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

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

[Technical Field]

[0001] 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. [Background technology]

[0002] BACKGROUND ART Conventionally, there has been progress in the development of technology that supports the safe evacuation of disaster victims in the event of a disaster such as a fire by automatically generating evacuation routes (also called evacuation paths) (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-5292 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in conventional evacuation support technologies, the generated evacuation routes were sometimes inappropriate. The present invention provides an evacuation guidance presentation system and the like that generates and presents more appropriate evacuation routes, thereby supporting safer evacuation. [Means for solving the problem]

[0005] An 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, among a plurality of evacuation routes in the facility, which is the evacuation route that minimizes the sum of the spatial hazard values ​​of one or more of the unit spaces that are passed through on the evacuation route; and a presentation unit that presents the evacuation route determined as the optimal evacuation route by the determination unit.

[0006] An evacuation guidance presentation method according to one embodiment of the present invention is an evacuation guidance presentation method executed by a computer for providing evacuation guidance by presenting evacuation routes in a facility, the method acquiring detection results from each of a plurality of sensors installed in a plurality of unit spaces that virtually divide the facility, calculating a spatial hazard value for each of the unit spaces from the acquired detection results, determining an optimal evacuation route from among a plurality of evacuation routes in the facility, which is the evacuation route that has the smallest sum of the spatial hazard values ​​of one or more unit spaces that are passed through on the evacuation route, and presenting the evacuation route determined to be the optimal evacuation route.

[0007] 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.

[0008] A disaster prevention system according to one aspect of the present invention includes the evacuation guidance presentation system described above and the plurality of sensors provided in the facility. [Effects of the Invention]

[0009] According to the present invention, an evacuation guidance presentation system and the like that supports safer evacuation are provided. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a block diagram showing a functional configuration of an evacuation guidance presentation system according to an embodiment. [Figure 2] FIG. 2 is a block diagram showing a functional configuration of a calculation unit in another example of the embodiment. [Figure 3] FIG. 3 is a flowchart showing an example of the operation of the evacuation guidance presentation system according to the embodiment. [Figure 4] FIG. 4 is a diagram for explaining the height of the smoke layer in the embodiment. [Figure 5] FIG. 5 is a diagram illustrating the spatial risk level value according to the embodiment. [Figure 6] FIG. 6 is a diagram for explaining the relationship between the spatial danger level value and the height of the smoke layer in the embodiment. [Figure 7] FIG. 7 is a diagram for explaining the determination of the optimum evacuation route in the embodiment. [Figure 8] FIG. 8 is a diagram showing an example of presentation of an evacuation route according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, the embodiments will be 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 step order 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 not recited in independent claims will be described as optional components.

[0012] It should be noted that the drawings are schematic diagrams and are not necessarily strict illustrations. In addition, in the drawings, substantially the same components are denoted by the same reference numerals, and overlapping descriptions may be omitted or simplified.

[0013] (Embodiment) First, an overview 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 uses sensors installed in a facility and the detection results from the sensors to detect the occurrence of a disaster such as a fire, and uses the detection results to present an evacuation route from the current floor to an off-floor location and provide evacuation guidance. In other words, the disaster prevention system generates and outputs an appropriate evacuation route based on the detection results of the sensors. Herein, the disaster prevention system and the evacuation guidance presentation system of the present invention do not consider movement between floors. Movement between floors refers to movement from one floor to another, such as 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 an off-floor location, i.e., from the victim's current location within the floor to an emergency staircase or emergency exit (including an indoor exit to the same floor but another floor, or an exit to the outdoors). Hereinafter, emergency staircases and emergency exits will be collectively referred to as an exit from a floor or simply as an exit.

[0014] When generating an evacuation route, the evacuation guidance presentation system comprehensively considers the risk levels of the entire route from the current location to the exit and determines the evacuation route with the lowest risk level, i.e., the optimal evacuation route. For this reason, the evacuation guidance presentation system can present the route with the lowest risk by calculating the risk level of the entire route 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 and the system simply selects the branch with the lowest partial risk level to generate and output an evacuation route. This point will be explained in more detail later.

[0015] Fig. 1 is a block diagram showing the functional configuration of an evacuation guidance presentation system according to an embodiment. As shown in Fig. 1, an evacuation guidance presentation system 10 is incorporated into a disaster prevention system 50 as part of the disaster prevention system 50. The function of the evacuation guidance presentation system 10 is to acquire detection results from a sensor 21, generate evacuation routes from the detection results, and present the routes on a guidance UI 22. In other words, the evacuation guidance presentation system 10 is responsible for the information processing part of the disaster prevention system 50 for presenting evacuation routes.

