JP2009003822A - Inter-vehicle communication device - Google Patents

Abstract

【Task】
Providing the driver with necessary information for safe driving by transmitting the travel information of the host vehicle to a vehicle suitable for a suitable scene to other vehicles traveling around the host vehicle Is an issue.
In order to solve the above problems, a plurality of wireless communication means for wirelessly communicating data and wireless communication means mounted on a vehicle traveling in the vicinity are mounted on the vehicle, and the vehicle information control means acquires the traveling Information or a plurality of wireless communication means installed in arbitrary locations of the vehicle, determining the transmission frequency when transmitting transmission information created based on the traveling information to surrounding vehicles according to the traveling state of the host vehicle By operating so as to be set every time, it becomes possible to transmit vehicle travel information or transmission information having a suitable amount of information in a suitable direction.
[Selection] Figure 1

Description

  The present invention relates to a technique for performing vehicle-to-vehicle communication between vehicles using a wireless communication device installed in the vehicle.

  Studies are underway to provide safe driving assistance for drivers by wirelessly communicating data such as driving conditions between vehicles. Regarding this, there are disclosures in Patent Document 1 and Patent Document 2.

  In Patent Document 1, “the mobile body and various situations around it are detected as situation data, and the transmission frequency of the information signal is changed according to the situation data. Therefore, there are many other mobile bodies around the mobile body itself. Even if it exists, it is disclosed about a technique that can efficiently obtain information on other necessary moving bodies.

  Further, in Patent Document 2, in a vehicle communication system, “when reception sensitivity is reduced due to electromagnetic waves caused by storing a plurality of wireless communication devices 1 in a limited space, the wireless communication device 1 Since the communication output can be lowered, the communication environment of the wireless communication device 1 having a high priority can be improved.

JP 2000-311294 A JP 2003-169019 A

  Although Patent Document 1 and Patent Document 2 disclose a communication system for a vehicle, further improvement and improvement of transmission / reception of suitable information depending on the driving situation where the vehicle travels and the travel location. Is necessary. For example, when the vehicle information is low, such as when driving on a highway at a constant speed, turning left and right at intersections, speed reduction when approaching the end of traffic jams, detection of merge vehicles in merge lanes When there is a high need for surrounding vehicle travel information and host vehicle travel information, it may be undesirable to perform uniform processing for communication between vehicles. In that case, for example, congestion due to transmission of data that is not originally necessary or data that is not necessary, or problems that data with high necessity cannot be communicated are expected.

  Moreover, in the said patent document 2, it respond | corresponds to both the road-to-vehicle communication which communicates by radio | wireless with the roadside radio | wireless apparatus installed on a road, and the vehicle-to-vehicle communication which communicates wirelessly between vehicles, The size of the vehicle which drive | works the circumference | surroundings It has been proposed a communication system that determines whether or not a communication failure occurs based on information related to the situation and switches between road-to-vehicle communication and vehicle-to-vehicle communication. However, when the vehicle receives data from the roadside wireless device, the vehicle-to-vehicle communication process for transmitting the travel information to other vehicles is controlled according to the received content, and the vehicle travel information is preferably transmitted to surrounding vehicles. There is no mention of what to send.

  The present invention provides the driver with necessary information for safe driving by transmitting the traveling information of the own vehicle to the traveling location, traveling situation of the own vehicle, or other vehicles traveling in the vicinity. With the goal.

In order to solve the above problems, first, an inter-vehicle communication device according to the present invention includes a plurality of wireless communication means that are installed in a vehicle and that perform wireless data communication and a wireless communication means that is mounted on a vehicle traveling around the vehicle. Vehicle-to-vehicle communication control means for individually controlling communication with respect to a plurality of wireless communication means, display means for displaying data received by the wireless communication means, input means for setting operation of the own apparatus, traveling position, Acquires travel information of the host vehicle including any of speed, acceleration, engine speed, torque, brake operation state, and accelerator opening state, and transmits the acquired travel information or a transmission created based on the travel information. Vehicle information control means for requesting the vehicle-to-vehicle communication control means to transmit information to surrounding vehicles,
The inter-vehicle communication control means determines the transmission frequency when transmitting the travel information acquired by the vehicle information control means or the transmission information created based on the travel information to surrounding vehicles according to the travel status of the host vehicle. In addition, by operating so as to set for each of a plurality of wireless communication means installed in any place of the vehicle, it is possible to transmit vehicle travel information or transmission information with a suitable amount of information in a suitable direction Become.

  In the above, the vehicle information control means requests the vehicle-to-vehicle communication control means to transmit travel information or transmission information to surrounding vehicles. However, the present invention is not limited to this configuration, and the inter-vehicle communication control means may be controlled by a control unit provided in a navigation control unit that performs control processing in the navigation unit equipped with a navigation function or the like.

  Next, the inter-vehicle communication device of the present invention has the same configuration as the above-described inter-vehicle communication device, and the vehicle information control means detects any change of the brake operation of the own vehicle, a decrease in speed, and a decrease in acceleration. Then, the inter-vehicle communication control means operates so as to set the transmission frequency of the traveling information of the own vehicle more for the wireless communication means installed behind the vehicle among the plurality of wireless communication means. It becomes possible to quickly and accurately notify the driver of the rear vehicle that the vehicle traveling ahead is approaching by driving the brake.

  Next, the inter-vehicle communication device of the present invention has the same configuration as the above-described inter-vehicle communication device, and the vehicle information control means changes any of accelerator opening, speed increase, and acceleration increase of the own vehicle. When detected, the vehicle-to-vehicle communication control means operates to set a higher transmission frequency of the traveling information of the host vehicle to the wireless communication means installed in front of the vehicle among the plurality of wireless communication means. Thus, it becomes possible to notify the driver of the vehicle traveling in the front quickly and accurately that the own vehicle traveling in the rear is approaching by driving the accelerator.

Next, the inter-vehicle communication device of the present invention includes a plurality of wireless communication means installed on a vehicle and mounted on a vehicle traveling in the vicinity and wireless communication means for performing data communication wirelessly. Vehicle-to-vehicle communication control means for performing communication control individually, display means for displaying data received by the wireless communication means, input means for setting operation of the own device, travel position, speed, acceleration, brake operating state, It is composed of vehicle information control means for requesting inter-vehicle communication control means to sequentially acquire travel information of the host vehicle including any one of the accelerator opening states and transmit it to surrounding vehicles,
The inter-vehicle communication control means determines the transmission frequency when transmitting the travel information acquired by the vehicle information control means or the transmission information created based on the travel information to surrounding vehicles according to the travel location of the own vehicle. Then, by operating so as to set for each of a plurality of wireless communication means installed in an arbitrary place of the vehicle, the vehicle traveling information or transmission information having a suitable amount of information is transmitted in a suitable direction according to the traveling place. It becomes possible to do.

  Next, the inter-vehicle communication device of the present invention has the same configuration as the above-described inter-vehicle communication device, and when the vehicle information control means detects that the traveling location of the own vehicle is near an intersection, the inter-vehicle communication control means The front of the driver of the vehicle behind the vehicle by operating the wireless communication device installed behind the vehicle among the plurality of wireless communication devices so as to set the transmission frequency of the traveling information of the host vehicle to be high. The travel information of the host vehicle traveling on the vehicle can be notified more quickly and accurately.

Next, the inter-vehicle communication device of the present invention includes a plurality of wireless communication means installed on a vehicle and mounted on a vehicle traveling in the vicinity and wireless communication means for performing data communication wirelessly. Vehicle-to-vehicle communication control means for performing communication control individually, display means for displaying data received by the wireless communication means, input means for setting operation of the own device, travel position, speed, acceleration, brake operating state, It is composed of vehicle information control means for requesting inter-vehicle communication control means to sequentially acquire travel information of the host vehicle including any one of the accelerator opening states and transmit it to surrounding vehicles,
The inter-vehicle communication control means sends the transmission output of a plurality of wireless communication means when transmitting the travel information acquired by the vehicle information control means or the transmission information created based on the travel information to surrounding vehicles. Vehicle driving information that is effective for safe driving in a wider range of vehicles in a suitable direction by operating according to the driving situation and setting for each of a plurality of wireless communication means installed in any place of the vehicle Or transmission information can be transmitted.

Next, the inter-vehicle communication device of the present invention is installed in a vehicle, and is installed on a road with a plurality of wireless communication means mounted on vehicles traveling around and wireless communication means for performing data communication wirelessly. Road-to-vehicle wireless communication means for wirelessly communicating data with a roadside device, a plurality of vehicle-to-vehicle wireless communication means, a road-to-vehicle to vehicle-to-vehicle communication control means for controlling communication with respect to the road-to-vehicle wireless communication means, and vehicle-to-vehicle wireless communication Display means for displaying the data received by the means or road-to-vehicle wireless communication means, input means for setting the operation of the own device, and including the travel position, speed, acceleration, brake operating state, accelerator opening state Vehicle information control means for requesting the road-to-vehicle to vehicle-to-vehicle communication control means to sequentially acquire the travel information of the vehicle and transmit it to surrounding vehicles,
Road-to-vehicle-to-vehicle-to-vehicle communication control means includes data received from the roadside device when the driving information acquired by the vehicle information control means or the transmission frequency when transmitting transmission information created based on the driving information is transmitted to surrounding vehicles. The information is determined according to the content of the vehicle, and is set for each of a plurality of wireless communication means installed in any place of the vehicle. It becomes possible to transmit a quantity of vehicle travel information or transmission information.

  Next, the inter-vehicle communication device of the present invention has the same configuration as the above-described inter-vehicle communication device, and when the data received from the roadside device by the vehicle information control means is information notifying the presence of the merged vehicle, The vehicle-to-vehicle-to-vehicle communication control means operates to set the transmission frequency of the traveling information of the host vehicle to a large number with respect to the wireless communication means installed behind the vehicle among the plurality of wireless communication means. It is possible to more suitably notify the driving information of the host vehicle located in front of the driver of the partial vehicle.

