JP2018124602A - Vehicle alert system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle alert system for displaying a status of a road covered with water on a car navigation system.SOLUTION: An information providing unit 12 creates display information about a status of a road covered with water in such a manner that an icon for showing the water level of the road detected by each of cordless extension handsets a2-ai, b2-bi, ..., and m2-mi is displayed. A road-traffic-information providing center 15 requests the display information about the status of the road covered with water to the information providing unit 12, and transmits the delivered display information about the status of the road covered with water to a vehicle 10 together with the road traffic information. When a road traffic information receiver 10a the vehicle 10 has receives the display information about the status of the road covered with water, an icon is displayed showing the water level on the road or the like on a map displayed on the display of a car navigation system 10b.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle warning system capable of notifying a vehicle of a warning such as flooding using a system that provides road traffic information.

  Non-Patent Document 1 Ministry of Land, Infrastructure, Transport and Tourism Hazard Map Portal Site (http://disaportal.gsi.go.jp/index.html) has published hazard maps as disaster prevention information. Overlapping hazard maps allow you to view inundated areas, road information, danger points, etc. on maps and aerial photos, and display seamless maps that cross the boundaries of prefectures and cities. . In this hazard map, it becomes an information map which displayed the range and depth regarding the prediction area of flood occurrence.

In addition, a conventional real-time dynamic inundation simulation system of Patent Document 1 that can provide a flood hazard map corresponding to actual floods / flooding that changes every moment has been proposed.
In this conventional real-time dynamic inundation simulation system, a river information database, a floodplain database, a runoff analysis means, a river channel water level prediction means, a breakwater inflow calculation means, a flood analysis means, a feedback correction means, Combined with simulation display means and data distribution means that automatically send map information, address / landmark information, rain river information, and flood hazard map related information from the distribution server, it is used by the Internet, personal computer communications, and networks. Deliver automatically from platforms that can.

Ministry of Land, Infrastructure, Transport and Tourism hazard map portal site [online], [searched on September 15, 2016], Internet <http://disaportal.gsi.go.jp/index.html>

JP 2004-197554 A

  In order to view a conventional hazard map in the vehicle, it is necessary to provide or carry information devices that can be viewed in the vehicle. There is also a system known as “VICS (Vehicle Information and Communication System)” that delivers road traffic information such as traffic jams and traffic regulations to car navigation systems mounted on vehicles in real time using FM multiplex broadcasting and beacons. . In VICS, in addition to traffic jam information, heavy rain warnings and precipitation information can be transmitted to the driver via the navigation system. However, since the visibility is poor during heavy rains, the current situation is that the situation such as flooding of roads depends on visual observation. Then, even if information on heavy rain warning / precipitation information, for example, is obtained using VICS, there is a risk of entering the flooded area due to poor visibility during heavy rain.

  Accordingly, an object of the present invention is to provide a vehicle warning system that can display a flooding situation on a road on a car navigation system.

  The vehicle alarm system of the present invention has at least a water level sensor, sends coordinate information of the installed point, and is acquired as an acquired water level when the water level detected by the water level sensor becomes a significant water level. The coordinate information and the water level information transmitted from the plurality of slave units that have a communication area within a predetermined range and that are installed in the communication area. And receiving the coordinate information and the water level information transmitted from the plurality of master units, and responding to the position of the coordinate information according to the water level information. An information providing unit that creates display information on the flooding status on which an icon indicating the water level is displayed, and a road traffic information providing center that provides road traffic information to the car navigation system of the vehicle, The traffic information providing center requests the information providing unit for display information on the inundation status, and transmits the inundation status display information distributed from the information providing unit to the car navigation system of the vehicle together with road traffic information. This is the most important feature.

  In the vehicle warning system of the present invention, the flood information display information is transmitted to the car navigation system of the vehicle together with the road traffic information, and the flood information display information is displayed on the display of the car navigation system. In the display information, an icon indicating the water level of the road and the like is displayed, so that the vehicle driver can grasp the road surface condition and submergence location of the surrounding road in advance by looking at the car navigation system. Planing phenomenon can be prevented.

It is a functional block diagram which shows the structure of the vehicle warning system concerning the Example of this invention. It is a figure which shows the example of the installation position of a main | base station and a subunit | mobile_unit in the vehicle alarm system concerning the Example of this invention. It is a figure which shows the example by which the display information of the flooding condition produced with the vehicle warning system concerning the Example of this invention was shown. In the vehicle warning system concerning the Example of this invention, it is a figure which shows the example of the warning display of a subunit | mobile_unit. In the vehicle alarm system concerning the Example of this invention, it is a figure which shows the aspect of the warning display of a subunit | mobile_unit. It is a functional block diagram which shows the structure of the subunit | mobile_unit in the vehicle warning system concerning the Example of this invention. It is a functional block diagram which shows the structure of the main | base station in the vehicle warning system concerning the Example of this invention. It is a functional block diagram which shows the structure of the subunit | mobile_unit of the subunit | mobile_unit in the vehicle alarm system concerning the Example of this invention, and the parent machine's microcontroller. It is a functional block diagram which shows the structure of the information provision part in the vehicle warning system concerning the Example of this invention, the structure of an information delivery server, a data processing server, and a database part. It is a flowchart of the subunit | mobile_unit process performed with the subunit | mobile_unit in the vehicle warning system concerning the Example of this invention. It is a flowchart of the main | base station process performed with the main | base station in the vehicle warning system concerning the Example of this invention. It is a flowchart of DB write-in processing performed by the information provision part in the vehicle warning system concerning the Example of this invention. It is a flowchart of the flood condition request | requirement process performed in the information provision part in the vehicle warning system concerning the Example of this invention. It is a flowchart of the flooding condition preparation process performed in the information provision part in the vehicle warning system concerning the Example of this invention. It is a flowchart of the traffic information delivery process performed in the road traffic information provision center in the vehicle warning system concerning the Example of this invention. It is a flowchart of the traffic information display process performed with the car navigation system in the vehicle warning system concerning the Example of this invention.

