JP2004341795A - Road traffic information system, submersion detector, navigation system and vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the occurrence of vehicle breakdown and to preliminarily prevent the occurrence of traffic congestion by bypassing a submersion place where some vehicles are not able to pass among submersion. <P>SOLUTION: Each vehicle 2 is provided with a submersion sensor for detecting the existence of water and a navigation system for communicating with a center server 1. When the submersion is detected by the submersion sensor of the vehicle 2, location information detected by the navigation system, the submersion information detected by the submersion sensor and vehicle height information showing the set height of the submersion sensor are transmitted from the plurality of vehicles 2 to the center server 1. The center server 1 estimates the submersion place and calculates the submersion depth based on the received location information, submersion information and vehicle height information, and transmits it to each vehicle 2. The navigation system of the vehicle 2 received the information sets a route bypassing the submersion where the vehicle is not able to pass, and guides a bypass route. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a road traffic information system, a flood detector and a navigation system, and a vehicle, and is particularly suitable to be applied to an intelligent transport system (ITS) technology.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been proposed a traffic information system in which an in-vehicle device is mounted on a vehicle and traffic information such as traffic congestion information, accident information, and weather information is collected (for example, see Patent Document 1).
[0003]
In the traffic information system described in Patent Literature 1, a car navigation system is mounted on an in-vehicle device mounted on a vehicle, and position information is detected, and information on traffic congestion, accidents, and weather is manually input. It is automatically detected. Further, the on-board unit is further equipped with a laser radar, and the number of vehicles, the vehicle speed, and the shape of the vehicle are detected, and traffic jam and accident information are created based on these. The information collected in the vehicle is transmitted to the center via the repeater, and the information processed in the center is transmitted to the vehicle again.
[0004]
[Patent Document 1]
JP-A-8-263793
[0005]
[Problems to be solved by the invention]
However, there are cases where floods, puddles, and the like (hereinafter, collectively referred to as floods) occur on roads that need to be entered during vehicle traffic, such as during rainfall. The flooding often appears suddenly on the road for the driver of the vehicle, and may be forced to enter the flooding.
[0006]
When the depth from the upper surface to the road surface is shallow, most vehicles can pass.However, when the flooding becomes deep, such as when the amount of rainfall is large, the flooding causes In some cases, the vehicle may be stuck (can not move).
[0007]
In addition, the depth at which the vehicle is stuck in the flood is lower as the vehicle height is lower, and becomes deeper as the vehicle height is higher. In other words, even in a place where a flood occurs, a situation may occur in which a vehicle with a low height cannot pass even if a vehicle with a high height can pass.
[0008]
In this case, since a vehicle with a high vehicle height was able to pass, when a vehicle with a low vehicle height tried to pass, the vehicle with a low vehicle height was stuck, and in some cases, for example, flooded in an electric system or the like. Not only does a vehicle need to be repaired due to a vehicle failure, but also various problems occur, such as the possibility of congestion starting from the location where the flood occurs on the road. .
[0009]
Therefore, it has been desired to develop a technology capable of avoiding such flooding that becomes impassable due to the height of the vehicle, thereby suppressing vehicle failure and occurrence of traffic congestion.
[0010]
Therefore, an object of the present invention is to avoid a place that cannot be passed depending on the vehicle, such as a flood or a puddle generated on a road at the time of rainfall, thereby suppressing occurrence of a vehicle failure. Another object of the present invention is to provide a road traffic information system capable of preventing traffic jams from occurring.
[0011]
Another object of the present invention is to provide a submergence detector capable of detecting a puddle that cannot be passed depending on a vehicle among puddles generated on a road at the time of rainfall or the like.
