIG. 1, the determination unit 12 uses the spatial risk values calculated by the calculation unit 11 to determine an optimal evacuation route that is the most suitable evacuation route from among multiple evacuation routes. Determining an optimal evacuation route means selecting, from among multiple evacuation routes, an evacuation route that has the smallest sum of spatial risk values, calculated by adding up the spatial risk values of the unit spaces passed through on each evacuation route over the entire evacuation route.

The presentation unit 13 causes the guidance UI 22 to present the evacuation route determined to be the optimal evacuation route by the determination unit 12. In this example, the evacuation route is described as being presented using an image, but as described above, the presentation unit 13 may be appropriately configured according to the manner in which the evacuation route is presented. The presentation unit 13 obtains information on the evacuation route determined to be the optimal evacuation route, and generates an image by overlaying it on a floor map held in advance (stored in a memory unit, etc.). The generated image is then output and displayed on the guidance UI 22. Note that a communication line is formed between the presentation unit 13 and the guidance UI 22 to exchange the generated image. In addition to the presentation unit 13 and the guidance UI 22, other devices such as a transceiver and a gateway may be interposed in this communication line.

Next, the operation of the disaster prevention system 50, in particular the evacuation guidance presentation system 10, will be described with reference to FIG. 3. FIG. 3 is a flowchart showing an example of the operation of the evacuation guidance presentation system in the embodiment.

First, the sensor 21 constantly senses the smoke density value and transmits the smoke density value to the calculation unit 11. The calculation unit 11 acquires the smoke density value as the detection result (S101), and calculates the spatial danger value of the unit space in which the sensor 21 is installed at that time (S102). Here, the calculation of the spatial danger value will be explained with reference to Figs. 4 to 6. Fig. 4 is a diagram for explaining the height of the smoke layer in the embodiment. Fig. 5 is a diagram for explaining the spatial danger value in the embodiment. Fig. 6 is a diagram for explaining the relationship between the spatial danger value and the height of the smoke layer in the embodiment.

In this example, the height of the smoke layer, which takes into account the time elapsed since the occurrence of the fire, is used to calculate the spatial danger value together with the smoke density value. Here, the height of the smoke layer is explained with reference to FIG. 4. FIG. 4 shows the scene of the fire and the state where the victims are trying to escape from there. This space has a space height H. The space height is the distance from the floor to the ceiling. In contrast, smoke is generated by the fire, and the smoke fills the space from the upper part (ceiling side) in order. In other words, a smoke layer (shown by dot hatching) is formed from the ceiling side. The height _Za of the smoke layer is the distance from the floor to the bottom end of the smoke layer. The sensor 21 for detecting the smoke density value is provided on the ceiling, and detects the smoke density value Cs _(H) at the space height H. The smoke density value at the bottom end of the smoke layer (smoke layer height _Za ) is Cs _(Za) , and the relationship Cs _(H) >Cs _(Za) always holds.

When the height Z _a of the smoke layer reaches the height of the evacuee's face, the possibility of blocking the view or inhaling smoke increases, and the evacuee must change his/her posture (e.g., to a crouched posture), which makes evacuation difficult, i.e., the danger level increases rapidly. Therefore, the smaller the value of the smoke layer height Z _a , the higher the danger level. FIG. 5 illustrates specific values of the smoke layer height and the smoke density value, and illustrates the spatial danger level calculated in the relationship between the smoke layer height Z _a and the smoke density value C _s . FIG. 6 also illustrates the relationship between the smoke layer height Z _a and the smoke density value C _s as a graph. In general, while the smoke layer height Z _a is higher than 1.8 m (reference height) corresponding to the height of a human, the spatial danger level is calculated not to be very high (0.1 in FIG. 5). Then, when the smoke layer height Z _a reaches 1.8 m, the spatial danger level is calculated to rise rapidly (0.6 at Z _a = 1.8 m, and 1.0 at Z _a = 1.5 m in FIG. 5). In order to reflect this, as shown in FIG. 6, the spatial danger value is set to increase with respect to the height Z _a of the smoke layer as a linear function while the height Z _a of the smoke layer is higher than 1.8 m, and when the height Z _a of the smoke layer is lower than 1.8 m, the spatial danger value is set to increase with respect to the height Z _a of the smoke layer as an exponential function. In this way, in this example, the spatial danger value is expressed by a function related to the height Z _a of the smoke layer. Note that the above function showing the relationship between the spatial danger value and the height Z _a of the smoke layer is only an example, and the spatial danger value may increase with a linear function over the entire range of the height _Z _a of the smoke layer as Z _a decreases, or may increase with an exponential function over the entire range of the height Z a of the smoke layer as Z _a decreases. By considering the height Z _a of the smoke layer, the calculation of the spatial danger value can be more adapted to the actual danger level. The height Z _a of the smoke layer may be obtained, for example, as a detection result from a plurality of smoke density sensors installed in the vertical direction of the space, depending on the height to which smoke of a predetermined density or higher has reached, or may be calculated by estimation from the smoke density value detected by a smoke density sensor installed on the ceiling and the elapsed time since the start of the fire.

