Evacuation information display device and evacuation information display method

Abstract

To provide an evacuation information presenting device and an evacuation information presentation method that present evacuation information such as evacuation destination information and evacuation routes that facilitate evacuation life for evacuees and persons requiring evacuation support.SOLUTION: An evacuation information presenting device for presenting evacuation information to evacuees in the event of a disaster includes: an information acquisition unit that acquires user information and disaster information; a current location risk calculation unit that calculates a risk of disasters at a current location; a candidate evacuation site selection unit that selects candidate evacuation sites close to the current location from the list of evacuation sites and non-designated candidate evacuation sites that can be voluntarily added, using the user information and location information; a candidate evacuation site risk calculation unit that calculates the disaster risk of the candidate evacuation sites on the basis of disaster information, hazard maps, and a route and a distance from the current location to the candidate evacuation sites; an acquaintance estimation unit that estimates the number of acquaintances of evacuees at the candidate evacuation sites; and a candidate evacuation site evaluation unit that evaluates candidate evacuation sites on the basis of the risk of the current location, the risk of the candidate evacuation sites, and the number of the candidate evacuation sites and the acquaintances.SELECTED DRAWING: Figure 15

Description

Technical Field

[0001] The present invention relates to an evacuation information presentation device and an evacuation information presentation method for presenting evacuation information to evacuees during a disaster.

Background Art

[0002] In recent years, floods and landslides caused by heavy rain and the like have been increasing. In addition, other natural disasters such as earthquakes, tsunamis, and volcanic eruptions are also expected to occur. Therefore, many local governments have created hazard maps and set evacuation shelters and evacuation routes in advance. Here, when not all residents can enter the designated evacuation shelters such as elementary and junior high schools and community centers designated by the government, or when there is an increasing tendency to avoid crowded designated evacuation shelters due to the recent COVID-19 pandemic, the guidelines regarding evacuation information have been revised. In the revised guidelines, homes (vertical evacuation, horizontal evacuation), the homes of family members, relatives, and acquaintances, hotels, inns, etc. are also added as evacuation destinations, and it is shown that individuals should judge for themselves what is safe.

[0003] As a prior art document related to this technical field, there is Patent Document 1. In Patent Document 1, for the purpose of more accurately evaluating the possibility of human damage caused by a disaster, the area is divided, and for each section and time, vulnerability is calculated based on meteorological information, population, geography, etc., and a risk assessment method showing the possibility of human damage is described.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Patent Document 1 describes how to assess the risks of evacuation destinations and select safe ones, but it has the problem of not knowing which evacuation destinations are suitable for evacuees and those requiring assistance. In other words, during a disaster, it is expected that the number of evacuees seeking refuge in undesignated shelters (self-established shelters, cars) will increase due to the tendency to avoid crowded designated shelters. In addition, those requiring assistance (the elderly, people with disabilities, infants, pregnant women, foreigners, etc.) may find it difficult to live in designated shelters, and some may not evacuate to designated shelters or return home even if they do, potentially increasing their disaster risk. Thus, Patent Document 1 does not consider the problem of finding evacuation destinations that are suitable for evacuees and those requiring assistance.

[0006] Therefore, the present invention aims to provide an evacuation information display device and an evacuation information display method that present evacuation information such as evacuation destinations and evacuation routes that make it easier for evacuees and those requiring evacuation assistance to live in evacuation centers. [Means for solving the problem]

[0007] One example of the present invention is an evacuation information display device that presents evacuation information to evacuees in the event of a disaster, comprising: an information acquisition unit that acquires user information and disaster information; a current location risk calculation unit that calculates the disaster risk of the current location; an evacuation destination candidate selection unit that uses user information and location information to select an evacuation destination candidate that is close to the current location from a list of evacuation destinations and an optional undesignated evacuation destination candidate that can be added voluntarily; an evacuation destination candidate risk calculation unit that calculates the disaster risk of an evacuation destination candidate from disaster information, a hazard map, and the route and distance from the current location to the evacuation destination candidate; an acquaintance estimation unit that estimates the number of acquaintances of evacuees at the evacuation destination candidate; and an evacuation destination candidate evaluation unit that evaluates the evacuation destination candidate based on the risk of the current location, the risk of the evacuation destination candidate, the evacuation destination candidate, and the number of acquaintances. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide an evacuation information display device and an evacuation information display method that present evacuation information to make it easier for evacuees and those requiring evacuation assistance to live in evacuation centers. [Brief explanation of the drawing]

