JP7313031B2 - In-vehicle information terminal - Google Patents

Description

The present invention relates to an in-vehicle information terminal.

Conventionally, various services using position information based on signals from GPS (Global Positioning System) satellites have been put into practical use. In addition to systems using GPS satellites, there is known a Japanese quasi-zenith orbit satellite system "MICHIBIKI" which is composed mainly of satellites in quasi-zenith orbits. MICHIBIKI can use GPS satellites as part of its system, and by using both quasi-zenith orbit satellites and GPS satellites, it is possible to perform stable and highly accurate positioning. Receivers compatible with "Michibiki" can be procured at relatively low cost, so we can expect the development of location information business that makes advanced use of geospatial information.

Receivers compatible with MICHIBIKI can receive not only positioning information but also information such as emergency calls for earthquakes, tsunamis, floods, large-scale disasters, etc. issued by government agencies responsible for disaster risk management, crisis management information such as terrorism, and information such as evacuation advisories, etc. By receiving disaster alerts from MICHIBIKI, the location where the receiver is installed can be notified of the occurrence of disasters and crises as soon as possible.

Disaster reporting from "Michibiki" is expected to be a tool for prompt evacuation in the event of a disaster. When a receiver compatible with "Michibiki" is installed in a vehicle, instead of installing a dedicated receiver, an in-vehicle information terminal that has other functions such as navigation is given a function to receive disaster warnings from "Michibiki", and an attempt is being made to display emergency early warnings using the display of the in-vehicle information terminal.

JP 2014-147017 A

The disaster notification includes a plurality of pieces of information such as the type of disaster that has occurred, the warning level of the disaster, and the place of occurrence. In addition, the situation of receiving a disaster warning, that is, the situation that there is a possibility that danger is imminent, gives the user high stress and lowers his ability to make decisions. For this reason, even when the information is displayed on a receiver dedicated to MICHIBIKI, it is difficult to grasp multiple pieces of information and accurately grasp the content in situations where a high degree of tension is forced. In addition, when a disaster report is displayed on the display of an in-vehicle information terminal that is normally used for other purposes, information not intended by the user is suddenly displayed, making it difficult for the user to accurately grasp the content of the disaster report.

On the other hand, when a disaster warning is received and the user is driving a vehicle, it is very important to know the location where the disaster occurred and the location or area targeted for emergency notification or evacuation advisory. Therefore, when a disaster report is received, it is required to inform the user in an easy-to-understand manner of the place where the disaster or crisis occurred or the place where the disaster report is issued (hereinafter referred to as the disaster target area).

The present invention has been proposed to solve the problems of the prior art as described above, and its object is to provide an in-vehicle information terminal that notifies the user of the place where a disaster or crisis has occurred based on the vehicle position when a disaster warning is received.

In order to achieve the above object, the in-vehicle information terminal of the present invention is an in-vehicle information terminal mounted in a vehicle, comprising a display unit for displaying the current position of the vehicle and the traveling direction of the vehicle, comprising: a satellite radio reception unit for receiving radio signals from satellites; a vehicle position measurement unit for measuring the position of the vehicle based on the radio signals; and a notification unit that displays disaster occurrence information in a predetermined area of the.

A disaster azimuth calculation section may be further provided for calculating a azimuth of the disaster hazard area based on the position of the vehicle from the vehicle position and the disaster hazard area information, the display section may have a hazard azimuth notification area provided at an edge of a display portion for displaying information, and the notification section may display the disaster occurrence information in a predetermined area within the hazard azimuth notification area corresponding to the azimuth of the disaster hazard area.

The disaster direction calculation unit uses a predetermined number of directions for the disaster target area to be calculated, and the same number of predetermined regions as the number of directions calculated by the disaster direction calculation unit is arranged in the disaster direction information region. Information may be displayed.

The disaster azimuth calculation unit may calculate the azimuths of the disaster target area as eight azimuths of east, west, south and north, and northeast, northwest, southeast and southwest, and eight predetermined areas may be provided in the disaster azimuth notification area.

