WO2016129250A1

WO2016129250A1 - Communication system, vehicle-mounted device, and information center

Info

Publication number: WO2016129250A1
Application number: PCT/JP2016/000548
Authority: WO
Inventors: 公治清水
Original assignee: 株式会社デンソー
Priority date: 2015-02-12
Filing date: 2016-02-03
Publication date: 2016-08-18
Also published as: JP2016149015A

Abstract

Provided is a vehicle-mounted device. The vehicle-mounted device is provided with: an image taking unit (S225) for taking an image of a submergence point by a camera mounted on an own vehicle, when the own vehicle runs the submergence point or in the vicinity thereof; an estimation unit (S230) for estimating a submergence degree at the submergence point on the basis of a submergence image, which is the taken image of the submergence point by the image taking unit; and a submergence information transmission unit (S230) for transmitting the estimated submergence degree and the submergence point relating to the submergence degree to an information center by wireless communication.

Description

Communication system, in-vehicle device, and information center

Cross-reference of related applications

This application is based on Japanese Patent Application No. 2015-25682 filed on February 12, 2015, the disclosure of which is incorporated herein by reference.

The present disclosure relates to a communication system, an in-vehicle device, and an information center.

When a submersion sensor detects flooding in each vehicle, a system is known that transmits the position information of the submergence point (flooding point) to the server and transmits the submergence point position information from the server to each vehicle. (For example, Patent Document 1). According to such a system, the presence or absence of flooding can be ascertained without providing monitoring equipment at a point where there is a risk of flooding, and costs can be reduced.

JP2004-341795A

However, in the above system, each vehicle is configured to detect submersion when a liquid object touches the submersion sensor. For this reason, if the water surface does not reach the height of the submersion sensor attached to the vehicle, the submersion cannot be detected, and the submergence detection accuracy is low. In addition, it was not possible to grasp how deep the submergence point was.

One of the objectives of the present disclosure is to provide a technology that enables low-cost and more detailed understanding of the flooding situation.

The communication system according to the first aspect of the present disclosure includes an in-vehicle device and an information center that performs wireless communication with the in-vehicle device. The in-vehicle device includes a specific unit that identifies a submergence point where flooding occurs or has a high risk of submergence, and a camera mounted on the host vehicle when the host vehicle travels at or near the submergence point. An imaging unit for imaging the submergence point, an estimation unit for estimating the submergence level at the submergence point based on a submergence image that is a captured image of the submergence point by the imaging unit, the estimated submergence degree, and the submergence degree A submergence information transmission unit that transmits the submergence point to the information center.

Also, the information center includes a receiving unit that receives the submergence degree and the submergence point from the in-vehicle device, and a submergence information storage unit that stores the submergence degree in association with the submergence point received together with the submergence degree.

According to such a configuration, the inundation point is photographed by the camera mounted on the vehicle during the rain, and the estimated value of the depth of the inundation point based on the photographed image is accumulated in the information center. For this reason, it is possible to grasp the water depth at the flooding point without providing monitoring equipment at a point where there is a risk of flooding, and it is possible to grasp the flooding situation in more detail at a low cost.

Further, the communication system according to the second aspect of the present disclosure includes an in-vehicle device and an information center that performs wireless communication with the in-vehicle device. The in-vehicle device includes a specific unit that identifies a submergence point where flooding occurs or has a high risk of submergence, and a camera mounted on the host vehicle when the host vehicle travels at or near the submergence point. And a submergence information transmitting unit for transmitting the submergence point to the information center. The submergence image is a photographed image of the submergence point by the photographing unit.

The information center includes a receiving unit that receives the submergence image and the submergence point from the in-vehicle device, and a submergence information storage unit that stores the submergence image in association with the submergence point received together with the submergence image.

According to such a configuration, the submergence point is photographed by the camera mounted on the vehicle when it rains, and the photographed image is accumulated in the information center. For this reason, it is possible to confirm the situation of the flooding point with an image without providing monitoring equipment at a point where there is a risk of flooding, and it is possible to grasp the flooding situation in more detail at a low cost.

In addition, the in-vehicle device according to the first aspect of the present disclosure includes a specific unit that identifies a submergence point where flooding occurs or the risk of submergence is high, and the host vehicle travels at or near the submergence point. In this case, an imaging unit that captures the submergence point with a camera mounted on the vehicle, an estimation unit that estimates a submergence level at the submergence point based on a submergence image that is a captured image of the submergence point by the imaging unit, and an estimation And a submergence information transmitting unit that transmits the submergence degree and the submergence point related to the submergence degree to the information center by wireless communication.