A configuration of a vehicle alarm system 1 according to an embodiment of the present invention is shown in FIG. In the vehicle warning system 1 according to the present invention, the display information of the flooding status in which the flooded water level is displayed can be displayed on the car navigation system 10b of the vehicle 10.
In describing the vehicle warning system 1 according to the present invention, it is generally referred to as “flooding” when a house or the like is immersed in water, and “flooding” when a field or road is immersed in water. In the book, "flooding" and "flooding" are treated as synonyms that mean that houses, fields, roads, etc. are immersed in water. In the following explanation, "flooding" is used unless otherwise specified.
A vehicle warning system 1 shown in FIG. 1 includes a vehicle 10, an information providing unit 12, a road traffic information providing center 15, and a sensing unit 2, and the units are connected by a communication network. That is, the information providing unit 12, the vehicle 10, and the road traffic information providing center 15 are connected by a communication network 11 including a public communication network or an Internet communication network connecting bases shared and used by an unspecified number of users. The sensing unit 2 and the information providing unit 12 are connected by a wide area communication network 13 including an Internet communication network or a public communication network.
The sensing unit 2 includes a plurality of closed communication networks 14a, 14b,..., 14m, and the closed communication networks 14a to 14m are installed for each region divided into m regions. That is, the closed communication networks 14a to 14m that cover the entire area are installed. The closed communication network is a communication network that uses a dedicated communication line, and is a communication network that can prevent the possibility of data being intercepted or tampered with.

  The first closed communication network 14a includes a parent device a1, and a plurality of child devices a2, a3,..., Ai belong to the first closed communication network 14a. The parent device a1 is connected to (i-1) slave devices a2 to ai installed at predetermined points in the area assigned to the closed communication network 14a by wired or wireless closed communication. The subunit | mobile_unit a2-ai is made the same structure, and each is equipped with the water level sensor which detects the water level of the installed point. When each of the slave units a2 to ai is installed at a predetermined point and the power is turned on for the first time, each of the slave units a2 to ai has a unique individual identification number, a slave unit ID, and location information of the installed point. Is transmitted to the parent device a1 to establish communication between them. And the subunit | mobile_unit a2-ai is the time information when the said subunit | mobile_unit acquired the water level sensor information which the water level sensor detected when the equipped water level sensor detected the significant water level exceeding the regulation water level, and the said subunit | mobile_unit acquired the water level. The slave unit ID is added to the water level information including and sent to the master unit a1. After the slave devices a2 to ai detect a significant water level, the water level information with ID is sent to the master device a1 every predetermined time.

  The second closed communication network 14b to the mth closed communication network 14m operate in the same manner as the first closed communication network 14a. That is, each of the second closed communication network 14b to the m-th closed communication network 14m includes master units b1 to m1, and a plurality of slave units b2, b3,..., Bj to slave units m2 to mk are included. It belongs to each of the second closed communication network 14b to the m-th closed communication network 14m. The base units b1 to m1 are (j-1) slave units b2 installed at predetermined points in the areas assigned to the second closed communication network 14b to the mth closed communication network 14m, respectively. Bi or (k-1) slave units m2 to mk are connected by wired or wireless closed communication. The subunit | mobile_unit b2-bj thru | or the subunit | mobile_unit m2-mk are set as the structure same as the subunit | mobile_unit a2-ai, and each is equipped with the water level sensor which detects the water level of the installed point. When the slave units b2 to bi or the slave units m2 to mk are respectively installed at predetermined points and the power is turned on for the first time, each of the slave units b2 to bj or the slave units m2 to mk is a unique individual identification number. The slave unit ID and the location information of the installed point are transmitted to each of the master units b1 to m1 to establish communication between them. And the subunit | mobile_unit b2-bj thru | or the subunit | mobile_unit m2-mk are the sensor information of the water level which the water level sensor detected when the equipped water level sensor detected the significant water level exceeding the regulation water level, and the said subunit | mobile_unit is a water level. Is added to the water level information including the time information obtained and sent to each of the parent devices b1 to m1. After the slave devices b2 to bj or the slave devices m2 to mk detect a significant water level, water level information with an ID is sent to the master devices b1 to m1 every predetermined time.