[0009] [Figure 1] This is an overall configuration diagram of the evacuation information display system in the embodiment. [Figure 2] This is a block diagram of the functional configuration of the evacuation information display device in the embodiment. [Figure 3] This is the user information stored in the user information storage unit in the embodiment. [Figure 4] This is the initial registration screen for the user, their family, and acquaintances in the example. [Figure 5] This is the evacuee information input screen in the example. [Figure 6] This is the risk information stored in the risk information storage unit in the embodiment. [Figure 7] This is the evacuation destination list information stored in the evacuation destination list storage unit in the embodiment. [Figure 8] This is the evacuation destination candidate information stored in the evacuation destination candidate memory unit in the embodiment. [Figure 9] This is the information of the regular visit destinations of persons requiring evacuation assistance, which is stored in the memory unit for the regular visit destinations of persons requiring evacuation assistance in the embodiment. [Figure 10] This is the visit history information of the evacuee stored in the visit history memory unit of the embodiment. [Figure 11] Figure 2 is a detailed functional block diagram of the risk calculation unit for the current location. [Figure 12] Figure 2 is a detailed functional block diagram of the risk calculation unit for potential evacuation destinations. [Figure 13] Figure 2 is a detailed functional block diagram of the acquaintance estimation unit. [Figure 14] Figure 2 is a detailed functional block diagram of the evacuation assistance estimation unit. [Figure 15] This is an overall flowchart of the evacuation information presentation process of the evacuation information presentation device in the embodiment. [Figure 16] This is a flowchart detailing the process for calculating the risk at the current location in the example. [Figure 17]It is a detailed processing flowchart of risk calculation in an embodiment. [Figure 18] It is a detailed processing flowchart of the selection of evacuation destination candidates in an embodiment. [Figure 19] It is a detailed processing flowchart of risk calculation for evacuation destination candidates in an embodiment. [Figure 20] It is a detailed processing flowchart of risk calculation for a route in an embodiment. [Figure 21] It is a diagram for explaining the process of risk calculation for a route in an embodiment. [Figure 22] It is a detailed processing flowchart of acquaintance estimation in an embodiment. [Figure 23] It is a detailed processing flowchart of estimation of evacuation support required persons in an embodiment. [Figure 24] It is a detailed processing flowchart of evaluation of evacuation destination candidates in an embodiment. [Figure 25] It is a detailed processing flowchart of ranking processing of evacuation destination candidates in an embodiment. [Figure 26] It is a display screen of evacuation destination candidates in an embodiment.

Mode for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment

[0011] FIG. 1 is an overall configuration diagram of an evacuation information presentation system in this embodiment. In FIG. 1, 1 is an evacuation information presentation device, which has a CPU, a storage unit, and a database, which are general information processing devices, and the CPU interprets and executes an operation program and an application program for realizing each function, and realizes the functions of the evacuation information presentation device described later through software processing. 2 is a communication network composed of the Internet or the like.

[0012] 3 refers to the source of various types of information, such as servers and the cloud. Specifically, the source of various types of information 3 consists of weather information 31 operated by the Japan Meteorological Agency, disaster information 32 and evacuation facility information 33 operated by municipalities, hazard maps 34 operated by the Ministry of Land, Infrastructure, Transport and Tourism, personal location information 35 identified and stored by individuals' smartphones, car navigation systems, etc., ground elevation information 36 from the Geospatial Information Authority of Japan, road elevation information 37 from road companies, etc.

[0013] The evacuation information display device 1 displays evacuation information such as evacuation destinations and evacuation routes based on information from various information sources 3 via the communication network 2. 4 is a user terminal such as a smartphone, which inputs the evacuee's initial registration information, provides this information to the evacuation information display device 1 via the communication network 2, and stores the location information acquired by the user terminal 4 in the location information 35 at the information source 3 via the communication network 2. The user terminal 4 also obtains and displays evacuation information such as evacuation destinations and evacuation routes presented by the evacuation information display device 1 via the communication network 2.

[0014] Figure 2 is a block diagram of the functional configuration of the evacuation information display device in this embodiment. The evacuation information display device 1 has a processing unit 11 with a CPU, a storage unit 12 consisting of a storage unit, and an interface unit 13 such as a communication device for transmitting information to the outside, and these are connected by a data bus 5. Each storage unit of the storage unit 12 stores information from various information sources 3 and user terminals 4 via the interface unit 13.

[0015] The processing unit 11 is composed of functional blocks such as a user information acquisition unit 110, a location information acquisition unit 111, a disaster information acquisition unit 112, a current location risk calculation unit 113, an evacuation destination candidate selection unit 114, an evacuation destination candidate risk calculation unit 115, an acquaintance estimation unit 116, an evacuation assistance person estimation unit 117, an evacuation destination candidate evaluation unit 118, and an input / output unit 119. The memory unit 12 is composed of a user information memory unit 120, a disaster information memory unit 121, a hazard map memory unit 122, a risk information memory unit 123, an evacuation destination list memory unit 124, an evacuation destination candidate memory unit 125, an evacuee visit history memory unit 126, an evacuee assistance person's regularly visited destination memory unit 127, an elevation information memory unit 128, and a road map base memory unit 129.

[0016] Figure 3 shows user information 1201 stored in the user information storage unit 120. User information 1201 is created based on information from the initial registration screen 211 for the user and their family / acquaintances shown in Figure 4 and the evacuee information input screen 221 shown in Figure 5, as well as information calculated by the evacuation information presentation process in the evacuation information presentation device 1, which will be described later. Figure 4 is the input screen of the user terminal 4 for inputting initial registration information for the user and their family / acquaintances. The user enters their name, age, gender, and address via the user registration screen 2111 and the family / acquaintance registration screen 2112, respectively. The entered information is registered using the registration button 2113. Figure 5 is the input screen of the user terminal 4 for inputting evacuee information. In Figure 5, the input screen 2211 is used to input whether the evacuee is a person requiring evacuation assistance, i.e., a person with a disability, a pregnant woman, a foreigner, or other person who has difficulty evacuating alone, such as the elderly or infants. Input screen 2212 is used to enter information about people evacuating together, such as whether there are people evacuating together and whether those people qualify as people requiring evacuation assistance. Input screen 2213 is used to enter information about the current location, such as the number of floors in the building. This entered information is registered using the registration button 2214.

