JP5387448B2 - Moving method specifying device, method and program - Google Patents

Description

  The present invention relates to a technique for specifying a movement method.

  As a conventional technique, a moving path matching the shape and position indicated by the movement trajectory of the mobile terminal is specified by referring to map information, and based on the type of the specified moving path (roadway, walking path, track, etc.) A technique for specifying a moving method has been proposed (see Patent Documents 1 and 2).

JP 2005-56002 A Japanese Patent Application Laid-Open No. 10-232992

However, in Patent Documents 1 and 2, there is a problem that map information must be referred to in order to specify a movement path that matches the shape and position indicated by the movement locus of the mobile terminal. That is, there is a problem that the mobile terminal must be provided with a storage medium capable of storing map information or access to the server storing the map information every time the moving method is specified.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a technique capable of specifying that movement has been performed by a movement method without referring to map information.

  In order to achieve the above object, the movement method specifying device of the present invention includes a position detection unit, and the movement track acquisition means acquires the movement track of the position detection unit. The index amount acquisition means acquires an index amount indicating the shape of the movement trajectory. The range acquisition unit acquires a range of the index amount associated with the movement method. Then, the movement method specifying means sets at least that the index amount belongs to the range associated with the movement method as a condition for specifying that the movement has been performed by the movement method corresponding to the range.

  In such a configuration, the fact that the index amount indicating the shape of the movement trajectory belongs to the range corresponding to the movement method is a condition for specifying that movement has been performed by the movement method, and therefore, without referring to the map information It is possible to specify that the movement has been performed by the movement method. Therefore, the movement method specifying device does not have to store the map information or access the server storing the map information. In addition, even if there are two or more movement methods that can travel on the same movement path such as a bus or taxi, if the shape of the movement trajectory differs depending on the movement method, the movement was performed for each movement method. Can be specified. The range associated with the movement method means a range that can be taken by the index amount in the corresponding movement method. This range may be defined by the upper limit value and the lower limit value, or may be defined by either the upper limit value or the lower limit value.

  The movement method identification means may be a condition for identifying that movement has been performed by the movement method that at least the index amount indicating the shape of the movement locus belongs to the range corresponding to the movement method. Another condition may be imposed as a condition for specifying that has been performed. For example, when the index amount indicating the shape of the movement trajectory belongs to the range corresponding to the movement method, and other indexes other than the index amount indicating the shape of the movement trajectory satisfy a predetermined condition, the movement amount is moved by the movement method. You may make it identify that it was performed. For example, the movement method specifying means specifies that the movement is performed by the movement method when the index amount indicating the shape of the movement locus belongs to the range corresponding to the movement method and the movement speed satisfies a predetermined condition. You may make it do. Of course, to acquire a plurality of types of index amounts indicating the shape of the movement trajectory, and to identify that all of the plurality of types of index amounts belong to a range corresponding to the movement method, as a result of movement by the movement method. It is good also as conditions.

  The index amount indicating the shape of the movement trajectory may be any value whose value is characterized by the movement method. For example, an index amount suitable for specifying that movement has been performed by a movement method that moves only in the horizontal direction indicates the shape of the movement locus in the horizontal direction. On the other hand, in order to specify that the movement has been performed by the movement method that also moves in the vertical direction, an index amount indicating the shape of the movement locus in the vertical direction can also be employed. As the index amount indicating the shape of the movement trajectory, those indicating the direction or angle of all or a part of the movement trajectory, the amount of variation or variation thereof, and the like can be adopted.

  As a suitable example of the index amount indicating the shape of the movement trajectory, there is an index amount indicating the radius of curvature of the movement trajectory. In this case, the range corresponding to the moving method has the minimum value of the radius of curvature of the turning trajectory when the moving method is used as the lower limit value. In the case of a moving method for getting on a vehicle, the minimum turning radius at which the vehicle can turn depends on the turning performance of the vehicle. Accordingly, when the index amount indicating the curvature radius does not belong to the range having the minimum turning radius as the lower limit value, that is, when the turning is performed with the curvature radius smaller than the minimum turning radius, the vehicle corresponding to the range is ridden. It can be specified that it is not.

