JP2010282522A - On-vehicle communication equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle communication equipment for achieving highly safe running by allowing drivers of the other vehicles to recognize the presence of a driver who is unfamiliar with driving in a travel area so that the drivers thereof carry out thoughtful driving. <P>SOLUTION: The on-vehicle communication equipment to be mounted on a vehicle includes: a driving familiarity degree determination unit for determining a degree of driving familiarity on the basis of information on one's own vehicle position, registered vehicle number information, and/or driver's address information; a transmission determination unit for determining whether to transmit the information on one's own vehicle position or not according to the degree of driving familiarity determined by the driving familiarity degree determination unit; and a transmission unit for directly or indirectly transmitting at least the information on one's own vehicle position to on-vehicle transmission units mounted on the other vehicles when the transmission determination unit determines the transmission of the information on one's own vehicle position. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an in-vehicle communication device.

  When a driver of a vehicle travels in an unfamiliar area, the characteristics (for example, heavy traffic volume, lane conditions, road width, etc.) in the area are unknown, and there are many cases where the driver feels uneasy about driving. . Such driving of the vehicle by the driver is likely to be unstable (for example, a sudden lane change or driving that cannot keep up with the flow), and there is a high possibility that a collision with another vehicle will occur.

  There is a system for controlling the inter-vehicle distance as a means for preventing a collision between vehicles. However, since this system operates only when the vehicle approaches, it is difficult to say that the safety is high.

JP 2002-245595 A

  Here, Patent Document 1 discloses the following vehicle device. The vehicle device includes a user information input unit, an environment information input unit, an environment recognition unit, a risk determination unit, and an alarm unit.

  The user information input unit is a means for inputting user information such as age, medical history, and the presence or absence of a physical disorder. The environment information input unit is a means for receiving input of information such as the position and speed of another vehicle, the age, medical history, and the presence or absence of a physical disorder of the driver of the other vehicle. The environment recognizing unit determines values of various determination factors to be used for risk determination based on information taken from the user information input unit and the environment information input unit. The risk determination unit determines the risk that the driver is exposed based on the determination factor value determined by the environment recognition unit. The alarm unit generates an alarm according to the risk determination result from the risk determination unit. Thus, the driver can be alerted when it is determined that the driver is likely to have an accident.

  However, in the vehicle device disclosed in Patent Document 1, the risk determination is performed without considering information indicating that the driver is not used to driving in the area. Even if the vehicle is in the vicinity of the vehicle, it may be determined that the degree of danger is low and an alarm may not be issued, and there is a high possibility that a vehicle collision will occur.

  In view of the above problems, the present invention makes it possible for a driver of another vehicle to recognize the presence of a driver unfamiliar with driving in a traveling region, and enables the driver to take into consideration driving, and driving with high safety. An object of the present invention is to provide an in-vehicle communication device capable of realizing the above.

In order to achieve the above object, a vehicle-mounted communication device of the present invention is a vehicle-mounted communication device mounted on a vehicle.
A driving habituation determining unit that determines driving habituation based on information related to the vehicle position and vehicle registration number information and / or driver address information;
A transmission determination unit for determining whether to transmit the vehicle position information according to the driving familiarity determined by the driving familiarity determination unit;
A configuration that includes at least a transmission unit that directly or indirectly transmits the vehicle position information to a vehicle-mounted communication device mounted on another vehicle when the transmission determination unit determines to transmit the vehicle position information. It was.

  Here, the information on the vehicle position includes, for example, vehicle position information detected based on GPS radio waves, regional information acquired from a roadside device installed on a road, and the like. According to such a configuration, when a driver unfamiliar with driving in the driving region drives the vehicle, the driving familiarity is determined, and at least the own vehicle position information is transmitted to the in-vehicle communication device of the other vehicle. Therefore, the driver of the other vehicle can recognize the presence of the vehicle of the driver who is unfamiliar with driving, can drive in consideration of the vehicle, can prevent a collision accident beforehand, and can realize highly safe driving.

