JP2020088741A - On-vehicle information terminal - Google Patents

Abstract

To provide an on-vehicle information terminal for notifying a user of information about a disaster occurrence place with a vehicle position as reference when a disaster and crisis report is received.SOLUTION: An on-vehicle information terminal is mounted on a vehicle and includes a display section for displaying a present position of the vehicle and a travel direction of the vehicle. A satellite radio wave reception section 111 receives a radio wave signal from a satellite and measures a position of a vehicle based on the radio signal. A disaster and crisis report reception section 112 receives a disaster and crisis report related to a disaster or a crisis. A notification section 23 allows disaster and crisis occurrence information to be displayed in a predetermined area of the display section based on a position of a vehicle and disaster and crisis object area information included in a disaster and crisis report.SELECTED DRAWING: Figure 4

Description

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

2. Description of the Related Art Conventionally, various services using position information based on signals from GPS (Global Positioning System) satellites have been put into practical use. In addition to the system using GPS satellites, "Michibiki", which is a Japanese quasi-zenith orbit satellite system mainly composed of quasi-zenith orbit satellites, is known. Michibiki can use GPS satellites as a part of its system, and by using the satellites in the quasi-zenith orbit and GPS satellites in combination, stable and highly accurate positioning can be performed. Receivers that support "MICHIBIKI" can be procured at a relatively low cost, so it can be expected to develop a location information business that makes extensive use of geospatial information.

In addition to positioning of location information, receivers compatible with "MICHIBIKI" also provide emergency notification of earthquakes, tsunamis, floods, large-scale disasters, etc. issued by government agencies responsible for disaster risk management, and crisis management such as terrorism. Information such as information and official announcement information such as evacuation advisories can be received via the disaster/crisis management notification service (hereinafter referred to as disaster notification). By receiving the disaster notification from "MICHIBIKI", it is possible to quickly know the occurrence of a disaster or crisis at the place where the receiver is installed.

Disaster notification from Michibiki is expected as a tool for quick evacuation when a disaster occurs. When installing a receiver compatible with "MICHIBIKI" in the vehicle, instead of installing a dedicated receiver, the in-vehicle information terminal having other functions such as navigation receives the disaster notification from "MICHIBIKI". Attempts are being made to add functions and use the display of an in-vehicle information terminal to display emergency bulletins.

JP, 2014-147017, A

The disaster notification includes multiple types of information such as the type of disaster that has occurred, the alert level of the disaster, and the location where the disaster occurred. In addition, the situation in which the disaster notification is received, that is, the situation in which danger may be imminent around the user, puts high stress on the user and reduces the judgment. For this reason, even when it is displayed by the receiver dedicated to "MICHIBIKI", it is difficult to grasp a plurality of pieces of information and to grasp the content accurately in a situation where a high tension is imposed. Not only that, when displaying the disaster notification on the display of the car information terminal that is normally displaying for other purposes, information that the user does not intend will be displayed suddenly. It is difficult for the user to accurately grasp the contents of the disaster notification.

On the other hand, when the user receives a disaster notification, it is important to understand the location of the disaster, the location of the emergency notification or the location of the evacuation advisory when the user is driving the vehicle. high. Therefore, when a disaster notification 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 notification is issued (hereinafter referred to as the disaster target area). Has been.

The present invention has been proposed in order to solve the above-mentioned problems of the prior art, and an object thereof is, when a disaster notification is received, a place where a disaster or crisis occurs based on the vehicle position. Is to provide an in-vehicle information terminal that notifies the user.

In order to achieve the above object, an on-vehicle information terminal of the present invention is an on-vehicle information terminal which is mounted on a vehicle and includes a display unit that displays the current position of the vehicle and the traveling direction of the vehicle, and is a radio signal from a satellite. A satellite radio wave reception unit, a vehicle position measurement unit that measures the position of the vehicle based on the radio wave signal, a disaster danger notification reception unit that receives a disaster notification regarding a disaster or crisis that has occurred, and the vehicle And a notification unit for displaying disaster occurrence information on a predetermined area of the display unit based on the position and the disaster target area information included in the disaster notification.

