JP2012141840A - Sudden flood risk avoidance system and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid any flood damage in advance by quickly detecting a local heavy rainfall on a road.SOLUTION: A flood detection device 10 installed on a road on which a vehicle passes is configured to measure the water level of a flood on the road, and to compare the increase rate of the pertinent water level with a preliminarily set risk increase rate, and to detect whether or not it is put in a flood risk state in which a flood may occur on the pertinent road due to a local heavy rainfall in accordance with the result of comparison, and a road information display device 20 installed on the road is configured to display a flood occurrence situation on the road with a character and pattern to the driver of the vehicle which passes on the pertinent road, and a flood road management device 30 connected via a communication network 50 to the flood detection device 10 and the road information display device 20 is configured to, in accordance with situation notification showing the flood risk state from the flood detection device 10, instruct display of the flood occurrence situation to the road information display device 20 installed at the pertinent flood occurrence spot.

Description

  The present invention relates to a traffic management technique, and more particularly to a sudden flood risk avoidance technique for avoiding the risk of flood damage caused by sudden torrential rain when a vehicle is at a road intersection or the like.

  In recent years, localized torrential rain (guerrilla heavy rain) has frequently occurred as a manifestation of abnormal weather, causing serious flood damage even in urban residential areas and roads. Flood damage due to localized torrential rain is mainly due to the low topographical conditions of the land, but also due to the insufficient drainage capacity of the sewer, as well as the uncertainty of weather phenomena, It is very difficult to predict flood events in advance due to the invisibility of the drainage capacity. Local flood damage caused by torrential rain is one of the disasters that can occur anywhere on the street.

  As for traffic vehicles on the road, there has been a painful accident that caused heavy rain at intersections, and even when trying to evacuate, they were unable to move due to water pressure and were submerged. As countermeasures against such flood damage for road and vehicle users, a flood warning device has been disclosed that attaches a water level detector to the bottom plate of the vehicle and automatically alerts the vehicle owner when flooded (for example, , See Patent Document 1). Moreover, in a parking lot, a system is disclosed in which inundation is detected by a water level sensor attached to a drainage tank and directly notified to an individual owner of each vehicle (see, for example, Patent Document 2).

Japanese Patent No. 3676320 Japanese Patent No. 3636994

  However, in such a conventional technology, since it only reports to owners on the site or owners away from the car, in case of sudden heavy rain (guerrilla heavy rain), There was a problem that there was a high possibility that it was too late when the danger was recognized. In addition, as described above, since the owner may not be able to escape damage while riding, there is a problem that the problem cannot be solved simply by notifying the water level information at the site.

  The present invention is intended to solve such problems, and it is an object of the present invention to provide a technique for avoiding sudden inundation risk that can quickly detect localized torrential rain on the road and avoid inundation damage in advance. .

  In order to achieve such an object, the sudden inundation risk avoidance system according to the present invention is installed on a road through which a vehicle passes, measures the water level flooded on the road, and determines the increase rate of the water level in advance. Compared with the set risk increase rate, and depending on the result of the comparison, an inundation detection device that detects whether the road is inundated due to heavy rain, and installed in the road or vehicle A road information display device for displaying inundation occurrence status in characters / designs for notifying a driver of a vehicle traveling on the road of the occurrence of inundation on the road, an inundation detection device, and a road information display device; Connected to each other via a communication network, and instructing the road information display device installed at the inundation occurrence point to indicate the inundation occurrence status in response to the status notification indicating the inundation risk state from the inundation detection device. And a flooded road management device.

  At this time, in the flooded road management device, display target selection information indicating the correspondence relationship between the flooding point and the road information display device installed on the road leading to the flooding point is stored in advance, and the status notification indicating the flooded danger state Accordingly, the road information display device corresponding to the inundation occurrence point may be selected based on the display target selection information, and the selected road information display device may be instructed to display the inundation occurrence status.