In addition, the information center according to the first aspect of the present disclosure receives a submergence point and a submergence degree at the submergence point from the in-vehicle device by wireless communication, and the submergence degree is received together with the submergence degree. A submergence information storage unit that stores the submergence points in association with each other.

By using a combination of these in-vehicle devices and the information center, a flooding point is photographed by a camera mounted on the vehicle when it rains, and an estimated value of the depth of the flooding point based on the photographed image is accumulated in the information center. For this reason, it is possible to grasp the water depth at the flooding point without providing monitoring equipment at a point where there is a risk of flooding, and it is possible to grasp the flooding situation in more detail at a low cost.

In addition, the in-vehicle device according to the second aspect of the present disclosure includes a specifying unit that specifies a submergence point where submergence occurs or the risk of submergence is high, and the host vehicle travels at or near the submergence point. In this case, a photographing unit that photographs the submergence point with a camera mounted on the own vehicle, a submergence image that is a photographed image of the submergence point by the photographing unit, and the submergence point that transmits the submergence point to the information center by wireless communication. An information transmission unit.

In addition, the information center according to the second aspect of the present disclosure is an image obtained by photographing a submergence point and a submergence point from a vehicle-mounted device with a camera mounted on the vehicle on which the vehicle-mounted device is mounted, by wireless communication. A receiving unit that receives the submergence image; and a submergence information storage unit that stores the submergence image in association with the submergence point received together with the submergence image.

By using a combination of these in-vehicle devices and the information center, the submergence point is photographed by a camera mounted on the vehicle when it rains, and the photographed image is accumulated in the information center. For this reason, it is possible to confirm the situation of the flooding point with an image without providing monitoring equipment at a point where there is a risk of flooding, and it is possible to grasp the flooding situation in more detail at a low cost.

The above and other objects, features, and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings. In the drawing
FIG. 1 is a block diagram of a communication system according to the first embodiment. FIG. 2 is a block diagram of the navigation device of the first embodiment. FIG. 3 is a block diagram of the information center according to the first embodiment. FIG. 4 is a flowchart of the road information acquisition process of the first embodiment. FIG. 5 is a flowchart of the approach determination process according to the first embodiment. FIG. 6 is an example of a submerged image. FIG. 7 is a flowchart of road information transmission processing according to the first embodiment. FIG. 8 is a flowchart of the submergence information storage process according to the first embodiment. FIG. 9 is a flowchart of the flood information providing process according to the first embodiment. FIG. 10 is a flowchart of the submergence information storage process of the second embodiment. FIG. 11 is an example of a danger point image according to the second embodiment.

<First Embodiment>
<Description of configuration>
The communication system 1 according to the first embodiment includes one or a plurality of navigation devices 10 and an information center 30 that communicates with each navigation device 10 via a wireless communication network 20 (FIG. 1).

The navigation device 10 is configured to perform route guidance, facility search, and the like, and includes a position detector 11, a map data input unit 12, a control unit 13, a camera 14, a display unit 15, a speaker 16, an operation unit 17, and external communication. It consists of a part 18 etc. (FIG. 2).

The position detector 11 is configured to detect the current location of the host vehicle, and includes a GPS receiver 11a, a gyro sensor 11b, an acceleration sensor 11c, and the like. The GPS receiver 11a receives a signal from an artificial satellite for GPS via a GPS antenna (not shown) to detect the position, direction, speed, etc. of the own vehicle, and the gyro sensor 11b is a rotational motion applied to the own vehicle. Detect the size of. The acceleration sensor 11c detects the acceleration in the front-rear direction of the host vehicle. Since these have errors of different properties, they are configured to be used while complementing each other.

The map data input unit 12 is a device for inputting various data such as map information used when performing route guidance and the like and facility search information used when searching for a predetermined facility. As a storage medium for these data, since the amount of data is enormous, a DVD-ROM, HDD, or the like is generally used.

The control unit 13 is configured around a known microcomputer including a CPU, ROM, RAM, I / O, a bus line connecting these, and the like. The control unit 13 controls each part of the navigation device 10 according to a program stored in the ROM or a program loaded in the RAM.