The display unit displays the information, further including a disaster azimuth calculation unit that calculates the azimuth of the disaster target area based on the position of the vehicle from the position of the vehicle and the disaster target area information. There is a disaster direction information area provided at the edge of the display location, and the notification unit displays disaster occurrence information for a predetermined area within the disaster direction information area corresponding to the direction of the disaster target area. You may let me.

The disaster azimuth calculation unit has a predetermined number of azimuths of the disaster target area to be calculated, and the disaster danger azimuth notification region has a predetermined number of regions equal to the number of azimuths calculated by the disaster azimuth calculation unit. The notification unit is further provided, and further includes a notification region specification unit that specifies at least one predetermined region based on the traveling direction of the vehicle displayed on the display unit and the azimuth of the disaster-targeted area. May display the disaster risk occurrence information in a predetermined area designated by the notification area designation unit.

The disaster azimuth direction calculation unit calculates the azimuth of the disaster target area to be eight directions of east, west, south and north, and northeast, northwest, southeast and southwest, and the disaster risk azimuth notification area includes 8 directions. One predetermined area may be provided.

An urgency determination unit that determines the urgency of the received disaster notification, and a disaster notification notification determination unit that determines the display of the disaster occurrence information based on the urgency, and the urgency is When it is equal to or more than the threshold value, the disaster risk occurrence information may be displayed in a predetermined area of the display unit.

A disaster map generator that generates disaster map data that includes the position of the vehicle and the disaster target area, an urgency determination unit that determines the urgency of the received disaster alert, and an emergency level based on the urgency. And an interrupt determination unit that determines whether to display the disaster risk map on the display unit, and, if the urgency is equal to or higher than a threshold value, causes the disaster risk map to be displayed on the display unit. An alerting unit may be provided, and the predetermined area may be the disaster target area in the disaster risk map.

The map data may be divided into regions, and the predetermined region may be a region including the disaster target 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 occurs based on the vehicle position when receiving a disaster notification.

It is a perspective view which shows the vehicle-mounted information terminal of 1st Embodiment. It is a front view of the vehicle-mounted information terminal of 1st Embodiment. It is a hardware block diagram of the vehicle-mounted information terminal of 1st Embodiment. It is a functional block diagram of the vehicle-mounted information terminal of 1st Embodiment. It is a flowchart which shows the notification procedure of the disaster danger direction in the vehicle-mounted information terminal of 1st Embodiment. It is a figure which shows an example of the display screen of the vehicle-mounted information terminal which has notified the disaster danger direction. It is a hardware block diagram of the vehicle-mounted information terminal of 2nd Embodiment. It is a flowchart which shows the notification procedure of the disaster occurrence area in the vehicle-mounted information terminal of 2nd Embodiment. It is a figure of the vehicle-mounted information terminal which has notified the disaster target area on the 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 according to the present embodiment has a display unit, and has a function of displaying the vehicle position on the map displayed on the display unit in the normal operation mode in which the disaster notification is not received. The in-vehicle information terminal 100 includes the following (1) to (5).
(1) Drive recorder that records images inside and outside the vehicle (2) Navigation system that provides route guidance to the destination using position information and map information from GPS (3) Make the speed limit of vehicles such as automobiles comply Therefore, a radar detector that has the function of issuing warnings and promoting speed compliance (4) Car information terminal for non-stop automatic toll collection system (5) that can pass without stopping at toll gates when using toll roads Car audio that is installed in the vehicle and has the function of playing back content such as music and movies

Further, it may be the in-vehicle information terminal 100 having a function of measuring the own vehicle position based on a radio signal from a satellite, a function of receiving a disaster notification including a disaster occurrence location, and a display unit for notifying the user of information. However, the present invention is not limited to these, and includes various devices mounted on the vehicle. Below, the case where the vehicle-mounted information terminal 100 is a radar detector will be described as an example.

[1-2. In-vehicle information terminal configuration]
The external structure of the vehicle-mounted 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. 1 and 2.

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 a mounting 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 it is possible to change the angle of the main body 101 with respect to the dashboard by changing the angle of the support portion 102b. An attachment portion 102c for attaching 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 source of the vehicle-mounted information terminal 100, a vehicle-mounted battery mounted in the vehicle is used. For example, the vehicle-mounted device 100 may be connected to the vehicle-mounted battery via an OBD-II adapter or a cigarette lighter socket, or the direct wiring from the vehicle-mounted device 100 may be connected to the vehicle-mounted battery.