A urgency determination unit that determines the urgency of the received disaster report, and a disaster report information determination unit that determines the display of the disaster occurrence information based on the urgency, and when the urgency is equal to or greater than a threshold value, the disaster occurrence information may be displayed in a predetermined area of the display unit.

a disaster map generation unit that generates disaster map data including the position of the vehicle and the disaster target area; a urgency determination unit that determines the urgency of the received disaster report; an interruption determination unit that determines whether to interrupt display of the disaster map on the display unit based on the urgency; It is good as

The map data may be divided into areas, and the predetermined area may be an area including the disaster risk area.

According to the present invention, it is possible to provide an in-vehicle information terminal that informs a user of a place where a disaster or crisis has occurred based on the vehicle position when receiving a disaster report.

1 is a perspective view showing an in-vehicle information terminal according to a first embodiment; FIG. 1 is a front view of an in-vehicle information terminal according to a first embodiment; FIG. 2 is a hardware block diagram of the onboard information terminal of the first embodiment; FIG. 1 is a functional block diagram of an in-vehicle information terminal according to a first embodiment; FIG. 4 is a flow chart showing a procedure for notifying a disaster occurrence direction in the vehicle-mounted information terminal of the first embodiment; FIG. 10 is a diagram showing an example of a display screen of an in-vehicle information terminal reporting a disaster occurrence direction; FIG. 4 is a hardware block diagram of an onboard information terminal according to a second embodiment; FIG. 9 is a flow chart showing a procedure for informing a disaster occurrence area in the vehicle-mounted information terminal of the second embodiment; FIG. 4 is a diagram of an in-vehicle information terminal reporting a disaster target area on a disaster map;

[1. First Embodiment]
[1-1. Outline]
A first embodiment for carrying out the present invention will be described with reference to the drawings.

The vehicle-mounted information terminal 100 in this embodiment has a display unit, and has a function of displaying the position of the vehicle on a map displayed on the display unit in the normal operation mode in which no disaster report is received. As the in-vehicle information terminal 100, there are the following (1) to (5).
(1) A drive recorder that records images inside and outside the vehicle (2) A navigation system that provides route guidance to a destination using location information and map information from GPS (3) A radar detector that has a function to issue warnings and encourages adherence to the speed limit of vehicles and other vehicles (4) An in-vehicle information terminal for a non-stop automatic toll collection system that can pass through a toll gate without stopping when using a toll road

In addition, the vehicle information terminal 100 is not limited to these, and includes various devices mounted on a vehicle, as long as it has a function of measuring the position of the vehicle based on radio signals from satellites, a function of receiving disaster reports including disaster occurrence locations, and a display unit for notifying the user of information. In the following, an example in which the in-vehicle information terminal 100 is a radar detector will be described.

[1-2. Configuration of in-vehicle information terminal]
An external configuration of the in-vehicle information terminal 100 will be described. The in-vehicle information terminal 100 has a main body 101, a bracket 102, a display 103, and a lamp 104, as shown in FIGS.

The main body 101 is a substantially rectangular parallelepiped housing. The bracket 102 is a member that attaches the main body 101 to the vehicle. The bracket 102 has a pedestal 102a, a support portion 102b, and an attachment portion 102c. The pedestal 102a is fixed on the dashboard, and the support portion 102b extends upward from the pedestal 102a. The support portion 102b is rotatable with respect to the pedestal 102a, and by changing the angle of the support portion 102b, it is possible to change the angle of the main body 101 with respect to the dashboard. A mounting portion 102c for mounting the main body 101 is provided at the tip of the support portion 102b. The main body 101 is detachably fixed to the mounting portion 102c. As a power supply for the in-vehicle information terminal 100, an in-vehicle battery mounted in the vehicle is used. For example, the in-vehicle device 100 may be connected to the in-vehicle battery via an OBD-II adapter or a cigarette lighter socket, or a direct wire from the in-vehicle device 100 may be connected to the in-vehicle battery.

FIG. 2 is a front view showing the display 103 in this embodiment. Here, the front is the surface facing the user when installed in the vehicle. The display 103 corresponds to the display section in the present invention. The display 103 is provided on the front side of the main body 101 and is a display device such as liquid crystal for displaying various information. In the normal operation mode, the display 103 displays the vehicle position on the map displayed on the display unit. However, the display of the vehicle position need not always be displayed, and the vehicle position may be displayed on the displayed map when the user selects a setting for displaying a map on the display unit (hereinafter referred to as a map mode). In the map mode, the display 103 displays information such as guidance information and warnings in a predetermined layout. Also, the setting screen of the in-vehicle information terminal 100 may be displayed by switching the screen from the map mode. In the map mode, the edge of the display 103 has a disaster direction notification area A. When a disaster notification is received, the disaster occurrence information is displayed in the disaster direction notification area A.

