JP6943804B2 - Information processing device, method to guide lane change, computer program - Google Patents

Description

The present invention relates to a technique for guiding a lane change.

Conventionally, there has been known a technique of guiding a route to a destination to a user of an information processing device by using an information processing device such as a smartphone or a car navigation device. Further, in such a technique, it is known that a user acquires a degree of congestion on a traveling road and searches for a route in consideration of the acquired degree of congestion.

Conventionally, information on the degree of traffic congestion on roads has generally been provided for each road. However, in the case of a large road with multiple lanes, for example, only the right turn waiting lane is congested, while the other lanes are proceeding smoothly. Therefore, it has been desired to provide guidance in consideration of the degree of congestion in each lane. In this regard, Patent Document 1 describes a route identification device for acquiring a lane travel time from waiting for a signal for each lane at an intersection to passing through the intersection, and using the acquired lane travel time to reach an arbitrary point. Is described to identify.

Japanese Unexamined Patent Publication No. 2010-43917

However, in the technique described in Patent Document 1, there is a problem that the route identification device only changes the route to be selected according to the lane travel time, and cannot guide the degree of congestion for each lane within the same route. rice field. In addition, such a problem is not limited to the technology of guiding the route to the destination, and when traveling without determining the destination, the technology of guiding the current position and the road condition of the traveling road are guided. It was a common issue for the technology to be used.

Therefore, there has been a demand for an information processing device capable of guiding a lane change in consideration of the degree of congestion in each lane.

The present invention has been made to solve at least a part of the above-mentioned problems, and can be realized as the following forms. An information processing device, a current position information acquisition unit that acquires current position information indicating the current position of a moving body on which the information processing device is mounted, a traveling lane in which the moving body travels, and a traveling body in which the moving body travels. The lane information acquisition unit that acquires lane information including the degree of congestion for each lane on the road, and the point from the current position to the point ahead of the moving body in the traveling direction in a shorter time than other lanes. A guide unit for finding the shortest lane that can be reached and guiding a lane change to the shortest lane when the obtained shortest lane and the traveling lane are different is provided, and the guide unit is provided with the movement. For each lane on the road on which the body travels, the travel time from the current position to the point, which is the sum of the first travel time and the second travel time, is obtained, and the travel time is the most travel time. The short lane is the shortest lane, the first travel time is the time required to change lanes from the traveling lane, which is set according to the degree of congestion for each lane, and the second travel time is the lane change. It is the time required to travel to the above point using the latter lane, and the guide unit obtains the shortest lane when there is a portion where the degree of congestion is unknown in front of the moving body in the traveling direction. An information processing device that sets the point between the current position and the unknown part. In addition, the present invention can also be realized in the following forms.

(1) According to one embodiment of the present invention, an information processing device is provided. This information processing device includes a current position information acquisition unit that acquires current position information representing the current position of a moving body on which the information processing device is mounted, a traveling lane in which the moving body travels, and a traveling body in which the moving body travels. A lane information acquisition unit that acquires lane information including the degree of congestion for each lane on the road, and a point in front of the moving body in the traveling direction from the current position can be reached in a shorter time than other lanes. It is provided with a guide unit for finding the shortest lane that can be formed and guiding the change of lane to the shortest lane when the obtained shortest lane and the traveling lane are different from each other.

According to this configuration, the lane information acquisition unit acquires the degree of congestion for each lane on the road on which the moving body equipped with the information processing device travels, and the guide unit moves forward from the current position of the moving body in the traveling direction. Find the shortest lane that can reach a certain point in a short time compared to other lanes, and change the lane to the shortest lane when the found shortest lane and the driving lane in which the moving object travels are different. invite. Therefore, according to the information processing device of this configuration, it is possible to guide the user to change lanes in consideration of the degree of congestion for each lane.

(2) In the information processing device of the above-described embodiment, the guide unit may obtain the shortest lane using the traveling lane when there is no change in the traveling lane for a predetermined first time or more. The lane information is provided to the lane information acquisition unit based on the current position determined by, for example, GPS (Global Positioning System) or QZSS (Quasi-Zenith Satellite System). Due to the variation in the positioning of the current position, the lane information acquisition unit may be provided with lane information such that the moving body frequently moves back and forth between the two lanes. Such a phenomenon is particularly remarkable when the moving body is traveling near the boundary between the two lanes. According to this configuration, when there is no change in the traveling lane for the first hour or more, the guide unit uses the traveling lane to compare with the shortest lane (from the current position to a point ahead in the traveling direction with other lanes). Since the lane that can be reached in a short time) is obtained, the influence of the variation in the positioning of the current position on the shortest lane can be reduced.

(3) In the information processing device of the above-described embodiment, the guide unit compares the travel time to the point when using the shortest lane with the travel time to the point when using the traveling lane. If the time is not shortened by the predetermined second time or more, the guidance for changing lanes may be canceled. According to this configuration, the guidance unit cancels the guidance for changing lanes if the travel time when using the shortest lane is not shortened by a predetermined second hour or more as compared with the travel time when using the traveling lane. Therefore, it is possible to suppress the guidance for changing lanes, which has a small effect of shortening the travel time, and it is possible to reduce the annoyance felt by the user due to the frequent guidance for changing lanes.