[0016] 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 connected to an external guidance UI device and configured only with the evacuation guidance presentation system 10 and the sensor 21, or may be realized as a system connected to an external sensor device and configured only with the evacuation guidance presentation system 10 and the guidance UI 22.

[0017] 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 predetermined 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 seismic intensity during an earthquake, and illuminance detectors that quantify the visibility of evacuation routes. Hereinafter, the sensor 21 will be described as a detector that detects smoke density values.

[0018] Furthermore, 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., notify 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 a tablet terminal.

[0019] 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 unit as described above. The evacuation guidance presentation system 10 may be realized, for example, by a virtual cloud computer built on a network, or by an edge computer installed in a facility or another facility connected to the facility via a communication line.

[0020] The calculation unit 11 acquires the detection results from the sensor 21 and calculates a spatial risk value indicating the risk level of the space through which the evacuation route passes. More specifically, if the entire floor of a facility is virtually divided into multiple spaces, the evacuation route is configured so that the evacuation route passes through some of the spaces (hereinafter referred to as unit spaces) of the unit spaces. Conversely, the evacuation route includes multiple unit spaces through which the route passes. A sensor 21 is provided for each unit space so that it can detect each unit space, and multiple sensors 21 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 an area detectable by the sensor 21. There are no particular limitations on the size of the unit space or its position relative to the sensor 21. For example, the unit space may correspond to a detection zone defined by the Fire Service Act, or may correspond to a 30 m x 30 m area that corresponds to the detector installation standard for corridors and passageways defined by the Fire Service Act.

[0021] The spatial hazard value is calculated from the detection results detected by the sensors 21 in one unit space at that time, and is a numerical value indicating the degree of danger of a disaster victim passing through that unit space. Note that the spatial hazard value changes from moment to moment, and therefore may be calculated as an estimate of the time (i.e., future) when a disaster victim may pass through, for example, using the spatial hazard value at that time and past spatial hazard values, etc. As described above, each unit space is individually equipped with a sensor 21, and the calculation unit 11 calculates a spatial hazard value for each of the multiple sensors 21. Note that a communication line is formed between the calculation unit 11 and the sensors 21 to exchange the detection results of the sensors 21. In addition to the calculation unit 11 and the sensors 21, other devices such as a transceiver and a gateway may be interposed in this communication line.

[0022] The calculation unit 11 calculates a spatial hazard level value from detection results acquired by algorithmic calculation, but may also calculate the spatial hazard level value from detection results acquired by inference applying machine learning. For example, FIG. 2 is a block diagram showing the functional configuration of a 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. The model 11b is generated in advance by machine learning using detection result data D1 representing detection results detected by a large number of sensors 21 and correct answer data D2 representing correct values ​​of the spatial hazard level value for each of the detection results of the large number of sensors. As a result, when the acquired detection results (here, smoke concentration values) are input to the model 11b, an estimated value of the spatial hazard level value is obtained as an output. The calculation unit 11a may calculate the spatial hazard level value by estimation using such model 11b.

[0023] Returning to Fig. 1, the determination unit 12 determines an optimal evacuation route that is the most suitable evacuation route from among multiple evacuation routes using the spatial risk values ​​calculated by the calculation unit 11. Determining the optimal evacuation route means selecting, from among multiple evacuation routes, an evacuation route that minimizes the 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.

[0024] 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 of presentation of the evacuation route. The presentation unit 13 obtains information about the evacuation route determined to be the optimal evacuation route, overlays it on a floor map stored in advance (stored in a storage unit, etc.), and generates an image. The presentation unit 13 then outputs the generated image and displays it 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.

[0025] Next, the operation of the disaster prevention system 50, particularly 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.

[0026] First, the sensor 21 constantly senses a smoke density value and transmits the smoke density value to the calculation unit 11. The calculation unit 11 acquires the smoke density value as a detection result (S101), and calculates a 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.

