JP2014063239A - Moving body information communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a moving body information communication device which is mounted on a moving body and can acquire information about reverse driving of another moving body and notify a driver of the moving body of information for avoiding a dangerous situation.SOLUTION: A moving body information communication device 10 which is mounted on a moving body and exchanges information with other moving bodies, comprises: a current position detection unit 4 which detects a current position of the moving body; a communication unit 8 which transmits reverse driving information of the moving body including its current position to the other moving bodies, and receives reverse driving information of the other moving body including its current position; a notification unit 2 (and/or 9) which notifies a driver of the moving body of the received reverse driving information of the other moving body; and a control unit 1 which controls the communication unit 8 to transmit the current position and reverse driving information of the moving body to the other moving bodies when the moving body is detected performing reverse driving, and controls the notification unit 2 (and/or 9) to notify the driver of the reverse driving information of the other moving body when the communication unit 8 receives the current position and reverse driving information of the other moving body.

Description

  The present invention relates to a mobile information communication apparatus, and in particular, transmits information related to traveling of the own vehicle (mobile) to other vehicles (other mobiles) and receives information related to traveling of other vehicles. Thus, the present invention relates to a mobile information communication apparatus that performs predetermined notification.

  In recent years, intelligent transport systems (Intelligent Transport Systems, hereinafter referred to as “ITS”) aiming to solve road traffic problems such as traffic accidents and traffic jams by networking people, roads and vehicles with information using information communication technology. Is being researched and developed. The form of wireless communication for automobiles in the field dealing with the safe driving support system in ITS can be broadly divided into road-to-vehicle communication and vehicle-to-vehicle communication. In road-to-vehicle communication, roadside machines and vehicles communicate information, whereas in vehicle-to-vehicle communication, vehicles directly communicate information.

  Information transmitted from the vehicle to the vehicle by the inter-vehicle communication includes information indicating the traveling state of the vehicle such as the current position of the vehicle (own vehicle and / or other vehicle), moving speed, traveling direction, vehicle driver information, and the like. included. A mobile communication apparatus that performs various controls using each information has been proposed.

  As a mobile communication device that performs control based on vehicle driver information, for example, an inter-vehicle communication device disclosed in the following Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-97443) can be cited.

  The inter-vehicle communication device disclosed in Patent Document 1 includes a vehicle position detection unit that detects the current position of the vehicle, and driver information of the driver of the vehicle (whether it corresponds to a beginner driver or an elderly driver). A driver information acquisition unit that acquires the vehicle position information and the driver information, and a transmission / reception unit that receives the other vehicle position information transmitted from the other vehicle and the driver information of the other vehicle, And a display unit that displays the position of the host vehicle on the map and the position information of the other vehicle and the driver information of the other vehicle.

  According to this configuration, when the driver of the own vehicle is a beginner driver or an elderly driver (hereinafter referred to as “beginner driver etc.”), it is assumed that an accident is likely to occur. Driver information is transmitted to the inter-vehicle communication device installed in the other vehicle, and when the driver of the other vehicle is a beginner driver, the driver information of the other vehicle is received and the vehicle is driven. It is supposed to be able to support safe and secure driving in order to call attention.

  A road-to-vehicle communication device is also known in which a roadside machine and a vehicle installed near a road communicate information. As such a road-vehicle communication apparatus, the road-vehicle communication apparatus currently disclosed by the following patent document 2 (Unexamined-Japanese-Patent No. 2009-151567) can be mentioned, for example.

  The road-to-vehicle communication device disclosed in Patent Document 2 is a first roadside wireless device that gives entrance gate passage information indicating that the vehicle has entered a toll road to a vehicle passing through a communicable range. Is installed in the inflow ramp of the toll road, and the second roadside radio device that acquires the entrance gate passage information given by the first roadside radio device from the vehicle passing through the communicable range is provided in the outflow ramp of the toll road and managed The second roadside radio device having the function as a device determines whether or not entrance gate passage information is acquired from the passing vehicle, and if the entrance gate passage information is not acquired, the second roadside wireless device is running backward to the vehicle. Is configured to warn you that.

According to such a configuration, since the driver of the vehicle can receive a warning notification in the case of reverse running by mistake, it can be dealt with immediately and accidents can be prevented.

