JP2009104230A - Communication system between vehicle/vehicle and between person/vehicle, onboard communication device and mobile communication device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To minimize the power consumption of mobile radio device, and to provide information necessary for prevention security to a driver and a pedestrian in the technology of prevention security for preliminarily preventing any accident by notifying the approach of a vehicle by performing the data communication of vehicle traveling circumstances by radio between a vehicle and a vehicle and between a vehicle and a pedestrian. <P>SOLUTION: In this radio communication system configured of onboard communication device loaded on a vehicle and mobile communication device carried by a pedestrian, the onboard communication device includes a radio communication means for a vehicle for performing data communication with another vehicle; and a radio communication means for a pedestrian for performing data communication with the mobile communication device carried by the pedestrian, and the mobile communication device includes a radio communication means between a person and a vehicle for receiving not vehicle traveling information transmitted from the radio communication means for a vehicle but vehicle traveling information transmitted from the radio communication means for a pedestrian. Thus, it is not necessary to receive vehicle traveling information transmitted for a vehicle, and it is possible to reduce power consumption. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technology for performing inter-vehicle communication between vehicles and between vehicles and between vehicles using a wireless communication device installed in a vehicle and a wireless device installed in a mobile phone.

  Preventive safety technology to prevent accidents from occurring by notifying drivers and pedestrians of approaching vehicles by wirelessly communicating data on vehicle running conditions between vehicles and between vehicles and pedestrians. Consideration is ongoing. Regarding this, there are disclosures in Patent Document 1 and Patent Document 2.

  Patent Document 1 states that “the in-vehicle wireless communication device determines the risk level from the position of the own vehicle specified by using the GPS receiver and the pedestrian GPS information received from the wireless communication device carried by the pedestrian, When there is a possibility of danger, the driver is informed of this, and the mobile radio communication device is similarly identified by using the GPS receiver, and the vehicle GPS information received from the in-vehicle radio communication device Thus, a technique for determining the degree of danger and calling a pedestrian when there is a possibility of danger is disclosed.

Patent Document 2 relates to a system for preventing a collision accident by providing a vehicle with a transceiver such as a pedestrian and the like. When the vehicle-mounted transceiver generates electromagnetic waves at any time and the pedestrian transceiver detects electromagnetic waves. The in-vehicle transmitter / receiver that generates the electromagnetic wave and receives the electromagnetic wave from the pedestrian transmitter / receiver calculates the distance and direction to the pedestrian transmitter / receiver, processes the calculation result and information such as the steering angle of the car, etc. Estimated, when there is a pedestrian with a high degree of danger, the vehicle-mounted transceiver alerts the danger and transmits an electromagnetic wave to the pedestrian transceiver, and the pedestrian transceiver senses the electromagnetic wave and outputs an alarm. ing.
JP 2004-220143 A JP 7-306995 A

  In Patent Document 1, a wireless communication system that performs direct wireless communication between an in-vehicle wireless communication device mounted on a vehicle and a pedestrian portable wireless communication device carried by a pedestrian, the pedestrian portable wireless communication device is mounted on the device itself. The pedestrian mobile wireless communication device is a vehicle-mounted wireless communication device that determines the degree of danger from the pedestrian GPS information and the vehicle GPS information received from the vehicle and alerts the pedestrian in situations where there is a possibility of danger. Only when receiving a packet from the communication device, the pedestrian portable wireless communication device can suppress power consumption to a minimum level by transmitting a packet including position information. However, when the frequency of transmission from the vehicle is high or when there are many vehicles in the vicinity, the pedestrian portable wireless communication device receives a large number of packets from the vehicle in the vicinity and consumes it because it transmits its own information. There is a problem of consuming a large amount of power.

  Moreover, in the said patent document 2, the pedestrian portable transmitter / receiver which a pedestrian owns has transmitted electromagnetic waves at any time, and the onboard equipment mounted in the vehicle has received this at any time, and from the pedestrian portable transmitter / receiver Receives signals, determines the degree of danger, and notifies the driver of the danger. The pedestrian portable transceiver outputs electromagnetic waves at any time, so it always consumes power to transmit information even when there is no vehicle nearby. There is a problem of doing.

  The present invention directly and wirelessly communicates vehicle travel information and pedestrian position information between vehicles and between vehicles / walking vehicles using an in-vehicle wireless communication device mounted on the vehicle and a portable wireless communication device carried by the pedestrian. In the wireless communication system, the portable wireless communication device receives only the necessary vehicle travel information for the pedestrian, and transmits the pedestrian information including its own position information only when necessary. It aims at minimizing power consumption and providing information necessary for preventive safety to drivers and pedestrians.

  In order to solve the above-described problems, the inter-vehicle and inter-vehicle communication system of the present invention includes an in-vehicle communication device mounted on a vehicle and a portable communication device carried by a pedestrian. The in-vehicle communication device is a vehicle that performs wireless data communication with another vehicle and a wireless communication means for wireless communication with a portable communication device carried by a pedestrian. Wireless communication means for a person, wireless communication control means for controlling communication of each of the wireless communication means, display means for displaying and outputting the contents of data received by the wireless communication means, at least the vehicle position, the traveling direction Vehicle information acquisition means for generating vehicle travel information including speed information, vehicle travel information is acquired from the vehicle information acquisition means, and the wireless communication control means is controlled to control the vehicle wireless communication means Processing control means for performing transmission processing of vehicle travel information from the pedestrian wireless communication means, and the portable communication device transmits and receives vehicle travel information with the pedestrian wireless communication means, and Personnel wireless communication means that does not receive vehicle travel information transmitted from the vehicle wireless communication means, display means that displays and outputs data received by the person vehicle wireless communication means, and at least the position and direction of movement of the device itself Pedestrian information acquisition means for generating pedestrian information including, and when the vehicle travel information is received by the person-to-vehicle wireless communication means, the content for notifying the approach of the vehicle is displayed on the display means, and the pedestrian information acquisition is performed. Portable terminal control means for performing control so that pedestrian information acquired by the means is transmitted from the human-vehicle wireless communication means, and the portable communication device includes the in-vehicle communication Without receiving vehicle driving information transmitted from the wireless communication means for location of the vehicle, receives the vehicle drive information transmitted from the wireless communication unit for pedestrian of the vehicle communication device.

Next, the inter-vehicle and inter-vehicle communication system of the present invention includes an in-vehicle communication device mounted on a vehicle and a portable communication device carried by a pedestrian, and performs data communication between the vehicle and between the vehicle and the pedestrian by radio. The in-vehicle communication device includes a wireless communication unit that wirelessly performs data communication with a portable communication device carried by another vehicle and a pedestrian, and a wireless communication control unit that performs communication control of the wireless communication unit. Display means for displaying and outputting contents of data received by the wireless communication means;
Vehicle information acquisition means for generating vehicle travel information including at least the vehicle position, travel direction, and speed information; vehicle travel information is acquired from the vehicle information acquisition means; and the wireless communication control means is controlled to control the wireless communication means At least processing control means for performing vehicle travel information transmission processing from the mobile communication device, and the mobile communication device transmits and receives vehicle travel information to and from the wireless communication means, and transmits the vehicle travel information transmitted from the wireless communication means. Human-vehicle wireless communication means that does not receive information, display means that displays and outputs data received by the human-vehicle wireless communication means, and pedestrian information acquisition means that generates pedestrian information including at least the position and moving direction of the own device When the vehicle traveling information is received by the human-vehicle wireless communication means, the content for notifying the approach of the vehicle is displayed on the display means, and the pedestrian information acquiring means takes it. Mobile terminal control means for performing control so as to transmit the pedestrian information transmitted from the human-vehicle wireless communication means, and using the wireless communication means of the in-vehicle communication device, the vehicle traveling information is transmitted to other vehicles. When transmitting / receiving, the carrier frequency assigned for inter-vehicle communication is used, and when transmitting / receiving the vehicle travel information with the portable communication device carried by the pedestrian, the carrier frequency assigned for pedestrian-to-vehicle communication Work to use.

Next, the inter-vehicle and inter-vehicle communication system of the present invention includes an in-vehicle communication device mounted on a vehicle and a portable communication device carried by a pedestrian, and performs data communication between the vehicle and between the vehicle and the pedestrian by radio. The in-vehicle communication device includes a wireless communication unit that wirelessly performs data communication with a portable communication device carried by another vehicle and a pedestrian, and a wireless communication control unit that performs communication control of the wireless communication unit. Display means for displaying and outputting contents of data received by the wireless communication means;
Vehicle information acquisition means for generating vehicle travel information including at least the vehicle position, travel direction, and speed information; vehicle travel information is acquired from the vehicle information acquisition means; and the wireless communication control means is controlled to control the wireless communication means At least processing control means for performing vehicle travel information transmission processing from the mobile communication device, and the portable communication device transmits / receives vehicle travel information to / from the wireless communication means, and the person / vehicle wireless communication means. When the vehicle travel information is received by the display means for displaying and outputting the received data, the pedestrian information acquisition means for generating pedestrian information including at least the position and moving direction of the own apparatus, and the human-vehicle wireless communication means The control unit is configured to display on the display means the content of notifying the approach of the vehicle and to transmit the pedestrian information acquired by the pedestrian information acquisition means from the human-vehicle wireless communication means. Mobile terminal control means, and when transmitting the vehicle travel information from the wireless communication means of the in-vehicle communication device to another vehicle, data indicating vehicle information is included in the vehicle travel information. In the case where the vehicle travel information is transmitted to a mobile communication device carried by a pedestrian, the data indicating that the information is information for pedestrians is added to the vehicle travel information, and the mobile communication is transmitted. The device operates to discard if the received vehicle travel information is not intended for pedestrians.

Next, the portable communication device used in the inter-vehicle and inter-vehicle communication system of the present invention has the same configuration as the portable communication device used in the inter-vehicle and inter-vehicle communication system, Has a reception level measurement function for measuring the level of the received signal. When vehicle driving information is received, the reception signal level is measured by the reception level measurement function, and if the signal level does not reach a certain level, When the mobile terminal control means performs display processing of received data and when a signal level above a certain level is detected, the received data display processing and the pedestrian acquired by the pedestrian information acquisition means by the mobile terminal control means Operates to perform information transmission processing.
Next, the portable communication device used in the inter-vehicle and inter-vehicle communication system of the present invention has the same configuration as the portable communication device used in the inter-vehicle and inter-vehicle communication system, Operates so as to transmit the pedestrian information acquired by the pedestrian information acquisition means to the in-vehicle communication device at a constant period during a period in which the vehicle travel information is received from the in-vehicle communication device within a predetermined time. .