(4) The information processing apparatus of the above-described form further includes a route information acquisition unit that acquires route information representing a route from a departure point to a destination, and the guidance unit is described in addition to the guidance for changing lanes. When the route guidance using the route information is performed and the distance between the right / left turn point based on the route information and the current position is equal to or less than a predetermined first distance, the guidance for changing lanes may be stopped. According to this configuration, the guidance unit provides route guidance using route information indicating the route from the departure point to the destination in addition to the guidance for changing lanes, so that the convenience for the user can be improved. In addition, if the distance between the right / left turn point based on the route information and the current position of the moving object is less than or equal to the predetermined first distance, the guidance unit will stop the guidance for changing lanes. And, it is possible to prevent duplication of lane change guidance.

(5) In the information processing device of the above-described embodiment, the guide unit sequentially guides the lane change by using the latest current position, the traveling lane, and the lane information associated with the traveling of the moving body. If there is no change between the driving lane and the latest driving lane when the previous lane change guidance was performed, and the content of the lane change guidance is the same, the lane is changed. You may cancel the change guidance. According to this configuration, the guide unit provides guidance for changing lanes sequentially using the latest current position, lane, and lane information associated with the traveling of the moving body, which makes it more convenient for the user. Can be improved. In addition, the guidance section cancels the lane change guidance if there is no change between the driving lane when the previous lane change guidance was given and the latest driving lane, and the content of the lane change guidance is the same. Therefore, it is possible to reduce the annoyance felt by the user by repeatedly guiding the same content while the user is continuously traveling in the same lane.

(6) In the information processing device of the above-described embodiment, the guide unit sequentially guides the lane change by using the latest current position, the traveling lane, and the lane information associated with the traveling of the moving body. If the elapsed time from the previous implementation of the lane change guidance is within a predetermined third hour, the lane change guidance may be canceled. According to this configuration, the guide unit provides guidance for changing lanes sequentially using the latest current position, lane, and lane information associated with the traveling of the moving body, which makes it more convenient for the user. Can be improved. In addition, if the elapsed time from the previous guidance for changing lanes is within the specified third hour, the guidance section will stop the guidance for changing lanes, so the guidance for changing lanes will be given frequently. The annoyance felt by the user can be reduced.

(7) In the information processing apparatus of the above-described embodiment, when there is a portion where the degree of congestion is unknown in front of the moving body in the traveling direction, the guide unit sets the point at which the shortest lane is obtained as the current position. It may be set between the unknown part and the unknown part. According to this configuration, the guide unit can provide guidance for changing lanes even when there is a portion where the degree of congestion is unknown in front of the moving body in the traveling direction.

(8) In the information processing device of the above-described embodiment, the guide unit may suppress guidance for changing lanes to a lane in which the degree of congestion is unknown in front of the moving body in the traveling direction. According to this configuration, the guide unit can provide guidance for changing lanes even when there is a portion where the degree of congestion is unknown in front of the moving body in the traveling direction.

The present invention can be realized in various aspects, for example, an information processing device that guides a lane change without providing route guidance, an information processing device that provides route guidance and guides a lane change, and information on these. The method executed in the processing device, the guidance system including the information processing device, the computer program for realizing the functions of each of these devices and systems, the server device for distributing the computer program, and the temporary storage of the computer program. It can be realized in the form of a storage medium or the like.

It is a figure which shows the schematic structure of the information processing apparatus as one Embodiment of this invention. It is a figure which shows an example of the movement cost. It is a figure explaining lane information. It is a flowchart which shows an example of the processing procedure of a lane guidance process. It is a figure explaining the calculation method of the shortest lane. It is a figure explaining an example of the calculation method of the shortest lane when there is a part where the degree of congestion is unknown. It is a figure explaining another example of the calculation method of the shortest lane when there is a part where the degree of congestion is unknown. It is a figure which shows an example of a traveling lane and the shortest lane. It is a figure explaining the guidance cancellation condition c1. It is a figure explaining the guidance cancellation condition c1. It is a figure explaining the guidance cancellation condition c2. It is a figure explaining the guidance cancellation condition c2.

A. Embodiment:
FIG. 1 is a diagram showing a schematic configuration of an information processing device 10 as an embodiment of the present invention. The information processing device 10 acquires the degree of congestion for each lane on the road on which a vehicle or the like (hereinafter, also referred to as a "moving body") on which the information processing device 10 is mounted travels, and refers to the user of the information processing device 10. It is a device that guides lane changes. The guidance for changing lanes may be carried out together with the guidance for the route to the destination, or may be carried out when the vehicle is traveling without determining the destination. In addition, the guidance for changing lanes may be provided together with the guidance for the current position and road conditions when traveling without determining a destination.

The information processing device 10 of the present embodiment is a smartphone, and is a CPU 110, a storage unit 120, a communication unit 130, a ROM / RAM 140, an input / output unit 150, a current position information acquisition unit 160, and a lane information acquisition unit. 170 and each part are connected to each other by a bus (not shown).

The CPU 110 controls each part of the information processing apparatus 10 by expanding and executing a computer program stored in the ROM 140 in the RAM 140. The CPU 110 also functions as a guide unit 111 that executes the lane guidance process described later. The lane guidance process is a process of guiding the user of the information processing device 10 to change lanes.

