Disaster prevention information providing system

Abstract

To simplify the constitution of monitoring equipment of a disaster prevention information providing system.SOLUTION: A disaster prevention information providing system 100 comprises an information processing device 20 and monitoring equipment 10 which acquires the state of an installation site and uploads the same to the information processing device 20. The information processing device 20 has the functions of: receiving the state of the site from the monitoring equipment 10 and temporarily saving the same; gathering primary disaster prevention information from a disaster prevention information source 300; determining whether there is a risk of disaster occurrence in each area based upon at least one of the primary disaster prevention information gathered from the disaster prevention information source 300 and the state of the site received from the monitoring equipment 10; determining the operation mode of the monitoring equipment 10 according to whether there is the risk of disaster occurrence in the area linked to the monitoring equipment 10 and indicating the operation mode to the monitoring equipment 10; and providing a user terminal 400 with the information acquired from the monitoring equipment 10 and the disaster prevention information source 300 at a request from the user terminal 400. The system is so configured that the monitoring equipment 10 operates in the operation mode indicated from the information processing device 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a disaster prevention information providing system, and more particularly to a system that collects various types of information related to disaster prevention from public and private monitoring devices and existing disaster prevention information providing services, and provides disaster prevention information to users. [Background technology]

[0002] In recent years, large-scale natural disasters have become more frequent, making it urgent to provide local residents with accurate and prompt disaster prevention information. Disaster prevention information can be obtained via the Internet from the Japan Meteorological Agency and private weather companies' disaster prevention weather information services, and river conditions can also be determined by accessing public and private surveillance cameras and water level gauges. National and local governments are building platforms that aggregate various types of information and provide users with the disaster prevention information they need in a timely manner, and the Ministry of Internal Affairs and Communications' L-Alert System is a typical example of this.

[0003] Surveillance equipment such as surveillance cameras and water level gauges installed in locations where it is difficult to supply power, such as rivers and roads, are powered by built-in batteries. Such battery-powered equipment generally operates intermittently to reduce power consumption. For example, a technology is known for a surveillance camera that acquires weather information, calculates the remaining power of the main power battery according to the weather information, and changes the capture interval and image transmission interval by switching the capture mode based on the calculated remaining power (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-167074 Summary of the Invention [Problem to be solved by the invention]

[0005] If the monitoring equipment were configured to acquire weather information and switch operating modes on its own, the equipment configuration would become complex, which could lead to increased costs. Installing many pieces of monitoring equipment at a site requires lowering the unit price of the equipment, which in turn requires that the equipment configuration be as simple as possible.

[0006] Furthermore, many disaster prevention information platforms are structured so that whenever a user accesses the platform, the server retrieves information from monitoring equipment or databases and provides it to the user. For example, whenever a user requests an image of a river, the image is retrieved from a monitoring camera and provided to the user. For this reason, when a disaster occurs or is about to occur, access from users seeking disaster prevention information becomes concentrated, increasing the amount of communication between the monitoring equipment and the server, which results in a heavy load on the entire system and the risk of it being impossible to provide information to users smoothly.

[0007] In view of the above problems, an object of the present invention is to provide a disaster prevention information providing system that simplifies the configuration of monitoring equipment and can provide information smoothly even when access from users is concentrated. [Means for solving the problem]

[0008] According to one aspect of the present invention, there is provided a disaster prevention information provision system that provides disaster prevention information in response to a request from a user, the disaster prevention information provision system comprising: an information processing device; and monitoring equipment that is installed at an on-site location and acquires on-site conditions and uploads the acquired conditions to the information processing device, wherein the information processing device has the following functions: receiving the on-site conditions from the monitoring equipment and temporarily storing them; collecting primary disaster prevention information from a disaster prevention information source; determining whether or not there is a risk of a disaster occurring in each area based on at least one of the primary disaster prevention information collected from the disaster prevention information source and the on-site conditions received from the monitoring equipment; determining the operating mode of the monitoring equipment based on whether or not there is a risk of a disaster occurring in the area linked to the monitoring equipment and instructing the monitoring equipment to select the operating mode; and providing information acquired from the monitoring equipment and the disaster prevention information source to the user terminal in response to a request from the user terminal, wherein the disaster prevention information provision system is configured to operate in the operating mode instructed by the information processing device.