[0027] In this example, the height of the smoke layer, which takes into account the time elapsed since the fire outbreak, is used to calculate the spatial danger value along with the smoke concentration value. Here, the height of the smoke layer is explained using Figure 4. Figure 4 shows the scene of a fire and victims trying to evacuate from there. This space has a spatial height of H. Space height is the distance from the floor to the ceiling. In contrast, smoke is generated by a fire, and the smoke fills the space from the top (ceiling side) onwards. In other words, a smoke layer (shown by dotted hatching) is formed from the ceiling side. Smoke layer height Z a is the distance from the floor to the bottom of the smoke layer. The sensor 21 for detecting the smoke density value is provided on the ceiling, and the smoke density value C at the space height H is s(H) The bottom of the smoke layer (height Z of the smoke layer) a ) smoke density value at C s(Za) and always C s(H) >C s(Za) The following relationship is established.

[0028] Smoke layer height Z aWhen the smoke layer reaches the height of the evacuees' faces, the visibility is obstructed and the possibility of inhaling smoke increases, and they have to change their posture (for example, to a crouched position), which makes evacuation difficult, i.e., the danger level increases rapidly. a The smaller the value, the higher the risk. Figure 5 shows specific values ​​for the height of the smoke layer and the smoke density value. a and smoke density value C s In addition, Fig. 6 shows an example of the spatial risk value calculated in relation to the height of the smoke layer Z a and smoke density value C s The graph shows the relationship between the height of the smoke layer and the reference height of the smoke layer. a While the height Z of the smoke layer is high, the spatial danger value is calculated not to be too high (0.1 in Figure 5). a When the distance reaches 1.8 m, the spatial risk value is calculated to rise sharply (in Figure 5, Z a = 0.6 at 1.8m, Z a (=1.5m = 1.0). To reflect this, the smoke layer height Z a While the height of the smoke layer Z is higher than 1.8 m, a The spatial danger value increases linearly with respect to the height of the smoke layer Z a When the height of the smoke layer Z becomes lower than 1.8m, a In this example, the spatial danger value is set to increase exponentially with respect to the height Z of the smoke layer. a It is expressed by a function related to the spatial danger value and the height of the smoke layer Z a The function showing the relationship between the height of the smoke layer and Z a A linear function is applied to the entire range. a The lower the value, the higher the spatial danger value. a Z exponentially over the entire range a The lower the value, the greater the spatial danger value. a By taking this into consideration, the calculation of the spatial danger level can be made more suitable to the actual danger level. aFor example, the value may be obtained as a detection result from multiple smoke concentration sensors installed vertically within a space, depending on the height to which smoke of a predetermined concentration or higher has reached, or may be calculated by estimation from the smoke concentration value detected by a smoke concentration sensor installed on the ceiling and the elapsed time since the fire started.

[0029] In the example of FIG. 6, the following functions were used in the linear function domain:

[0030] Spatial risk value r1 = 0.6 - 0.5 × (1.8 - Z a )×(-0.043×(1 / C s )+1.11) / (1.8-H)

[0031] In the example of FIG. 6, the following functions were used in the exponential domain:

[0032] Spatial risk value r1 = (3.1 × (Z a ^(-2.8)))×(-0.043×(1 / C s )+1.11)

[0033] The reference height of 1.8 m is an example and may be changed as appropriate to suit the average height of facility users or the height of children at higher risk.

[0034] 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 acquires the calculated spatial danger value. Then, using the spatial danger value, the determination unit 12 calculates the sum of the spatial danger values ​​for all routes for each of a plurality of evacuation 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 (such as living rooms and storage spaces). Furthermore, symbols S1 to S16 each indicate sensors. The floor has exits at the lower end and on both the left and right sides of the page, 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 broken out near sensor S4. The spatial danger values ​​based on the detection results of each sensor are as follows:

[0035] 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

[0036] For example, the evacuation route indicated by the solid arrows in Figure 7 passes near sensors S1, S2, S6, S7, S11, S15, and S16. Therefore, the sum of the spatial risk values ​​is 0.150. On the other hand, the evacuation route indicated by the dashed arrows in Figure 7 passes near sensors S1, S2, S6, S5, S9, S10, S11, S15, S14, and S13. Therefore, the sum of the spatial risk values ​​is 0.185. At first glance, the evacuation route indicated by the dashed arrows, which selects the branch farthest from the sensor S4 where the fire originated, appears to be the safest evacuation route. However, in reality, there are many spaces that must be traversed before reaching the exit, resulting in a correspondingly larger sum of the spatial risk values. In reality, it is clear that evacuating via the evacuation route indicated by the solid arrows has a lower overall risk, even if it means getting closer to sensor S4.

[0037] 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.