The lamp 104 is a member that displays various information by emitting light. The lamp 104 is an output device that notifies the user of specific information by continuously emitting light, extinguishing, blinking, or the like. An LED is used as the lamp 104 . The lamp 104 can, for example, emit light to indicate power-on, warning, or the like.

[1-3. Internal configuration]
Next, the internal hardware configuration of the in-vehicle information terminal 100 will be described with reference to the block diagram of FIG. In addition to the display 103 and lamp 104 described above, the vehicle information terminal 100 includes a satellite radio wave receiver 111, a disaster warning receiver 112, a clock 113, an acceleration sensor 114, an atmospheric pressure sensor 115, a gyro sensor 116, a speaker 117, a memory card interface 118, and a controller 121.

The satellite radio wave receiving unit 111 receives radio waves from GPS satellites and "MICHIBIKI" satellites, calculates the latitude and longitude of the location where the radio waves are received, and outputs the coordinates of the vehicle position. Note that the satellite radio wave receiving unit 111 may output the position coordinates of the own vehicle by receiving radio waves from satellites other than the GPS satellite and the "Michibiki" satellite.

The disaster notification receiving unit 112 receives a disaster notification transmitted from, for example, the Japanese quasi-zenith satellite system "MICHIBIKI". Disaster alerts are sent from the MICHIBIKI control station via quasi-zenith satellites, and include emergency alerts for earthquakes, tsunamis, floods, or large-scale disasters, crisis management information such as terrorism, and announcement information such as evacuation advisories. In addition, the disaster report includes information indicating the disaster target area for which the issue information is issued (for example, the name of prefecture, XX region, △△ coast, municipality, etc.), and the latitude and longitude of the disaster target area. Hereinafter, for the sake of explanation, it is assumed that the disaster report is an emergency report regarding an earthquake, and the disaster report includes the position coordinates of the estimated epicenter. Receipt of disaster reports is not limited to disaster reports transmitted via the quasi-zenith satellites of MICHIBIKI. For example, the disaster report receiving unit 112 may receive a disaster report transmitted from a mobile phone base station, or may receive a disaster report distributed by a road traffic information and communication system.

The clock 113 is a device that measures and outputs the date and time. The clock 113 may calculate the time from the signal received by the satellite radio wave receiving section 111 . Also, the time can be associated with the position information and speed information of the vehicle and saved as a travel log.

The acceleration sensor 114 is a sensor that detects the acceleration of the in-vehicle information terminal 100 or an installation target. The acceleration sensor 114 of this embodiment uses a 3G sensor that detects acceleration in three axial directions of the x-axis, the y-axis, and the z-axis.

The atmospheric pressure sensor 115 is a sensor for detecting the atmospheric pressure applied to the in-vehicle information terminal 100 . The in-vehicle information terminal 100 is used to accurately interpolate the position of the vehicle in the GPS unmeasured state. As the atmospheric pressure sensor 115, a pressure sensor using a piezoresistive effect can be used.

The gyro sensor 116 is a sensor that detects the angular velocity of the in-vehicle device 100 or an installation target, and is used to highly accurately complement the position of the vehicle in the GPS unmeasured state. The speaker 117 is an output device that notifies the user of specific information by voice. The memory card accommodation unit 118a is a recording medium accommodation unit that accommodates a portable storage medium such as a memory card. The memory card interface 118 is an interface for writing data to and reading data from the memory card accommodated in the memory card accommodating portion 118a, formatting the memory card, and the like.

The control unit 121 controls the operation of each unit of the in-vehicle information terminal 100 . The control unit 121 is a so-called computer mainly composed of a processor, which is a central processing unit, and equipped with various memories, input/output interfaces, and the like. The processor performs arithmetic processing for information input, storage, output, etc. and control processing for peripheral devices according to the main program.