  Next, the in-vehicle communication device used in the inter-vehicle and inter-vehicle communication system of the present invention has the same configuration as the in-vehicle communication device used in the inter-vehicle and inter-vehicle communication system, and transmits the vehicle. The transmission cycle of traveling information and the transmission cycle of vehicle traveling information transmitted to pedestrians are performed at different transmission intervals.

  Next, the in-vehicle communication device used in the inter-vehicle and inter-vehicle communication system of the present invention has the same configuration as the in-vehicle communication device used in the inter-vehicle and inter-vehicle communication system, and transmits the vehicle. The transmission cycle of travel information is set shorter than the transmission cycle of vehicle travel information transmitted to pedestrians.

  Next, the in-vehicle communication device used in the inter-vehicle and inter-vehicle communication system of the present invention has the same configuration as the in-vehicle communication device used in the inter-vehicle and inter-vehicle communication system, and vehicle travel information for the vehicle. The transmission output level when transmitting the vehicle and the transmission output level when transmitting vehicle travel information for pedestrians are set to individual values.

  Next, the in-vehicle communication device used in the inter-vehicle and inter-vehicle communication system of the present invention has the same configuration as the in-vehicle communication device used in the inter-vehicle and inter-vehicle communication system, and vehicle travel information for the vehicle. Is set so as to be higher than the transmission output level when vehicle driving information is transmitted to pedestrians.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the system and apparatus which improved safety more than before.

  Embodiments of a vehicle-to-vehicle and person-to-vehicle communication system according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a diagram showing an embodiment of the overall configuration of an in-vehicle communication device used in 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 displays an output, 103 is an input unit for the driver to input a destination and the like to the navigation unit 100, and 104 is a wireless communication control unit for transmitting and receiving data to and from the wireless communication unit 200. .

  Reference numeral 200 denotes vehicle traveling information indicating the traveling state of the vehicle between the other vehicle A 401 and the mobile phone device 500, and pedestrian information indicating the position information and moving direction of the mobile phone device 500 possessed by the pedestrian A 600. A wireless communication unit that communicates wirelessly, 201 is a wireless communication unit between pedestrians that transmits vehicle travel information of the host vehicle and receives pedestrian information from another mobile phone device 500, 202 is a wireless between pedestrians A pedestrian antenna used for wireless data transmission / reception of the communication unit 201, 203 is a vehicle-to-vehicle wireless communication unit that transmits vehicle traveling information of the host vehicle and receives vehicle traveling information of other vehicles, and 204 is a vehicle-to-vehicle wireless communication unit. Reference numeral 203 denotes a vehicular antenna used for wireless data transmission / reception, and 205 denotes a communication control unit that performs control processing of each unit in the wireless communication unit 200.

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

  Reference numeral 401 denotes a vehicle A, 500 which is equipped with an in-vehicle communication device 300 mounted on the vehicle 400 and transmits / receives vehicle travel information, wirelessly performs voice calls with other mobile phone devices, and is connected to the center device for music and image content. A mobile phone device that downloads data and the like, receives vehicle travel information indicating the travel status of the vehicle with the wireless communication unit 200 mounted on a vehicle traveling in the vicinity, and receives its own location information and travel direction It has the function to transmit the pedestrian information which shows this to a vehicle wirelessly. Reference numeral 600 denotes a pedestrian A carrying the mobile phone device 500.

  In the in-vehicle communication device 300, the surrounding vehicle or the surrounding pedestrian A600 carries the vehicle travel information from the wireless communication control unit 104 to the communication control unit 205 or the transmission information created based on the vehicle travel information. It is requested to transmit to the mobile phone device 500.

  However, the present invention is not limited to this configuration, and the communication control unit 205 may be controlled by the control unit 1018 provided in the navigation control unit 101 that performs control processing in the navigation unit 100 equipped with a navigation function or the like. Good.

  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 traveling information of other vehicles received via the wireless communication control unit 104 or the pedestrian information from the mobile phone device 500 possessed by the surrounding pedestrian A600 is analyzed and displayed on the output unit 102.

  The output unit 102 is controlled by the navigation control unit 101 to display an image of various types of information such as map information and road congestion information output from the navigation control unit 101, and voice of route guidance information output from the navigation control unit 101. It is composed of a speaker that performs output. 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 inputs / outputs the vehicle traveling information of the own vehicle, the vehicle traveling information of other vehicles traveling around the vehicle, and the pedestrian information from the mobile phone device 500 possessed by the surrounding pedestrian A600. It is an interface part for doing. The host vehicle refers to the vehicle 400, and the other vehicle refers to the vehicle A401 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. Reference numeral 1017 denotes pedestrian information indicating the position information and the moving direction of the mobile phone device 500 possessed by the surrounding pedestrian A600. A pedestrian information storage unit 1018 is 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 1018.

  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 1018.

  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 1018.

  The map information recording unit 1014 records map information for displaying the current position of the vehicle 400, the destination of the vehicle 400, and the like on the output unit 102 under the control of the control unit 1018. The map information recording unit 1014 outputs the specified map information in response to a request from the control unit 1018.

  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 1018. An example of specific vehicle travel information is shown in FIG.

  The control unit 1018 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 vehicle traveling location is read out from the map, and the vehicle traveling position 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 wireless communication unit 200 analyzes vehicle travel information received from another vehicle, and outputs information on the vehicle traveling around the vehicle to the output unit 102.

  FIG. 3 is a diagram illustrating an example of the internal configuration of the pedestrian wireless communication unit 201. 2011 is a transmission unit that performs data transmission processing in response to a request from the pedestrian communication processing unit 2014, 2012 is a reception unit that receives data from the pedestrian antenna 202, 2013 is a switch for switching between transmission processing and reception processing, 2014 includes a switching process of the switch 2013, a transmission unit 2011, a reception unit 2012, a communication control unit 205, and an inter-pedestrian communication processing unit that performs data input / output.

When the pedestrian communication processing unit 2014 receives a data transmission request from the communication control unit 205, the pedestrian communication processing unit 2014 checks the usage status of the surrounding wireless transmission channel, and sets the transmission data to the transmission unit 2011 if not used. The switch 2013 is switched to the transmission unit 2011 side to perform data transmission. 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 CSMA / CA (Carrier Sense Multiplex).
This is called an “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. When data is received by the receiving unit 2012, the data is transmitted to the communication control unit 205.

  FIG. 4 is a diagram illustrating an example of the internal configuration of the inter-vehicle wireless communication unit 203. Reference numeral 2031 denotes a transmission unit that performs data transmission processing in response to a request from the inter-vehicle communication processing unit 2034, 2032 denotes a reception unit that receives data from the vehicle antenna 204, 2033 denotes a switch for switching between transmission processing and reception processing, and 2034 denotes A switch 2033 switching process, and a transmission unit 2031, a reception unit 2032, a communication control unit 205, and a communication processing unit that inputs and outputs data. In the present embodiment, the inter-vehicle wireless communication unit 203 is configured with the same function and the same part as the inter-pedestrian wireless communication unit 201, and each part performs the same processing, but the communication processing method is different with the same configuration. A method may be adopted.

  FIG. 5 is a diagram illustrating an example of the internal configuration of the 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, and 2052 is a data input / output unit to / from the pedestrian wireless communication unit 201, the inter-vehicle wireless communication unit 203, and the navigation unit 100. A communication control processing unit that performs output control processing, 2053 is a transmission data storage unit that temporarily stores transmission data requested by the navigation unit 100, 2054 is a pedestrian wireless communication unit 201, and an inter-vehicle wireless communication unit. A received data storage unit 2055 temporarily stores the received data received from 203, and inputs / outputs data between the communication control processing unit 2052, the pedestrian wireless communication unit 201, and the inter-vehicle wireless communication unit 203. A vehicle-to-vehicle communication interface unit.

  FIG. 6 is a table showing an example of the contents of vehicle travel information transmitted and received between vehicles and transmitted to pedestrians. The data elements include a host vehicle ID that is a number that identifies the host vehicle, a vehicle type that indicates the model of the host vehicle, latitude, longitude, altitude that indicates the location where the host vehicle is traveling, and a vehicle speed that indicates the traveling speed of the host vehicle. , An acceleration indicating the traveling acceleration of the host vehicle, a direction indicating the traveling direction of the host vehicle, a brake indicating the use state of the brake, and an accelerator indicating the use state of the accelerator. 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 the format into the format shown in FIG.

FIG. 7 is a diagram illustrating an example of the overall configuration of a mobile phone device 500 that receives travel information from a vehicle traveling in the vicinity and transmits pedestrian information indicating the position information and movement direction of the device itself to the surrounding vehicle. is there.

  501 is a display unit for displaying voice / image information, 502 is an operation unit for performing an input operation such as a call or start of data communication, and 503 is a voice call with another mobile phone device or wireless communication with a center device. The mobile phone wireless communication unit 504 performs wireless communication with the wireless communication unit 200 mounted on a vehicle traveling around the vehicle, and 505 indicates vehicle travel information received from the vehicle traveling around. Processing and vehicle information processing unit that generates pedestrian information and performs transmission control, 506 is equipped with GPS, acquires its own positional information (latitude, longitude), and calculates a traveling direction, 507 is a portable information processing unit A mobile phone control unit that controls the entire telephone device 500.

  When the user performs an input operation on the operation unit 502 such as voice call or data communication connection start, the mobile phone control unit 507 makes a wireless communication connection processing request to the mobile phone wireless communication unit 503 according to the input content. When a wireless communication connection completion response is received from the mobile phone wireless communication unit 503, a wireless communication connection notification is displayed on the display unit 501. Thereafter, voice call and data communication are performed according to the input contents of the user. When an incoming notification is received from the mobile phone wireless communication unit 503, an incoming display is output to the display unit 501 to notify the user. Thereafter, a wireless communication connection is performed in accordance with the content input to the operation unit 502 by the user.

  FIG. 8 is a table showing an example of the contents of the pedestrian information indicating the position information and the moving direction of the pedestrian transmitted to the vehicle traveling around by the mobile phone device 500. The data elements include a mobile ID that is a number that identifies the mobile phone device, a latitude and longitude that indicate the location of the mobile phone device, and a direction that indicates the moving direction of the pedestrian. The vehicle information processing unit 505 acquires pedestrian information such as location and direction from the position information acquisition unit 506, converts it into the vehicle travel information data format shown in FIG. 6, and then inter-vehicle wireless communication unit 504 at a predetermined timing. Request to send to.

  FIG. 9 is a vehicle pedestrian arrangement diagram illustrating an embodiment in which the vehicle 400 performs wireless communication with surrounding vehicles and pedestrians.

  The vehicle A 401 is traveling behind the same lane of the vehicle 400, the vehicle B 402 is a vehicle traveling in the opposite lane of the vehicle 400, and each vehicle is equipped with the in-vehicle communication device 300.