Here, although the structure of the subunit | mobile_unit a2-ai, the subunit | mobile_unit b2-bi thru | or the subunit | mobile_unit m2-mk is demonstrated, since all the subunit | mobile_units are set as the same structure, in the following description, subunit | mobile_unit a2 ˜ai, slave devices b2 to bj, and slave devices m2 to mk are generically indicated, or when any one is indicated, the slave device 20 is described. FIG. 6 shows a functional block diagram of the handset 20.
As shown in FIG. 6, the subunit | mobile_unit 20 is equipped with the microcontroller 21, the sensor 22, the positioning device 23, the warning indicator 24, and the closed region network communication I / F25, and these are connected by the bus | bath. Moreover, the power supply device 26 which supplies a power supply to each part is provided. The microcontroller 21 is a control unit that performs overall control of the operation of the slave unit 20 and has a clock function. Specifically, the microcontroller 21 acquires the sensor information of the water level detected by the sensor 22, captures the acquired time information, and writes the sensor information with the time information in the internal temporary memory. Further, the position information of the point where the handset 20 is installed is written in the temporary memory. In this case, the position information of the child device 20 is the position information obtained by the position positioning device 23 in the child device 20 using GPS or the like and acquired from the sensor information, or the position information of the child device 20 directly input. The Further, when a switch (not shown) is turned on and power is supplied from the power supply device 26, the slave unit 20 is initialized. Then, when the acquisition of the position information is finished, the unique communication device ID assigned to the child device 20 is added to the position information of the child device 20 written in the temporary memory, and the closed communication network Transmission is performed from the communication I / F 25 to the parent device a1. When the microcontroller 21 determines that the water level acquired from the sensor 22 has exceeded the specified water level, the microcontroller 21 adds the slave unit ID to the water level information including the sensor information and the acquired time information, and closes the region. A warning indicator 24 for notifying that the specified water level has been exceeded is turned on while being transmitted to the base unit a1 via the communication network communication I / F 25 every predetermined time. As a result, by observing the slave 20, it can be seen that the water level at the location of the slave has exceeded the specified water level. The warning indicator 24 can be constituted by a light emitting device such as a light emitting diode (LED). In addition, the power supply device 26 can be comprised from a large capacity capacitor or a secondary battery, and the solar panel for charge.
Note that the slave units a2 to ai, the slave units b2 to bj, and the slave units m2 to mk in the first closed communication network 14a to the mth closed communication network 14m are located at points in the area assigned to each closed communication network. Although it is installed, it is preferable to focus on the location where flooding is likely to occur, considering past flood damage information and altitude above sea level.

  The configuration of the microcontroller 21 will be described. FIG. 8 is a functional block diagram showing the configuration of the microcontroller 21. As shown in FIG. 8, the microcontroller 21 includes a central processing unit (CPU) 41, a read only memory (ROM) 42, a random access memory (RAM) 43, and an I / O 44, which are connected by a bus 45. Has been. The CPU 41 executes the control program stored in the ROM 42 so that the microcontroller 21 operates as described above. In this case, the temporary memory is set in the RAM 43 area. When the power is turned on, the CPU 41 executes an initial setting program stored in the ROM 42, and the microcontroller 21 operates as described above. The microcontroller 21 is connected to the bus of the slave unit 20 via the I / O 44.

Next, the configurations of the parent devices a1 to m1 will be described. Since the configurations are the same, in the following description, when the parent device a1 to the parent device m1 are collectively indicated, or one of them is indicated. It will sometimes be described as the base unit 30. FIG. 7 shows a functional block diagram of base unit 30.
As shown in FIG. 7, the base unit 30 includes a microcontroller 31, a wide area communication network communication I / F 32, and a closed area communication network communication I / F 33, which are connected by a bus. Moreover, the power supply device 34 which supplies a power supply to each part is provided. The microcontroller 31 has the same configuration as that shown in FIG. 8 and includes a CPU 41, a ROM 42, a RAM 43, and an I / O 44, which are connected by a bus 45. The control program is stored. In the microcontroller 31, the CPU 41 executes a control program for the parent device 30 stored in the ROM 42, thereby performing overall control of the operation of the parent device 30. That is, the CPU 41 in the microcontroller 31 receives the location information with the slave unit ID and the water level information with the slave unit ID transmitted from the slave unit 20 via the closed network communication I / F 33 and sets them in the area of the RAM 43. To the temporary memory. Then, the CPU 41 transmits the position information with the child device ID and the water level information with the child device ID received from the child device 20 to the information providing unit 12 via the wide area communication network communication I / F 32. The power supply device 34 is a power supply device that steps down the commercial power supply to a predetermined DC voltage. Further, the power supply device 34 may be configured by a large-capacity capacitor or a secondary battery that matches the amount of power used instead of a commercial power supply, and a solar panel for charging.

As described above, in the first closed communication network 14a to the mth closed communication network 14m, the parent device a1 to the parent device m1 are installed with the child device ID sent from the child device belonging to the closed communication network. When the location information of the point and the water level information (sensor information + time information) with the slave unit ID are received, each of the master unit a1 to the master unit m1 passes through the wide area communication network 13 including the Internet communication network and the public communication network. The information providing unit 12 is sent with the received location information of the place with the handset ID and the water level information with the handset ID. The information providing unit 12 includes an information distribution server 12a, a data processing server 12b, and a database unit 12c. The configuration of the information providing unit 12 is shown in FIG.
In the information providing unit 12 having the configuration shown in FIG. 9A, data sent from the parent device a1 to the parent device m1 via the wide area communication network 13 is received via the wide area communication network communication I / F 12d. Passed to the data processing server 12b. If the received data is position information with a child device ID, the data processing server 12b associates the position information with the child device ID and writes it in the sensor coordinate DB (DB: database) 51 of the database unit 12c. This position information indicates coordinates on the map. In the case of water level information (sensor information + time information) with a slave unit ID, the water level information (sensor information + time information) with a slave unit ID is associated with the slave unit ID and the acquisition time together with the current time, and the database unit 12c. Is written in the sensor information DB 52. Thereby, the water level information (sensor information + time information) detected by the slave units a2 to ai, the slave units b2 to bj, and the slave units m2 to mk sent from the master unit a1 to the master unit m1 is the slave unit ID and It is associated and written to the sensor information DB 52 every moment.