[0012]
Further, a further object of the present invention is to notify, to a driver of a vehicle, the presence of a puddle that is impassable on a vehicle-by-vehicle basis, among puddles that occur on a road during rainfall or the like. It is an object of the present invention to provide a navigation system capable of suppressing the occurrence of a vehicle failure and preventing the occurrence of traffic congestion.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, a first invention of the present invention provides:
Server and
A plurality of submergence detection means installed in each of a plurality of vehicles and configured to be able to detect the presence of a liquid tangible object,
Each is installed in a plurality of vehicles, and is configured to be able to communicate with the server, and has a plurality of position detection means configured to be able to detect the position information of each of the plurality of vehicles in the vehicle,
At the stage when the flooding is detected by the plurality of flooding detecting means, the position information detected by the position detecting means, the flooding information detected by the flooding detecting means, and the vehicle height information which is the installation height of the flooding detecting means are included. Sent to the server,
The server is configured to estimate a flooded location based on the received position information and the flooded information, and to calculate a flooded depth based on the vehicle height information.
A road traffic information system characterized in that:
[0014]
In the first invention, typically, the server is configured to transmit the flood location information and the flood depth information to a terminal that can receive the flood location information and the flood depth information.
[0015]
According to a second aspect of the present invention,
A detection sensor configured to detect the presence of a liquid tangible object,
A housing for covering the detection sensor;
And at least one blocking member provided inside the housing,
At least one first opening through which a liquid tangible substance can enter is provided in a portion of the housing, and a second opening configured to be able to discharge air is provided,
The blocking member is provided between the detection sensor and the first opening in a range that blocks a range facing the first opening from the detection sensor.
It is a submergence detector characterized by the above-mentioned.
[0016]
According to a third aspect of the present invention,
Position detection means configured to be able to measure the position of the vehicle,
Notifying means configured to output at least the map information and the position of the vehicle,
Communication means configured to be able to communicate with a server that transmits and receives traffic information;
Information processing means configured to control the position detection means, the notification means and the communication means,
At the stage of receiving the flood information including the flood location information and the flood depth information transmitted from the server,
It is configured so that the inundation location can be notified by the notification means,
Comparing the inundation depth at the inundation location with the inundation depth at which the vehicle can pass, and when the inundation depth in the inundation information is greater than the inundation depth at which the vehicle can pass, setting a detour route to bypass the inundation location; It is configured to be able to notify the detour route by
A navigation system characterized in that:
[0017]
According to a fourth aspect of the present invention,
A detection sensor configured to be able to detect the presence of a liquid tangible object, a housing that covers the detection sensor, and at least one blocking member provided inside the housing, and configured to have a portion of the housing, At least one first opening through which a liquid material can enter is provided, and a second opening configured to discharge air is provided, and a blocking member is provided between the detection sensor and the first opening. However, a submergence detector provided in a range that blocks a range facing the first opening from the detection sensor is installed.
A vehicle characterized in that:
[0018]
According to a fifth aspect of the present invention,
Position detecting means configured to be able to measure the position of the vehicle, notifying means configured to be able to output at least map information and the position of the vehicle, and communication means configured to be able to communicate with a server that transmits and receives traffic information, A position detecting unit, a notifying unit, and an information processing unit configured to be able to control the communication unit, and a notification unit at a stage where the flooding information including the flooding location information and the flooding depth information transmitted from the server is received. By being configured to be able to notify the flooded place by, and comparing the flooded depth at the flooded place and the floodable depth of the vehicle, if the flooded depth in the flooded information is greater than the floodable depth of the vehicle, It has a navigation system configured to set a detour route to bypass the flooded place and to be able to notify the detour route by the notification means.
A vehicle characterized in that:
[0019]
In the second invention and the fourth invention, typically, a blocking member is further provided in a range facing the second opening from the detection sensor.
[0020]
According to the road traffic information system according to the present invention configured as described above, after rainfall or the like, it is possible to detect the location and depth of a flood or a puddle existing on the road and notify the vehicle. In addition to being able to do so, it is possible to notify the driver in advance of the presence of the flood and the possibility of traffic.
