JP2012216103A - Submerged road predicting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a submerged road predicting system capable of predicting a submergence occurrence on a travel route on which a vehicle is moving, without using detecting means such as a submergence sensor.SOLUTION: Windshield wiper use information detecting means detects a wiping speed and operating time of vehicle windshield wipers as windshield wiper use information at the time of rainfall. A transmitter/receiver adds current position data of an own vehicle to the detected windshield wiper use information to transmit the information, and receives windshield wiper use information with current position data from other vehicles. Determining means determines whether other preceding vehicles are moving on the same travel route from the current position data of the received windshield wiper use information with the current position data. Windshield wiper use information extracting means extracts the windshield wiper use information from the determined windshield wiper use information of the other vehicles, rainfall amount calculating means calculates a predicted amount of rainfall on the travel route and in its surrounding area based on the windshield wiper use information, and submergence predicting means predicts whether or not submergence occurs on the travel route based on the predicted amount of rainfall.

Description

  The present invention relates to a submergence prediction system for predicting submergence of a vehicle traveling road surface due to rain, and more specifically, it is possible to predict at least the occurrence of submergence on a travel route on which a vehicle travels based on the wiper usage status of the vehicle. The present invention relates to a submergence channel prediction system.

  On roads with depressions, such as roads under guards, the road surface is flooded by the inflow of rainwater due to sudden rain, making it impossible for vehicles to enter and for vehicles to accidentally enter the flooded water. In such a case, rainwater enters the exhaust system or electrical system of the vehicle, causing a vehicle failure and making it impossible to travel. As a result, it causes various problems such as traffic congestion.

Conventionally, as a technique for solving such a problem, a road traffic information system shown in Patent Document 1 is known.
In this type of road traffic information system, a navigation system capable of communicating with a submersion sensor and a center server is installed in each vehicle. When the submersion sensor detects flooding on the road surface, the navigation system The position information detected by the vehicle, the flood information detected by the flood sensor, and the vehicle height information are transmitted to the center server. Then, the center server estimates the inundation location based on each of the above-mentioned information, calculates the inundation depth, transmits the information on the inundation location and the inundation depth to another vehicle, and the vehicle A detour route that does not pass the flooded road is set, and the detour route is guided.

  In addition, as a conventional technology, a flood detection device is installed near the road, and an electromagnetic wave transmitted from an active RFID (Radio-Frequency Identification) that constitutes the flood detection device is received by a receiver. A flooding detection method for detecting flooding on a road from a change is known (see Patent Document 2).

Japanese Patent Laid-Open No. 2004-341795 JP 2010-156672 A

However, in the conventional road traffic information system as described above, it is necessary to equip the vehicle with a flood sensor for directly detecting flood on the road, which is disadvantageous in terms of cost.
In addition, in the flood detection method disclosed in Patent Document 2, an active RFID (Radio-Frequency Identification) is embedded in a concrete layer of a paved road, and a receiver that receives electromagnetic waves transmitted from the active RFID is located beside the road. It is necessary to install it, which is disadvantageous in terms of cost.

  The present invention has been made in view of the above points, and provides a submergence channel prediction system that can predict the occurrence of submergence on a travel route on which a vehicle travels without using a detection means such as a submergence sensor. With the goal.

