JP2012160029A - Warning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a warning system which can be constructed inexpensively and simply without needing equipment such as a rain gauge and a water level gauge or a computer with high processing capacity.SOLUTION: The warning system comprises: rainfall information obtaining means for obtaining rainfall information on a predetermined area via a communication line (a step S101); image processing means for image-creating a current rainfall pattern of time series based on the rainfall information obtained by the rainfall information obtaining means (a step S102); evaluation calculating means for comparing the current rainfall pattern image-created by the image processing means with a past rainfall pattern of the area to calculate an evaluation value based on the compared result (a step S103); and notifying means for giving a warning according to the evaluation value calculated by the evaluation calculating means (a step S104).

Description

  The present invention relates to a warning system for predicting and reporting damage such as submergence caused by rainfall.

  In recent years, damage caused by local heavy rains has frequently occurred in urban areas. Such damage can be said to be a kind of “inland water inundation” due to temporary excess of rainwater drainage capacity. In general, as a method of predicting “inland water inundation” in urban areas, it is assumed that local heavy rains that change from moment to moment are assumed to be uniform rainfall intensity, and details such as ground elevation, topography, land use status of the ground surface, etc. A complex and advanced analysis method is adopted that combines surface flow analysis by simple modeling and runoff analysis that reproduces a sewer network stretched vertically and horizontally underground. Modeling in the above analysis method is difficult to improve modeling accuracy, such as updating or changing the sewer network, the operation status of the drainage station that discharges the sewer to the river, and the inflow and outflow between the ground surface and the sewer. There are many items. Further, in the above analysis method, the rainfall external force “local heavy rain”, which is an important factor in the analysis, does not fall uniformly in terms of area and strength, and may result in an analysis result that is far from reality. Furthermore, even if the inundation amount in the analysis area can be predicted and calculated, it is not possible to predict where the damage will occur specifically. In particular, even if a specific rainfall external force can be identified even if the time (lag) from the occurrence / recognition of “local heavy rain” to the occurrence of damage is as short as several tens of minutes to several hours, detailed analysis and analysis from that point Is impossible.

  On the other hand, the interest of individual residents and individual building managers lies in the very immediate and familiar danger of "sudden rain showers suddenly fallen around their homes." Currently, there are private weather forecasts on TV radio and the Internet, as well as general rainfall information provided by public institutions (for example, Tokyo Amesh (provided by the Tokyo Metropolitan Sewerage Bureau) and MP Radar (provided by the Ministry of Land, Infrastructure, Transport and Tourism)). It is in an environment where the outbreak information can be obtained. However, the information on the occurrence of local heavy rain is not associated with the possibility of occurrence of damage at individual locations due to heavy rain.

  Therefore, conventionally, a technique for predicting damage such as the possibility of flooding in a predetermined area due to rain has been proposed. For example, Patent Document 1 (Japanese Patent Laid-Open No. 2002-298063) is a system mainly for sewer managers and disaster prevention officers of local governments, and includes real-time measurement data (rain gauge, water level gauge), huge model The technology for associating with specific damages is disclosed by the conversion (terrain elevation, sewer network) and detailed analysis work (rainfall analysis, flood analysis).

Patent Document 2 (Japanese Patent Application Laid-Open No. 2004-192206) predicts future inundation based on real-time information in a system for disaster prevention personnel in local governments (runoff analysis, inundation analysis, sewer network flow analysis). ), And those that can issue warnings to the entire area as needed are disclosed.
JP 2002-298063 A JP 2004-192206 A

In the conventional technique described in Patent Document 1, there is a problem that a facility such as a rain gauge and a water level gauge must be installed in the target area, which requires a large cost and labor. Moreover, in the system described in Patent Document 2, it is necessary to execute analysis processing that requires a large processing load on the computer, such as runoff analysis, inundation analysis, and sewer network flow rate analysis, and a computer with high processing capacity must be prepared. There was a problem that the cost for system construction was high.