The memory includes flash memory, EEPROM, and RAM. The flash memory is a writable nonvolatile memory that stores programs, data, and settings for performing various processes for the processor to control each unit. The memory stores map data and various facility data such as buildings, shopping malls, stations, schools, roads, and parks. The RAM is memory that functions as a work area or the like when the processor performs processing. The input/output interface converts information input/output between the processor and the outside.

Furthermore, the vehicle information terminal 100 is provided with a signal port 119 and a communication section 120 . The signal port 119 is a vehicle information acquisition unit that acquires various kinds of information for the self-diagnostic function of the ECU of the vehicle, such as OBD-II. The signal port 119 is connected to, for example, the vehicle's OBD-II connector via an adapter cable. Various kinds of information for the self-diagnostic function of the ECU are processed by CAN processing within the adapter and transmitted from the UART (serial) communication port within the adapter to the signal port 119 . Various types of information for the self-diagnostic function of the ECU may be transmitted to the vehicle-mounted information terminal 100 using a communication protocol other than the CAN communication protocol or a communication method other than the UART communication.

The communication unit 120 is a processing unit that transmits and receives information to and from the outside. The communication unit 120 is, for example, a communication module connected to a network via an information communication terminal by tethering using Wi-Fi (registered trademark), Bluetooth (registered trademark), USB, or the like. As the communication unit 120, for example, it is possible to use a communication module that can be connected to a network without using an information communication terminal by having a connection function with a base station according to communication standards such as 3G and 4G.

[1-4. Each processing unit of the control unit]
The control unit 121 functions as various processing units by the processor reading and executing various programs, data, and various settings stored in the memory. In the following description, functional block diagrams showing functions of respective processing units by blocks are used.

When receiving a disaster report accompanying the occurrence of an earthquake, the control unit 121 extracts the coordinates of the epicenter of the earthquake targeted for the disaster report from the disaster report. Then, the azimuth of the epicenter with respect to the position of the vehicle is calculated from the calculated coordinates and the coordinates of the own vehicle position. Then, based on the calculated azimuth of the epicenter and the traveling direction of the vehicle, the azimuth of the epicenter is displayed on the display. As shown in FIG. 4 , the control unit 121 includes a disaster occurrence coordinate extraction unit 20 , a disaster direction calculation unit 21 , a notification area designation unit 22 and a notification unit 23 .

The disaster occurrence coordinate extraction unit 20 extracts the coordinates of the epicenter contained in the disaster notification received by the disaster notification reception unit 112 .

The disaster azimuth calculation unit 21 calculates the azimuth of the epicenter based on the position coordinates of the vehicle from the position coordinates of the vehicle output by the satellite radio wave reception unit 111 and the coordinates of the epicenter extracted by the disaster occurrence coordinate extraction unit 20 . The position coordinates of the own vehicle and the coordinates of the epicenter are represented by coordinates based on latitude and longitude. Therefore, the disaster azimuth calculation unit 21 defines a line extending due north from the position coordinates of the vehicle as a reference line L1, a line segment connecting the position coordinates of the vehicle and the coordinates of the epicenter as a line segment L2, and calculates the angle at which the line segment L2 and the reference line L1 intersect, thereby calculating the azimuth of the epicenter based on the position coordinates of the vehicle. The azimuth of the epicenter based on the position coordinates of the own vehicle is calculated by approximating eight azimuths consisting of east, west, south, north, northeast, northwest, southeast and southwest. Here, it is assumed that the disaster direction calculator 21 calculates the direction of the epicenter as "northeast".

The notification area designating unit 22 designates the disaster direction notification area A of the display based on the traveling direction of the vehicle displayed on the display and the azimuth of the epicenter based on the calculated positional coordinates of the own vehicle. Here, it is assumed that the traveling direction of the vehicle displayed on the display is set to always face the top of the display, that is, so-called "heads up". Moreover, the disaster direction reporting area A is divided into eight divided areas B1 _{to B8, which} are vertically, horizontally, and obliquely.

