JP2019067147A - Information generation device, information generation method, and program for information generation device - Google Patents

Abstract

To provide an information generation device for generating information such that a receiver side mobile body can effectively utilize information when transmission data is generated in communication between mobile bodies in which the amount of data is limited.SOLUTION: An information generation device 1 capable of being mounted on a mobile body acquires mobile environment information on mobile environment where the mobile body moves (S21), and generates transmission information to be transmitted to another mobile body, including mobile body information of antecedent items according to the mobile environment information from among the mobile environment information of a plurality of items on the mobile body (S25 to S27).SELECTED DRAWING: Figure 12

Description

  The present application belongs to the technical fields of an information generation device, an information generation method, and a program for an information generation device.

  Communication between mobiles is performed between mobiles, and mutual information is used for driving assistance of a vehicle. Patent Document 1 below describes a vehicle that is divided into a plurality of division information, determines the priority for the division information, determines the number of times of transmission of information with high priority, and repeatedly transmits information with high priority. A communication device is disclosed.

JP, 2014-59651, A

  However, in the case where control objects related to operation control of moving objects, for example, various moving objects having different levels of automatic operation are mixed, the technique described in Patent Document 1 is required according to the control attributes. Since the items of mobile information are different, it has been difficult to effectively communicate with transmission data of mobile-to-mobile communication with a limited amount of data.

  Therefore, the present application has been made in view of each of the above problems, and an example of the problem is that information is generated in the mobile unit on the receiving side when generating transmission data of mobile communication with a limited amount of data. It is an object of the present invention to provide an information generating apparatus or the like that generates information that can effectively use

  In order to solve the above problems, the invention according to claim 1 is an information generation device mountable on a mobile body, which is acquisition means for acquiring mobile environment information on a mobile environment in which the mobile body moves, and the mobile means Information generation means for generating transmission information to be transmitted to another mobile body including mobile body information of an item prioritized according to the mobile environment information among mobile body information of a plurality of items related to the body; .

  In the invention according to claim 6, the acquiring means acquires moving environment information on the moving environment in which the moving body moves, and the information generating means includes moving body information of a plurality of items on the moving body. The information generation step of generating transmission information to be transmitted to another mobile body including mobile body information of an item to be prioritized according to the mobile environment information.

It is a block diagram showing an example of outline composition of an information generating device concerning an embodiment. It is a schematic diagram which shows an example of schematic structure of the communication system between vehicles concerning an Example. It is a schematic diagram which shows an example of driving | running | working environment. It is a schematic diagram which shows an example of driving | running | working environment. It is a schematic diagram which shows an example of driving | running | working environment. FIG. 2 is a block diagram showing an example of a schematic configuration of an inter-vehicle communication device of an autonomous driving vehicle. It is a schematic diagram which shows an example of the database of the inter-vehicle communication apparatus of FIG. It is a flowchart which shows an example of operation | movement of the vehicle-to-vehicle communication apparatus at the time of transmission which concerns on an Example. It is a schematic diagram which shows an example of the information for transmission. It is a schematic diagram which shows an example of the information for transmission. It is a flowchart which shows an example of operation | movement of the vehicle-to-vehicle communication apparatus at the time of reception which concerns on an Example. It is a flowchart which shows 2nd Example of operation | movement of a vehicle-to-vehicle communication apparatus at the time of transmission. It is a schematic diagram which shows an example of the information for transmission. It is a schematic diagram which shows an example of the information for transmission.

  A mode for carrying out the present application will be described with reference to FIG. FIG. 1 is a block diagram showing an example of a schematic configuration of the information generation apparatus according to the embodiment.

  As shown in FIG. 1, the information generation device 1 is configured to include an acquisition unit 1 a and an information generation unit 1 b.

  Examples of the information generation device 1 include a navigation device mounted on a mobile body, a portable terminal device, and the like. Examples of the portable terminal device include a portable wireless telephone including a smartphone, a PDA, and the like. As an example of a moving body, a car, a bicycle, a person, a railroad, a ship, an aircraft etc. are mentioned, for example.

  The information generation device 1 performs wireless communication with the information generation device 1 of another mobile unit.

  In this configuration, the acquisition unit 1a acquires moving environment information in which the moving object moves.

  Here, as an example of mobile environment information, information on the location where the mobile body is located (including current position information of the mobile body), information on a scene where the mobile body is encountering, information on time when the mobile body is moving Etc. As an example of the information about the place, expressways, roads in the suburbs (for example, roads in areas where traffic is less than in downtown areas), roads in town, information on road types such as mountain roads, location of moving objects Information, intersection information, merging information, and the like. As an example of information related to a scene, information on weather, traffic congestion, etc. may be mentioned. Information on time includes date, time zone such as day, night and evening, season, and the like. In addition, map information based on current position information may be used as information related to a place that is an example of mobile environment information.

  The information generation unit 1b generates transmission information to be transmitted to another mobile body, including mobile body information of an item prioritized according to the mobile environment information among mobile body information of a plurality of items related to mobile bodies.