  Further, the movement method specifying means may specify that movement has been performed for each of the plurality of movement methods. If the range is different for each of the plurality of movement methods, there is a situation in which the index amount indicating the shape of the movement trajectory belongs to a range corresponding to a certain movement method, but the index amount does not belong to a range corresponding to another movement method. Arise. Further, when the index amount belongs only to the range corresponding to the single movement method, only the single movement method satisfies the condition for specifying that the movement has been performed, and the single movement method It can be determined that movement has been performed. Note that different ranges for each of the plurality of movement methods may have overlapping areas. When the index amount belongs to the overlapping area, each of the plurality of moving methods having the overlapping area in the range satisfies the condition for specifying that the movement has been performed. In this case, the movement method that performed the movement cannot be uniquely specified. In view of such a situation, a configuration may be adopted in which the moving method that performed the movement is uniquely specified based on a viewpoint different from the shape of the movement trajectory.

  The following example is given as a configuration that uniquely identifies the movement method that has moved based on a viewpoint different from the shape of the movement locus. That is, since the movement method is specified as the first vehicle, the index amount does not belong to the range corresponding to the first vehicle, and belongs to both the range corresponding to the second vehicle and the range corresponding to walking. When it becomes a state, it is specified that the moving method is a walk from the first vehicle. A condition for specifying that both the second vehicle and the walking are moving methods when the state belongs to both the range corresponding to the second vehicle and the range corresponding to walking. In this case, based on another viewpoint, it is specified that the moving method for moving is walking. Another viewpoint in this case is as follows. That is, when changing a vehicle, it is considered that the user gets on the second vehicle by walking after getting off the first vehicle. Therefore, even when the conditions for specifying that both the second vehicle and the walking are moving methods are satisfied, if it can be determined that the first vehicle has got off, the moving method Can be identified as walking from the first vehicle.

  When the movement method identification means identifies the movement method, it is desirable that the movement means perform an operation corresponding to the identified movement method. For example, the operation means may perform traffic guidance (route guidance, transfer guidance, timetable guidance) corresponding to the moving method. Further, whether or not the voice output by the movement method specifying device can be switched may be switched depending on whether or not the movement method is public transportation.

  Furthermore, the method of specifying the movement method as in the present invention can also be applied as a program or method. In addition, the above-described device, program, and method may be realized as a single device or may be realized by using components shared with each part of the vehicle, and include various aspects. It is a waste. For example, it is possible to provide a navigation device, a method, and a program that include the above devices. Further, some changes may be made as appropriate, such as a part of software and a part of hardware. Furthermore, the invention is also established as a recording medium for a program for controlling the apparatus. Of course, the software recording medium may be a magnetic recording medium, a magneto-optical recording medium, or any recording medium to be developed in the future.

It is a block diagram of a navigation system. It is a graph explaining index amount. It is a schematic diagram explaining the range of the parameter | index amount corresponding to a moving method. It is a flowchart which shows a traffic guidance process.

Here, embodiments of the present invention will be described in the following order.
(1) Configuration of navigation system:
(2) Traffic guidance processing:
(3) Other embodiments:

(1) Configuration of navigation system:
FIG. 1 is a block diagram showing a configuration of a navigation system 1 according to one embodiment of the present invention. The navigation system 1 includes a mobile terminal 10 as a movement method specifying device and a server 20.
The mobile terminal 10 includes a control unit 11 including a CPU, RAM, ROM, and the like, and a recording medium 12, and the control unit 11 executes a program stored in the recording medium 12 and the ROM. The navigation program 100 is executed as one of the programs. The navigation program 100 is a program that causes the control unit 11 to realize a function of performing traffic guidance according to a moving method.

  The mobile terminal 10 includes a GPS receiving unit 13, a user I / F unit 14, and a communication unit 15. The GPS receiving unit 13 as a position detecting unit receives radio waves from GPS satellites and outputs a signal for calculating the current position of the mobile terminal 10 to the control unit 11 via an interface (not shown). The control unit 11 specifies the current position of the mobile terminal 10 in the horizontal direction and the vertical direction based on the output signal of the GPS receiving unit 13. The control unit 11 specifies the current position of the mobile terminal 10 in the horizontal direction by longitude and latitude, and specifies the current position of the mobile terminal 10 in the vertical direction by sea level.

  The user I / F unit 14 is an interface unit for providing various types of information to the user or inputting user instructions, and includes a display, a speaker, an input button, and the like (not shown). The control unit 11 outputs a control signal to the user I / F unit 14 to display an image for traffic guidance on the display, and outputs sound for traffic guidance from a speaker. In addition, the control unit 11 receives a user instruction based on the output signal of the user I / F unit 14. The communication unit 15 includes a circuit connected to a mobile phone communication network, and enables communication between the server 20 and the control unit 11 connected to the mobile phone communication network. The control unit 11 acquires the guide information 12 c via the communication unit 15.