FIG. 2 is a front view showing the display 103 in this embodiment. Here, the front surface is a surface that faces the user when installed in the vehicle. The display 103 corresponds to the display unit in the present invention. The display 103 is a display device such as a liquid crystal that is provided on the front side of the main body 101 and displays 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 own vehicle position does not always have to be displayed, and when the user selects the setting to display the map on the display unit (hereinafter referred to as map mode), the own vehicle position is displayed on the displayed map. It may be displayed. In the map mode, the display 103 displays information such as guidance information and warnings in a predetermined layout. Further, the setting screen of the vehicle-mounted information terminal 100 may be displayed by switching the screen from the map mode. In the map mode, there is a disaster direction area A on the edge of the display 103. When the disaster risk notification is received, the disaster risk occurrence information is displayed in the disaster risk 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 continuous light emission, extinction, blinking, or the like. An LED is used as the lamp 104. The lamp 104 can indicate, for example, power-on, warning, etc. by light emission.

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

The satellite radio wave reception unit 111 receives radio waves from the GPS satellite and the "MICHIBIKI" satellite, calculates the latitude and longitude of the place where the radio wave is received, and outputs the coordinates of the vehicle position. The satellite radio wave reception 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 receiver 112 receives a disaster notification transmitted from, for example, "Michibiki", which is a Japanese quasi-zenith satellite system. Disaster notifications are sent from the Michibiki control station via quasi-zenith satellites, and disaster notifications include emergency notifications of earthquakes, tsunamis, floods, or large-scale disasters, crisis management information such as terrorism, and evacuation. This includes announcement information such as recommendations. In addition, in the disaster notification, information indicating the disaster target area for which the official announcement information is issued (for example, the name of prefecture, XX region, △△ coast, municipality, etc.) Contains latitude and longitude. Hereinafter, for the sake of explanation, it is assumed that the disaster notification is an emergency notification about an earthquake, and the disaster notification includes the estimated position coordinates of the epicenter. The receipt of the disaster notification is not limited to the disaster notification transmitted via the "MICHIBIKI" quasi-zenith satellite. For example, the disaster notification receiver 112 may receive the disaster notification transmitted from the base station of the mobile phone, or may receive the disaster notification distributed by the road traffic information 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 reception unit 111. Further, the time may be associated with the position information and speed information of the vehicle and stored as a travel log.

The acceleration sensor 114 is a sensor that detects the acceleration of the vehicle-mounted information terminal 100 or the installation target. The acceleration sensor 114 of this embodiment uses a 3G sensor that detects accelerations in the 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 vehicle-mounted information terminal 100. The in-vehicle information terminal 100 is used to complement the position of the own vehicle in the GPS unpositioned state with high accuracy. As the atmospheric pressure sensor 115, a pressure sensor using the piezoresistive effect can be used.

The gyro sensor 116 is a sensor that detects the angular velocity of the vehicle-mounted device 100 or the installation target, and is used to complement the position of the own vehicle in the GPS unpositioned state with high accuracy. The speaker 117 is an output device that notifies the user of specific information by voice. The memory card storage unit 118a is a recording medium storage unit that stores a portable storage medium such as a memory card. The memory card interface 118 is an interface for writing data to the memory card housed in the memory card housing unit 118a, reading data from the memory card, and formatting the memory card.

The control unit 121 controls the operation of each unit of the vehicle-mounted information terminal 100. The control unit 121 is a so-called computer mainly including a processor which is a central processing unit and provided with various memories, an input/output interface and the like. The processor performs arithmetic processing for inputting, storing, outputting information, and controlling peripheral devices according to the main program.