  In order to achieve the above object, the present invention is directed to a case where a plurality of vehicles including a host vehicle and a plurality of other vehicles preceding the host vehicle are traveling in the same direction on the same traveling route including a flooded place. A submergence prediction system for predicting submergence on the traveling road surface of the vehicle, wherein the wiper use information detection means is provided for each of the vehicles, and detects wiper wiping speed and operation time of the vehicle at the time of rain as wiper use information. A navigation device that is provided for each vehicle and detects at least the current position on the travel route of the vehicle as current position data of the own vehicle; and the wiper use information detection means for the own vehicle provided for each vehicle. The current position data transmitted from the other vehicle is transmitted by adding the current position data detected by the navigation device of the own vehicle to the wiper usage information detected in A transmitter / receiver for receiving wiper usage information with position data and a current position data of wiper usage information with current position data of other vehicles provided for each vehicle and received by the transmitter / receiver preceding the own vehicle. Determination means for determining whether or not another vehicle is traveling on the same travel route; and a current state of the other vehicle that is provided for each vehicle and is determined to be traveling on the same travel route by the determination means Wiper usage information extracting means for extracting wiper usage information from wiper usage information with position data, and the travel route provided for each vehicle and based on the wiper usage information extracted by the wiper usage information extracting means A rainfall amount calculating means for calculating a predicted rainfall amount in the surrounding area, and a pre-estimated rainfall amount provided for each vehicle and based on the predicted rainfall amount calculated by the rainfall amount calculating means. A submergence prediction means for predicting whether or not submergence occurs at a place where the submergence occurs on the travel route; and a prediction result of the submergence prediction means provided to each of the vehicles and informing the vehicle behind the other vehicle And an informing means for performing the operation.

  According to the submergence channel prediction system of the present invention, since the submergence is predicted from the wiper usage information of the vehicle that actually travels, the vehicle travels without installing a submergence sensor on the road as in the past. The occurrence of flooding on the route can be predicted, which is advantageous in terms of cost.

It is the schematic which shows the structure of the whole system at the time of applying the submergence channel prediction system concerning this invention to the generation | occurrence | production prediction of the submergence of the driving | running route which the other vehicle ahead of the own vehicle and this vehicle travels. It is a block diagram which shows the structure of the own vehicle carrying the submergence channel prediction system concerning this invention. It is a block diagram which shows the structure of the other vehicle carrying the flooding channel prediction system concerning this invention. It is a flowchart which shows the prediction process sequence in the own vehicle by the submerged channel prediction system concerning this invention. It is a flowchart which shows the prediction process procedure in the other vehicle by the submergence channel prediction system concerning this invention.

(Embodiment 1)
Hereinafter, embodiments of a submergence channel prediction system according to the present invention will be described in detail with reference to FIGS.
In FIG. 1, reference numeral 12 denotes a travel route corresponding to a general road, an expressway, or the like on which various vehicles travel. On this travel route 12, a vehicle that receives wiper usage information, that is, the own vehicle 14, and a plurality of wiper usage information transmission vehicles that travel ahead from the own vehicle 14, for example, about 500 m to 1000 m, that is, other vehicles. 16 run in the same direction.
In addition, the traveling route 12 includes a road having a depression surface such as a flooded place 18, for example, a road under a guard, from a road shape where flooding is predicted to occur due to rapid rain or inflow of rainwater. The data of the flooding place 18 is written in advance in the map data of the travel route 12.

  As shown in FIG. 2, the own vehicle 14 includes a wiper usage information detection unit 1402, a navigation device 1404, a transceiver 1406, a determination unit 1408, a wiper usage information extraction unit 1410, a rainfall amount calculation unit 1412, a flooding prediction unit 1414, a notification. A unit 1416, a display unit 1418, an avoidance route search unit 1420, and the like are included. And these are set to the operation mode by turning on the power to the submergence channel prediction system.

The wiper usage information detection means 1402 calculates the product of the wiping speed v1 of the wiper 14A driven according to the amount of rain that the windshield of the vehicle 14 pours down due to rain, and the operating time t1 that is operating at this wiping speed v1. It is detected as wiper usage information for rainfall prediction.
The operation time t1 of the wiper 14A is obtained by counting the time from the time when the wiper 14A starts to operate at a medium to high wiping speed by the timer 1422.

  Specifically, each switching signal output from the wiper switching means 14B that switches the wiper 14A stepwise from the minimum wiping speed to the maximum wiping speed is set in advance according to the amount of rainfall falling on the front glass of the vehicle 14. The data is digitized as the rain data, and a data table representing the relationship between the digitized rain data and each switching signal is created, and this data table is searched using the switching signal from the wiper switching means 14B as a pointer. Then, the wiping speed v1 of the wiper 14A is obtained.