The camera 14 is a part that images the front of the host vehicle. The camera 14 may be used for driving support such as collision avoidance control and cruise control. It should be noted that a camera provided in another ECU for driving assistance or the like, a camera provided in a drive recorder, or the like may be used.

The display unit 15 is a part that performs various displays, and includes an LCD, an organic EL, or the like.

Speaker 16 outputs sound based on a signal from control unit 13.

The operation unit 17 is a part that receives various instructions from the user, and includes a key switch, a touch switch, a remote controller, and the like.

The external communication unit 18 is a part for accessing the wireless communication network 20 via an antenna or the like (not shown) and communicating with the information center 30.

On the other hand, the information center 30 constitutes a road traffic information system and collects and provides road information in various regions. The road information is information including a point where a traffic jam or an accident has occurred, the weather in each region, position information of a flooded point, water depth, and the like. In addition, it is good also considering both or one of the point where the flood is actually generated at the present time, and the point registered beforehand as a point with high risk of flooding at the time of rain as a flooding point. The information center 30 includes a communication unit 31, a storage unit 32, a control unit 33, a display unit 34, an operation unit 35, and the like (FIG. 3). The information center 30 has a function as a database (flood information DB) for storing flood information described later.

The communication unit 31 is a part that accesses the Internet or the wireless communication network 20 and communicates with the navigation device 10 via the wireless communication network 20.

The storage unit 32 is configured by a device that does not require a storage holding operation, such as an HDD. The storage unit 32 stores submergence information 32a constituting the submergence information DB.

The control unit 33 is configured around a known computer including a CPU, ROM, RAM, I / O and a bus line connecting these, and is read from the storage unit 32 and loaded into the RAM. Operates according to programs.

Further, the display unit 34 is configured as a liquid crystal display or the like, and is a part that displays various information, and the operation unit 35 is configured as a keyboard, a mouse, or the like, and is a part that receives various operations.

<Description of operation>
Next, operation | movement of the communication system 1 of 1st Embodiment is demonstrated. In the communication system 1, the navigation device 10 mounted on each vehicle estimates the water depth at the submergence point based on the image captured by the camera 14 and transmits the estimated depth to the information center 30. On the other hand, the information center 30 accumulates the water depth at the flooding start point received from each navigation device 10, provides the water depth at the flooding point to a vehicle, a traffic information center, etc. Provide guidance. Below, operation | movement of the communication system 1 is demonstrated in detail.

(1) Road Information Acquisition Process First, the road information acquisition process in which the navigation device 10 acquires road information from the information center 30 will be described with reference to the flowchart of FIG. This process is periodically executed by the navigation device 10 during driving.

In S100, the control unit 13 of the navigation device 10 specifies the current location by the position detector 11, and transmits the position information of the current location and the latest road information around the current location to the information center 30 by the external communication unit 18. The request is transmitted, and the process proceeds to S105.

In S105, the control unit 13 determines whether or not road information around the current location is received from the information center 30, and if an affirmative determination is obtained (S105: Yes), the process proceeds to S110, and a negative determination is made. If it is obtained (S105: No), the process proceeds to S105.

In S110, the control unit 13 extracts the position information of the flooding point near the current location from the received road information around the current location. In subsequent S115, the control unit 13 includes the position information of the submergence point in the road information. If the information is successfully extracted (S115: Yes), the control unit 13 proceeds to S120. (S115: No), this process ends.

In S120, the control part 13 starts the approach determination process which determines whether the own vehicle is approaching the flooding point from which the positional information was extracted from road information, and complete | finishes this process.

(2) About the approach determination process Next, while determining whether the own vehicle is approaching the flooding point, the flowchart of FIG. It explains using. This process is a process executed by the navigation device 10 and is started in S120 of the road information acquisition process.

In S200, the control unit 13 of the navigation device 10 identifies the current location by the position detector 11, and compares the submergence point related to the location information extracted in S110 of the road information acquisition process with the current location. Then, based on the comparison result, the traveling direction of the own vehicle, the route being route-guided, etc., it is determined whether or not the own vehicle is approaching the flooding point (S205). When a positive determination is obtained in the determination (S205: Yes), the control unit 13 proceeds to S210, and when a negative determination is obtained (S205: No), the control unit 13 proceeds to S200.

In S210, the control unit 13 transmits a transmission request for the position information of the submergence point and the latest road information of the submergence point to the information center 30, and the process proceeds to S215.