The notification area specifying unit 22 receives information on the traveling direction of the vehicle at regular intervals. The direction of travel of the vehicle may be estimated from the log of the position coordinates of the vehicle output by the satellite radio wave reception unit 111 . The notification area specifying unit 22 calculates the relative direction of the epicenter with respect to the vehicle from the information on the traveling direction of the vehicle and the direction of the epicenter with the position coordinates of the own vehicle as the reference. For example, when the traveling direction of the vehicle is "north" and the azimuth of the epicenter with respect to the vehicle is "northeast", the relative azimuth of the epicenter with respect to the vehicle is 45 degrees diagonally to the right and forward of the vehicle. Further, when the traveling direction of the vehicle is "south" and the azimuth of the epicenter with respect to the vehicle is "northeast", the relative azimuth of the epicenter with respect to the vehicle is 45 degrees diagonally to the rear left of the vehicle.

Then, the notification area designating unit 22 designates the disaster direction notification area A of the display 103 based on the traveling direction of the vehicle displayed on the display and the relative direction of the epicenter with respect to the vehicle. That is, when the traveling direction of the vehicle is ``north'' and the azimuth of the epicenter with respect to the vehicle is ``northeast'', the divided area B positioned at 45° diagonally to the right and forward of the vehicle displayed on the display is specified. For example, the divided area is _B2 .

The notification unit 23 outputs a notification instruction signal for displaying the disaster occurrence information in the divided area _B2 designated by the notification area designation unit 22 . The display that has received the notification instruction signal displays the disaster occurrence information in the divided area _B2 indicated by the notification instruction signal. The disaster occurrence information may be displayed by displaying an icon corresponding to the type of disaster, or by lighting or blinking part or all of the divided area.

[1-5. action]
The operation of the in-vehicle information terminal 100 of this embodiment having the configuration as described above will be described. FIG. 5 is a flow chart showing the procedure for notifying the user of the disaster occurrence location in the vehicle-mounted information terminal 100 according to the present embodiment.

First, the user supplies power to the in-vehicle information terminal 100 by, for example, starting the engine of the vehicle. In the vehicle-mounted information terminal 100 to which power is supplied, the satellite radio wave receiving unit 111 receives signals from radio waves from GPS satellites and "MICHIBIKI" satellites, and measures the position of the vehicle (S11). Power supply to the in-vehicle information terminal 100 may be performed not only by starting the engine but also by turning on the ACC (accessory) power supply.

After measuring the position of the vehicle, when the disaster report receiving unit 112 receives the disaster report accompanying the occurrence of an earthquake transmitted from "MICHIBIKI" (YES in S12), the disaster occurrence coordinate extraction unit 20 extracts the epicenter coordinate data included in the disaster report (S13).

Then, the disaster azimuth calculation unit 21 calculates the estimated azimuth of the epicenter based on the vehicle position as "northeast" from the position coordinates of the vehicle and the position coordinates of the estimated epicenter (S14).

In addition, the notification area designating unit 22 designates the notification area based on the current traveling direction of the vehicle "north" and the azimuth "northeast" of the epicenter estimated based on the vehicle position (S15). When the traveling direction of the vehicle is "north" and the azimuth of the epicenter with respect to the vehicle is "northeast", the relative azimuth of the epicenter with respect to the vehicle is 45 degrees diagonally to the right and forward of the vehicle. The notification area designating unit 22 designates a divided area _B2 within the disaster azimuth notification area A, which is displayed on the display and indicates an oblique 45° forward right direction of the vehicle.

Then, the notification section 23 outputs a notification instruction signal for lighting the divided area B2 designated by the notification area designation section ₂₂ in red (S16). On the other hand, if the disaster report is not received (NO in S12), the process returns to S12 and waits until the disaster report is received. FIG. 6 is a diagram showing an example of the display screen of the display of this embodiment. In FIG. 6, the map displayed on display 103 shows a vehicle traveling north. This map and vehicle display are also displayed on a drive recorder that has not received a disaster report. When the disaster warning is received, the divided area _B2 in the disaster direction notification area A indicating the 45° forward right oblique direction of the vehicle traveling northward on the map lights up. The 45° forward right diagonal of the vehicle heading north matches the estimated direction of the epicenter.

[1-6. effect]
(1) When the in-vehicle information terminal 100 of the present embodiment as described above receives a disaster report including information about a disaster target area, it displays disaster occurrence information in divided areas B _{1 to 8} within the disaster direction reporting area A provided at the edge of the display based on the position of the vehicle and the disaster target area. This allows the user to grasp the direction in which the disaster occurred while checking the normal display screen displayed on the display. Therefore, it is possible to realize the in-vehicle information terminal 100 that allows the user to easily grasp the direction of the disaster target area when receiving information with a high degree of urgency.