[0017] Figure 6 shows the risk information 1231 stored in the risk information storage unit 123. The risk information 1231 consists of evacuation information, current risks, forecasts, and future risk information, based on weather information 31 and disaster information 32 from various information sources 3.

[0018] Figure 7 shows the evacuation destination list information 1241 stored in the evacuation destination list storage unit 124. The evacuation destination list information 1241 is based on the evacuation facility information 33 from the information source 3 and consists of information such as ID, name, location information such as latitude and longitude, type of evacuation destination, capacity, and facility equipment.

[0019] Figure 8 shows the evacuation destination candidate information 1251 stored in the evacuation destination candidate memory unit 125. The evacuation destination candidate information 1251 consists of information such as ID, name, capacity, facilities and equipment, estimated number of people staying, evacuation destination risk, route risk, distance, family and acquaintances, potential acquaintances, and people requiring evacuation assistance. Of these, the ID, name, capacity, and facilities and equipment are extracted from the evacuation destination list information 1241 by the evacuation destination candidate selection unit 114.

[0020] Figure 9 shows the regular visit destination information 1271 for persons requiring evacuation assistance, which is stored in the regular visit destination memory unit 127. The regular visit destination information 1271 for persons requiring evacuation assistance is information about the regular visit destinations of persons requiring evacuation assistance that is stored in the user information 1201, and consists of facility name, location information, and information about persons requiring evacuation assistance.

[0021] Figure 10 shows the evacuee's visit history information 1261 stored in the evacuee's visit history memory unit 126. In other words, it is information about places frequently used by evacuees. The evacuee's visit history information 1261 consists of user information 1201, location information acquired by the location information acquisition unit 111, and information from the user terminal 4, etc., including name, current location, facility name, and its location information.

[0022] Figure 11 is a detailed functional block diagram of the current location risk calculation unit 113 in Figure 2. In Figure 11, the current location risk calculation unit 113 consists of a hazard map acquisition unit 1131, a risk calculation unit 1132, and a data processing unit 1133. The hazard map acquisition unit 1131 acquires hazard map information from a hazard map storage unit 122 that stores hazard map information 34 from various information suppliers 3 via the communication network 2. The risk calculation unit 1132 consists of a regional risk acquisition unit 11321, a hazard area risk color coding output unit 11322, and a risk determination unit 11323. The data processing unit 1133 stores the calculated current location risk and evacuation method in user information 1201. Detailed processing will be described later.

[0023] Figure 12 is a detailed functional block diagram of the risk calculation unit 115 for evacuation destination candidates in Figure 2. In Figure 12, the risk calculation unit 115 for evacuation destination candidates consists of a hazard map acquisition unit 1151, a risk calculation unit 1152, a route and distance calculation unit 1153, a route risk calculation unit 1154, and a data display unit 1155. The hazard map acquisition unit 1151 and the risk calculation unit 1152 have the same functions as the hazard map acquisition unit 1131 and the risk calculation unit 1132 in Figure 11. The route and distance calculation unit 1153 calculates the route and distance from the current location to the evacuation destination candidate. The route risk calculation unit 1154 consists of an elevation acquisition unit 11541, a flood depth acquisition unit 11542, a road height calculation unit 11543, a flood determination unit 11544, a passability determination unit 11545, and a route risk determination unit 11546. The route risk calculation unit 1154 calculates the risk of the route to the candidate evacuation destination. The data processing unit 1155 stores the calculated risk, distance, and route risk of the candidate evacuation destination in the candidate evacuation destination information 1251. Detailed processing will be described later.

[0024] Figure 13 is a detailed functional block diagram of the acquaintance estimation unit 116 in Figure 2. In Figure 13, the acquaintance estimation unit 116 consists of a contact frequency determination unit 1161, a communication history determination unit 1162, a visit history determination unit 1163, an acquaintance candidate estimation unit 1164, and a data recognition unit 1166. The contact frequency determination unit 1161 extracts people with a high contact frequency, the communication history determination unit 1162 extracts people with a large communication history, the visit history determination unit 1163 extracts people whose frequently visited places match, and the acquaintance candidate estimation unit 1164 estimates people with a high contact frequency, a large communication history, and matching frequently visited places as acquaintance candidates. The data recognition unit 1165 stores the calculated number of acquaintance candidates for each evacuation destination in the evacuation destination candidate information 1251. Detailed processing will be described later.