Next, the inter-vehicle communication device of the present invention is equipped with a plurality of wireless communication means installed in a vehicle and mounted on a vehicle traveling in the vicinity and wireless communication means for performing data communication wirelessly. Vehicle-to-vehicle communication control means for recording and individually controlling communication for a plurality of wireless communication means, display means for displaying data received by the wireless communication means, and input means for setting operation of the own apparatus ,
A plurality of wireless communication means are installed in each location of the own vehicle that can wirelessly communicate with each other, and the inter-vehicle communication control means is unique to the own device with respect to one wireless communication means among the plurality of wireless communication means. It is possible to confirm the normal operation of a plurality of wireless communication means by performing control to transmit information and confirming that other wireless communication means receive.

  Further, the inter-vehicle communication device of the present invention has a plurality of wireless communication means for performing data communication with other vehicles wirelessly, and the vehicle-to-vehicle communication control means for individually controlling the communication of each wireless communication means, Display means for displaying and receiving data received by the wireless communication means, input means for inputting operation settings, abnormality information obtaining means for obtaining abnormality information which is information obtained regarding abnormality of the own vehicle, and the abnormality information Or at least control means for controlling the inter-vehicle communication control means so as to transmit the abnormal transmission information created based on the abnormal information from the wireless communication means, and the vehicle of the plurality of wireless communication means Since the transmission frequency of the abnormal information or the abnormal transmission information is changed depending on the installed position in the vehicle, it is possible to more suitably inform the surrounding vehicles of the abnormality of the own vehicle. That.

  Next, the inter-vehicle communication device according to the present invention includes, as the abnormality information, a traveling system including an operating state of the engine, an operating state of a driving force transmission system, an operating state of a cooling system, and a steering system that changes the direction of the vehicle. Based on the information indicating one of the abnormal states of the operating state, it is possible to more suitably notify the surrounding vehicles of the abnormality of the own vehicle.

  Next, when the abnormality information of the own vehicle changes, the inter-vehicle communication device of the present invention changes the transmission frequency of the abnormality information or the abnormality transmission information. It becomes possible to notify suitably.

  According to the present invention, it is possible to provide a device that improves safety more than ever and provides vehicle driving information and the like to a driver.

  Hereinafter, embodiments of the present invention will be described.

  A first embodiment of the inter-vehicle communication device of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing an embodiment of the overall configuration of a vehicle-to-vehicle communication device of the present invention. Reference numeral 100 denotes a navigation unit equipped with a navigation function for guiding the driver to the destination, 101 denotes a navigation control unit for performing control processing of each unit in the navigation unit 100, and 102 denotes voice / image information such as a speaker and a monitor. The output unit 103 is configured to include an input unit for the driver to input settings such as a destination to the navigation unit 100, and a wireless communication control unit 104 to transmit / receive data to / from the inter-vehicle communication unit 200. The

  200 is a vehicle-to-vehicle communication unit that wirelessly communicates vehicle traveling information indicating the traveling state of the vehicle with other vehicles, 201 is installed in front of the vehicle 400 and transmits vehicle traveling information of the host vehicle, and others. The vehicle-to-vehicle wireless communication units a and 202 that receive the vehicle traveling information of the vehicle are antennas a and 203 that are used for wireless data transmission and reception of the vehicle-to-vehicle wireless communication unit a201. The vehicle-to-vehicle wireless communication units b and 204 that transmit and receive vehicle travel information of other vehicles are antennas b and 205 that are used for wireless data transmission / reception of the vehicle-to-vehicle wireless communication unit b203, and controls the units in the vehicle-to-vehicle communication unit 200. It is comprised by the vehicle-to-vehicle communication control part which performs a process.

  In the above description, the wireless communication control unit 104 requests the inter-vehicle communication control unit 205 to transmit traveling information or transmission information created based on the traveling information to surrounding vehicles. However, the present invention is not limited to this configuration, and the inter-vehicle communication control means may be controlled by a control unit provided in a navigation control unit that performs control processing in the navigation unit equipped with a navigation function or the like.

  Reference numeral 300 denotes a vehicle-to-vehicle communication device including the navigation unit 100 and the vehicle-to-vehicle communication unit 200, and 400 denotes a vehicle on which the vehicle-to-vehicle communication device 300 is mounted.

  The navigation control unit 101 performs processing for guiding the driver to the designated destination based on the input information input from the input unit 103. When the driver inputs a destination from the input unit 103, the road information from the current position of the vehicle 400 to the destination is retrieved and the route information of the road on which the vehicle is traveling is displayed on the output unit 102.

  During traveling, the traveling position of the host vehicle is displayed on a map displayed on the output unit 102, and voice traveling guidance information is output to the output unit 102 in order to provide the driver with route guidance to the destination. Further, the vehicle travel information of other vehicles received via the wireless communication control unit 104 is analyzed and displayed on the output unit 102.

  The output unit 102 performs display of various information such as map information and road congestion information output from the navigation control unit 101 and route guidance output from the navigation control unit 101 under the control of the navigation control unit 101. It is comprised with the speaker etc. which output the audio | voice information. Of course, these devices are not limited to devices and devices that display images, and devices and devices that output audio information. Other devices and devices that provide information to drivers, drivers, and operators. There may be. For example, it may be a vibration device or apparatus that notifies attention and warning information by vibration.

  The input unit 103 is an operation unit for inputting various information necessary for the driver to set a destination as a destination of the vehicle 400 and a predetermined processing operation request to the navigation unit 100. The input unit 103 is an input operation panel ( Keyboard, touch panel input, etc.). Various information input by the driver through the input unit 103 is output to the navigation control unit 101. Of course, it is not limited to devices and devices used as these input operation panels, devices and devices that output audio information, according to changes in driver, driver, operator's intention, action, biological information, Other devices and apparatuses that are operated and input may be used. For example, detection of biometric information including detection of gaze, eyeball movement, detection of face, head orientation, tilt, angle, rotation, movement, etc., pulse, blood pressure, etc. enables input It may be a device or an apparatus.

  The wireless communication control unit 104 is an interface unit for inputting / outputting data such as vehicle travel information of the own vehicle and vehicle travel information of other vehicles traveling around the vehicle and command information to / from the inter-vehicle communication unit 200.

  The host vehicle refers to the vehicle 400, and the other vehicle refers to a vehicle that travels around the vehicle 400.

  FIG. 2 is a diagram illustrating an example of an internal configuration of the navigation control unit 101. Reference numeral 1011 denotes an acceleration sensor for detecting a vehicle speed, and 1012 denotes a GPS (Global Positioning System) for acquiring vehicle location and position information. 1013 is a gyro that detects the traveling direction of the vehicle, 1014 is a map information recording unit that records map information for displaying the current location and destination, and 1015 is a vehicle information acquisition unit that acquires vehicle traveling information related to the traveling state, Reference numeral 1016 denotes an other vehicle travel information storage unit that stores vehicle travel information related to a travel state received from another vehicle, and 1017 denotes a control unit that controls the navigation unit 100.

  The acceleration sensor 1011 detects the vehicle speed of the vehicle 400 and outputs an electric signal indicating the detected vehicle speed to the control unit 1017.

  The GPS 1012 obtains current position information of the vehicle 400 by communicating with a plurality of GPS satellites, and outputs the obtained current position information of the vehicle 400 to the control unit 1017.

  The gyro 1013 detects the traveling direction of the vehicle 400 and outputs the detected traveling direction information of the vehicle 400 to the control unit 1017.

  The map information recording unit 1014 records map information for displaying the current position of the vehicle 400 and the destination of the vehicle 400 on the output unit 102 under the control of the control unit 1017. The map information recording unit 1014 outputs the specified map information in response to a request from the control unit 1017.

  The vehicle information acquisition unit 1015 acquires and outputs the operation state of the vehicle 400 such as travel speed, engine speed, torque, brake, and accelerator state according to a request from the control unit 1017. An example of specific vehicle travel information is shown in FIG.

  The control unit 1017 performs various processes described later in response to various information input from the input unit 103 and requests. While traveling, the vehicle speed detection signal from the acceleration sensor 1011, the current position information of the vehicle 400 from the GPS 1012, and the traveling direction information of the vehicle 400 from the gyro 1013 are acquired, and the map information recorded in the map information recording unit 1014 The map information around the travel location of the host vehicle is read out from the list, and the travel location of the host vehicle is displayed on the output unit 102. Further, the engine speed and torque may be obtained based on a control signal processed in the engine control system or a detection signal detected in the control.

  When the driver inputs the destination from the input unit 103 and sets the request for navigation driving to guide the driving to the destination, the driving route from the current position to the destination is calculated and the destination is determined according to the designated route. Guidance processing is performed by sound and image output to the ground. In addition, the vehicle-to-vehicle communication unit 200 analyzes vehicle travel information received from another vehicle, and outputs information on the vehicle traveling in the vicinity to the output unit 102.

  FIG. 3 is a diagram illustrating an example of the internal configuration of the vehicle-to-vehicle wireless communication unit a201. 2011 is a transmission unit that performs data transmission processing in response to a request from the communication processing unit 2015, 2012 is a reception unit that receives data from the antenna a202, and 2013 is a switch for switching between transmission processing and reception processing.

  2014 is a communication control unit that controls the inter-vehicle wireless communication unit a201, 2015 is a switch processing of the switch 2013, and a communication processing unit that performs data input and output with the transmission unit 2011, the reception unit 2012, and the inter-vehicle communication control unit 205, 2016 is a vehicle data detection unit that determines whether the reception data acquired by the communication processing unit 2015 from the reception unit 2012 is data transmitted from the host vehicle, and 2017 is a vehicle data detection unit 2016 that receives the received data from the host vehicle. The vehicle ID storage unit stores the vehicle ID used to determine whether the data is transmitted from the vehicle.

  FIG. 4 is a diagram illustrating an example of the internal configuration of the vehicle-to-vehicle wireless communication unit b203. Reference numeral 2031 denotes a transmission unit that performs data transmission processing in response to a request from the communication processing unit 2035, 2032 denotes a reception unit that receives data from the antenna b204, and 2033 denotes a switch for switching between transmission processing and reception processing.