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

Furthermore, the vehicle-mounted information terminal 100 is provided with a signal port 119 and a communication unit 120. The signal port 119 is a vehicle information acquisition unit that acquires various information for the self-diagnosis function of the ECU of the vehicle, such as OBD-II. The signal port 119 is connected to, for example, an OBD-II connector of a vehicle via an adapter cable. Various kinds of information for the self-diagnosis function of the ECU are processed by CAN in the adapter and transmitted from the UART (serial) communication port in the adapter to the signal port 119. Various information for the self-diagnosis 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 a communication module connected to the network by tethering using Wi-Fi (registered trademark), Bluetooth (registered trademark), USB, or the like via an information communication terminal, for example. As the communication unit 120, for example, a communication module that has a function of connecting to a base station according to a communication standard such as 3G or 4G and can be connected to a network without using an information communication terminal can be used.

[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, a functional block diagram in which the function of each processing unit is illustrated in blocks is used.

When the control unit 121 receives a disaster notification associated with the occurrence of an earthquake, the control unit 121 extracts from the disaster notification the coordinates of the epicenter of the earthquake that is the target of the disaster notification. Then, based on the calculated coordinates and the coordinates of the own vehicle position, the azimuth of the epicenter when the position of the vehicle is used as a reference is calculated. Then, the azimuth of the epicenter is displayed on the display based on the calculated azimuth of the epicenter and the traveling direction of the vehicle. As shown in FIG. 4, the control unit 121 includes a disaster occurrence coordinate extraction unit 20, a disaster orientation 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 included in the disaster notification received by the disaster notification receiving unit 112.

The disaster azimuth calculation unit 21 calculates the location of the epicenter based on the location coordinates of the vehicle from the location 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. Calculate the bearing. 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 direction calculator 21 sets the line extending from the position coordinate of the own vehicle to the true north to the reference line L1, the line segment connecting the position coordinate of the own vehicle and the coordinate of the epicenter to the line segment L2, and the line segment By calculating the angle at which L2 and the reference line L1 intersect, the azimuth of the epicenter based on the position coordinates of the vehicle is calculated. The azimuth of the epicenter based on the position coordinates of the own vehicle is calculated by approximating the azimuth, west, south, north, and eight azimuths of northeast, northwest, southeast, and southwest. Here, it is assumed that the disaster direction calculating unit 21 calculates the direction of the epicenter as “northeast”.

The notification area designating unit 22 designates the disaster-prone azimuth notification area A on the display based on the traveling direction of the vehicle displayed on the display and the orientation of the epicenter based on the calculated position coordinates of the vehicle. Here, it is assumed that the traveling direction of the vehicle displayed on the display is set to a so-called “head-up”, which is always facing the upper part of the display. Also, disaster危方position notification area A, up and down, right and left, are the eight divided regions B _{1 to 8} diagonal.

The notification area designation unit 22 receives information on the traveling direction of the vehicle at regular intervals. For the traveling direction of the vehicle, the traveling direction 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 designation unit 22 calculates the relative orientation of the epicenter based on the vehicle from the information on the traveling direction of the vehicle and the orientation of the epicenter based on the position coordinates of the vehicle. For example, if the direction of travel of the vehicle is "North" and the orientation of the epicenter is "northeast," the relative orientation of the epicenter is "front" of the vehicle. It becomes 45°. Further, when the traveling direction of the vehicle is “south” and the orientation of the epicenter is “northeast” with respect to the vehicle, the relative orientation of the epicenter with respect to the vehicle is 45 diagonally to the left rear of the vehicle. Becomes °.

Then, the notification area specifying unit 22 specifies the disaster direction information area A on 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 orientation of the epicenter is “northeast” with respect to the vehicle, the divided area B located at 45° diagonally to the front right of the vehicle is displayed on the display. specify. For example, the divided area is B ₂ .

The notification unit 23 outputs a notification instruction signal for displaying the disaster risk occurrence information in the divided area B ₂ designated by the notification area designation unit 22. The display that has received the notification instruction signal displays the disaster risk occurrence information in the divided area B ₂ indicated by the notification instruction signal. The disaster risk information may be displayed as an icon according to the type of disaster, or a part or all of the divided area may be lit or blinked.

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

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

After measuring the own vehicle position, when the disaster notification receiving unit 112 receives the disaster notification associated with the occurrence of the earthquake transmitted from "MICHIBIKI" (YES in S12), the disaster occurrence coordinate extraction unit 20 causes the disaster. Coordinate data of the epicenter included in the danger report is extracted (S13).