In S215, the control unit 13 determines whether or not the latest road information on the submergence point has been received from the information center 30, and if an affirmative determination is obtained (S215: Yes), the process proceeds to S220, and denies When the determination is obtained (S215: No), the process proceeds to S215.

In S220, the control unit 13 determines whether or not the host vehicle can travel on the flooded point based on road information of the flooded point, the vehicle height of the host vehicle, and the like. Specifically, for example, if the road information of a submergence point includes information indicating the water depth of the point, if the water depth is equal to or less than a predetermined threshold, the user can travel at the submergence point. May be determined. Further, for example, when the road information of the submergence point indicates that it is impossible to travel through the point, it may be determined that the submergence point cannot travel. Then, when an affirmative determination is obtained (S220: Yes), the control unit 13 proceeds to S225, and when a negative determination is obtained (S220: No), the control unit 13 proceeds to S235.

In S225, the control unit 13 determines whether or not the own vehicle is passing the submergence point based on the current location of the own vehicle, and captures the submergence point with the camera 14 when passing through the submergence point, and proceeds to S230. To do.

In S230, the control unit 13 estimates the water depth at the submergence point based on the captured image (submergence image) of the submergence point. Specifically, for example, when the submergence point is an underpass or the like, a marker indicating the height from the ground may be drawn on the wall surface in order to make it easier to grasp the water depth when submergence occurs. is there. If such a marker 301 is shown in the image as in the submerged image 300, the water depth may be estimated based on the position of the marker 301 and the water surface 302 (FIG. 6).

Also, for example, if the vehicle is shown in the flooded image, the water depth may be estimated based on which part of the vehicle the water surface has reached. At this time, information (vehicle information) such as a vehicle type, a size and a type of the vehicle (for example, a type such as a normal car, a medium-sized car, a large car, a light car, a one-box car, an RV, etc.) In consideration of this, it is preferable to estimate the water depth.

By doing so, it is possible to estimate the water depth at the flooding point with high accuracy.

And the control part 13 transmits the positional information on a flooding point, and the estimation result (flooding information) of the water depth of this flooding point to the information center 30, and transfers to S200. The position information of the submergence point may be the position information of the current location specified by the position detector 11 or the position information of the submergence point used in the processing in S200 to S210. At this time, the estimation result of the water depth and the flooded image may be transmitted to the information center 30 as flooded information. At this time, vehicle information indicating the type of the own vehicle, the size of the vehicle, and the like may be added to the flood information.

On the other hand, in S235, which is shifted when it is determined that the vehicle cannot travel at the flooding point, the control unit 13 warns through the display unit 15 and the speaker 16 that the vehicle cannot travel at the flooding point that will soon arrive. And the process proceeds to S200.

In addition, when the own vehicle approaches the flooding point, the control unit 13 may photograph the flooding point with the camera 14 at that time. Further, when the host vehicle makes a U-turn just before the flooding point, the flooding point may be photographed by a camera that photographs the side or rear of the host vehicle during the U-turn. Then, similarly to S230, the water depth at the flooding point may be estimated, and the estimation result, the flooded image, and the like may be transmitted to the information center.

(3) Road Information Transmission Processing Next, road information transmission processing for transmitting road information from the information center 30 to the navigation device 10 will be described with reference to the flowchart of FIG. This process is started in response to an instruction from the administrator at the information center 30.

In S400, the control unit 33 of the information center 30 determines whether or not the navigation device 10 has received a transmission request for road information around the current location and the submergence point. If a positive determination is obtained (S400: Yes), the process proceeds to S405, and if a negative determination is obtained (S400: No), the process proceeds to S400.

In S405, when the control unit 33 receives a road information transmission request around the current location, the control unit 33 generates road information around the point indicated by the position information received together with the transmission request. Moreover, when the transmission request of the road information of a flooding point is received, the road information of the flooding point which the positional information received with the transmission request shows is produced | generated. The road information may be generated based on the flood information stored in the flood information DB.

In subsequent S410, the control unit 33 transmits the generated road information to the navigation device 10 that has transmitted the transmission request, and the process proceeds to S400.

(4) Submergence Information Storage Process Next, the submergence information storage process in which the information center 30 stores the submergence information received from the navigation device 10 will be described with reference to the flowchart of FIG. This process is started in response to an instruction from the administrator at the information center 30.