  2034 is a communication control unit that controls the vehicle-to-vehicle wireless communication unit b203, 2035 is a switch 2033 switching process, a transmission unit 2031, a reception unit 2032, a communication processing unit that performs data input / output with the vehicle-to-vehicle communication control unit 205, Reference numeral 2036 denotes a host vehicle data detection unit that determines whether or not the reception data acquired by the communication processing unit 2035 from the receiver unit 2032 is data transmitted from the host vehicle. Reference numeral 2037 denotes a host vehicle data detection unit 2036 that receives the received data from the host vehicle. The vehicle ID storage unit stores the vehicle ID used to determine whether the data is transmitted from the vehicle. The vehicle-to-vehicle wireless communication unit b203 is configured with the same function and the same part as the vehicle-to-vehicle wireless communication unit a201, and each part performs the same processing.

  When receiving a data transmission request from the inter-vehicle communication control unit 205, the communication processing unit 2015 checks the usage status of the surrounding wireless transmission channels, and sets the transmission data to the transmission unit 2011 when not in use. Data is transmitted by switching 2013 to the transmission unit 2011 side. If it is used, transmission is waited to avoid collision of transmission data, and transmission processing is performed after detecting that the transmission has not been used.

  This wireless communication access control method is called a CSMA / CA (Carrier Sense Multiple Access with Collision Avoidance) method, and is standardized by IEEE 802.11 as an access control method in the MAC layer of a wireless LAN. When the transmission process is completed, the switch 2013 switches to the receiving unit 2012 side.

  Further, when data is received at the receiving unit 2012, the received data is acquired from the receiving unit 2012, and a determination request is made to the own vehicle data detecting unit 2016 to determine whether the acquired received data is data transmitted from the own vehicle. . If the determination result is the transmission data of the own vehicle, the determination result is discarded. Otherwise, the determination result is transmitted to the inter-vehicle communication control unit 205.

  FIG. 5 is a diagram illustrating an example of an internal configuration of the inter-vehicle communication control unit 205. 2051 is a navigation interface unit for inputting / outputting data to / from the wireless communication control unit 104 of the navigation unit 100, 2055 is an input / output of data to / from the inter-vehicle wireless communication unit a201, the inter-vehicle wireless communication unit b203, and the navigation unit 100. A communication control processing unit that performs control processing, 2053 from a transmission data storage unit that temporarily stores transmission data requested from the navigation unit 100, and 2054 from a vehicle-to-vehicle wireless communication unit a201 and a vehicle-to-vehicle wireless communication unit b203. A received data storage unit that temporarily stores received data, and 2055 is an inter-vehicle communication that inputs and outputs data between the communication control processing unit 2052, the inter-vehicle wireless communication unit a201, and the inter-vehicle wireless communication unit b203. The interface unit 2056 is predetermined in order to identify the host vehicle. A host vehicle ID storage unit for storing car ID.

  FIG. 6 is a table showing an example of the contents of vehicle travel information wirelessly communicated between vehicles. As data elements, the own vehicle ID which is a number for identifying the own vehicle, the partner vehicle ID set when transmitting to the specific vehicle, the vehicle type indicating the type of the own vehicle, and the location where the own vehicle is traveling Latitude, longitude, altitude, vehicle speed indicating the traveling speed of the host vehicle, acceleration indicating the traveling acceleration of the host vehicle, direction indicating the traveling direction of the host vehicle, brake indicating the use state of the brake, accelerator indicating the use state of the accelerator There is. In FIG. 6, the contents of the brake and accelerator are “ON: OFF”, but the information is not limited to the binary information, and the data amount is gradually increased according to the use state of the brake and accelerator. May be used as information indicating. When the navigation control unit 101 acquires the vehicle travel information, the navigation control unit 101 converts it into the format shown in FIG.

  FIG. 7 is a vehicle traveling diagram showing an embodiment of a communication area when the vehicle 400 performs wireless communication with surrounding vehicles.

  The vehicle A401 is a vehicle that travels behind the same lane of the vehicle 400, the vehicle B402 is a vehicle that travels behind the opposite lane of the vehicle 400, and the vehicle C403 is a vehicle that travels laterally opposite the vehicle 400, D404 is a vehicle that travels in front of the same lane of the vehicle 400, and a road 500 indicates a road on which each vehicle travels.

  The common communication area 600 indicates an area where both the vehicle-to-vehicle wireless communication unit a201 and the vehicle-to-vehicle wireless communication unit b203 mounted on the vehicle 400 can communicate.

  A communication area a601 is an area in which the vehicle-to-vehicle wireless communication unit a201 mounted on the vehicle 400 can communicate, and an area in which the vehicle-to-vehicle wireless communication unit b203 cannot communicate.

  The communication area b602 indicates an area where the inter-vehicle wireless communication unit a201 mounted on the vehicle 400 cannot communicate, but the inter-vehicle wireless communication part b203 can communicate.

  The vehicle C403 can communicate with both the vehicle-to-vehicle wireless communication unit a201 and the vehicle-to-vehicle wireless communication unit b203 mounted on the vehicle 400.

  On the other hand, the vehicle A401 cannot communicate with both the vehicle-to-vehicle wireless communication unit a201 and the vehicle-to-vehicle wireless communication unit b203 of the vehicle 400.

  Further, the vehicle B402 can communicate only with the vehicle-to-vehicle wireless communication unit a201 of the vehicle 400, and the vehicle D404 can communicate with only the vehicle-to-vehicle wireless communication unit b203 of the vehicle 400.

  FIG. 8 is a block diagram showing a case where the vehicle travel information transmitted from the vehicle-to-vehicle wireless communication unit a201 in the vehicle 400 is received by the vehicle-to-vehicle wireless communication unit b203 of the host vehicle.

  FIG. 9 is a sequence diagram showing the processing contents when the self-diagnosis processing of the inter-vehicle communication unit 200 is performed.

  Next, in the vehicle-to-vehicle communication device according to the embodiment of the present invention, the operation when the vehicle-to-vehicle communication unit 200 performs the self-diagnosis process will be described with reference to FIGS. 1, 2, 3, 4, 5, 6, and 6. This will be described with reference to FIGS. 7, 8, and 9.

  When the vehicle-to-vehicle communication device 300 is activated as shown in the sequence diagram of FIG. 9, the communication control processing unit 2052 shown in FIG. 5 acquires vehicle ID information from the vehicle ID storage unit 2056, and via the vehicle-to-vehicle communication interface unit 2055. It transmits to the vehicle-to-vehicle wireless communication part a201 (S901).

  In response to this, the communication processing unit 2015 of the vehicle-to-vehicle wireless communication unit a201 shown in FIG. 3 stores the vehicle ID in the vehicle ID storage unit 2017 (S902). Similarly, the communication control processing unit 2052 illustrated in FIG. 5 transmits the vehicle ID to the vehicle-to-vehicle wireless communication unit b203 illustrated in FIG. 1 via the vehicle-to-vehicle communication interface unit 2055 (S903).

  In response to this, the communication processing unit 2035 of the vehicle-to-vehicle wireless communication unit b203 shown in FIG. 4 stores the vehicle ID in the vehicle ID storage unit 2037 (S904). Next, the vehicle-to-vehicle communication control unit 205 sends a transmission request for the vehicle ID information to the vehicle-to-vehicle wireless communication unit a201 shown in FIG. 3 (S905). In response to this, the communication processing unit 2015 of the vehicle-to-vehicle wireless communication unit a201 acquires the vehicle ID from the vehicle ID storage unit 2017, switches the switch 2013 to the transmission unit 2011 side, and the vehicle ID data is shown in FIG. The vehicle travel information data format is set, output to the transmission unit 2011, and transmitted via the antenna a202 (S906).

  As shown in FIG. 7, the vehicle wireless communication unit a <b> 201 and the vehicle wireless communication unit b <b> 203 of the vehicle 400 are located in the communicable area and receive the data transmitted from each other. Therefore, the vehicle travel information data transmitted by the vehicle wireless communication unit b203 is received by the receiving unit 2032 via the antenna b204 shown in FIG. 4 (S907). When the communication processing unit 2035 acquires the reception data from the reception unit 2032, the communication processing unit 2035 issues a vehicle determination detection request to the vehicle data detection unit 2036 so as to determine whether or not the reception data is data transmitted from the vehicle (S 908). ).

  The own vehicle data detection unit 2036 extracts the own vehicle ID from the received vehicle travel information data, compares it with the own vehicle ID data recorded in the own vehicle ID storage unit 2037, and if the same, the received data is from the own vehicle. Is notified to the communication processing unit 2035. In response to this, the communication processing unit 2035 transmits a vehicle ID reception notification to the inter-vehicle communication control unit 205 (S909). If the received data is not transmitted data from the host vehicle, the received data is discarded (S910). However, in the case of vehicle travel information from another vehicle, the reception process described in the second and subsequent embodiments is performed.

  When the vehicle-to-vehicle communication control unit 205 shown in FIG. 4 receives the vehicle ID reception notification, the vehicle-to-vehicle wireless communication unit b203 makes a transmission request for the vehicle ID information (S911). In response to this, the communication processing unit 2035 of the vehicle-to-vehicle wireless communication unit b203 acquires the vehicle ID from the vehicle ID storage unit 2037, switches the switch 2031 to the transmission unit 2031 side, and the vehicle ID data is shown in FIG. The vehicle travel information data format is set, output to the transmitter 2031 and transmitted via the antenna b204 (S912). The vehicle travel information data transmitted by the vehicle radio communication unit b203 shown in FIG. 1 is received by the receiving unit 2012 via the antenna a202 (S913).

  When the communication processing unit 2015 of the vehicle-to-vehicle wireless communication unit a201 shown in FIG. 3 acquires the received data from the receiving unit 2012, the communication processing unit 2015 outputs the received data to the own vehicle data detecting unit 2016, and whether or not the received data is data transmitted from the own vehicle. The vehicle determination detection request is made so as to determine (S914). The own vehicle data detection unit 2016 extracts the own vehicle ID from the vehicle travel information data received from the communication processing unit 2015, and collates it with the own vehicle ID data recorded in the own vehicle ID storage unit 2017. The communication processing unit 2015 is notified that the data is transmitted from the vehicle.