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

Further, the notification area designating unit 22 specifies the notification area from "North" which is the current traveling direction of the vehicle and the estimated direction "Northeast" of the epicenter based on the own vehicle position (S15). .. If the direction of travel of the vehicle is “North” and the orientation of the epicenter is “northeast” with respect to the vehicle, the relative orientation of the epicenter with respect to the vehicle is 45° diagonally to the front right of the vehicle. is there. The notification area designating section 22 designates a divided area B ₂ within the disaster direction reporting area A, which indicates 45° to the right front of the vehicle displayed on the display.

Then, the notification unit 23 outputs the notification instruction signal red lighting the divided region B ₂ the notification area specifying unit 22 specifies (S16). On the other hand, when the disaster notification is not received (NO in S12), the process returns to S12 and waits until the disaster notification is received. FIG. 6 is a diagram showing an example of a display screen of the display of the present embodiment. In FIG. 6, a vehicle traveling northward is shown on the map displayed on the display 103. This map and vehicle display are also displayed on the drive recorder that has not received the disaster notification. When receiving the Wazawai危monitor is the divided region B ₂ in the disaster危方position notification region A showing the front right oblique 45 ° of the vehicle traveling toward on the map north is turned on. An angle of 45° to the right of the front of the vehicle heading north coincides with the estimated azimuth of the epicenter.

[1-6. effect]
(1) When the vehicle-mounted information terminal 100 according to the present embodiment as described above receives a disaster notification including information on the disaster-targeted area, it displays based on the position of the vehicle and the disaster-targeted area. The disaster risk occurrence information is displayed in the divided regions B ₁ to ₈ in the disaster risk direction notification region A provided on the edge of the. As a result, the user can grasp the direction in which the disaster occurred while confirming the normal display screen displayed on the display. Therefore, it is possible to realize the vehicle-mounted information terminal 100 in which the user can easily grasp the direction of the disaster target area when receiving the information of high urgency.

Further, in the present embodiment, after the disaster azimuth calculation unit 21 calculates the azimuth of the epicenter estimated based on the vehicle position, the notification area designating unit 22 instantly divides the disaster azimuth notification area A into divided areas B _{1 to} B _{1. The} disaster occurrence information is displayed on 8. Therefore, the direction of the disaster target area, which is easy for the user to grasp according to the current traveling direction of the vehicle, can be notified in almost real time after receiving the disaster notification. Further, the notification area designating section 22 may acquire the traveling direction of the vehicle displayed on the display 103 at predetermined intervals. In this case, the notification area designating unit 22 designates the divided areas B _{1 to 8} for displaying the disaster risk occurrence information based on the traveling direction of the vehicle acquired at the 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 notification is an emergency notification about an earthquake, and the disaster notification includes the estimated position coordinates of the epicenter. If the disaster notification is an emergency notification such as tsunami other than earthquake, flood, or large-scale disaster, crisis management information such as terrorism, official announcement information such as evacuation advisory, etc. Instead of including coordinates, it may include information indicating the area targeted by the announcement information. In that case, the memory is stored in advance in the memory in association with the position coordinates that represent the area name that may become the disaster risk area. Then, when the 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 the information indicating the XX prefecture is received as the target area of the official announcement information, the memory can be referred to, the representative coordinates representing the XX prefecture can be called, and the representative coordinates can be used.

(2) In the present embodiment, one of the eight divided areas B _{1 to} 8 in the disaster direction information area A is designated based on the traveling direction of the vehicle displayed on the display and the direction of the disaster target area. This makes it possible to realize the vehicle-mounted information terminal 100 in which the user can easily grasp the direction of the disaster target area regardless of whether the map display setting displayed on the display is north-up or head-up.

(3) In addition, the disaster risk location notification area is divided into eight areas. In the event of a disaster, it is necessary to know the approximate direction and act promptly. By setting the disaster danger place in eight directions, the user can intuitively understand the disaster danger place, and it can be helpful for an instant judgment. Further, the disaster occurrence location notification area need not be divided into eight areas. For example, it may be four orientations, or 16 orientations or 32 orientations.