In addition, in this embodiment, after the azimuth of the epicenter estimated based on the vehicle position is calculated by the disaster azimuth calculation unit 21, the notification area designation unit 22 instantaneously displays the disaster occurrence information in the divided areas B _{1 to 8} of the disaster azimuth notification area A. Therefore, almost in real time after receiving the disaster warning, it is possible to inform the user of the direction of the disaster target area that matches the current traveling direction of the vehicle and that the user can easily grasp. Furthermore, in the notification region designating unit 22, the traveling direction of the vehicle displayed on the display 103 may be obtained at predetermined intervals. In this case, the notification area designating unit 22 designates the divided areas B1 _{to B8} for displaying the disaster occurrence information based on the traveling direction of the vehicle acquired at predetermined intervals. By acquiring the traveling direction of the vehicle in a short cycle, even if the traveling direction of the vehicle changes such as when the vehicle travels on a curve, the direction of the disaster target area can be notified according to the changing traveling direction.

In the embodiment, the disaster report is an emergency report regarding an earthquake, and the disaster report includes the estimated location coordinates of the epicenter. In the case of emergency reports such as tsunamis other than earthquakes, floods, or large-scale disasters, crisis management information such as terrorism, and announcement information such as evacuation advisories, etc., disaster reports may include information indicating the target area of the announcement information instead of the coordinates of the place of occurrence. In that case, it is stored in memory in advance in association with the position coordinates representing the name of the area that may become the disaster target area. Then, when an area name is received as the information of the disaster target area, the memory may be referred to, and the position coordinates representing the area may be called from the area name. For example, when information indicating ○○ prefecture is received as an area to be issued information, the memory can be referred to, representative coordinates representing ○○ prefecture can be called, and the representative coordinates can be used.

(2) In the present embodiment, one of the eight divided areas B1 _{to B8} within the disaster direction notification area A is designated from the traveling direction of the vehicle and the direction of the disaster target area displayed on the display. As a result, it is possible to realize the in-vehicle information terminal 100 that allows the user to easily grasp the direction of the disaster target area regardless of whether the display setting of the map displayed on the display is north-up or heads-up.

(3) In addition, the disaster occurrence location notification area is divided into eight. When a disaster occurs, it is necessary to know the approximate direction and act promptly. By setting the disaster occurrence place in eight directions, the user can intuitively grasp the disaster occurrence place, which can be used as an aid for instantaneous judgment. Also, the disaster occurrence location notification area may be divided into more than eight divisions. For example, 4 azimuths, 16 azimuths, or 32 azimuths may be used.

(4) Further, the control unit may include a urgency determination unit that determines the urgency of the received disaster notification, and a disaster notification notification determination unit that determines whether or not the disaster direction notification area A is lit or blinked based on the determined urgency. In the case of a disaster report associated with an earthquake, the degree of urgency is determined based on "magnitude/depth of the epicenter", "position of the hypocenter estimated to be the position of the vehicle", and "time of occurrence of the earthquake". For example, when the degree of urgency exceeds a certain level, the disaster notification notification determination unit determines that the disaster notification area A should be lit or blinked. Thus, only when a disaster report with a high degree of urgency is received, it is possible to inform the user of the information on the disaster target area. Since the user does not need to select information to be notified, it becomes easier for the user to grasp the notified disaster warning.

[2. Second Embodiment]
[2-1. composition]
A second embodiment for carrying out the present invention will be described with reference to the drawings. In this embodiment, when a disaster report is issued, a disaster map including the vehicle position and the disaster target area is displayed by interruption on the display, and the disaster occurrence information is displayed in the disaster target area on the disaster map that is interrupted. In the first embodiment, only the direction of the disaster target area was notified, but in this embodiment, the vehicle position and the disaster target area can be grasped on the map. In the following, it is assumed that the disaster danger report is "tornado warning information" in the disaster type "weather", and that "tornado warning information" has been issued to ○○ city and △△ city.