  In addition, the sudden inundation risk avoidance method according to the present invention is the risk that the inundation detection device installed on the road on which the vehicle passes measures the water level flooded on the road, and the rate of increase of the water level and the preset risk An inundation detection step for comparing the rate of increase and detecting whether or not the road is inundated due to torrential rain according to the comparison result, and a road information display device installed in the road or vehicle A road information display step for displaying the inundation occurrence state for notifying a driver of a vehicle traveling on the road in a character / design for notifying the occurrence of inundation on the road, an inundation detection device, and a road information display device In response to the situation notification indicating the inundation danger state from the inundation detection device, the inundation road management device connected to each other via the communication network with respect to the road information display device installed at the inundation occurrence point And a flooded road management step for instructing display of flooding occurrence.

  At this time, in the flooded road management step, display target selection information indicating the correspondence relationship between the flooded point and the road information display device installed on the road following the flooded point is stored in advance, and a status notification indicating the flooded danger state Accordingly, a step of selecting a road information display device corresponding to the inundation occurrence point based on the display target selection information and instructing the selected road information display device to display the inundation occurrence state may be included.

  ADVANTAGE OF THE INVENTION According to this invention, the local torrential rain on a road can be detected rapidly and the inundation generation | occurrence | production situation can be notified with respect to the vehicle which exists in the periphery of an inundation generation point. Therefore, it is possible to avoid inundation damage such as the vehicle entering the inundation occurrence point.

It is a block diagram which shows the structure of the sudden inundation risk avoidance system concerning 1st Embodiment. It is explanatory drawing of a water level detection method. It is an example of installation (perspective view) of a flood detection device and a road information display device. It is an example of installation (plan view) of a flood detection device and a road information display device. It is a flowchart which shows the inundation detection process in the inundation detection apparatus concerning 1st Embodiment. It is explanatory drawing which shows the change of the water level increase rate at the time of heavy rain. It is explanatory drawing which shows the change of the water level at the time of the end of torrential rain. It is a flowchart which shows the warning display instruction | indication process in the flooded road management apparatus concerning 1st Embodiment. It is an example of selection of a road information display device. It is an example of a display of a flood warning. It is a block diagram which shows the structure of the sudden inundation risk avoidance system concerning 2nd Embodiment. It is an example of a screen display of an inundation situation graph.

Next, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
First, a sudden inundation risk avoidance system according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the sudden inundation risk avoidance system according to the first embodiment.
The sudden inundation risk avoidance system 1 has a function of displaying an inundation occurrence state for avoiding the risk of inundation damage due to sudden torrential rain at a road intersection or the like.

  This embodiment is an inundation detection device installed on a road through which vehicles pass, measures the water level flooded on the road, and compares the rate of increase of the water level with a preset risk increase rate, According to the comparison result, it is detected whether the road is inundated due to heavy rain, and the road information display device installed on the road is used for the driver of the vehicle traveling on the road. The situation where the inundation occurrence on the road is displayed in characters and symbols, and the inundation detection device and the road information display device are connected to the inundation detection device and the road information display device via the communication network, respectively, indicating the inundation risk status from the inundation detection device In response to the notification, the road information display device installed at the inundation occurrence point is instructed to display the inundation occurrence state.

  Next, with reference to FIG. 1, the inundation detection apparatus 10, the road information display apparatus 20, and the inundation road management apparatus 30 which comprise the sudden inundation risk avoidance system concerning this Embodiment are each demonstrated in detail.

[Inundation detector]
The inundation detection device 10 is composed of a water level detection terminal having a communication function as a whole, is installed on a road through which a vehicle passes, measures the water level flooded on the road, and is set in advance as an increase rate of the water level. It has a function of comparing the risk increase rate and detecting whether or not it is a flooding danger state in which flooding can occur on the road due to concentrated heavy rain according to the comparison result.
The inundation detection apparatus 10 includes a water level detection unit 11, a data storage unit 12, and a data processing unit 13 as main functional units.

The water level detection unit 11 has a general water level sensor using ultrasonic waves or the like, and is installed on a road through which the vehicle passes, and has a function of measuring the water level flooded on the road.
FIG. 2 is an explanatory diagram of a water level detection method. Here, an ultrasonic water level gauge is used as the water level sensor, and the ultrasonic wave transmitted from the transmitter / receiver 11A of the water level sensor is reflected by the road 60 or the water surface 61 and received by the transmitter / receiver 11A, and the time required for the transmission / reception. Thus, the distance L0 to the road 60 and the distance L1 to the water surface 61 are calculated. Thereby, the water level LW can be calculated from the difference between the distance L0 and the distance L1.