In S500, the control unit 33 of the information center 30 determines whether or not the flooding information and the location information of the flooding point are received from the navigation device 10. If an affirmative determination is obtained (S500: Yes), the process proceeds to S505. If a negative determination is obtained (S500: No), the process proceeds to S500.

In S505, the control unit 33 stores the received flood information in the flood information DB. Specifically, the received submergence information is stored in the storage unit 32 in association with the submergence point position information received together with the submergence information. Then, the process proceeds to S500.

(5) Submergence Information Provision Processing Next, submergence information provision processing in which the information center 30 provides submergence information will be described with reference to the flowchart of FIG. This process is started in response to an instruction from the administrator at the information center 30.

In S600, the control unit 33 of the information center 30 determines whether or not there is a request for providing submergence information at any submergence point. Specifically, the control unit 33 may receive such a request from an in-vehicle device, a server or a terminal constituting the road traffic information system, or the like via the wireless communication network 20 or the Internet. Further, such a request may be received by an operation on the operation unit 35 by an administrator or the like. When an affirmative determination is obtained (S600: Yes), the process proceeds to S605, and when a negative determination is obtained (S600: No), the process proceeds to S600.

In S605, the control unit 33 accesses the submergence information DB, reads out the submergence information of the submergence point related to the request, and transmits the read out submergence information as designated by the transmission source of the request or the operation to the operation unit 35. Send first. Then, the process proceeds to S600.

By doing so, the estimated depth of the water at the flooding point can be used in various situations. In addition, when the flooding information includes a flooding image, the situation at the flooding point can be easily and in detail, and countermeasures against flooding can be taken more appropriately.

In addition, when the flooding information includes the flooded image, it is assumed that the transmission source of the request is an in-vehicle device or a terminal operated by a user on the vehicle. In such a case, if the vehicle information described above is included in the flooding information and the vehicle information of the vehicle on which the in-vehicle device is mounted or the vehicle on which the user is riding is received together with the request, Based on this, the flood information generated by the same vehicle type as the vehicle or a vehicle having the same size as the vehicle may be specified. Then, the specified flood information may be transmitted to the transmission source. By doing so, the user can more accurately image the inundation situation at the inundation point based on the inundation image included in the inundation information.

Second Embodiment
Since the basic configuration of the second embodiment is the same as that of the first embodiment, the description of the common configuration will be omitted, and the description will focus on the differences. The communication system 1 according to the second embodiment is configured in the same manner as in the first embodiment, and as in the first embodiment, road information acquisition processing, approach determination processing, road information transmission processing, submergence information storage processing, submergence Information provision processing is performed.

However, in the communication system 1 according to the second embodiment, a danger point with a high risk of flooding during rain is registered in advance. The storage unit 32 of the information center 30 is different in that the location information of the dangerous point and the dangerous point image that is an image of the dangerous point that is not flooded are stored in association with each other ( Details will be described later).

Also, the navigation device 10 is different from the navigation device 10 in that the information center 30 estimates the water depth at the flooding point. Specifically, the approach determination process and the submergence information storage process are different from the first embodiment.

Hereinafter, the operation of the communication system 1 according to the second embodiment will be described focusing on the differences from the first embodiment.

(1) Approach determination process The approach determination process of the second embodiment is different from the approach determination process of the first embodiment in S230.

In S230, the control unit 13 of the navigation device 10 uses the captured image (submersion image) of the submergence point as inundation information, transmits the submergence point position information and the submergence information to the information center 30, and proceeds to S200.

As in the first embodiment, when it is determined that the vehicle cannot travel at the flooding point, if the vehicle approaches the flooding point, the control unit 13 captures the flooding point with the camera 14 at that time. May be. Further, when the host vehicle makes a U-turn just before the flooding point, the flooding point may be photographed by a camera that photographs the side or rear of the host vehicle during the U-turn. Then, in the same manner as in S230, the submergence point position information and the submergence image may be transmitted to the information center 30.

(2) Submergence Information Storage Process Next, the submergence information storage process of the second embodiment will be described with reference to the flowchart of FIG.

In S700, the control unit 33 of the information center 30 determines whether or not the flooding information and the location information of the flooding point are received from the navigation device 10. When an affirmative determination is obtained (S700: Yes), the process proceeds to S705, and when a negative determination is obtained (S700: No), the process proceeds to S700.