[0038] Returning to FIG. 3 , after determining the optimal evacuation route, the presentation unit 13 presents the evacuation route (S104). The presentation unit 13 acquires 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 a floor map. The image is then output to and displayed on the guidance UI 22, thereby presenting the evacuation route. An example is shown in FIG. 8 . FIG. 8 is a diagram showing an example of presentation of an evacuation route in an 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, in addition to 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, the number of victims left behind on the floor, and an inquiry button for inquiring about the floor manager are displayed. For this reason, a configuration for detecting the occurrence of a fire itself, capturing an image, counting the number of victims, registering the floor manager, and establishing a communication line may be provided.

[0039] [Effects, etc.] As described above, the evacuation guidance presentation system 10 according to the first embodiment 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 each of a plurality of unit spaces that virtually divides the facility, and calculates a spatial hazard 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 a plurality of evacuation routes in the facility that has the smallest sum of the spatial hazard values ​​of one or more unit spaces that the evacuation route passes through; and a presentation unit 13 that presents the evacuation route determined as the optimal evacuation route by the determination unit 12.

[0040] According to this, 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 value, i.e., the danger level of 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.

[0041] Moreover, the evacuation guidance presentation system 10 according to a second aspect is the evacuation guidance presentation system 10 according to the first aspect, in which the spatial danger level value is a function related to the height of the smoke layer.

[0042] This allows a spatial danger value to be calculated based on the height of the smoke layer from the detection results.

[0043] Moreover, the evacuation guidance presentation system 10 according to a third aspect is the evacuation guidance presentation system 10 according to the first or second aspect, in which the sensor 21 is a detector.

[0044] According to this, a detector can be used as the sensor 21.

[0045] Furthermore, 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 hazard value from the smoke density value detected by the smoke detector.

[0046] According to this, the sensor 21 can be a smoke detector that senses a smoke density value.

[0047] Furthermore, the evacuation guidance presentation system 10 according to the fifth aspect is the evacuation guidance presentation system 10 described in the second aspect, in which the calculation unit 11, when calculating the spatial danger value, calculates a higher spatial danger value as the height of the smoke layer decreases over time.

[0048] This allows the spatial danger level to be calculated higher in accordance with the height of the smoke layer, which decreases over time, in line with reality.

[0049] Moreover, the evacuation guidance presentation system 10 according to a sixth aspect is the evacuation guidance presentation system 10 according to any one of the first to fifth aspects, in which each of the plurality of evacuation routes is a route leading to an emergency staircase or to the outdoors.

[0050] This allows disaster victims to evacuate to the emergency stairs or outside using the evacuation route that is presented.

[0051] Furthermore, the evacuation guidance presentation system 10 according to a 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.

[0052] This allows evacuation routes to be presented using at least one of the following methods: audio, flashing lights, and signage.

[0053] Furthermore, the evacuation guidance presentation system 10 according to the eighth aspect is the evacuation guidance presentation system 10 described in 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 a large number of sensors 21 and correct answer data D2 representing correct values ​​of the spatial danger level values ​​for each of the detection results of the large number of sensors 21, and calculates by estimation the spatial danger level values ​​of each unit space.

[0054] This allows the calculation unit 11a to be configured with one or more processors. The one or more processors can input the acquired detection results to the trained model 11b generated in advance and calculate the spatial risk value of each unit space by estimation.

[0055] Moreover, the evacuation guidance presentation system 10 according to a ninth aspect is the evacuation guidance presentation system 10 according to the eighth aspect, in which the model 11b is a neural network model.

[0056] According to this, model 11b can be realized by a neural network model.

[0057] In addition, the evacuation guidance presentation method according to the tenth aspect is an evacuation guidance presentation method executed by a computer for providing evacuation guidance by presenting evacuation routes in a facility, which method acquires detection results from each of a plurality of sensors 21 installed in a plurality of unit spaces that virtually divide the facility, calculates a spatial hazard value for each of the plurality of unit spaces from the acquired detection results, determines an optimal evacuation route from among the plurality of evacuation routes in the facility, which is the evacuation route that has the smallest sum of the spatial hazard values ​​of one or more unit spaces that are passed through on the evacuation route, and presents the evacuation route determined to be the optimal evacuation route.

[0058] This provides the same effect as the evacuation guidance presentation system 10.