  In general, an ultrasonic vehicle detector is installed as a traffic sensor on a road through which vehicles pass. This is a sensor that detects the presence of a vehicle from the difference in the round-trip time of ultrasonic waves, and is currently most frequently used. The principle of this ultrasonic vehicle sensor may be applied as a water level sensor. If the water level rises (by several centimeters) due to heavy rain, the water level can be measured from the difference in the round-trip time of the ultrasonic waves. If this vehicle sensor is also commonly used as a water level sensor, the existing vehicle sensor can be used effectively, and the introduction cost can be greatly reduced. Of course, the water level sensor is not limited to this, and a water level sensor of an arbitrary type may be used in the present system.

  As for the installation location of the water level detection unit 11, in addition to the method of installing the above type of water level sensor in an aerial manner, another type of water level sensor may be installed on the ground or in an underground structure. For example, a rapid increase in the sewage level can be detected by installing a submersible water level sensor in the underground sewer. Alternatively, a water level sensor may be installed in an underground cave or manhole where power cables and communication cables are laid.

The data storage unit 12 includes a storage device such as a semiconductor memory, and has a function of sequentially accumulating water level data measured by the water level detection unit 11 together with the measurement time.
The data processing unit 13 includes an arithmetic processing circuit such as a CPU, and calculates a water level increase rate indicating a water level change per unit time based on a time change of the water level data accumulated in the data storage unit 12; A function of detecting whether or not the inundation danger state that can cause inundation on the road due to the heavy rain by comparing the obtained water level increase rate with a risk increase rate preset in the data storage unit 12; It has a function of notifying the inundated road management device 30 by data communication via the communication network 50 of the inundation situation obtained by adding the water level and the water level increase rate at the detection time to the detection result indicating the dangerous state.

[Road information display device]
The road information display device 20 as a whole consists of a general road information display device that displays various information such as traffic information in characters and symbols, and is installed on the road and is for the driver of the vehicle passing through the road. In addition, it has a function of displaying the inundation occurrence status for notifying the occurrence of inundation on the road in characters and symbols.

The road information display device 20 includes a data receiving unit 21 and an information display unit 22 as main functional units.
The data receiving unit 21 has a function of receiving an instruction to display the inundation occurrence status from the flooded road management device 30 by performing data communication with the flooded road management device 30 via the communication network 50.
The information display unit 22 is composed of an electric display device such as an LED matrix, and in response to a display instruction of the inundation occurrence status from the inundated road management device 30 received by the data receiving unit 21, to the driver of the vehicle traveling on the road On the other hand, it has a function of displaying the inundation occurrence state for notifying the occurrence of inundation on the road in characters and symbols.

  About the road information display apparatus 20, in the case of a highway and a main road, you may utilize the existing lightning display board. In addition, the road information display apparatus 20 is not restricted only to these installation light-emitting display boards. An in-vehicle information terminal may be used as long as it has a mechanism capable of distributing / receiving information by limiting the area. For example, on an expressway, there is roadside broadcasting (frequency 1620 kHz) that broadcasts in a certain section from an antenna installed on the shoulder or center line. The risk information may be transmitted from a roadside broadcasting antenna at an appropriate position and received by a nearby in-vehicle radio.

  In recent years, Vehicle Information and Communication System (abbreviated as VICS) has become widespread, and traffic traffic information such as traffic jam information is transmitted by beacons (light and radio waves) installed on the road. There is a system for displaying information (characters and graphics) on an in-vehicle device such as a car navigation system. Using this system, the risk information may be transmitted from a beacon at an appropriate position and received by a corresponding in-vehicle information terminal passing therethrough.

  FIG. 3 is an installation example (perspective view) of the inundation detection device and the road information display device. FIG. 4 is an installation example (plan view) of the inundation detection device and the road information display device. For example, as shown in FIG. 4, the inundation detection device 10 and the road information display device 20 are installed in a mesh pattern on a road such as an intersection. Although the inundation detection device 10 and the road information display device 20 do not necessarily have to be at the same point, it is efficient to install them at the same point for the convenience of installation. In addition, at least one inundation detection device 10 may be installed in the same area (intersection), but the road information display device 20 has directionality and is installed in consideration of the direction for each lane.