[0025] Figure 14 is a detailed functional block diagram of the evacuation assistance person estimation unit 117 in Figure 2. In Figure 14, the evacuation assistance person estimation unit 117 consists of an evacuation assistance person determination unit 1171, a regular visit destination extraction unit 1172, a visit history acquisition unit 1173, a regular visit destination determination unit 1174, and a data processing unit 1175. The evacuation assistance person determination unit 1171 determines whether there is an evacuation assistance person among the user or their companions, the regular visit destination extraction unit 1172 acquires location information of the regular visit destinations of evacuation assistance persons, the visit history acquisition unit 1173 acquires the visit history of people at the evacuation destination candidates, and the regular visit destination determination unit 1174 determines whether the visit history matches the regular visit destinations of evacuation assistance persons, and those who match are designated as evacuation assistance person candidates. The data processing unit 1175 stores the number of evacuation assistance persons at the evacuation destinations in the evacuation destination candidate information 1251. Detailed processing will be described later.

[0026] Figure 15 is an overall flowchart of the evacuation information presentation process in the evacuation information presentation device 1. In Figure 15, first, in step S10, the user information acquisition unit 110 acquires user information from the user information 1201 stored in the user information storage unit 120. In step S11, the location information acquisition unit 111 acquires the current location information. For example, location information is acquired by the user terminal 4. Next, in step S12, the disaster information acquisition unit 112 acquires disaster information (evacuation information, weather information) from the disaster information storage unit 121. Next, in step S13, the risk of the current location is calculated.

[0027] Figure 16 is a detailed processing flowchart of the current location risk calculation S13, which is the processing performed by the current location risk calculation unit 113. In Figure 16, first, in step S131, the hazard map acquisition unit 1131 acquires the hazard map from the hazard map storage unit 122. Next, in step S132, the risk calculation unit 1132 calculates the risk of the current location.

[0028] Figure 17 is a detailed processing flowchart for the risk calculation S132. In Figure 17, first, in step S1321, the regional risk (current and future) is determined based on the risk information 1231 in Figure 6. Then, in step S1322, the risk of the hazard area on the hazard map (color-coded as maximum, large, medium, and small) is output to the screen. Then, in step S1323, it is determined whether the current location is within a hazard zone. If it is not within a hazard zone, the process proceeds to step S1326, where a flag indicating no risk is set and the process ends. If it is within a hazard zone, the process proceeds to step S1325, where a flag indicating risk is set and the process proceeds to step S1327. In step S1327, it is determined whether indoor evacuation is possible. If the information of the current location on the input screen 2213 shown in Figure 5 indicates outdoors, the process proceeds to No, and the process proceeds to the next step S1328, where an outdoor evacuation flag is set and the process ends. If the information of the current location indicates, for example, a three-story building, the process proceeds to Yes, and the process proceeds to step S1329, where an outdoor or indoor evacuation flag is set and the process ends.

[0029] Next, returning to Figure 16, in step S133, the data recognition unit 1133 stores the calculated risk of the current location and the evacuation method (outdoors or indoors) in the user information 1201, and the process of calculating the risk of the current location S13 is completed.

[0030] Next, returning to Figure 15, step S14 is used to select potential evacuation destinations. Figure 18 is a detailed flowchart of the evacuation destination selection process S14, and shows the processing in the evacuation destination selection unit 114. In Figure 18, first, in step S141, evacuation destinations close to the current location, for example, within a radius of 500m, are extracted from the evacuation destination list information 1241 shown in Figure 7. Next, in step S142, the extracted evacuation destinations are stored in the evacuation destination candidate information 1251 shown in Figure 8. Then, in step S143, based on the user information obtained in step S10, family and acquaintances' homes that are close to the current location and have been voluntarily opened are stored in the evacuation destination candidate information 1251 as undesignated evacuation destination candidates (voluntary evacuation destination candidates). In the example in Figure 8, this corresponds to the relative's home with ID H005.

[0031] Next, in step S144, the number of people present around the current location is obtained and stored in the candidate evacuation destination information 1251. For example, a park or other non-designated evacuation destination candidate that can be added voluntarily is obtained using a user terminal such as a smartphone. Next, in step S145, the average number of people present during normal times (not during a disaster) is obtained. Then, in step S146, it is determined whether the current estimated number of people present is higher than normal. If it is higher, it is determined that the location is functioning as an evacuation destination, and the process moves to step S147. In step S147, locations with more people than normal are stored in the candidate evacuation destination information 1251 as non-designated evacuation destination candidates. In the example in Figure 8, this corresponds to the park with ID H006. Then, the process moves to step S148. If, in step S146, the current estimated number of people present is lower than normal, it is determined that the location is unsuitable as a non-designated evacuation destination candidate, and the process moves to step S148.

[0032] In step S148, the estimated number of people staying at each evacuation site stored in the evacuation site candidate information 1251 is calculated, and in step S149, the estimated number of people staying at each evacuation site is stored in the evacuation site candidate information 1251, and the process of selecting evacuation site candidates is completed.

[0033] In other words, based on user information, location information, and a list of evacuation destinations, evacuation destination candidates that are close to the current location from among the pre-designated evacuation destination candidates and the undesignated evacuation destination candidates that can be added voluntarily (voluntary evacuation destination candidates) are stored in evacuation destination candidate information 1251 and an evacuation destination candidate is selected.