(4) Furthermore, the control unit determines the urgency level of the received disaster notification, and an emergency level determination unit that determines whether or not the disaster direction area A is lit or blinking based on the determined urgency level. It may be provided with a danger notification notifying unit. 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 vehicle position", and "earthquake occurrence time". For example, when the degree of urgency is equal to or higher than a certain level, the disaster risk notification notification determination unit determines to turn on or blink the disaster risk direction notification region A. As a result, the user can be notified of the information about the disaster-targeted area only when the emergency notification with high urgency is received. Since the user does not need to select the information to be notified, it becomes easy to understand the notified disaster risk notification.

[2. Second Embodiment]
[2-1. Constitution]
A second embodiment for carrying out the present invention will be described with reference to the drawings. In the present embodiment, when notifying a disaster report, a disaster map including the vehicle position and the disaster target area is displayed on the display as an interrupt, and the disaster target area on the displayed disaster map is displayed as an interrupt. It is characterized by displaying danger information. In the first embodiment, only the direction of the disaster target area is notified, but in the present embodiment, the vehicle position and the disaster target area can be grasped on the map. In the following, the disaster notification is assumed to be "tornado caution information" in the disaster type "weather", and the "tornado caution information" has been issued to XX city and △△ city.

[Each processing unit of the control unit]
As shown in FIG. 7, 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.

The disaster-targeted area extraction unit 31 detects the area where the disaster has occurred from the received disaster notification. The disaster target area extraction unit 31 extracts information indicating the XX city and the ΔΔ city as the 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 position of the vehicle is the X city, disaster map data including the X city where the vehicle is located and the XX city and the ΔΔ city that are the disaster target areas is created. When creating map data, the map data creation 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 urgency of the received disaster notification, and determines whether or not the disaster map is to be interrupt-displayed on the display 103 based on the determined urgency. For example, the urgency is classified into 1 to 10 levels. As for the classified urgency, the higher the value, the higher the urgency. When an emergency call associated with the occurrence of a tornado is received as disaster information, the degree of urgency is determined based on the "distance between the own vehicle position and the disaster target area" and the "tornado occurrence time". For example, when the distance between the own vehicle position and the area where the tornado warning is issued is 30 km or less, the interrupt determination unit 33 determines that the emergency level is “6” or more and the interrupt display is performed. ..

The notification unit 34 receives the determination that the interrupt display is to be performed, and instructs the notification unit 34 to display the disaster risk map data. The notification unit 34 switches the display content displayed on the radar detector that has not received the disaster notification, and displays the disaster map based on the disaster map data. Further, the notification unit 34 displays the disaster risk occurrence information on the area C indicating the XX city and the ΔΔ city, which are the disaster target areas in the disaster map displayed on the display. The disaster risk information may be displayed as an icon according to the type of disaster, or a part or all of the divided area may be lit or blinked.

[2-2. Action]
Also in this embodiment, the vehicle position is measured as in the first embodiment (S21). When the disaster notification is received after measuring the own vehicle position (YES in S22), information indicating the XX city and the Δ△ city, which are the disaster target areas included in the disaster notification, is extracted (S23). ..

Then, a disaster risk map is created from the position coordinates of the vehicle position and the information indicating the XX city and the ΔΔ city (S24). When the position of the vehicle is X city and the disaster target area is XX city, △△ city, a disaster map including X city, XX city, and △△ city is created. Then, the interrupt determination is performed based on the urgency of the received disaster alert (S25), and when the urgency is equal to or higher than a certain value (YES in S25), it is determined that the interrupt display is performed, and the display is performed. A disaster risk map is displayed at 103. On the disaster map, the 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 risk occurrence area for a disaster risk target area. In FIG. 9, the disaster risk map is drawn on the display 103 for each region. On the disaster map, the areas showing the XX city and △△ city, which are the target areas of the disaster, are lit in red. In addition, the position of the vehicle indicated by ▲ is displayed on the disaster map.