[Inundated road management device]
The flooded road management device 30 includes an information processing device such as a server device and a personal computer having a data communication function as a whole, and is connected to the flooding detection device 10 and the road information display device 20 via the communication network 50 to detect flooding. In response to the status notification indicating the inundation risk state from the device 10, the road information display device 20 installed at the inundation occurrence point is instructed to display the inundation occurrence status for notifying the occurrence of inundation on the road. It has a function to do.
The flooded road management device 30 includes a data collection unit 31, a data storage unit 32, and an alarm display instruction unit 33 as main functional units.

The data collection unit 31 has a function of receiving a flooding status from the flooding detection device 10 by performing data communication with the flooding detection device 10 via the communication network 50.
The data storage unit 32 includes a storage device such as a hard disk or a semiconductor memory. The data storage unit 32 sequentially accumulates the inundation status received by the data collection unit 31, and the road information installed on the inundation occurrence point and the road leading to the inundation occurrence point. It has a function of preliminarily storing display target selection information indicating a correspondence relationship with the display device 20.

  When the inundation occurrence status is displayed on the road information display device 20, it is necessary to display the inundation occurrence status to the driver of the vehicle heading to the inundation occurrence point in order to avoid a sudden inundation risk. Therefore, among the road information display devices 20 installed around the inundation occurrence point, the road information display device 20 installed on the road through which the vehicle heading to the inundation occurrence point passes is selected and the inundation occurrence status is displayed. This is most important to avoid the risk of sudden inundation.

  In the present embodiment, the correspondence relationship between the inundation occurrence point and the road information display device 20 is registered in advance in the display target selection information, and the inundation situation indicating the inundation risk state notified from the inundation detection device 10 is obtained. The road information display device 20 corresponding to the inundation occurrence point specified based on is selected. In addition, the method for identifying the inundation occurrence point is, for example, facility information indicating the correspondence between the identification ID of the inundation detection device 10 that is a notification source of the inundation situation and its installation location, that is, the inundation occurrence point. May be registered in the data storage unit 32 in advance. In addition, when the road information display device 20 is an in-vehicle information terminal, a correspondence relationship with a roadside broadcast antenna or beacon installed on a road leading to the inundation point may be registered in the facility information.

  The alarm display instruction unit 33 refers to the display target selection information in the data storage unit 32 in response to the situation notification indicating the inundation risk state from the inundation detection device 10, thereby corresponding to the inundation occurrence point where the inundation has occurred. By performing data communication with the road information display device 20 selected via the communication network 50 and the function for selecting the road information display device 20, the road information display device 20 is notified of the occurrence of flooding on the road. A function of instructing the display of the occurrence of inundation for the purpose.

[Operation of First Embodiment]
Next, operation | movement of the sudden inundation risk avoidance system 1 concerning this Embodiment is demonstrated.
First, with reference to FIG. 5, the inundation detection operation in the inundation detection device will be described. FIG. 5 is a flowchart showing the inundation detection process in the inundation detection apparatus according to the first embodiment.
The data processing unit 13 of the inundation detection apparatus 10 executes the inundation detection process shown in FIG. In addition, although the water level detection part 11 of the inundation detection apparatus 10 shall measure the water level regularly, you may measure a water level according to the instruction | indication from the data processing part 13. FIG.

  The water level detection unit 11 measures the water level and accumulates it in the data storage unit 12 (step 100). The data processing unit 13 acquires the latest water level data from the data storage unit 12, and confirms whether or not the water level has risen by comparing with the water level data of the previous measurement (step 101). If the water level fluctuation has not risen from the previously measured water level (step 101: NO), the process returns to step 100.

  On the other hand, when the water level fluctuation has risen from the previously measured water level (step 101: YES), after the water level is newly measured by the water level detection unit 11 (step 102), the data processing unit 13 obtains the latest obtained level. Based on the water level data and the water level data measured in the past or in the past, a water level increase rate indicating a change in the water level per unit time is calculated (step 103), and the obtained water level increase rate is stored in the data storage unit 12 in advance. By comparing with the set risk increase rate, it is detected whether or not the inundation danger state that can cause inundation on the road due to the heavy rain (step 104).