The database unit 12c includes a sensor coordinate DB that stores the position information of each child device 20 in association with the child device ID, a sensor information DB 52 that stores water level information in association with the child device ID and the acquisition time, and a refuge and underpass Evacuation information DB 53 in which coordinates such as coordinates and areas with low sea level are stored, for example, a map that holds coordinate data as map information in addition to wide-area terrain, roads, and rivers that create hazard maps that are assumed to be nationwide in Japan An information DB 54 and a registrant information DB 55 in which information of registrants for each area for notifying that there is a risk of flooding are provided.
The data processing device 50 provided in the information distribution server 12a, when the information distribution server 12a accepts the flooding status acquisition request, the flooding is determined from the water level information of each slave 20 stored in the sensor information DB 52. It detects whether it has occurred at the present time, and if it has occurred, creates display information on the flooding situation in the flooded area. In this case, when there are a plurality of flooded areas, display information on the flooding status is created for each area. The inundation status acquisition request is made by the road traffic information providing center 15 at predetermined time intervals, and the created inundation status display information is distributed from the information distribution server 12a to the road traffic information providing center 15. In the display information of the submergence status, the icons indicating the water level of the water level information detected by the respective slave units 20 of the slave units a2 to ai, the slave units b2 to bj, and the slave units m2 to mk are each child that has acquired the water level information. Display information arranged at the coordinates of the installation position of the machine 20 is set. This display information can include an evacuation shelter, an underpass icon, and an icon indicating that the flood has occurred.

  Specifically, the data processing device 50 determines a predetermined area including a point where the flood is occurring, and detects the coordinates and the current time requested for acquisition. And the data processor 50 is the water level information which the subunit | mobile_unit 20 installed in the predetermined | prescribed area detected, Comprising: The acquired time stored in sensor information DB52 reads the water level information nearest to the present time one by one . Next, an icon representing the water level indicated by the sensor information in the water level information is arranged at the coordinates of the installation position of the child device 20 corresponding to the child device ID associated with the water level information, and the submergence at the current time. Status display information is created. The created display information of the flooding situation is distributed to the road traffic information providing center 15, and the road traffic information providing center 15 transmits the traffic information including the flooding situation display information of the given area into the given area. When the traffic information including the transmitted flood information display information is received by the road traffic information receiver 10a mounted on the vehicle, a map showing the traveling position of the vehicle displayed on the display of the car navigation system 10b The display information of the submergence status is displayed on the screen. That is, an icon indicating the water level at the current time is displayed on the displayed map at the coordinates of the map corresponding to the installation position of each handset 20 that acquired the water level information. Thereby, the vehicle driver can grasp the road surface condition and the flooded place of the surrounding road in advance by looking at the car navigation system 10b, and can prevent submergence and hydroplaning phenomenon.

  Note that the submergence status display information is created for each predetermined area. In this case, there are many cases where there are a plurality of points (installation positions of the slave units 20) where flooding occurs in one predetermined area. In addition, when there are a plurality of locations where the submergence occurs (installation position of the slave unit 20) beyond one predetermined area, a new predetermined area including the location where the submergence occurs is determined, and Display information on the flooded situation is newly created. As for the flood information display information created for each area, traffic information including only the flood information display information corresponding to the area is transmitted from the road traffic information providing center 15 to the area. That is, when the road traffic information receiver 10a mounted on the vehicle in the area receives the traffic information, the area of the map showing the traveling position of the vehicle displayed on the display of the car navigation system 10b is This corresponds to the display information area of the flooding status included in the received traffic information. Thereby, the icon which shows the water level in the display information of a flooding condition comes to be overlaid on the coordinate position of the map currently displayed on the display of the car navigation system 10b.

  FIG. 9B shows the configuration of the information distribution server 12a. The information distribution server 12a shown in FIG. 9B includes a CPU 61, a ROM 62, a RAM 63, an I / O 64, and a data processing device 50, and these are connected by a bus 65. The CPU 61 is a control unit that performs overall control of the operation of the information distribution server 12a. When the CPU 61 executes a control program stored in the ROM 62, the data processing device 50 is submerged when a flooding status acquisition request is issued. The above-described operation of creating and distributing the display information of the flood condition for each area is performed.

  Further, the data processing server 12b and the data processing device 50 can be configured as shown in FIG. A data processing device 50 (data processing server 12b) shown in FIG. 9C includes a CPU 71, a ROM 72, a RAM 73, and an I / O 74, and these are connected by a bus 75. In the case of the data processing device 50, the ROM 72 stores a control program for overall control of the operation of the data processing device 50, and when the CPU 71 executes this control program, there is a request for obtaining the flooding status. Create display information on the flooding status of the flooded area. In the case of the data processing server 12b, the ROM 72 stores a control program for overall control of the operation of the data processing server 12b, and the CPU 71 executes the control program to obtain the position information of the slave unit 20 as the slave unit. In addition to writing in the sensor coordinate DB 51 in association with the ID, the water level information (sensor information + time information) detected by the slave unit 20 is written in the sensor information DB 52 in association with the slave unit ID. .