[0021]
According to the navigation system and the vehicle equipped with the navigation system according to the present invention configured as described above, it is possible to detect floods and the like generated on the road after rainfall, and to use the floods and the like for driving by the driver. The driver himself / herself can recognize in advance whether or not the passing vehicle can pass, and it is possible to prevent the vehicle from encountering a flood that cannot pass.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In all the drawings of the following embodiments, the same or corresponding parts are denoted by the same reference numerals. FIG. 1 shows a road traffic information system according to this embodiment.
[0023]
That is, as shown in FIG. 1, in the road traffic information system according to this embodiment, a center server 1 and a vehicle 2 (vehicles 2a, 2b, 2c,...) As terminals are connected to a wide area network (WAN) 3. , So that communication is possible.
[0024]
The wide area network 3 is set so as to be able to communicate with the center server 1 through a relay 4 (relays 4a, 4b, 4c,...) Provided at an appropriate position near the road as an interface.
[0025]
These repeaters 4 are mounted on a support tower for the repeater, and are used for facilities such as so-called road-related structures, structures, facilities, such as traffic lights, lampposts, pedestrian bridges, and overpasses. Some are installed. If necessary, the road traffic information system may include a display panel (not shown) such as an electric bulletin board, for example, and is installed in the same manner as the repeater 4 and the like.
[0026]
The road traffic information system according to the embodiment is installed over an area of an appropriate size. This area may be the whole of Japan, the area of each island, or a unit such as the Kanto region, the Kansai region, and the Chubu region. Further, the region may be an administrative division such as a prefecture or a municipal or a region where a plurality of these administrative divisions are provided. The area where the road traffic information system is provided is divided into a plurality of areas. In these areas, a size and area suitable for collecting traffic information, an area suitable for traffic flow control, and the like are defined as one unit, and at least one repeater 4 is provided in one area. Note that the range that can be covered by one repeater 4 can be set as the unit of the area.
[0027]
Next, a vehicle 2 equipped with an on-vehicle device such as a navigation system that operates as a position sensor that can use the road traffic information system according to the embodiment will be described. FIG. 2 shows a configuration of a navigation system as a position sensor mounted on a vehicle according to the embodiment.
[0028]
As shown in FIG. 2, the in-vehicle device according to the embodiment mainly includes various sensors, a communication device, and an information processing device. As sensors according to this embodiment, a vehicle speed sensor 13, a flood sensor 14 and a position sensor are provided. The vehicle speed sensor 13 among these sensors can be realized by a speedometer provided in a normal vehicle. The details of the flood sensor 14 will be described later.
[0029]
In this embodiment, a car navigation system 20 is used as a position sensor. This position sensor is configured to be able to output data (latitude, longitude and, if necessary, altitude) representing the position of the vehicle. It is also possible to install only the position sensor alone without using the car navigation system 20.
[0030]
The communication device includes a receiver 11 and a transmitter 12. The receiver 11 and the transmitter 12 exchange data with the center server 1 mainly by communicating with the relay device 4. In this embodiment, the data communicated between the center server 1 and the car navigation system mounted on the vehicle include at least the traveling position of the vehicle 2, the flood sensor information by the flood sensor 14, and the vehicle 2 Includes vehicle height information as a height when the submergence sensor 14 is attached.
[0031]
In addition, the information processing apparatus 10 includes a small computer or a microprocessor, a memory (ROM, RAM), an auxiliary storage device such as a hard disk, an interface circuit, and the like.
[0032]
The information processing device 10 includes information data obtained from a vehicle speed sensor 13, a flood sensor 14 and a car navigation system 20, specifically, for example, a traveling position of a vehicle, information detected by the flood sensor 14, and a vehicle height of each vehicle. Information (vehicle height information) can be transmitted to the center server 1 via the transmitter 4 via the transmitter 12.