[Each processing part of the control part]
The control unit 121 includes a disaster target area extraction unit 31, a map data creation unit 32, an interrupt determination unit 33, and a notification unit 34, as shown in FIG.

The disaster target area extracting unit 31 detects an area where a disaster has occurred from the received disaster notification. The disaster target area extraction unit 31 extracts information indicating ○○ city and △△ city as target areas.

The map data creation unit 32 creates disaster map data including the position of the vehicle and the disaster target area. For example, when the location of the vehicle is X city, disaster risk map data including X city where the vehicle is located and XX city and △△ city, which are the disaster target areas, are created. When creating map data, the map data creating unit 32 creates disaster map data by accessing the memory and referring to the map data stored in the memory.

The interrupt determination unit 33 determines the degree of urgency of the received disaster notification, and determines whether or not to display the disaster map on the display 103 by interruption based on the determined degree of urgency. For example, the degree of urgency is classified into levels of 1-10. The classified urgency levels are defined such that the higher the numerical value, the higher the urgency level. When an emergency report associated with the occurrence of a tornado is received as disaster risk information, the degree of urgency is determined based on the "distance between the position of the vehicle and the disaster target area" and the "time of occurrence of the tornado". For example, when the distance between the vehicle position and the area where the tornado warning is issued is 30 km or less, the interrupt determination unit 33 determines that the urgency level is "6" or higher, and that an interrupt display is performed.

The notification unit 34 instructs the notification unit 34 to display the disaster map data upon receiving the decision to perform the interrupt display. The notification unit 34 switches the display contents displayed by the radar detector that has not received the disaster notification, and displays the disaster map based on the disaster map data. In addition, the notification unit 34 displays the disaster occurrence information for the area C indicating the XX city and the △△ city, which are the disaster target areas in the disaster map displayed on the display. The disaster occurrence information may be displayed by displaying an icon corresponding to the type of disaster, or by lighting or blinking part or all of the divided area.

[2-2. action]
In this embodiment as well, the vehicle position is measured (S21) in the same manner as in the first embodiment. After measuring the position of the vehicle, if a disaster report is received (YES in S22), information indicating the disaster target areas XX city and △△ city included in the disaster report is extracted (S23).

Then, a disaster risk map is created from the position coordinates of the vehicle position and the information indicating ○○ city and △△ city (S24). If the location of the vehicle is X city and the disaster risk target area is ○○ city and △△ city, a disaster risk map including X city, ○○ city and △△ city is created. Then, based on the urgency level of the received disaster report, an interrupt determination is made (S25), and if the urgency level is equal to or greater than a certain value (YES in S25), it is determined to perform an interrupt display, and a disaster map is displayed on the display 103. On the disaster map, area C indicating the disaster target area is displayed together with the vehicle position (S26).

FIG. 9 is a diagram of an in-vehicle information terminal displaying a disaster occurrence display for a disaster target area. In FIG. 9, the disaster map on the display 103 is delineated for each area. On the disaster map, areas indicating XX city and △△ city, which are the disaster target areas, are lit in red. In addition, on the disaster map, the position of the vehicle indicated by ▴ is displayed.

On the other hand, if the disaster report is not received (NO in S22) or if the result of the interrupt determination is that the degree of urgency is less than a certain value (NO in S25), the process returns to S22 and waits until the disaster report is received.

[2-3. effect]
The in-vehicle information terminal 100 of the present embodiment as described above notifies the user of the disaster target area by displaying a disaster map including the position of the own vehicle and the disaster target area on the display when receiving the disaster report. Since the disaster target area is highlighted on the disaster map, the user can easily grasp the target area of the disaster report. In addition, by displaying the disaster occurrence information on the disaster map, the contents of the disaster report and the disaster target area are notified to the user. Therefore, it is possible to realize the vehicle-mounted information terminal 100 that allows the user to easily grasp the disaster target area when receiving information with a high degree of urgency.

[3. Other embodiments]
The invention is not limited to the embodiments described above, but encompasses other embodiments. In addition, the present invention also includes forms in which all or any of the above embodiments are combined. Furthermore, various omissions, replacements, and modifications can be made to these embodiments without departing from the scope of the invention, and the modifications are also included in the present invention.