Next, in the vehicle alarm system 1 according to the embodiment of the present invention, the installation positions of the parent device 30 and the child device 20 are shown in a schematic map in FIG.
FIG. 2 is a map showing a position where the child device 20 is actually installed. A parent device 30 having jurisdiction over at least the area A is installed in a block A-5 in the center of the area A. Sixteen slave units 20-1 to 20-16 are installed in the blocks A-1 to A-9. In this case, you may make it arrange | position the subunit | mobile_unit 20 focusing on the area where flooding is foreseen. That is, the slave unit 20-1 to the slave unit 20-7, the slave unit 20-9 to the slave unit 20-13, and the slave unit 20-15 are arranged on the road between the blocks A-1 to A-9, and the block A slave unit 20-8 is arranged in A-6, a slave unit 20-14 is arranged in block A-8, and a slave unit 20-16 is arranged in block A-9.

  An example in which the display information of the flooding situation created in the vehicle warning system 1 according to the embodiment of the present invention is displayed superimposed on the map showing the traveling position of the vehicle displayed on the display of the car navigation system 10b. As shown in FIG. However, in FIG. 3, a map showing the traveling position of the vehicle is simplified. The area A shown in FIG. 3 is a map of a range indicated as a vehicle position C indicated by a triangle in which the traveling position and traveling direction of the vehicle are filled, and the time is 9:59 which is the current time. Yes. Note that area A in FIG. 3 and area A in FIG. 2 are in the same range. In area A shown in FIG. 3, the upper part of the page indicates north, and at time 9:59, the water level indicates that a plurality of handset 20 installed at a point in area A detects a significant water level. Is indicated by an icon indicating the height. That is, the water level of the road between the block A-4 and the block A-5 is detected as 100 mm or more and less than 200 mm by the slave unit 20-6, and the slave unit 20-7 detects the block A-5 and the block A-6. The water level of the road in between is detected as 100 mm or more and less than 200 mm, and the water level of the road between the block A-5 and the block A-8 is detected as 200 mm or more and less than 400 mm by the slave unit 20-10. 20-11, the water level of the road between blocks A-5, A-6, A-8, and A-9 is detected as 100 mm or more and less than 200 mm. Further, the water level of the road between the block A-7 and the block A-8 is detected by the slave unit 20-13 to be 200 mm or more and less than 400 mm, and the water level in the block A-8 is detected to be 200 mm or more by the slave unit 20-14. The water level of the road between the block A-8 and the block A-9 is detected as 100 mm or more and less than 200 mm by the slave unit 20-15. Further, it is displayed that evacuation site B is located in block A-3 and evacuation site A is located in block A-8.

  Moreover, when the water level of the subunit | mobile_unit 20-1 to 20-16 installed in the area A exceeds a regulation water level, the warning display can be performed in the subunit | mobile_unit 20 exceeding the regulation water level. The warning display is performed by turning on the warning indicator 24 in the slave units 20-1 to 20-16 that have detected the water level exceeding the specified water level. A vehicle or a user in the area A can know the flood condition by looking at the warning display. Note that the warning display is performed with the light emission pattern of the warning indicator 24 that schematically represents the flooded water level.

By the way, the subunit | mobile_unit 20 in the vehicle warning system 1 concerning the Example of this invention is realizable with a road accessory. The road accessories are gaze guidance marks, boundary blocks, curbs, support pillars, guard fences, wall structures, signs, delineators, road fences, and the like. By integrating or attaching the slave unit 20 to these road accessories, the road accessory functions as the slave unit 20. In this case, if the power supply device 26 of the slave unit 20 is composed of a battery or a secondary battery or a large capacity capacitor and a solar panel for charging, and the closed communication network is wireless, the ground other than the road where an external power source cannot be secured It is possible to install the road accessory that functions as the handset 20 on the ground such as parks, shelters, plazas, paddy fields, rice fields, gardens of houses, riverbeds, and the like.
FIG. 5 shows a warning display mode in the warning display unit when the slave unit 20 is realized by a line-of-sight guide. The line-of-sight guidance mark is a road accessory installed on the roadside or on the road. The reason for installing is as follows. Automobile drivers are driving as landmarks when traveling on lane markings, protective fences, etc., but it is known that the visibility is significantly reduced at night, fog, rain, and snow. In view of this, the gaze guidance mark reflects the headlight of the automobile even when the visibility is poor, thereby improving the visibility of the roadside and road alignment, and correctly guiding the driver's gaze.

As shown in FIG. 5, the subunit | mobile_unit 20 which consists of a line-of-sight guidance mark is provided with the cylindrical pole part 20a and the disk-shaped base 20b, and can become independent by the effect | action of the base 20b. The pole portion 20a is provided with a reflection glass or a reflection sheet reflection portion, and a warning indicator 24 is provided inside the pole portion 20a of the reflection portion. The warning indicator 24 is provided with four light emitting units stacked in the vertical direction. The warning display is performed by the light emission pattern of the four light emitting units, and the water level detected by the slave unit 20 is indicated by the light emission pattern. . That is, when the water level is lower than the specified water level, all the four light emitting units are turned off, and when the water level is higher than the specified water level and less than 50 mm, only the lowermost light emitting unit is turned on, and the three light emitting units from the top are turned on. Turns off. In addition, when the water level is 50 mm or more and less than 100 mm, the lowermost light emitting unit and the light emitting unit thereon are turned on, and the light emitting units of the second step from the top are turned off. Further, when the water level is 100 mm or more and less than 200 mm, a total of three light emitting units, the lowermost step and the upper two steps, are turned on, and the uppermost light emitting unit is turned off. Further, when the water level is 200 mm or more and less than 400 mm, all the stages of the four light emitting units are turned on.
In addition, the subunit | mobile_unit 20 can be implement | achieved not only with a line-of-sight guidance mark but with any of the above-mentioned road accessories.