[0033]
Further, the information processing device 10 transmits traffic information, weather information, and the like transmitted from the center server 1 via the relay device 4 and received by the receiver 11 to the display unit 25 of the car navigation system 20, a buzzer, a speaker, and the like. To an audio output device (not shown). Note that a dedicated display device for traffic information and weather information can be provided without using the display unit 25 of the car navigation system 20.
[0034]
In addition, the car navigation system displays a map, as is well known in the art, and displays the current position, the destination position, and the optimal route (driving route) on the displayed map in various methods (for example, a planar map). Or a bird's-eye view) and notify the driver by voice or display.
[0035]
Specifically, in the car navigation system 20 according to the embodiment, a central processing unit (CPU) 21, a GPS receiver 22 for position measurement, a map database 23, various sensors 24, and a display as a man-machine interface. It has a unit 25 and an input unit 26.
[0036]
The map database 23 is generally stored in a recording medium such as a hard disk (HD) or a DVD (Digital Versatile Disc), and stores data representing maps of several scales.
[0037]
In addition, various methods can be adopted for the method of measuring the position of the vehicle, and an accurate position is generally obtained by using a plurality of methods in combination. In the GPS (Global Positioning System) system among these various systems, a radio wave emitted from a plurality of artificial satellites is received by a GPS receiver 22, the arrival time is measured, and the distance from the satellite is calculated. Thus, the system measures the current position of the vehicle. There is also a method of measuring a position by receiving a radio wave from a radio wave transmission facility (beacon) provided on a roadside. In this case, the above-described repeater 4 also serves as a beacon. The signal for position measurement at this time is received by the receiver 11 and supplied to the CPU 21.
[0038]
In addition, the sensor 24 includes a gyro, a wheel speed difference sensor, and the like. Then, the CPU 21 corrects the traveling position (map matching) using the road map represented by the map database as necessary based on the received radio wave and the signal from the sensor, and displays the accurate traveling position. Generate possible data.
[0039]
As described above, the car navigation system according to the embodiment is configured. Next, the flood sensor 14 provided in the vehicle in the car navigation system will be described. FIG. 3 shows an example of the structure of the submergence sensor 14 according to this embodiment, and FIG. 4 shows an example of the mounting state of the submergence sensor 14.
[0040]
In the flood sensor 14 according to this embodiment, since it is necessary to accurately detect a liquid tangible substance such as water on the road, the state of the flood on the road is accurately reflected near the sensor for detecting the liquid tangible substance. I have to do it.
[0041]
For this purpose, it is necessary to prevent splashes of liquid tangible objects such as water on the road from coming into contact with the detection sensor or leaving liquid tangible objects such as water near the detection sensor after passing through the flood on the road. There is.
[0042]
Therefore, the flood sensor 14 according to this embodiment is configured to prevent the splash (for example, water splash) of the liquid tangible object on the road from coming into direct contact with the detection sensor, and to prevent the vehicle from passing through the flood after the vehicle has passed through the flood. The vehicle 2 is configured such that no liquid tangible material remains therein, and is installed at a position where the vehicle 2 can detect a flood.
[0043]
More specifically, as shown in FIGS. 3A and 3B, the flood sensor 14 includes a detection sensor 140 that can detect a liquid tangible object such as water, a housing 141 that covers the detection sensor 140, and a housing 141 that covers the detection sensor 140. It has a buffer plate 142 as a blocking member provided in a partition plate shape inside the body 141. In addition, liquid inlet / outlets 143 and 144 are formed at the lower part of the housing 141, and an air hole 145 is formed at the upper part of the housing 141.
[0044]
The buffer plate 142 is for preventing the bouncing of the liquid material from the road from coming into direct contact with the detection sensor 140. The buffer plate 142 is provided between the detection sensor 140 and the liquid inlet / outlet 143, 144. They are provided so as to block the ranges facing the respective liquid inlets / outlets 143 and 144. Similarly, a buffer plate 142 is provided for the air hole 145 so as to block a range where the detection sensor 140 faces the air hole 145.