  Here, as an example of an item of moving body information included in a plurality of items regarding moving bodies, an item of moving body speed, an item of ON / OFF of light provided to the moving body, an item of ON / OFF of wipers, traveling Item of road type (highway, general road, mountain road, suburb road, road in town, etc.), item of position of moving object by GPS (Global Positioning System), item of relative position to feature (high accuracy position information Items), link ID items of links that are sections of roads that connect nodes together on map data, intersection information (trisection roads, cross roads, link IDs of intersecting roads, presence / absence of signals, location, traffic congestion etc.) Items include attributes of the driver operating the moving body (sex, age, etc.), driver's condition (alertness, sleepiness), items of automatic driving level, items of merging information, and the like.

  Further, as an example of the item of mobile object information, the item of the state of the lane keeping function, the item of the state of the inter-vehicle distance keeping function, the item of the tracking function state of forward moving object, peripheral moving object information (for example, Vehicle type, control attribute) etc. are mentioned.

  Further, as an example of the item of mobile object information, an item of destination information by a navigation system, an item of route information, and the like can be mentioned.

  Further, the items of merging information are divided into items of scheduled merging time, items of merging planned position, link IDs of merging roads, and items of congestion information of merging roads. As for the item of scheduled merging time, detailed scheduled merging time (for example, in microseconds), non-detailed scheduled merging time (for example, in minutes), and the like can be mentioned. With respect to the planned merging position, a detailed planned merging position (for example, several millimeters accuracy), a non-detail merging planned position (for example, in meters), and the like can be mentioned.

  The item of intersection information may also have a detailed item and a non-detail item regarding position etc. like the item of merging information.

  Items related to automatic driving are items specific to automatic driving, not information required particularly for driving in the safe driving support mode, such as detailed position information.

  In addition, the information related to the operation control of the moving object is information necessary for the automatic operation of the moving object, and varies depending on the level of automation, the type of moving object (vehicle type etc.), and the control mechanism of the moving object. Body speed, detailed current position of mobile (for example, relative position with feature, link ID, etc.), detailed merging information (detailed merging time, detailed merging planned position, road type, etc.) can be mentioned.

  Here, the communicable range from the position of the moving body, that is, the range in which communication between the moving bodies is possible is, for example, a range of several hundred meters from the moving body, but communication is possible by radio wave intensity, frequency, obstacle Range is different.

  As an example of the transmission information, at least mobile entity information of an item may be included. The items of the transmission information may be divided into required items that are required and optional items that are options. For example, the items of the control attribute of the self-moving object, the current position of the self-moving object, the speed of the self-moving object, and the traveling direction of the self-moving object are essential items. When the control attribute is automatic operation, the required item may be the detailed current position (the relative position of the mobile object to the feature) instead of the current position. When the control attribute is driving in the safe driving support mode, the essential items may include an item of the state of the driver, position information of surrounding moving objects, an item of the traveling direction, and the like.

  The items of the transmission information may include required items regardless of the control attribute. For example, the item of the control attribute of the mobile unit and the item of the current position may be required items regardless of the control attribute.

  The transmission information has an upper limit on the data size, and the items included in the transmission information differ depending on the data size of each item, the priority of the item, and the like.

  Note that the information generation device 1 may estimate a control attribute related to operation control of a moving object with a relatively large number of other moving objects existing in a range where communication between the moving object and the moving object is possible.

  Here, as an example of the control attribute regarding the operation control of the mobile unit, each level of automatic driving and automatic steering defined by an engine or the like in each country can be mentioned. For example, when the moving object is a vehicle, the level 0 of automation is the lowest, and the level 4 of automation is the highest. Furthermore, for example, the control attribute may be divided into two attributes of automatic driving and safe driving support. When the control attribute is automatic driving, for example, level 3 and level 4 may be associated with level 0 to level 2 in the case of safe driving support. When the control attribute is automatic driving, for example, level 2 to level 4 may be associated with level 0 and level 1 in the case of safe driving support.

  When the mobile object is a vehicle, the control attribute may be estimated based on the type of road on which the vehicle is traveling. For example, when the vehicle is traveling on a freeway, there is a high probability that the vehicle is functioning in automatic driving, and a vehicle of automatic driving is within the range where communication between movable bodies is possible. It is estimated to be relatively large compared to vehicles that are not performing functions. Further, the estimation of the control attribute may be estimated on the basis of the result of performing the inter-mobile communication. For example, the control attribute is estimated from the number of control attribute values (for example, the automatic driving level) included in the received transmission information, which are transmitted from other mobiles within a range where mobiles and mobiles can communicate with each other. Be done. In addition, it may be estimated by a camera for photographing the surroundings mounted by the moving body. For example, the control attribute is estimated by the type of car or the like shown in the camera.

  As an example of a place dedicated to a mobile unit in which the mobile unit moves, there are an expressway on which a vehicle travels, a road exclusively for automobiles, and the like.

  As described above, according to the operation of the information generating apparatus 1 according to the embodiment, it is possible to preferentially include in the transmission information the mobile object information of the item according to the mobile object environment information. Even if the amount is limited, the information can be effectively used by the mobile unit on the receiving side via inter-vehicle communication.

[1. Configuration and Function Overview of Inter-Vehicle Communication System and Inter-Vehicle Communication Device]
(1.1 Configuration and Function Overview of Inter-Vehicle Communication System)

  Next, specific examples corresponding to the above-described embodiment will be described using the drawings. The embodiment described below is an embodiment in the case where the present invention is applied to an inter-vehicle communication system S in a vehicle which is an example of a moving object.