  Moreover, the said structure WHEREIN: The said transmission part is good also as a structure which transmits the vehicle position information at least to the vehicle-mounted communication apparatus mounted in the other vehicle via the roadside machine installed in the road. According to such a configuration, transmission can be performed even if there is another vehicle at a position where transmission cannot be performed directly.

  In any one of the above configurations, the driving familiarity determination unit may calculate and determine the driving familiarity by weighting calculation. In addition, in this configuration, the driving familiarity determination unit may be configured to calculate and determine the driving familiarity by performing weighted calculation based on the information related to the vehicle position and the registration number information of the vehicle.

  In any one of the above configurations, the driving familiarity determination unit determines the driving familiarity based on a distance from a position corresponding to the address information of the driver to the own vehicle position indicated by the information related to the own vehicle position. It is good also as a structure.

  According to the in-vehicle communication device of the present invention, the presence of a driver unfamiliar with driving in a traveling region can be recognized by a driver of another vehicle, and the driver can drive with consideration and is highly safe. Driving can be realized.

It is a figure which shows an example of the vehicle-to-vehicle communication system which concerns on this invention. It is a figure which shows the schematic structural example of the navigation apparatus which concerns on this invention. It is a flowchart regarding one Embodiment of a driving familiarity determination process. It is a figure which shows an example of the table which matched the area code, the registration number area, and the positional information. It is a figure which shows an example of the navigation display in driving | running | working in Osaka-shi. It is a figure which shows an example of the table which matched the range of distance, and the driving familiarity. It is a flowchart regarding another embodiment of a driving familiarity determination process. It is a figure which shows the road-vehicle communication system as a modification of FIG.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of a vehicle-to-vehicle communication system according to the present invention.

  Assume that the vehicle A whose registered number is “Shinagawa” and whose driver's address is near Shinagawa (in Tokyo 23 wards, etc.) is traveling in Osaka. In this case, the driver of vehicle A is familiar with the roads in Tokyo because the area of the registration number is Shinagawa and the address is near Shinagawa, but is familiar with the roads in Osaka city. Most likely not. On the other hand, the drivers of vehicles B and C whose registered numbers are “Osaka” and “Naniwa” in the suburbs of Osaka are highly likely to be familiar with the roads in Osaka. In this way, it is possible to predict to some extent the driving familiarity in the traveling area based on the traveling area, the registered number area, and the driver's address.

  As described above, the driver of the vehicle A is highly likely not to know the road in Osaka city, and the driving of the vehicle A is likely to be unstable. And when the vehicle A becomes close to the vehicles B and C, the possibility of a collision accident between the vehicles increases.

  Therefore, the navigation apparatus 100 according to the present invention mounted on the vehicle A receives GPS radio waves from the GPS satellite 200, detects the current position of the vehicle (absolute position of latitude and longitude) based on the GPS reception signal, and is detected. The driving familiarity in the traveling area is determined based on the own vehicle position, registration number information, and address information, and the value of the determined driving familiarity is low. It transmits to each navigation apparatus 100 mounted in the. The navigation devices 100 of the vehicles B and C display the presence of the vehicle A based on the vehicle position information received from the vehicle A, so that the drivers of the vehicles B and C can drive in consideration of the vehicle A. , Collision accidents can be prevented.

  FIG. 2 shows a schematic configuration example of the navigation device 100 according to the present invention. The navigation device 100 includes an antenna 1, a switch 2, a transmission unit 3, a reception unit 4, a control unit 5, a GPS reception unit 6, a map storage unit 7, a display unit 8, an operation unit 9, A registration number information storage unit 10 and a driver information storage unit 11 are provided.

  At the time of reception in vehicle-to-vehicle communication, the antenna 1 receives a digital modulation signal as a radio wave transmitted by another navigation device 100, outputs the digital modulation signal to the reception unit 4 via the switch 2, and the reception unit 4 The received digital modulation signal is demodulated and the received data is output to the control unit 5. The switch 2 is normally switched to the reception side, and is switched to the transmission side by the control unit 5 at the time of transmission.