In this case, when the amount of rainfall is small, such as light rain, and the wiper 14A is operated at an intermittent or low-speed wiping speed, the submergence generation place 18 of the travel route 12 is not submerged. The rainfall data is not digitized for the speed switching signal. Further, when the wiper 14A is operated at a medium-to-high speed wiping speed, flooding often occurs in the submergence generation place 18 of the travel route 12, so that each switching when the wiper 14A is operated at a medium-to-high speed wiping speed is performed. What is necessary is just to prepare the data table which digitized the signal as rain data.
Therefore, in the wiper use information detecting unit 1402 in the present embodiment, when the wiper 14A is operated with the intermittent or low speed wiping speed, the detection of the wiping speed is invalidated, and the wiper 14A has the medium speed. When a high wiping speed is set, the data table is searched using the switching signal from the wiper switching means 14B as a pointer, and the wiping speed v1 of the wiper 14A is obtained. The wiper usage information detection unit 1402 has a determination function for determining whether or not the wiper 14A is operating at a medium to high wiping speed.
Note that the amount of rainfall per hour when the wiper 14A is operated at a medium to high wiping speed is, for example, 10 mm / hour or more.

The navigation device 1404 detects at least the current position of the host vehicle 14 on the travel route 12 as the current position data of the host vehicle 14.
The navigation device 1404 includes a conventionally known central processing unit (CPU), a GPS receiver for position measurement, a map database, a direction sensor, a distance sensor, an input unit (not shown) as a man-machine interface, and A display portion 1418 is included.
The navigation device 1404 includes a receiver 1404A that receives weather information of the travel route 12. As a result, the rainfall calculation means 1412 described later captures the precipitation data of the weather information received by the receiver 1404A as a correction coefficient for the predicted rainfall, and travels based on this correction coefficient and the wiper usage information from the other vehicle 16. The predicted rainfall amount in the route 12 and the surrounding area can be calculated more accurately.

The transceiver 1406 adds the current position data of the host vehicle 14 detected by the navigation device 1404 to the wiper usage information detected by the wiper usage information detection unit 1402 of the host vehicle 14 and transmits it. The wiper usage information with the current position data transmitted is received.
The determination unit 1408 determines whether or not the other vehicle 16 preceding the own vehicle 14 is traveling on the same travel route 12 based on the current position data of the wiper usage information with current position data of the other vehicle 16 received by the transceiver 1406. Judgment.

The wiper usage information extraction unit 1410 extracts the wiper usage information from the wiper usage information with current position data of the other vehicle 16 determined by the determination unit 1408 as traveling on the same travel route 12.
The rainfall amount calculating unit 1412 calculates a predicted rainfall amount in the traveling route 12 and its surrounding area based on the wiper usage information extracted by the wiper usage information extracting unit 1410 and the correction coefficient described above.

The submergence prediction unit 1414 predicts whether submergence occurs at the submergence generation place 18 existing on the travel route 12 based on the predicted rainfall calculated by the rainfall calculation unit 1412.
The notification means 1416 notifies the own vehicle 14 located behind the other vehicle 16 of the prediction result as to whether or not the submergence occurs at the submergence generation place 18.
The avoidance route search means 1420 is another road that can avoid a depression such as a road under the guard based on the map data from the navigation device 1404 when the flood inundation prediction means 1414 predicts that the inundation will occur at the inundation occurrence place 18. That is, the avoidance route is searched from the road map.

  The determination unit 1408, the wiper usage information extraction unit 1410, the rainfall amount calculation unit 1412, the flooding prediction unit 1414, and the avoidance route search unit 1420 are realized by a microcomputer. In other words, the microcomputer includes a CPU, a ROM, a RAM, an interface, and the like connected via a bus line. The ROM stores a process or control program executed by the CPU, a data table representing the relationship between the rainfall data and each switching signal, and the RAM provides a working area. When the CPU executes the flooding prediction process or the control program, the determination unit 1408, the wiper usage information extraction unit 1410, the rainfall amount calculation unit 1412, the flooding prediction unit 1414, and the avoidance route search unit 1420 are realized.