[0034] Next, returning to Figure 15, step S15 is used to calculate the risk of the evacuation site candidates. Figure 19 is a detailed flowchart of the S15 process for calculating the risk of evacuation site candidates, and shows the processing in the evacuation site candidate risk calculation unit 115. In Figure 19, first, in step S151, the hazard map acquisition unit 1131 acquires the hazard map from the hazard map storage unit 122. Next, in step S152, the risk is calculated. The details of the risk calculation S152 can be addressed by replacing the current location with the location of the evacuation site candidate and changing the determination of whether indoor evacuation is possible to outdoor evacuation in the process of the S132 process in Figure 17.

[0035] Next, in step S153, the route and distance calculation unit 1153 calculates the route and distance from the current location to the candidate evacuation destination. This is calculated by a user terminal such as a smartphone or car navigation system. Next, in step S154, the risk of the route is calculated.

[0036] While hazard maps and other sources publish predicted flood depths for routes from your current location to potential evacuation destinations, the flood depth is measured from the ground level. Therefore, roads that are higher than ground level, such as overpasses, may remain passable even during flooding, while roads that are lower than ground level, such as those underground, may be impassable. In other words, not all roads marked as risky on hazard maps are necessarily impassable. Hazard maps and road maps alone do not take into account the height of roads from the ground, making it impossible to determine whether a route is passable, i.e., the risk of the route. To address this, we calculate the difference in elevation between the road and the ground (the height of the road from the ground) using road and ground elevation data, and then compare this with the flood depth (depth of flooding from the ground) shown on the hazard map to calculate whether a road is passable, i.e., the risk of the route. Specifically, the elevation of the road and the elevation of the ground are both heights above sea level, while the flood depth shown on the hazard map is the height from the ground. Therefore, if the road elevation - ground elevation - flood depth >= 0, it is considered passable (no risk), and if <, it is considered impassable (risk exists).

[0037] Figure 20 is a detailed processing flowchart of the route risk calculation S154, which is the processing in the route risk calculation unit 1154. In Figure 20, first, in step S15401, the elevation of the ground is obtained from the elevation information storage unit 128, which stores the elevation information of the ground 36, by the elevation acquisition unit 11541. In step S15402, the elevation of the road is obtained from the road map base storage unit 129, which stores the elevation information of the road 37, by the elevation acquisition unit 11541. In step S15403, the flood depth of the hazard map is obtained from the hazard map storage unit 122, which stores the hazard map 34. Then, in step S15404, the height of the road from the ground, that is, the road elevation minus the ground elevation, is calculated by the road height calculation unit 11543.

[0038] Then, in step S15405, the flood determination unit 11544 determines whether the value of the road height from the ground minus the maximum flood depth, i.e., road elevation minus ground elevation minus maximum flood depth, is 0 or greater. Here, the elevations of the road and ground are defined by the average values ​​for each predetermined section. The flood depth used is the maximum flood depth within the predetermined section. As shown in Figure 21, the determination in step S15405 is made for each predetermined section ID (node). If it is 0 or greater, the process proceeds to step S15406 and the passability of the road section ID (node) is set to ○ (passable). If it is not 0 or greater, the process proceeds to step S15407 and the passability of the road section ID (node) is set to × (not passable). Then, in step S15408, the passability determination unit 11545 determines whether the section IDs at both ends of the road are passable or not. If yes, in step S15409, the section is made passable; if no, in step S15410, the section is made impassable. Then, in step S15411, the route risk determination unit 11546 determines whether all sections of the route from the current location to the destination are passable. If yes, in step S15412, a flag indicating no risk is set, and the process ends. If no, a flag indicating risk is set in step S15413, and the process proceeds to step S15414 to determine whether to change the route. If not, the process ends. If a change is made, the process proceeds to step S15415 to change the route, and the process returns to step S15401.

[0039] If the elevation of the road and ground is not an average value, the passability of the designated section may be determined by comparing the minimum height from the ground of the road within the designated section with the maximum flood depth.

[0040] Next, returning to Figure 19, in step S155, the data recognition unit 1155 stores the calculated risk, distance, and route risk of the evacuation destination candidate in the evacuation destination candidate information 1251, and the process of calculating the risk of the evacuation destination candidate ends.

[0041] Next, returning to Figure 15, step S16 is used to estimate acquaintances. Figure 22 is a detailed processing flowchart for acquaintance estimation S16, and shows the processing in the acquaintance estimation unit 116. In Figure 22, first, in step S161, location information of family and acquaintances obtained from user terminals such as smartphones and car navigation systems is acquired from user information 1201. Then, in step S162, the contact frequency determination unit 1161 extracts people who have a high frequency of contact with the evacuee. Then, in step S163, the communication history determination unit 1162 extracts people who have a lot of communication history with the evacuee. Furthermore, in step S164, the visit history determination unit 1163 extracts people whose frequently visited places match those of the evacuee. Then, in step S165, the acquaintance candidate estimation unit 1164 selects people who have a high frequency of contact with the evacuee, who have a lot of communication history with the evacuee, and whose frequently visited places match those of the evacuee as acquaintance candidates and acquires their location information. In step S166, the number of potential acquaintances at the evacuation destinations is tallied. In step S167, the data recognition unit 1165 stores the locations of family members and acquaintances obtained, as well as the number of potential acquaintances at each evacuation destination, into the evacuation destination candidate information 1251, thus ending the acquaintance estimation process.