  This invention solves the said subject, The invention which concerns on Claim 1 was acquired by the rain information acquisition means which acquires the rain information regarding a predetermined area via a communication line, and the said rain information acquisition means An image processing means for imaging a current rainfall pattern in time series based on rainfall information, and a comparison between the current rainfall pattern imaged by the image processing means and a past rainfall pattern in the area and evaluating based on the result of comparison An alerting system comprising: an evaluation calculating unit that calculates a value; and an informing unit that notifies an alarm according to the evaluation value calculated by the evaluation calculating unit.

  According to a second aspect of the present invention, there is provided rainfall information acquisition means for acquiring rainfall information relating to a predetermined area via a communication line, and a time-series current rainfall pattern based on the rainfall information acquired by the rainfall information acquisition means. Image processing means for imaging, evaluation calculation means for comparing the current rainfall pattern imaged by the image processing means with the past rainfall pattern in the area and calculating an evaluation value based on the comparison result, and the evaluation calculation Evaluation value correction means for correcting the evaluation value calculated by the means based on land characteristics in the area, and notification means for notifying the alarm according to the evaluation value corrected by the evaluation value correction means. It is a warning system characterized by.

  The invention according to claim 3 is the alert system according to claim 2, wherein the land characteristics in the area are ground elevation, depression ratio, land use form, and drainage capacity.

  The invention according to claim 4 is characterized in that, in the warning system according to claim 2 or claim 3, there are a plurality of notification levels by the notification means.

  According to the alert system according to the present invention, equipment such as a rain gauge and a water level gauge and a computer with high processing capacity are unnecessary, and it is possible to construct a system easily and inexpensively.

It is a figure which shows an example of the system configuration used in order to perform the alerting system 1 which concerns on embodiment of this invention. It is a figure explaining the relationship between the alert system 1 which concerns on embodiment of this invention, and various information provision servers. It is a figure which shows the flowchart of a process of the alert system 1 which concerns on 1st Embodiment of this invention. It is a figure which shows the flowchart of the process of the alerting | reporting determination subroutine of the alert system 1 which concerns on 1st Embodiment of this invention. It is a figure which shows the flowchart of a process of the alerting system 1 which concerns on 2nd Embodiment of this invention. It is a figure which shows the flowchart of a process of the evaluation value calculation subroutine of the alerting system 1 which concerns on 2nd Embodiment of this invention. It is a figure which shows the flowchart of the process of the alerting | reporting determination subroutine of the alert system 1 which concerns on 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an example of a system configuration used for executing a warning system 1 according to an embodiment of the present invention.

  In FIG. 1, 10 is a system bus, 11 is a CPU (Central Processing Unit), 12 is a RAM (Random Access Memory), 13 is a ROM (Read Only Memory), 14 is a communication control unit that controls communication with an external information device, 15 is an input control unit such as a keyboard controller, 16 is an output control unit such as a display controller, 17 is an external storage device control unit, 18 is an input unit including input devices such as a keyboard, pointing device, and mouse, 19 is an LCD display, etc. An output unit 20 including a display device and a printing device 20 is an external storage device such as an HDD (Hard Disk Drive).

  In FIG. 1, the CPU 11 retrieves and acquires data by communicating with an external device in accordance with a program ROM stored in the ROM 13 or a program stored in the large-capacity external storage device 20. Processing of output data in which graphics, images, characters, tables, etc. are mixed is executed, and management of a database stored in the external storage device 20 is further executed.

  Further, the CPU 11 comprehensively controls each device connected to the system bus 10. The program ROM in the ROM 13 or the external storage device 20 stores an operating system program (hereinafter referred to as OS) that is a basic program for controlling the CPU 11. The ROM 13 or the external storage device 20 stores various data used when performing output data processing or the like. The RAM 12 functions as a main memory and work area for the CPU 11.