  Next, FIG. 10 shows a flowchart of a slave unit process executed in the slave unit 20. When the handset 20 is installed at a predetermined point and the power supply device 26 is turned on, the microcontroller 21 starts the handset processing shown in FIG. Although the slave unit processing is actually executed by the CPU 41 in the microcontroller 21, it will be described as being executed by the microcontroller 21 for convenience of explanation. When the slave unit processing is started, in step S10, the microcontroller 21 receives the position information indicating the coordinates of the position where the positioning unit 23 is located, that is, the point where the slave unit 20 is installed, from a positioning unit such as GPS. It is determined whether or not it has been acquired. Here, when position information is not acquired (NO), it waits until it acquires, and when the microcontroller 21 judges that position information was acquired (YES), it progresses to step S11. In step S <b> 11, the microcontroller 21 adds the child device ID assigned to the child device 20 to the acquired position information, and transmits it to the parent device 30 to which the child device 20 belongs via the closed communication network. Next, in step S12, the microcontroller 21 detects the water level detected by the sensor 22 and its acquisition time. Next, in step S13, the microcontroller 21 determines whether or not the detected water level has exceeded a predetermined regulated water level. If the microcontroller 21 determines that the specified water level has been exceeded (YES), the process proceeds to step S14, where the microcontroller 21 lights up the warning indicator 24 and displays a warning. This warning display is a warning display that flooding has occurred. Next, in step S15, the microcontroller 21 transmits the sensor information acquired from the sensor 22 and the water level information including the acquisition time to the parent device 30 to which it belongs via the closed communication network. Next, the process proceeds to step S16, where the microcontroller 21 waits for a short period of time, for example, 1 minute, returns to step S12 when the short-term standby time ends, and repeats the processes of steps S12 to S16 described above. . Thereby, as long as the state in which the microcontroller 21 has determined that the specified water level has been exceeded in step S13 continues, the microcontroller 21 acquires the sensor information acquired from the sensor 22 every short period (for example, 1 minute) and the sensor information. The water level information including the acquisition time is transmitted to the master unit 30.

If the microcontroller 21 determines that the water level detected in step S13 does not exceed the specified water level (NO), the process branches to step S17, and the microcontroller 21 lights the warning display on the warning indicator 24. If it is, the warning display is turned off. Next, in step S18, the microcontroller 21 determines whether or not a long time of, for example, 12 hours has elapsed since the previous transmission to the parent device 30. If the microcontroller 21 determines that a long time has elapsed (YES), the process proceeds to step S19, and the water level information including the sensor information acquired from the sensor 22 and the acquisition time is transmitted to the master unit 30. Then, the process proceeds to step S20. If the microcontroller 21 determines in step S18 that a long time has not elapsed (NO), the process branches to step S20. In step S20, the microcontroller 21 waits for a middle period of, for example, 10 minutes, returns to step S12, and repeats the processing from step S12 described above. Thereby, as long as the state in which the microcontroller 21 determines that the specified water level is not exceeded in step S13 continues, the microcontroller 21 acquires the sensor information acquired from the sensor 22 every long period (for example, 12 hours). And the water level information which consists of the acquisition time is transmitted to the main | base station 30, and the process after step S12 is repeatedly performed for every middle period (for example, 10 minutes).
The handset processing is executed as long as the power supply device 26 of the handset 20 is turned on, and the handset processing ends when the power supply device 26 is turned off.

  Next, FIG. 11 shows a flowchart of parent device processing executed by the parent device 30. When the parent device 30 is installed at a predetermined location and the power supply 34 is turned on, the microcontroller 31 starts the parent device processing shown in FIG. Although the parent machine process is actually executed by the CPU 41 in the microcontroller 31, it will be described as being executed by the microcontroller 31 for convenience of explanation. When the parent device process is started, the microcontroller 31 receives data transmitted from the child device 20 belonging to the parent device 30 in step S30. When the data is an ID and an authentication password, the microcontroller 31 performs connection authentication and establishes communication between the child device 20 and the parent device 30. In the connection authentication, the connection authentication is performed by checking the coincidence with the authentication password corresponding to the ID of the slave unit 20 in which the microcontroller 31 is stored. If the data is the position information of the slave unit 20 to which the ID is added or the water level information including the sensor information acquired by the slave unit 20 and the acquisition time, the process proceeds to step S31, and the microcontroller 31 transmits the wide area communication network 13 The data sent from the slave unit 20 is transmitted to the data processing server 12b of the information providing unit 12 via Transmission from the parent device 30 to the data processing server 12b of the information providing unit 12 is performed every time data from the child device 20 is received. The master unit process ends when the power supply 34 is turned off.

The information providing unit 12 obtains the location information of the slave unit 20 to which the ID transmitted from the master unit 30 is added, or the water level information including the sensor information acquired by the slave unit 20 and the acquisition time, from the wide area communication network communication I / Received via F12d, the data processing server 12b stores it in the sensor coordinate DB 51 or the sensor information DB 52. FIG. 12 shows a flowchart of the DB writing process executed by the data processing server 12b.
The DB writing process shown in FIG. 12 starts when the data processing server 12b is powered on. When activated, the CPU 71 receives data from the parent device 30 in step S40. If it cannot be received, it waits until it can be received. The received data is the position information of the slave unit 20 to which the ID is added or the water level information including the sensor information acquired by the slave unit 20 and the acquisition time. Next, in step S41, if the received data is the position information of the slave unit 20 to which the ID is added, the CPU 71 writes the location information in association with the ID into the sensor coordinate DB 51 via the I / O 74, and the slave unit In the case of the sensor information 20 acquired, the acquisition time and the water level information are written in the sensor information DB 52 via the I / O 74 in association with the ID of the slave unit 20 that acquired the information. When the process of step S41 ends, the process returns to step S40, and the processes of steps S40 and S41 are repeatedly executed. The DB writing process ends when the data processing server 12b is powered off.