[0042] In this way, by identifying individuals who frequently come into contact with evacuees, have a long history of communication with evacuees, and whose frequently visited places match those of evacuees, it is possible to provide evacuation destinations where evacuees can more easily adapt to life in an evacuation center by presenting them with a number of acquaintances.

[0043] Next, returning to Figure 15, step S17 is used to estimate persons requiring evacuation assistance. Figure 23 is a detailed processing flowchart for the estimation of persons requiring evacuation assistance S17, and shows the processing in the person requiring evacuation assistance estimation unit 117. In Figure 23, first, in step S171, the person requiring evacuation assistance determination unit 1171 determines whether there are persons requiring evacuation assistance among the users or their companions. If there are, the process proceeds to step S172, where it is determined whether the same person requiring evacuation assistance exists in the user history. If No, the process proceeds to step S178. In step S172, if Yes, the process proceeds to step S173, where the location information of the person with the same person requiring evacuation assistance is obtained. If No in step S172, the process proceeds to step S174, where the regular visit destination extraction unit 1172 obtains the location information of the regular visit destinations of persons requiring evacuation assistance (see Figure 9). Then, in step S175, the visit history acquisition unit 1173 obtains the visit history of evacuees at the evacuation destination candidates, and the process proceeds to step S178 (see Figure 10). Then, in step S176, the regular visit destination determination unit 1174 determines whether the visit history of evacuees matches the regular visit destinations of persons requiring evacuation assistance. If the answer is No, the process proceeds to step S178. If the answer is Yes, in step S177, the matching evacuees are designated as candidates for persons requiring evacuation assistance, their location information is acquired, and the process proceeds to step S178. In step S178, the number of persons requiring evacuation assistance at each evacuation destination is tallied, and in step S179, the data recognition unit 1175 stores the number of persons requiring evacuation assistance at each evacuation destination in the candidate evacuation destination information 1251.

[0044] In this way, by considering evacuees who frequently visit places often frequented by those requiring evacuation assistance as those requiring assistance, it becomes possible to present potential evacuation destinations that are popular with those requiring assistance, thereby providing evacuation destinations that are easier for them to live in.

[0045] Next, returning to Figure 15, the evacuation site candidates are evaluated in step S18. Figure 24 is a detailed processing flowchart of the evacuation site candidate evaluation S18, and shows the processing in the evacuation site candidate evaluation unit 118. In Figure 24, first, in step S181, the evacuation site candidates are ranked.

[0046] Figure 25 is a detailed flowchart of the ranking process S181 for evacuation destination candidates. In Figure 25, first, in step S18101, the evacuation destination candidates are sorted by distance. Next, in step S18102, evacuation destination candidates with no risk to the route are extracted, based on the risk calculation process for evacuation destination candidates in step S15 of Figure 15. Then, in step S18103, evacuation destination candidates where the estimated number of people staying, stored in the evacuation destination candidate information 1251, does not reach the maximum capacity are extracted. Then, in step S18104, it is determined whether there are people requiring assistance among the users or their companions. If yes, the process moves to step S18105, where it is determined whether there are people requiring evacuation assistance at the evacuation destination candidates. If yes, the process moves to step S18106, where the evacuation destination candidates are sorted by the number of evacuees requiring evacuation assistance, and the ranking process for evacuation destination candidates is completed.

[0047] If the answer in step S18105 is No, the process moves to step S18107, where evacuation destination candidate information 1251 is referenced to determine if there are facilities and equipment to accommodate evacuees requiring assistance. If the answer is Yes, the process moves to step S18108, where evacuation destination candidates with facilities and equipment are prioritized, and the ranking process for evacuation destination candidates is completed.

[0048] If the result in step S18104 is No, and if the result in step S18107 is No, proceed to step S18109, where evacuation destination candidate information 1251 is referenced to determine if there is information about family or acquaintances. If the result is Yes, proceed to step S18110, where evacuation destination candidates with family or acquaintances are given first priority, and the ranking process for evacuation destination candidates is completed. If the result in step S18109 is No, proceed to step S18111, where evacuation destination candidate information 1251 is referenced to determine if there is information about acquaintances. If the result is Yes, proceed to step S18112, where evacuation destination candidates are sorted by the number of acquaintances, and the ranking process for evacuation destination candidates is completed. If the result in step S18111 is No, the ranking process for evacuation destination candidates is completed as is.

[0049] In this way, the ranking process for evacuation destinations is performed by rearranging the candidate evacuation destinations in a predetermined order.

[0050] Next, returning to Figure 24, step S182 determines whether there is a risk at the current location based on the result of the risk calculation process at the current location in step S13 of Figure 15. If the answer in step S182 is No, proceed to step S183, make the current location the first candidate for evacuation destination, and proceed to step S184. If the answer in step S182 is Yes, proceed to step S184. In step S184, output or display screen output of the evacuation destination candidates is performed, and proceed to step 185. In step S185, the evacuee is notified whether there are any changes to the order of the evacuation destination candidates. If Yes, proceed to step S186, rearrange the evacuation destination candidates, and proceed to step S184. If the answer in step S185 is No, the evaluation process for evacuation destination candidates is terminated.