  The input control unit 15 controls the input unit 18 from a keyboard or a pointing device (not shown). The output control unit 16 controls the output of the output unit 19 of a display device such as an LCD display or a printing device such as a printer.

  The external storage device control unit 17 is an external storage device 20 such as an HDD (Hard Disk Drive) or a floppy disk (FD) that stores a boot program, various applications, font data, user files, editing files, printer drivers, and the like. Control access to.

  In the alert system 1 according to the present embodiment, in particular, the rain damage database 21 and the land characteristic database 22 are stored in the external storage device 20, and the CPU 11 is configured to refer to them appropriately.

  The rainfall damage database 21 is a database that stores a rainfall pattern in a predetermined area when a heavy rain damage has occurred in the past and a degree of damage corresponding to the pattern. A past rainfall pattern is assumed to be an image of a time-series rainfall pattern. In the present embodiment, as an example, the rainfall damage database 21 visualizes the time series rainfall pattern when “damaged” and the time series rainfall pattern when “no damage” for each region. An example stored and stored will be described. The “region” may be defined by defining a virtual mesh on the map, or may be defined based on a lot number or the like.

  In the land characteristic database 22, “ground elevation”, “recess ratio”, “land use form”, and “drainage capacity” for each “region” as described above are converted into data. That is, the CPU 11 can refer to, for example, the ground elevation, the depression ratio, the land use form, and the drainage capacity for a certain area A by referring to the land characteristic database 22.

  Further, the communication control unit 14 controls communication with an external device via a network, thereby acquiring data required by the system from a database held by an external device on the Internet or an intranet, It is configured to be able to send information to an external device.

  In addition to an operating system program (hereinafter referred to as OS) that is a control program for the CPU 11, the external storage device 20 is installed and stored with a system program for operating the alert system 1 of the present invention on the CPU 11 and data used in the system program.・ It is remembered.

  The data used in the system program that implements the alert system 1 of the present invention may basically be stored in the external storage device 20, and these data may be stored on the Internet or via the communication control unit 14. You may make it acquire from the external apparatus on an intranet.

  Next, the alert system 1 as described above is connected to a communication line 50 such as the Internet connected via the communication control unit 14 and acquires various data from various information providing servers connected to the communication line 50. It is supposed to be. FIG. 2 is a diagram for explaining the relationship between the alert system 1 and various information providing servers according to the embodiment of the present invention.

  The rainfall information providing server 60 is a server that provides rainfall information such as Tokyo Amesh (provided by the Tokyo Sewerage Bureau) and MP Radar (provided by the Ministry of Land, Infrastructure, Transport and Tourism). The alert system 1 obtains rainfall information from such a server, and creates data obtained by imaging the current time series rainfall pattern by image processing. Note that when the rain information providing server 60 distributes data in which the current time-series rainfall pattern is imaged, it is not necessary to perform image processing on the alert system 1 side.

  Next, the process example which concerns on 1st Embodiment in the alerting system 1 comprised as mentioned above is demonstrated. FIG. 3 is a diagram showing a flowchart of processing of the alert system 1 according to the first embodiment of the present invention. Note that the flowchart described below is merely an example of processing. 1st Embodiment is an example which performs the process which determines a vigilance level, without using the land characteristic database 22. FIG.

  In FIG. 4, when the process is started in step S100, the rainfall information is acquired from the rainfall information providing server 60 in the subsequent step S101. Next, in step S102, the obtained rainfall information is converted into image data as necessary. In step S103, a series of image data in the past (predetermined period) and the rainfall information converted into image data in step S102 are connected. By doing so, the image data is time-series. Thereby, it is possible to obtain data in which time-series rainfall patterns are converted into image data.

  In subsequent step S104, an evaluation value calculation sub-run is executed. Hereinafter, description will be made based on the flowchart of FIG. FIG. 4 is a diagram showing a flowchart of the process of the evaluation value calculation subroutine of the alert system 1 according to the embodiment of the present invention.