[0009] Furthermore, in the above-mentioned disaster prevention information provision system, the information processing device organizes and stores the information obtained from the monitoring equipment and the disaster prevention information source by area, and upon receiving a request for disaster prevention information for any area from the user terminal, transmits the latest information corresponding to that area to the user terminal. [Effects of the Invention]

[0010] According to the present invention, the monitoring device can switch its operating mode in response to an instruction from the information processing device, eliminating the need for a mechanism for determining whether to switch operating modes on its own, thereby simplifying the device configuration. This reduces the unit price of monitoring devices and allows them to be installed at many sites. Furthermore, by having the information processing device organize and save information by area in advance, it is not necessary to access the monitoring device or other devices to obtain information each time an information request is made, so necessary information can be provided to users smoothly even during periods of high access. [Brief explanation of the drawings]

[0011] [Figure 1]1 is a schematic diagram of a disaster prevention information providing system according to an embodiment of the present invention. [Figure 2] FIG. 1 is a schematic diagram of a surveillance camera, which is an example of surveillance equipment. [Figure 3] FIG. 3 is a block diagram of the surveillance camera of FIG. 2. [Figure 4] FIG. 1 is a schematic diagram of an IoT sensor, which is another example of a monitoring device. [Figure 5] FIG. 5 is a block diagram of the IoT sensor of FIG. 4. [Figure 6] 1 is a diagram schematically illustrating how disaster prevention information is provided by a disaster prevention information providing system. [Figure 7] 10A and 10B are diagrams illustrating an example of an internal table, table updates when a surveillance camera is added, and disaster prevention information provision according to an example. [Figure 8] 10 is a flowchart illustrating an example of determining a risk of disaster occurrence in a certain area. [Figure 9] 10A and 10B are diagrams illustrating an example of an internal table and an example of table update and monitoring device control in response to a change in the determination of a risk of disaster occurrence according to an example. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, detailed description of well-known matters or redundant description of substantially identical configurations may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art. Note that the inventors provide the accompanying drawings and the following description to enable those skilled in the art to fully understand the present invention, and are not intended to limit the subject matter described in the claims. Furthermore, the dimensions of each component depicted in the drawings, the detailed shapes of the details, and the like may differ from the actual ones.

[0013] <Embodiment> 1 is a schematic diagram of a disaster prevention information providing system according to one embodiment of the present invention. The disaster prevention information providing system 100 according to this embodiment includes monitoring devices 10 installed at various sites, such as rivers, roads, reservoir dams, sand-control dams, flood gates, water gates, and lock gates, to acquire information about the conditions at those sites, and an information processing device 20 installed indoors, such as in a data center or server room, and capable of communicating with the monitoring devices 10 via a telecommunications line 200, such as the Internet line or a public wireless communication network.

[0014] The monitoring devices 10 are available in various types, such as monitoring cameras, contact sensors, and physical quantity sensors, or a combination of these. For example, monitoring cameras capture images of sites such as rivers and roads, and contact sensors capture the operating status of movable equipment such as flood gates, sluice gates, and lock gates. Although there are differences in type, monitoring devices 10 are often installed in locations where external power supply is difficult, and are therefore often powered by built-in batteries. The monitoring devices 10 operate intermittently to reduce battery consumption, acquiring the status of the site, and upload the data to the information processing device 20 via wireless communication over the telecommunications line 200. As will be described later, the intermittent operation of the monitoring devices 10 can be changed by an operating mode instruction from the information processing device 20.

[0015] FIG. 2 is a schematic diagram of a surveillance camera, an example of a surveillance device. FIG. 3 is a block diagram of the surveillance camera in FIG. 2. The surveillance camera 10A is installed at various locations, such as rivers, roads, reservoir dams, and sand-control dams, to capture images of the locations. It is structurally composed of a housing 11A and a solar panel 12 connected to it. The housing 11A is roughly rectangular, box-shaped, approximately 200 mm wide, 170 mm high, and 100 mm deep. The lower front portion is transparent and has IPX3 waterproofing (rainfall at a 60-degree angle). The solar panel 12 is made of monocrystalline silicon and has a plate-like shape, approximately 200 mm long, 140 mm short, and 30 mm thick. The housing 11A houses electronic components 13A, including a timer, CPU, LTE modem (multi-carrier), and antenna; a battery controller 14; a battery 15; and a board camera 16. The image resolution of the board camera 16 is high-definition quality 1080p (1920 x 1080).