[0051] Figure 26 shows an example of the display screen output for evacuation destination candidates. In Figure 26, the evacuation destination candidate display screen 201 includes an evacuation destination candidate map screen 2011, a time setting button 2012, an evacuation destination candidate list 2013, and an evacuation destination candidate sorting button 2014. Specifically, the evacuation destination candidate map screen 2011 displays evacuation destination candidates, their routes to those evacuation destinations, and the risks associated with those routes on a map. The time setting button 2012 allows the user to select whether to calculate the risks of the evacuation destination candidates and routes at the present time or at a predetermined time, for example, 3 hours from now. The evacuation destination candidate list 2013 is a list of evacuation destination candidates sorted according to their evaluation process. The evacuation destination candidate sorting button 2014 allows the user to sort the evacuation destination candidate list 2013 according to an arbitrary priority.

[0052] This concludes the evacuation information presentation process shown in Figure 15.

[0053] Thus, according to this embodiment, by presenting evacuation destinations where there are many acquaintances, it is possible to prioritize presenting evacuation destinations that are easier for evacuees to live in. Here, if the number of acquaintances is unknown, people who have frequent contact with the evacuees, people with a long history of communication with the evacuees, and people whose frequently visited places match those of the evacuees are considered acquaintances.

[0054] Furthermore, if the evacuees are elderly, disabled, infants, pregnant women, foreigners, or other persons requiring assistance during evacuation, prioritizing evacuation destinations with a high concentration of such persons will allow for the presentation of evacuation destination options that are more suitable for those requiring assistance. In cases where the number of persons requiring assistance is unknown, individuals with a high frequency of visits to places frequently visited by persons requiring assistance will be considered to be persons requiring assistance.

[0055] Furthermore, the system calculates the disaster risk at the current location using user information, disaster information, hazard map data, and current location information. It also selects evacuation destinations by storing evacuation destinations close to the current location from pre-designated evacuation destinations and voluntarily added undesignated evacuation destinations (voluntary evacuation destinations) based on user information, location information, and a list of evacuation destinations. Additionally, by comparing the elevation difference between the road and the ground with the inundation depth shown on the hazard map, the system calculates whether the road from the current location to the evacuation destination is passable, i.e., the route risk. Finally, the system evaluates the evacuation destinations based on the risk at the current location, the risk at the evacuation destinations, the route risk, the capacity of the evacuation destinations, the facilities at the evacuation destinations, the presence of family and friends, the number of acquaintances, and the number of people requiring evacuation assistance.

[0056] This makes it possible to provide an evacuation information display device and method that present evacuation information such as potential evacuation destinations and evacuation routes that make it easier for evacuees and those requiring evacuation assistance to live in evacuation centers.

[0057] It should be noted that the present invention is not limited to the embodiments described above, and various modifications are included. For example, the embodiments described above are described in detail to make the present invention easier to understand, and are not necessarily limited to those having all the configurations described. For example, in the embodiments described above, it was explained that there is a user information acquisition unit, a location information acquisition unit, and a disaster information acquisition unit, but these may be combined into an information acquisition unit, and furthermore, a hazard map acquisition unit may also be included in the information acquisition unit. Also, in the evacuation information presentation process in Figure 15, it was explained that there is both estimation of acquaintances and estimation of persons requiring evacuation assistance, but for example, if it is considered as an evacuation information presentation process exclusively for persons requiring evacuation assistance, it may be just estimation of persons requiring evacuation assistance, or just one of the estimations may be used. [Explanation of Symbols]

[0058] 1: Evacuation information display device, 2: Communication network, 3: Source of various information, 4: User terminal, 11: Processing unit, 12: Storage unit, 110: User information acquisition unit, 111: Location information acquisition unit, 112: Disaster information acquisition unit, 113: Current location risk calculation unit, 114: Evacuation destination candidate selection unit, 115: Evacuation destination candidate risk calculation unit, 116: Acquaintance estimation unit, 117: Evacuation assistance required estimation unit, 118: Evacuation destination candidate evaluation unit, 119: Input / output unit, 120: User information storage unit, 121: Disaster information storage unit, 122: Hazard map storage unit 123: Risk information storage unit, 124: Evacuation destination list storage unit, 125: Evacuation destination candidate storage unit, 126: Evacuee visit history storage unit, 127: Regular visit destination storage unit for those requiring evacuation assistance, 128: Elevation information storage unit, 129: Road map base storage unit, 201: Evacuation destination candidate display screen, 211: Initial registration screen, 221: Evacuee information input screen, 1201: User information, 1231: Risk information, 1241: Evacuation destination list information, 1251: Evacuation destination candidate information, 1261: Evacuee visit history information, 1271: Regular visit destination information for those requiring evacuation assistance

Claims

1. An evacuation information display device that presents evacuation information to evacuees in the event of a disaster, An information acquisition unit that acquires user information, location information, disaster information, and hazard maps, A current location risk calculation unit calculates the disaster risk of the current location from the user information, location information, disaster information, and hazard map, An evacuation destination candidate selection unit selects an evacuation destination candidate that is close to the current location from the list of evacuation destinations and the list of non-designated evacuation destination candidates that can be added voluntarily, using the aforementioned user information and location information. A risk calculation unit for evacuation destinations calculates the disaster risk of the evacuation destinations based on the aforementioned disaster information, the aforementioned hazard map, and the route and distance from the current location to the aforementioned evacuation destinations. A unit for estimating the number of acquaintances of the evacuee at the aforementioned candidate evacuation destination, An evacuation information presentation device characterized by having an evacuation destination candidate evaluation unit that evaluates the evacuation destination candidate based on the risk of the current location, the risk of the evacuation destination candidate, the evacuation destination candidate, and the number of acquaintances.