When the evaluation value calculation subroutine is started in step S200, in the next step S201, the current rainfall pattern obtained in step S102 and the past rainfall pattern “damaged” stored in the rainfall damage database 21 are stored. Make a comparison. In the next step S202, it is determined as a result of the comparison whether or not there is a similarity of a predetermined value or more between the two patterns. If the result of this determination is YES, the process proceeds to step S203, where it is output as notification to the output unit 19 such as an LCD display as “possibility of damage”. On the other hand, if the determination result is NO, the process proceeds to step S204.

  In step S204, the current rainfall pattern obtained in step S102 is compared with the “no damage” past rainfall pattern stored in the rainfall damage database 21. In the next step S205, it is determined as a result of the comparison whether or not there is a similarity of two or more between the two patterns. If the result of this determination is YES, the process proceeds to step S206, where “no possibility of damage” is output to the output unit 19 such as an LCD display for notification. On the other hand, if the result of the determination is NO, the process proceeds to step S207, where “not likely to be damaged” is output to the output unit 19 such as an LCD display for notification, and the process returns to the original routine.

  After returning to the main routine from the notification determination subroutine as described above, in step S105, it is determined whether or not there is a system process end request. If the determination is YES, the process proceeds to step S106 and the process is ended. If NO, the process returns to step S101.

  According to the warning system 1 according to the present invention as described above, an alarm can be effectively notified based on information acquired from the rainfall information providing server 60, and facilities such as a rain gauge and a water level gauge as in the past are provided. In addition, a computer with high processing capability is not required, and it is possible to construct a system easily and inexpensively. Moreover, according to the alert system 1 which concerns on this invention, it becomes possible to alert | report an exact alert by a some alert level.

  Next, the process which concerns on 2nd Embodiment in the alert system 1 is demonstrated. FIG. 5 is a diagram showing a flowchart of processing of the alert system 1 according to the embodiment of the present invention. Note that the flowchart described below is merely an example of processing. In the second embodiment, correction is performed by using the land characteristic database 22 to determine the alert level.

  In FIG. 6, when the process is started in step S300, rainfall information is acquired from the rainfall information providing server 60 in the subsequent step S301. Next, in step S302, the obtained rainfall information is converted into image data as necessary. In step S303, a series of past (predetermined period) image data and the rainfall information converted into image data in step S302 are linked. By doing so, the image data is time-series. Thereby, it is possible to obtain data in which time-series rainfall patterns are converted into image data.

  In subsequent step S304, an evaluation value calculation sub-run is executed. Here, the evaluation value (LEVEL) is a parameter that increases the warning level of damage based on rainfall as the value increases. Hereinafter, a description will be given based on the flowchart of FIG. FIG. 6 is a flowchart of the process of the evaluation value calculation subroutine of the alert system 1 according to the embodiment of the present invention.

  When the evaluation value calculation subroutine is started in step S400, in the next step S401, the current rainfall pattern obtained in step S302 and the past rainfall pattern “damaged” stored in the rainfall damage database 21 are stored. Make a comparison. In the next step S402, as a result of the comparison, it is determined whether or not there is a predetermined similarity between the two patterns. If the result of this determination is YES, the process proceeds to step S403, and the evaluation value (LEVEL) is set to “3”. On the other hand, if the determination result is NO, the process proceeds to step S404.

In step S404, the current rainfall pattern obtained in step S302 is compared with the “no damage” past rainfall pattern stored in the rainfall damage database 21. In the next step S405, it is determined as a result of the comparison whether or not there is a predetermined similarity between the two patterns. If the result of this determination is YES, the process proceeds to step S406, and the evaluation value (LEVEL) is set to “1”. On the other hand, if the determination result is NO, the evaluation value (LEVEL) is set to “2”, and the process returns to the original routine.

  In the alert system 1 according to the present invention, an alert may be notified based on the evaluation value (LEVEL) as described above. That is, when a high evaluation value is calculated, a certain alarm may be output to the output unit 19 including an LCD display. In the present embodiment, the evaluation value calculated in the evaluation value calculation sub-run is corrected based on the land characteristics, and then an alarm is notified.