FIG. 2 is a diagram showing an example of the movement cost 121. The storage unit 120 (FIG. 1) of the information processing device 10 is composed of a hard disk, a flash memory, a memory card, and the like. In the storage unit 120, for example, the movement cost 121 as shown in FIG. 2 is stored in advance. The movement cost 121 stores a value representing the time (seconds) required for the moving body to change lanes, which is obtained by a preliminary test or the like. In FIG. 2, "S" means that the degree of congestion in the lane is smooth, and "C" means that the degree of congestion in the lane is congestion, and "J". Means that the degree of congestion in the lane is Jam. In addition, the "moving source lane" means the degree of congestion in the lane before the change (the lane in which the moving body is traveling) when the moving body tries to change lanes, and the "destination lane" means that the moving body tries to change lanes. It means the degree of congestion in the new lane.

For example, in the example of FIG. 2, the moving cost from the S (smooth) moving source lane to the S (smooth) moving destination lane is 2 seconds. Similarly, the cost of moving from the S (smooth) source lane to the C (congested) destination lane is 10 seconds, and moving from the S (smooth) source lane to the J (congested) destination lane. The cost is 40 seconds. Each value stored in the movement cost 121 may be configured so that the setting can be changed by the user.

The explanation will be continued by returning to FIG. The communication unit 130 controls communication with other devices via a communication interface (not shown). By connecting to the Internet via a communication carrier (not shown) by the communication unit 130, the information processing device 10 can communicate with a server provided on the Internet.

The input / output unit 150 is various interfaces used for inputting / outputting information to / from the user. As the input / output unit 150, for example, a touch panel as an input unit, an operation button, a microphone, a touch panel as an output unit, a liquid crystal panel, a speaker, an LED (Light Emitting Diode) indicator, and the like can be adopted. Hereinafter, the touch panel will be described as an example of the input / output unit 150.

The current position information acquisition unit 160 receives radio waves transmitted from artificial satellites constituting GPS (Global Positioning System) and QZSS (Quasi-Zenith Satellite System), and is an information processing device. The current position information (latitude and longitude) representing the current position of 10 is acquired. In the present embodiment, since the information processing device 10 is mounted on the moving body, the current position acquired by the current position information acquisition unit 160 can be equated with the current position of the moving body.

The lane information acquisition unit 170 acquires (receives) lane information based on the current position information acquired by the current position information acquisition unit 160 and road network data (not shown) indicating each road including the road L0 (FIG. 3). )do. In the present embodiment, the lane information received by the lane information acquisition unit 170 includes the following information a1 and a2.
(A1) The lane in which the moving body on which the information processing device 10 is mounted is located (hereinafter, also referred to as the "traveling lane" of the moving body).
(A2) Degree of congestion for each lane on the road on which the moving body equipped with the information processing device 10 is located (running)

FIG. 3 is a diagram for explaining lane information. FIG. 3 illustrates a case where the road L0 on which the moving body travels includes four lanes L1 to L4. The road network data indicating each road including the road L0 is logically divided into ranges R2001, R2002, and R2003 for each predetermined distance, and each range of each lane is managed as one area. In the present embodiment, the case where the length of each range when the road L0 is a general road is 250 meters and the length of each range when the road L0 is an expressway is 800 meters is illustrated. In this embodiment, the case where the length of each range is the same is illustrated, but the length of each range may be different.

Of the lane information received by the lane information acquisition unit 170, the traveling lane (information a1) is information indicating in which area the moving body is located, in other words, in which range of which lane the moving body is located. Information that represents. Of the lane information, the degree of congestion for each lane (information a2) is information indicating the degree of congestion in each area on the road L0 on which the moving body travels, and as shown by the balloon in FIG. 3, the degree of congestion in each area (information a2). (S, C, J) and the travel time (seconds) required to pass through the area are included. In FIG. 3 and similar figures thereafter, dot hatching is added to the area where the degree of congestion is S (smooth), diagonal hatching is added to the area where C (congestion), and cross hatching is applied to the area where congestion is J (congestion). Attach.

For example, in the example of FIG. 3, the traveling lane (information a1) of the moving body is the range R2001 of the lane L2. As for the degree of congestion (information a2) for each lane, the range R2001 of the lane L1 is the degree of congestion S (smooth) and the travel time is 85 seconds, the range R2002 of the lane L1 is the degree of congestion S and the travel time is 60 seconds, and the lane L1. The range R2003 is the degree of congestion J (traffic jam) and the travel time is 360 seconds, ..., The range R2003 of the lane L4 is the degree of congestion J and the travel time is 280 seconds. As described above, the lane information acquisition unit 170 covers all lanes with respect to at least the range R2001 including the current position PL and a predetermined number of ranges R2002 and R2003 in front of the traveling direction with reference to the current position PL of the moving body. Acquire the degree of congestion (information a2) for each lane.

FIG. 4 is a flowchart showing an example of the processing procedure of the lane guidance processing. The lane guidance process is a process of guiding the user of the information processing device 10 to change lanes while the moving body equipped with the information processing device 10 is traveling, and can be started at an arbitrary timing. For example, the lane guidance process may be started at the same time as the application of the guide unit 111 is started.

In step S10, the guide unit 111 acquires the current position information representing the current position of the moving body from the current position information acquisition unit 160. In step S12, the guide unit 111 acquires lane information including the information a1 and a2 described in FIG. 3 from the lane information acquisition unit 170.

In step S14, the guide unit 111 determines whether or not there is any change in the traveling lane (information a1) of the moving body acquired in step S12 for a predetermined first time or longer. If there is a change in the traveling lane before the lapse of the first time (step S14: NO), or if there is no information on the past traveling lane at the time of the first execution of step S14, the guide unit 111 processes the process to step S10. Make a transition and continue monitoring. On the other hand, when there is no change in the traveling lane for the first hour or more (step S14: YES), the guide unit 111 shifts the process to step S16. It is assumed that the first time is set in advance and stored in the storage unit 120, and is 10 seconds in the present embodiment. The first hour may be configured so that the setting can be changed by the user.

FIG. 5 is a diagram illustrating a method of calculating the shortest lane. In step S16 of FIG. 4, the guide unit 111 obtains the shortest lane. In the present embodiment, the "shortest lane" is a lane that can be reached from the current position PL of the moving body shown in FIG. 5 to the point P in front of the moving body in the traveling direction in a shorter time than other lanes. means. The point P can be arbitrarily determined, and in the present embodiment, it is set as a point separated from the current position PL of the moving body by the inspection distance TD. It is assumed that the inspection distance TD is set in advance and stored in the storage unit 120. In the present embodiment, the inspection distance TD is 700 meters when the road L0 is a general road and 2000 meters when the road L0 is an expressway. The inspection distance TD may be configured so that the setting can be changed by the user.

Specifically, the guide unit 111 calculates the shortest lane according to the following steps b1 and b2.
(B1) The travel time from the current position PL to the point P in each lane is calculated. The travel time of each lane can be calculated by performing the calculation using the following equation 1 while changing the lane Ln (n is a natural number, n = 1 to 4 in the case of FIG. 5).
Travel time in lane Ln = Travel time required to change lane from driving lane to lane Ln x + Travel time required to travel the inspection distance TD using lane Ln y ... (1)

For example, in the example of FIG. 5, the travel time in the lane L4 is the time obtained by adding the next travel time x and the travel time y.
Travel time x = Time required to change lane from driving lane L2 to adjacent lane L3 Ct1 + Time required to change lane from lane L3 to lane L4 Ct2
Travel time y = time required to travel range R2001 using lane L4 time Ct3 + time required to travel range R2002 using lane L4 Range R2003 (up to point P) using lane L4 using travel time Ct4 + lane L4 Time required to run Ct5

The guide unit 111 obtains the actual time for the times Ct1 and 2 required for changing lanes by referring to the time (seconds) stored in the movement cost 121 described with reference to FIG. For example, with respect to time Ct1, the degree of congestion in the traveling lane L2, which is the source lane, is S (smooth), and the degree of congestion in the adjacent lane L3 is C (congestion). Is. Similarly, with respect to time Ct2, the degree of congestion in lane L3, which is the source lane, is C (congestion), and the degree of congestion in lane L4 is C (congestion). Therefore, the travel cost 121 to time Ct2 is 15 seconds. .. Therefore, the travel time x is 10 + 15 = 25 seconds.

The guide unit 111 determines the travel time required to pass through each area included in the congestion degree (information a2) for each lane acquired in step S12 for the time Ct3, 4, and 5 required for traveling at the inspection distance TD. Refer to it to find the actual time. At this time, the guide unit 111 calculates the time Ct3, 4, 5 by apportioning the travel time using the distance that the moving body actually needs to travel in each range. For example, when the current position PL of the moving body is located in the center of the range R2001, the time Ct3 is the travel time of the range R2001 of 120 seconds / 2 = 60 seconds. The time Ct4 is a travel time of 90 seconds in the range R2002. When the point P is located in the center of the range R2003, the time Ct5 is the travel time of the range R2003 280 seconds / 2 = 140 seconds. Therefore, the travel time y is 60 + 90 + 140 = 290 seconds. As a result, the travel time in lane L4 = x + y = 315 seconds.

(B2) The guide unit 111 compares the travel times in the lanes L1 to L4 obtained in the procedure b1 described above, and sets the lane with the shortest travel time as the "shortest lane". When a plurality of shortest lanes are obtained, for example, when the travel time between lanes L1 and L3 is the same, the guide unit 111 determines the shortest lane according to the regulations of the country in which the information processing device 10 is used. May be good. For example, in Japan, it is stipulated that the vehicle travels on the left side, so the guide unit 111 can be the right lane (that is, lane L3) which is the overtaking lane over the shortest lane. On the other hand, in a country with right-hand traffic such as the United States, the guide unit 111 can be the left lane (that is, lane L1) which is the overtaking lane over the shortest lane.

FIG. 6 is a diagram illustrating an example of a method of calculating the shortest lane when there is a portion where the degree of congestion is unknown. In the above description of FIG. 5, in the congestion degree (information a2) for each lane acquired in step S12, there is an example in which there is information on the congestion degree in all areas from the current position PL to the point P. However, it is assumed that there is an area between the current position PL and the point P where the degree of congestion is unknown and valid information is not included in the degree of congestion (information a2) in the lane information. For example, in FIG. 6, the degree of congestion between the area specified by the range R2002 of the lane L1, the area specified by the range R2003 of the lane L1 and the area specified by the range R2003 of the lane L4 is unknown (? Notation). The case where is is illustrated. In such a case, the guide unit 111 uses a new inspection distance TD'that shortens the inspection distance TD to set the point P'when finding the shortest lane between the current position PL and the area where the degree of congestion is unknown. May be set to. Then, the guide unit 111 may calculate the shortest lane using the new point P'. In the illustrated example, the point P'is set at the boundary between the range R2002 and the range R2001.