  As shown in FIG. 3, the other vehicle 16 includes a wiper usage information detection unit 1602, a navigation device 1604, a transceiver 1606, a determination unit 1608, a wiper usage information extraction unit 1610, a rainfall amount calculation unit 1612, a flooding prediction unit 1614, a notification. A unit 1616, a display unit 1618, an avoidance route search unit 1620, and the like are included. And these are set to the operation mode by turning on the power to the submergence channel prediction system.

The wiper usage information detection means 1602 is similar to the wiper usage information detection means 1402 on the own vehicle side, and the wiper speed 16 of the wiper 16A driven according to the amount of rain that the windshield of the other vehicle 16 pours down due to rain, The product of the wiper 16A operating at the speed v2 and the operating time t2 is detected as wiper use information for rainfall prediction.
The operation time t2 of the wiper 16A is obtained by counting the time from the time when the wiper 16A starts operating at a medium to high wiping speed by the timer 1622.

  Specifically, as in the case of the wiper 14A, the rain that drops each switching signal from the wiper switching means 16B that switches the wiper 16A stepwise from the minimum wiping speed to the maximum wiping speed onto the front glass of the vehicle 16 A data table is generated that represents the relationship between the digitized rainfall data and each switching signal, and the data table is used as a switching signal from the wiper switching means 16B. By searching as a pointer, the wiping speed v2 of the wiper 16A is obtained.

The navigation device 1604 detects at least the current position of the other vehicle 16 on the travel route 12 as current position data of the other vehicle 16.
The navigation device 1604 includes a conventionally known central processing unit (CPU), a GPS receiver for position measurement, a map database, an orientation sensor, a distance sensor, an input unit (not shown) as a man-machine interface, and A display portion 1618 is included.
The navigation device 1604 includes a receiver 1604A that receives weather information of the travel route 12. As a result, the rainfall calculation means 1612 described later takes the precipitation data of the weather information received by the receiver 1604A as a correction coefficient for the predicted rainfall, and travels based on the correction coefficient and the wiper usage information from the other vehicle 16. The predicted rainfall amount in the route 12 and the surrounding area can be calculated more accurately.

The transceiver 1606 adds the current position data of the other vehicle 16 detected by the navigation device 1604 to the wiper usage information detected by the wiper usage information detecting means 1602 of the other vehicle 16 and transmits the wiper usage information. The wiper usage information with the current position data transmitted from the other vehicle traveling ahead is received.
The determination means 1608 uses the same current position data of the wiper use information with current position data of the other vehicle traveling ahead of the other vehicle 16 received by the transceiver 1606 as the other vehicle traveling ahead of the other vehicle 16. It is determined whether or not the travel route 12 is traveling.

The wiper usage information extraction unit 1610 extracts the wiper usage information from the wiper usage information with current position data of other vehicles determined by the determination unit 1608 as traveling on the same travel route 12.
The rainfall amount calculating unit 1612 calculates the predicted rainfall amount in the travel route 12 and its surrounding area based on the wiper usage information extracted by the wiper usage information extracting unit 1610 and the correction coefficient described above.

The submergence prediction unit 1614 predicts whether submergence occurs at the submergence generation place 18 existing on the travel route 12 based on the predicted rainfall calculated by the rainfall calculation unit 1612.
The notifying means 1616 notifies the vehicle located behind the other vehicle 16 of the prediction result as to whether or not flooding will occur at the flooded place 18.
The avoidance route search means 1620 is another road that can avoid a depression such as a road under the guard based on the map data from the navigation device 1604 when the flood inundation prediction means 1614 predicts that inundation will occur at the inundation occurrence place 18. That is, the avoidance route is searched from the road map.