Next, FIG. 13 shows a flowchart of the flood condition request process executed by the information distribution server 12a. The flood condition request process shown in FIG. 13 is started when the information distribution server 12a is powered on. The information distribution server 12a is configured as shown in FIG. 14B as described above.
When the submergence status request process is activated, in step S70, the CPU 61 determines whether or not there is a submergence status acquisition request from the road traffic information provision center 15. Here, when there is no acquisition request of the flood condition from the road traffic information provision center 15 (NO), it waits in step S70 until there is an acquisition request. If the CPU 61 determines that there is a flooding status acquisition request from the road traffic information providing center 15 in step S70 (YES), the process proceeds to step S71, and the CPU 61 determines whether flooding has occurred. Here, the CPU 61 refers to the water level information of each child device 20 stored in the sensor information DB 52 and detects that the water level of the sensor information in the water level information exceeds a predetermined water level. It is determined whether or not flooding has occurred at the installation point of the slave unit 20. If the CPU 61 determines that flooding has occurred (YES), the process proceeds to step S72, and the CPU 61 causes the data processing device 50 to create display information on the flooding status. In step S73, the CPU 61 distributes the created submergence display information to the road traffic information providing center 15 that is the request source. If the CPU 61 determines in step S71 that it is not submerged (NO), the process branches to step S74 and a message indicating that no submergence has occurred is delivered to the road traffic information providing center 15. When the process of step S73 or step S74 ends, the process returns to step S70, and the processes of step S70 to step S74 are repeated. The flooding status request process ends when the information distribution server 12a is powered off.

FIG. 14 is a flowchart of the submergence situation creation process for creating the submergence situation display information executed in step S72 of the submergence situation request process. 14 is executed by the data processing device 50 of the information distribution server 12a.
When the processing of step S72 of the submergence status request processing is started, the submergence status request processing is started, and in step S80, a predetermined area that is submerged or a predetermined area designated by the request source is determined, and the predetermined area of the predetermined area is determined. The CPU 71 detects the coordinates and the current time of the acquisition request. In step S81, the CPU 71 acquires from the sensor information DB 52 the water level information in which the acquisition time of each child device 20 installed in the determined area of the predetermined range is closest to the current time. In step S82, the CPU 71 acquires the coordinates of each child device 20 in the detected area from the sensor coordinate DB 51, and displays the water level of each child device 20 as a height at the coordinate position of each child device 20. Is set and set as display information. Next, in step S83, the CPU 71 acquires the evacuation center and underpass coordinates of the detected area from the evacuation information DB (not shown) provided in the database unit 12c, and places the evacuation center and underpass icons at each coordinate position. Set the displayed information. Next, in step S84, the CPU 71 creates display information of the flood condition from the set display information. When the process of step S84 is completed, the flood condition creation process is terminated, and the process returns to step S73 of the flood condition request process.
It is preferable that the road traffic information providing center 15 requests the information providing unit 12 to acquire the flood condition at predetermined time intervals, for example, every minute. In addition, when there are a plurality of flooded areas, display information on the flooding status is created for each area. That is, when there are a plurality of points where the submergence has occurred over a certain predetermined area (installation position of the slave unit 20), a new predetermined area including the point where the submergence occurs is determined, The display information on the flooding situation described above is newly created as display information on the flooding situation in the predetermined area.

Next, a flowchart of traffic information distribution processing executed at the road traffic information providing center 15 is shown in FIG. The traffic information distribution process shown in FIG. 15 is always executed as long as the road traffic information providing center 15 is powered on. The road traffic information providing center 15 can be a VICS center. The road traffic information providing center 15 includes a processing device (CPU), and various operations of the road traffic information providing center 15 are realized by executing a control program stored in the processing device.
When the traffic information distribution process is activated, in step S50, the processing apparatus determines whether or not the display information on the flooding situation has been distributed from the information providing unit 12. Here, when the submergence status display information is not distributed (NO), the process waits, and when it is determined that the submergence status display information is distributed (YES), the process proceeds to step S51. In step S51, the processing device detects an area of display information on the delivered flooding situation. Next, in step S52, the processing apparatus transmits traffic information including display information on the flooding situation only in the area. When the process of step S52 is completed, the process returns to step S50, and the processes of step S50 to step S52 are repeated. In this case, since the flood information display information is created for each area, if there are multiple flood information display information for each area, the corresponding flood information display information for each area is only in that area. Sent. The traffic information includes traffic regulation information such as traffic closure, speed regulation, oblique line regulation, and traffic obstacle information such as accidents, broken cars, road obstacles, construction, and work. Acquisition of these traffic information is omitted in the flowchart of traffic information distribution processing. This traffic regulation information is transmitted to the vehicle on the road in real time using FM multiplex broadcasting or a beacon, and is received by the road traffic information receiver 10a included in the car navigation system 10b mounted on the vehicle. The road traffic information receiver 10a can be a VICS receiver.