  FIG. 2 is a schematic view showing a configuration example of the inter-vehicle communication system S. As shown in FIG. FIGS. 3 to 5 are schematic diagrams showing an example of the traveling environment.

  As shown in FIG. 2, the inter-vehicle communication system S of this embodiment includes a plurality of vehicles 5 (one example of a moving object) whose control attribute is automatic driving and a plurality of vehicles whose control attribute is driving in the safe driving support mode. And a vehicle 5 (an example of a moving body). Each vehicle 5 is equipped with an inter-vehicle communication device 10 (an example of an information generation device). Note that the inter-vehicle communication devices 10 of the respective vehicles 5 need not be exactly the same device as long as they can communicate with each other.

  The vehicle 5 which is an autonomous driving is, for example, a vehicle whose level of automation is level 3 or level 4. In the case of level 3, although all of acceleration, steering, and braking are automatically controlled, the user (driver) of the vehicle 5 performs acceleration, steering, and braking according to the situation. In the case of level 4, acceleration, steering and braking are all controlled automatically.

  The vehicle 5 which is driving in the safe driving support mode is, for example, a vehicle whose level of automation is level 0 to level 2. In the case of level 1 or level 2, the vehicle 5 is automatically controlled to either accelerate, steer or brake. In the case of level 0, the control of acceleration, steering, and braking is not performed for the user of the vehicle 5, and for example, only notification is provided for information related to safe driving support. Further, even if the vehicle 5 which is driving in the safe driving support mode is a vehicle 5 having a level 3 or level 4 automatic driving function, the situation corresponding to any level 0 to level 2 Vehicles are also included.

  Depending on whether the traveling environment in which the vehicle 5 is traveling (an example of the traveling environment) is a highway or a general road, the number of vehicles 5 assumed for automatic driving varies. As shown in FIG. 3, for example, the road R1 is an expressway, and the road R2 is a general road. It is assumed that there are relatively many vehicles 5 executing the function of automatic driving on the road R1 of the expressway. It is assumed that there are few vehicles 5 executing the function of the automatic driving on the road R2 of the ordinary road.

  In the example shown in FIG. 4, the traveling environment in which the vehicle 5 is traveling approaches each other toward the intersection of the road R3 and the road R4. The vehicles 5 in the vicinity of the intersection communicate with each other including intersection information (an example of the movement environment information).

  In the example shown in FIG. 5, the traveling environment in which the vehicle 5 is traveling is near the junction of the road R5 and the road R6. Communication among the vehicles 5 in the vicinity of the merging point is performed including merging information (an example of the movement environment information).

  The inter-vehicle communication device 10 communicates with each other by radio waves of a predetermined frequency. The inter-vehicle communication device 10 of the vehicle 5 identified from among the vehicles 5 and the inter-vehicle communication device 10 of another vehicle 5 different from the vehicle 5 communicate with each other by radio waves of a predetermined frequency.

  The inter-vehicle communication device 10 mounted on the vehicle 5 for automatic driving provides information on operation control to a drive control unit (not shown) that controls acceleration, steering, and braking of the vehicle 5.

  In the case of level 1 or level 2, the inter-vehicle communication device 10 mounted on the vehicle 5 in driving in the safe driving support mode has information on driving control to the drive control unit regarding control among acceleration, steering and braking. provide. In the case of level 0, the inter-vehicle communication device 10 outputs information relating to the safe driving support by sound or display.

(1.2 Configuration and Function of Configuration of Inter-Vehicle Communication Device 10)
Next, the configuration and function of the inter-vehicle communication device 10 will be described using FIGS. 6 and 7.

  FIG. 6 is a block diagram showing a configuration example of the inter-vehicle communication device 10. As shown in FIG. FIG. 7 is a schematic view showing an example of a database of the inter-vehicle communication device of FIG.

  As shown in FIG. 6, the inter-vehicle communication device 10 functioning as a computer includes a communication unit 11, a storage unit 12, an output unit 13, an operation unit 14, a sensor information acquisition unit 15, and a control unit 16. Have.

  The communication unit 11 performs wireless communication by radio waves for communication with the inter-vehicle communication device 10 of another vehicle 5.

  The storage unit 12 is configured by, for example, a hard disk drive, a silicon disk drive, or the like. The storage unit 12 includes a map database (map DB) 12a, an item statistics database (item statistics DB) 12b, and the like.

  The map database 12a stores information necessary for navigation, such as roads, facilities, intersections, and traffic control positions. For example, as road information, position information of each link (for example, position coordinates of nodes at both ends of the link, etc.), distance of the link, road width, road name and the like can be mentioned.

  As shown in FIG. 7, the item statistics database 12b is associated with the item ID, and stores the number of times of reception of each item and the number of times of use. Each item included in transmission information received from another vehicle is counted for each item, and a value is stored in the field of the number of receptions of each item. Among the values of each item included in the received transmission information, the value of the item used for driving in the automatic driving or safe driving support mode is counted for each item, and the value is stored in the number of times of use of each item Be done.

  In the storage unit 12, driver attribute information such as the gender and age of the driver driving the own vehicle may be registered.

  The storage unit 12 stores various programs for controlling the inter-vehicle communication device 10 and the like. The various programs include an operating system, navigation, and application software for playing music. The various programs may be acquired via, for example, a network such as a wireless communication network, or may be recorded on a recording medium such as a CD or a DVD and read via a drive device. .

  The output unit 13 outputs an image, a sound, and the like. The output unit 13 is, for example, an output unit of a car navigation device, and is configured of a liquid crystal display element, an EL element, a speaker, or the like.

  The sensor information acquisition unit 15 is a sensor (internal sensor) mounted on the vehicle that measures the traveling state of the vehicle itself or the like, or a sensor that measures the external environment of the vehicle, and is an external world that acquires information necessary for automatic driving. It has a sensor (external sensor) and the like.

  For example, the internal sensor may include an acceleration, a speed, a traveling direction, an inclination, and the like of the vehicle 5. The internal sensor is a sensor that detects an angle of a steering wheel, an operation state of a brake, a gear, a wiper or the like, an indication direction of a direction indicator, an on / off state of a light, and the like. Furthermore, as the inside sensor, specifically, a gyro sensor, an acceleration sensor, a speed sensor, a wheel rotation angle sensor, a steering angle sensor, etc. may be mentioned. In addition, GNSS (Global Navigation Satellite System) positioning systems, such as GPS (Global Positioning System) which acquires the absolute position of the vehicle 5, may or may not be included in the inside sensor.

  Moreover, a radar, a traveling space sensor (LIDAR: Light Detection and Ranging, Laser Imaging Detection and Ranging), a camera for photographing the surroundings of a vehicle, etc. may be mentioned as an example of the external sensor.

  Moreover, the sensor information acquisition part 15 may have a sensor which receives the traffic information which a road traffic information communication system (VICS (trademark): Vehicle Information and Communication System) provides. The sensor information acquisition unit 15 has a timer that measures the current time.

  Moreover, the sensor information acquisition part 15 may be comprised so that an image may be acquired from the camera which image | photographs a driver | operator. Furthermore, the sensor information acquisition unit 15 may have a rainfall sensor.

  In addition, the contained sensor changes with control attributes of a vehicle. For example, the sensor information acquisition unit 15 of the vehicle 5 driving in the safe driving support mode may not have the traveling space sensor.

  The operation unit 14 is configured by, for example, an operation button or the like. When the output unit 13 is a touch switch type display panel such as a touch panel, the operation unit 14 acquires position information of the output unit 13 that the user has touched or approached.

  The control unit 16 includes, for example, a central processing unit (CPU), a read only memory (ROM), and a random access memory (RAM). The control unit 16 controls the operation of each unit of the inter-vehicle communication device 10.

[2. Operation of inter-vehicle communication device 10]
Next, the operation of the inter-vehicle communication device 10 according to the embodiment will be described with reference to the drawings.

(2.1 Example of operation of inter-vehicle communication device 10 at the time of transmission)
First, an example of the operation of the inter-vehicle communication device 10 at the time of transmission will be described using FIG. 8 to FIG.

  FIG. 8 is a flowchart showing an example of the operation of the inter-vehicle communication device 10 at the time of transmission according to the embodiment. 9 and 10 are schematic diagrams showing an example of transmission information.

  As shown in FIG. 8, the inter-vehicle communication device 10 acquires vehicle environment information (an example of movement environment information) (step S1). Specifically, the control unit 16 of the inter-vehicle communication device 10 acquires an image of the surroundings of the host vehicle 5 from the camera of the sensor information acquisition unit 15. Further, the control unit 16 acquires, from the current position information of the sensor information acquisition unit 15 and the map information, information on the road type of the road currently being traveled.

  Further, the control unit 16 acquires information on the current time from the timer of the sensor information acquisition unit 15. Further, the control unit 16 acquires traffic information from the sensor information acquisition unit 15. The control unit 16 acquires, from the sensor information acquisition unit 15, information such as the state of the road surface and the weather.

  Next, the inter-vehicle communication device 10 acquires information of the host vehicle (step S2). Specifically, from the inner sensor of the sensor information acquisition unit 15, the control unit 16 detects the acceleration, speed, traveling direction, and inclination of the vehicle 5, the angle of the steering wheel, the operation state of the brake, the gear, the wiper, and the like. Information such as the indication direction of the indicator and the light on / off state is acquired. In the case of the driver attribute, the control unit 16 may read out the user attribute information registered in the storage unit 12.

  Next, the inter-vehicle communication device 10 receives transmission information from another vehicle (step S3). Specifically, the control unit 16 receives, via the communication unit 11, the transmission information from another vehicle on the transmission side which is within the reach of radio waves. When the own vehicle 5 on the receiving side receives transmission information from another vehicle, the number of receptions is stored in the item statistics database 12b for each item included in the transmission information.

  Next, the inter-vehicle communication device 10 estimates control attributes of many vehicles around the vehicle (step S4). For example, when the road type is an expressway, the control unit 16 estimates that the control attribute of a relatively large number of vehicles around the host vehicle 5 is automatic driving. Further, the control unit 16 takes statistics of the value of the level item of the automatic driving of the received transmission information, and when there are many other vehicles of level 3 or more, the control attributes of many vehicles around the own vehicle 5 are It may be estimated that it is an autonomous driving. For example, with regard to how to take statistics, the communication received in the last second for every second is corrected for each vehicle ID specifying another vehicle, and it is reflected almost in real time in the change of the item for transmission information. The control unit 16 may obtain statistics of other currently received data of the vehicle in real time. Moreover, regarding how to take statistics, the control unit 16 may take statistics using cumulative data from the past linked to the situation such as the road type. In addition, the control unit 16 may estimate control attributes from the vehicle type and the like captured in the camera and calculate the control attributes of a relatively large number of vehicles around the host vehicle 5 by adding up the control attributes.

  As described above, the inter-vehicle communication device 10 is a control attribute relating to the operation control of another moving object existing in the communicable range from the position of the moving object, and is an estimation unit that estimates control attributes having a relatively large number. Function as an example. The inter-vehicle communication device 10 functions as an example of an estimation unit that estimates a control attribute of automatic driving when the mobile moves in a place dedicated to the mobile.

  Next, the inter-vehicle communication device 10 selects an item of prioritized vehicle information (an example of mobile object information) according to the estimated control attribute (step S5). For example, when the estimated control attribute is automatic driving, the control unit 16 sets the item of high-accuracy position information (detailed current position, detailed merging position if merging, etc.) necessary for automatic driving, high-accuracy time Priority is given to items such as information (detailed joining time if joining). When the control attribute of the own vehicle 5 is driving in the safe driving support mode and the own vehicle 5 does not have the traveling space sensor and can not obtain highly accurate position information, the control unit 16 performs high accuracy. An item of time information may be selected, or another item such as a control attribute of the host vehicle 5 may be selected preferentially. The control unit 16 may arbitrarily select an item within the allowable range of data capacity that can be transmitted at one time. In addition, the control unit 16 may select the mobile object information itself of the item instead of the item.

  On the other hand, when the estimated control attribute is driving in the safe driving support mode, for example, the control unit 16 preferentially selects position information, a driver attribute, a driver state, and the like which are not high precision.

  When the estimated control attribute is driving in the safe driving support mode, the control unit 16 may select not to select the item of the highly accurate position information. This is a response on the assumption that, for example, when the estimated control attribute is the safe driving support mode, there is no opportunity for other vehicles on the receiving side to use highly accurate position information. In the case where the estimated control attribute is the safe driving support mode, the preferential selection of the highly accurate position information for the transmission information is efficient reception when the data capacity that can be transmitted at one time is limited. This is contrary to the viewpoint of generating information that can be used by other vehicles on the side.

  Thus, the inter-vehicle communication device 10 functions as an example of selection means for selecting an item to be prioritized according to the estimated control attribute among a plurality of items of mobile object information including information on operation control of the mobile object. Do. The inter-vehicle communication device 10 functions as an example of selection means for selecting moving object information of an item to be prioritized according to the moving environment information among the moving object information of the plurality of items.

  Next, the inter-vehicle communication device 10 reads the statistic for the item (step S6). Specifically, the control unit 16 refers to the item statistics database 12b, reads the number of receptions (an example of a statistic) and the number of uses (an example of a statistic) of each item, and uses the number of uses per reception Calculate the frequency (an example of a statistic).

  As described above, the inter-vehicle communication device 10 functions as an example of an acquisition unit that acquires a statistic for an item used by another mobile body among items of the transmission information.

  Next, the inter-vehicle communication device 10 generates transmission information (step S7). Specifically, the control unit 16 sets the priority to be high so that the item selected in step S5 is included, and determines the item to be included in the transmission information from the data size of the item.

  As shown in FIGS. 9 and 10, when there are required items and optional items, the required items may be included in the transmission information regardless of the control attribute. For example, when the approach information of an emergency vehicle such as an ambulance or the route information on which the emergency vehicle travels is acquired as peripheral vehicle information, the peripheral vehicle information is prioritized and transmission information is used regardless of the control attribute. It may be a required item. Also, for example, as shown in FIG. 10, even if the control attribute of many vehicles in the periphery is driving in the safe driving support mode, route information of the own vehicle (vehicle on the transmitting side) and driving assistance information 1 (for example, own vehicle In the case of the state of the inter-vehicle keeping function, the item of information indicating that the function is being executed may be set as an essential item.

  Further, after determining the required items, if the item selected in step S5 is not a required item, the control unit 16 may set the item higher than the option item as the required item.

  In addition, the control unit 16 may select high-order items (for example, three high-order items) with high frequency of use for reception. The control unit 16 may determine the items to be included in the transmission information by weighting the items according to the frequency of use. Total of whether or not the item selected in step S5 (an example of the item to be prioritized according to the control attributes of many vehicles around it), whether it is an essential item, and whether the item is frequently used The control unit 16 may determine an item to be included in the transmission information by weighting with. As described above, the inter-vehicle communication device 10 may function as an example of a selection unit that selects an item to be prioritized according to the estimated control attribute and the statistic.

  When the control attribute of many vehicles in the vicinity is estimated to be automatic driving, for example, as shown in FIG. 9, an item is determined. The item of high precision position information of the own vehicle 5 necessary for the automatic driving of another vehicle (the receiving side vehicle) and the item of the control attribute level of the own vehicle 5 are ranked high. Furthermore, items of a lane keeping function state, an inter-vehicle distance keeping function state, and a forward vehicle following function state are additionally included as optional items. The items may or may not include the items necessary for driving in the safe driving support mode.

  When control attributes of many vehicles in the vicinity are estimated to be driving in the safe driving support mode, for example, as shown in FIG. 10, items are determined. For example, the items of the driver state of the host vehicle 5 and the items of the surrounding vehicle information (an example of the surrounding moving object information) are ranked high in the essential items. Items of destination information of the host vehicle 5 and items of route information are included in the option items.

  Next, the control unit 16 acquires information corresponding to the item to be included in the determined transmission information. For example, in the case of the item of the detailed current position, the information of the detailed current position acquired in step S2 is acquired. In the case of the item of the driver's attribute, the control unit 16 acquires the information registered in the storage unit 12. In the case of the item of the driver's condition, the control unit 16 determines the driver's condition from the operation condition of the steering wheel, the image of the driver and the like.

  Next, the control unit 16 includes the identification information of the vehicle 5 in the header, and in the order of the determined items, the item ID, the data size, the data value, the next item ID, the data size, Information for transmission is generated as data values,.

  As described above, the inter-vehicle communication device 10 includes, among the plurality of items of mobile object information including the information related to the operation control of the mobile, the mobile object information of the item to be prioritized according to the estimated control attribute. Functions as an example of an information generation unit that generates transmission information to be transmitted to the mobile object. The inter-vehicle communication device 10 functions as an example of a required item selection unit that selects a required item regardless of the estimated control attribute. The inter-vehicle communication device 10 functions as an example of an information generation unit that generates transmission information including mobile object information as an essential item.

  Next, the inter-vehicle communication device 10 transmits transmission information (step S8). Specifically, the control unit 16 broadcasts from the transmitting vehicle 5 to the inter-vehicle communication device 10 of the other vehicle that is the receiving side via the communication unit 11. The inter-vehicle communication 10 functions as an example of a communication unit that transmits transmission information.

(An example of operation of the inter-vehicle communication device at the time of 2.2 reception)
Next, an example of the operation of the inter-vehicle communication device at the time of reception will be described using FIG.

  FIG. 11 is a flowchart showing an example of the operation of the inter-vehicle communication apparatus at the time of reception according to the embodiment.

  As shown in FIG. 11, the inter-vehicle communication device 10 acquires vehicle environment information as in step S1 (step S10).

  Next, the inter-vehicle communication device 10 acquires information of the host vehicle as in step S2 (step S11).

  Next, as in step S3, the inter-vehicle communication device 10 receives transmission information from another vehicle (step S12).

  Next, the inter-vehicle communication device 10 outputs information on the operation control of the host vehicle 5 or outputs a notification (step S13). If the own vehicle 5 is a control attribute of automatic driving, the control unit 16 determines the current position based on the information of the necessary items among the vehicle environment information, the information of the own vehicle, and the information for transmission from other vehicles. Information on drive control as to how to control the drive of the host vehicle 5 from the traveling direction, speed, etc. is output to the drive control unit.

  When the own vehicle 5 is the control attribute of the driving in the safe driving support mode, the control unit 16 performs the driving based on the vehicle environment information, the information of the own vehicle, and the information of the necessary items among the transmission information from other vehicles. The information necessary for the notification to the hand is output to the output unit 13. For example, if the vehicle in front is approaching too close, the output unit 13 outputs a warning of approaching. The control unit 16 compares the position information of the other information of the transmission information received from the other vehicle, the speed, the traveling direction and the like with the position information of the own vehicle 5 and the information of the traveling direction, When the vehicle is approaching at an intersection or the like, the output unit 13 outputs a warning. An example of notification to the driver by warning display by an image of a navigation device or the like provided in the own vehicle or warning guidance by a voice provided from a speaker provided in the own vehicle can be mentioned as an example.

  Next, the inter-vehicle communication device 10 increases the number of times of use for the used item among the items of the transmission information (step S14). When the own vehicle 5 is a control attribute of automatic driving and the control unit 16 controls the drive of the own vehicle 5 using detailed position information of another vehicle at the junction, based on the used item ID, In the item statistics database 12b, the count number of times of use of the item of the detailed position information is increased.

  When the own vehicle 5 is notified that the other vehicle is approaching at a junction point, an intersection, etc. in the control attribute of driving in the safe driving support mode, the position of the other vehicle in the transmission information received from the other vehicle The count number of the number of times of use of each item of information such as information, speed, and traveling direction is increased in the item statistics database 12b based on the used item ID.

  As described above, according to the operation according to the embodiment, it is possible to preferentially include in the transmission information the vehicle information of the item according to the control attribute of the vehicle having a relatively large number of surroundings. Even if the amount of data is limited, the information can be effectively used by the receiving vehicle via transmission of inter-vehicle communication.

  In addition, when the required item is selected regardless of the control attribute and transmission information including vehicle information of the required item is generated, since the required item is always included, the control attribute of the received vehicle 5 is the automatic driving However, even in driving in the safe driving support mode, the information can be used effectively.

  In addition, when the statistical amount for the used item is acquired among the items of the transmission information, and the priority item is selected according to the statistical amount and the control attribute, the vehicle information of the item having a high utility value is statistically obtained. , Can communicate effectively.

  Further, when the vehicle 5 is traveling on a vehicle exclusive road like a highway, when it is estimated as a control attribute of automatic driving, there is a high possibility that the automatic driving is functioning on the vehicle exclusive road, so the automatic driving is Can effectively communicate with the vehicle 5 on which the

(2.3. Second embodiment of the operation of the inter-vehicle communication device 10 at the time of transmission)
Next, a second embodiment of the operation of the inter-vehicle communication device 10 at the time of transmission will be described using FIG. 12 to FIG. The operation different from that of the above embodiment will be mainly described.

  FIG. 12 is a flow chart showing a second embodiment of the operation of the inter-vehicle communication apparatus at the time of transmission. 13 and 14 are schematic views showing an example of transmission information.

  As shown in FIG. 12, the inter-vehicle communication device 10 acquires vehicle environment information (step S21).

  As described above, the inter-vehicle communication device 10 functions as an example of an acquisition unit that acquires moving environment information in which a moving object moves.

  Next, the inter-vehicle communication device 10 acquires information of the host vehicle (step S22).

  Next, the inter-vehicle communication device 10 receives transmission information from another vehicle (step S23).

  Next, the inter-vehicle communication device 10 estimates control attributes of many vehicles around the vehicle (step S24). Note that this step may be omitted.

  Next, the inter-vehicle communication device 10 selects an item of vehicle information to be prioritized according to the vehicle environment information (an example of the movement environment information) (step S25). For example, when the own vehicle 5 is in the vicinity of the junction point by comparing the current position with the map information, the control unit 16 selects an item of the junction information with priority. When the host vehicle 5 is near an intersection, the control unit 16 may select the item of the intersection information with priority. In addition, when the host vehicle 5 is traveling on the expressway, the control unit 16 may prioritize and select items related to automatic driving such as a detailed current position item. In addition, when the host vehicle 5 travels a suburban road with a small traffic volume due to a traffic jam, the control unit 16 may not select the item of the detailed current position with priority. When it is determined by the sensor information acquisition unit 15 that it is raining, the control unit 16 may prioritize and select the item of ON / OFF of the wiper. In addition, when it is determined by the sensor information acquisition unit 15 that the time zone is the evening, the control unit 16 may prioritize and select the ON / OFF item of the light of the vehicle.

  As described above, the inter-vehicle communication device 10 functions as an example of a selection unit that selects an item to be prioritized according to the movement environment information, out of a plurality of items of mobile body information including information on operation control of the mobile body. The inter-vehicle communication device 10 functions as an example of a selection unit that preferentially selects items related to automatic driving when the mobile unit moves in a place dedicated to the mobile unit. The inter-vehicle communication device 10 functions as an example of selection means for selecting mobile object information of an item to be prioritized according to the result of comparison between current position information and map information among mobile object information of a plurality of items of mobile objects. Do.

  Next, the inter-vehicle communication device 10 reads the statistic for the item (step S26).

  As described above, the inter-vehicle communication device 10 functions as an example of an acquisition unit that acquires the statistic for the used item among the items of the transmission information.

  Next, the inter-vehicle communication device 10 generates transmission information (step S27). Specifically, the control unit 16 sets the priority to be high so that the item selected in step S25 is included, and determines the item to be included in the transmission information from the data size of the item.

  As shown in FIGS. 13 and 14, when there are required items and optional items, the required information may be included in the transmission information. For example, as shown in FIG. 14, even when the control attribute is driving in the safe driving support mode and the driver state item is prioritized, the control attribute level item may be an essential item.

  Also, as shown in FIG. 13 and FIG. 14, after determining the required items, if the item selected in step S25 is not a required item, the control unit 16 sets the item above the option items as the required item. You may do so.

  When the item of ON / OFF of the light of the vehicle (an example of the item prioritized according to the movement environment information) is selected in step S25, as shown in FIG. 13, in the optional item, ON / OFF of the light of the vehicle Items in the top rank. Note that, as shown in FIG. 13, the items of high accuracy position information which are essential items and the item of control attribute level are examples of the items which are essential regardless of the items which are prioritized according to the movement environment information.

  When the item of ON / OFF of the wiper (an example of the item to be prioritized according to the movement environment information) is selected in step S25, as shown in FIG. Come on. Note that, as shown in FIG. 14, the driver's condition item and the surrounding vehicle information item, which are essential items, are an example of the items that are essential regardless of the items prioritized according to the traveling environment information.

  In addition, the control unit 16 may select high-order items (for example, three high-order items) with high frequency of use for reception. The control unit 16 may determine the items to be included in the transmission information by weighting the items according to the frequency of use. Whether the item is an item selected in step S 25 (an example of the item to be prioritized according to the mobile environment information), whether it is an essential item, and whether the item is frequently used is weighted in total The control unit 16 may then determine an item to be included in the transmission information. As described above, the inter-vehicle communication device 10 may function as an example of a selection unit that selects an item to be prioritized according to the statistic and the moving environment information.

  Furthermore, when the control attribute of many vehicles around is estimated as automatic driving in step S24, for example, as shown in FIG. 13, an item is determined. Items of high precision position information necessary for automatic operation, and items of control attribute level are ranked high. Then, in the option item, the item of ON / OFF of the light of the vehicle which is the item selected in step S25 comes to the upper rank, and the item of the lane keeping function state additionally necessary for automatic driving, the distance keeping function Items of state, items of forward vehicle following function state come in.

  When the host vehicle 5 is in the vicinity of the junction, the entry of the entry information may be ranked higher in the essential items.

  When it is estimated that the control attribute of many vehicles around is safe driving support mode in step S24, for example, as shown in FIG. 14, an item is determined. For example, in the required items, the driver's condition item and the peripheral vehicle item are ranked high. Then, in the option item, the item of ON / OFF of the wiper of the vehicle, which is the item selected in step S25, comes to the top, and the item of destination information and the item of route information come in.

  Whether it is an item selected in step S25, whether it is an essential item, whether it is an item with a high frequency of use, it is weighted with the total of the control attributes of the many vehicles around the estimated. The control unit 16 may determine an item to be included in the transmission information.

  After determining the items to be included in the transmission information, the control unit 16 acquires information corresponding to the items to be included in the determined transmission information, and generates the transmission information.

  As described above, the inter-vehicle communication device 10 transmits, to the other moving body, the moving body information of the item to be prioritized according to the moving environment information among the moving body information of the plurality of items related to the moving body. It functions as an example of an information generation unit that generates information. The inter-vehicle communication device 10 functions as an example of an information generation means for generating transmission information to be transmitted to another mobile body capable of communication between a mobile body and the mobile body, including mobile body information of the item selected by the selection means. Do. The inter-vehicle communication device 10 functions as an example of a required item selection unit that selects a required item regardless of the prioritized item according to the movement environment information. The inter-vehicle communication device 10 functions as an example of an information generation unit that generates transmission information including mobile object information of the essential items. The inter-vehicle communication device 10 functions as an example of an information generation unit that generates the transmission information including mobile object information of the selected item. The inter-vehicle communication device 10 functions as an example of an information generation unit that generates transmission information including at least mobile object information of an item related to automatic driving as mobile object information of an item to be prioritized.

  Next, the inter-vehicle communication device 10 transmits the transmission information (step S28).

  As described above, according to the operation according to the embodiment, since the vehicle information of the item matched to the vehicle environment information can be preferentially included in the transmission information, even if the data amount of the transmission data is limited The information can be effectively used by the mobile unit on the receiving side via inter-vehicle communication.

  If you select the required mandatory items regardless of the prioritized items according to the mobile environment information and generate the transmission information including the mobile entity information of the mandatory items, the mandatory items are always included, so the mobile entity on the receiving side Information can be used effectively.

  Among the items of the transmission information, when acquiring the statistic for the used item and selecting the priority item according to the statistic and the vehicle environment information, include the vehicle information of the item with high utility value statistically Since the information can be used, the information can be used effectively by the mobile station on the receiving side.

  In addition, when the vehicle 5 travels on a vehicle-dedicated road, such as an expressway, if items related to automatic driving are selected with priority, there is a high possibility that automatic driving is functioning on the vehicle-dedicated road. The information can be effectively used by the mobile unit on the receiving side where automatic driving is functioning.

1: Information generation device 1a: Acquisition means 1b: Information generation means 5: Vehicle (mobile body)
10: Inter-vehicle communication device (information generation device)
S: Inter-vehicle communication system

Claims (7)

An information generator that can be mounted on a mobile, and
Acquisition means for acquiring mobile environment information on a mobile environment in which the mobile body moves;
Information generation means for generating transmission information to be transmitted to another mobile body, including mobile body information of an item prioritized according to the mobile environment information among mobile body information of a plurality of items related to the mobile body;
An information generating apparatus comprising: In the information generation apparatus according to claim 1,
The mobile device further comprises selection means for selecting mobile object information of an item to be prioritized according to the moving environment information among the mobile object information of the plurality of items;
The moving environment information includes current position information of the moving object and map information based on the current position information,
The selecting means selects mobile object information of an item to be prioritized according to a result of comparison between the current position information and the map information among mobile object information of a plurality of items of the mobile object,
The information generation apparatus, wherein the information generation unit generates the transmission information including mobile entity information of a selected item. In the information generation device according to claim 1 or 2,
When the mobile is moving in a place dedicated to the mobile,
The information generation apparatus, wherein the information generation unit generates the transmission information including at least moving object information of an item related to automatic driving as moving object information of an item to be prioritized. The information generation apparatus according to any one of claims 1 to 3.
The system further comprises mandatory item selection means for selecting mandatory items which are essential regardless of the priority items according to the moving environment information,
The information generation apparatus, wherein the information generation means generates the mobile information of the required item in the transmission information. The information generation apparatus according to any one of claims 1 to 4.
An information generating apparatus, further comprising: communication means for transmitting the transmission information to a communication apparatus mounted on another mobile unit existing in a communicable range from the position of the mobile unit. An acquiring step of acquiring moving environment information on a moving environment in which the moving body moves;
The information generation unit generates transmission information to be transmitted to another mobile body, including mobile body information of an item to be prioritized according to the mobile environment information among mobile body information of a plurality of items related to the mobile body. An information generation step,
How to generate information, including   A program for an information generation device, which causes a computer to function as the information generation device according to any one of claims 1 to 5.

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