FIG. 7 is a diagram illustrating another example of a method of calculating the shortest lane when there is a portion where the degree of congestion is unknown. FIG. 7 illustrates a case where the degree of congestion is unknown (? Notation) in the same area as in FIG. In such a case, the guide unit 111 may obtain the shortest lane by excluding the lane having the region where the degree of congestion is unknown from the candidates of the procedure b1 in the calculation of the shortest lane. In other words, the guide unit 111 may execute the procedure b1 to obtain the shortest lane only for the lane in which the degree of congestion is unknown. In this way, in the procedure b1 in the calculation of the shortest lane, the travel time PT2 of the lane L2 and the travel time PT3 of the lane L3 are calculated, and the shortest lane is calculated from either of them (procedure b2). As a result, in the guidance (step S24) described later, guidance for changing lanes to a lane having an area where the degree of congestion is unknown is suppressed.

When the degree of congestion is unknown and there is an area in which the degree of congestion (information a2) in the lane information does not include valid information, the guide unit 111 may execute the process described with reference to FIG. The process described in the above may be executed. In this way, the guide unit 111 can provide guidance for changing lanes even if there is a portion in front of the moving body in the traveling direction where the degree of congestion is unknown.

When the traveling lane (information a1) of the moving body acquired in step S12 includes an area where the degree of congestion (information a2) is unknown, the guide unit 111 shifts the process to step S10 and steps S10 to S10. The process of S16 may be repeated.

In step S18 of FIG. 4, the guide unit 111 determines whether or not the traveling lane (information a1) of the moving body acquired in step S12 and the shortest lane obtained in step S16 are different from each other. When the traveling lane and the shortest lane are not different (the same lane) (step S18: NO), there is no need to guide the lane change, so the guidance unit 111 shifts the process to step S10, and steps S10 to S16. Repeat the process. On the other hand, when the traveling lane and the shortest lane are different (step S18: YES), in step S20, the guide unit 111 determines whether or not the travel time when the shortest lane is used is shortened by the second hour or more.

FIG. 8 is a diagram showing an example of a traveling lane and the shortest lane. In FIG. 8, the traveling lane (information a1) of the moving body is the lane L2, and the shortest lane obtained in step S16 is the lane L3. In step S20 of FIG. 4, the guide unit 111 determines the travel time from the shortest lane L3 to the travel time PT3 (solid line) among the travel times in each lane L1 to L4 obtained in step b1 in the calculation of the shortest lane. It is determined whether or not the time obtained by subtracting PT2 (broken line) is the second time or more. It is assumed that the second time is set in advance and stored in the storage unit 120, and is 30 seconds in the present embodiment. The second time may be configured so that the setting can be changed by the user. When the travel time is not shortened by the second time or more (step S20: NO), the guide unit 111 shifts the process to step S10 and repeats the processes of steps S10 to S16.

On the other hand, when the travel time is shortened by the second time or more (step S20: YES), in step S22, the guide unit 111 determines whether or not at least one of the guidance stop conditions shown in the following c1 to c3 is satisfied.
(C1) When the distance between the right / left turn point based on the route information and the current position of the moving object is the first distance or less (c2) When the traveling lane is the same and the content of the lane change guidance is the same. (C3) When the elapsed time from the previous lane change guidance is within the third hour

9 and 10 are diagrams for explaining the guidance stop condition c1. The guidance cancellation condition c1 is applied when the guidance for changing lanes is carried out together with the guidance for the route to the destination. In the known route guidance process, the information processing device 10 includes a route information acquisition unit (not shown). The route information acquisition unit acquires route information representing the route RT (FIGS. 9 and 10) from the departure point to the destination from, for example, a server provided on the Internet. The information processing device 10 uses the acquired route information to guide the route RT by displaying it on the input / output unit 150 or outputting voice. For example, in the example of FIG. 9, as the route guidance process, the information processing device 10 performs the voice guidance shown by the balloons marked with circles at each point, for example, 700, 300, 100 meters before the right turn point T. The information processing device 10 may draw the traveling direction on the map as a route guidance process instead of / or voice guidance.

The guidance stop condition c1 is a case where the distance between the right / left turn point based on the route information and the current position of the moving body acquired in step S10 is equal to or less than the first distance as described above. It is assumed that the first distance is set in advance and stored in the storage unit 120. In the present embodiment, the first distance is 300 meters when the road L0 is a general road and 1000 meters when the road L0 is an expressway. The first distance may be configured so that the setting can be changed by the user.

For example, in the example of FIG. 9, when the road L0 is a general road, the lane change guidance shown by the rectangular balloon is performed in the range A1 larger than 300 meters from the right turn point T of the route RT. On the other hand, in the range A2 within 300 meters from the right turn point T of the route RT, the guidance for changing lanes is canceled due to the guidance cancellation condition c1. In the example of FIG. 10, since there is no right / left turn point due to the route RT, the entire area is the range A1 in the illustrated range, and therefore the guidance for changing lanes is carried out in the entire area.