  Now, after returning from the subroutine of step S304, it progresses to step S305 and a notification determination subrun is executed. Hereinafter, description will be given based on the flowchart of FIG. FIG. 6 is a view illustrating a flowchart of the process of the notification determination subroutine of the alert system 1 according to the embodiment of the present invention.

  When the notification determination subroutine is started in step S500, subsequently, in step S501, the land characteristics database 22 is referred to and the land characteristics (ground elevation, depression ratio, land use form, drainage capacity) of the corresponding area are related. Each parameter is retrieved.

  In subsequent step S502, the water retention rate of the corresponding area is calculated from the above ground elevation, depression ratio, land use form, and drainage capacity. Here, the water retention rate is a parameter that indicates how much water is stored and stored in a given area. It is low if the ground elevation is high, high if the depression is high, and seems to contain a lot of concrete components in the land use form. It is a parameter that is lower as the shape is lower and lower as the drainage capacity is higher. As for the formula for calculating the water retention rate, the water retention rate is lower when the ground elevation is higher, higher when the depression ratio is higher, lower in the form of concrete use in the land use form, and lower if the drainage capacity is higher. Any suitable calculation formula can be used.

  In step S503, it is determined whether or not the water retention rate calculated in step S502 is greater than or equal to a predetermined value. If the determination is YES, the process proceeds to step S505, and the evaluation value (LEVEL) is incremented by one. If the determination is NO, the process proceeds to step S504.

  In step S504, it is determined whether or not the water retention rate calculated in step S502 is equal to or less than a predetermined value. If the determination is YES, the process proceeds to step S507, and the evaluation value (LEVEL) is decremented by 1. If the determination is NO, the process proceeds to step S506, and the value of the evaluation value (LEVEL) is not changed and is deferred.

  In step S508, it is determined whether or not the evaluation value (LEVEL) is 3 or more. If the determination in step S508 is YES, the process proceeds to step S509, informing that “there is a possibility of damage” using the output unit 19 such as an LCD display, and the process returns.

  In step S510, it is determined whether or not the evaluation value (LEVEL) is 2. If the determination in step S510 is YES, the process proceeds to step S511 to notify that “there is no possibility of damage” using the output unit 19 such as an LCD display, and the process returns.

Further, when the process proceeds to step S512, that is, when the evaluation value (LEVEL) is 1, it is output and notified to the output unit 19 such as an LCD display as “no possibility of damage”, and the process proceeds to step S513. Advance and return.

  When returning from the notification determination subroutine as described above to the main routine, in step S306, it is determined whether or not there is a system process end request. If the determination is YES, the process proceeds to step S307 to end the process. If NO, the process returns to step S301.

  Even with the warning system 1 according to the second embodiment as described above, it is possible to effectively notify a warning based on information acquired from the rainfall information providing server 60, and as in the past, such as a rain gauge, a water level gauge, etc. Equipment and a computer with high processing capacity are not required, and it is possible to construct a system easily and inexpensively. Moreover, according to the alert system 1 which concerns on this invention, it becomes possible to alert | report an exact alert by a some alert level.

Further, matters that can be realized in the alert system 1 according to the present embodiment are summarized below.
(1) Not for the purpose of managing wide-area public infrastructure such as rivers and sewers, but for disaster prevention managers of individual buildings who do not have specialized knowledge, to easily know the possibility of damage (mainly inundation) due to heavy rain in their facilities It is a system for.
(2) Without requiring information collection, analysis, prediction and damage assessment work by specialist engineers, the disaster management manager of each building triggered a sudden collapse of the weather peculiar to guerrilla heavy rain (when the weather was noticed to be bad In addition, a determination result can be obtained in a short time by its own operation.
(3) A large amount of rainfall data, analysis modeling, and high-performance equipment (computer, etc.) necessary for various analyzes are not necessary, and it can be operated only with equipment (computer) and Internet connection environment at the daily work level.
(4) Rather than a black box-like detailed analysis result, the current rainfall and guerrilla heavy rain peculiar short-term rainfall results (past 10 minutes to 2 hours), past damage and the actual rainfall results at that time, Judged by statistical comparison. In particular, the guerrilla torrential rain that caused damage to the building in question is a regional pattern in which the rain cloud range shifts from a specific distance away from a specific distance away with a specific amount of rainfall. By creating a database, the possibility of damage can be determined in a short time.