  The determination unit 1608, the wiper use information extraction unit 1610, the rainfall amount calculation unit 1612, the flooding prediction unit 1614, and the avoidance route search unit 1620 are realized by a microcomputer. In other words, the microcomputer includes a CPU, a ROM, a RAM, an interface, and the like connected via a bus line. The ROM stores a process or control program executed by the CPU, a data table representing the relationship between the rainfall data and each switching signal, and the RAM provides a working area. When the CPU executes the flooding prediction process or the control program, the determination unit 1608, the wiper usage information extraction unit 1610, the rainfall amount calculation unit 1612, the flooding prediction unit 1614, and the avoidance route search unit 1620 are realized.

Next, the operation of the submergence channel prediction system shown in the present embodiment will be described with reference to FIGS.
As shown in FIG. 1, when a plurality of vehicles including the host vehicle 14 and the other vehicle 16 are traveling along the travel route 12, the floodway prediction system of each vehicle including the host vehicle 14 and the other vehicle 16 operates. The mode is set. In addition, it is assumed that a plurality of vehicles including the own vehicle 14 and the other vehicle 16 are traveling on a traveling route 12 during rainfall.

First, prediction processing on the own vehicle 14 side will be described with reference to FIG.
In a state where a plurality of vehicles including the own vehicle 14 and the other vehicle 16 are traveling on the traveling route 12 during the rain, the wiper use information detecting means 1402 of the own vehicle 14 is used to change the wiper 14A of the own vehicle 14 from the medium speed to the high speed. Is determined based on the switching signal from the wiper switching means 14B (step S11).
Here, when the traveling route on which a plurality of vehicles including the host vehicle 14 and the other vehicle 16 travel is clear or the rain is so low that the submergence generation place 18 is not submerged, the wiper 14A wipes at a medium to high speed. Therefore, it is determined that the operation is not performed, and the submergence prediction process is unnecessary, and the prediction process ends. If it is determined that the wiper 14A is operating at a medium to high wiping speed, the process proceeds to step S12.

  In step S12, the wiper usage information detection unit 1402 detects the wiping speed v1 when the wiper 14A is operating at a high speed from a medium speed by searching the data table using the switching signal from the wiper switching unit 14B as a pointer. The wiping speed v1 is sent to the transceiver 1406. Further, in step S13, the operation time t1 from the time when the wiper 14A starts to operate at a medium to high wiping speed is counted by the timer 1422, and the operation time t1 is sent to the transceiver 1406. In the transceiver 1406, the product of the wiping speed v1 detected by the wiper usage information detection unit 1402 of the host vehicle 14 and the operation time t1 is used as the wiper usage information for rainfall prediction. The current position data of the host vehicle 14 detected by the device 1404 is added and transmitted to a vehicle other than the host vehicle 14 (step S14).

On the other hand, the transmitter / receiver 1406 of the own vehicle 14 receives the wiper usage information with the current position data transmitted from a plurality of other vehicles traveling ahead of or following the own vehicle 14 on the same traveling route 12 in a rainy state. Receive (step S15).
In the next step S16, the determination unit 1408 travels on the same travel route 12 ahead of the host vehicle 14 from the current position data of the wiper usage information with current position data received from the plurality of vehicles received by the transceiver 1406. Whether the wiper usage information is from another vehicle is repeatedly determined each time the transceiver 1406 receives the wiper usage information with the current position data.

In the next step S17, every time the wiper usage information extraction unit 1410 determines that the determination unit 1408 is traveling ahead of the same travel route 12, the wiper usage information from the wiper usage information with the current position data of the other vehicle 16 is used. Extract information.
Here, by extracting the wiper use information of a plurality of other vehicles 16 traveling ahead of the same travel route 12, it is possible to improve the prediction accuracy of the rainfall amount on the travel route 12 on which the host vehicle 14 travels. Become.

  In the next step S18, the rainfall amount calculating means 1412 operates at a plurality of wiper use information extracted by the wiper use information extracting means 1410, that is, a wiper wiping speed driven from medium speed to high speed, and this wiping speed. The predicted rainfall amount in the travel route 12 and its surrounding area is calculated based on the operating time of the wiper being operated and the correction coefficient corresponding to the rain data of the travel route 12 received by the receiver 1404A of the navigation device 1404.