  In response to this, the communication processing unit 2015 transmits a vehicle ID reception notification to the inter-vehicle communication control unit 205 (S915). If the received data is not data transmitted from the host vehicle, the received data is discarded (S916). However, in the case of vehicle travel information from another vehicle, the reception process described in the second and subsequent embodiments is performed.

  When the vehicle-to-vehicle communication control unit 205 shown in FIG. 1 receives the vehicle ID reception notification, the vehicle-to-vehicle wireless communication unit a201 and the vehicle-to-vehicle wireless communication unit b203 installed in the vehicle confirm that they are in a communicable state. The self-diagnosis success notification is transmitted to the navigation unit 100 (S917). In response to this, the navigation unit 100 displays on the output unit 102 a successful self-diagnosis.

  On the other hand, when the vehicle-to-vehicle communication control unit 205 makes a request for transmitting the vehicle ID to the vehicle-to-vehicle wireless communication unit a201 or the vehicle-to-vehicle wireless communication unit b203, a reception notification of the vehicle ID is not returned within a certain time. A self-diagnosis error notification is transmitted to the navigation unit 100. In response to this, the navigation unit 100 displays on the output unit 102 a failure indicating self-diagnosis.

  As described above, by confirming transmission / reception of the vehicle ID using a plurality of vehicle-to-vehicle wireless communication units installed in the vehicle 400, it is possible to perform a failure diagnosis of the vehicle-to-vehicle wireless communication unit.

  In addition, the self-diagnosis process of the vehicle-to-vehicle wireless communication unit described in the present embodiment may be performed periodically at regular intervals, or may be performed once after the vehicle-to-vehicle communication device 300 is activated.

  In this embodiment, the vehicle-to-vehicle wireless communication unit a201 and the vehicle-to-vehicle wireless communication unit b203 each acquire the vehicle ID from the vehicle-to-vehicle communication control unit 205 that holds the vehicle ID in advance, and the vehicle ID is obtained. Although the storage unit 2017 and the own vehicle ID storage unit 2037 are recorded, the own vehicle ID may be held in advance by the inter-vehicle wireless communication unit a201 and the inter-vehicle wireless communication unit b203, respectively.

  A second embodiment of the inter-vehicle communication device of the present invention will be described with reference to the drawings.

  FIG. 10 is a block diagram illustrating a receiving operation of the vehicle travel information transmitted from the vehicle C403 by the vehicle 400.

  FIG. 11 is a vehicle travel diagram illustrating a communication area when the vehicle 400 performs wireless communication with surrounding vehicles when a vehicle traveling in front operates a brake.

  The vehicle E405 is a vehicle that travels further ahead of the vehicle D404, the vehicle F406 is also a vehicle that travels in front of the vehicle E405, the vehicle G407 is also a vehicle that travels in front of the vehicle F406, and the vehicle H408 is The vehicle travels further behind the vehicle A401. The point a 1101 is a point where the host vehicle 400 is traveling, and the point b 1102 is a point where the vehicle A401 is traveling.

  FIG. 12 is a processing sequence diagram in which the navigation control unit 101 transmits / receives vehicle travel information to / from other vehicles through inter-vehicle communication.

  FIG. 13 is a processing sequence diagram for updating the vehicle travel information of the host vehicle transmitted by the navigation control unit 101 through inter-vehicle communication.

  FIG. 14 is a sequence diagram when the navigation control unit 101 analyzes and displays the vehicle travel information of another vehicle received by inter-vehicle communication.

  FIG. 15 is a control processing sequence diagram of the vehicle-to-vehicle communication control unit 205. The vehicle travel information update notification processing from the navigation unit 100, vehicle travel information transmission cycle setting processing, vehicle travel information transmission request processing, A vehicle travel information reception process from the inter-vehicle wireless communication unit is performed.

  FIG. 16 is a sequence diagram showing details of the vehicle travel information reception process of the inter-vehicle communication control unit 205.

  FIG. 17 shows a vehicle travel information transmission cycle determination table for setting a cycle in which the vehicle-to-vehicle communication control unit 205 requests the vehicle-to-vehicle wireless communication unit to transmit the vehicle travel information of the vehicle according to the vehicle travel state of the vehicle. a. The navigation control unit 101 sets the transmission period of the vehicle travel information of the own vehicle in the inter-vehicle communication control unit 205 according to the contents of this table.

  FIG. 18 is a diagram illustrating an embodiment in the case where the navigation control unit 101 receives vehicle travel information from another vehicle and displays the content on the display of the output unit 102.

  FIG. 19 shows an example of the contents recorded in the other vehicle travel information storage unit 1016 when the navigation control unit 101 receives vehicle travel information from another vehicle.

  FIG. 20 is a vehicle travel diagram illustrating a communication area when the vehicle 400 performs wireless communication with surrounding vehicles when a vehicle traveling in front operates a brake. Although it is the same structure as FIG. 11, the communicable area | region is a wide area.

  Next, in the vehicle-to-vehicle communication device according to the embodiment of the present invention, FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 6, FIG. 7, FIG. 10, FIG. 11, FIG. 12, FIG. 13, FIG. 14, FIG. 15, FIG.

  An operation in a case where the inter-vehicle communication device 300 mounted on the vehicle 400 transmits / receives vehicle traveling information to / from other vehicles located in the vicinity will be described.

  In the navigation unit 100, the navigation control unit 101 performs processing for acquiring vehicle travel information of the host vehicle that is transmitted to other vehicles traveling in the vicinity, and processing for analyzing and displaying vehicle travel information received from other vehicles.

  When the navigation control unit 101 shown in FIG. 1 receives a notification from the wireless communication control unit 104 that the inter-vehicle communication unit 200 has received the vehicle travel information of another vehicle (S1201), the navigation control unit 101 performs a vehicle travel information reception process (S1202). .

  The received vehicle travel information of the other vehicle is stored in the other vehicle travel information storage unit 1016 shown in FIG. 2 (S1401), and the position from the host vehicle is calculated from the position information (longitude, latitude) (S1402). If the distance from the own vehicle is within a certain range (S1403), it is determined from the already received data stored in the other vehicle travel information storage unit 1016 whether the data is already received from the own vehicle ID of the received vehicle travel information. (S1404).

  In the case of data from an unreceived vehicle, the location of the vehicle is specified, and as shown in FIG. 18, a map image displaying the other vehicle mark together with the own vehicle mark is displayed on the output unit 102 (S1405).

  On the other hand, in the case of data from a previously received vehicle, it is compared with the previously received data, and if it has been updated (S1406), the corresponding vehicle position is specified according to the updated content, and the other vehicle mark is also indicated together with the own vehicle mark. Is displayed on the output unit 102 (S1407). If it has not been updated, the process ends.

  In addition, the navigation control unit 101 illustrated in FIG. 1 activates the own vehicle travel information update cycle timer in order to periodically acquire the vehicle travel information of the host vehicle after the inter-vehicle communication device 300 is activated. When the timer expires (S1203), vehicle travel information update processing is started (S1204).

  When the controller 1017 shown in FIG. 2 acquires vehicle travel information from the vehicle information acquisition unit 1015 (S1301), the controller 1017 determines whether the acquired vehicle travel information has changed from the previously acquired content (S1302). Transmits the vehicle travel information and the update notification to the inter-vehicle communication control unit 205 via the wireless communication control unit 104 (S1303).

  Further, from the updated contents of the vehicle travel information, it is determined whether to update the own vehicle travel information transmission cycle with reference to the own vehicle travel information transmission cycle determination table a shown in FIG. 17 (S1304). A vehicle travel information transmission cycle update request is transmitted to the inter-vehicle communication control unit 205 (S1305). Thereafter, the host vehicle travel information update cycle timer is started again (S1306), and the same processing is repeated when the timer ends.

  Next, the operation of the inter-vehicle communication unit 200 shown in FIG. 1 will be described. The vehicle-to-vehicle communication control unit 205 periodically makes a transmission request for the vehicle travel information of the host vehicle to the vehicle-to-vehicle wireless communication unit a201 or the vehicle-to-vehicle wireless communication unit b203.

  In order to prevent the transmission data from each vehicle-to-vehicle wireless communication unit from colliding, transmission control is performed by changing the timing of transmitting data from the vehicle-to-vehicle wireless communication unit a201 and the timing of transmitting from the vehicle-to-vehicle wireless communication unit b203. . For this reason, the vehicle-to-vehicle communication control unit 205 generates the vehicle transmission information transmission cycle timer a for generating data transmission timing from the vehicle-to-vehicle wireless communication unit a201 and the vehicle for generating data transmission timing from the vehicle-to-vehicle wireless communication unit b203. The travel information transmission cycle timer b is started separately, and a transmission request process is performed each time each timer ends.

  On the other hand, when the vehicle-to-vehicle communication control unit 205 receives a reception notification of vehicle travel information of another vehicle from the vehicle-to-vehicle wireless communication unit a201 or the vehicle-to-vehicle wireless communication unit b203 (S1501), it performs a data reception process (S1502). When data reception of vehicle travel information is confirmed (S1601), it is confirmed whether the data has already been received (S1602). If it has been received, the data is discarded (S1603), and the data reception process is terminated.

  In the case of unreceived data, the vehicle travel information received via the navigation interface unit 2051 is transmitted to the navigation unit 100 shown in FIG. 5 (S1604). When the vehicle 400 and the vehicle C403 are located in the common communication area 600 of the vehicle-to-vehicle wireless communication unit a201 and the vehicle-to-vehicle wireless communication unit b203 as shown in FIG. 7, the vehicle travel information transmitted from the vehicle C400 as shown in FIG. The vehicle-to-vehicle wireless communication unit a201 and the vehicle-to-vehicle wireless communication unit b203 receive the signals via the antenna a202 and the antenna b204 of the vehicle 400. Therefore, the vehicle-to-vehicle communication control unit 205 performs a duplicate inspection process for the received data, and performs a process for discarding the received data if detected. By this processing, it is possible to prevent unnecessary data reception processing from being performed in the navigation unit 100.