In the example in Figure 6, the following functions were used in the linear function domain.

Space risk value r ₁ =0.6-0.5×(1.8-Z _a )×(-0.043×(1/C _s )+1.11)/(1.8-H)

In the example in Figure 6, the following functions were used in the exponential domain:

Space danger value r ₁ =(3.1×(Z _a ^(−2.8)))×(−0.043×(1/C _s )+1.11)

Note that the standard height of 1.8 m is just an example and may be changed as appropriate to suit the average height of facility users or the height of children who are at higher risk.

Returning to FIG. 3, after the spatial danger value is calculated, the determination unit 12 determines the optimal evacuation route (S103). First, the determination unit 12 obtains the calculated spatial danger value. Then, the spatial danger value is used to calculate the sum of the spatial danger value for each of the multiple evacuation routes across all routes. An example will be described with reference to FIG. 7. FIG. 7 is a diagram for explaining the determination of the optimal evacuation route in the embodiment. In FIG. 7, a certain floor in the facility is indicated by the outermost rectangle, and hatched areas indicate impassable spaces (rooms, storage spaces, etc.). The symbols S1 to S16 each indicate a sensor. The floor has exits at the end of the lower part of the paper and on both the left and right sides of the paper, and an evacuation route is presented in which evacuation begins at the position of sensor S1 and heads toward one of the exits. A fire has occurred near sensor S4. The spatial danger values based on the detection results of each sensor are as follows:

Near sensor S1: 0.020
Near sensor S2: 0.025
Near sensor S3: 0.200
Near sensor S4: 2.000
Near sensor S5: 0.020
Near sensor S6: 0.020
Near sensor S7: 0.030
Near sensor S8: 0.500
Near sensor S9: 0.015
Near sensor S10: 0.020
Near sensor S11: 0.025
Near sensor S12: 0.020
Near sensor S13: 0.005
Near sensor S14: 0.015
Near sensor S15: 0.020
Near sensor S16: 0.010

For example, the evacuation route indicated by the solid arrow in FIG. 7 passes near sensors S1, S2, S6, S7, S11, S15, and S16. Therefore, the sum of the spatial danger values is 0.150. On the other hand, the evacuation route indicated by the dashed arrow in FIG. 7 passes near sensors S1, S2, S6, S5, S9, S10, S11, S15, S14, and S13. Therefore, the sum of the spatial danger values is 0.185. At first glance, the evacuation route indicated by the dashed arrow, which selects the branch farthest from the sensor S4, the source of the fire, seems to be the safest evacuation route, but in reality, there are many spaces that must be passed through before reaching the exit, and the sum of the spatial danger values is accordingly large. In reality, it is clear that evacuating via the evacuation route indicated by the solid arrow has a lower overall danger level, even if it means getting closer to the sensor S4.

In this way, in this example, by comparing the sum of spatial risk values across all evacuation routes, it is possible to select a more appropriate evacuation route and support a safer evacuation.

Returning to FIG. 3, after determining the optimal evacuation route, the presentation unit 13 presents the evacuation route (S104). The presentation unit 13 obtains information about the evacuation route determined to be the optimal evacuation route, and generates an image for presenting the evacuation route by overlaying it on the floor map. The image is then output to the guidance UI 22 and displayed to present the evacuation route. An example is shown in FIG. 8. FIG. 8 is a diagram showing an example of the presentation of an evacuation route in the embodiment. FIG. 8 shows the appearance of the guidance UI 22 and an image displayed on the screen. As shown in FIG. 8, in this example, along with the evacuation route overlaid on the floor map, the time of the fire outbreak, information identifying the location of the fire outbreak, an image of the current location of the fire outbreak, the number of victims left behind on the floor, and an inquiry button for inquiring of the floor manager are shown. For this reason, a configuration for detecting the outbreak of a fire itself, taking an image, counting the number of victims, registering the floor manager, and forming a line for communication may be provided.

[Effects, etc.]
As described above, the evacuation guidance presentation system 10 of the first aspect is an evacuation guidance presentation system 10 that provides evacuation guidance by presenting evacuation routes in a facility, and includes a calculation unit 11 that acquires detection results from each of a plurality of sensors 21 provided in a plurality of unit spaces that virtually divide the facility and calculates a spatial risk value for each of the plurality of unit spaces from the acquired detection results, a determination unit 12 that determines an optimal evacuation route, which is the evacuation route among the plurality of evacuation routes in the facility that has the smallest sum of the spatial risk values of one or more unit spaces passed through on the evacuation route, and a presentation unit 13 that causes the evacuation route determined as the optimal evacuation route by the determination unit 12 to be presented.