In S705, the control unit 33 estimates the water depth at the submergence point according to the positional information received together with the submergence information (submergence image). Specifically, the control unit 33 automatically estimates the water depth based on the inundation image, or accepts an input of an estimated value of the water depth from an administrator or the like, and adds the estimated value of the water depth to the inundation information. By estimating the water depth by the control unit 33, it is possible to estimate the water depth at the submergence point without bothering the administrator or the like.

The control unit 33 may determine which method is used to estimate the water depth according to the initial setting or an instruction received from an administrator or the like. Further, for example, when it is predicted that it is difficult for the control unit 33 to automatically estimate the water depth from the received submergence information (submersion image) or the like, an input of an estimated value of the water depth may be accepted.

Specifically, when the control unit 33 automatically estimates the water depth at the submergence point, the water depth is estimated based on the received submergence image in the same manner as S230 in the approach determination process of the first embodiment. By doing so, it is possible to estimate the water depth at the flooding point with high accuracy.

At this time, when the submergence point corresponds to the danger point, the control unit 33 estimates the water depth based on the danger point image 800 and the submergence image stored in the storage unit 32 in association with the danger point. (Fig. 11). Specifically, the water depth may be estimated based on the position of the ground in the danger point image 800 and the position of the water surface in the flooded image. The dangerous point image 800 is, for example, an image of a dangerous point that is an underpass. By doing so, it is possible to estimate the water depth at the flooding point with high accuracy.

As described above, the danger point image 800 is an image obtained by photographing a danger point in a state where there is no flooding. The display object 801 indicating the height from the ground is reflected in the image. Also good. The display object 801 may be arranged at a dangerous point at the time of photographing, or may be displayed on the dangerous point image 800 by processing an image obtained by photographing the dangerous point. And when the display thing is reflected in the danger point image, the control part 33 may estimate the water depth of a danger point based on the display thing in a danger point image, and the position of the water surface in a flooded image. By doing so, the water depth at the flooding point can be estimated with higher accuracy.

On the other hand, when receiving an input of an estimated value of the water depth from an administrator or the like, the control unit 33 displays the received flooded image on the display unit 34, and then receives an input of the estimated value of the water depth via the operation unit 35. May be. By doing so, an accurate estimate of water depth can be obtained.

At this time, when the submergence point corresponds to the danger point, the control unit 33 displays the danger point image 800 stored in the storage unit 32 in association with the danger point on the display unit 34 together with the submergence image. May be. Further, the display object 801 described above may be reflected in the danger point image 800. By doing so, a more accurate estimate of the water depth can be obtained.

Of course, it is needless to say that a dangerous point image where the display object 801 is not reflected may be displayed together with the flooded image. Moreover, the flooding image of the flooding point not corresponding to the dangerous spot is displayed on the display unit 34 alone.

In subsequent S710, the control unit 33 saves the flood information (the flooded image and the estimated value of the depth of the flooded point) in the flooded information DB. Specifically, the submergence information is stored in the storage unit 32 in association with the received position information of the submergence point. Then, the process proceeds to S700.

This will accumulate the estimated depth of the submergence point in the information center. For this reason, it is possible to grasp the water depth at the flooding point without providing monitoring equipment at a point where there is a risk of flooding, and it is possible to grasp the flooding situation in more detail at a low cost.

<Effect>
According to the communication system 1 of the first embodiment, a flooding point is photographed by the camera 14 mounted on the vehicle during rain, and the estimated depth of the flooding point based on the photographed image is accumulated in the information center 30. In addition, according to the communication system 1 of the second embodiment, the flooding point is photographed by the camera 14 mounted on the vehicle during rain, and the photographed image is accumulated in the information center 30. For this reason, it is possible to grasp the depth of the submergence point and to check the status of the submergence point with an image without installing monitoring equipment at the risk of submergence. It becomes possible to grasp in more detail.

Moreover, according to the flooding information provision processing in the second embodiment, it is possible to easily acquire an image of the flooding point. For this reason, the situation of the flooding point can be grasped easily and in detail, and measures for flooding can be taken more appropriately.

<Other embodiments>
As mentioned above, although embodiment was illustrated, embodiment can take a various form, without being limited to the said embodiment.

(1) In the first and second embodiments, the control unit 13 of the navigation device 10 identifies the submergence point based on the road information received from the information center 30 in S110 of the road information acquisition process.