  FIG. 6 is an explanatory diagram showing a change in the water level increase rate at the time of occurrence of torrential rain. The horizontal axis indicates time, the left vertical axis indicates the water level increase rate, and the right vertical axis indicates the water level. Here, a characteristic F11 indicating a change in the water level increase rate when a heavy rain occurs and a characteristic F12 indicating a change in the water level are shown.

  Sudden torrential downpours have the characteristic that the water level rises to a significant height after a sudden rise in water level. At this time, when the dangerous water level is set with respect to the water level, the occurrence of inundation is detected only at time T2 when the water level of the characteristic F12 reaches the dangerous water level. On the other hand, in the present embodiment, a risk increase rate is set for the water level increase rate, and the presence or absence of inundation is detected according to the comparison result between the water level increase rate and the risk increase rate of the characteristic F11. Thereby, inundation generation | occurrence | production can be detected in the time T1 earlier than the time T2. Therefore, detecting the rate of increase of the water level can be detected earlier as an event than observing the absolute water level. If the danger can be detected early, the risk can be avoided or the damage can be reduced.

Therefore, when the water level increase rate is lower than the risk increase rate (step 104: NO), the data processing unit 13 determines that the inundation risk state where the inundation may occur on the road due to the concentrated heavy rain and returns to step 102.
On the other hand, when the water level increase rate has reached the danger increase rate (step 104: YES), the data processing unit 13 determines that the inundation risk state is likely to cause inundation on the road due to the heavy rain, and sets the inundation risk state. The inundation situation in which the water level and the water level increase rate are added to the detection result shown is notified to the inundated road management device 30 via the communication network 50 (step 110).

  Thereafter, after the water level is newly measured by the water level detection unit 11 (step 111), the data processing unit 13 determines the unit based on the latest water level data obtained and the water level data measured in the past or earlier. A water level increase rate indicating a change in water level per hour is calculated (step 112), and the obtained water level increase rate is compared with zero to confirm a decrease in the water level on the road (step 113).

Here, when the drop in the water level is not confirmed (step 113: NO), the data processing unit 13 returns to step 110, adds the water level and the water level increase rate to the detection result indicating the inundation risk state, and the communication network 50. To the flooded road management device 30 again.
On the other hand, if a drop in the water level is confirmed (step 113: YES), the data processing unit 13 compares the latest water level with the dangerous water level to determine whether or not there is a flooding dangerous state where flooding may occur on the road due to heavy rain. Is detected (step 114).

  FIG. 7 is an explanatory diagram showing changes in the water level at the end of the torrential rain. The horizontal axis indicates time, the left vertical axis indicates the water level increase rate, and the right vertical axis indicates the water level. Here, a characteristic F21 indicating a change in the water level increase rate at the end of the torrential rain and a characteristic F22 indicating a change in the water level are shown.

  At the end of the torrential rain, the water level gradually decreases and the rate of increase in the water level shows a negative value. As such, there may be no significant change in the water level increase rate. Therefore, in the present embodiment, by checking whether or not the characteristic F22 indicating the absolute water level is lower than the dangerous water level, the road is not flooded due to torrential rain, and the road can be passed by the vehicle. It is detected whether it is a safe situation.

  Therefore, as shown at time T3, when the water level falls below the dangerous water level (step 114: YES), the data processing unit 13 is inundated safety that the road is not flooded by the heavy rain and the road can be passed by the vehicle. The inundation road management device 30 is notified via the communication network 50 of the inundation status obtained by adding the water level and the water level increase rate to the detection result indicating the inundation safety state. ) And return to Step 100. Thereby, it returns to an initial state and confirmation of the presence or absence of a water level rise is restarted.

Next, with reference to FIG. 8, the alarm display instruction | indication operation | movement in the flooded road management apparatus 30 in the sudden flood risk avoidance system 1 concerning this Embodiment is demonstrated. FIG. 8 is a flowchart showing an alarm display instruction process in the flooded road management device according to the first embodiment.
The warning display instruction unit 33 of the flooded road management device 30 executes the warning display instruction process shown in FIG. 8 in response to the notification of the flooded state from the flooded detection device 10.