  The navigation program 100 includes a movement trajectory acquisition unit 110, an index amount acquisition unit 120, a speed acquisition unit 130, a range acquisition unit 140, a movement method identification unit 150, and a navigation unit 160. The movement trajectory acquisition unit 110 is a program module for causing the control unit 11 to execute a function of acquiring the movement trajectory of the mobile terminal 10. That is, the control unit 11 acquires the output signal from the GPS receiving unit 13 in a time period by the function of the movement trajectory acquisition unit 110, and the longitude and latitude indicating the position of the mobile terminal 10 at each time based on the output signal. And the position data 12a storing these are stored in the recording medium 12. In the present embodiment, the position of the portable terminal 10 is acquired every sampling period of 2 seconds in the latest sampling period of 4 seconds, and the position is stored in the recording medium 12 as the position data 12a. According to the position data 12a, the movement locus of the mobile terminal 10 during the sampling period can be specified.

  The index amount acquisition unit 120 is a program module for executing a function of acquiring the turning radius R, the gradient absolute value T, and the gradient change rate A as the index amount indicating the shape of the movement trajectory. FIG. 2A is a graph illustrating the turning radius R, and FIG. 2B is a graph illustrating the gradient absolute value T and the gradient change rate A. As shown in FIG. 2A, when the position of the mobile terminal 10 in the sampling periods P1 and P2 is plotted on the coordinate plane of longitude and latitude by the function of the index amount acquisition unit 120, the control unit 11 passes through these positions. Calculate the arc curve. For example, the control part 11 calculates the intersection of the perpendicular bisectors of the line segment which connected the position where time adjoins as a center of a circular arc curve. Then, the control unit 11 acquires the distance between the center and one of the positions of the mobile terminal 10 plotted on the coordinate plane as the turning radius R indicating the curvature radius of the movement locus.

  The control unit 11 calculates the latest sampling cycle P2 in the sampling periods P1 and P2 and the gradients S1 and S2 in the immediately preceding sampling cycle P1 by the function of the index amount acquisition unit 120, respectively. The gradients S1 and S2 are obtained by subtracting the vertical displacements H2 and H2 obtained by subtracting the sea level at the first time from the sea level at the last time in each sampling period P1 and P2, and the position of the last time in each sampling period P1 and P2. It can be obtained by dividing by the horizontal distances L1, L2 from the position of the first time. The horizontal distances L1 and L2 may be the length of a line segment (straight line distance) connecting the position of the last time and the position of the first time in each of the sampling periods P1 and P2, or along the arc curve. It may be a distance. The control unit 11 acquires the absolute value of the gradient calculated for the latest sampling period P2 as the gradient absolute value T. The gradient absolute value T corresponds to an index amount indicating the vertical inclination of the movement trajectory of the mobile terminal 10. Furthermore, the control unit 11 calculates the absolute value of the gradient change amount ΔS obtained by subtracting the gradient S1 in the immediately preceding sampling cycle P1 from the gradient S2 for the most recent sampling cycle P2 as the horizontal distance L2 in the sampling cycle P2. The gradient change rate A is obtained by dividing. The gradient absolute value T corresponds to an index amount indicating the degree of change in the vertical inclination of the movement locus of the mobile terminal 10.

  The speed acquisition unit 130 is a program module for executing a function of acquiring the speed V at which the mobile terminal 10 has moved. That is, the control unit 11 calculates the horizontal distance L2 moved in the horizontal direction in the latest sampling period P2 based on the position data 12a stored in the recording medium 12 by the function of the speed acquisition unit 130, and the horizontal distance L2 is calculated. The speed V is obtained by dividing by the length of the sampling period P2 (2 seconds).

  The range acquisition unit 140 is a program module for executing a function of acquiring a turning radius range, a gradient absolute value range, a gradient change rate range, and a velocity range associated with each of a plurality of movement methods. That is, the control unit 11 refers to the range map 12c stored in the recording medium 12 by the function of the speed acquisition unit 130, and can thereby realize the turning radius R, the gradient absolute value T, and the gradient change rate A that can be realized by each moving method. And a turning radius range, a gradient absolute value range, a gradient change rate range, and a velocity range as a range of velocity V are acquired.

  3A to 3D are schematic diagrams showing the contents of the range map 12c. In the range map 12c of this embodiment, “walking”, “taxi”, “bus”, and “train” are defined as moving methods, and the turning radius range and the gradient absolute value range for each of these moving methods. The gradient change rate range and the speed range are associated with each other. In this embodiment, the turning radius range, the gradient absolute value range, the gradient change rate range, and the speed range are each defined by an upper limit value and a lower limit value, and the upper limit value and the lower limit value are defined in the range map 12c. The turning radius range, the gradient absolute value range, the gradient change rate range, and the speed range may be defined by an upper limit value and a lower limit value, respectively, or may be defined by any one of the upper limit value and the lower limit value.

As shown in FIG. 3A, the upper limit value of the turning radius range is infinite for all of “walking”, “taxi”, “bus”, and “train”. This is because it is possible to go straight by any of the moving methods, and an infinite turning radius R can be realized. On the other hand, the lower limit value of the turning radius range has a relationship of “walking” (R _L1 ) <“taxi” (R _L2 ) <“bus” (R _L3 ) <“train” (R _L4 ). In the case of “walking”, since the direction can be changed without advancing, the lower limit value R _L1 of the turning radius range for “walking” is zero. In the area where the turning radius R is larger than the lower limit value R _L4 of the turning radius range of the “train”, the turning radius ranges of “walking”, “taxi”, “bus” and “train” overlap. Yes.

As shown in FIG. 3B, the lower limit value of the gradient absolute value range is 0 for all of “walking”, “taxi”, “bus”, and “train”. This is because it is possible to move horizontally by any of the moving methods. On the other hand, the upper limit of the gradient absolute value range has a relationship of “walking” (T _U1 )> “taxi” (T _U2 ) = “bus” (T _U3 )> “train” (T _U4 ). As shown in FIG. 3C, the lower limit value of the gradient change rate range is 0 for “walk”, “taxi”, “bus”, and “train”. This is because it is possible to continuously move horizontally regardless of the movement method. On the other hand, the upper limit of the gradient change rate range has a relationship of “walking” (A _U1 )> “taxi” (A _U2 ) = “bus” (A _U3 )> “train” (A _U4 ). According to “walking”, the stairs and the like can also be moved up and down, so the gradient absolute value range and the gradient change rate range upper limit values T _U1 and A _U1 for “walking” are the largest. On the other hand, the upper limit values T _U4 and A _U4 of the gradient absolute value range and gradient change rate range for the “train” traveling only on the track are the smallest. For areas where the absolute value of the gradient T and the gradient change rate A are smaller than the lower limit values U _U4 and A _U4 of the gradient absolute value range and gradient change rate range of the “train”, “walk” and “taxi” The gradient absolute value range and gradient change rate range of "bus" and "train" overlap.

As shown in FIG. 3D, the lower limit value of the speed range is 0 for all of “walking”, “taxi”, “bus”, and “train”. This is because stopping can be performed by any of the moving methods. On the other hand, the upper limit value of the speed range is “walk” (V _U1 ) <“taxi” (V _U2 ) = “bus” (V _U3 ) <“train” (V _U4 ). In addition, the speed range of “walking”, “taxi”, “bus”, and “train” overlaps for the speed range of “walking” and the region where the value of the speed V is smaller than the lower limit value V _U1 .

  When the turning radius R, the gradient absolute value T, the gradient change rate A, and the speed V belong to the turning radius range, the gradient absolute value range, the gradient change rate range, and the speed range, respectively, the moving method specifying unit 150 uses the corresponding moving method. It is a program module for executing a function that specifies that movement has been performed. In the present embodiment, the control unit 11 uses the function of the movement method specifying unit 150 to move the mobile terminal 10 (the user carrying the mobile terminal 10) from among a plurality of movement methods defined in the range map 12c. Identify the method. In order to be specified as the movement method that performed the movement, the turning radius R, the gradient absolute value T, the gradient change rate A, and the speed V are determined by the turning radius range, the gradient absolute value range, and the gradient change corresponding to each moving method. It is at a minimum required to belong to the rate range and speed range. Hereinafter, specific functions of the movement method specifying unit 150 will be described.