For example, in the case of the normal operation mode, the on-vehicle information terminal 100 has a function of displaying the position of the vehicle on the map displayed on the display unit. For example, along with a map showing the position of the vehicle, the azimuth in the traveling direction of the vehicle, the speed of the vehicle, the number of revolutions of the engine, the air pressure of the tires, the image of the camera connected to the onboard information terminal 100, and the like may be displayed.

DESCRIPTION OF SYMBOLS 100... In-vehicle information terminal 101...Main body 102...Bracket 102a...Pedestal 102b...Supporting part 102c...Mounting part 103...Display 104...Lamp 111...Satellite radio wave receiving part 112...Emergency notification receiving part 113...Clock 114...Acceleration sensor 115...Barometric pressure sensor 116...Gyroscope sensor 117...Speaker 118...Memory card interface 118a...Memory card accommodating part 119...Signal port 120...Communication Part 121... Control part 20... Disaster occurrence coordinate extraction part 21... Disaster direction calculation part 22... Notification area designation part 23... Notification part 31... Disaster target area extraction part 32... Map data creation part 33... Interrupt determination part 34... Notification part

Claims (5)

An in-vehicle information terminal that is mounted on a vehicle and has a display unit that displays the current position of the vehicle and the traveling direction of the vehicle,
a satellite radio wave receiving unit for receiving a radio signal from a satellite;
a vehicle position measurement unit that measures the position of the vehicle based on the radio signal;
a disaster report receiving unit that receives disaster reports related to disasters and crises that have occurred;
a notification unit that displays disaster occurrence information in a predetermined area of the display unit based on the location of the vehicle and the disaster target area information included in the disaster notification;
a disaster azimuth calculation unit that calculates the azimuth of the disaster hazard area based on the position of the vehicle from the position of the vehicle and the hazard area information;
a notification region designating unit that designates at least one predetermined region based on the traveling direction of the vehicle displayed on the display unit and the orientation of the disaster target area;
with
The display unit has a disaster direction notification area provided at the edge of the display area for displaying information,
The reporting unit displays disaster occurrence information in a predetermined region within the disaster direction reporting region corresponding to the direction of the disaster target area,
The disaster azimuth calculation unit sets the azimuth of the disaster target area to be calculated to a predetermined number,
In the disaster direction notification area, the same number of predetermined regions as the number of directions calculated by the disaster direction calculation unit are arranged,
The in-vehicle information terminal, wherein the notification unit displays the disaster/crisis occurrence information in a predetermined area designated by the notification area designation unit . The disaster direction calculation unit sets the directions of the disaster target area to be calculated to eight directions of east, west, south and north, and northeast, northwest, southeast and southwest,
2. The in-vehicle information terminal according to claim 1 , wherein eight predetermined areas are provided in said disaster direction reporting area. an urgency determination unit that determines the urgency of the received disaster report;
a disaster report notification determination unit that determines display of the disaster occurrence information based on the degree of urgency;
with
3. The in-vehicle information terminal according to claim 1 , wherein when the degree of urgency is greater than or equal to a threshold value, information on the occurrence of disaster or danger is displayed in a predetermined area of the display unit. An in-vehicle information terminal that is mounted on a vehicle and has a display unit that displays the current position of the vehicle and the traveling direction of the vehicle,
a satellite radio wave receiving unit for receiving a radio signal from a satellite;
a vehicle position measurement unit that measures the position of the vehicle based on the radio signal;
a disaster report receiving unit that receives disaster reports related to disasters and crises that have occurred;
a notification unit that displays disaster occurrence information in a predetermined area of the display unit based on the location of the vehicle and the disaster target area information included in the disaster notification;
a disaster map generation unit that generates disaster map data including the position of the vehicle and a disaster target area;
an urgency determination unit that determines the urgency of the received disaster report;
an interrupt determination unit that determines whether to display a disaster map on the display unit in an interrupt manner based on the degree of urgency;
a notification unit that interrupts and displays the disaster risk map on the display unit when the degree of urgency is equal to or greater than a threshold;
with
The vehicle-mounted information terminal, wherein the predetermined area is the disaster target area on the disaster map. The disaster map data is classified by region,
5. The in-vehicle information terminal according to claim 4 , wherein the predetermined area is an area including the disaster target area.

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