In this way, from among several candidate evacuation routes, it is possible to present an evacuation route that has the smallest sum of spatial danger values of one or more unit spaces passed through on the way to the exit, in terms of spatial danger values, i.e., in terms of the danger level for each unit space, based on the acquired detection results. In this way, it is possible to realize an evacuation guidance presentation system 10 that supports safer evacuation from the perspective of reducing the danger level of the entire evacuation route.

The evacuation guidance presentation system 10 according to the second aspect is the evacuation guidance presentation system 10 according to the first aspect, in which the spatial danger value is a function related to the height of the smoke layer.

This makes it possible to calculate the spatial danger value based on the height of the smoke layer from the detection results.

The evacuation guidance presentation system 10 according to the third aspect is the evacuation guidance presentation system 10 according to the first or second aspect, in which the sensor 21 is a detector.

This allows a detector to be used as the sensor 21.

The evacuation guidance presentation system 10 according to the fourth aspect is the evacuation guidance presentation system 10 according to the third aspect, in which the detector is a smoke detector that detects a smoke density value, and the calculation unit 11 calculates a spatial danger value from the smoke density value detected by the smoke detector.

Accordingly, a smoke detector that detects smoke concentration values can be used as the sensor 21.

The evacuation guidance presentation system 10 according to the fifth aspect is the evacuation guidance presentation system 10 according to the second aspect, in which the calculation unit 11 calculates a higher spatial danger value as the height of the smoke layer decreases over time when calculating the spatial danger value.

This allows the spatial danger value to be calculated higher according to the height of the smoke layer, which decreases over time, in line with reality.

The evacuation guidance presentation system 10 according to the sixth aspect is the evacuation guidance presentation system 10 according to any one of the first to fifth aspects, in which each of the multiple evacuation routes is an emergency staircase or a route leading to outdoors.

This allows disaster victims to evacuate to the emergency stairs or outside using the evacuation route provided.

The evacuation guidance presentation system 10 according to the seventh aspect is the evacuation guidance presentation system 10 according to any one of the first to sixth aspects, in which the presentation unit 13 presents the optimal evacuation route by at least one of sound, flashing light, and signage.

This allows evacuation routes to be presented using at least one of the following: audio, flashing lights, and signage.

The evacuation guidance presentation system 10 according to the eighth aspect is the evacuation guidance presentation system 10 according to the first aspect, in which the calculation unit 11a has one or more processors, and the one or more processors input the acquired detection results into a model generated using detection result data D1 representing the detection results of the multiple sensors 21 and correct answer data D2 representing correct answers for the spatial danger value for each of the detection results of the multiple sensors 21, and calculates the spatial danger value of each unit space by estimation.

As a result, the calculation unit 11a can be configured with one or more processors. The one or more processors can input the acquired detection results to a trained model 11b that has been generated in advance, and calculate the spatial risk value of each unit space by estimation.

The evacuation guidance presentation system 10 according to the ninth aspect is the evacuation guidance presentation system 10 according to the eighth aspect, in which the model 11b is a neural network model.

Accordingly, model 11b can be realized using a neural network model.

The evacuation guidance presentation method according to the tenth aspect is a computer-executed method for providing evacuation guidance by presenting evacuation routes in a facility, which obtains detection results from each of a plurality of sensors 21 provided in a plurality of unit spaces that virtually divide the facility, calculates a spatial danger value for each of the unit spaces from the obtained detection results, determines an optimal evacuation route among the plurality of evacuation routes in the facility, which is the evacuation route that has the smallest sum of the spatial danger values of one or more unit spaces passed through on the evacuation route, and presents the evacuation route determined to be the optimal evacuation route.

This provides the same effect as the evacuation guidance presentation system 10.

The evacuation guidance presentation method according to the 11th aspect is the evacuation guidance presentation method according to the 10th aspect, in which the spatial danger value is calculated by inputting the acquired detection results into a model 11b generated using detection result data D1 representing the detection results of a large number of sensors 21 and correct answer data D2 representing the correct value of the spatial danger value for each of the detection results of the large number of sensors 21, and calculating the spatial danger value of each unit space by estimation.

This provides the same effect as the evacuation guidance presentation system 10 described in the eighth aspect.

The program according to the twelfth aspect is a program for causing a computer to execute the evacuation guidance presentation method according to the tenth or eleventh aspect.

This makes it possible to achieve the same effect as the evacuation guidance presentation system 10 using a computer.

The disaster prevention system according to the thirteenth aspect includes the evacuation guidance presentation system 10 according to any one of the first to ninth aspects, and a plurality of sensors 21 installed in the facility.

This makes it possible to realize a disaster prevention system that has the same effect as the evacuation guidance presentation system 10.