2. In the evacuation information display device according to claim 1, The aforementioned acquaintance estimation unit is characterized in that it considers as an acquaintance a person a person who has frequent contact with the evacuee, a person with a long history of communication with the evacuee, or a person whose frequently visited places match those of the evacuee.

3. In the evacuation information display device according to claim 1, Furthermore, it has a unit for estimating the number of people requiring evacuation assistance at the aforementioned candidate evacuation destinations, The evacuation destination candidate evaluation unit is further characterized in that it evaluates the evacuation destination candidates based on the number of people requiring evacuation assistance.

4. In the evacuation information display device according to claim 1, If the aforementioned evacuee is a person requiring evacuation assistance, the aforementioned acquaintance estimation unit is replaced with a person requiring evacuation assistance estimation unit that estimates the number of persons requiring evacuation assistance at the aforementioned candidate evacuation destination. The evacuation destination candidate evaluation unit is characterized in that it evaluates the evacuation destination candidates based on the number of people requiring evacuation assistance, instead of the number of acquaintances.

5. In the evacuation information display device according to claim 3 or 4, The aforementioned unit for estimating persons requiring evacuation assistance is characterized in that it considers persons who have a high frequency of visiting places that persons requiring evacuation assistance frequently go to as persons requiring evacuation assistance.

6. In the evacuation information display device according to claim 3 or 4, The evacuation information display device is characterized in that the persons requiring evacuation assistance are any of the following: the elderly, persons with disabilities, infants, pregnant women, or foreigners.

7. In the evacuation information display device according to claim 1, The evacuation information presentation device is characterized in that the risk calculation unit for the evacuation destination candidate has a route risk calculation unit that calculates the passability of the road, which is the route from the current location to the evacuation destination candidate, by comparing the elevation difference between the road and the ground with the inundation depth on the hazard map, and selects the evacuation destination candidate based on the route risk.

8. In the evacuation information display device according to claim 1, The evacuation information presentation device is characterized in that the risk calculation unit for the current location and the risk calculation unit for the candidate evacuation destination calculate the risk for the current location or the candidate evacuation destination based on the current or future risk information from the disaster information.

9. In the evacuation information display device according to claim 1, The evacuation destination candidate evaluation unit is characterized by ranking the evacuation destination candidates in order of facilities and equipment, the number of acquaintances, or the distance from the current location.

10. In the evacuation information display device according to claim 1, The aforementioned evacuation destination candidate selection unit is characterized by selecting an evacuation destination candidate that is close to the current location, by selecting a location among the aforementioned non-designated evacuation destination candidates that has a higher-than-usual population than usual as a new non-designated evacuation destination candidate.

11. A method for presenting evacuation information to evacuees in the event of a disaster, By acquiring user information, location information, disaster information, and hazard maps, Based on the user information, location information, disaster information, and hazard map, the disaster risk of the current location is calculated. Using the user information and location information, a candidate evacuation destination close to the current location is selected from the list of evacuation destinations and the list of non-designated evacuation destinations that can be added voluntarily. Based on the aforementioned disaster information, the aforementioned hazard map, and the route and distance from the current location to the aforementioned candidate evacuation site, the disaster risk of the aforementioned candidate evacuation site is calculated. The number of acquaintances of the aforementioned evacuees at the aforementioned candidate evacuation destinations is estimated, A method for presenting evacuation information, characterized by evaluating the evacuation destination candidate based on the risk of the current location, the risk of the evacuation destination candidate, the evacuation destination candidate, and the number of acquaintances.

12. In the method for presenting evacuation information according to claim 11, The method for presenting evacuation information is characterized in that the estimation of the number of acquaintances involves considering as acquaintances people who have frequent contact with the evacuee, people with a long history of communication with the evacuee, and people whose frequently visited places match those of the evacuee.

13. In the method for presenting evacuation information according to claim 11, Furthermore, the number of people requiring assistance at the aforementioned candidate evacuation sites is estimated, The method for presenting evacuation information is characterized in that the evaluation of the evacuation destination candidates is further evaluated based on the number of people requiring evacuation assistance.

14. In the method for presenting evacuation information according to claim 13, The method for presenting evacuation information is characterized by estimating the number of persons requiring evacuation assistance by considering individuals who frequently visit places that persons requiring evacuation assistance often go to as persons requiring evacuation assistance.

15. In the method for presenting evacuation information according to claim 11, The method for presenting evacuation information is characterized by calculating the disaster risk of the aforementioned evacuation destination candidates by using the difference in elevation of the roads from the current location to the aforementioned evacuation destination candidates to calculate the route risk, which indicates whether the roads are passable, by comparing the elevation difference between the roads and the ground with the inundation depth on the hazard map, and selecting the aforementioned evacuation destination candidates based on the route risk.

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