[0059] Furthermore, the evacuation guidance presentation method according to the eleventh aspect is the evacuation guidance presentation method according to the tenth aspect, in which, in calculating the spatial hazard value, the acquired detection results are input 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 hazard value for each of the detection results of the large number of sensors 21, and the spatial hazard value of each unit space is calculated by estimation.

[0060] This provides the same effects as the evacuation guidance presentation system 10 described in the eighth aspect.

[0061] A program according to a twelfth aspect is a program for causing a computer to execute the evacuation guidance presentation method according to the tenth or eleventh aspect.

[0062] This makes it possible to achieve the same effect as the evacuation guidance presentation system 10 using a computer.

[0063] A disaster prevention system according to a 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 provided in a facility.

[0064] This makes it possible to realize a disaster prevention system that has the same effect as the evacuation guidance presentation system 10.

[0065] (Other embodiments) Although the embodiments have been described above, the present invention is not limited to the above-described embodiments.

[0066] For example, in the above-described 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-described embodiment may be distributed in any manner among the plurality of devices, modules, etc. Furthermore, the evacuation guidance presentation system may be realized as a single device.

[0067] In the above-described embodiment, the processing performed by a specific processing unit may be performed by another processing unit. The order of multiple processing operations may be changed, or multiple processing operations may be performed in parallel.

[0068] In the above-described embodiments, each component may be realized by executing a software program suitable for that component, or 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.

[0069] Furthermore, each component may be realized by hardware. Each component may be a circuit (or 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.

[0070] Furthermore, 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, or as any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.

[0071] For example, the present invention may be realized as the disaster prevention system of the above-described embodiment. Furthermore, the present invention may be realized as a method executed by at least a part of a processor of the evacuation guidance presentation system of the above-described embodiment. The present invention may be realized as a program (computer program product) for causing a computer to execute such a method, or as a computer-readable non-transitory recording medium on which such a program is recorded.

[0072] In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art would think of, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope of the present invention. [Explanation of symbols]

[0073] 10 Evacuation guidance display system 11, 11a Arithmetic section 11b model 12 Judgment section 13 Presentation part 21, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, S15, S16 sensors 22 Guidance UI 50 Disaster Prevention System D1 Detection result data D2 Correct answer data

Claims

1. An evacuation guidance presentation system that provides evacuation guidance by presenting evacuation routes in a facility, a calculation unit that acquires detection results from a plurality of sensors respectively provided in a plurality of unit spaces that virtually divide the facility, and calculates a spatial hazard level value for 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, which is an evacuation route that minimizes the 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 optimum evacuation route by the determination unit, The spatial danger value is a continuous function of the height of the smoke layer. Evacuation guidance presentation system.

2. The sensor is a detector. The evacuation guidance presentation system according to claim 1 .

3. The detector is a smoke detector that detects a smoke density value, The calculation unit calculates the spatial risk value from the smoke density value detected by the smoke detector. The evacuation guidance presentation system according to claim 2 .

4. When calculating the spatial danger value, the calculation unit calculates the spatial danger value to be higher as the height of the smoke layer decreases over time. The evacuation guidance presentation system according to claim 1 .

5. Each of the plurality of evacuation routes is a route leading to an emergency staircase or to the outdoors. The evacuation guidance presentation system according to claim 1 .

6. The presentation unit presents the optimum evacuation route by at least one of sound, flashing light, and signage. The evacuation guidance presentation system according to claim 1 .

7. the computing unit has one or more processors, 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 risk level values ​​for each of the detection results of the large number of sensors, and calculate the spatial risk level values ​​of each of the unit spaces by estimation. The evacuation guidance presentation system according to claim 1 .

8. The model is a neural network model The evacuation guidance presentation system according to claim 7 .

9. 1. An evacuation guidance presentation method executed by a computer for providing evacuation guidance by presenting evacuation routes in a facility, comprising: acquiring detection results from a plurality of sensors respectively 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; presenting the evacuation route determined to be the optimal evacuation route; The spatial danger value is a continuous function of the height of the smoke layer. Evacuation guidance presentation method.

10. In calculating the spatial risk value, the acquired detection results are input to 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 risk value for each of the detection results of the large number of sensors, and the spatial risk value for each of the unit spaces is calculated by estimation. The evacuation guidance presentation method according to claim 9 .

11. A method for causing a computer to execute the evacuation guidance presentation method according to claim 9 or 10. program.

12. an evacuation guidance presentation system according to claim 1 and the plurality of sensors provided in the facility; Disaster prevention system.

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