  When the inter-vehicle communication control unit 205 receives an update notification of the vehicle travel information of the host vehicle from the navigation unit 100 (S1503), the vehicle travel information is set in the transmission data storage unit 2053 (S1504).

  On the other hand, when it is detected that the host vehicle travel information transmission cycle timer set by the inter-vehicle communication control unit 205 has ended (S1505), it is determined whether the host vehicle travel information transmission cycle timer a or the host vehicle travel information transmission cycle timer b. Then, the vehicle travel information of the host vehicle stored in the transmission data storage unit 2053 is transmitted to the corresponding inter-vehicle wireless communication unit (S1507) (S1508). The inter-vehicle wireless communication unit that has acquired the transmission data transmits data to a vehicle traveling in the vicinity according to the procedure described above. Thereafter, the inter-vehicle communication control unit 205 restarts the ended timer (S1509) (S1510).

  When the vehicle-to-vehicle communication control unit 205 shown in FIG. 1 receives the own vehicle travel information transmission cycle update request from the navigation unit 100 (S1511), it updates the transmission cycle to the vehicle-to-vehicle wireless communication unit a201 or the vehicle-to-vehicle wireless communication. It is determined whether the transmission cycle is updated to the part b203 (S1512), and the corresponding host vehicle travel information transmission cycle timer is reset (S1513) (S1514).

  Next, the operation when the vehicle 400 operates the brake will be described with reference to FIG.

  It is assumed that the vehicle 400 initially travels at a speed of 60 km / h and transmits its own vehicle traveling information from the inter-vehicle wireless communication unit a201 and the inter-vehicle wireless communication unit b203 at a cycle of 0.5 seconds. Thereafter, the vehicle 400 travels in an area where it can communicate with the vehicle D404 traveling in front of the same lane and the vehicle A401 traveling behind the same lane. Next, a traffic jam occurs at a place where the preceding vehicle E405, vehicle F406, and vehicle G407 travel, whereby the vehicle D404 operates the brake, and as a result, the vehicle 400 operates the brake at the point a 1101.

  The control unit 1017 of the navigation control unit 101 shown in FIG. 2 confirms that the vehicle travel information acquired from the vehicle information acquisition unit 1015 has decelerated to a range of 0-49 km / h, and the acceleration has become -b or less. When detected, the own vehicle travel information transmission cycle determination table a in FIG. 17 sets the own vehicle travel information transmission cycle timer a of the vehicle-to-vehicle wireless communication unit a (forward direction of the host vehicle) to 1.0 second, The inter-vehicle communication control unit 205 is requested to set the own vehicle travel information transmission cycle timer b for b (rearward of the own vehicle) to 0.2 seconds.

  In response to this, the inter-vehicle communication control unit 205 changes the transmission cycle to a predetermined value. As a result, a large number of driving conditions of the host vehicle are notified per unit time to the rear vehicle A401, and safe driving assistance is provided by notifying the driver of the vehicle A401 of the driving condition of the preceding vehicle in more detail. It becomes possible.

  In FIG. 17, the operating state of the brake and the accelerator is “ON: OFF”, but is not limited to the binary information. For example, according to the use state of the brake and the accelerator, information indicating the data amount in a stepwise manner is used, and FIG. 17 is changed to a cycle in which the transmission cycle is changed corresponding to the stepwise data amount. May be.

  In this embodiment, the notification accuracy of the driving situation is improved by changing the transmission cycle of the vehicle driving information of the own vehicle according to the driving state of the own vehicle. However, as shown in FIG. By increasing the transmission output for transmitting data from the transmission unit of each inter-vehicle wireless communication unit, the communication area that can be transmitted may be expanded, and more vehicles in the vicinity may be notified of the running state of the vehicle. When FIG. 11 is compared with FIG. 20, the communication area of the communication area a601 in FIG. 20 is illustrated as a wider range than the communication area of the communication area a601 in FIG. Similarly, the common communication area 600 and the communication area b 602 are also illustrated as having a wider communication area in FIG. 20 than in FIG.

  Further, in the present embodiment, when the vehicle 400 transmits the vehicle travel information, broadcast communication may be performed for all unspecified peripheral vehicles existing in the communication area, and may be transmitted to the specific vehicle. Therefore, the partner vehicle ID may be set in the vehicle travel information and individual communication may be performed.

  Further, in this embodiment, as shown in FIGS. 11 and 20, when the brake is operated during traveling of the host vehicle, a large number of driving states of the host vehicle are notified per unit time to the rear vehicle A401. However, when the speed and acceleration of the host vehicle rise, such as when the accelerator is driven, the driver of the vehicle D404 is You may make it notify in detail the driving | running | working state of a vehicle.

  A third embodiment of the inter-vehicle communication apparatus which is an embodiment of the present invention will be described with reference to the drawings.

  FIG. 21 is a vehicle travel diagram for explaining an operation for setting the transmission cycle of the vehicle travel information of the host vehicle set in the inter-vehicle communication control unit 205 by the navigation control unit 101 according to the travel location.

  The s point 2101 is a point that is already a traveling place, the t point 2102 is a point that is the current traveling place, the u point 2103 is a point that passes when turning left after passing the t point, and the v point 2104 is a t point. It is a point that passes when it goes straight after passing, w point 2105 is a point that passes when it turns right after passing t point, and vehicle L2106 is a vehicle that travels on the opposite lane when vehicle 400 turns left at the intersection The vehicle M2107 is a vehicle that travels in the opposite lane near the intersection, and the vehicle N2108 is a vehicle that travels in the opposite lane when the vehicle 400 makes a right turn at the intersection.

  FIG. 22 shows host vehicle travel information for setting a cycle in which the vehicle-to-vehicle communication control unit 205 requests transmission of vehicle travel information of the host vehicle to each vehicle-to-vehicle wireless communication unit according to the travel location and travel speed of the host vehicle. It is a transmission cycle determination table b. The navigation control unit 101 sets the transmission period of the vehicle travel information of the own vehicle in the inter-vehicle communication control unit 205 according to the contents of this table.

  FIG. 23 is a sequence diagram when the navigation control unit 101 transmits / receives vehicle travel information to / from another vehicle through inter-vehicle communication.

  FIG. 24 is a sequence diagram in a case where the vehicle travel information of the host vehicle transmitted by the navigation control unit 101 through inter-vehicle communication is updated.

  Next, in the inter-vehicle communication apparatus according to the embodiment of the present invention, FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, and FIG. 14, FIG. 15, FIG. 16, FIG. 21, FIG. 22, FIG. 23, and FIG.

  An operation in a case where the inter-vehicle communication device 300 mounted on the vehicle 400 transmits / receives vehicle traveling information to / from other vehicles located in the vicinity will be described.

  First, the operation of the navigation unit 100 will be described. The navigation control unit 101 performs the same operation as the vehicle-to-vehicle communication device 300 described in the second embodiment with respect to the vehicle travel information reception process from another vehicle and the vehicle travel information update process of the host vehicle.

  Further, the navigation control unit 101 shown in FIG. 2 has the own vehicle travel information transmission period determination table shown in FIG. 22 based on the own vehicle travel location acquired from the information of the acceleration sensor 1011, the GPS 1012, the gyro 1013, and the map information recording unit 1014. In the case of the travel location reset transmission place set in b (S2301), the travel speed of the host vehicle is acquired from the vehicle information acquisition unit 1015 (S2302), and the host vehicle travel information is acquired from the host vehicle travel information transmission cycle determination table b. It is determined whether or not the transmission cycle is to be updated (S2303), and in the case of updating, the own vehicle travel information transmission cycle update request is transmitted to the inter-vehicle communication control unit 205 according to the setting of the own vehicle travel information transmission cycle determination table b. (S2304).

  The operation of the vehicle-to-vehicle communication control unit 205 is the same as that of the vehicle-to-vehicle communication device 300 described in the second embodiment.

  Next, an operation when the vehicle 400 travels an intersection will be described.

  In FIG. 21, when the vehicle 400 passes through the s point 2101 at 60 km / h, the navigation control unit 101 obtains the own vehicle travel information from the own vehicle travel information transmission cycle determination table b, and the inter-vehicle wireless communication unit a201 and the inter-vehicle wireless communication. The vehicle-to-vehicle communication control unit 205 is set to transmit from the unit b 203 at a cycle of 0.5 seconds.

  Further, when approaching the intersection and passing through the point t 2102 at 30 km / h, the navigation control unit 101 transmits the own vehicle travel information from the own vehicle travel information transmission cycle determination table b to the 1.0 second cycle from the inter-vehicle wireless communication unit a201. In addition, the inter-vehicle wireless communication unit b203 is set in the inter-vehicle communication control unit 205 so as to transmit at a cycle of 0.2 seconds.

  In response to this, the inter-vehicle communication control unit 205 changes the transmission cycle. Thereafter, when the vehicle 400 passes through the u point 2103 when traveling left, the v point 2104 when traveling straight, and the w point 2105 when traveling right at 60 km / h, the navigation control unit 101 transmits the own vehicle travel information transmission cycle. The vehicle-to-vehicle communication control unit 205 is set to transmit the own vehicle travel information from the determination table b from the vehicle-to-vehicle wireless communication unit a201 and the vehicle-to-vehicle wireless communication unit b203 at a cycle of 0.5 seconds.

  As described above, when the vehicle 400 approaches the intersection, the vehicle 400 transmits a large number of vehicle travel information of the own vehicle per unit time to the vehicle behind, thereby notifying the driver of the vehicle of the travel state of the front vehicle in more detail. It becomes possible to provide information for safe driving.

  In the present embodiment, the transmission cycle of the host vehicle travel information is determined in consideration of only the conditions of the host vehicle travel information transmission cycle determination table b in FIG. 22, but FIG. 17 used in the second embodiment is used. You may make it determine the transmission period of the own vehicle running information on the conditions combined with the own vehicle running information transmission period determination table a.

  In the present embodiment, the transmission cycle reset travel location set in the own vehicle travel information transmission cycle determination table b is a location near an intersection, but the vehicle travels such as a traffic jam location, a T-junction, or a junction lane. You may set the place where the situation changes easily.