In the next step S19, the submergence prediction unit 1414 predicts whether or not the predicted rainfall calculated by the rainfall calculation unit 1412 will submerge the flooding location 18 existing on the travel route 12.
Here, when it is predicted that the predicted rainfall calculated by the rainfall calculation means 1412 does not flood the flooding location 18, the process proceeds to step S15, and the processes after step S15 are executed. If the predicted rainfall calculated by the rainfall calculation means 1412 is predicted to flood the flooded place 18, the process proceeds to step S <b> 20, and the notifying means 1416 indicates that the flooded place 18 is flooded. The prediction result of whether or not it occurs is displayed on the display unit 1418 of the host vehicle 14.

  After displaying the prediction result on the display unit 1418 by the notification unit 1416, the process proceeds to the next step S21. In this step S21, the avoidance route search means 1420 searches for another road that can avoid the inundation occurrence place 18 that is predicted to be inundated, that is, the avoidance route, based on the map data from the navigation device 1404. The information is displayed on the map displayed on the display unit 1418 to notify the change of the route.

Next, prediction processing on the other vehicle 16 side will be described with reference to FIG.
In a state where a plurality of vehicles including the other vehicle 16 are traveling on the raining travel route 12, the wiper use information detecting means 1602 of the other vehicle 16 causes the wiper 16A of the other vehicle 16 to be wiped at a medium to high wiping speed. Whether or not it is operating is determined based on the switching signal from the wiper switching means 16B (step S31).
Here, when the travel route on which a plurality of vehicles including the other vehicle 16 travel is clear, or when it is raining to such an extent that no flooding occurs at the flooded place 18, the wiper 16A is operating at a medium to high wiping speed. It is determined that there is no submergence prediction process, and the prediction process ends. When it is determined that the wiper 16A is operating at a medium to high wiping speed, the process proceeds to step S32.

  In step S32, the wiper usage information detection unit 1602 detects the wiping speed v2 when the wiper 16A is operating at a high speed from a medium speed by searching the data table using the switching signal from the wiper switching unit 16B as a pointer. The wiping speed v2 is sent to the transceiver 1606. Further, in step S33, the operation time t2 from the time when the wiper 16A starts to operate at a medium to high wiping speed is counted by the timer 1622, and the operation time t2 is sent to the transceiver 1606. In the transceiver 1606, the product of the wiping speed v2 detected by the wiper usage information detection means 1602 of the own vehicle 16 and the operation time t2 is used as the wiper usage information for rainfall prediction, and the wiper usage information is used as navigation information. The current position data of the other vehicle 16 detected by the device 1604 is added and transmitted to other vehicles than the other vehicle 16 (step S34).

On the other hand, the transmitter / receiver 1606 of the other vehicle 16 receives the wiper usage information with the current position data transmitted from a plurality of other vehicles traveling ahead and behind the other vehicle 16 on the same traveling route 12 in the rain state. Receive (step S35).
In the next step S36, the determination unit 1608 travels on the same travel route 12 ahead of the other vehicle 16 from the current position data of the wiper usage information with current position data received from the plurality of vehicles received by the transceiver 1606. Whether the wiper usage information is from another vehicle is repeatedly determined each time the transmitter / receiver 1606 receives the wiper usage information with the current position data.

In the next step S37, every time the wiper usage information extraction unit 1610 determines that the determination unit 1608 is traveling ahead of the same travel route 12, the current state of the other vehicle traveling ahead of the other vehicle 16 is determined. The wiper usage information is extracted from the wiper usage information with position data.
Here, by extracting the wiper usage information of a plurality of other vehicles traveling ahead of the same travel route 12, the prediction accuracy of the rainfall amount on the travel route 12 traveled by other vehicles preceding the other vehicle 16 Can be raised.