  At the time of transmission in inter-vehicle communication, the control unit 5 switches the switch 2 to the transmission side and outputs transmission data to the transmission unit 3. The transmission unit 3 modulates the input transmission data and converts the digital modulation signal to the switch 2. The digital modulation signal is transmitted from the antenna 1 to the other navigation apparatus 100 as a radio wave.

  The GPS receiver 6 receives radio waves from GPS satellites and detects the current position (vehicle position) based on the radio waves. The GPS receiving unit 6 has an azimuth sensor that detects the traveling direction.

  The map storage unit 7 stores road data including road node data and road link data, and background data including water system data, administrative boundary data, and facility data. When the navigation screen is displayed, a map of a predetermined range including the vehicle position is extracted from the map storage unit 7 and displayed on the display unit 8.

  The display unit 8 includes an LCD (Liquid Crystal Display) or the like, and displays a navigation screen, a menu screen, and the like. The operation unit 9 is an interface for a user to operate the navigation device 100, and includes a touch panel, keys, and the like.

  In addition, when a region of a vehicle registration number (for example, “Shinagawa”) is input by operating the operation unit 9, registration number information representing the input region is stored in the registration number information storage unit 10. When the driver's address is input by operating the operation unit 9, address information representing the input address is stored in the driver information storage unit 11. Note that the license number having the IC chip may be held over the reader so that the reader reads the registered number information and the address information and stores the read information.

  Next, driving familiarity determination processing performed by the navigation device 100 according to the present invention will be described with reference to the flowchart of FIG. Note that the process shown in FIG. 3 is performed periodically.

  First, in step S30, the control unit 5 refers to a table as shown in FIG. 4 and the area code corresponding to the registration number information stored in the registration number information storage unit 10 and the GPS reception unit 6 detect it. It is determined whether or not the area code corresponding to the area including the vehicle position matches. Here, in the table shown in FIG. 4, region codes are assigned to the registration number regions in order from the north to the south of Japan, and location information is associated with the region codes and the registration number regions. The position information is, for example, the latitude and longitude of each point on the contour of the region, and the range connecting the points is the region region.

  For example, when the registered number information is “Shinagawa” and the vehicle is traveling in Osaka, the region code corresponding to the registered number information is 54, and the region code corresponding to the region including the vehicle position is 88.

  In step S30, the control unit 5 acquires the area information from the roadside device arranged on the road via the antenna 1, the switch 2, and the reception unit 4, and the area code corresponding to the acquired area information and the registration number information You may make it compare with the area code corresponding to.

  If it is determined in step S30 that the region codes match (N in step S30), the process proceeds to step S33, and the control unit 5 determines that the driver is familiar with the road in the traveling region and the driving habituation level is “high”. (For example, 100).

  If it is determined in step S30 that the region codes do not match (Y in step S30), the process proceeds to step S31. In step S <b> 31, the control unit 5 determines whether or not the vehicle position detected by the GPS receiving unit 6 is more than a predetermined distance from the position corresponding to the address information stored in the driver information storage unit 11.

  If it is not a predetermined distance or more (N in Step S31), the process proceeds to Step S34, and the control unit 5 assumes that the driver is accustomed to the road in the traveling area to some extent, and the control unit 5 sets the driving familiarity to “medium” (for example, , 70).

  If the distance is greater than the predetermined distance (Y in step S31), the process proceeds to step S32. In step S32, assuming that the driver is not accustomed to the road in the traveling area, the control unit 5 performs weighting calculation using the following equation (1) to calculate the driving familiarity D '. In equation (1), D: “low” driving familiarity (for example, 50), α: weight, C1: area code corresponding to registered number information (see FIG. 4), C2: own vehicle position is included. N: the total number of area codes (C2 may be an area code corresponding to area information acquired from a roadside machine).