  With the function of the movement method specifying unit 150, the control unit 11 excludes a moving method in which the turning radius R does not belong to the turning radius range from candidates for specifying that the movement is performed by the moving method. In other words, the control unit 11 excludes a moving method in which the turning radius R does not belong to the turning radius range from the candidates because it does not satisfy the first condition for specifying that the movement is performed by the moving method. Similarly, by the function of the movement method specifying unit 150, the control unit 11 excludes a movement method in which the gradient absolute value T does not belong to the gradient absolute value range from candidates for specifying that the movement is performed by the movement method. That is, the control unit 11 excludes the moving method in which the gradient absolute value T does not belong to the gradient absolute value range from the candidates because the second condition for specifying that the moving is performed by the moving method does not satisfy the second condition. Further, the control unit 11 uses the function of the movement method specifying unit 150 to exclude a movement method in which the gradient change rate A does not belong to the gradient change rate range from candidates for specifying that the movement is performed by the movement method. That is, the control unit 11 excludes the moving method in which the gradient change rate A does not belong to the gradient change rate range, from the candidates because it does not satisfy the third condition for specifying that the movement is performed by the moving method. Furthermore, the control unit 11 excludes, from the candidates for specifying that the movement has been performed by the movement method, for the movement method in which the speed V does not belong to the speed range by the function of the movement method specifying unit 150. That is, the control unit 11 excludes a moving method in which the speed V does not belong to the speed range as a candidate because it does not satisfy the fourth condition for specifying that the movement is performed by the moving method. And the control part 11 is the 1st-4th conditions for specifying the movement method which was not excluded based on the turning radius R, the gradient absolute value T, the gradient change rate A, and the speed V, ie, the movement was performed. If there is a single movement method that satisfies all of the above, it is specified that the movement in the latest sampling period P2 has been performed by the single movement method. In the case where a plurality of movement methods remain as candidates without being excluded, in principle, the movement method cannot be uniquely specified.

  As an exception, the control unit 11 uses the function of the movement method specifying unit 150 to indicate that the last specified movement method is “train”, “bus”, or “taxi” (hereinafter referred to as “first vehicle”). )), The “first vehicle” is excluded from the candidates, and the “train”, “bus” and “taxi” are different from the “first vehicle” (hereinafter referred to as “second vehicle”). When at least one of “the vehicle” and “walk” is not excluded from the candidates for the movement method, it is specified that the movement method has changed from “the first vehicle” to “walk”. For example, when only “Train” is excluded from the candidates, “Taxi”, “Bus” and “Walk” will remain as candidates for moving, but the last specified moving method is “Train ", The movement method in the latest sampling period P2 is specified as" walking ". It is impossible to transfer directly from the train to a taxi or bus, and it is unlikely that the movement method immediately after the “train” will be “walk” or “taxi” or “bus”. Therefore, even when “taxi” and “bus” remain as candidates, the control unit 11 specifies that the travel method has changed from “train” to “walk” when “walk” is not excluded. To do.

  As described above, in the present embodiment, the control unit 11 specifies that the movement is performed by the movement method on the condition that the index amount indicating the shape of the movement locus belongs to the range corresponding to the movement method. A configuration that refers to information is not required. Therefore, it is not necessary to store map information or access a server storing map information. In addition, since the turning radius R in the movement trajectory is different between “bus” and “taxi” that can travel on the same movement route, whether the moving method of movement is “bus” or “taxi” Can be specified. In the case of a movement method such as “bus” and “taxi”, the minimum turning radius that can be turned differs depending on the turning performance of the vehicle, so the turning radius R is within the range having the minimum turning radius as the lower limit. When the vehicle does not belong to the vehicle, that is, when the vehicle turns with a turning radius R smaller than the minimum turning radius, it can be specified that the vehicle does not get on the vehicle corresponding to the range.

  The navigation unit 160 is a program module for executing a function of performing traffic guidance according to the specified movement method via the user I / F unit 14. That is, by the function of the navigation unit 160, the control unit 11 determines whether or not the specified movement method has changed, and when there is a change, performs an operation of switching to the guidance mode corresponding to the changed movement method. For example, when the movement method changes from “train” to “walk”, the guidance mode is switched from the transfer guidance mode to the walking navigation mode. Moreover, the control part 11 requests | requires the guidance information 12c corresponding to a moving method from the server 20 by the function of the navigation part 160. FIG. With the function of the navigation unit 160, the control unit 11 causes the user I / F unit 14 to output traffic guidance based on the guidance information 12 c acquired from the server 20. For example, in the transfer guidance mode, timetables and transfer information are acquired as the guide information 12c, and in the walking navigation mode, map information around the current position is acquired as the guide information 12c.