When the guidance stop condition c1 is satisfied (step S22: NO), the guidance unit 111 shifts the process to step S10 and repeats the processes of steps S10 to S16. In this way, the guidance unit 111 changes lanes when the distance between the right / left turn point T based on the route information and the current position of the moving body is equal to or less than the predetermined first distance (when the guidance cancellation condition c1 is satisfied). Since the guidance of the above is stopped, it is possible to prevent the guidance of turning left and right by the route guidance processing and the guidance of changing lanes from overlapping. Further, as described above, if the route guidance process using the route information indicating the route from the departure point to the destination is further performed in addition to the guidance for changing lanes (FIG. 4), the convenience for the user can be improved.

11 and 12 are diagrams for explaining the guidance stop condition c2. The guidance stop condition c2 is the traveling lane (information a1) of the moving body acquired in the previous step S12 and the traveling lane (information a1) of the moving body acquired in the current step S12 in the lane guidance processing (FIG. 4). ) Is the same, and the lane change guidance content guided in the previous step S24 and the lane change guidance content to be implemented by the guidance unit 111 in the current step S24 are the same. ..

For example, as shown in FIG. 11, a case where the moving body receives the guidance M1 for changing the lane to the right lane at the current position PL1 on the lane L2 is illustrated. After that, when the moving body continues to travel on the lane L2 without changing lanes and travels to the current position PL2 on the lane L2, the traveling lane L2 acquired in the previous step S12 and the traveling lane L2 acquired in the current step S12 are acquired. Since it is the same as the traveling lane L2 and the guidance content M1 in the previous step S24 and the guidance content M2 in the current step S24 are the same, the guidance unit 111 is the guidance M2 for changing lanes. To cancel. On the other hand, in the example of FIG. 11, when the moving body changes lanes from lane L2 to lane L3 and travels to the current position PL3 on lane L3, the traveling lane L2 acquired in the previous step S12 and this time Since the traveling lane L3 acquired in step S12 is different, the guidance unit 111 implements the lane change guidance M3.

The guide unit 111 may release the guide stop condition c2 on condition that the moving body has traveled by LC for a predetermined distance from the previous implementation point of the guide M1. The distance LC is preset and stored in the storage unit 120. The distance LC may be configured so that the setting can be changed by the user. In the example of FIG. 11, at the current position PL4 which is advanced by a distance LC or more from the current position PL1 where the guide M1 is made, the guide unit 111 implements the guide M4 having the same contents as the guide M1.

Even if the moving body continues to travel on the lane L2 without changing lanes or stays on the lane L2, the road condition changes with the passage of time, for example, as shown in FIG. Is also assumed. FIG. 12A illustrates the degree of congestion and guidance content M1 of each lane at time t1, and FIG. 12B illustrates the degree of congestion and guidance content M1'of each lane at time t2. When the degree of congestion in each lane changes in this way, there is a difference between the guidance content M1 at time t1 and the guidance content M1'at time t2. Therefore, the guidance stop condition c2 “the guidance contents are the same” is not satisfied, and the guidance unit 111 executes the guidance M1 ′.

When the guidance stop condition c2 is satisfied (step S22: NO), the guidance unit 111 shifts the process to step S10 and repeats the processes of steps S10 to S16. In this way, when the traveling lane when the guidance for changing lanes was last performed and the latest traveling lane are the same, and the content of the guidance for changing lanes is the same, the guidance unit 111 cancels the guidance. When the condition c2 is satisfied), the guidance for changing lanes is stopped. Therefore, the annoyance felt by the user can be reduced by repeatedly guiding the same content while the user of the information processing device 10 is continuously traveling in the same lane. ..

The guidance cancellation condition c3 is a case where the elapsed time from the previous guidance for changing lanes (FIG. 4, step S24) is within the third hour. It is assumed that the third time is preset and stored in the storage unit 120, and is 30 seconds in the present embodiment. The third time may be configured so that the setting can be changed by the user.

When the guidance stop condition c3 is satisfied (step S22: NO), the guidance unit 111 shifts the process to step S10 and repeats the processes of steps S10 to S16. In this way, the guidance unit 111 cancels the lane change guidance when the elapsed time from the previous lane change guidance is within the predetermined third hour (when the guidance cancellation condition c3 is satisfied). By being frequently informed of lane changes, it is possible to reduce the annoyance felt by the user.

If none of the guidance stop conditions c1, c2, and c3 are satisfied (step S22: YES), the guidance unit 111 guides the lane change in step S24. In the present embodiment, the guidance unit 111 guides the lane change by outputting a sound prompting the lane change from the input / output unit 150 (for example, a speaker). For example, the voice can be "Please drive in the right lane" when prompting to change to the right lane, and "Please drive in the left lane" when prompting to change to the left lane. The content of the voice output such as the utterance pattern may be configured so that the setting can be changed by the user. Further, the guide unit 111 may draw the lane change direction on the map with respect to the input / output unit 150 (for example, the touch panel) instead of / or the audio output. At this time, the guide unit 111 may draw a symbol representing the current position of the moving body on the map in addition to drawing the lane change direction.

After performing the lane change guidance (step S24), the guidance unit 111 shifts the process to step S10 and repeats the above-described process. As a result, the guide unit 111 obtains the latest shortest lane by using the latest current position (step S10), the traveling lane (step S12), and the lane information (step S12) accompanying the traveling of the moving body. (Step S16), guidance for changing lanes is carried out sequentially (step S24). Therefore, the guide unit 111 can further improve the convenience for the user.