  800 is a point t where the vehicle 400 is traveling, 801 is a point s where the vehicle A401 is traveling, 802 is a point u where the vehicle B402 is traveling, 803 is a point v where the pedestrian A600 is walking, and 900 is a vehicle 400. , A communication area A in which the inter-vehicle wireless communication unit 203 of the in-vehicle wireless device 300 mounted on the vehicle A 401 and the vehicle B 402 is in a communicable state, and 901 is a pedestrian of the in-vehicle wireless device 300 mounted on the vehicle 400. This is a communication area B in which the inter-vehicle wireless communication unit 504 installed in the inter-wireless communication unit 201 and the mobile phone device 500 can communicate.

  FIG. 10 is a sequence diagram in which vehicle 400 and mobile phone device 500 transmit and receive vehicle travel information and pedestrian information. FIG. 11 is a flowchart of application processing in which the navigation control unit 101 transmits / receives vehicle travel information and pedestrian information to / from other vehicles and mobile phone devices.

  FIG. 12 is a flowchart showing a vehicle travel information reception process from another vehicle in the application process of the navigation control unit 101. FIG. 13 is a flowchart showing pedestrian information reception processing from the mobile phone device in the application processing of the navigation control unit 101. FIG. 14 is a flowchart showing the transmission vehicle travel information update process in the application process of the navigation control unit 101.

  FIG. 15 is a flowchart of control processing of the communication control unit 205, data reception processing from the pedestrian wireless communication unit 201 and inter-vehicle wireless communication unit 203, vehicle travel information update notification processing from the navigation unit 100, vehicle A travel information transmission request process is performed. FIG. 16 is a flowchart showing details of data reception processing of the communication control unit 205.

  FIG. 17 is a flowchart of the inter-vehicle communication process in the vehicle information processing unit 505 of the mobile phone device 500. FIG. 18 is a diagram illustrating an example of a case where the content is displayed on the display of the output unit 102 when the navigation control unit 101 receives vehicle travel information from another vehicle or pedestrian information from the mobile phone device. is there. 1801 is a display A indicating the approach of the vehicle from the rear, and 1802 is a display B indicating the presence of a pedestrian on the left of the front intersection.

  Next, in the vehicle-to-vehicle and person-to-vehicle communication system according to the embodiment of the present invention, the in-vehicle communication device 300 and the mobile phone device 500 transmit and receive vehicle travel information and pedestrian information. 18 will be described.

  As shown in the example of FIG. 9, the inter-vehicle and inter-vehicle communication system of the present embodiment is composed of a plurality of vehicles traveling on a road and a pedestrian carrying a mobile phone device. The own vehicle 400 sends and receives vehicle travel information wirelessly to and from other vehicles that travel around the vehicle, and notifies the travel information of the host vehicle to the surroundings, and acquires the travel status of other vehicles that travel around the vehicle. Moreover, the approach of a vehicle is notified by transmitting the vehicle travel information of the own vehicle also to the mobile phone device possessed by the pedestrian. In this embodiment, the vehicle is premised on multicast type communication in which vehicle travel information is transmitted to all other vehicles in a communicable area and mobile phone devices possessed by pedestrians. However, the present invention is not limited to this.

  An outline of communication processing between the vehicle 400 and the mobile phone device 500 will be described with reference to a communication sequence between the vehicle 400 and the mobile phone device 500 shown in FIG.

  In FIG. 10, while the vehicle 400 is traveling, the communication control unit 200 repeatedly performs the vehicle travel information transmission process at regular intervals (s-second intervals) (S1001). Although the activation method of the transmission process is not mentioned here, it may be automatically started when the in-vehicle communication device 300 is activated, or may be started by an operation setting of the driver. When the vehicle 400 and the mobile phone device 500 are outside the communication area, the mobile phone device 500 does not receive the vehicle travel information (S1002), and thus pedestrian information is not transmitted. When the mobile phone device 500 enters the communication area and receives the vehicle travel information from the vehicle 400 (S1003), the pedestrian information transmission process is started at regular intervals (t-second intervals). (S1004) Thereby, the vehicle 400 receives pedestrian information (S1005). When the mobile phone device 500 is communicating with the vehicle 400 after a certain time has elapsed (when reception of new vehicle travel information is detected), the mobile phone device 500 transmits pedestrian information again (S1006). When communication with the vehicle 400 is disconnected (when reception of new vehicle travel information is not detected), the pedestrian information transmission process is stopped (S1007).

  Thus, the vehicle travel information communicated between the vehicles is periodically transmitted by each vehicle, and the mobile phone device 500 determines that communication with the vehicle is possible by receiving the vehicle travel information, and during the communicable period Send pedestrian information to only periodically.

  Next, a detailed operation when data communication is performed with another vehicle in which the vehicle 400 travels around and the mobile phone device 500 possessed by a pedestrian walking around the vehicle 400 will be described. In the navigation unit 100, the navigation control unit 101 receives the vehicle traveling information of the own vehicle to be transmitted to the other vehicle and the mobile phone device traveling in the vicinity, the vehicle traveling information received from the other vehicle, and the mobile phone device. Analyzes and displays pedestrian information.

  11, the navigation control unit 101 shown in FIG. 1 performs a vehicle travel information reception process when the wireless communication control unit 104 is notified that the wireless communication unit 200 has received vehicle travel information of another vehicle (S1101). (S1102). In FIG. 12, the received vehicle travel information of the other vehicle is stored in the other vehicle travel information storage unit 1016 shown in FIG. 2 (S1201), and the position from the host vehicle is calculated from the position information (longitude, latitude) (S1202). . If the distance from the own vehicle is within a certain range (S1203), 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. (S1204).

  In the case of data from unreceived vehicles, 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. "(1801) is notified by voice (S1205). 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 (S1206), the corresponding vehicle position is identified 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 (S1207). At this time, if the distance from the own vehicle is approaching within a certain range, a notification may be given by voice of “the vehicle is approaching from behind” (1801). If the voice notification is performed at the time of the previous reception, the voice notification may be performed again after a predetermined time has elapsed. If it has not been updated, the process ends.

  In FIG. 11, when the navigation control unit 101 receives a pedestrian information reception notification from the mobile phone device 500 from the wireless communication control unit 104 (S1103), the navigation control unit 101 performs a pedestrian information reception process (S1104). In FIG. 13, the received pedestrian information is stored in the pedestrian information storage unit 1017 shown in FIG. 2 (S1301), and the position from the host vehicle is calculated from the position information (longitude, latitude) (S1302). If the distance from the host vehicle is within a certain range (S1303), it is determined from the received data stored in the pedestrian information storage unit 1017 whether the data is already received from the mobile ID of the received pedestrian information. (S1304). In the case of data from an unreceived mobile phone device, the location is specified, and as shown in FIG. 18, a map image displaying the pedestrian mark together with the vehicle mark and the other vehicle mark is displayed on the output unit 102. There is a person on the left side of the intersection "(1802) is notified by voice (S1305).

  On the other hand, in the case of already received data, it is compared with the previously received data, and if it has been updated (S1306), the corresponding pedestrian is identified according to the updated contents, and a map image displaying the pedestrian mark is output in the same manner. The information is displayed on the unit 102 (S1307). When the distance from the pedestrian approaches within a certain range, the voice notification “There is a person on the left side of the front intersection” (1802) may be performed. If the voice notification is performed at the time of the previous reception, the voice notification may be performed again after a predetermined time has elapsed. If it has not been updated, the process ends.

  In addition, in FIG. 11, the navigation control unit 101 activates the own vehicle travel information update cycle timer in order to periodically acquire and update the vehicle travel information of the own vehicle after the in-vehicle communication device 300 is activated. When the timer expires (S1105), vehicle travel information update processing is started (S1106). In FIG. 14, when the control unit 1018 acquires vehicle travel information from the vehicle information acquisition unit 1015 (S1401), the control unit 1018 transmits a vehicle travel information update request to the communication control unit 205 (S1402). After that, the host vehicle travel information update cycle timer is started again (S1403), and the same processing is repeated when the timer expires.

  Next, the operation of the wireless communication unit 200 shown in FIG. 1 will be described. The communication control unit 205 periodically makes a transmission request for vehicle travel information of the host vehicle to the inter-pedestrian radio communication unit 201 and the inter-vehicle radio communication unit 203. The communication control unit 205 separately includes a pedestrian transmission cycle timer that generates data transmission timing from the inter-pedestrian wireless communication unit 201 and a vehicle transmission cycle timer that generates data transmission timing from the inter-vehicle wireless communication unit 203. The transmission request process is performed each time the timer is started.

  In FIG. 15, when the pedestrian wireless communication unit 201 receives pedestrian information, or when the inter-vehicle wireless communication unit 203 receives vehicle travel information of another vehicle (S1501), the communication control unit 205 performs data reception processing. (S1502). In FIG. 16, when the reception of the vehicle driving information or the pedestrian information is confirmed (S1601), it is confirmed whether the data has already been received (S1602). If the data has been received, the data is discarded (S1603) and the data receiving process is ended. To do. In the case of unreceived data, the received vehicle travel information is transmitted to the navigation unit 100 via the navigation interface unit 2051 (S1604).

  In FIG. 15, when the communication control unit 205 receives an update notification of the vehicle travel information of the host vehicle from the navigation unit 100 (S1503), it sets the vehicle travel information in the transmission data storage unit 2053 (S1504).

  On the other hand, when the communication control unit 205 detects that the own vehicle travel information transmission cycle timer has ended (S1505), it determines whether it is a pedestrian transmission cycle timer or a vehicle transmission cycle timer (S1506). In the case of the transmission cycle timer, the vehicle travel information of the host vehicle stored in the transmission data storage unit 2053 is transmitted to the inter-vehicle wireless communication unit 203 (S1507). In the case of the pedestrian transmission cycle timer, the vehicle running information of the host vehicle stored in the transmission data storage unit 2053 is transmitted to the walking inter-vehicle wireless communication unit 201 (S1508). Each 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 communication control unit 205 restarts the ended timer (S1509) (S1510).

  Next, an operation in which the vehicle information processing unit 505 of the mobile phone device 500 receives vehicle travel information and transmits pedestrian information will be described.

  In FIG. 17, when the vehicle information processing unit 505 of the mobile phone device 500 receives the vehicle travel information via the inter-vehicle wireless communication unit 504 (S1701), the vehicle information processing unit 505 sets the inter-vehicle wireless communication unit 504 during communication (S1702). It is confirmed whether or not the received data is already received data (S1703). If it is already received data, it is discarded (S1704), and the process is terminated.

  In the case of unreceived data, the distance between the vehicle and the mobile phone device 500 is calculated from the location information of the mobile phone device 500 acquired from the location information acquisition unit 506 and the location information (latitude / longitude) acquired from the received vehicle travel information ( S1705). If the distance from the vehicle is within a predetermined range, it is determined as a dangerous area (S1706), and the mobile phone control unit 507 is requested to display the approaching vehicle on the display unit 501 (S1707). .