  In the next step S38, the rainfall calculation means 1612 operates at a plurality of wiper use information extracted by the wiper use information extraction means 1610, that is, the wiper wiping speed driven from medium speed to high speed, and this wiping speed. The predicted rainfall amount in the travel route 12 and its surrounding area is calculated based on the operating time of the wiper being operated and the correction coefficient corresponding to the rain data of the travel route 12 received by the receiver 1604A of the navigation device 1604.

In the next step S39, the submergence prediction unit 1614 predicts whether or not the predicted rainfall calculated by the rainfall calculation unit 1612 will submerge the submergence occurrence place 18 existing on the travel route 12.
Here, when it is predicted that the predicted rainfall calculated by the rainfall calculation means 1612 does not submerge the flooding location 18, the process proceeds to step S35, and the processes after step S35 are executed. If the predicted rainfall calculated by the rainfall calculation unit 1612 is predicted to flood the flooded place 18, the process proceeds to step S40, and the reporting unit 1616 reports that the flooded place 18 is flooded. The prediction result of whether or not it occurs is displayed on the display unit 1618 of the other vehicle 16.

  After displaying the prediction result on the display unit 1618 by the notification unit 1616, the process proceeds to the next step S41. In this step S41, the avoidance route search means 1620 searches for another road that can avoid the inundation place 18 predicted to be submerged, that is, the avoidance route, based on the map data from the navigation device 1604, and uses this avoidance route. The information is displayed on the map displayed on the display unit 1618 and a change of the route is notified.

  In addition, the prediction process of the flooding channel on the travel route 12 described above is not performed only in the own vehicle 14 and the other vehicle 16, but is performed in all the vehicles traveling on the same travel route 12. is there.

Such a submerged channel prediction system according to the present embodiment travels when a plurality of vehicles including the host vehicle and a plurality of other vehicles preceding the host vehicle are traveling in the same direction on the same travel route 12. In the system for predicting flooding of the road surface, the wiper use information detecting means 1402 detects the wiper wiping speed and operation time of the vehicle during rain as wiper use information, and the current position data of the own vehicle is detected in the detected wiper use information. In addition, the data is transmitted by the transceiver 1406, and the wiper usage information with current position data from the other vehicle is received. Then, determination means 1408 determines whether or not the other vehicle preceding the own vehicle is traveling on the same travel route from the current position data of the wiper usage information with current position data received by the transceiver. Further, the wiper usage information is extracted from the wiper usage information with current position data of the other vehicle determined by the determination unit 1408 by the wiper usage information extraction unit 1410. Based on the extracted wiper usage information, the driving route and the surrounding area are extracted. The predicted rainfall is calculated by the rainfall calculation means 1412. Further, the submergence prediction means 1414 predicts whether or not submergence occurs at the place where the submergence occurs on the travel route based on the calculated predicted rainfall, and notifies the vehicle behind the other vehicle of the submergence prediction result. It was configured to be.
Therefore, according to the present embodiment, a conventional submersion sensor is unnecessary, and it is possible to predict the occurrence of submersion on the travel route on which the vehicle travels without using the submersion sensor, which is advantageous in terms of cost. It becomes.

Further, according to the present embodiment, the wiper uses the wiping speed when the wiper is set from the medium speed to the high speed wiping speed as the parameter for the predicted rainfall amount. This is advantageous in terms of cost.
In addition, according to the present embodiment, it is possible to improve the prediction accuracy of the rainfall because it predicts the rainfall in the travel route and the surrounding area based on a plurality of wiper usage information received from a plurality of other preceding vehicles. .

Further, according to the present embodiment, the predicted rainfall amount in the travel route and the surrounding area is calculated and measured based on the wiper usage information received from the other vehicle and the rain data of the weather information on the travel route. Therefore, the accuracy of the predicted rainfall can be improved.
Furthermore, according to the present embodiment, when it is predicted that submergence will occur at the flooding place of the travel route, the avoidance route is searched based on the map data, the avoidance route is displayed on the display unit, and the avoidance is performed. Since the change of the route can be notified, the vehicle can be prevented from inadvertently entering the flooded road, and the safety of the driver including the vehicle can be ensured.