[0045]
In addition, the liquid inlet / outlet 144 is an opening through which a liquid material such as water enters the inside of the housing 141 or discharges the liquid material. The air hole 145 is an opening through which air can enter and exit to facilitate entry and discharge of the liquid material from the liquid inlets and outlets 143 and 144.
[0046]
The mounting position of the flood sensor 14 on the vehicle 2 may be, for example, a bottom surface of an under cover (not shown) of the vehicle 2 as shown in FIG. Then, at the time when moisture is detected by the above-described detection sensor 140, the submersion of a depth equal to or more than the distance from the road surface to the detection sensor 140 in the submergence sensor 14 on the bottom surface of the undercover, that is, the depth above the ground height h of the vehicle 2 is performed. It is configured to be able to detect the presence.
[0047]
That is, when the vehicle 2 passes through a puddle or submergence above the vehicle height h by the submersion sensor 14 attached at the position shown in FIG. 4, air is discharged from the air holes 145 and water is discharged from the liquid inlets 143 and 144. Liquid tangible material quickly penetrates. Then, when the intrusion of the liquid substance reaches the detection sensor 140, the detection sensor 140 is configured to detect a submergence state and supply a submergence detection signal (submergence sensor information) to the information processing apparatus 10.
[0048]
When the flood sensor 14 is installed on the bottom surface of the undercover of the vehicle, the ground height h of the vehicle 2, that is, the height h at which the flood sensor 14 detects the flood is different depending on the type and type of the vehicle. . Therefore, when the flood sensor 14 is attached to the bottom of the undercover in various vehicles 2, even if the flood is the same, the vehicle 2 may or may not detect the flood by the flood sensor 14. That is, the vehicle 2 having a high ground height h is difficult to detect the flooding, and the vehicle 2 having a low ground height h is easy to detect the flooding.
[0049]
Next, a method of processing flood information by the road traffic information system using the flood sensor 14 and the navigation system according to the embodiment configured as described above will be described. FIG. 5 shows a flowchart of flood information processing by the center server 1 according to the embodiment.
[0050]
That is, each vehicle 2 (vehicles 2a, 2b, 2c,...) Shown in FIG. 1 is provided with the flood sensor 14 configured as described above. In these vehicles 2, when the flood sensor 14 detects the flood, the flood sensor 14 supplies the flood sensor information to the information processing device 10.
[0051]
The information processing apparatus 10 to which the flood sensor information is supplied receives data of the current travel position from the car navigation system as a position sensor, and the travel position data and the height h (ground height) at which the flood sensor 14 is installed. h) data (vehicle height information) is transmitted to the center server 1 via the wide area network 3.
[0052]
Then, as shown in FIG. 5, the center server 1 determines whether or not the flood sensor information has been received (step ST1). If the flood sensor information is received, the process proceeds to step ST2.
[0053]
In step ST2, the center server 1 stores the traveling position data and the vehicle height information transmitted from each vehicle 2 in the storage unit of the center server 1 in association with each other. Thereafter, the process proceeds to step ST3.
[0054]
In step ST3, it is determined whether or not the received submergence sensor information has been accumulated for a predetermined number or more. At this time, if the flood sensor information is less than the predetermined number, the process shifts to step ST1 to continue waiting for receiving the flood sensor information. Here, as the predetermined number, for example, a variation (for example, variance) of the received vehicle height information can be a numerical value that can statistically identify the location of the flood, but is not necessarily limited to this. However, it is also possible to set a predetermined value such as 300, for example.
[0055]
Thereafter, when a predetermined number or more of the flood sensor information is accumulated, the process proceeds to step ST4. In step ST4, the center server 1 that has received the flood sensor information, the traveling position data, and the vehicle height information from a predetermined number or more of the vehicles 2 performs a statistical analysis process of the vehicle height information supplied from each vehicle 2. At this time, in the center server 1, it is preferable to classify the travel position data, and to perform statistical analysis processing on the vehicle height information in the extremely close travel position data among the travel position data. Statistical analysis processing may be performed in parallel with the vehicle height information.