D ′ = D * α (1)
However, α = 1− | C1−C2 | / N

  For example, when the registration number information is “Shinagawa” and the travel area is Osaka city, the weight α = 1− | 54−88 | / N. When the registered number information is “Aomori” and the travel area is Osaka City, the weight α = 1− | 3-88 | / N, and the weight α is smaller than when the registered number information is “Shinagawa”. The driving familiarity D ′ is also reduced.

  When the driving familiarity is determined in steps S32, S33, and S34, the process proceeds to step S35. In step S <b> 35, the control unit 5 confirms whether or not the mode for constantly transmitting the vehicle position information is set by the operation of the operation unit 9. Here, when the vehicle engine is started and the navigation device 100 is started, a screen for selecting whether or not to transmit the own vehicle position information is always displayed on the display unit 8, and the selection result by the operation unit 9 is set. Since it is stored in advance in the control unit 5 as information, the control unit 5 may confirm this setting information. If the driver is not confident in driving anyway, the mode may be set to always transmit the vehicle position information.

  And if it is set to the mode which always transmits the own vehicle position information (Y of step S35), it will progress to step S36 and the control part 5 will drive direction information detected with the own vehicle position information and the direction sensor. Then, the determined driving familiarity information and registration number information are broadcasted to other navigation devices 100 via the transmission unit 3, the switch 2, and the antenna 1 by inter-vehicle communication. Then, the processing is completed (end).

  Further, if the mode is not set to always transmit the vehicle position information (N in step S35), the process proceeds to step S37, and the control unit 5 determines whether the determined driving familiarity falls below a predetermined reference value. Determine whether or not. If the value is below the predetermined reference value (Y in step S37), the process proceeds to step S36, where the control unit 5 broadcasts the vehicle position information and the like to other navigation devices 100 through inter-vehicle communication, and the process is completed. (End). If the value is not less than the predetermined reference value (N in Step S37), the transmission is not performed and the processing is completed (End).

  When the vehicle position information or the like is transmitted by broadcast, the control unit 5 of the other navigation device 100 receives the transmitted vehicle position information or the like via the antenna 1, the switch 2, and the reception unit 4. When the navigation display is performed, the control unit 5 displays a map of a predetermined range including the vehicle position detected by the GPS reception unit 6, the vehicle mark indicating the detected vehicle position, and the received vehicle position information. The position is displayed on the display unit 8 together with the other vehicle mark indicating the position included in the detected vicinity area of the own vehicle position. At this time, for other vehicle marks whose received driving familiarity falls below a predetermined reference value, the region name of the received registration number information is attached and displayed (a vehicle requiring attention instead of the region name of the registration number information) May be marked to indicate). Further, an arrow mark indicating the traveling direction is attached to and displayed on the other vehicle mark based on the received traveling direction information.

  FIG. 5 is an example of a navigation display while traveling in Osaka City, and the own vehicle mark 20 and the other vehicle mark 30 are displayed together with the map, and the other vehicle mark 30 in front of the own vehicle mark 20 is an area of registration number information. The name “Shinagawa” is attached. Further, an arrow mark 40 is attached to the other vehicle mark 30.

  By such navigation display, the driver can recognize the existence of other vehicles that are unfamiliar with driving in the traveling area, can perform driving in consideration of other vehicles, and can prevent the occurrence of a collision accident.

  In the process shown in FIG. 3 described above, instead of steps S31, S32, and S34, the distance from the address information position to the vehicle position is calculated, and the distance range and driving experience as shown in FIG. 6 as an example. With reference to a table in which degrees are associated, a process may be performed in which the driving familiarity corresponding to the range of distances to which the calculated distance belongs is determined as the driving familiarity.

  FIG. 7 is a flowchart showing another embodiment of the driving familiarity determination process. Here, it is assumed that whether or not the vehicle is a rental car is set in advance by operating the operation unit 9.

  In FIG. 7, first, in step S70, the control unit 5 confirms whether or not the vehicle is set as a rental car. If not set (N in step S70), the process proceeds to step S73. The process shown in FIG. 3 is performed.