  A fourth embodiment of the inter-vehicle communication apparatus which is an embodiment of the present invention will be described with reference to the drawings.

  FIG. 25 is a diagram showing an embodiment of the overall configuration of the inter-vehicle communication device of the present invention. The navigation unit 100 has the same configuration as the inter-vehicle communication unit 200 of FIG. In addition to the functions described in FIG. 1, the navigation control unit 101 has a function of acquiring road travel information received from the roadside vehicle by the road-to-vehicle-to-vehicle communication unit 700 and displaying voice and image information from the output unit 102. .

  Reference numeral 700 denotes a road running that indicates the running situation of a surrounding road between a vehicle-to-vehicle communication function that wirelessly communicates vehicle running information that indicates the running situation of the vehicle with another vehicle, and a roadside device installed on the road. 1 is a road-vehicle-to-vehicle-to-vehicle communication unit that has both functions of a road-to-vehicle communication function for wirelessly communicating information. The vehicle-to-vehicle wireless communication unit a201, the antenna a202, the vehicle-to-vehicle wireless communication unit b203, and the antenna b204 are shown in FIG. The vehicle-to-vehicle communication unit 200 has the same function as the vehicle-to-vehicle communication unit 200, 250 is a road-to-vehicle wireless communication unit that wirelessly transmits and receives road travel information, and 260 is a road-to-vehicle to vehicle-to-vehicle communication that performs control processing of each unit in the road-to-vehicle communication system The control unit 270 includes a roadside antenna c used for transmission / reception of the road-to-vehicle wireless communication unit 250. Reference numeral 301 denotes a vehicle-to-vehicle communication device on which the navigation unit 100 and the road-to-vehicle-to-vehicle communication unit 700 are mounted, and 800 denotes a vehicle on which the vehicle-to-vehicle communication device 301 is mounted.

  FIG. 26 is a diagram illustrating an example of an internal configuration of the road-vehicle wireless communication unit 250. 2501 is a transmission unit that performs transmission processing of transmission data requested by the communication processing unit 2504, 2502 is a reception unit that receives data from the roadside antenna c270, 2503 is a switch for switching between transmission processing and reception processing, and 2504 is a switch 2503 is a communication processing unit that performs data input / output with the switching processing of 2503, the transmission unit 2501, the reception unit 2502, and the road-vehicle-to-vehicle communication control unit 260.

  In this embodiment, when the road-to-vehicle wireless communication unit 250 communicates with a roadside device installed on the road, it is performed using the DSRC communication method. However, wireless LAN communication standardized by IEEE 802.11 is used. A method may be adopted. Alternatively, a communication method that enables communication with the vehicle, or broadcast such as broadcast may be used.

  The DSRC communication method is a method compliant with the standard “Narranged Communication System Standard ARIB STD-T75” established by the Japan Radio Industry Association, and installed at toll gates on toll roads such as expressways. This communication method is also used in ETC (Electronic Toll Collection) in which 5.8 GHz band wireless communication is performed between a base station device and an in-vehicle terminal device installed in a vehicle, and automatic fee collection is performed.

  Also in the above-described embodiment, for example, this DSRC communication method is used to propose a safe driving support for wirelessly transmitting and notifying a driver who is traveling the surrounding road conditions and vehicle traveling conditions.

  The inter-vehicle communication device 301 mounted on the vehicle 800 enters a communicable area with the roadside device when passing through the vicinity of the roadside device providing road traveling information, and wireless data communication is possible.

  When receiving a data transmission request from the road-to-vehicle-to-vehicle communication control unit 260, the communication processing unit 2504 sets transmission data in the transmission unit 2501, and switches the switch 2503 to the transmission unit 2501 side to perform data transmission. When the transmission process is completed, the switch 2503 switches to the receiving unit 2502 side. When data is received by the receiving unit 2502, the received data is acquired from the receiving unit 2502 and transmitted to the road-to-vehicle-to-vehicle communication control unit 260.

  FIG. 27 is a diagram illustrating an example of an internal configuration of the road-to-vehicle-to-vehicle-to-vehicle communication control unit 260. 2601 is a navigation interface unit for inputting / outputting data to / from the wireless communication control unit 104 of the navigation unit 100, 2602 is a vehicle-to-vehicle wireless communication unit a201, a vehicle-to-vehicle wireless communication unit b203, a road-to-vehicle wireless communication unit 250, and a navigation unit. 100 is a communication control processing unit that performs data input / output control processing, 2603 is an inter-vehicle transmission data storage unit that temporarily stores transmission data for inter-vehicle communication requested by the navigation unit 100, and 2604 is an inter-vehicle transmission A vehicle-to-vehicle reception data storage unit that temporarily stores reception data received from the wireless communication unit a201 and the vehicle-to-vehicle wireless communication unit b203, 2605 is a communication control processing unit 2602, a vehicle-to-vehicle wireless communication unit a201, and a vehicle-to-vehicle wireless communication unit. b203 and the road and vehicle which inputs and outputs data between the road and vehicle wireless communication part 250 A vehicle-to-vehicle communication interface unit, 2606 is a host vehicle ID storage unit that stores a vehicle ID that is determined in advance to identify the host vehicle, and 2607 is a temporary block of received data received from the road-to-vehicle wireless communication unit 250. Reference numeral 2608 denotes a road-to-vehicle reception data storage unit that temporarily stores reception data received from the road-to-vehicle wireless communication unit 250.

  FIG. 28 illustrates a case where the navigation control unit 101 sets the transmission cycle of the vehicle travel information of the host vehicle set in the road-to-vehicle-to-vehicle communication control unit 260 when road travel information is received from the roadside machine. FIG. 4 is a vehicle travel diagram in which a vehicle 400 travels in the vicinity of a merged lane. The roadside machine 2801 is a roadside machine that provides road traveling information such as the presence of a merged vehicle to a traveling vehicle. The merged vehicle 2802 is a merged vehicle that travels in the merged lane. Is the point where the vehicle A401 travels, the q point 2804 is the point where the vehicle 800 travels, the o point 2805 is the point where the vehicle D404 travels in front of the vehicle 800, and the r point 2806 is where the joining vehicle 2802 travels. It is a point to do.

  FIG. 29 is a processing sequence diagram when the navigation control unit 101 transmits / receives vehicle travel information to / from other vehicles through inter-vehicle communication and when road travel information is received from a roadside device through road-to-vehicle communication.

  FIG. 30 is a sequence diagram showing the control processing contents of the road-to-vehicle-to-vehicle-to-vehicle communication control unit 260. The road-to-vehicle-to-vehicle-to-vehicle communication control unit 260 receives vehicle travel information from each vehicle-to-vehicle wireless communication unit, updates vehicle travel information from the navigation unit 100, and transmits vehicle travel information to each vehicle-to-vehicle wireless communication unit. A request process, a vehicle travel information transmission cycle change process, and a road travel information reception process received from the roadside machine by the road-to-vehicle wireless communication unit 250 are performed.

  FIG. 31 is a sequence diagram showing details of reception processing when the road-to-vehicle-to-vehicle-to-vehicle communication control unit 260 receives road travel information from the roadside machine.

  FIG. 32 is a diagram illustrating a period for the road-to-vehicle-to-vehicle-to-vehicle communication control unit 260 to set a cycle for requesting transmission of vehicle driving information of each vehicle to each vehicle-to-vehicle wireless communication unit according to the received content of road driving information from the roadside machine. It is a vehicle travel information transmission cycle determination table c. The navigation control unit 101 sets the transmission cycle of the vehicle traveling information of the own vehicle in the road-to-vehicle-to-vehicle communication control unit 260 according to the contents of this table.

  FIG. 33 shows an internal configuration example of the navigation control unit 101 provided with an abnormal state detection unit 1018 that inputs a signal indicating an abnormal state of the vehicle to the control unit 1017 in addition to the configuration unit of the navigation control unit 101 shown in FIG. It is.

  Next, in the vehicle-to-vehicle communication apparatus 301 according to the embodiment of the present invention, the transmission / reception operation of the vehicle travel information when the vehicle 800 passes through the merged lane portion will be described with reference to FIGS. 2, 3, 4, 6, 10, and 10. This will be described with reference to FIGS. 13, 14, 16, 24, 25, 26, 27, 28, 29, 30, 30, 31, and 33. FIG.

  The operation when the inter-vehicle communication device 301 mounted on the vehicle 400 transmits / receives data to / from other vehicles and roadside devices located in the vicinity will be described.

  First, the operation of the navigation unit 100 will be described. The navigation control unit 101 performs the same operation as the vehicle-to-vehicle communication device 300 described in the second embodiment with respect to the vehicle travel information reception process from another vehicle and the vehicle travel information update process of the host vehicle.

  25 receives a notification that the road-to-vehicle-to-vehicle communication unit 700 has received road travel information from the roadside device via the wireless communication control unit 104 (S2901). In response to the content of the received data, display output such as sound output and image display is performed on the output unit 102 (S2902).

  2 is obtained from the vehicle information acquisition unit 1015 shown in FIG. 2 (S2903), and the own vehicle is referred to by referring to the own vehicle running information transmission cycle determination table c shown in FIG. 32 from the vehicle running speed and the received road running information. It is determined whether or not the travel information transmission cycle is updated (S2904). When updating, the own vehicle travel information transmission cycle update request is transmitted to the road-to-vehicle-to-vehicle-to-vehicle communication control unit 260 (S2905).

  Next, the operation of the road-vehicle-vehicle communication unit 700 will be described. The road-to-vehicle-to-vehicle-to-vehicle communication control unit 260 shown in FIG. 25 is a second embodiment regarding the process of periodically transmitting the vehicle travel information of the host vehicle from the vehicle-to-vehicle wireless communication unit a201 or the vehicle-to-vehicle wireless communication unit b203. The same processing as the vehicle-to-vehicle communication control unit 205 described is performed.