  In response to this, the display unit 501 performs image display and audio notification indicating vehicle approach and notifies the pedestrian A600. Here, as a method of notifying the approach of the vehicle, an operation of vibrating the mobile phone device 500 may be performed.

  Next, the vehicle information processing unit 505 confirms the operation start of the pedestrian information transmission cycle timer that notifies the transmission timing of the pedestrian information (S1708), and starts the timer if it has not been started (S1709). When a notification of completion of the pedestrian information transmission cycle timer is received (S1712), it is checked whether or not the inter-vehicle wireless communication unit 504 is communicating (S1713). The position information of the device 500 is acquired (S1714), the pedestrian travel direction is calculated from the position information so far, the pedestrian information shown in FIG. 8 is constructed, and then transmitted from the inter-vehicle wireless communication unit 504. (S1715). Thereafter, the pedestrian information transmission cycle timer is started (S1716). When it is detected that the vehicle wireless communication unit 504 has not received vehicle travel information for a certain period (S1710), the inter-vehicle wireless communication unit 504 is set to a disconnected state (S1711).

  In the communication situation shown in FIG. 9, the vehicle 400 is in a communicable area with the vehicle A401 located behind, the vehicle B402 traveling in the opposite lane, and the mobile phone device 500 possessed by the pedestrian A600. Further, the vehicle A 401 and the mobile phone device 500 located at the s point 801 are out of the communication range, and the vehicle B 402 and the mobile phone device 500 located at the u point 802 are out of the communication range.

  In the inter-vehicle wireless communication unit 203 used for communication between vehicles, the transmission output is set larger than that of the pedestrian wireless communication unit 201 used for communication between the vehicle and the mobile phone device. This is because, since the vehicle moves at a higher speed than between the pedestrian and the vehicle, the time from when the vehicle traveling information is received until the vehicle actually approaches the target vehicle is increased.

  As a result, the vehicle-to-vehicle communication area A900 is wider than the vehicle-to-mobile phone device communication area B901, and it is possible to transmit the vehicle running information of the vehicle to a vehicle located far away. On the other hand, in communication between pedestrians and vehicles, it is possible to make the communication area narrower than between vehicles because the time from when the pedestrian receives vehicle travel information until it actually approaches the target vehicle is slower than between vehicles. It becomes.

  Accordingly, the transmission output of the pedestrian wireless communication unit 201 of the wireless communication unit 200 is set smaller than the transmission output of the inter-vehicle wireless communication unit 203 together with the transmission output of the inter-vehicle wireless communication unit 504 mounted on the mobile phone device 500. . As a result, the communication area B901 between the vehicle and the mobile phone device is narrower than the communication area A900 between vehicles. Thus, since the transmission output of the vehicle-to-vehicle wireless communication unit 504 can be set small, the power consumption of the mobile phone device 500 can be reduced.

  An in-vehicle communication device 300 according to an embodiment of the present invention includes an inter-vehicle wireless communication unit 203 for wirelessly communicating vehicle travel information between vehicles, and an inter-pedestrian wireless communication unit 201 for wirelessly communicating with a vehicle and a mobile phone device. Both the vehicle travel information is periodically transmitted from both the pedestrian wireless communication unit 201 and the inter-vehicle wireless communication unit 203.

  On the other hand, the mobile phone device 500 includes the inter-vehicle wireless communication unit 504 that can communicate with the inter-pedestrian wireless communication unit 201, but does not include the wireless communication processing unit that can communicate with the inter-vehicle wireless communication unit 203. The vehicle travel information transmitted from the inter-wireless communication unit 203 is not received. Only the vehicle travel information transmitted from the pedestrian wireless communication unit 201 of the vehicle existing in the communicable area is received.

  Thus, the timing and frequency of providing vehicle travel information for vehicles by providing communication processing units for the vehicle and pedestrians separately in the in-vehicle communication device 300, and the timing of providing vehicle travel information for pedestrians And the frequency can be set separately, and transmission control without performing unnecessary wireless data communication becomes possible. For example, by setting the cycle for transmitting vehicle travel information to be transmitted for vehicles to be shorter than the cycle for transmitting to pedestrians, it is possible to quickly notify the vehicle travel information of the host vehicle to surrounding vehicles. In addition, since the vehicle travel information is notified to the pedestrian with the minimum necessary transmission frequency, it is possible to reduce the power consumption due to the data reception processing of the mobile phone device 500.

  In addition, since the mobile phone device 500 receives only the vehicle travel information from the pedestrian wireless communication unit 201 existing in the communicable area, it is possible not to waste power.

A vehicle-to-vehicle wireless communication unit 203 that performs wireless communication between vehicles described in the present embodiment uses a UHF (Ultra High Frequency) band, and performs wireless communication between a vehicle and a mobile phone device. The inter-vehicle wireless communication unit 504 is a DSRC (Dedicated Short Range).
5.8 GHz used in Communication) may be used. The radio wave characteristics of the UHF band can take a wider communication area than the 5.8 GHz band, and the characteristics of non-line-of-sight communication are good, so it is effective for the use of communication between vehicles. In addition, since the size of the antenna can be made smaller than that of the UHF band due to the characteristics of the radio wave in the 5.8 GHz band, it is effective for mounting a small communication terminal such as a mobile phone device.

  In the present embodiment, the case where only the vehicle 400 and the mobile phone device 500 exist in the communicable area between the vehicle and the mobile phone device has been described. For example, when another vehicle exists in an area where communication with the mobile phone device 500 is possible and the vehicle travel information is transmitted, the mobile phone device 500 receives the vehicle travel information from two vehicles. The pedestrian information is transmitted at a constant cycle as shown in FIG. Thereby, since unnecessary pedestrian information is not transmitted from the mobile phone device 500, it is possible to prevent the occurrence of communication failure such as congestion.

  In the inter-vehicle and inter-vehicle communication system according to the embodiment of the present invention, the transmission output of the inter-vehicle wireless communication unit 203 at the time of data transmission in the in-vehicle communication device 300 is set larger than the transmission output of the pedestrian wireless communication unit 201. Thus, the inter-vehicle communication area becomes wider than the communication area between the vehicle and the mobile phone device, but the transmission output from the in-vehicle communication device 300 is the same in the inter-vehicle wireless communication unit 203 and the pedestrian wireless communication unit 201. In addition, a reception level measurement function is provided in the inter-vehicle wireless communication unit 504 of the mobile phone device 500. When the reception level does not reach a predetermined level or higher, only reception data display processing is performed and pedestrian information transmission processing is performed. By operating in such a manner, it is possible not to consume extra power consumed by data transmission processing in the mobile phone device 500.

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

  FIG. 19 is a diagram showing an example of the overall configuration of the in-vehicle communication device used in the present invention. The navigation device 100 and the vehicle 400 are the same as those shown in FIG. 1, 301 is an in-vehicle communication device that includes the navigation unit 100 and the wireless communication unit 1900, and 1900 is between another vehicle A 401 and the mobile phone device 500. Is a wireless communication unit that wirelessly communicates vehicle traveling information indicating the traveling state of the vehicle, position information of the mobile phone device 500 possessed by the pedestrian A600 and pedestrian information indicating the moving direction, and 2050 is wireless communication. 2060 is a transmission process of the vehicle running information of the own vehicle, a reception process of pedestrian information from other mobile phones, and a reception of vehicle running information from other vehicles. A person-to-vehicle / vehicle-to-vehicle wireless communication unit 2070 for processing includes a communication antenna used for wireless data transmission / reception of the person-to-vehicle / vehicle-to-vehicle wireless communication unit 2060.

  FIG. 20 is a diagram illustrating an example of the internal configuration of the person-to-vehicle / vehicle-to-vehicle wireless communication unit 2060. 2061 is a transmission unit that performs data transmission processing in response to a request from the communication processing unit 2064, 2065 is a pedestrian information transmission unit that performs transmission processing for pedestrians, and 2066 is vehicle travel information transmission that performs transmission processing for vehicles. The unit 2067 includes a transmission switch for switching between the pedestrian information transmission unit 2065 and the vehicle travel information transmission unit 2066.

  Reference numeral 2062 denotes a receiving unit that receives data from the communication antenna, 2068 denotes a pedestrian information receiving unit that performs reception processing of pedestrian information, 2069 denotes a vehicle driving information receiving unit that performs receiving processing of vehicle driving information, and 2071 denotes walking. The person information receiving unit 2068 and the vehicle travel information receiving unit 2069 are configured by a receiving switch for switching.

  2063 is a switch for switching between transmission processing and reception processing, 2064 is a switch processing of the switch 2063, switch 2067, and switch 2071, and a communication processing unit that performs data input / output with the transmission unit 2061, the reception unit 2062, and the communication control unit 2050, It is.

  The communication processing unit 2064 performs switching processing of the switch 2067 and the switch 2071 according to transmission / reception processing of pedestrian data and vehicle data. In the present embodiment, on a wireless system in which frequency bands of one channel (channel for pedestrians) for transmission / reception between vehicles and pedestrians and one channel (channel for vehicles) for transmission / reception between vehicles are allocated. Data transmission / reception will be performed.

  Accordingly, the pedestrian information transmission unit 2065 transmits the requested pedestrian transmission data using the pedestrian channel. In addition, the vehicle travel information transmission unit 2066 transmits the requested vehicle transmission data using the vehicle channel. The pedestrian information receiving unit 2068 receives data sent using the pedestrian channel, and the vehicle travel information receiving unit 2069 receives data sent using the vehicle channel.

  On the other hand, when the communication processing unit 2064 receives a data transmission request from the communication control unit 2050, the communication processing unit 2064 checks the usage status of the surrounding wireless transmission channels, and sets the transmission data in the transmission unit 2061 when the data is not being used. Data is transmitted by switching 2063 to the transmission unit 2061 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 CSMA / CA (Carrier Sense Multiplex).
This is called an “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 2063 switches to the reception unit 2062 side. In addition, when the reception data is acquired from the reception unit 2062, it is transmitted to the communication control unit 2050.

  FIG. 21 is a diagram illustrating an example of the internal configuration of the communication control unit 2050. Reference numeral 2151 denotes a communication control processor 2060 for performing data input / output control processing with the navigation system 100, and 2152 denotes the communication control processor 2151 and the wireless communication unit 2060 between the vehicle and the vehicle. It is a vehicle-to-vehicle communication interface unit that inputs and outputs data between them, and the other parts perform the same operation as the communication control unit 205 shown in FIG.

  FIG. 22 is a flowchart of control processing of the communication control unit 2050. Data reception processing from the human-vehicle / vehicle-to-vehicle wireless communication unit 2060, vehicle travel information update notification processing from the navigation unit 100, and vehicle travel information transmission request. Process.