(Other embodiments)
Although the embodiment has been described above, the present invention is not limited to the above embodiment.

For example, in the above embodiment, the evacuation guidance presentation system is realized by a plurality of devices, modules, etc. In this case, the components of the evacuation guidance presentation system described in the above embodiment may be distributed in any manner among the plurality of devices, modules, etc. Also, the evacuation guidance presentation system may be realized as a single device.

Furthermore, in the above embodiment, the processing performed by a specific processing unit may be executed by another processing unit. Furthermore, the order of multiple processes may be changed, and multiple processes may be executed in parallel.

Furthermore, in the above embodiment, each component may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or processor reading and executing a software program recorded on a recording medium such as a hard disk or semiconductor memory.

Furthermore, each component may be realized by hardware. Each component may be a circuit (or an integrated circuit). These circuits may form a single circuit as a whole, or each may be a separate circuit. Furthermore, each of these circuits may be a general-purpose circuit, or a dedicated circuit.

In addition, the general or specific aspects of the present invention may be realized as a system, an apparatus, a method, an integrated circuit, a computer program, or a computer-readable recording medium such as a CD-ROM. Also, the present invention may be realized as any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.

For example, the present invention may be realized as the disaster prevention system of the above embodiment. The present invention may also be realized as a method executed by at least a part of a processor of the evacuation guidance presentation system of the above embodiment. The present invention may also be realized as a program (computer program product) for causing a computer to execute such a method, or as a non-transitory computer-readable recording medium on which such a program is recorded.

In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art may conceive, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope of the spirit of the present invention.

10 Evacuation

guidance presentation system

11, 11a Calculation unit 11b Model 12 Determination unit 13 Presentation unit 21, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, S15, S16 Sensor 22 Guidance UI
50 Disaster prevention system D1 Detection result data D2 Correct answer data

Claims

An evacuation guidance presentation system that provides evacuation guidance by presenting evacuation routes in a facility,
a calculation unit that acquires detection results of a plurality of sensors provided in a plurality of unit spaces that virtually divide the facility, and calculates a spatial hazard value of each of the plurality of unit spaces from the acquired detection results;
a determination unit that determines an optimal evacuation route among a plurality of evacuation routes in the facility, the optimal evacuation route being an evacuation route that has the smallest sum of the spatial risk values of one or more unit spaces that the evacuation route passes through;
a presentation unit that presents the evacuation route determined as the optimal evacuation route by the determination unit.
The evacuation guidance presentation system according to claim 1 , wherein the spatial danger value is a function of the height of the smoke layer.
The evacuation guidance presentation system according to claim 1 , wherein the sensor is a detector.
The detector is a smoke detector that detects a smoke density value,
The evacuation guidance presentation system according to claim 3 , wherein the calculation unit calculates the spatial danger value from a smoke density value detected by the smoke detector.
The evacuation guidance presentation system according to claim 2 , wherein the calculation unit is configured to calculate the spatial danger value to be higher as the height of the smoke layer decreases over time when the spatial danger value is calculated.
The evacuation guidance presentation system according to claim 1 or 2, wherein each of the plurality of evacuation routes is a route leading to an emergency staircase or to outdoors.
The evacuation guidance presentation system according to claim 1 or 2, wherein the presentation unit presents the optimum evacuation route by at least one of a sound, a flashing light, and a signage.
The computing unit has one or more processors,
The evacuation guidance presentation system of claim 1, wherein the one or more processors input the acquired detection results into a model generated using detection result data representing the detection results of a large number of sensors and correct answer data representing correct values of the spatial danger value for each of the detection results of the large number of sensors, and calculate the spatial danger value for each of the unit spaces by estimation.
The evacuation guidance presentation system according to claim 8 , wherein the model is a neural network model.
1. An evacuation guidance presentation method executed by a computer for providing evacuation guidance by presenting an evacuation route in a facility, comprising:
acquiring detection results of a plurality of sensors provided in a plurality of unit spaces that virtually divide the facility,
Calculating a spatial risk value for each of the plurality of unit spaces from the acquired detection results;
determining an optimal evacuation route among a plurality of evacuation routes in the facility, the optimal evacuation route being the evacuation route that minimizes the sum of the spatial risk values of one or more unit spaces that are passed through on the evacuation route;
The evacuation route determined to be the optimum evacuation route is presented.
The evacuation guidance presentation method according to claim 10, wherein in calculating the spatial danger value, the acquired detection results are input into a model generated using detection result data representing the detection results of a large number of sensors and correct answer data representing correct values of the spatial danger value for each of the detection results of the large number of sensors, and the spatial danger value for each of the unit spaces is calculated by estimation.
A program for causing a computer to execute the evacuation guidance presentation method according to claim 10 or 11.
A disaster prevention system comprising: the evacuation guidance presentation system according to claim 1 or 2; and the plurality of sensors provided in the facility.