  The server 20 includes a control unit 21 including a CPU, a RAM, a ROM, and the like, and a recording medium 22. The control unit 21 executes a program stored in the recording medium 22 and the ROM. As one of the programs, the traffic guide information distribution program 200 is executed. The traffic guide information distribution program 200 is a program that causes the control unit 11 to realize a function of generating guide information 12c corresponding to the movement method specified in the mobile terminal 10 and transmitting the guide information 12c to the mobile terminal 10.

(2) Traffic guidance processing:
FIG. 4 is a flowchart of the traffic guidance process. As shown in FIG. 4, the traffic guidance process is a loop process that is repeatedly executed every sampling period. In step S <b> 100, the control unit 11 acquires the turning radius R, the gradient absolute value T, the gradient change rate A, and the speed V by using the functions of the movement trajectory acquisition unit 110, the index amount acquisition unit 120, and the speed acquisition unit 130. That is, the control unit 11 acquires the turning radius R, the gradient absolute value T, the gradient change rate A, and the speed V based on the movement locus in consideration of the position of the mobile terminal 10 in the latest sampling period P2.

In step S105, the control unit 11 acquires the turning radius range by the function of the range acquisition unit 140 and determines whether the turning radius R belongs to the turning radius range of each moving method by the function of the movement method specifying unit 150. To do. That is, by the function of the movement method specifying unit 150, the control unit 11 compares the turning radius R with the lower limit values R _{L1 to} R _L4 of the turning radius range of each moving method, and the turning radius is lower than the lower limit values R _{L1 to} R _L4. It is determined whether or not R is small. In step S110, the control unit 11 excludes the moving method corresponding to the turning radius range in which the turning radius R is smaller than the lower limit values R _{L1 to} R _L4 from the candidates by the function of the moving method specifying unit 150. For example, when the turning radius R is R <R _L4 , the control unit 11 excludes “train” from candidates for specifying the movement method. On the other hand, “walking”, “bus”, and “taxi” that are not excluded satisfy the first condition for specifying that the moving method has moved in the latest sampling period P2.

In step S115, the control unit 11 acquires the gradient absolute value range by the function of the range acquisition unit 140, and the control unit 11 sets the gradient absolute value T to the gradient absolute value range of each movement method by the function of the movement method specifying unit 150. It is determined whether or not it belongs. That is, by the function of the movement method specifying unit 150, the control unit 11 compares the gradient absolute value T with the upper limit values T _{U1 to} T _U4 of the gradient absolute value range of each movement method, and more than the upper limit values T _{U1 to} T _U4. It is determined whether or not the gradient absolute value T is large. In step S120, the control unit 11 excludes a moving method corresponding to a gradient absolute value range having a gradient absolute value T larger than the upper limit values T _{U1 to} T _U4 from the candidates by the function of the movement method specifying unit 150. For example, in the case where the gradient absolute value T is T _U4 <T <T _U2 = T _U3 , the control unit 11 excludes “train” from candidates to be identified as the movement method. On the other hand, “walking”, “bus”, and “taxi” that are not excluded satisfy the second condition for specifying that the moving method has moved in the latest sampling period P2.

In step S125, the control unit 11 acquires the gradient change rate range by the function of the range acquisition unit 140, and the control unit 11 sets the gradient change rate A to the gradient change rate range of each movement method by the function of the movement method specifying unit 150. It is determined whether or not it belongs. That is, by the function of the movement method specifying unit 150, the control unit 11 compares the gradient change rate A with the upper limit values A _{U1 to} A _U4 of the gradient change rate range of each movement method, and more than the upper limit values A _{U1 to} A _U4. It is determined whether or not the gradient change rate A is large. In step S130, by the function of the movement method specifying unit 150, the control unit 11 excludes a movement method corresponding to a gradient change rate range in which the gradient change rate A is larger than the upper limit values A _{U1 to} A _U4 from candidates. For example, when the gradient change rate A is A _U2 = A _U3 <A <A _U1 , the control unit 11 excludes “train”, “bus”, and “taxi” from candidates for specifying the movement method. On the other hand, the “walk” that is not excluded satisfies the third condition for specifying that the movement method is the movement method performed in the latest sampling period P2.