  FIG. 23 is a control processing flowchart of the person-to-vehicle / vehicle-to-vehicle wireless communication unit 2060, which performs vehicle travel information transmission processing, pedestrian information, and vehicle travel information reception processing.

  Next, FIG. 2 and FIG. 5 to FIG. 5 show the operation of transmitting and receiving vehicle travel information and pedestrian information in the in-vehicle communication device 301 and the portable communication device 500 in the inter-vehicle and inter-vehicle communication system of the embodiment of the present invention. 14 and FIG. 16 to FIG.

  An operation when the in-vehicle communication device 301 mounted on the vehicle 400 transmits / receives vehicle travel information and pedestrian information to / from other vehicles and the mobile phone device 500 located in the vicinity will be described.

  The inter-vehicle and inter-vehicle communication system of the present embodiment is composed of a plurality of vehicles traveling on the road and a pedestrian carrying a mobile phone device, as in the first embodiment. The vehicle is premised on multicast type communication in which vehicle travel information is transmitted to all other vehicles in a communicable area and mobile phone devices possessed by pedestrians.

  The communication sequence between the vehicle and the mobile phone device is the same as that in the first embodiment shown in FIG. The cellular phone device 500 performs the same operation as in the first embodiment. However, when the inter-vehicle wireless communication unit 504 transmits and receives data, a channel for pedestrians is used. Moreover, the navigation part 100 mounted in the vehicle-mounted communication apparatus 301 performs the same operation | movement as the navigation part 100 mounted in the vehicle-mounted communication apparatus 300 demonstrated in the 1st Example.

  Next, the operation of the wireless communication unit 1900 will be described. The communication control unit 2050 periodically makes a transmission request for vehicle travel information of the host vehicle to the person-vehicle / vehicle-to-vehicle wireless communication unit 2060. The communication control unit 2050 generates a transmission period timer for pedestrians for generating data transmission timing from the pedestrian / vehicle-to-vehicle wireless communication unit 2060 for pedestrians, and transmits data from the pedestrian / vehicle-to-vehicle wireless communication unit 2060 for vehicles. The transmission cycle timers for vehicles that generate the timing to be started are separately started, and a transmission request process is performed on the person-to-vehicle / vehicle-to-vehicle wireless communication unit 2060 each time each timer ends.

  In FIG. 22, when data is received from the person-vehicle-to-vehicle wireless communication unit 2060 (S2201), the communication control processing unit 2151 performs a data reception process (S2202). The data reception process is the same as the reception process of the communication control unit 205 described in the first embodiment. Further, when the communication control unit 2050 receives an update notification of the vehicle travel information of the host vehicle from the navigation unit 100 (S2203), it sets the vehicle travel information in the transmission data storage unit 2053 (S2204). .

  On the other hand, when it is detected that the own vehicle travel information transmission cycle timer set by the communication control unit 2050 has ended (S2205), it is determined whether it is a pedestrian transmission cycle timer or a vehicle transmission cycle timer (S2206). In the case of the transmission cycle timer, the vehicle-to-vehicle transmission request is made to the person-to-vehicle / vehicle-to-vehicle wireless communication unit 2060 and the vehicle travel information of the own vehicle is transmitted (S2207).

  On the other hand, in the case of the pedestrian transmission cycle timer, a pedestrian transmission request is made to the pedestrian / vehicle-to-vehicle wireless communication unit 2060 to transmit vehicle travel information of the own vehicle (S2208). Thereafter, the terminated timer is restarted (S2209) (S2210).

  Next, the operation of the inter-pedestrian vehicle wireless communication unit 2060 will be described. The communication processing unit 2064 performs pedestrian information reception and vehicle travel information reception processing by periodically switching the switch 2071.

  In FIG. 23, the reception processing cycle timer for generating the switching timing of the switch 2071 is started, and when the timer is stopped (S2301), the switch 2071 is switched (S2302), and the reception processing cycle timer is restarted (S2303). When data is received by the pedestrian information receiving unit 2068 when the switch 2071 is connected to the pedestrian information receiving unit 2068 (S2304), the received data is transmitted to the communication control unit 2050 (S2305).

  Similarly, when the vehicle travel information receiving unit 2069 receives data when the switch 2071 is connected to the vehicle travel information receiving unit 2069 (S2306), the received data is transmitted to the communication control unit 2050 (S2307). In addition, the person-to-vehicle / vehicle-to-vehicle wireless communication unit 2060 periodically switches the switch 2071 to perform data reception processing in the pedestrian information receiving unit 2068 and the vehicle travel information receiving unit 2069, so that the vehicle and the mobile phone device Receives data sent using different frequency channels.

  When the communication processing unit 2064 receives a data transmission request from the communication control unit 2050 (S2308), it checks whether the received transmission request is for a vehicle or a pedestrian (S2309). Switching to the pedestrian information transmission unit 2065 side (S2310), after performing the CSMA / CA processing, the requested transmission data is set (S2311), and the pedestrian information transmission unit 2065 transmits data using the pedestrian channel. To do. In the case of a vehicle, the switch 2067 is switched to the vehicle travel information transmission unit 2066 (S2312), the CSMA / CA process is performed, the requested transmission data is set (S2313), and the vehicle travel information transmission unit 2066 Send data using the target channel.

  The communication state shown in FIG. 9 is in a region where the vehicle 400 can communicate with the vehicle A401 located behind, the vehicle B402 traveling in the opposite lane, and the mobile phone device 500 possessed by the pedestrian A600. Further, the vehicle A 401 and the mobile phone device 500 located at the s point 801 are out of the communication range, and the vehicle B 402 and the mobile phone device 500 located at the u point 802 are out of the communication range.

  The vehicle travel information transmission unit 2066 used for communication between vehicles sets a transmission output larger than that of the pedestrian information transmission unit 2065 used for communication between the vehicle and the mobile phone device. This is because, since the vehicle moves at a higher speed than between the pedestrian and the vehicle, the time from when the vehicle traveling information is received until the vehicle actually approaches the target vehicle is increased. As a result, the vehicle-to-vehicle communication area A900 becomes wider than the vehicle-to-mobile phone communication area B901, and it is possible to transmit the vehicle travel information of the vehicle to a vehicle located far away.

  On the other hand, in communication between pedestrians and vehicles, it is possible to make the communication area narrower than between vehicles because the time from when the pedestrian receives vehicle travel information until it actually approaches the target vehicle is slower than between vehicles. It becomes. Therefore, the transmission output of the pedestrian information transmission unit 2065 is set to be smaller than the transmission output of the vehicle travel information transmission unit 2066 together with the transmission output of the inter-vehicle wireless communication unit 504 mounted on the mobile phone device 500.

  As a result, the communication area B901 between the vehicle and the mobile phone device is narrower than the communication area A900 between the vehicles. Thus, since the transmission output of the vehicle-to-vehicle wireless communication unit 504 can be set small, the power consumption of the mobile phone device 500 can be reduced.

  The in-vehicle communication device 301 according to the embodiment of the present invention wirelessly communicates vehicle travel information between vehicles, and wirelessly communicates between the vehicle and the pedestrian information between the vehicle and the mobile phone. It is equipped with. The person-to-vehicle / vehicle-to-vehicle wireless communication unit 2060 switches the frequency between the pedestrian channel and the vehicle channel when transmitting the vehicle travel information.

  On the other hand, the mobile phone device 500 includes an inter-vehicle wireless communication unit 504 that can communicate with the person-vehicle / vehicle wireless communication unit 2060, and uses a channel for pedestrians from the person-vehicle / vehicle wireless communication unit 2060. The vehicle travel information transmitted is received. Further, the vehicle information transmitted to the vehicle is not received because the vehicle channel is used and the frequency is different.

  Thus, the timing for providing vehicle travel information for a vehicle and the timing for providing vehicle travel information for a pedestrian are set separately by dividing the frequency channel for the vehicle and the pedestrian in the in-vehicle communication device 300. Transmission control without performing unnecessary wireless data communication becomes possible.

  For example, by setting the cycle for transmitting vehicle travel information to be transmitted for vehicles to be shorter than the cycle for transmitting to pedestrians, it is possible to quickly notify the vehicle travel information of the host vehicle to surrounding vehicles. In addition, since the vehicle travel information is notified to the pedestrian with the minimum necessary transmission frequency, it is possible to reduce the power consumption due to the data reception processing of the mobile phone device 500.

  In addition, since the mobile phone device 500 receives only the vehicle travel information from the pedestrian wireless communication unit 201 existing in the communicable area, it is possible not to waste power.

  In the inter-vehicle and inter-vehicle communication system of the embodiment of the present invention, by setting the transmission output of the vehicle travel information transmission unit 2066 at the time of data transmission in the in-vehicle communication device 301 larger than the transmission output of the pedestrian information transmission unit 2065. The vehicle-to-vehicle communication area is configured to be wider than the vehicle-to-mobile phone device communication area, but the transmission output from the in-vehicle communication device 301 is the same in the vehicle travel information transmission unit 2066 and the pedestrian information transmission unit 2065. In the inter-vehicle wireless communication unit 504 of the mobile phone device 500, a reception level measurement function is provided, and when the reception level does not reach a predetermined level or higher, only reception data display processing is performed and pedestrian information transmission processing is not performed. By operating in the same manner, it is possible to avoid excessive power consumption due to data transmission processing in the mobile phone device 500.

  A third embodiment of the inter-vehicle and inter-vehicle communication system of the present invention will be described with reference to the drawings.

  FIG. 24 is a diagram showing an example of the overall configuration of the in-vehicle communication device used in the present invention. The navigation device 100 and the vehicle 400 are the same as those shown in FIG. 1, 302 is an in-vehicle communication device composed of the navigation unit 100 and the wireless communication unit 2400, and 2400 is between another vehicle A 401 and the mobile phone device 500. 2450 is a wireless communication unit that wirelessly communicates vehicle travel information indicating the travel status of the vehicle and position information of the mobile phone device 500 possessed by the pedestrian A600 and pedestrian information indicating the movement direction. 2460 is a communication control unit that performs control processing of each unit in unit 2400, 2460 is a process for transmitting vehicle travel information of the host vehicle, a process for receiving pedestrian information from other mobile phones, and a reception of vehicle travel information from other vehicles. A person-to-vehicle / vehicle-to-vehicle wireless communication unit 2470 that performs processing includes a communication antenna used for wireless data transmission / reception of the person-to-vehicle / vehicle-to-vehicle wireless communication unit 2460.

  FIG. 25 is a diagram illustrating an example of the internal configuration of the person-to-vehicle / vehicle-to-vehicle wireless communication unit 2460. 2511 is a transmission unit that performs data transmission processing in response to a request from the communication processing unit 2514, 2512 is a reception unit that receives data from the pedestrian antenna 2470, 2513 is a switch for switching between transmission processing and reception processing, and 2514 is a switch. 2513, a transmission unit 2511, a reception unit 2512, and a communication control unit 2450, and a communication processing unit that performs data input / output.