JP 2010-97443 A JP 2009-151567 A

  In the road-to-vehicle communication device of Patent Document 2, a vehicle that has caused reverse running on the road can be notified of reverse running abnormality and can appropriately deal with the abnormality. However, other vehicles traveling in the vicinity of the vehicle cannot recognize the presence of an abnormal (reverse running) vehicle, for example, when it is raining, at night, or in a place where the front visibility is poor. There is a risk of contact.

  On the other hand, in the inter-vehicle communication device of Patent Literature 1, since the current position of the other vehicle is acquired as information, the position of the other vehicle can be recognized according to the information. However, only the current position of the other vehicle and the driver information are acquired, and it is impossible to grasp whether or not the other vehicle is in an abnormal state such as reverse running only by such information. Therefore, for example, there is a possibility that a situation such as a rear-end collision with another vehicle that runs backward from the front cannot be avoided.

  It is an object of the present invention to solve the above-mentioned problems, and it is possible to acquire information for avoiding a dangerous state in advance by acquiring reverse running information of another moving body. The object is to provide a physical information communication device.

  In order to solve the above-described problem, an invention according to claim 1 of the present application is a mobile information communication device that is mounted on a mobile body and transmits / receives information to / from another mobile body. A current position detection unit to detect, a communication unit that transmits reverse running information including the current position of the mobile body to the other mobile body, and receives reverse running information including the current position of the other mobile body; A notifying unit for notifying the reverse running information of the other moving body that has been received, and controlling the communication unit when the reverse running of the moving body is detected, and the current position and the reverse running information for the other moving And a control unit that controls the notification unit to notify the reverse running information when the communication unit receives the current position and the reverse running information of the other moving body. It is characterized by.

  The invention according to claim 2 of the present application is the mobile information communication apparatus according to claim 1, wherein the control unit detects the reverse running information to the other mobile body when detecting the reverse running cancellation of the mobile body. The mobile information communication apparatus according to claim 1, wherein transmission of the mobile information is stopped.

  The invention according to claim 3 of the present application is the mobile information communication apparatus according to claim 1 or 2, further comprising a map information storage unit that stores map information, wherein the control unit includes the current position and the map information. The road is identified based on the information, and the information on the road is included in the reverse running information.

According to a fourth aspect of the present invention, in the mobile information communication device according to the third aspect, when the control unit receives the current position and the reverse running information, the control unit includes information on the current position and the traveling road. And determining whether the information is related to the own mobile body based on the information, and determining that the information is related to the own mobile body, the control section notifies the reverse running information by controlling the notification section. To do.

  The invention according to claim 5 of the present application is the mobile information communication apparatus according to any one of claims 1 to 4, wherein the control unit is configured to transmit the reverse running information of the other mobile body. A distance to the other moving body is calculated based on a current position, and control for notifying the reverse running information to the notification unit together with the distance to the other moving body is performed.

  In the invention according to claim 1, in a mobile information communication device mounted on a mobile body and transmitting / receiving information to / from another mobile body, a current position detection unit that detects a current position of the mobile body, Transmitting the reverse running information including the current position of the moving body to the other moving body, receiving the reverse running information including the current position of the other moving body, and the received of the other moving body An informing unit for informing reverse running information, and transmitting the current position and the reverse running information to the other mobile unit by controlling the communication unit when detecting reverse running of the mobile unit, A control unit that controls the notification unit to notify the reverse running information when the current position and the reverse running information of the other moving body are received.

  By configuring in this way, by receiving reverse running information including the current position of another moving body and notifying the reporting unit of the backward running information, it is recognized that there is a moving body in the vicinity. Therefore, it is possible to move safely while avoiding accidents.

  According to a second aspect of the present invention, in the mobile information communication apparatus according to the first aspect, when the control unit detects the reverse travel cancellation of the mobile body, the reverse travel information of the other mobile body is stored. Stop sending.

  By configuring in this way, when the reverse running state is resolved by entering a U-turn or a side road, the reverse running information notification in other vehicles is stopped, so that the driver is not confused.

  According to a third aspect of the present invention, in the mobile information communication apparatus according to the first or second aspect of the present invention, the mobile information communication device includes a map information storage unit that stores map information, and the control unit includes the current position and the map information. A travel road is identified based on the information, and the information on the travel road is included in the reverse travel information.