FIG. 16 shows a flowchart of traffic information display processing executed by a car navigation system 10b mounted on a vehicle equipped with a road traffic information receiver 10a. The traffic information display process shown in FIG. 16 starts when the car navigation system 10b is powered on. The car navigation system 10b includes a processing device (CPU), and various operations of the car navigation system 10b are realized by executing a control program stored in the processing device.
When the traffic information display process is activated, in step S60, the processing device determines whether the traffic information is received by the road traffic information receiver 10a. Here, when traffic information is not received (NO), it waits, and when it is judged that traffic information was received (YES), it progresses to step S61. In step S61, the processing apparatus displays the traffic information including the received display information of the flooding situation on the map on which the vehicle displayed on the display of the car navigation system 10b is traveling. When the process of step S61 ends, the process returns to step S60, and the processes of step S60 to step S61 are repeated. In addition, when the road traffic information receiver 10a mounted on the vehicle within a certain area receives the traffic information, the area of the map showing the traveling position of the vehicle displayed on the display of the car navigation system 10b is This corresponds to the display information area of the flooding status included in the received traffic information. Thereby, the icon which shows the water level in the display information of a flooding condition by height comes to be overlaid on the coordinate position of the map currently displayed on the display of the car navigation system 10b.
As a result, the driver of the vehicle can grasp the road surface condition of the surrounding road and the flooded place in advance by looking at the display of the car navigation system, and can prevent submergence and hydroplaning.
In addition, the process which displays the map which the vehicle is drive | working on the display of the car navigation system 10b is omitted in the flowchart of a traffic information display process.

In the vehicle warning system according to the embodiment of the present invention, when the flooding status acquisition request is made, the flooding status display information is created and distributed to the requesting road traffic information providing center. When the information providing unit acquires the water level information detected by the information provider, if it is detected that flooding has occurred, display information on the inundation status for each area is created and stored in the database unit. In such a case, the display information of the flood condition for each area may be read from the database unit and distributed.
Moreover, in the subunit | mobile_unit provided with the position positioning apparatus in the vehicle warning system concerning the Example of this invention demonstrated above, not only GPS but the position positioning apparatus is GLONASS, Galileo, a quasi-zenith satellite. Positioning may be performed using a satellite positioning system such as (QZSS).
Furthermore, the icon indicating the water level is the display information of the second layer, the shape is cylindrical, and the water level is indicated by the height of the cylindrical icon, but the icon figure is a figure indicating the water level. Any shape is acceptable. In addition, if there is a risk that the flooded road and the road adjacent to the flooded area may become dangerous due to flooding, an icon that overlaps the flooded road and the road adjacent to the flooded spot will be displayed. It may be displayed that traffic is dangerous due to flooding by a figure or the like.

DESCRIPTION OF SYMBOLS 1 Vehicle warning system, 2 Sensing part, 10 Vehicle, 10a Road traffic information receiver, 10b Car navigation system, 11 Communication network, 12 Information provision part, 12a Information distribution server, 12b Data processing server, 12c Database part, 12d Wide area communication Network communication I / F, 13 Wide area communication network, 14a-14m Closed communication network, 15 Road traffic information provision center, 20 Slave unit, 20a Pole part, 20b Base part, 21 Microcontroller, 22 Sensor, 23 Positioning device, 24 Warning Display, 25 Closed network communication I / F, 26 Power supply, 30 Base unit, 31 Microcontroller, 32 Wide area network communication I / F, 33 Closed network communication I / F, 34 Power supply, 41 CPU, 42 ROM, 43 RAM, 44 I / O, 45 bus, 50 Data processing device, 51 Sensor coordinate DB, 52 Sensor information DB, 53 Evacuation information DB, 54 Map information DB, 55 Registrant information DB, 61 CPU, 62 ROM, 63 RAM, 64 I / O, 65 bus, 71 CPU, 72 ROM, 73 RAM, 74 I / O, 75 bus, a1 to m1 parent device, a2 to ai child device, b2 to bj child device, m2 to mk child device

Claims (4)

It has at least a water level sensor, sends coordinate information of the installed point, and water level information including the acquired water level and the acquired time when the water level detected by the water level sensor becomes a significant water level. A plurality of slave units to send out,
A plurality of master units having a communication area within a predetermined range, receiving the coordinate information and the water level information transmitted from the plurality of slave units installed in the communication area, and transmitting the information to the information providing unit; ,
The coordinate information and the water level information transmitted from the plurality of master units are received, and display information of a flood condition is generated in which an icon indicating a water level corresponding to the water level information is displayed at the position of the coordinate information. An information provider,
A road traffic information providing center for providing road traffic information to a vehicle car navigation system;
The road traffic information providing center requests the information providing unit to display the flood status information, and transmits the flood information display information distributed from the information providing unit to the car navigation system of the vehicle together with the road traffic information. A vehicle warning system characterized by that.   The display information of the flooding situation is display information of the flooding situation corresponding to a predetermined area, and the road traffic information providing center transmits the display information of the flooding situation corresponding to the predetermined area. The vehicle warning system according to claim 1.   When the inundation status display information transmitted from the road traffic information providing center is received together with the road traffic information in the car navigation system for vehicles in the predetermined area, it is displayed on the display of the car navigation system. The icon indicating the water level in the display information of the flooding status is displayed on the map, and the icon is displayed at the coordinate position of the point where the slave unit where the corresponding water level was acquired is installed. The vehicle warning system according to claim 2.   The slave unit is provided with a warning indicator, and in the slave unit in which the detected water level in the slave unit exceeds a specified water level, a warning display indicating the water level flooded by the warning indicator is performed. The vehicle warning system according to any one of claims 1 to 3.

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