In step S135, the control unit 11 acquires the speed range by the function of the range acquisition unit 140, and the control unit 11 determines whether the speed V belongs to the speed range of each movement method by the function of the movement method specifying unit 150. To do. That is, the control unit 11 compares the speed V with the upper limit values V _{U1 to} V _U4 of the speed range of each moving method by the function of the movement method specifying unit 150, and the speed V is larger than the upper limit values V _{U1 to} V _U4. It is determined whether or not. In step S140, the control unit 11 excludes a moving method corresponding to a speed range in which the speed V is higher than the upper limit values V _{U1 to} V _U4 from the candidates by the function of the moving method specifying unit 150. For example, when the speed V is V _U1 <V, the control unit 11 excludes “walking” from candidates for specifying the movement method. On the other hand, the “bus”, “taxi”, and “train” that are not excluded satisfy the fourth condition for specifying that the movement method is the movement method performed in the latest sampling period P2.

  In step S145, the control unit 11 determines how many moving methods were not excluded in steps S110, S120, S130, and S140 by the function of the moving method specifying unit 150. If the number of movement methods not excluded is 0, the control unit 11 does not specify the movement method by the function of the movement method specifying unit 150 in step S150. If the number of movement methods not excluded is one, in step S155, the control unit 11 uses the function of the movement method specifying unit 150 to move in the latest sampling period P2 by the movement method not excluded. Identify that it was done. That is, when there is a single movement method that satisfies all of the first to fourth conditions sequentially specified in steps S110, S120, S130, and S140, it is specified that the movement is performed by the single movement method. .

  On the other hand, if the number of movement methods not excluded is two or more, the control unit 11 uses the function of the movement method specifying unit 150 to determine which vehicle is the last specified movement method in step S160. It is determined whether or not it is a moving method of getting on the vehicle, that is, whether it is the “first vehicle”. The traffic guidance process of the present embodiment is a loop process that is repeatedly executed for each sampling period, and a process for specifying a moving method is repeated for each sampling period. Therefore, the movement method specified last means a movement method specified in the sampling cycle closest to the present among the movement methods specified in the past. Note that since there is a sampling period in which the movement method is not specified in step S150, the movement method specified last is not necessarily related to the immediately preceding sampling period.

  Here, when the movement method specified last is not the “first vehicle”, the control unit 11 does not specify the movement method in step S150 due to the function of the movement method specification unit 150. If the last identified travel method is “first vehicle”, the control unit 11 includes “walk” as the travel method not excluded in step S165 by the function of the travel method identifying unit 150. It is determined whether or not. That is, it is determined whether or not “walking” and at least one “second vehicle” are included in two or more moving methods that are not excluded. If “walking” is not excluded from the candidates for the moving method, it is specified in step S170 that the moving method is “walking”. In this embodiment, the moving method is specified in steps S155 and S170, and the moving method is not specified in step S150.

  In step S175, the control unit 11 determines whether or not the specified movement method has changed by the function of the navigation unit 160. That is, the control unit 11 determines whether or not the movement method specified last is different from the movement method specified immediately before. If the movement method is not specified immediately before, it is specified that there is no change in the movement method. If there is a change in the identified movement method, in step S180, the control unit 11 switches the guidance mode by the function of the navigation unit 160. When the guidance mode is switched, the control unit 11 uses the function of the navigation unit 160, and the control unit 11 uses the function of the navigation unit 160 to request the server 20 for guidance information 12 c corresponding to the moving method, and the guidance returned by the server 20. The traffic guidance based on the information 12c is output via the user I / F unit 14.

  In step S185, the control unit 11 waits until the sampling period of 2 seconds elapses from the execution of step S100 by the functions of the movement trajectory acquisition unit 110, the index amount acquisition unit 120, and the speed acquisition unit 130, and after the sampling period has elapsed. Return to step S100. That is, the turning radius R, the gradient absolute value T, the gradient change rate A, and the velocity V are acquired based on the movement trajectory considering the latest position of the mobile terminal 10, and the turning radius R, the gradient absolute value T, and the gradient change rate are acquired. The process of specifying the movement method based on A and speed V is repeated.

(3) Other embodiments:
In the above embodiment, an example in which the movement method is “walking”, “train”, “bus”, or “taxi” has been described. However, in the present invention, at least a single movement method is performed. What is necessary is just to be able to identify that. Further, a movement method other than the movement method exemplified in the above embodiment, for example, “bicycle”, “airplane”, “elevator”, etc. may be specified.
In the embodiment, the position of the mobile terminal 10 is acquired based on the output signal from the GPS receiving unit 13. However, in order to acquire the position of the mobile terminal 10, the mobile terminal 10 has a speed sensor, an acceleration sensor, and an angle. An acceleration sensor may be provided.