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

[2-3. effect]
When the vehicle-mounted information terminal 100 according to the present embodiment as described above receives the disaster notification, it displays the disaster map including the position of the vehicle and the disaster-targeted area on the display, so that the disaster-targeted area is displayed to the user. To inform. Since the disaster target area is highlighted on the disaster risk map, the user can easily understand the target area of the disaster notification. Further, by displaying disaster occurrence information on the disaster map, the user is notified of the content of the disaster notification together with the disaster target area. Therefore, it is possible to realize the vehicle-mounted information terminal 100 in which the user can easily grasp the disaster target area when receiving the information of high urgency.

[3. Other Embodiments]
The present invention is not limited to the above-mentioned embodiment, but includes other embodiments. Further, the invention also includes a form in which all or any of the above-described embodiments are combined. Further, various omissions, replacements, and changes can be made to these embodiments without departing from the scope of the invention, and modifications thereof are also included in the present invention.

For example, in the normal operation mode, the vehicle-mounted information terminal 100 has the function of displaying the own vehicle position on the map displayed on the display unit, but displays the map indicating the own vehicle position on the display unit. Then, other functions may be displayed on the display unit. For example, 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 vehicle-mounted information terminal 100, and the like may be displayed together with the map showing the vehicle position.

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... Disaster warning receiving part 113... Clock 114... Acceleration sensor 115... Atmospheric pressure sensor 116... Gyro sensor 117... Speaker 118... Memory card interface 118a... Memory card housing section 119... Signal port 120... Communication section 121... Control section 20... Disaster danger coordinate extraction section 21... Disaster danger direction calculation section 22... Notification Area designation unit 23...Notification unit 31...Disaster hazard target area extraction unit 32...Map data creation unit 33...Interruption determination unit 34...Notification unit

Claims (7)

An in-vehicle information terminal, which is mounted on a vehicle and includes a display unit that displays a current position of the vehicle and a traveling direction of the vehicle,
A satellite radio reception unit that receives radio signals from satellites,
A vehicle position measuring unit that measures the position of the vehicle based on the radio signal,
A disaster alert receiver that receives alerts about disasters and crises that have occurred,
A notification unit that displays disaster occurrence information on 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,
An in-vehicle information terminal, comprising: From the position of the vehicle and the disaster target area information, further comprising a disaster orientation calculating unit for calculating the orientation of the disaster target area based on the position of the vehicle,
The display unit has a disaster-orientation notification area provided at the edge of a display portion for displaying information,
The vehicle-mounted information terminal according to claim 1, wherein the notification unit displays the disaster risk occurrence information in a predetermined area in the disaster danger direction notification area corresponding to the direction of the disaster target area. The disaster azimuth calculation unit has a predetermined number of azimuths of the disaster target area to be calculated,
In the disaster-orientation notification area, the same number of predetermined areas as the number of orientations calculated by the disaster-orientation calculation unit are arranged,
A traveling area of the vehicle displayed on the display unit, and a notification area designating unit that designates at least one predetermined area based on the azimuth of the disaster target area,
The vehicle-mounted information terminal according to claim 2, wherein the notification unit displays the disaster risk occurrence information in a predetermined area designated by the notification area designation unit. The disaster azimuth calculation unit calculates the azimuth of the disaster-targeted area as 8 directions of east, west, south and north, and northeast, northwest, southeast and southwest,
The vehicle-mounted information terminal according to claim 2 or 3, wherein eight predetermined areas are provided in the disaster critical direction notification area. An urgency determination unit that determines the urgency of the received disaster notification,
Based on the urgency, a disaster notification notification determination unit that performs a display determination of the disaster occurrence information,
Equipped with
The in-vehicle information terminal according to any one of claims 1 to 4, wherein when the urgency level is equal to or higher than a threshold value, the disaster occurrence information is displayed in a predetermined area of the display unit. A disaster map generator that generates disaster map data including the position of the vehicle and the disaster target area;
An urgency determination unit that determines the urgency of the received disaster notification,
An interrupt determination unit that determines whether to display the disaster map on the display unit based on the degree of urgency,
When the urgency is equal to or higher than a threshold value, a notification unit for displaying the disaster risk map on the display unit,
Equipped with
The vehicle-mounted information terminal according to claim 1, wherein the predetermined area is the disaster target area on the disaster map. The map data is divided by region,
The vehicle-mounted information terminal according to claim 5, wherein the predetermined area is an area including the disaster-targeted area.

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