  With this configuration, since the road on which the reverse running vehicle is traveling is specified, it is possible to easily determine whether the driver in another vehicle is related to the own vehicle.

  According to a fourth aspect of the present invention, in the mobile information communication apparatus according to the third aspect, when the control unit receives the current position and the reverse running information, the control unit is based on the information on the current position and the traveling road. Then, it is determined whether the information is related to the own mobile body, and if the information is related to the own mobile body, the reporting section is controlled to report the reverse running information.

  By comprising in this way, when the road on which the reverse running vehicle is traveling is not related to the host vehicle, the notification of the reverse running information is stopped, so that the driver is not unnecessarily confused.

  In the invention concerning Claim 5, in the mobile body information communication apparatus of any one of Claim 1 thru | or 4, the said control part is the said other mobile body which transmitted the said reverse running information. Based on the current position, a distance to the other moving body is calculated, and control for notifying the reverse running information to the notification unit together with the distance to the other moving body is performed.

By comprising in this way, only the reverse running concerning the other moving body within the predetermined distance ahead of a moving direction can be alert | reported, and a driver | operator is not disturbed mischievously.

It is a block diagram which shows the structure of the mobile information communication apparatus which concerns on the Example of this invention. It is a flowchart which shows the process sequence of the mobile body information communication apparatus in the mobile body of a transmission side. It is a flowchart which shows the process sequence of the mobile body information communication apparatus in the mobile body of a receiving side. It is a figure which shows an example of the alerting | reporting information displayed on the alerting | reporting part of the mobile body information communication apparatus in the mobile body of a receiving side.

  Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment shown below exemplifies a mobile information communication apparatus for embodying the technical idea of the present invention, and is intended to specify the present invention as this mobile information communication apparatus. However, the present invention is equally applicable to the mobile information communication apparatus of other embodiments included in the scope of claims. For example, it may be incorporated in a navigation device, or may be a device that can be removed from a vehicle and carried.

  First, the mobile information communication apparatus of this embodiment will be described with reference to FIG. FIG. 1 is an internal block diagram of the mobile information communication apparatus 10 of the present embodiment. The mobile body information communication device 10 is mounted on a mobile body, for example, a vehicle such as an automobile.

  The mobile body information communication device 10 includes a control unit 1, a display unit 2, an operation unit 3, a current position detection unit 4, a map information storage unit 5, a travel history storage unit 6, a battery 7, and a communication unit 8. And a speaker 9.

  The control unit 1 is a control unit that comprehensively controls the entire mobile information communication apparatus 10. The control unit 1 includes a CPU, a ROM, and a RAM (all not shown). The ROM stores a program executed by the control unit 1 and parameters and data necessary for executing the program. The CPU executes various programs stored in the ROM. The RAM temporarily stores data obtained during various processes and data obtained as a result of various processes. These CPU, RAM, ROM and the like are connected via a bus. Note that the CPU, ROM, and RAM may be partially or fully integrated on one chip.

  The display unit 2 displays a map screen (a screen displaying a map image including a route to the destination, a mark indicating the current position of the vehicle (the vehicle on which the mobile information communication device 10 is mounted), etc.) and a menu screen. Display means. The display unit 2 also functions as a notifying unit for displaying information received from the mobile information communication device 10 installed in another vehicle and notifying the user vehicle. In the case of performing notification by voice, the speaker 9 can also function as a notification unit.

  The operation unit 3 is input operation means for a user to operate a menu. As the operation unit 3, various keys and buttons may be provided on the mobile information communication main body, or a touch panel function may be added to the display unit 2. Further, a remote controller for remotely operating the main body of the mobile information communication device 10 as the operation unit 3 may be used as the operation unit 3.