However, the present invention is not limited to this, and the control unit 13 may specify a flooding point from information obtained by VICS (registered trademark), FM multiplex broadcasting, or the like, map information input from the map data input unit 12, or the like. The submergence point may be registered in advance, and the submergence point may be specified based on the information input from the map data input unit 12. Moreover, the information which shows the hazard map which a local government etc. provide from the map data input part 12 may be input, and a flooding point may be specified based on this information.

In addition, the control unit 13 may determine whether or not flooding has occurred around the subject vehicle based on the image captured by the camera 14, and if flooding has occurred, the surroundings of the subject vehicle may be regarded as a flooding point. Then, when passing through the submergence point or approaching the submergence point, the submergence information may be generated and transmitted to the information center 30 in the same manner as S225 to S230 in the approach determination process. Even in such a case, the same effect can be obtained.

(2) In the second embodiment, the control unit 33 of the information center 30 uses the submergence image received from the navigation device 10 and the estimated water depth at the submergence point as submergence information, and stores it in the submergence information DB. However, the present invention is not limited to this, and the control unit 33 may temporarily store them in the RAM after receiving the submergence image and the position information of the submergence point. Similarly, after obtaining an estimated value of the depth of the inundation point from the inundation image, the estimated value of the depth is stored in the inundation information DB as inundation information, and the inundation image is not stored in the inundation information DB. Also good. Even in such a case, the same effect can be obtained.

(3) The functions of one constituent element in the above embodiment may be distributed as a plurality of constituent elements, or the functions of a plurality of constituent elements may be integrated into one constituent element. Further, at least a part of the configuration of the above embodiment may be replaced with another configuration having the same function. Moreover, you may abbreviate | omit a part of structure of the said embodiment. In addition, at least a part of the configuration of the above embodiment may be added to or replaced with the configuration of the other embodiment.

(4) In addition to the communication system 1 described above, a system including the communication system 1 as a constituent element, a program for causing a computer to function as the navigation device 10 and the information center 30 configuring the communication system 1, Various embodiments such as a recorded non-transitory storage medium and a method corresponding to processing executed in the navigation device 10 or the information center 30 can be used.

The navigation device 10 in the first and second embodiments is an example of an in-vehicle device, the communication unit 31 in the information center 30 is an example of a receiving unit (means), the storage unit 32 is an example of an image storage unit (means), The estimated value of the water depth at the point corresponds to an example of the degree of flooding.

In the first embodiment, the marker 301 in the flooded image 300 corresponds to an example of a display object. In addition, S110 of the road information acquisition process corresponds to an example of a specific part (means), S225 of the approach determination process is an example of a photographing part (means), S230 is an estimation part (means), and a submergence information transmission part (means). S505 of the submergence information storage process corresponds to an example of a submergence information storage unit (means).

In the second embodiment, S110 of the road information acquisition process corresponds to an example of a specific unit (means), S225 of the approach determination process is an example of a photographing unit (means), and S230 is a submergence information transmission unit (means). S605 of submergence information provision processing corresponds to an example of a providing unit (means). Further, S705 of the submergence information storage process corresponds to an example of an estimation unit (means), a display unit (means), and a reception unit (means), and S710 corresponds to an example of a submergence information storage unit (means).