[0016] The battery controller 14 converts the DC voltage generated by the solar panel 12 and controls the charging of the battery 15. The battery controller 14 also converts the DC voltage of the battery 15 to generate an operating voltage for the electronic component 13A. The board camera 16 is disposed with its lens surface facing the lower front surface of the housing 11A, and captures still images of the site where the surveillance camera 10A is installed and supplies the image data to the electronic component 13A.

[0017] The electronic component 13A operates on an operating voltage supplied from the battery controller 14. More specifically, the CPU operates intermittently at predetermined times counted by a timer to acquire captured images from the board camera 16 and upload the image data to the information processing device 20 via LTE communication from the antenna via the LTE modem. In this way, the surveillance camera 10A can operate by storing the power generated by the solar panel 12 in the battery 15, so it can operate for long periods without an external power supply, and can operate for seven days or more even without sunlight.

[0018] FIG. 3 is a schematic diagram of an IoT sensor, another example of a monitoring device. FIG. 4 is a block diagram of the IoT sensor in FIG. 3. The IoT sensor 10B is a non-contact contact sensor that is installed on movable equipment such as flood gates, sluice gates, and lock gates to acquire the operating status of the movable equipment, such as the open / closed state of the flood gates. The housing 11B of the IoT sensor 10B is a small, sealed rectangular box measuring approximately 70 mm in length, 30 mm in width, and 10 mm in thickness. It has IP65 dustproof and waterproof performance and is designed to be attached to the movable equipment to be monitored by screws or other fasteners. The housing 11B contains electronic components 13B, including a timer, CPU, SigFox (registered trademark) modem, and antenna, as well as a battery 15 and a Hall element 17.

[0019] Hall element 17 is paired with magnet 18 to detect the operating status of the movable equipment. In the case of a flood door, housing 11B containing Hall element 17 is attached to the door frame, while magnet 18 is attached to the door. When the door is closed, Hall element 17 and magnet 18 come close to each other, detecting that the door is closed, and when the door is open, Hall element 17 and magnet 18 move away from each other, detecting that the door is open.

[0020] The electronic component 13B operates on an operating voltage supplied from the battery 15. More specifically, the CPU operates intermittently at predetermined intervals counted by a timer to acquire the sensing state of the Hall element 17 and uploads the operating status of the movable equipment, for example, the open / closed state of a flood gate, to the information processing device 20 via LPWA communication from the antenna via the SigFox modem. In this way, the IoT sensor 10B has a built-in battery 15, and can operate for a long period of time without an external power supply.

[0021] Returning to FIG. 1 , the information processing device 20 is further capable of communicating with a disaster prevention information source 300 via an electric information communication line 200. The disaster prevention information source 300 here refers to public monitoring equipment installed by the national or local government, such as river cameras, river water level gauges, weather observation equipment, seismometers, tsunami warning devices, and landslide warning devices, disaster prevention and weather information services provided by the Japan Meteorological Agency and private weather companies, and the Ministry of Internal Affairs and Communications' L-Alert system. Unlike the monitoring device 10, the disaster prevention information source 300 cannot be controlled by downlink communication from the information processing device 20. Furthermore, the information processing device 20 is capable of communicating with a user terminal 400, such as a PC, smartphone, or tablet terminal, via the electric information communication line 200. The users may be a variety of entities, including companies, local governments, and ordinary local residents.

[0022] The information processing device 20 is composed of a single computer device or a group of multiple computers. In terms of roles, the information processing device 20 is composed of a front-end server (not shown) that receives data related to the situation at the site uploaded from the monitoring device 10, collects various data and information from the disaster prevention information source 300, accepts requests from the terminal 400, and provides information to the terminal 400, a storage or database that temporarily or long-term stores the various received data and information, and various parameters required for information processing and image processing, and a back-end server that performs various calculation processes on the data acquired by the front-end server and the data accumulated in the storage.

[0023] ≪Disaster prevention information provision≫ The disaster prevention information providing system 100 can provide information tailored to the user, such as providing BCP information to businesses, flood gate opening / closing confirmation information to local governments, and disaster prevention information to general local residents. Providing disaster prevention information to local residents will be described as an example. The information processing device 20 organizes and stores information acquired from the monitoring devices 10 and disaster prevention information sources 300 by district, and upon receiving a request for disaster prevention information for a desired district from a user terminal 400, transmits the latest information corresponding to that district to the user terminal 400. A district here refers to a city, town, village, or a smaller administrative division or school district.

[0024] FIG. 6 is a diagram schematically illustrating how disaster prevention information is provided by the disaster prevention information provision system 100. For example, as shown in FIG. 6, the information processing device 20 organizes and prepares information acquired from the monitoring devices 10 and the disaster prevention information source 300 for district 1 and district 2, respectively. At this time, the information processing device 20 updates old information every time new information is acquired from the monitoring devices 10 and the disaster prevention information source 300, thereby always keeping the latest information available. When disaster prevention information for district 1 is requested from the terminal 400, the information processing device 20 provides various information for district 1, such as the latest captured image by the monitoring devices 10 (e.g., surveillance cameras) linked to district 1, the water level of rivers in district 1, and evacuation shelters for district 1, to the requesting terminal 400. When disaster prevention information for district 2 is requested, the information processing device 20 provides various information for district 2 to the requesting terminal 400.

[0025] To provide the above-described information for each area, the information processing device 20 manages the areas and the monitoring devices 10 in an internal table. Figure 7 illustrates an example of an internal table, table updates when a monitoring camera is added, and disaster prevention information provision. The information processing device 20 has two internal tables: an area table and a camera table. The area table consists of three attributes: area ID, source camera ID, and area status. The camera table consists of six attributes: camera ID, data path, last received date, source area ID, camera operation mode, and sleep time. The area status indicates whether or not there is a risk of a disaster occurring in the area. If there is a risk of a disaster, it is marked "Disaster" and if there is no risk, it is marked "Normal." The data path represents the data path of the internal storage where the latest captured images from the monitoring camera are stored. The last received date represents the last date and time the information processing device 20 received captured images from the monitoring camera. The camera operation mode represents the operating mode of the monitoring camera. It is marked "Disaster" in disaster mode and "Normal" in normal mode. The sleep time represents the intermittent operation time of the monitoring camera. For convenience, the referencing camera ID column in the district table displays part of the record information for that camera ID (data path and last reception date) in addition to the camera ID. Also, the referencing district ID column in the camera table displays part of the record information for that district ID (district status) in addition to the district ID. Also, fields that have changed in the internal tables are written in bold.

[0026] In the initial state, when information on district ID=2 is requested from user terminal 400, information processing device 20 refers to the record information for district ID=2 in the district table, and provides the image on data path=path2 (the most recent image captured by the surveillance camera with camera ID=C2) and the image on data path=path3 (the most recent image captured by the surveillance camera with camera ID=C3) to user terminal 400. When a surveillance camera with camera ID=5 is added to the district with district ID=2, information processing device 20 updates the district table and the camera table, and adds information on camera ID=C5 as a new record to district ID=2 in the district table, and adds information on referencing district ID=2 as a new record to camera ID=C5 in the camera table. After the table is updated, when information for area ID=2 is requested from user terminal 400, information processing device 20 refers to the record information for area ID=2 in the area table and provides user terminal 400 with an image from data path=path2 (the most recent image taken by the surveillance camera with camera ID=C2), an image from data path=path3 (the most recent image taken by the surveillance camera with camera ID=C3), and an image from data path=path5 (the most recent image taken by the surveillance camera with camera ID=C5).

[0027] Even when the monitoring device 10 is a physical quantity sensor, the information processing device 20 manages the districts and monitoring devices 10 in an internal table, and updates the table and provides disaster prevention information when a physical quantity sensor is added in the same way.

[0028] <Disaster risk assessment> The information processing device 20 determines whether or not there is a risk of a disaster occurring in each area based on primary disaster prevention information collected from the disaster prevention information source 300. The primary disaster prevention information here refers to original disaster prevention information from the disaster prevention information source 300 that is used as a reference for determining the risk of a disaster occurring, such as warnings and advisories issued by the Japan Meteorological Agency, weather information provided by the Japan Meteorological Agency or private weather companies, river water level information measured by public monitoring equipment, and L-Alert information.

[0029] FIG. 8 is a flowchart illustrating an example of determining the risk of a disaster occurring in a certain area. First, the information processing device 20 checks whether a predetermined warning, such as a heavy rain warning, has been issued for the area based on information acquired from the Japan Meteorological Agency's disaster prevention weather information service or the Ministry of Internal Affairs and Communications' L-Alert system (S12). If a predetermined warning, such as a heavy rain warning, has been issued (YES in S14), the information processing device 20 determines that there is a risk of a disaster occurring in the area (S16), and then returns to step S12 to repeat the process. Specifically, the area status attribute of the area in the area table shown in FIG. 7 is set to "disaster." If a predetermined warning has not been issued for the area (NO in S14), the information processing device 20 predicts future weather conditions in the area based on weather forecast information collected from the Japan Meteorological Agency, a private weather company's disaster prevention weather information service, or the like (S18). If bad weather such as heavy rain is predicted (YES in S20), the information processing device 20 determines that there is a risk of a disaster occurring in the area (S16), and then returns to step S12 to repeat the process.

[0030] If bad weather is not expected in the area (NO in S20), the information processing device 20 checks whether there is a risk of disaster occurring in the upstream area of ​​the same river system (S22). Specifically, it is possible to check whether there is a risk of disaster occurring in the upstream area by referencing the area state attributes of the upstream area in the area table shown in Figure 7. If there is a risk of disaster occurring in the upstream area (YES in S23), the information processing device 20 determines that there is a risk of disaster occurring in the downstream area (S16), and then returns to step S12 and repeats the process.

[0031] If there is no risk of a disaster occurring in the upstream area (NO in S23), the information processing device 20 determines whether or not there is a risk of a disaster occurring in the site area based on data regarding the site situation uploaded from the monitoring device 10 (S24). For example, if the monitoring device 10 is a surveillance camera, the information processing device 20 performs image analysis of the site image uploaded from the monitoring device 10 using machine learning, and determines that there is a risk of a disaster occurring in the site area if characteristics that are different from normal conditions are detected. Also, for example, if the monitoring device 10 is a physical quantity sensor, the information processing device 20 determines that there is a risk of a disaster occurring in the site area if the sensor value uploaded from the monitoring device 10 exceeds a threshold. If there is a risk of a disaster occurring in the site area (YES in S25), the information processing device 20 determines that there is a risk of a disaster occurring in the site area (S16), and then returns to step S12 and repeats the process.

[0032] If there is no risk of a disaster occurring in the site area (NO in S25), the information processing device 20 checks whether the area, which is a downstream area, is designated as an area expected to be flooded by inland water on a hazard map or the like (S26). Specifically, by adding an attribute for inland water flooding to the area table shown in Fig. 7 and referring to the inland water flooding attribute of the area in the expanded area table, it is possible to check whether the area is an area expected to be flooded by inland water.

[0033] If the area falls within the designated area for inland flooding (YES in S28), the information processing device 20 checks whether a predetermined condition has been met since the risk of a disaster occurring in the upstream area changed from present to absent (S30). For example, the information processing device 20 checks whether a certain period of time has passed since the risk of a disaster occurring in the upstream area changed from present to absent, or whether the water level of the river in the downstream area has fallen below a predetermined value. The water level of the river can be obtained from the monitoring device 10 or the disaster prevention information source 300. If the predetermined condition is not met (NO in S32), the information processing device 20 determines that the downstream area is at risk of a disaster (S16), and then returns to step S12 to repeat the process. On the other hand, if the downstream area is not within the designated area for inland flooding (NO in S28) or if the predetermined condition is met (YES in S32), the information processing device 20 determines that the downstream area is at no risk of a disaster (S34), and then returns to step S12 to repeat the process. Specifically, the district status attribute of the district in question is set to "normal" in the district table shown in FIG.

[0034] <Monitoring equipment control> The monitoring device 10 operates intermittently and periodically transmits data to the information processing device 20. When the information processing device 20 receives data from the monitoring device 10, it refers to an internal table and instructs the monitoring device 10 on an operation mode. The monitoring device control by the information processing device 20 will be explained using the same internal table as the internal table shown in FIG.

[0035] FIG. 9 illustrates an example of an internal table and an example of table updates and surveillance device control associated with a change in the disaster risk assessment. When image data is uploaded from the surveillance camera (surveillance device 10) with camera ID C5, the information processing device 20 receives the image data, updates the last reception date for camera ID C5 in the camera table, saves the received image data in the storage device (not shown), acquires its data path, and updates the data path for camera ID C5 in the camera table. Furthermore, the information processing device 20 references the sleep time attribute for camera ID C5 in the camera table and transmits "10 minutes" along with an acknowledgement to the surveillance camera that uploaded the image data. The surveillance camera receives the sleep time information from the information processing device 20, sets its internal timer to 10 minutes, and enters sleep mode. The district table is updated as the camera table is updated, and the latest captured image from the surveillance camera with camera ID C5 is provided to the user terminal 400 that requested information on district ID 2.

[0036] When the information processing device 20 determines that there is a risk of a disaster occurring in the area with area ID=2, it sets the area state attribute of area ID=2 in the area table to "disaster." Area ID=2 is linked to surveillance cameras with camera IDs=C2, C3, and C5, and the information processing device 20 sets the camera operation mode attribute of these camera IDs in the camera table to "disaster" and sets the sleep time attribute to "3 minutes." Here, for surveillance devices 10 linked to multiple areas, such as the surveillance cameras with camera IDs=C2 and C3, when the information processing device 20 determines that there is a risk of a disaster occurring in at least one of those areas, it sets the operation mode of the surveillance devices 10 to disaster mode.

[0037] Subsequently, when image data is uploaded again from the surveillance camera with camera ID=C5, the last reception date for camera ID=C5 in the camera table is updated, the received image data is saved in the storage device (not shown), its data path is acquired, and the data path for camera ID=C5 in the camera table is updated. Furthermore, by referencing the sleep time attribute for camera ID=C5 in the camera table, the information processing device 20 sends "3 minutes" along with an acknowledgement to the surveillance camera that uploaded the image data. The surveillance camera receives the sleep time information from the information processing device 20, sets its internal timer to 3 minutes, and goes to sleep. The district table is also updated as the camera table is updated, and the latest captured image from the surveillance camera with camera ID=C5 is provided to the user terminal 400 that requested information on district ID=2.

[0038] Even when the monitoring device 10 is a physical quantity sensor, the table update and monitoring device control associated with the change in the internal table and the determination of the risk of disaster occurrence are performed in the same manner.

[0039] In this way, the information processing device 20 instructs the monitoring devices 10 in an area determined to have a risk of disaster to enter disaster mode, and instructs the monitoring devices 10 in an area determined to have no risk of disaster to enter normal mode. Meanwhile, the monitoring devices 10 operate in the operation mode instructed by the information processing device 20, operating intermittently for long periods in normal mode and operating intermittently for short periods in disaster mode.

[0040] Effect According to this embodiment, the monitoring device 10 only needs to switch the operation mode in accordance with instructions from the information processing device 20, and does not need a mechanism to determine whether to switch the operation mode on its own, resulting in a simple device configuration. This reduces the unit price of the monitoring device 10, allowing the monitoring device 10 to be installed at many sites. Furthermore, for battery-powered monitoring devices 10, switching the operation mode in response to instructions from the information processing device 20 reduces power consumption and enables the device to operate for a long period of time using the built-in battery.

[0041] Furthermore, the information processing device 20 takes into consideration that the monitoring device 10 is installed in an area where inland flooding is expected, and instructs the operating mode of the monitoring device 10, so that the user can be frequently provided with the latest on-site situation in preparation for flooding that occurs with a time lag after the alarm is lifted.

[0042] Furthermore, since the information processing device 20 organizes and stores information by area in advance, it does not need to access the monitoring device 10 or the like to acquire information every time an information request is made, and necessary information can be smoothly provided to users even if access is concentrated.

[0043] <<Variations>> In addition to switching the intermittent operation time depending on the operation mode, the monitoring device 10 may also switch the image resolution or image compression rate, for example, in the case of a monitoring camera. For example, the monitoring device 10 may capture images of the scene at a low resolution and a high compression rate in normal mode and at a high resolution and a low compression rate in disaster mode. The lower the image resolution or the higher the compression rate, the smaller the data size and the less power is consumed when transmitting the image.

[0044] The information processing device 20 may determine the risk of a disaster by giving top priority to the on-site situation uploaded from the monitoring device 10. For example, in the flowchart of Fig. 8, steps S24 and S25 may be executed before step S12. This makes it possible to determine that there is a risk of a disaster in the on-site area when it is determined that the risk of a disaster is high based only on the on-site situation, regardless of whether an alert has been issued.

[0045] As described above, the embodiments have been described as examples of the technology of the present invention. For this purpose, the accompanying drawings and detailed description have been provided. Therefore, the components described in the accompanying drawings and detailed description may include not only components essential for solving the problem, but also components that are not essential for solving the problem in order to exemplify the above technology. Therefore, the fact that these non-essential components are described in the accompanying drawings or detailed description should not be interpreted as immediately indicating that these non-essential components are essential. Furthermore, because the above-described embodiments are intended to exemplify the technology of the present invention, various modifications, substitutions, additions, omissions, etc. may be made within the scope of the claims or their equivalents. [Explanation of symbols]

[0046] 100 Disaster Prevention Information System 10 Monitoring equipment 20 Information processing equipment 200 Telecommunications Lines 300 Disaster prevention information source 400 User Terminals

Claims

1. A disaster prevention information providing system that provides disaster prevention information in response to a request from a user, an information processing device; a monitoring device that is installed at the site, acquires the situation at the site, and uploads the acquired situation to the information processing device; The information processing device, A function of receiving and temporarily storing the on-site situation from the monitoring device; The function of collecting primary disaster prevention information from disaster prevention information sources, a function of determining whether or not there is a risk of a disaster occurring in each district based on at least one of the primary disaster prevention information collected from the disaster prevention information source and the on-site situation received from the monitoring device; a function of determining an operation mode of the monitoring device according to whether or not there is a risk of a disaster occurring in an area associated with the monitoring device, and instructing the monitoring device to operate in that mode; and a function of providing information acquired from the monitoring device and the disaster prevention information source to the user terminal in response to a request from the user terminal, The monitoring device is configured to operate in an operation mode instructed by the information processing device. A disaster prevention information providing system.

2. The disaster prevention information provision system described in claim 1, wherein when the information processing device determines that there is a risk of a disaster occurring in an upstream area of ​​the same river system, it determines that there is a risk of a disaster occurring in a downstream area regardless of the primary disaster prevention information collected from the disaster prevention information source.

3. The disaster prevention information provision system of claim 2, wherein the information processing device determines that there is a risk of a disaster occurring in downstream areas designated as areas expected to be flooded by inland water for at least a certain period of time after the risk of a disaster occurring in upstream areas changes from yes to no.

4. The disaster prevention information provision system of claim 2, wherein the information processing device determines that there is a risk of a disaster occurring in a downstream area designated as an area expected to be flooded by inland water, even if the risk of a disaster occurring in the upstream area changes from present to absent, until the water level of the river in the downstream area falls below a predetermined value.

5. A disaster prevention information provision system as described in any one of claims 1 to 4, wherein when the information processing device determines that there is a risk of a disaster occurring in at least one area of ​​the monitoring devices linked to multiple areas, it instructs the monitoring devices to operate in an operating mode corresponding to the risk of a disaster occurring.

6. The monitoring device is battery-powered, operates intermittently for a relatively long period in a normal mode, and operates intermittently for a relatively short period in a disaster mode, 5. A disaster prevention information provision system as described in any one of claims 1 to 4, wherein the information processing device instructs the monitoring devices in an area determined to be at risk of a disaster to use the disaster mode, and instructs the monitoring devices in an area determined to be at no risk of a disaster to use the normal mode.

7. The monitoring device is battery-powered, operates intermittently for a relatively long period in a normal mode, and operates intermittently for a relatively short period in a disaster mode, The disaster prevention information provision system of claim 5, wherein the information processing device instructs the monitoring devices in an area determined to be at risk of a disaster to use the disaster mode, and instructs the monitoring devices in an area determined to be at no risk of a disaster to use the normal mode.

8. A disaster prevention information provision system as described in any one of claims 1 to 4, wherein the information processing device organizes and stores information obtained from the monitoring equipment and the disaster prevention information source by area, and upon receiving a request for disaster prevention information for any area from the user terminal, transmits the latest information corresponding to that area to the user terminal.

9. The disaster prevention information provision system of claim 5, wherein the information processing device organizes and stores the information obtained from the monitoring equipment and the disaster prevention information source by area, and upon receiving a request for disaster prevention information for any area from the user terminal, transmits the latest information corresponding to that area to the user terminal.

10. The disaster prevention information provision system of claim 6, wherein the information processing device organizes and stores the information obtained from the monitoring equipment and the disaster prevention information source by area, and upon receiving a request for disaster prevention information for any area from the user terminal, transmits the latest information corresponding to that area to the user terminal.

11. The disaster prevention information provision system of claim 7, wherein the information processing device organizes and stores the information obtained from the monitoring equipment and the disaster prevention information source by area, and upon receiving a request for disaster prevention information for any area from the user terminal, transmits the latest information corresponding to that area to the user terminal.

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