  In addition, the vehicle travel information update process when the vehicle travel information reception process of the other vehicle is received from the inter-vehicle radio communication unit a201 or the inter-vehicle radio communication unit b203, and the vehicle travel information update notification of the host vehicle is received from the navigation unit 100. With respect to the processing, the own vehicle traveling information transmission cycle timer end detection processing, the own vehicle traveling information transmission cycle update request reception processing from the navigation unit 100, and the processing related to these inter-vehicle communication control, the inter-vehicle vehicle described in the second embodiment The same processing as that of the communication control unit 205 is performed.

  When the road-to-vehicle / vehicle-to-vehicle communication control unit 260 shown in FIG. 27 receives a road travel information reception notification from the roadside device from the road-to-vehicle wireless communication unit 250 (S3001), a data reception process is performed (S3002). The presence or absence of received data in the road-to-vehicle received data storage unit 2607 is confirmed (S3101). If received data exists, it is determined whether or not it is received data (S3102), and the received data is discarded (S3103). ). In the case of unreceived data, it is transmitted to the navigation unit (S3104).

  Next, in FIG. 28, when the vehicle 800 travels in front of the merging lane, when the inter-vehicle communication device 301 receives road travel information from the roadside device 2801, it transmits and receives vehicle travel information to and from other vehicles located in the vicinity. The operation of the navigation unit 100 when doing so will be described.

  Until the vehicle 800 passes through the point p 2803 at 60 km / h and then reaches the point q 2804, the navigation control unit 101 obtains the vehicle traveling information from the vehicle traveling information transmission cycle determination table c shown in FIG. The road-to-vehicle-to-vehicle-to-vehicle communication control unit 260 is set to transmit data from the inter-vehicle wireless communication unit a201 and the inter-vehicle wireless communication unit b203 at a cycle of 0.5 seconds.

  Further, when the vehicle 800 passes the q point 2804 and enters the communicable area with the roadside device 2801, the roadside information 2A indicating the traveling of the joining vehicle 2802 from the joining lane from the roadside device 2801 is obtained from the road-to-vehicle wireless communication unit 250. This is received via the inter-vehicle inter-vehicle communication control unit 260.

  The navigation control unit 101 shown in FIG. 2 displays the received road travel information a on the output unit 102 and acquires the host vehicle travel speed from the vehicle information acquisition unit 1015. When the acquired own vehicle traveling speed is 60 km / h, the navigation control unit 101 transmits the own vehicle traveling information from the own vehicle traveling information transmission cycle determination table c at a cycle of 0.5 seconds from the inter-vehicle wireless communication unit a201, and the vehicle. The road-to-vehicle-to-vehicle-to-vehicle-to-vehicle communication control unit 260 is set to transmit from the inter-wireless communication unit b203 at a cycle of 0.1 second.

  In response to this, the road-to-vehicle-to-vehicle-to-vehicle communication control unit 260 changes the transmission cycle. Thereafter, when the vehicle 800 leaves the communicable area with the roadside device 2801 at a speed of 60 km / h, the navigation control unit 101 transmits the own vehicle travel information from the own vehicle travel information transmission cycle determination table c to the inter-vehicle wireless communication unit a201. And the vehicle-to-vehicle wireless communication unit b203 are set in the road-to-vehicle to vehicle-to-vehicle communication control unit 260 so as to transmit at a cycle of 0.5 seconds.

  As described above, when the vehicle 800 travels in the vicinity of the merged lane where the merged vehicle exists, the vehicle 800 transmits a large number of vehicle travel information of the host vehicle per unit time to the vehicle behind the vehicle, so that the vehicle driver travels to the vehicle driver. The state can be notified in more detail, and information for safe driving can be provided.

  In this embodiment, the transmission cycle of the host vehicle travel information is determined in consideration of only the conditions of the host vehicle travel information transmission cycle determination table c, but the host vehicle travel of FIG. 17 used in the second embodiment is used. You may make it determine the transmission cycle of the own vehicle running information on the conditions combined with the information transmission cycle judgment table a or the own vehicle running information transmission cycle judgment table b of FIG. 22 used in the third embodiment.

  In this embodiment, the data to be transmitted as vehicle travel information has the contents shown in FIG. 6, but a data area for storing arbitrary contents such as road travel information received from the roadside device 2801 is provided in the vehicle travel information table. You may make it transmit to a vehicle.

  Further, as another embodiment of the present invention, it is possible to provide a vehicle-to-vehicle communication device that preferably notifies a surrounding vehicle that a vehicle abnormality has occurred.

  This embodiment can be realized, for example, by providing an abnormal state detection unit 1018 for inputting a signal indicating an abnormal state of the vehicle in the control unit 1017 of the navigation control unit 101 as shown in FIG. . Of course, instead of the other realization means provided with the abnormal state detection unit, for example, a signal indicating the state of each part of the vehicle is input to the navigation control unit 101, and the value of the signal is preset. The navigation control unit 101 or the control unit 1017 of the navigation control unit 101 may determine that an abnormality has occurred when a predetermined value has been exceeded or the degree of change has increased.

  The signals indicating the abnormal state of the vehicle include abnormalities such as the operating state of the engine, the operating state of the driving force transmission system, the operating state of the cooling system, and the operating state of the traveling system including the control system that changes the direction of the vehicle. However, the present invention is not limited to this, and any information that indicates a problem when the vehicle travels normally is included. For example, when the vehicle changes the course direction, a direction light indicating the direction or a brake lamp that is turned on when a brake is stepped on may not be normally turned on.

  When these abnormalities occur, abnormal information indicating the abnormality or abnormal transmission information created based on the abnormal information is transmitted to surrounding vehicles so as to notify the abnormality of the own vehicle. To do. For example, when the brake lamp does not light up normally, it is possible to notify the vehicle traveling behind the vehicle more appropriately of the abnormality of the host vehicle by increasing the frequency of transmission to the rear.

  According to the embodiment of the present invention described above, it becomes possible to provide vehicle driving information with a suitable amount of information at a suitable timing to a driver who drives a vehicle traveling around while the vehicle is traveling. Can provide the driver with comfortable driving.

It is the block diagram which showed one Example of the whole structure of the vehicle-to-vehicle communication apparatus of this invention. It is the block diagram which showed one Example of the internal structure of the navigation control part in the vehicle-to-vehicle communication apparatus of this invention. It is the block diagram which showed one Example of the internal structure of the vehicle-to-vehicle radio | wireless communication part a in the vehicle-to-vehicle communication apparatus of this invention. It is the block diagram which showed one Example of the internal structure of the vehicle-to-vehicle radio | wireless communication part b in the vehicle-to-vehicle communication apparatus of this invention. It is the block diagram which showed one Example of the internal structure of the vehicle-to-vehicle communication control part in the vehicle-to-vehicle communication apparatus of this invention. It is a figure which shows the structure table | surface and data format which showed one Example of the content of the vehicle running information which the vehicle-to-vehicle communication apparatus of this invention transmits / receives between vehicles. 1 is a vehicle travel diagram showing an example of a communication area when a vehicle equipped with an inter-vehicle communication device of the present invention performs wireless communication with surrounding vehicles. It is a block diagram which shows the operation example in the case of receiving the vehicle travel information transmitted from the vehicle-to-vehicle wireless communication part a by the vehicle-to-vehicle wireless communication part b of the own vehicle in the vehicle-to-vehicle communication apparatus of the present invention. It is a sequence diagram which shows one Example of the processing content in case a vehicle-to-vehicle communication part performs a self-diagnosis process in the vehicle-to-vehicle communication apparatus of this invention. FIG. 5 is a block diagram showing an embodiment of an operation of receiving vehicle travel information transmitted from a vehicle traveling around in a vehicle equipped with the inter-vehicle communication device of the present invention. FIG. 6 is a vehicle travel diagram showing a communication area when a vehicle that is traveling ahead operates a brake and a vehicle equipped with the inter-vehicle communication device of the present invention performs wireless communication with surrounding vehicles. It is a sequence diagram which shows one Example of the process by which the navigation control part in the vehicle-to-vehicle communication apparatus of this invention transmits / receives vehicle travel information with another vehicle by vehicle-to-vehicle communication. It is a sequence diagram which shows one Example of the process in which the navigation control part in the inter-vehicle communication apparatus of this invention updates the vehicle travel information of the own vehicle transmitted by inter-vehicle communication. It is a sequence diagram which shows one Example which the navigation control part in the inter-vehicle communication apparatus of this invention analyzes and displays the vehicle travel information of the other vehicle received by the inter-vehicle communication. It is a sequence diagram which shows one Example of the control processing regarding transmission / reception of the vehicle travel information which the vehicle-to-vehicle communication control part in the vehicle-to-vehicle communication apparatus of this invention performs. It is a sequence diagram which shows one Example of the reception process of the vehicle travel information which the vehicle-to-vehicle communication control part in the vehicle-to-vehicle communication apparatus of this invention performs. It is a table | surface table | surface which shows one Example of the content which sets the transmission period of the vehicle travel information set to each vehicle inter-vehicle wireless communication part in the inter-vehicle communication apparatus of this invention according to a driving | running | working condition. It is a figure which shows one Example when the navigation control part in the vehicle-to-vehicle communication apparatus of this invention displays the vehicle running information received from the other vehicle on the display of an output part. It is a figure which shows one Example of the table which recorded the vehicle travel information which the navigation control part in the inter-vehicle communication apparatus of this invention received from the other vehicle. FIG. 5 is a vehicle travel diagram showing a communication region when a vehicle equipped with the vehicle-to-vehicle communication device of the present invention performs wireless communication with surrounding vehicles when a vehicle traveling in front operates a brake. It is a vehicle travel diagram which shows one Example of the operation | movement which sets the transmission period of the vehicle travel information which the navigation control part sets in the inter-vehicle communication apparatus of this invention according to a travel location. It is a table | surface table | surface which shows one Example of the content which sets the transmission period of the vehicle travel information set to each vehicle inter-vehicle radio | wireless communication part in the inter-vehicle communication apparatus of this invention according to a driving | running | working place. It is a sequence diagram which shows one Example of the process by which the navigation control part in the inter-vehicle communication apparatus of this invention transmits / receives vehicle travel information with another vehicle by inter-vehicle communication. It is a sequence diagram which shows one Example of the process which updates the vehicle travel information of the own vehicle which the navigation control part in the inter-vehicle communication apparatus of this invention transmits by inter-vehicle communication. It is the block diagram which showed one Example of the whole structure of the vehicle-to-vehicle communication apparatus of this invention. It is a block diagram which shows one Example of the internal structure of the road-vehicle radio | wireless communication part in the vehicle-to-vehicle communication apparatus of this invention. It is a block diagram which shows one Example of the internal structure of the road-vehicle-vehicle communication control part in the vehicle-vehicle communication apparatus of this invention. It is a vehicle travel figure which shows one Example of the operation | movement which sets the transmission period of the vehicle travel information which the navigation control part in the inter-vehicle communication apparatus of this invention sets when road travel information from a roadside machine is received. It is a sequence diagram which shows one Example of the process by which the navigation control part in the inter-vehicle communication apparatus of this invention transmits / receives vehicle travel information with another vehicle by inter-vehicle communication. It is a sequence diagram which shows one Example of the control processing regarding transmission / reception of the vehicle travel information which the road-vehicle-vehicle communication control part in the vehicle-to-vehicle communication apparatus of this invention performs. It is a sequence diagram which shows one Example of the process in which the road-to-vehicle-to-vehicle-to-vehicle communication control part in a vehicle-to-vehicle communication apparatus of this invention receives road driving information from a roadside machine. It is a table | surface table | surface which shows one Example of the content set when the road driving | running information from a roadside machine is received for the transmission period of the vehicle driving | running | working information set to each inter-vehicle radio | wireless communication part in the inter-vehicle communication apparatus of this invention. It is the block diagram which showed one Example of the internal structure of the navigation control part in the vehicle-to-vehicle communication apparatus of this invention.