According to the above-described embodiment, the lane information acquisition unit 170 of the information processing device 10 acquires the degree of congestion (lane information, information a2) for each lane on the road on which the moving body on which the information processing device 10 is mounted travels. (FIG. 4, step S12), the guide unit 111 finds the shortest lane, which is a lane that can be reached in a short time as compared with other lanes, from the current position PL of the moving body to the point P ahead in the traveling direction (FIG. 4, step S12). In FIG. 4, step S16), when the obtained shortest lane and the traveling lane in which the moving body travels are different (FIG. 4, step S18: YES), the lane change to the shortest lane is guided (FIG. 4, step S24). , FIG. 8: Guide M). Therefore, according to the information processing device 10, it is possible to guide the user to change lanes in consideration of the degree of congestion for each lane.

As described above, the lane information is provided to the lane information acquisition unit 170 based on the current position determined by, for example, GPS or QZSS. Due to the variation in the positioning of the current position, the lane information acquisition unit 170 may be provided with lane information (information a1) such that the moving body frequently moves back and forth between the two lanes. Such a phenomenon is particularly remarkable when the moving body is traveling near the boundary between the two lanes. According to the information processing device 10 of the above-described embodiment, the guide unit 111 uses the traveling lane when there is no change in the traveling lane of the moving body for the first hour or more (FIG. 4, step S14: YES). The shortest lane (the lane that can be reached from the current position to the point ahead in the traveling direction in a shorter time than other lanes) is obtained (FIG. 4, step S16). Therefore, according to the information processing device 10, it is possible to reduce the influence of the variation in the positioning of the current position on the shortest lane.

Further, the guidance unit 111 of the information processing device 10 guides the lane change when the travel time when the shortest lane is used is not shortened by a predetermined second time or more as compared with the travel time when the traveling lane is used. (FIG. 4, step S20: NO). Therefore, it is possible to suppress the guidance for changing lanes, which has a small effect of shortening the travel time, and it is possible to reduce the annoyance felt by the user due to the frequent guidance for changing lanes.

B. Modification example:
In the above embodiment, a part of the configuration realized by the hardware may be replaced with software, and conversely, a part of the configuration realized by the software may be replaced with the hardware. good. In addition, the following modifications are possible.

-Modification example 1:
In the above embodiment, an example of the configuration of the information processing device is shown. However, any aspect of the configuration of the information processing device can be adopted. For example, the information processing device may sequentially acquire the moving costs that are prepared in advance in the storage unit from, for example, a server on the Internet. For example, as the information processing device, in addition to the smartphone illustrated in FIG. 1, various devices such as a personal computer, a dedicated navigation device, a game machine, and a wearable device can be adopted.

-Modification example 2:
In the above embodiment, the lane guidance process (FIG. 4) has been described with an example of the process procedure. However, these processing procedures can be changed in various ways, and the processing contents in each step may be added, omitted, or changed, or the execution order of each step may be changed.

For example, step S14 for determining that there is no change in the traveling lane for the first hour or longer may be omitted. For example, step S20 for determining whether or not the travel time is shortened by the second hour or more may be omitted. Even if these steps S14 and S20 are omitted, the guide unit can guide the user to change lanes in consideration of the degree of congestion for each lane.

For example, when the lane guidance process and the route guidance process are performed in parallel, in step S16 of the lane guidance process, the point P for calculating the shortest lane is set as a destination or a waypoint in the route guidance process. May be good. In this way, the guide unit can calculate and guide the lane in which the destination can be reached in the shortest time as compared with other lanes as the shortest lane.

For example, in step S16, the travel time x required to change the lane from the traveling lane to the lane Ln in the calculation formula 1 of the shortest lane may be omitted. In this case, the movement cost in the storage unit is unnecessary. When the travel time x is omitted, the accuracy of the travel time in each lane is lowered, and the calculation load of the information processing device can be reduced. Further, as the travel time x, a predetermined predetermined value (for example, 10 seconds in the case of an adjacent lane, 30 seconds in the case of another non-adjacent lane, etc.) may be uniformly used. Even in this way, the guidance unit can guide the user to change lanes in consideration of the degree of congestion for each lane.

For example, in step S16, as a method for calculating the shortest lane when there is a portion where the degree of congestion is unknown, a method other than the method described with reference to FIGS. 6 and 7 can be adopted. For example, the shortest lane may be calculated by using predetermined predetermined values (for example, congestion degree C, travel time 180 seconds, etc.) in an area where the degree of congestion is unknown. For example, in a region where the degree of congestion is unknown, the degree of congestion may be estimated by image analysis of an image taken in front of the moving body, and the shortest lane may be calculated using the estimated value. Even in this way, the guidance unit can guide the user to change lanes in consideration of the degree of congestion for each lane.

For example, step S22 for determining whether or not the guidance cancellation condition is satisfied may be omitted. Further, in step S22, at least a part of the guidance stop conditions c1, c2, and c3 may be omitted. In addition, other discontinuation conditions not described above may be adopted. Even if step S22 is omitted, the guidance unit can guide the user to change lanes in consideration of the degree of congestion for each lane.