  Further, the function executed by the mobile terminal 10 in accordance with the specified moving method is not limited to traffic guidance. For example, whether or not the mobile terminal 10 can output sound depending on whether the moving method is public transportation (manner mode). Switching). In addition, according to the present invention, a configuration for referring to map information is not essential, but as one aspect of the present invention, a method for specifying a moving method based on a moving path specified by referring to map information may be used in combination. Good. For example, when a plurality of movement methods remain without being excluded from candidates, if the configuration is such that the movement method is specified based on the movement path specified by referring to the map information on the server, the frequency of accessing the server can be increased. Can be reduced.

  DESCRIPTION OF SYMBOLS 1 ... Navigation system, 10 ... Portable terminal, 11 ... Control part, 11a ... Traffic guidance information, 12 ... Recording medium, 12c ... Range map, 13 ... GPS receiving part, 14 ... User I / F part, 15 ... Communication part, DESCRIPTION OF SYMBOLS 20 ... Server, 21 ... Control part, 22 ... Recording medium, 100 ... Navigation program, 110 ... Movement track acquisition part, 120 ... Index quantity acquisition part, 130 ... Speed acquisition part, 140 ... Range acquisition part, 150 ... Movement method specification Part, 160 ... navigation part, 200 ... traffic guide information distribution program, R ... turning radius, T ... gradient absolute value, A ... gradient change rate, V ... speed.

Claims (5)

A movement trajectory acquisition means for acquiring a movement trajectory of the position detector;
Index amount acquisition means for acquiring an index amount indicating the shape of the movement locus;
Range acquisition means for acquiring a range of the index amount associated with a movement method;
A movement method specifying means that uses at least the index amount to belong to the range as a condition for specifying that movement has been performed by the movement method corresponding to the range;
Equipped with a,
The range acquisition means acquires the different ranges for each of the plurality of movement methods including a first vehicle, a second vehicle, and walking,
The movement method specifying means specifies the movement method corresponding to the range to which the index amount belongs from a plurality of the movement methods, and from the state where the movement method is specified as the first vehicle, When the index amount does not belong to the range corresponding to the first vehicle and becomes in a state belonging to both the range corresponding to the second vehicle and the range corresponding to the walking, the moving method includes Identifies that you walked from the first vehicle,
Moving method identification device. The index amount indicates a radius of curvature of the movement locus,
The range has, as a lower limit value, a minimum value of the radius of curvature of the turning trajectory by the moving method.
The movement method specifying device according to claim 1 . An operation means for performing an operation corresponding to the movement method specified by the movement method specifying means;
The movement method specifying device according to claim 1 . A movement trajectory acquisition step in which the computer acquires the movement trajectory of the position detector;
An index amount acquisition step in which the computer acquires an index amount indicating the shape of the movement locus;
A range acquisition step in which the computer acquires a range of the index amount associated with a movement method;
A moving method specifying step in which the computer determines that at least the index amount belongs to the range, as a condition for specifying that movement has been performed by the moving method corresponding to the range;
Only including,
In the range acquisition step, the different ranges are acquired for each of the plurality of movement methods including the first vehicle, the second vehicle, and walking,
In the moving method specifying step, the moving method corresponding to the range to which the index amount belongs is specified from a plurality of moving methods, and the moving method is specified as the first vehicle. When the index amount does not belong to the range corresponding to the first vehicle and becomes in a state belonging to both the range corresponding to the second vehicle and the range corresponding to the walking, the moving method includes Identifies that you walked from the first vehicle,
Movement method identification method. A movement trajectory acquisition function for acquiring a movement trajectory of the position detector;
An index amount acquisition function for acquiring an index amount indicating the shape of the movement locus;
A range acquisition function for acquiring a range of the index amount associated with a movement method;
A movement method specifying function that sets at least that the index amount belongs to the range as a condition for specifying that movement has been performed by the movement method corresponding to the range;
To the computer ,
The range acquisition function allows the computer to acquire the different ranges for each of the plurality of movement methods including a first vehicle, a second vehicle, and walking,
The moving method specifying function allows the computer to specify the moving method corresponding to the range to which the index amount belongs from among the plurality of moving methods, and the moving method is specified as the first vehicle. The index amount does not belong to the range corresponding to the first vehicle, and the movement is performed when the index amount belongs to both the range corresponding to the second vehicle and the range corresponding to the walking. A method identifies that the first vehicle has been walked;
Moving method specific program.

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