Moreover, the following concepts are also included in the alert system 1 according to the present embodiment.
A.
(1) Means for collecting publicly available rainfall information immediately and automatically, (2) Means for collecting and analyzing the rainfall information by image processing, and (3) Topographic data of the area specified in advance Damage database combining local rainfall patterns and local rainfall patterns at the time of the occurrence of local heavy rains in the area-(4) Damage pattern and current rainfall pattern of the area in the past in this database A warning system comprising: means for comparative analysis / evaluation determination; and (5) means for displaying warning information after determination.
B.
Rainfall information is data published on the Web, and a warning system that automatically collects data at the start of work and time-series data within the past several hours upon request. C.
Based on the collected rainfall information, a warning area (rainfall passage area) set in advance is extracted, and the rainfall range, rainfall intensity, rainfall accumulation, etc. are automatically calculated using image processing techniques. Vigilance system.
D.
Rainfall damage-The regional information database includes the ground elevation, the depression ratio, and land use at the specified point, as well as the range and intensity of local rainfall in the past when some damage occurred, the amount of rainfall An alert system characterized by cumulative features.
E.
The determination of the possibility of occurrence of local heavy rain damage is based on the specific building and the surrounding area based on the rainfall pattern of the warning area (rainfall passage area) and the time series change of the rainfall amount set in advance for the specific building being warned. Warning system characterized by determining whether or not it is similar to that at the time of past damage.
F.
The warning information is a warning system that indicates whether or not some damage will occur due to local heavy rain in specific buildings and surrounding areas in the future.

DESCRIPTION OF SYMBOLS 1 ... Warning system, 10 ... System bus, 11 ... CPU (Central Processing Unit), 12 ... RAM (Random Access Memory), 13 ... ROM (Read Only Memory), 14 ... Communication control unit 15 ... Input control unit 16 ... Output control unit 17 ... External storage device control unit 18 ... Input unit 19 ... Output unit 20 ... External Storage device, 21 ... Rain damage database, 22 ... Land characteristics database, 50 ... Communication line, 60 ... Rain information providing server

Claims (4)

Rainfall information acquisition means for acquiring rainfall information about a predetermined area via a communication line;
Image processing means for imaging the current rainfall pattern in time series based on the rainfall information acquired by the rainfall information acquisition means;
An evaluation calculation unit that compares the current rainfall pattern imaged by the image processing unit with a past rainfall pattern in the region and calculates an evaluation value based on a comparison result;
A warning system comprising: notifying means for notifying an alarm according to the evaluation value calculated by the evaluation calculating means. Rainfall information acquisition means for acquiring rainfall information about a predetermined area via a communication line;
Image processing means for imaging the current rainfall pattern in time series based on the rainfall information acquired by the rainfall information acquisition means;
An evaluation calculation unit that compares the current rainfall pattern imaged by the image processing unit with a past rainfall pattern in the region and calculates an evaluation value based on a comparison result;
Evaluation value correction means for correcting the evaluation value calculated by the evaluation calculation means based on land characteristics in the area;
A warning system comprising: notifying means for notifying an alarm according to the evaluation value corrected by the evaluation value correcting means. The alert system according to claim 2, wherein the land characteristics in the area are ground elevation, depression ratio, land use form, and drainage capacity. The alert system according to claim 2 or 3, wherein there are a plurality of alert levels by the alert means.

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