Explanation of symbols

100: navigation unit 101: navigation control unit 102: output unit 103: input unit 104: wireless communication control unit 200: inter-vehicle communication unit 201: inter-vehicle wireless communication unit a
202: Antenna a
203: Inter-vehicle wireless communication part b
204: Antenna b
205: Vehicle-to-vehicle communication control unit 250: Road-to-vehicle wireless communication unit 260: Road-to-vehicle to vehicle-to-vehicle communication control unit 270: Roadside antenna c
300: Vehicle-to-vehicle communication device 301: Vehicle-to-vehicle communication device 400: Vehicle 401: Vehicle A
402: Vehicle B
403: Vehicle C
404: Vehicle D
405: Vehicle E
406: Vehicle F
407: Vehicle G
408: Vehicle H
500: Road 600: Common communication area 601: Communication area a
602: Communication area b
700: Road-to-vehicle-to-vehicle communication unit 800: Vehicle 1011: Acceleration sensor 1012: GPS
1013: Gyro 1014: Map information recording unit 1015: Vehicle information acquisition unit 1016: Other vehicle travel information storage unit 1017: Control unit 1018: Vehicle abnormality detection part 1101: a point 1102: b point 2011: transmission unit 2012: reception unit 2013: switch 2014: communication control unit 2015: communication processing unit 2016: own vehicle data detection unit 2017: own vehicle ID storage unit 2031: transmission unit 2032: reception unit 2033: switch 2034: communication control unit 2035: communication processing unit 2036: Vehicle data detection unit 2037: Vehicle ID storage unit 2051: Navigation interface unit 2052: Communication control processing unit 2053: Transmission data storage unit 2054: Reception data storage unit 2055: Inter-vehicle communication interface unit 2056: Vehicle ID storage unit 2101 : S point 2102: t point 21 3: u point 2104: v point 2105: w point 2106: vehicle L
2107: Vehicle M
2108: Vehicle N
2501: Transmission unit 2502: Reception unit 2503: Switch 2504: Communication processing unit 2601: Navigation interface unit 2602: Communication control processing unit 2603: Inter-vehicle transmission data storage unit 2604: Inter-vehicle reception data storage unit 2605: Inter-vehicle communication Interface unit 2606: Own vehicle ID storage unit 2607: Road-to-vehicle reception data storage unit 2608: Road-to-vehicle transmission data storage unit 2801: Roadside device 2802: Junction vehicle 2803: p point 2804: q point 2805: o point 2806: r point

Claims (14)

Having a plurality of wireless communication means for wirelessly communicating data with other vehicles,
Vehicle-to-vehicle communication control means for individually controlling communication of each wireless communication means;
Display means for displaying and outputting data received by the wireless communication means;
An input means for inputting operation settings;
Travel information acquisition means for acquiring travel information that is information obtained regarding the travel of the own vehicle;
Control means for controlling the vehicle-to-vehicle communication control means so as to transmit the travel information or transmission information created based on the travel information from the wireless communication means;
A vehicle-to-vehicle communication device, wherein a transmission frequency of the travel information or the transmission information is changed according to positions where the plurality of wireless communication means are installed in the vehicle. The inter-vehicle communication device according to claim 1,
The travel information is information including any one of a travel position, speed, acceleration, engine speed, torque, brake operation state, and accelerator opening state of the vehicle. The inter-vehicle communication device according to claim 1,
A vehicle-to-vehicle communication device characterized by changing the transmission frequency of the travel information or the transmission information when the travel information of the host vehicle changes. The inter-vehicle communication device according to claim 1,
When the vehicle information control means detects any change of the brake operation of the own vehicle, a decrease in speed, and a decrease in acceleration, the inter-vehicle communication control means is transmitted from the wireless communication means installed behind the vehicle. The vehicle-to-vehicle communication device is controlled to increase the transmission frequency of the traveling information or the transmission information. The inter-vehicle communication device according to claim 1,
When the travel information acquisition means detects any change of accelerator opening, speed increase, acceleration increase of the host vehicle, the travel information transmitted from the wireless communication means installed in front of the vehicle, or A vehicle-to-vehicle communication device that controls to increase the transmission frequency of transmission information. The inter-vehicle communication device according to claim 1,
A vehicle-to-vehicle communication device characterized in that when the travel location of the vehicle obtained by the travel information acquisition means changes, the frequency of transmission of the travel information or the transmission information is changed. The inter-vehicle communication device according to claim 6,
When the traveling location of the own vehicle is near an intersection, the traveling information transmitted from the wireless communication means installed behind the vehicle or the transmission frequency of the transmission information is controlled to increase. Vehicle-to-vehicle communication device. Having a plurality of wireless communication means for wirelessly communicating data with other vehicles,
Vehicle-to-vehicle communication control means for individually controlling communication of each wireless communication means;
Display means for displaying and outputting data received by the wireless communication means;
An input means for inputting operation settings;
Travel information acquisition means for acquiring travel information that is information obtained regarding the travel of the own vehicle;
Control means for controlling the vehicle-to-vehicle communication control means so as to transmit the travel information or transmission information created based on the travel information from the wireless communication means;
A vehicle-to-vehicle communication device characterized in that the magnitude of the output transmitted from the wireless communication means is changed according to the positions where the plurality of wireless communication means are installed in the vehicle. Having a plurality of wireless communication means for wirelessly communicating data with other vehicles,
Road-to-vehicle wireless communication means for wirelessly communicating data with a roadside device installed along the road;
Each vehicle-to-vehicle wireless communication means, or road-to-vehicle-to-vehicle communication control means for performing communication control of the road-to-vehicle wireless communication means;
Display means for displaying and outputting data received by the vehicle-to-vehicle wireless communication means or the road-to-vehicle wireless communication means;
An input means for inputting operation settings;
Travel information acquisition means for acquiring travel information, which is information obtained regarding the travel of the own vehicle, and the road information so as to transmit the travel information or transmission information created based on the travel information from the wireless communication means. Control means for controlling the inter-vehicle inter-vehicle communication control means;
Comprising at least
The road-to-vehicle-to-vehicle-to-vehicle communication control means is configured to determine the travel information or the transmission information according to the position of the plurality of wireless communication means installed in the vehicle according to the content of the data received by the road-to-vehicle wireless communication means. A vehicle-to-vehicle communication device characterized by changing the transmission frequency of the vehicle. The inter-vehicle communication device according to claim 9,
When the data received by the road-to-vehicle wireless communication means is information indicating the presence of a merging vehicle, the traveling information transmitted from the wireless communication means installed behind the vehicle or the transmission frequency of the transmission information is increased. The vehicle-to-vehicle communication device is controlled to perform the control. Having a plurality of wireless communication means for wirelessly communicating data with other vehicles,
Storage means for recording the unique information of the own vehicle;
Vehicle-to-vehicle communication control means for individually controlling communication of each wireless communication means;
Display means for displaying and outputting data received by the wireless communication means;
An input means for inputting operation settings;
Comprising at least
From the one of the plurality of wireless communication means, the unique information of the vehicle stored in the storage means is transmitted, and the information received by the other wireless communication means and the storage means are transmitted. A vehicle-to-vehicle communication device characterized in that the operation state of the wireless communication means is confirmed by comparing the stored unique information of the vehicle. Having a plurality of wireless communication means for wirelessly communicating data with other vehicles,
Vehicle-to-vehicle communication control means for individually controlling communication of each wireless communication means;
Display means for displaying and outputting data received by the wireless communication means;
An input means for inputting operation settings;
Anomaly information acquisition means for acquiring anomaly information that is information obtained regarding anomalies in the own vehicle;
Control means for controlling the vehicle-to-vehicle communication control means so as to transmit the abnormality information or the abnormality transmission information created based on the abnormality information from the wireless communication means,
A vehicle-to-vehicle communication device, wherein the abnormality information or the transmission frequency of the abnormality transmission information is changed according to the positions where the plurality of wireless communication means are installed in the vehicle. The vehicle-to-vehicle communication device according to claim 12,
The abnormal information is information indicating any abnormal state of the operating state of the engine, the operating state of the transmission system of the driving force, the operating state of the cooling system, or the operating state of the traveling system including the control system that changes the direction of the vehicle. A vehicle-to-vehicle communication device characterized by the above. The vehicle-to-vehicle communication device according to claim 12,
When the abnormality information of the own vehicle changes, a transmission frequency of the abnormality information or the abnormality transmission information is changed.

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