  When the pedestrian vehicle communication processing unit 2460 receives a data transmission request from the communication control unit 2450, the pedestrian vehicle communication processing unit 2460 checks the usage state of the surrounding wireless transmission channel, and sets the transmission data to the transmission unit 2511 when not used. The switch 2513 is switched to the transmission unit 2511 side to perform data transmission. 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 CSMA / CA (Carrier Sense Multiplex).
This is called an “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 2513 switches to the receiving unit 2512 side. Further, when data is received by the receiving unit 2512, the data is transmitted to the communication control unit 2450.

  FIG. 26 is a diagram illustrating an example of the internal configuration of the communication control unit 2450. Reference numeral 2651 denotes a communication control processing unit that performs input / output control processing of data with the person-to-vehicle / vehicle-to-vehicle wireless communication unit 2460 and the navigation unit 100. Reference numeral 2652 denotes a communication control processing unit 2651 It is a vehicle-to-vehicle communication interface unit that inputs and outputs data between them, and the other parts perform the same operation as the communication control unit 2050 shown in FIG.

  FIG. 27 is a table showing an example of the contents of vehicle travel information transmitted and received between vehicles and transmitted to pedestrians. As the data element, transmission destination information indicating a destination to which data is transmitted and transmission source information indicating transmission source information are added to the head of the vehicle travel information illustrated in FIG. In the first embodiment, the information up to the accelerator below the own vehicle ID is configured to be acquired and set by the navigation control unit 101. However, in this embodiment, the information up to the accelerator below the own vehicle ID as in the first embodiment. Is acquired and set by the navigation control unit 101, and the transmission destination information and the transmission source information are added by the communication control unit 2450 and transmitted from the person-vehicle-to-vehicle wireless communication unit 2460.

  In FIG. 27, the transmission destination information is 0: no distinction (received by all terminals), 1: vehicle, 2: mobile, 3-15: reservation, but other terminals are set using the reserved area. It doesn't matter. The destination information can only be set up to 15 types with 1 byte, but it may be set to 2 bytes or more. Similarly, the transmission source information is also composed of 1 byte, but it may be set to 2 bytes or more.

  FIG. 28 is a diagram illustrating an example of the overall configuration of a mobile phone device 5000 that receives vehicle travel information from a vehicle traveling in the vicinity and transmits pedestrian information indicating its own position information and movement direction to the surrounding vehicle. is there.

  5050 is a vehicle information processing unit that processes vehicle driving information received from a vehicle traveling in the vicinity and generates pedestrian information and performs transmission control. 5051 is a part of a component of the vehicle information processing unit 5050. The vehicle information reception determination unit that performs analysis processing of vehicle travel information, and other parts are the same as the components of the mobile phone device 500 shown in FIG.

  FIG. 29 is a table showing an example of the contents of the pedestrian information indicating the position information and the moving direction of the pedestrian that the mobile phone device 5000 transmits to a vehicle traveling around. As the data element, transmission destination information indicating a destination to which data is transmitted and transmission source information indicating transmission source information are added to the head of the pedestrian information shown in FIG. As in the first embodiment, the vehicle information processing unit 5050 generates the transmission destination information and the transmission source information in addition to the information up to the direction of the portable ID and transmits the information from the inter-vehicle wireless communication unit 504.

  In FIG. 29, the transmission destination information is 0: no distinction (received by all terminals), 1: vehicle, 2: mobile, 3-15: reservation, but other terminals are set using the reserved area. It doesn't matter. The destination information can only be set up to 15 types with 1 byte, but it may be set to 2 bytes or more. Similarly, the transmission source information has a 1-byte configuration, but 2 bytes or more may be set.

  FIG. 30 is a flowchart of the control process of the communication control unit 2450. The data reception process from the person-vehicle-to-vehicle wireless communication unit 2460, the vehicle travel information update notification process from the navigation unit 100, and the vehicle travel information transmission request. Process.

  FIG. 31 is a process flowchart in the inter-vehicle communication of the vehicle information processing unit 5050 of the mobile phone device 5000.

  Next, FIG. 2 and FIG. 9 to FIG. 9 show operations for transmitting and receiving vehicle travel information and pedestrian information in the in-vehicle communication device 302 and the portable communication device 5000 in the inter-vehicle and inter-vehicle communication system of the embodiment of the present invention. 14, FIG. 18, and FIGS.

  An operation when the in-vehicle communication device 302 mounted on the vehicle 400 transmits / receives vehicle travel information and pedestrian information to / from other vehicles located in the vicinity and the mobile phone device 500 will be described.

  The inter-vehicle and inter-vehicle communication system of the present embodiment is composed of a plurality of vehicles traveling on the road and a pedestrian carrying a mobile phone device, as in the first embodiment. The vehicle is premised on multicast type communication in which vehicle travel information is transmitted to all other vehicles in a communicable area and mobile phone devices possessed by pedestrians.

  As shown in FIG. 10, the communication sequence between the vehicle and the mobile phone device is the same as in the first embodiment. The navigation unit 100 installed in the in-vehicle communication device 302 performs the same operation as the navigation unit 100 installed in the in-vehicle communication device 300 described in the first embodiment.

  Next, the operation of the wireless communication unit 2400 will be described. The communication control unit 2450 periodically makes a transmission request for vehicle travel information of the host vehicle to the person-vehicle / vehicle-to-vehicle wireless communication unit 2460.

  The communication control processing unit 2651 is a pedestrian transmission cycle timer that generates a timing for transmitting data from the pedestrian / vehicle-to-vehicle wireless communication unit 2460 for pedestrians, and data from the pedestrian-to-vehicle wireless communication unit 2460 for vehicles. A vehicle transmission cycle timer for generating a transmission timing is started separately, and a transmission request process is performed on the person-vehicle / vehicle-to-vehicle wireless communication unit 2460 every time each timer ends.

  In FIG. 30, when data is received from the person-vehicle-to-vehicle wireless communication unit 2460 (S3001), the communication control processing unit 2651 performs data reception processing (S3002). The data reception process is the same as the reception process of the communication control unit 205 described in the first embodiment. When the communication control unit 2450 receives an update notification of the vehicle travel information of the host vehicle from the navigation unit 100 (S3003), the communication control unit 2450 sets the vehicle travel information in the transmission data storage unit 2053 (S3004). .

  On the other hand, when it is detected that the own vehicle travel information transmission cycle timer set by the communication control unit 2450 has ended (S3005), it is determined whether it is a transmission cycle timer for pedestrians or a transmission cycle timer for vehicles (S3006). In the case of the direction transmission cycle timer, a pedestrian is set as transmission destination information in the vehicle travel information stored in the transmission data storage unit 2053, and the vehicle is set as transmission source information. A transmission request is made to 2460, and the vehicle travel information of the host vehicle is transmitted (S3007).

  On the other hand, in the case of the vehicle transmission cycle timer, the vehicle is set as the transmission destination information in the vehicle travel information stored in the transmission data storage unit 2053, and a transmission request is made to the person-vehicle / vehicle-to-vehicle wireless communication unit 2460. Vehicle travel information is transmitted (S3008). Thereafter, the timers that have ended are restarted (S3009) (S3010).

  Next, an operation in which the vehicle information processing unit 5050 of the mobile phone device 5000 receives vehicle travel information and transmits pedestrian information will be described. In FIG. 31, when the vehicle information processing unit 5050 of the mobile phone device 5000 receives the vehicle travel information via the inter-vehicle wireless communication unit 504 (S3101), the vehicle information processing unit 5050 sets the inter-vehicle wireless communication unit 504 during communication (S3102). Next, the vehicle information reception determination unit 5051 analyzes the destination information of the vehicle travel information that is the received data, and if it is not “mobile”, the received data is discarded (S3104), and the process is terminated. If it is “mobile”, it is confirmed whether or not the next received data is already received data (S3105). If it is already received data, it is discarded (S3106), and the process is terminated. In the case of unreceived data, the distance between the vehicle and the mobile phone device 5000 is calculated from the location information of the mobile phone device 5000 acquired from the location information acquisition unit 506 and the location information (latitude / longitude) acquired from the received vehicle travel information ( S3107).

  If the distance from the vehicle is within a predetermined range, it is determined as a dangerous area (S3108), and the mobile phone control unit 507 is requested to display the approaching vehicle on the display unit 501 (S3109). . In response to this, the display unit 501 performs image display and audio notification indicating vehicle approach and notifies the pedestrian A600. Here, as a method of notifying the approach of the vehicle, an operation of vibrating the mobile phone device 5000 may be performed.

  Next, operation start confirmation of the pedestrian information transmission cycle timer for notifying the transmission timing of pedestrian information is performed (S3110). If not started, the timer is started (S3111). When the completion notification of the pedestrian information transmission cycle timer is received (S3114), it is checked whether or not the inter-vehicle wireless communication unit 504 is communicating (S3115). If the communication is in progress, the mobile phone device 5000 is received from the position information acquiring unit 506. (S3116), the transmission destination of the pedestrian information shown in FIG. 29 is set to the vehicle, the transmission source is set to mobile, other information is also set, and then transmitted from the inter-vehicle wireless communication unit 504 ( S3117). Thereafter, the pedestrian information transmission cycle timer is started (S3118).

  When it is detected that the vehicle wireless communication unit 504 has not received vehicle travel information for a certain period (S3112), the inter-vehicle wireless communication unit 504 is set to a disconnected state (S3113).

  In the present embodiment, the vehicle shown in FIG. 9 is equipped with the in-vehicle communication device 302 shown in FIG. 24, and the mobile phone device carried by the pedestrian A600 is hereinafter described as the mobile phone device 5000 shown in FIG. To do.

  In the communication state shown in FIG. 9, the vehicle 400 is in a communicable area with the vehicle A401 located behind, the vehicle B402 traveling in the opposite lane, and the mobile phone device 5000 possessed by the pedestrian A600. Further, the vehicle A 401 and the mobile phone device 5000 located at the s point 801 are out of the communication range, and the vehicle B 402 and the mobile phone device 5000 located at the u point 802 are out of the communication range.

  When the wireless communication unit 2400 sets a vehicle as transmission destination information, the transmission output of the transmission unit 2511 is set larger than when a pedestrian is set. This is because the distance traveled per unit time is greater between vehicles than between pedestrians and vehicles, and the time from when the vehicle travel information is received until the vehicle actually approaches the vehicle becomes faster. As a result, the vehicle-to-vehicle communication area A900 is wider than the vehicle-to-mobile phone device communication area B901, and it is possible to transmit the vehicle running information of the vehicle to a vehicle located far away.