[0056]
Then, the process proceeds to step ST5, where the center server 1 presumably specifies the location of the flooding based on the classification based on the traveling position data, and based on the result of the statistical analysis processing on the vehicle height information, the depth of the flooding. Is statistically calculated.
[0057]
Thereafter, the process proceeds to step ST6, where the center server 1 via the wide area network 3 and the repeater 4 executes the flooding position data (flooding position data) and the flooding depth data (flooding depth data) specified as described above. Is transmitted to all receivable vehicles 2, and the flood information processing in the center server 1 ends.
[0058]
In the vehicle 2 that has received the flood position data and the flood depth data transmitted from the center server 1 by the receiver 11, the flood position data and the flood depth data are supplied to the CPU 21 through the information processing device 10, and the car navigation is performed. A predetermined process is executed in the system.
[0059]
That is, in the vehicle 2, the flooded position data is superimposed on the map data based on the map database 23 and displayed on the display unit 25. On the other hand, the flood depth data is compared by the CPU 21 with the height h (vehicle height information) of the flood sensor 14 attached to the vehicle 2. Then, when the value of the flood depth in the flood depth data is larger than the vehicle height information of the vehicle 2, the traveling route set by the car navigation system is changed to a detour route that avoids the location of the flood.
[0060]
As described above, flood information is collected from each vehicle 2, and based on the collected flood information, information on a flood location and a flood depth on a road is provided to all vehicles 2.
[0061]
As described above, according to this embodiment, not only can the flood location of the road be statistically specified, but also the driver of the vehicle 2 recognizes the flood depth using these data. Therefore, when the depth of the flood is impossible for the vehicle 2 to pass, the detour route of the vehicle 2 can be selected, and the vehicle 2 is stuck in the flood, causing a vehicle failure or congestion. Can be prevented in advance.
[0062]
As described above, one embodiment of the present invention has been specifically described. However, the present invention is not limited to the above-described embodiment, and various modifications based on the technical idea of the present invention are possible.
[0063]
For example, the numerical values, the configuration of the car navigation system, and the configuration of the flood sensor described in the above-described embodiment are merely examples, and different values may be used as needed, and the configuration of the car navigation system and the configuration of the flood sensor may be changed. It is also possible to adopt.
[0064]
【The invention's effect】
As described above, according to the road traffic information system according to the present invention, the position information detected by the position detection means at the stage when the flood detection is detected by the plurality of flood detection means installed in the plurality of vehicles, Flooding information detected by the detecting means, vehicle height information which is the installation height of the flood detecting means is transmitted to the server, and the server estimates the flood location based on the received position information and the flood information. By being configured to calculate the flood depth, it is possible to avoid flooding that cannot be passed depending on the vehicle from among the floods that occur on the road during rainfall, etc. Can be suppressed or traffic jams can be prevented.
[0065]
Further, according to the flood detector and the vehicle provided with the same according to the present invention, among the floods generated on the road at the time of rainfall, etc., erroneous detection due to bouncing of a liquid material such as water is prevented, and the liquid material is detected. The intrusion state can be accurately detected.
[0066]
Further, according to the navigation system and the vehicle provided with the same according to the present invention, among the floods that occur on the road during rainfall or the like, the presence of a flood that cannot be passed by each vehicle is notified to the driver of the vehicle. Notification can be made, whereby the occurrence of vehicle failure can be suppressed, and the occurrence of traffic congestion can be prevented.
[Brief description of the drawings]
FIG. 1 is a configuration diagram schematically showing a road traffic information system according to an embodiment of the present invention.
FIG. 2 is a block diagram showing an in-vehicle device including a car navigation system according to one embodiment of the present invention.