-Modification example 3:
The present invention is not limited to the above-described embodiments, examples, and modifications, and can be realized with various configurations within a range not deviating from the gist thereof. For example, the technical features in the embodiments, examples, and modifications corresponding to the technical features in each embodiment described in the column of the outline of the invention may be used to solve some or all of the above-mentioned problems. , It is possible to replace or combine as appropriate to achieve some or all of the above effects. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

10 ... Information processing device 110 ... CPU
111 ... Guidance unit 120 ... Storage unit 121 ... Movement cost 130 ... Communication unit 140 ... ROM / RAM
150 ... Input / output unit 160 ... Current position information acquisition unit 170 ... Lane information acquisition unit

Claims (8)

It is an information processing device
The current position information acquisition unit that acquires the current position information representing the current position of the moving body on which the information processing device is mounted, and the current position information acquisition unit.
A lane information acquisition unit that acquires lane information including the traveling lane in which the moving body travels and the degree of congestion for each lane on the road on which the moving body travels.
The shortest lane, which is a lane that can be reached in a shorter time than other lanes, is obtained from the current position to a point ahead of the moving body in the traveling direction, and the obtained shortest lane and the traveling lane are different from each other. In some cases, a guide unit that guides the change of lane to the shortest lane,
With
The guide unit is the travel time from the current position to the point for each lane on the road on which the moving body travels, and is the travel time represented by the sum of the first travel time and the second travel time. Find each, and set the lane with the shortest travel time as the shortest lane.
The first travel time is a time required for changing lanes from the traveling lane, which is set according to the degree of congestion for each lane.
The second travel time is the time required to travel to the above point using the lane after the lane change.
When there is a portion where the degree of congestion is unknown in front of the moving body in the traveling direction, the guide unit sets the point for obtaining the shortest lane between the current position and the unknown portion. Information processing device. The information processing device according to claim 1.
The guide unit is an information processing device that obtains the shortest lane when there is no change in the traveling lane for a predetermined first hour or more. The information processing apparatus according to claim 1 or 2.
When the travel time to the point when using the shortest lane is not shortened by a predetermined second time or more as compared with the travel time to the point when using the traveling lane, the guide unit may use the guide unit. An information processing device that cancels the guidance for changing lanes. The information processing device according to any one of claims 1 to 3, and further
It is equipped with a route information acquisition unit that acquires route information that represents the route from the departure point to the destination.
The guide unit
In addition to the lane change guidance, route guidance using the route information is performed.
An information processing device that stops guidance for changing lanes when the distance between the right / left turn point based on the route information and the current position is equal to or less than a predetermined first distance. The information processing apparatus according to any one of claims 1 to 4.
The guide unit
Using the latest current position, the traveling lane, and the lane information as the moving body travels, the guidance for changing the lane is sequentially implemented.
If there is no change between the driving lane when the guidance for changing the lane was performed last time and the latest driving lane, and the content of the guidance for changing the lane is the same, the guidance for changing the lane is given. Information processing device to stop. The information processing device according to any one of claims 1 to 5.
The guide unit
Using the latest current position, the traveling lane, and the lane information as the moving body travels, the guidance for changing the lane is sequentially implemented.
An information processing device that stops the guidance for changing lanes when the elapsed time from the previous guidance for changing lanes is within a predetermined third hour. This is a method of guiding lane changes, and the information processing device
The process of acquiring the current position information representing the current position of the moving body on which the information processing device is mounted, and
A process of acquiring lane information including the traveling lane in which the moving body travels and the degree of congestion for each lane on the road on which the moving body travels.
A process of finding the shortest lane, which is a lane that can be reached in a shorter time than other lanes, from the current position to a point in front of the moving body in the traveling direction.
A process of guiding a lane change to the shortest lane when the obtained shortest lane and the traveling lane are different.
With
In the guiding step, for each lane on the road on which the moving body travels, the travel time from the current position to the point, which is represented by the sum of the first travel time and the second travel time. The lane with the shortest travel time is set as the shortest lane.
The first travel time is a time required for changing lanes from the traveling lane, which is set according to the degree of congestion for each lane.
The second travel time is the time required to travel to the above point using the lane after the lane change.
In the guiding step, when there is a portion where the degree of congestion is unknown in front of the moving body in the traveling direction, the point for obtaining the shortest lane is set between the current position and the unknown portion. ,Method. A computer program that can be used as an information processing device
The step of acquiring the current position information representing the current position of the moving body on which the information processing device is mounted, and
A step of acquiring lane information including the traveling lane in which the moving body travels and the degree of congestion for each lane on the road on which the moving body travels.
A step of finding the shortest lane, which is a lane that can be reached in a short time compared to other lanes, from the current position to a point ahead of the moving body in the traveling direction.
When the obtained shortest lane and the traveling lane are different, a step of guiding a lane change to the shortest lane and a step of guiding the change to the shortest lane.
To run,
In the guided step, for each lane on the road on which the moving body travels, the travel time from the current position to the point, which is represented by the sum of the first travel time and the second travel time. The lane with the shortest travel time is set as the shortest lane.
The first travel time is a time required for changing lanes from the traveling lane, which is set according to the degree of congestion for each lane.
The second travel time is the time required to travel to the above point using the lane after the lane change.
In the guiding step, when there is a portion where the degree of congestion is unknown in front of the moving body in the traveling direction, the point for obtaining the shortest lane is set between the current position and the unknown portion. , Computer program.

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