  The submerged channel prediction system of the present invention is not limited to the configuration shown in the above embodiment, and can be variously modified and modified without departing from the scope of the claims.

  DESCRIPTION OF SYMBOLS 12 ... Traveling route, 14 ... Own vehicle, 14A ... Wiper, 14B ... Wiper switching means, 16 ... Other vehicle, 16A ... Wiper, 16B ... Wiper switching means, 1402 ... Wiper use information detection means, 1404 ... Navigation device, 1404A ... Receiver, 1406 ... Transmitter / receiver, 1408 ... Judgment means, 1410 ... Wiper usage information extraction means, 1412 ... Rainfall amount calculation means, 1414 ... Flooding prediction means, 1416 ... Notification means, 1418 ... Display section, 1420 ... Avoidance route search means , 1602 ... wiper usage information detection means, 1604 ... navigation device, 1604A ... receiver, 1606 ... transceiver, 1608 ... determination means, 1610 ... wiper usage information extraction means, 1612 ... rainfall amount calculation means, 1614 ... flooding prediction means, 1616 ... Notification means, 1618 ... Display section, 162 ... avoid route search means.

Claims (5)

A submergence channel prediction system that predicts submergence on a traveling road surface when a plurality of vehicles including the host vehicle and a plurality of other vehicles preceding the host vehicle are traveling in the same direction on the same traveling route including a flooded place. Because
Wiper use information detecting means provided for each of the vehicles, for detecting wiper wiping speed and operating time of the vehicle during rain as wiper use information;
A navigation device that is provided for each vehicle and detects at least a current position on a travel route of the vehicle as current position data of the own vehicle;
Provided for each vehicle, and transmits the wiper usage information detected by the wiper usage information detecting means of the own vehicle with the current position data detected by the navigation device of the own vehicle and transmitted from another vehicle A transmitter / receiver for receiving wiper usage information with current position data,
Whether another vehicle preceding the own vehicle is traveling on the same travel route from the current position data of wiper usage information with current position data of the other vehicle provided for each vehicle and received by the transceiver Determination means for determining whether or not
A wiper usage information extraction unit that is provided for each vehicle and extracts wiper usage information from wiper usage information with current position data of other vehicles determined to be traveling on the same travel route by the determination unit;
A rainfall amount calculating means that is provided for each vehicle and calculates a predicted rainfall amount in the travel route and the surrounding area based on the wiper usage information extracted by the wiper usage information extracting means;
A submergence prediction unit that is provided for each vehicle and predicts whether or not submergence occurs at a submergence occurrence location on the travel route based on the predicted rainfall calculated by the rainfall calculation unit;
Informing means provided for each of the vehicles, and informing the vehicle behind the other vehicle of the prediction result of the flooding predicting means;
A submerged channel prediction system characterized by comprising:   The wiper wiping speed of the wiper usage information detected by the wiper usage information detecting means is a speed when the wiper is operated from a medium speed to a high speed. Submerged channel prediction system.   3. The floodway according to claim 1, wherein the rainfall amount calculation means predicts the rainfall amount in the travel route and the surrounding area based on a plurality of wiper usage information received from the plurality of other vehicles. Prediction system.   The navigation device has a receiver that receives the weather information of the travel route, and the rainfall amount calculation means is based on the rain data of the weather information received by the receiver and the wiper usage information from the other vehicle. The flood forecast system according to any one of claims 1 to 3, wherein the amount of rainfall in the travel route and the surrounding area is predicted.   A display unit that displays the travel route based on map data from the navigation device, and an avoidance route based on map data from the navigation device when the submergence prediction means predicts that submergence will occur at the submergence occurrence location. And the display unit and the avoidance route search means are provided for each vehicle, and the avoidance route searched by the avoidance route search means is displayed on the display unit, and 5. The flood channel prediction system according to claim 1, wherein the change of the avoidance route is notified by the notification unit.

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