Claims

In a communication system (1) comprising an in-vehicle device (10) and an information center (30) that performs wireless communication with the in-vehicle device,
The in-vehicle device is
A specific part (S110) for identifying a submergence point where submergence has occurred or where there is a high risk of submergence;
When the host vehicle travels at or near the submergence point, an imaging unit (S225) that captures the submergence point with a camera mounted on the host vehicle;
An estimation unit (S230) that estimates a submergence degree at the submergence point based on a submergence image that is a captured image of the submergence point by the photographing unit;
A submergence information transmission unit (S230) that transmits the estimated submergence degree and the submergence point related to the submergence degree to the information center;
The information center
A receiving unit (31) for receiving the degree of flooding and the flooding point from the in-vehicle device;
A submergence information storage unit (S505) that stores the submergence degree in association with the submergence point received together with the submergence degree.
In a communication system (1) comprising an in-vehicle device (10) and an information center (30) that performs wireless communication with the in-vehicle device,
The in-vehicle device is
A specific part (S110) for identifying a submergence point where submergence has occurred or where there is a high risk of submergence;
When the host vehicle travels at or near the submergence point, an imaging unit (S225) that captures the submergence point with a camera mounted on the host vehicle;
A submergence image which is a captured image of the submergence point by the photographing unit, and a submergence information transmission unit (S230) which transmits the submergence point to the information center,
The information center
A receiving unit (31) for receiving the submergence image and the submergence point from the in-vehicle device;
A submergence information storage unit (S710) that stores the submergence image in association with the submergence point received together with the submergence image.
The communication system according to claim 2,
The information center further includes an estimation unit (S705) for estimating a submergence degree of the submergence point related to the submergence image based on the submergence image,
The said submergence information storage part is a communication system which further memorize | stores the said submergence degree estimated by the said estimation part by matching with the said submergence point which concerns on this submergence degree.
The communication system according to claim 2,
The information center
A display unit (S705) for displaying the flooded image;
A reception unit (S705) for receiving an input of the degree of flooding of the flooding point related to the flooded image displayed by the display unit;
The said submergence information storage part is a communication system which further memorize | stores the said submergence degree which the said reception part received the input corresponding with the said submergence point which concerns on this submergence degree.
In the communication system according to claim 1 or claim 3,
When the display object (301) indicating the height from the ground is reflected in the flooded image, the estimation unit estimates the degree of flooding based on the display object and the position of the water surface in the flooded image. Communications system.
The communication system according to claim 3,
The information center further includes an image storage unit (32) that stores a dangerous point image that is an image of the dangerous point in a state where the risk of flooding is high as a dangerous point and no flooding occurs.
In the case where the danger point image of the danger point corresponding to the flooding point received together with the flooded image is stored in the image storage unit, the estimation unit includes the flooding image and the danger point image. A communication system for estimating the degree of flooding based on the above.
The communication system according to claim 6,
In the danger point image, a display object (801) indicating the height from the ground is shown,
The estimation unit, when the danger point image of the danger point corresponding to the flooding point received together with the flooded image is stored in the image storage unit, the position of the water surface reflected in the flooded image And a communication system for estimating the degree of flooding based on the display object.
In the communication system according to claim 1 or claim 3,
The said estimation part is a communication system which estimates the said flooding degree based on this vehicle and the position of the water surface in this flooded image, when the vehicle is reflected in the said flooded image.
The communication system according to claim 4,
The information center further includes an image storage unit (32) that stores a dangerous point image that is an image of the dangerous point in a state where the risk of flooding is high as a dangerous point and no flooding occurs.
In the case where the danger point image of the danger point corresponding to the flooding point received together with the flooded image is stored in the image storage unit, the display part further includes the danger point together with the flooded image. A communication system for displaying images.
The communication system according to claim 9,
The danger point image includes a display object (801) indicating a height from the ground.
In the communication system according to any one of claims 2 to 4, 9, and 10,
The information center further includes a providing unit (S605) that provides the submergence image stored in the submergence information storage unit and the submergence point associated with the submergence image.
A specific part (S110) for identifying a submergence point where submergence has occurred or where there is a high risk of submergence;
When the host vehicle travels at or near the submergence point, an imaging unit (S225) that captures the submergence point with a camera mounted on the host vehicle;
An estimation unit (S230) that estimates a submergence degree at the submergence point based on a submergence image that is a captured image of the submergence point by the photographing unit;
A submergence information transmitter (S230) that transmits the estimated submergence degree and the submergence point related to the submergence degree to the information center by wireless communication;
A vehicle-mounted device (10) comprising:
A receiving unit (31) for receiving the submergence point and the submergence degree of the submergence point from the in-vehicle device (10) by wireless communication;
A submergence information storage unit (S505) for storing the submergence degree in association with the submergence point received together with the submergence degree;
An information center (30) comprising:
A specific part (S110) for identifying a submergence point where submergence has occurred or where there is a high risk of submergence;
When the host vehicle travels at or near the submergence point, an imaging unit (S225) that captures the submergence point with a camera mounted on the host vehicle;
A submergence image transmitting unit (S230) that transmits a submergence image that is a captured image of the submergence point by the photographing unit and the submergence point to the information center by wireless communication;
A vehicle-mounted device (10) comprising:
A receiving unit (31) that receives, from a vehicle-mounted device (10), a submergence point and a submergence image obtained by photographing the submergence point with a camera mounted on a vehicle on which the vehicle-mounted device is mounted, by wireless communication. When,
A submergence information storage unit (S710) for storing the submergence image in association with the submergence point received together with the submergence image;
An information center (30) comprising: