JP2019057140A - Map data structure - Google Patents

Abstract

To provide a map data structure and an information output device capable of alleviating a traffic jam.SOLUTION: A point on a road is associated with driving instruction information for use in alleviating a traffic jam. A server device 10 acquires a current position of a vehicle. When the current position of the vehicle is the point associated with the driving instruction information, the server device outputs driving instruction information, which is appended to the point, to onboard equipment 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a map data structure and an information output device.

  Conventionally, the map data structure described above is composed of road and facility information (Patent Documents 1 and 2). However, the problem that conventional map data does not have a mechanism for reducing traffic jams is an example.

JP 2006-153832 A JP 2017-90239 A

  This invention makes it an example of a subject to cope with such a problem. That is, an object of the present invention is to provide, for example, a map data structure and an information output device that can alleviate congestion.

  The map data structure according to claim 1 made to solve the above-described problem is characterized in that a point on the road is associated with driving instruction information for reducing traffic congestion.

  An information output device according to claim 6 is an information output device using the map data structure according to claim 1, wherein an acquisition unit for acquiring a current position of the vehicle, and the current position of the vehicle is the driving instruction information. And an output unit that outputs the driving instruction information given to the point when the point is associated with the point.

It is a block diagram which shows one Example of the driving assistance system incorporating the information output device of this invention. It is a function block diagram of the server apparatus shown by FIG. It is a function block diagram of the vehicle equipment shown by FIG. It is a block diagram which shows one Example of the map data structure of this invention. It is explanatory drawing for demonstrating the fastener joining in a joining point. It is explanatory drawing for demonstrating the fastener merge in a roundabout. It is a flowchart which shows the process sequence of the server apparatus shown in FIG.

  Hereinafter, the map data structure concerning one Embodiment of this invention is demonstrated. A map data structure according to an embodiment of the present invention is characterized in that a point on a road is associated with driving instruction information for reducing traffic congestion. As a result, driving instruction information for mitigating traffic jams can be provided to a vehicle at a point where traffic jams are predicted to occur, and traffic jams can be mitigated.

  The driving instruction information may include information instructing fastener joining. Thereby, it is possible to alleviate the traffic jam at the junction where the traffic jam is expected to occur.

  The driving instruction information may include information indicating a lane to be traveled. As a result, the lane change can be performed early at a point before the construction or accident point, and the traffic jam at the construction or accident point can be alleviated.

  The driving instruction information may include information instructing switching from manual driving to automatic driving. As a result, automatic driving can be switched to automatic driving at a point where traffic congestion is reduced, and traffic congestion can be reduced.

  The driving instruction information includes information instructing not to reduce the speed of the vehicle. As a result, it is possible to alleviate traffic jams at points where traffic jams are likely to occur due to speed reductions such as slopes and tunnel entrances.

  An information output device according to an embodiment of the present invention is an information output device that uses the above-described map data structure, an acquisition unit that acquires a current position of a vehicle, and the current position of the vehicle is the driving instruction information. An output unit that outputs driving instruction information given to the point when the point is associated with the point. Thereby, a traffic jam can be eased.

  Hereinafter, a driving support system incorporating a map data structure and an information output device according to an embodiment of the present invention will be described with reference to FIGS.

  The driving support system 1 includes a server device 10 as an information output device, and an in-vehicle device 11 that is a terminal that can communicate with the server device 10. The in-vehicle device 11 is composed of a navigation device mounted on the vehicle 2 or the like, for example. The server device 10 can communicate with the in-vehicle device 11 via a network N such as the Internet. In the present embodiment, the vehicle-mounted device 11 mounted on the vehicle 2 is described as an example of a terminal that can communicate with the server device 10, but a mobile terminal such as a smartphone may be used.

  The server device 10 is installed in an office or the like that provides map data.

  A functional configuration of the server apparatus 10 is shown in FIG. The server device 10 includes a control unit 10A, a communication unit 10B, and a storage unit 10C.

  The control unit 10 </ b> A functions as a processor such as a CPU (Central Processing Unit) of the server apparatus 10 and controls the entire server apparatus 10. 10 A of control parts perform driving assistance with reference to map data based on the positional information transmitted from the vehicle equipment 11.

  The communication unit 10B functions as a network interface of the server device 10 and acquires position information from the in-vehicle device 11.

  The storage unit 10C functions as a storage device such as a hard disk of the server device 10, and stores map data. As shown in FIG. 4, the map data structure D includes static data D1 such as a road network N1 and dynamic data D2 having a higher update frequency than the static data D1. The road network N1 includes, for example, a node ND set on a road such as an intersection, a line segment connecting the node ND and the node ND, and a link R along the road.

  The node ND is data provided for each feature and including attribute information. As the features of the node ND, there are all objects that are desired to be represented by points on the map, such as intersections, road signs, and traffic lights. The attribute information is information indicating the attribute of the feature, and includes position information (latitude, longitude) and the like. In this embodiment, in addition to well-known features such as intersections, road signs, traffic lights, etc., a congestion reducing node ND is provided, and as attribute information, position information on the road where the congestion is likely to occur, and congestion reduction at that position Driving instruction information for Thereby, the point on the road and the driving instruction information can be associated with each other.

  As a position on the road where traffic congestion is likely to occur, for example, there is a junction. In the present embodiment, a congestion alleviation node ND is attached to the junction. Then, for example, driving instruction information for instructing fastener joining is attached to the attribute information of the congestion alleviating node ND. As shown in FIGS. 5 and 6, the fastener merger travels on the vehicle 2 and the second road R2 that travel on the first road R1 at the merge point P1 where the first road R1 and the second road R2 merge. The vehicle 2 is merged so that a predetermined number of vehicles enter alternately. In the example shown in FIGS. 5 and 6, the fasteners are alternately joined one by one (= predetermined). Such information for instructing fastener merging is attached as attribute information of the traffic congestion alleviating node ND at the merging point on the highway or the merging point on the roundabout.

  Moreover, as a position on the road where traffic congestion is likely to occur, for example, there are an uphill and a tunnel entrance. Congestion is likely to occur on the uphill and tunnel entrances due to speed reduction. In the present embodiment, a traffic jam alleviating node ND is attached to a point of an uphill or a tunnel entrance. Then, for example, information for instructing switching from manual driving to adaptive cruise control (ACC) or information for instructing not to reduce the speed of the vehicle is attached to the attribute information of the traffic congestion alleviating node ND. The Here, ACC is a type of automatic driving, which measures the distance from the preceding vehicle and automatically accelerates / decelerates up to a preset speed, maintaining a constant inter-vehicle distance and at a constant speed. Say what you run.

  The link R configuring the road network N1 described above is also provided for each feature and is data including attribute information. As the features of the link R, there are all things such as roadways and lanes that are desired to be represented by lines on a map.

  Next, the dynamic data D2 will be described. The dynamic data D2 includes, for example, data having a higher update frequency than static data such as lane information D3 (FIG. 4) regulated by road construction, lane information regulated by an accident, and traffic lane information. included. The dynamic data D2 is divided into, for example, dynamic data of less than 1 sec, quasi-dynamic data of less than 1 min, and quasi-static data of less than 1 hour depending on the update frequency. The lane information D3 regulated by the road construction is quasi-static data. Further, the lane information regulated by the accident and the lane information that is congested are quasi-dynamic data or quasi-static data.

  The lane information D3 described above is represented by a link (line) as shown in FIG. 4, and is linked to the lane link R of the road network N1. Thereby, for example, it can be understood from which lane to where the lane is regulated. In the present embodiment, in addition to the restricted lane information, a traffic congestion alleviating node ND is provided in the dynamic data D2, and as its attribute information, position information on the road and driving instruction information for reducing traffic congestion at that position And are given.

  As the position on the road, there is a point a predetermined distance before the start point of the regulated lane, and in this embodiment, a traffic jam alleviating node ND is attached to the point. Then, the driving instruction information for instructing the lane to be traveled is added to the attribute information of the congestion alleviating node ND at the point.

  The driving instruction information for instructing the lane to be traveled includes information indicating a lane that is not regulated and a lane that is not congested. In addition, the information indicating the lane to be traveled may be information that indicates the lane to be traveled, and may include information indicating a lane that should not travel (regulated lanes, traffic lanes that are congested). Good. The static data D1 and the dynamic data D2 are associated with coordinates, and a point on the road is associated with the driving instruction information.

  Further, the position on the road includes a start point of a restricted lane, and in this embodiment, a traffic jam alleviating node ND is attached to the start point. Then, the operation instruction information for instructing the fastener joining is attached to the attribute information of the congestion alleviating node ND at the start point.

  Next, the structure of the vehicle equipment 11 is demonstrated using FIG. The in-vehicle device 11 includes a control unit 11A, a communication unit 11B, and a sensor unit 11C.

  In the control unit 11A, a processor such as a CPU of the in-vehicle device 11 functions to control the entire in-vehicle device 11. The control unit 11A transmits travel information including the position information obtained from the sensor unit 11C to the server device 10.

  The communication unit 11B functions as a network interface of the in-vehicle device 11 and transmits travel information.

  The sensor unit 11C includes a GPS (Global Positioning System) receiver that detects the current position of the vehicle.

  Next, operation | movement of the driving assistance system 1 of a present Example is demonstrated with reference to the flowchart of FIG. The in-vehicle device 11 periodically transmits position information. When the server apparatus 10 functions as an acquisition unit and receives position information (Y in step S1), the map data (including static data D1 and dynamic data D2) around the position information is transmitted to the in-vehicle device 11 (step S2). ). The in-vehicle device 11 functions as an output unit, and the position information received by the sensor unit 11C among the static data D1 and the dynamic data D2 is at a point associated with the driving instruction information. Driving instruction information is output (step S3). Upon receiving the driving instruction information, an onboard device 11 or an ECU (Electronic Control Unit) of the vehicle 2 (not shown) controls acceleration, steering, braking, and the like of the vehicle according to the driving instruction information.

  According to the above-described embodiment, for example, when the vehicle 2 is in automatic operation and receives driving instruction information instructing fastener joining, the vehicle-mounted device 11 accelerates, steers, and brakes the vehicle so that the fasteners join. To control.

  In addition, when the vehicle 2 is manually operated, when switching to ACC or driving instruction information instructing not to reduce the speed is received, the vehicle-mounted device 11 automatically switches to ACC.

  In addition, when the vehicle 2 receives driving instruction information for instructing a lane to be traveled during automatic driving, the in-vehicle device 11 controls acceleration, steering, and braking of the vehicle so as to automatically move to the lane. .

  According to the embodiment described above, the map data structure associates points on the road with driving instruction information for reducing traffic congestion. As a result, driving instruction information for mitigating traffic jams can be provided to a vehicle at a point where traffic jams are predicted to occur, and traffic jams can be mitigated.

  Further, the operation instruction information includes information for instructing fastener joining. Thereby, it is possible to alleviate the traffic jam at the junction where the traffic jam is expected to occur.

  The driving instruction information includes information indicating a lane to be traveled. As a result, it is possible to reduce the traffic congestion around the construction or the accident point by changing the lane earlier than the regulated lane such as the construction or the accident point.

  The driving instruction information includes information instructing switching from manual driving to automatic driving. Thereby, compared with manual driving | operation, control by automatic driving | operation can be switched to automatic driving | operation at the point where traffic congestion eases, and traffic congestion can be eased.

  The driving instruction information includes information for instructing not to reduce the speed of the vehicle. As a result, it is possible to reduce traffic jams at points where traffic jams are likely to occur due to speed reductions such as slopes and tunnel entrances.

  In the above-described embodiment, the server device 10 transmits (distributes) both the dynamic data D2 and the static data D1 to the in-vehicle device 11, but the present invention is not limited to this. The static data D1 may be stored in the in-vehicle device 11 in advance, and the server device 10 may distribute only the dynamic data D2.

  Moreover, in the Example mentioned above, although the vehicle equipment 11 controlled acceleration, steering, and braking of a vehicle, if driving instruction information was received, it is not restricted to this. The vehicle-mounted device 11 may only notify the driving instruction information received to the driver.

  Moreover, according to the Example mentioned above, although the server apparatus 10 performed the determination whether the positional information on the vehicle 2 exists in the point linked | related with driving instruction information from map data, it was restricted to this It is not a thing. The server device 10 only transmits map data, and determines from the map data received by the vehicle-mounted device 11 whether or not the position information of the vehicle 2 is at a point associated with the driving instruction information. Good.

  Further, according to the above-described embodiment, the driving instruction information is attached to the node ND, but is not limited to this. Driving instruction information may be attached to the attribute information of the link R that is a collection of points. For example, a link R from a start point to an end point such as a slope or a tunnel may be used as a traffic jam alleviation link R, and information indicating switching to ACC or instructing not to reduce the speed may be added as attribute information.

  In the above-described embodiment, the information for instructing the switching from the manual operation to the automatic operation is exemplified as the information for instructing the switching to the ACC. However, the information is not limited to this. It may be an instruction to switch to fully automatic driving that automates not only acceleration and braking but also steering.

  The present invention is not limited to the above embodiment. That is, various modifications can be made without departing from the scope of the present invention.

10 Server device (information output unit)
10A Control unit (output unit)
10B communication unit (acquisition unit)

Claims (6)

  A map data structure characterized in that a point on a road is associated with driving instruction information for reducing traffic congestion.   The map data structure according to claim 1, wherein the driving instruction information includes information instructing fastener joining.   The map data structure according to claim 1, wherein the driving instruction information includes information indicating a lane to be traveled.   The map data structure according to any one of claims 1 to 3, wherein the driving instruction information includes information instructing switching from manual driving to automatic driving.   The map data structure according to any one of claims 1 to 4, wherein the driving instruction information includes information instructing not to reduce a speed of the vehicle. An information output device using the map data structure according to any one of claims 1 to 5,
An acquisition unit for acquiring the current position of the vehicle;
And an output unit that outputs driving instruction information given to the point when the current position of the vehicle is at a point associated with the driving instruction information.

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