  On the other hand, in communication between pedestrians and vehicles, it is possible to make the communication area narrower than between vehicles because the time from when the pedestrian receives vehicle travel information until it actually approaches the target vehicle is slower than between vehicles. It becomes. Therefore, when the transmission destination information is a pedestrian, the transmission output of the transmission unit 2511 is set smaller than the transmission output of the vehicle-to-vehicle wireless communication unit 504 mounted on the mobile phone device 5000 as compared to the case where the transmission destination information is a vehicle. As a result, the communication area B901 between the vehicle and the mobile phone device is narrower than the communication area A900 between the vehicles. Thus, since the transmission output of the inter-vehicle wireless communication unit 504 can be set small, the power consumption of the cellular phone device 5000 can be reduced.

  The in-vehicle communication device 302 according to the embodiment of the present invention wirelessly communicates vehicle traveling information between vehicles, and wirelessly communicates between the vehicle and the vehicle between the vehicle and the mobile phone, and communicates between the vehicle traveling information and the pedestrian information 2460. It is equipped with. The communication control unit 2450 sets the transmission destination by setting information for pedestrians and vehicles for the transmission destination information when transmitting the vehicle travel information. On the other hand, the mobile phone device 5000 includes a vehicle information reception determination unit 5051 that performs data reception determination based on the transmission destination information of the received vehicle travel information. The vehicle information processing unit 5050 transmits data transmitted to pedestrians. Only the mobile phone control unit 507 is notified, and the vehicle information transmitted to the vehicle is discarded.

  Thus, the timing for providing vehicle travel information for a vehicle by setting transmission destination information by dividing information for pedestrians and vehicles for vehicle travel information, and the timing for providing vehicle travel information for pedestrians Can be set separately, and transmission control without performing unnecessary wireless data communication becomes possible.

  For example, by setting the cycle for transmitting vehicle travel information to be transmitted for vehicles to be shorter than the cycle for transmitting to pedestrians, it is possible to quickly notify the vehicle travel information of the host vehicle to surrounding vehicles. In addition, since the vehicle travel information is notified to the pedestrian with the minimum necessary transmission frequency, it is possible to reduce the power consumption by the data reception processing of the mobile phone device 5000.

  In addition, since the mobile phone device 5000 receives only the pedestrian vehicle travel information existing within the communicable area, it is possible not to waste power.

  In the inter-vehicle and inter-vehicle communication system according to the embodiment of the present invention, when the in-vehicle communication device 302 transmits vehicle travel information, when the wireless communication unit 2400 sets a vehicle as transmission destination information, when a pedestrian is set By setting the transmission output of the transmission unit 2511 to be larger than the communication area between the vehicle and the mobile phone device, the vehicle-to-vehicle communication area is widened. Regardless of the pedestrian information, the inter-vehicle wireless communication unit 504 of the mobile phone device 5000 is provided with a reception level measurement function, and when the reception level does not reach a predetermined predetermined level or higher, only the reception data display process is performed. By operating so as not to perform the transmission process, it is possible to prevent excessive power consumption due to the data transmission process in the cellular phone device 5000. It does not.

  Further, according to the embodiment of the present invention, it is possible to provide a device that eliminates unnecessary information communication and notifies a driver and a pedestrian of the danger at a more appropriate opportunity.

  According to the embodiment of the present invention, the mobile communication device does not receive the vehicle travel information transmitted from the vehicle wireless communication means of the in-vehicle communication device, but is transmitted from the pedestrian wireless communication means of the in-vehicle communication device. Since the vehicle travel information transmitted to the vehicle is not received by receiving the vehicle travel information, the power consumption can be reduced.

  Also, according to the embodiment of the present invention, when transmitting and receiving the vehicle travel information with another vehicle using the wireless communication means of the in-vehicle communication device, the carrier frequency allocated for inter-vehicle communication is used, and walking When the vehicle travel information is transmitted / received to / from a portable communication device carried by a person, the mobile phone device is transmitted / received between vehicles by operating to use a carrier frequency allocated for pedestrian-to-vehicle communication. Since travel information is not received, power consumption can be reduced.

  Further, according to the embodiment of the present invention, when the in-vehicle communication device transmits the vehicle travel information to the mobile communication device carried by the pedestrian, the data indicating that the vehicle travel information is pedestrian information is included in the vehicle travel information. In addition, the mobile communication device operates to discard the received vehicle travel information when the received vehicle travel information is not for a pedestrian, so that the mobile phone device performs display processing on the vehicle travel information for the vehicle. Therefore, power consumption can be reduced.

  Further, according to the embodiment of the present invention, when the portable communication device detects a signal level above a certain level, the received data display processing and the walking acquired by the pedestrian information acquisition means by the portable terminal control means By performing the transmission process of the pedestrian information, it becomes possible to transmit the pedestrian information to the vehicle located at an appropriate distance in the vicinity.

  Further, according to the embodiment of the present invention, the mobile communication device transmits the pedestrian information to the in-vehicle communication device at a constant period during a period in which the vehicle travel information is received from the in-vehicle communication device within a predetermined time. By operating in this manner, it is possible to transmit pedestrian information having an appropriate amount of information even when there are a plurality of vehicles in the vicinity.

  In addition, according to the embodiment of the present invention, the transmission cycle of the vehicle travel information transmitted to the vehicle by the in-vehicle communication device and the transmission cycle of the vehicle travel information transmitted to the pedestrian are performed at different transmission intervals. It is possible to set the number of receptions of the communication device to an appropriate number and reduce power consumption.

  In addition, according to the embodiment of the present invention, by setting the transmission cycle of the vehicle travel information transmitted to the vehicle by the in-vehicle communication device to be shorter than the transmission cycle of the vehicle travel information transmitted to the pedestrian, It is possible to set the apparatus so that the number of times the vehicle travel information is received by the apparatus can be reduced, thereby reducing power consumption.

  Further, according to the embodiment of the present invention, the transmission output level when the in-vehicle communication device transmits the vehicle travel information for the vehicle and the transmission output level when the vehicle travel information is transmitted for the pedestrian are individually set. By setting the value, it becomes possible to appropriately set the communication area between the in-vehicle communication device and the communication area between the mobile phone device and the in-vehicle communication device, and power consumption of the mobile communication device due to reception of unnecessary vehicle information Can be reduced.

  Further, according to the embodiment of the present invention, the transmission output level when the in-vehicle communication device transmits the vehicle travel information for the vehicle is larger than the transmission output level when the vehicle travel information is transmitted for the pedestrian. By setting so that the communication area between the mobile phone device and the in-vehicle communication device can be set so that the mobile communication device does not receive unnecessary vehicle travel information, the power consumption of the mobile phone device can be reduced. .

FIG. 1 is a block diagram illustrating an overall configuration of an in-vehicle communication device used in a vehicle-to-vehicle and person-to-vehicle communication system according to a first embodiment of the present invention. It is the block diagram which showed one Example of the internal structure of the navigation control part in the vehicle-mounted communication apparatus used in the vehicle-to-vehicle and person-to-vehicle communication system of this invention. It is the block diagram which showed one Example of the internal structure of the radio | wireless communication part between pedestrians in the vehicle-mounted communication apparatus used in the vehicle-to-vehicle and person-to-vehicle communication system 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 in the vehicle-mounted communication apparatus used in the vehicle-to-vehicle and person-to-vehicle communication system of this invention. It is the block diagram which showed one Example of the internal structure of the communication control part in the vehicle-mounted communication apparatus used in the vehicle-vehicle communication system between the vehicles of this invention. It is a figure which shows one Example of the structure table | surface and data format of the vehicle travel information transmitted / received between vehicle-mounted communication apparatuses and between vehicle-mounted communication apparatuses and a mobile telephone apparatus in the vehicle-vehicle communication system of this invention. It is the block diagram which showed one Example of the whole structure of the mobile telephone apparatus used in the vehicle-to-vehicle and person-to-vehicle communication system of this invention. It is a figure which shows one Example of the structure table | surface and data format of pedestrian information transmitted / received between the mobile telephone apparatus of this invention, and a vehicle-mounted communication apparatus. FIG. 2 is a vehicle pedestrian layout diagram illustrating an example in which the vehicle performs wireless communication with surrounding vehicles and pedestrians in the inter-vehicle and inter-vehicle communication system of the present invention. FIG. 5 is a sequence diagram illustrating an embodiment in the case where vehicle travel information and pedestrian information are communicated between a vehicle and a mobile phone device in the inter-vehicle and inter-vehicle communication system of the present invention. It is a flowchart figure which shows one Example of the application process of the navigation control part of the vehicle-mounted communication apparatus used in the vehicle-vehicle communication system between the vehicles of this invention. It is a flowchart figure which shows one Example of a vehicle driving | running | working information reception process among the application processes of the navigation control part of the vehicle-mounted communication apparatus used in the vehicle-to-vehicle and person-to-vehicle communication system of this invention. It is a flowchart figure which shows one Example of a pedestrian information reception process among the application processes of the navigation control part of the vehicle-mounted communication apparatus used in the vehicle-vehicle communication system between the vehicles of this invention. It is a flowchart figure which shows one Example of a vehicle driving | running | working information update process among the application processes of the navigation control part of the vehicle-mounted communication apparatus used in the vehicle-to-vehicle and person-to-vehicle communication system of this invention. It is a flowchart figure which shows one Example of the control processing of the communication control part of the vehicle-mounted communication apparatus used in the vehicle-vehicle communication system between the vehicles of this invention, and a person-vehicle communication system. It is a flowchart figure which shows one Example of a data reception process among the control processes of the communication control part of the vehicle-mounted communication apparatus used in the communication system between the vehicles of vehicles of this invention, and a person-to-vehicle communication system. It is a flowchart figure which shows one Example of the control processing of the vehicle information processing part of the mobile telephone apparatus used in the inter-vehicle and person-to-vehicle communication system of this invention. One when the navigation control unit of the in-vehicle communication device used in the inter-vehicle and inter-vehicle communication system of the present invention displays the vehicle travel information received from another vehicle and the pedestrian information received from the pedestrian on the display of the output unit. It is a figure which shows an Example. FIG. 19 is a block diagram showing the overall configuration of an in-vehicle communication device used in the inter-vehicle and inter-vehicle communication system according to the second embodiment of the present invention. It is the block diagram which showed one Example of the internal structure of the person-vehicle / vehicle radio | wireless communication part in the vehicle-mounted communication apparatus used in the vehicle-vehicle and person-vehicle communication system of this invention. It is the block diagram which showed one Example of the internal structure of the communication control part in the vehicle-mounted communication apparatus used in the vehicle-vehicle communication system between the vehicles of this invention. It is a flowchart figure which shows one Example of the control processing of the communication control part of the vehicle-mounted communication apparatus used in the vehicle-vehicle communication system between the vehicles of this invention, and a person-vehicle communication system. It is a flowchart figure which shows one Example of the communication control process of the person-vehicle / vehicle radio | wireless communication part of the vehicle-mounted communication apparatus used in the vehicle-vehicle and person-vehicle communication system of this invention. FIG. 24 is a block diagram showing an overall configuration of an in-vehicle communication device used in the inter-vehicle and inter-vehicle communication system according to the third embodiment of the present invention. It is the block diagram which showed one Example of the internal structure of the person-vehicle / vehicle radio | wireless communication part in the vehicle-mounted communication apparatus used in the vehicle-vehicle and person-vehicle communication system of this invention. It is the block diagram which showed one Example of the internal structure of the communication control part in the vehicle-mounted communication apparatus used in the vehicle-vehicle communication system between the vehicles of this invention. It is a figure which shows one Example of the structure table | surface and data format of the vehicle travel information transmitted / received between vehicle-mounted communication apparatuses and between vehicle-mounted communication apparatuses and a mobile telephone apparatus in the vehicle-vehicle communication system of this invention. It is the block diagram which showed one Example of the whole structure of the mobile telephone apparatus used in the vehicle-to-vehicle and person-to-vehicle communication system of this invention. It is a figure which shows one Example of the structure table | surface and data format of pedestrian information transmitted / received between the mobile telephone apparatus of this invention, and a vehicle-mounted communication apparatus. It is the block diagram which showed one Example of the internal structure of the communication control part in the vehicle-mounted communication apparatus used in the vehicle-vehicle communication system between the vehicles of this invention. It is a flowchart figure which shows one Example of the control processing of the vehicle information processing part of the mobile telephone apparatus used in the inter-vehicle and person-to-vehicle communication system of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Navigation part 101 Navigation control part 102 Output part 103 Input part 104 Wireless communication control part 200 Wireless communication part 201 Pedestrian wireless communication part 202 Pedestrian antenna 203 Inter-vehicle wireless communication part 204 Vehicle antenna 300 In-vehicle communication apparatus 301 In-vehicle Communication device 302 In-vehicle communication device 400 Vehicle 401 Vehicle A
500 mobile phone device 501 display unit 502 operation unit 503 mobile phone wireless communication unit 504 inter-vehicle wireless communication unit 505 vehicle information processing unit 506 position information acquisition unit 507 mobile phone control unit 600 pedestrian A
800 t point 801 s point 802 u point 803 v point 900 Communication area A
901 Communication area B
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 Pedestrian information storage unit 1018 Control unit 1801 Display A
1802 Display B
DESCRIPTION OF SYMBOLS 1900 Wireless communication part 2011 Transmission part 2012 Reception part 2013 Switch 2014 Walk-to-vehicle communication processing part 2031 Transmission part 2032 Reception part 2033 Switch 2034 Inter-vehicle communication processing part 2050 Communication control part 2051 Navigation interface part 2052 Communication control processing part 2053 Transmission data storage part 2054 Received Data Storage Unit 2055 Inter-Vehicle Communication Interface Unit 2060 Personnel / Vehicle Wireless Communication Unit 2061 Transmitter 2062 Receiver 2063 Switch 2064 Communication Processing Unit 2065 Pedestrian Information Transmitter 2066 Vehicle Travel Information Transmitter 2067 Switch 2068 Pedestrian Information Reception unit 2069 Vehicle travel information reception unit 2070 Communication antenna 2071 Switch 2151 Communication control processing unit 2152 Inter-vehicle communication interface unit 24 00 wireless communication unit 2450 communication control unit 2460 person-vehicle-vehicle wireless communication unit 2470 communication antenna 2511 transmission unit 2512 reception unit 2513 switch 2514 communication processing unit 2651 communication control processing unit 2651 inter-vehicle communication interface unit