FIG. 3 is a schematic diagram illustrating a structure of a flood sensor according to an embodiment of the present invention.
FIG. 4 is a schematic diagram showing a mounting state of a flood sensor according to a maintenance embodiment of the present invention;
FIG. 5 is a flowchart showing processing by a center server according to an embodiment of the present invention.
[Explanation of symbols]
1 center server
2,2a, 2b, 2c vehicle
3 wide area network
4,4a, 4b, 4c repeater
10 Information processing device
11 Receiver
12 transmitter
13 Vehicle speed sensor
14 Submersion sensor
20 Car navigation system
21 CPU
22 GPS receiver
23 Map Database
24 sensors
25 Display
26 Input section
140 detection sensor
141 housing
142 buffer plate
143,144 Liquid inlet / outlet
145 air hole

Claims (7)

Server and
A plurality of submergence detection means installed in each of a plurality of vehicles and configured to be able to detect the presence of a liquid tangible object,
Each of the plurality of vehicles is installed and configured to be communicable with the server, and includes a plurality of position detection units configured to detect position information of each of the plurality of vehicles in each vehicle. And
At the stage when the flooding is detected by the plurality of flooding detecting means, the position information detected by the position detecting means, the flooding information detected by the flooding detecting means, and the vehicle being the installation height of the flooding detecting means. High information is sent to the server,
The server is configured to estimate a flood location based on the received position information and the flood information and to calculate a flood depth based on the vehicle height information. Road traffic information system. The road traffic information system according to claim 1, wherein the server is configured to transmit the flood information to a terminal capable of receiving the flood information. A detection sensor configured to detect the presence of a liquid tangible object,
A housing that covers the detection sensor;
And at least one blocking member provided inside the housing,
In the portion of the housing, at least one first opening through which the liquid tangible object can enter is provided, and a second opening configured to discharge air is provided,
The submergence detector, wherein the blocking member is provided between the detection sensor and the first opening in a range that blocks a range facing the first opening from the detection sensor. 4. The flood detector according to claim 3, further comprising a blocking member provided in a range facing the second opening from the detection sensor. Position detection means configured to be able to measure the position of the vehicle,
Notifying means configured to output at least map information and the position of the vehicle,
Communication means configured to be able to communicate with a server that transmits and receives traffic information;
An information processing unit configured to control the position detection unit, the notification unit, and the communication unit,
At the stage of receiving the flood information including the flood location information and the flood depth information transmitted from the server,
Along with being configured to be able to notify the inundation location by the notification means,
Comparing the flood depth at the flood location and the flood depth at which the vehicle can pass, and when the flood depth in the flood information is greater than the flood depth at which the vehicle can pass, a detour route that bypasses the flood location. The navigation system is configured so that the detour route can be reported by the reporting means. A detection sensor configured to be capable of detecting the presence of a liquid tangible object, a housing that covers the detection sensor, and at least one blocking member provided inside the housing; The portion is provided with at least one first opening through which the liquid tangible material can enter, and a second opening configured to allow air to be exhausted, and the detection sensor and the first opening A flooding detector provided in a range in which the blocking member blocks a range facing the first opening from the detection sensor. Position detecting means configured to measure the position of the vehicle, notifying means configured to output at least the map information and the position of the vehicle, and communication means configured to be able to communicate with a server that transmits and receives traffic information; Having the information processing means configured to control the position detection means, the notification means and the communication means, and received the flood information including the flood location information and the flood depth information transmitted from the server. In the step, the notification unit is configured to be able to notify the flooded place, and the flooded depth at the flooded place is compared with the floodable depth at which the vehicle can pass, and the flooded depth in the flooded information is If the depth is greater than the depth of flooding that the vehicle can pass, a detour route that bypasses the flooded area is set, and the detour route can be notified by the notification means. Vehicle, characterized in that it comprises a navigation system.

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