  The alarm display instruction unit 33 acquires the latest inundation status received from the inundation detection device 10 by the data collection unit 31 from the data storage unit 32, and refers to, for example, facility information registered in advance in the data storage unit 32, The inundation occurrence point corresponding to the inundation detection device 10 that is the notification source of the inundation status is specified (step 200).

Subsequently, the alarm display instruction unit 33 refers to the target selection information registered in advance in the data storage unit 32, for example, and selects the road information display device 20 corresponding to the inundation occurrence point (step 201).
FIG. 9 shows a selection example of the road information display device. Here, since the inundation detection device 10 is the notification source of the inundation situation, for example, the road information display device 20 located within the circle A having a predetermined radius from the nearest intersection P is selected based on the target selection information. . As a result, inundation occurrence at the intersection P is displayed on the road information display device 20 installed at the intersections P1 to P3 adjacent to one block of the intersection P, so the driver is informed of the occurrence of inundation before the intersection P. Will be.

  Thereafter, the alarm display instruction unit 33 checks whether or not the detection result of the inundation status indicates an inundation risk state (step 202). Here, when the detection result of the inundation state indicates an inundation danger state (step 202: YES), the alarm display instruction unit 33 notifies the selected road information display device 20 of the occurrence of inundation on the road. Is displayed via the communication network 50 (step 203), and a series of alarm display instruction processing is terminated.

  FIG. 10 is a display example of a flood warning. In this case, the road information display device 20 displays characters and symbols indicating that entry is prohibited due to flooding on the road ahead due to sudden torrential rain. Thereby, the vehicle approach to the inundation occurrence point can be prevented in advance, and the sudden inundation risk can be avoided.

On the other hand, when the detection result of the inundation state indicates the inundation safety state (step 202: NO), the alarm display instruction unit 33 cancels the display of the inundation alarm to the selected road information display device 20, and the communication network 50 (Step 210), and a series of alarm display instruction processing ends.
Thereby, the display of the inundation warning on the road information display device 20 is completed, or the fact that the inundation alarm has been canceled is displayed on the road information display device 20 with characters and symbols.

[Effect of the first embodiment]
As described above, in this embodiment, the inundation detection device 10 installed on the road on which the vehicle passes measures the water level flooded on the road, and the increase rate of the water level and the preset risk increase rate A vehicle that passes through the road with the road information display device 20 installed on the road. The inundation occurrence state on the road is displayed to the driver of the vehicle in characters and designs, and the inundation road management device 30 connected to the inundation detection device 10 and the road information display device 20 via the communication network 50 respectively, In response to the status notification indicating the inundation risk state from the detection device 10, the display of the inundation occurrence status is instructed to the road information display device 20 installed at the inundation occurrence point.

  As a result, it is possible to promptly detect local torrential rain on the road and notify the vehicle existing around the inundation occurrence point of the inundation occurrence state. Therefore, it is possible to avoid inundation damage such as the vehicle entering the inundation occurrence point.

Further, in the present embodiment, the flooded road management device 30 stores in advance display target selection information indicating a correspondence relationship between the flood occurrence point and the road information display device 20 installed on the road leading to the flood occurrence point. In response to the status notification indicating the inundation risk state, the road information display device 20 corresponding to the inundation occurrence point is selected based on the display target selection information, and the inundation occurrence status is displayed on the selected road information display device 20. May be instructed.
As a result, not only vehicles existing around the inundation point, but also vehicles traveling on the road to the inundation point can be accurately notified of the inundation situation, and inundation damage can be avoided in advance. It becomes possible to do.

[Second Embodiment]
Next, a sudden inundation risk avoidance system 1 according to a second embodiment of the present invention will be described with reference to FIG. FIG. 11 is a block diagram illustrating a configuration of the sudden inundation risk avoidance system according to the second embodiment.

In the first embodiment, the case where the inundation occurrence state is displayed on the road information display device 20 has been described. In the present embodiment, a case where the inundation occurrence state is displayed on the screen by the flooded road management device 30 will be described.
In the present embodiment, the flooded road management device 30 is provided with a flooded state generating unit 34 and a screen display unit 35.

  The inundation status generation unit 34 has a function of acquiring the status notification received from each of the inundation detection devices 10 by the data collection unit 31 from the data storage unit 32, a function of acquiring the water level increase rate included in these status notifications, It has a function of specifying the inundation occurrence point of the water level increase rate notified by the situation notification and a function of generating an inundation situation graph in which the water level increase rate is plotted for each inundation occurrence point.

The screen display unit 35 includes a screen display device such as an LCD, and has a function of displaying the inundation status graph generated by the inundation status generation unit 34 on the screen.
In the sudden inundation risk avoidance system 1 according to the present embodiment, the configuration of the inundation detection device 10 and the road information display device 20 other than the inundation road management device 30 is the same as that of the first embodiment. Detailed description here is omitted.

FIG. 12 is a screen display example of the inundation status graph. Here, among the three-dimensional bar graphs of X, Y, and Z, streets (roads) in the management area are assigned in the X direction and the Y direction, and each inundation occurrence point is at a position where these streets intersect. Has been placed. And the water level increase rate in each inundation generation | occurrence | production point is displayed on the Z direction.
Thereby, the inundation situation or heavy rain situation (increase rate) in the management area can be overlooked, and the inundation occurrence situation can be easily confirmed.

[Extended embodiment]
The present invention has been described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Sudden inundation risk avoidance system, 10 ... Inundation detection apparatus, 11 ... Water level detection part, 12 ... Data storage part, 13 ... Data processing part, 20 ... Road information display apparatus, 21 ... Data reception part, 22 ... Information display part 30 ... Inundated road management device, 31 ... Data collection unit, 32 ... Data storage unit, 33 ... Alarm display instruction unit, 34 ... Inundation status generation unit, 35 ... Screen display unit, 50 ... Communication network.

Claims (4)

Installed on the road where the vehicle passes, measures the water level flooded on the road, compares the rate of increase of the water level with the preset risk increase rate, and according to the comparison result, An inundation detection device that detects whether or not the road is inundated and can be inundated; and
A road information display device that is installed in the road or vehicle and displays the inundation occurrence state in characters / designs for notifying the driver of the vehicle passing through the road of the inundation;
The road information display connected to the inundation detection device and the road information display device via the communication network, and the road information display installed at the inundation occurrence point in response to a situation notification indicating the inundation danger state from the inundation detection device A sudden inundation risk avoidance system comprising: an inundation road management device that instructs the device to display the inundation occurrence status. In the sudden inundation risk avoidance system according to claim 1,
The flooded road management device stores in advance display target selection information indicating a correspondence relationship between the flooded occurrence point and the road information display device installed on a road leading to the flooded occurrence point, and indicates the flooded danger state In response to the notification, the road information display device corresponding to the inundation occurrence point is selected based on the display target selection information, and the selected road information display device is instructed to display the inundation occurrence status. Sudden inundation risk avoidance system. The inundation detection device installed on the road where the vehicle passes measures the water level flooded on the road, compares the increase rate of the water level with a preset risk increase rate, and according to the comparison result An inundation detection step for detecting whether or not the road is inundated due to torrential rain;
A road in which the road information display device installed in the road or the vehicle displays the inundation occurrence status for notifying the driver of the vehicle traveling on the road of the occurrence of the inundation on the road in characters / designs An information display step;
An inundated road management device connected to the inundation detection device and the road information display device via a communication network is installed at the inundation occurrence point in response to a situation notification indicating an inundation risk state from the inundation detection device. And a flooded road management step for instructing the road information display device to display the flooding occurrence status. In the sudden inundation risk avoidance method according to claim 3,
The flooded road management step stores in advance display target selection information indicating a correspondence relationship between the flooded spot and the road information display device installed on a road that leads to the flooded spot, and indicates the flooded state In response to the notification, the road information display device corresponding to the inundation occurrence point is selected based on the display target selection information, and the selected road information display device is instructed to display the inundation occurrence status. Sudden inundation risk avoidance method characterized by this.