  On the other hand, if the vehicle is set to be a rental car (Y in step S70), the processes in steps S71, S72, S74, S75, S76, and S77 are performed thereafter. These processes are substantially the same as steps S31, S32, S34, S35, S36, and S37 in the process of FIG. 3, and the difference is that the driving familiarity is determined to be “medium” in step S34, but in step S74. The driving familiarity is determined as “high”.

  For example, when a rental car dealer in Osaka city sets “Osaka” as registration number information and a person who rents a rental car has an address in a distant place (for example, Tokyo) and travels in Osaka city, FIG. In step S30, since the region of the registration number information matches the traveling region in step S30, the driver's habituation level is set to “high” although the driver of the rental car is unfamiliar with roads in Osaka city in step S33. It will be decided. On the other hand, if it is the process of FIG. 7, since it determines with the own vehicle position having left | separated the predetermined distance or more from the position of address information by step S71, without considering registration number information, it progresses to step S72, The driving familiarity can be determined at a low level.

  In the process of FIG. 7, instead of steps S71, S72, and S74, a process of determining the driving familiarity may be performed using the table as shown in FIG.

  In the above embodiment, when the vehicle position information or the like is transmitted after the driving familiarity is determined, the vehicle position information or the like is directly broadcast to other navigation devices 100 by inter-vehicle communication. May be transmitted once to a roadside device installed in the vehicle, and the roadside device may broadcast the received vehicle position information and the like to the navigation device 100. FIG. 8 shows a state in which the transmission by the inter-vehicle communication in FIG. As a result, the vehicle position information and the like can be transmitted to a vehicle in a position that cannot be transmitted by inter-vehicle communication.

  As mentioned above, although embodiment which concerns on this invention was described, if it is in the range of the meaning of this invention, embodiment can be variously changed.

  For example, the calculation of the driving familiarity is not limited to the one based on the above-described formula (1), and is based on, for example, at least one of the age of the driver, the number of days elapsed from the date of obtaining the license, and the accident calendar. Thus, the weight may be calculated. In this case, information on the driver's age, license acquisition date, and accident calendar may be input by operating the operation unit 9 and stored in the driver information storage unit 11 in advance.

DESCRIPTION OF SYMBOLS 1 Antenna 2 Switch 3 Transmission part 4 Reception part 5 Control part 6 GPS reception part 7 Map memory | storage part 8 Display part 9 Operation part 10 Registration number information storage part 11 Driver information storage part 20 Own vehicle mark 30 Other vehicle mark 40 Arrow mark 100 Navigation device 200 GPS satellite 300 Roadside machine A, B, C Vehicle

Claims (5)

In a vehicle-mounted communication device mounted on a vehicle,
A driving habituation determining unit that determines driving habituation based on information related to the vehicle position and vehicle registration number information and / or driver address information;
A transmission determination unit for determining whether to transmit the vehicle position information according to the driving familiarity determined by the driving familiarity determination unit;
A transmission unit that directly or indirectly transmits the vehicle position information to an in-vehicle communication device mounted on another vehicle when the transmission determination unit determines to transmit the vehicle position information. An in-vehicle communication device characterized by the above.   The in-vehicle communication device according to claim 1, wherein the transmission unit transmits at least the vehicle position information to an in-vehicle communication device mounted on another vehicle via a roadside device installed on a road.   The in-vehicle communication device according to claim 1, wherein the driving familiarity determination unit calculates and determines a driving familiarity by weighting calculation.   The in-vehicle communication device according to claim 3, wherein the driving familiarity determining unit calculates and determines a driving familiarity by performing weighted calculation based on information on the vehicle position and registration number information of the vehicle. .   The said driving familiarity determination part determines a driving familiarity based on the distance from the position corresponding to the said driver | operator's address information to the own vehicle position which the information regarding the said own vehicle position shows. The in-vehicle communication device according to claim 4.

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