Claims (9)

In a vehicle-to-vehicle communication system that is composed of an in-vehicle communication device mounted on a car and a portable communication device carried by a pedestrian, and performs wireless data communication between vehicles and between a vehicle and a pedestrian,
The in-vehicle communication device is
Vehicle wireless communication means for wirelessly communicating data with other vehicles;
Pedestrian wireless communication means for wirelessly communicating data with a portable communication device carried by a pedestrian,
Wireless communication control means for individually controlling communication of each of the wireless communication means;
Display means for displaying and outputting the content of data received by the wireless communication means;
Vehicle information acquisition means for generating vehicle travel information including at least own vehicle position, travel direction, and speed information;
Processing control means for acquiring vehicle travel information from the vehicle information acquisition means and controlling the wireless communication control means to perform transmission processing of the vehicle travel information from the wireless communication means for vehicles and the wireless communication means for pedestrians; Comprising at least
The portable communication device is
Human-vehicle wireless communication means for performing transmission / reception of vehicle travel information with the pedestrian wireless communication means and not receiving vehicle travel information transmitted from the vehicle wireless communication means;
Display means for displaying and outputting data received in the human-vehicle wireless communication means;
Pedestrian information acquisition means for generating pedestrian information including at least the position of the own device and the moving direction;
When the vehicle travel information is received by the person-vehicle wireless communication means, the display means displays the content for notifying the approach of the vehicle, and the pedestrian information acquired by the pedestrian information acquisition means is displayed as the person-vehicle wireless communication means. And a mobile terminal control means for performing control so as to transmit from the vehicle. In a vehicle-to-vehicle communication system that is composed of an in-vehicle communication device mounted on a car and a portable communication device carried by a pedestrian, and performs wireless data communication between vehicles and between a vehicle and a pedestrian,
The in-vehicle communication device is
Wireless communication means for wirelessly communicating data with other vehicles and portable communication devices carried by pedestrians;
Wireless communication control means for performing communication control of the wireless communication means;
Display means for displaying and outputting the content of data received by the wireless communication means;
Vehicle information acquisition means for generating vehicle travel information including at least own vehicle position, travel direction, and speed information;
Processing control means for acquiring vehicle travel information from the vehicle information acquisition means, controlling the wireless communication control means to perform transmission processing of the vehicle travel information from the wireless communication means, and
The portable communication device is
Human-vehicle wireless communication means for performing transmission / reception of vehicle traveling information with the wireless communication means and not receiving vehicle traveling information transmitted from the wireless communication means;
Display means for displaying and outputting data received in the human-vehicle wireless communication means;
Pedestrian information acquisition means for generating pedestrian information including at least the position of the own device and the moving direction;
When the vehicle travel information is received by the person-vehicle wireless communication means, the display means displays the content for notifying the approach of the vehicle, and the pedestrian information acquired by the pedestrian information acquisition means is displayed as the person-vehicle wireless communication means. Mobile terminal control means for performing control to transmit from, at least,
When transmitting / receiving the vehicle travel information to / from another vehicle using the wireless communication means of the in-vehicle communication device, the carrier frequency assigned for inter-vehicle communication is used, and the portable communication device carried by the pedestrian and the vehicle A vehicle-to-vehicle and person-to-vehicle communication system that operates to use a carrier frequency allocated for pedestrian-to-vehicle communication when traveling information is transmitted and received. In a vehicle-to-vehicle communication system that is composed of an in-vehicle communication device mounted on a car and a portable communication device carried by a pedestrian, and performs wireless data communication between vehicles and between a vehicle and a pedestrian,
The in-vehicle communication device is
Wireless communication means for wirelessly communicating data with other vehicles and portable communication devices carried by pedestrians;
Wireless communication control means for performing communication control of the wireless communication means;
Display means for displaying and outputting the content of data received by the wireless communication means;
Vehicle information acquisition means for generating vehicle travel information including at least own vehicle position, travel direction, and speed information;
Processing control means for acquiring vehicle travel information from the vehicle information acquisition means, controlling the wireless communication control means to perform transmission processing of the vehicle travel information from the wireless communication means, and
The portable communication device is
Human-vehicle wireless communication means for transmitting and receiving vehicle travel information with the wireless communication means;
Display means for displaying and outputting data received in the human-vehicle wireless communication means;
Pedestrian information acquisition means for generating pedestrian information including at least the position of the own device and the moving direction;
When the vehicle travel information is received by the person-vehicle wireless communication means, the display means displays the content for notifying the approach of the vehicle, and the pedestrian information acquired by the pedestrian information acquisition means is displayed as the person-vehicle wireless communication means. Mobile terminal control means for performing control to transmit from, at least,
When the vehicle travel information is transmitted from the wireless communication means of the in-vehicle communication device to another vehicle, the vehicle travel information is transmitted with data indicating that the information is for the vehicle, and is carried by a pedestrian. When transmitting the vehicle travel information to the communication device, the vehicle travel information is transmitted with data indicating that the information is for pedestrians, and the mobile communication device receives the vehicle travel information for pedestrians. An inter-vehicle and inter-vehicle communication system, which operates so as to be discarded if not. A portable communication device used in a vehicle-to-vehicle and person-to-vehicle communication system according to any one of claims 1 to 3,
The person-to-car wireless communication means has a reception level measurement function for measuring the level of a reception signal. When vehicle driving information is received, the reception signal level is measured by the reception level measurement function, and a signal level above a certain level. If not, the mobile terminal control means performs display processing of received data. If a signal level above a certain level is detected, the received data display processing and the mobile terminal control means acquire the pedestrian information. A portable communication device that operates to perform transmission processing of pedestrian information acquired by means. A portable communication device used in a vehicle-to-vehicle and person-to-vehicle communication system according to any one of claims 1 to 3,
The person-to-vehicle wireless communication means transmits the pedestrian information acquired by the pedestrian information acquisition means to the in-vehicle communication device at a constant period during a period in which the vehicle travel information is received from the in-vehicle communication device within a predetermined time. A portable communication device characterized by operating as described above. An in-vehicle communication device used in a vehicle-to-vehicle and person-to-vehicle communication system according to any one of claims 1 to 3,
An in-vehicle communication apparatus, wherein a transmission cycle of vehicle travel information transmitted to a vehicle and a transmission cycle of vehicle travel information transmitted to a pedestrian are performed at different transmission intervals. An in-vehicle communication device according to claim 6,
An in-vehicle communication device, wherein a transmission cycle of vehicle travel information transmitted to a vehicle is set shorter than a transmission cycle of vehicle travel information transmitted to a pedestrian. An in-vehicle communication device used in the inter-vehicle and inter-vehicle communication system according to any one of claims 1 to 3,
An in-vehicle communication device characterized in that a transmission output level when transmitting vehicle travel information for a vehicle and a transmission output level when transmitting vehicle travel information for a pedestrian are set to individual values. An in-vehicle communication device according to claim 8,
An in-vehicle communication device, wherein a transmission output level when transmitting vehicle traveling information for a vehicle is set to be higher than a transmission output level when transmitting vehicle traveling information for a pedestrian.

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