The current position detection unit 4 detects the current position of the host vehicle and includes a GPS receiver, a self-contained navigation means, a position calculation CPU, and the like. The self-contained navigation means includes a steering angle sensor, an acceleration sensor, a distance sensor, a direction sensor, and the like, detects the travel distance and the traveling direction of the own vehicle, and obtains the current position based on these values. The GPS receiver receives radio waves transmitted from a plurality of GPS satellites with a GPS antenna and performs a three-dimensional positioning process or a two-dimensional positioning process to calculate the absolute position and traveling direction of the own vehicle. Here, the traveling direction is calculated based on the current vehicle position and the previous vehicle position. In addition, the detection method of the advancing direction is not specifically limited, For example, it is good also as detecting from the rotation direction of a tire, and you may detect using a direction sensor. Further, the current position detection unit 4 may detect the moving speed of the host vehicle on which the mobile information communication device 10 is mounted. The moving speed may be calculated from the output of the vehicle speed sensor or the acceleration sensor, or may be calculated from the difference between the travel distance between the GPS histories and the GPS reception time.

  The map information storage unit 5 stores the map information referred to by the mobile information communication device 10 and the fact that a specific point on the map information is a user's home position, company position, or the like. The map information may include network data (node data, link data). As the map information storage unit 5, a NAND flash, an SD memory card, or the like can be suitably used. The map information storage unit 5 may be built in the mobile information communication device 10 or may be configured to be detachable from the mobile information communication device 10. The map information may include a map image, or a map image may be drawn on the display unit 2 based on network data (node data, link data) included in the map information. Further, the map information may be stored in advance in the map information storage unit 5, or the communication unit 8 may receive map information from a roadside machine or the like, and the received map information may be stored in the map information storage unit 5. .

  Here, the map information includes network data, and the network data is composed of node data whose nodes are nodes such as roads at their inflection points and branch points, and link data whose links are links between the nodes. Is done. Node data includes node attributes such as node number, node position coordinates (latitude / longitude), road type, information indicating intersection information, intersection name, etc., and the number of connection links and connection link number data. Also good.

  In addition, the link data includes the link number including the node number that is the start and end points of the link, the road type (general road, expressway), distance and / or required time, the road name such as the national highway ○, the traveling direction Consists of data. In addition to the above, link data includes data such as bridges, tunnels, railroad crossings, and tollgates as link attributes.

  The network data includes road node data and link data. When specifying a road on which the host vehicle is currently traveling, which will be described later, the control unit 1 detects the current position of the host vehicle detected by the current position detection unit 4 (the traveling direction and the moving speed may be added) and a map. Based on the information, it can be specified by performing a map matching process.

  The map matching process may be performed by the control unit 1 or the current position detection unit 4. That is, based on the current position detected using a GPS receiver and / or autonomous navigation means and map information, map matching processing is performed, and the current position where map matching processing has been performed is output to the control unit 1 as the current position. Also good. Alternatively, the current position detection unit 4 including the map matching process of the control unit 1 may be used.

The travel history storage unit 6 stores travel history information of the vehicle on which the mobile body information communication device 10 is mounted. Specifically, based on the current position of the vehicle detected by the current position detection unit 4 and the map information stored in the map information storage unit 5, every predetermined time, every time the current position is detected, or predetermined Information on the travel position of the vehicle is stored as travel history information of the vehicle for each distance. Information related to the travel position of the vehicle (running history information) includes date and time (for example, the date and time when the position coordinates are stored), position coordinates including the latitude X and longitude Z that indicate the current position at each date and time (position after map matching processing) The coordinates (which may be coordinates), the road name of the road on which the vehicle is traveling (such as the national highway No. ○ line), and the closest (closest) node number from the current position of the vehicle on the road are stored.

  When the amount of travel history data exceeds the capacity of the travel history storage unit 6, the control unit 1 deletes old data and stores new data. The storage in the travel history storage unit 6 includes vehicle information and map information from when the user gives a recording instruction using the operation unit 3 to when a recording stop instruction (may be turned off) is issued. It may be generated on the basis of the mobile information communication device 10 or whenever the mobile information communication device 10 is powered on. In addition, the travel history information is acquired by various methods such as wired / wireless communication and stored in the travel history storage unit 6 even if the mobile information communication device 10 does not generate the travel history information. May be.

  The battery 7 is a power supply means when the mobile information communication device 10 is used in a portable manner, and a secondary battery such as a lithium ion battery or a nickel metal hydride battery can be suitably used. Of course, as the battery 7, a primary battery such as an alkaline manganese dry battery or a manganese dry battery may be used, or a fuel cell may be used.

  The communication unit 8 is transmitted from a communication unit (not shown) that transmits information to another communication device that can communicate with the mobile information communication device 10 (hereinafter referred to as “other communication device”) and the other communication device. And a receiving unit (not shown) for receiving information. The communication method is preferably non-contact communication such as wireless communication or infrared communication. Examples of other communication devices include in-vehicle devices such as mobile information communication devices mounted on other vehicles (other mobile objects), roadside devices, and mobile communication terminals such as mobile phones possessed by pedestrians. .

  Information received by the communication unit 8 from another communication device (another mobile body information communication device mounted on another mobile body) includes vehicle information of another vehicle (another mobile body). The vehicle information of the other vehicle (other moving body) includes information on the current position, moving speed, and traveling direction of the other vehicle (other moving body).

  The speaker 9 notifies various information by voice. The notification method is not particularly limited as long as the content can be understood. The notification method may be performed by displaying predetermined characters or images on the display unit 2, or may be performed simultaneously with sound and display. . For simplification of explanation, the speaker 9 and the display unit 2 are provided as separate components. However, when the notification method includes display of a predetermined character or image on the display unit 2, the speaker 9 is connected to the display unit 2. You may provide as a structure contained in.

  Next, the operation of the mobile information communication apparatus 10 will be described with reference to FIGS. FIG. 2 is a processing flowchart of the mobile information communication apparatus 10 in the mobile body on the transmission side. FIG. 3 is a processing flowchart of the mobile information communication apparatus 10 in the mobile body on the receiving side.

  First, processing of the mobile information communication apparatus 10 on the transmission side will be described with reference to FIG. The control unit 1 acquires vehicle information from various sensors provided in the vehicle. Further, the control unit 1 acquires map information including the current position from the current position of the vehicle detected by the current position detection unit 4 and the map information stored in the map information storage unit 5 based on the current position. When the vehicle is running backward based on the acquired current position and map information, the control unit 1 detects this (step S201).

The reverse running can be detected by several methods as described below. For example, it can be performed by performing map matching using the current position of the vehicle and map information including the current position. When the position of the vehicle matched by map matching is a one-way road and the traveling direction of the vehicle is different from the permitted traveling direction, or the traveling direction of the vehicle is different from the lane traveling direction of the expressway It can be determined that the car runs backward. In the case of an expressway, it can be determined that the vehicle is running backward when a beacon is received from a roadside machine installed at the entrance of the expressway and the vehicle is not traveling in the correct direction (see Patent Document 2). When detecting reverse running, the control unit 1 can refer to the travel history stored in the travel history storage unit 6 as necessary.

  Next, the control unit 1 transmits reverse running information including the current position, the name of the road on which the vehicle is traveling, and the like to other mobile body information communication devices 10 mounted on other vehicles via the communication unit 8 (step S202). Moreover, the control part 1 alert | reports that the own vehicle is in a reverse running state using alerting | reporting parts, such as the display part 2 or the speaker 9, (step S203). For example, a warning indicating that the host vehicle is running backward is displayed on the display unit 2, or a sound indicating that the host vehicle is running backward is output by the speaker 9.

  Next, the control unit 1 determines whether or not the reverse running state has been resolved by making a U-turn or entering a side road from the current position of the vehicle and the map information including the current position (step S204). . If it has not been eliminated (NO in step S204), the process returns to step S202, and the reverse running information transmission process is repeated. If reverse running has been resolved (YES in step S204), the process proceeds to step S205. By this processing, when the reverse running state is resolved by entering a U-turn or a side road, the reverse running information notification in other vehicles is stopped, so that the driver is not unnecessarily confused.

  The control unit 1 stops transmission of reverse running information in the process of step S205, ends the reverse running notification for the host vehicle (step S206), and ends the process.

  As described above, when reverse running is detected in the transmission-side vehicle, there is a concern about the occurrence of a collision accident with a vehicle traveling around. As described above, the reverse traveling information is transmitted to the mobile body information communication device 10 of the vehicle traveling around, and the driver has the reverse traveling vehicle by notifying that there is a backward traveling mobile body. Can be made aware of this and deal with it so that it can move safely while avoiding accidents.

  Next, processing of the mobile information communication apparatus 10 on the reception side will be described with reference to FIG. When the communication unit 8 receives the current position of the other vehicle, the name of the road on which the vehicle is traveling, and reverse running information (step S301), the communication unit 8 sends the information to the control unit 1. The control unit 1 compares the current position of the other vehicle acquired via the communication unit 8 with the current position of the own vehicle detected by the current position detection unit 4, and the other vehicle that is a reverse running vehicle travels on the own vehicle. It is determined whether or not the vehicle is ahead in the direction (step S302).

  The traveling direction of the host vehicle can be calculated based on the current host vehicle position and the immediately preceding host vehicle position. Since the reverse running information includes the current position and the name of the traveling road, the mobile information communication device 10 that has received the reverse running information affects the own vehicle based on the traveling road name of the own vehicle and the calculated distance. Therefore, it is possible to notify only when the vehicle is related. By such processing, when the road on which the reverse running vehicle is traveling is not related to the host vehicle, the notification of the reverse running information is stopped, so that the driver is not confused.

  If the calculated distance between the host vehicle and the reverse vehicle is equal to or greater than the predetermined distance, the other vehicle within the predetermined distance ahead of the moving direction is applied if the reverse information is not notified. Only reverse running can be obtained and notified.

When it is determined that the other vehicle that is a reverse running vehicle is in front of the host vehicle (YES in step S302), the distance between the current position of the other vehicle and the current position of the host vehicle is calculated (step S303). And the control part 1 alert | reports that there exists a reverse running vehicle ahead of the own vehicle (step S304). In this case, the display unit 2 or the notification unit 8, for example, based on the distance between the current position of the other vehicle and the current position of the host vehicle, as shown in FIG. In addition to displaying information, a warning sound is output and notified as necessary to alert the driver.

  Next, the control unit 1 determines whether or not the reverse running information is continuously received (step S305). If reception of the reverse running information is continued (YES in step S305), the process returns to step S302.

  On the other hand, when the reception of reverse running information is not continued (NO in step S305), the reverse running state has been resolved by another vehicle that has run backward, making a U-turn or entering a side road. Therefore, the display of the reverse running information notified in the process of step S304 is terminated (step S306), and the process is terminated.

  In this way, the receiving vehicle can sufficiently recognize that there is a reverse running vehicle at a certain distance ahead of its own vehicle in accordance with the notification content, and thus avoids situations such as contact with the reverse running vehicle in advance. be able to.

  In addition, this invention is not limited to the Example mentioned above, It can change in the range which does not deviate from the summary of this invention.

1 .... Control unit 2 .... Display unit (notification unit)
3 .... Operation unit 4 .... Current position detection unit 5 .... Map information storage unit 6 ... Running history storage unit 7 ... Battery 8 ... Communication unit 9 ... ..Speaker (notification unit)
10: Mobile information communication device

Claims (5)

In a mobile information communication device that is mounted on a mobile body and transmits / receives information to / from other mobile bodies,
A current position detecting unit for detecting a current position of the moving body;
A communication unit that transmits reverse running information including the current position of the mobile body to the other mobile body, and receives reverse running information including the current position of the other mobile body;
An informing unit for informing the reverse running information of the other moving body received;
When the backward movement of the moving body is detected, the communication unit is controlled to transmit the current position and the backward running information to the other moving body, and the communication unit detects the current position of the other moving body and A control unit that controls the notification unit when the reverse running information is received to notify the reverse running information;
A mobile information communication apparatus comprising:   The mobile unit information communication apparatus according to claim 1, wherein the control unit stops transmission of the reverse running information to the other mobile unit when detecting the reverse running cancellation of the mobile unit. A map information storage unit for storing map information;
The mobile unit information according to claim 1, wherein the control unit specifies a travel road based on the current position and the map information, and includes information on the travel road in the reverse travel information. Communication device.   When the control unit receives the current position and the reverse running information, the control unit determines whether the information is related to the moving body based on the current position and the information on the traveling road. The mobile information communication apparatus according to claim 3, wherein when it is determined that the information is related, the notification unit is controlled to notify the reverse running information.   The control unit calculates a distance to the other moving body based on the current position of the other moving body that has transmitted the reverse running information, and calculates the reverse running information together with the distance to the other moving body. The mobile information communication apparatus according to any one of claims 1 to 4, wherein control for notifying the notifying unit is performed.

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