JP2006349595A - Route guide system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation system capable of smoothly route-guiding a mobile station to a destination, without having to wait long for the mobile station until the control-object equipment installed on a moving route arrive at the destination. <P>SOLUTION: This navigation system 1 comprises a route search part searching, from position information for a current position of the mobile station 1 and the destination and electronic map information, the moving route from the current position to the destination; a moving route providing part, providing the moving route of the mobile station 11 with positional information for an elevator 171 or the like on the moving route to the mobile station 11; and a reference distance setting part for setting the determination reference distance for whether to make the elevator 171 or the like operate, based on the moving speed of the mobile station 11 and the time required for operation of the control object equipment. It is determined whether the distance between the mobile station 11 and the elevator 171 or the like is the reference distance or smaller; and when the distance is the reference value or smaller, the mobile station 11 transmits a control signal for controlling the elevator 171 or the like, to make the elevator 171 or the like operate. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a route guidance system that provides a travel route from a current location to a destination together with traffic lights, facilities, etc., such as a navigation system.

In recent years, the accuracy of satellite positioning systems (GPS: Global Positioning System) has been improved and the cost has been reduced, and navigation devices for vehicles and mobile phones have become widespread.
For example, by inputting the current location and destination, the route from the current location to the destination is searched, and the route from the current location to the destination is provided together with facility data such as stairs, footbridges, pedestrian crossings, escalators, elevators, etc. A navigation system has been proposed (for example, Patent Document 1).
JP 2002-286491 A (paragraphs 0009 and 0010)

  However, in the technique described in Patent Document 1, control of the operation time of devices such as elevators and traffic lights provided on the route from the current location to the destination is not considered, and for example, waiting for an elevator to come long , Waiting a long time for the traffic light to turn blue, and wasting wasted time.

  A route guidance system according to the present invention includes a map information storage unit that stores electronic map information, a control target device location information storage unit that stores location information of a control target device, and a location acquisition unit that acquires location information of a mobile station A route search unit that searches for a mobile station travel route from the current location to the destination from the location information of the mobile station acquired by the location acquisition unit, the location information of the destination input from the mobile station, and the electronic map information; A mobile route providing unit that provides a mobile station with a mobile route searched by the route search unit in association with the electronic map information together with the position information of the control target device installed on the mobile route, Based on the moving speed and the time required for the operation of the control target device installed on the movement route, a reference distance for determining whether to operate the control target device installed on the movement route is set. Reference distance A determination unit that determines whether the distance between the fixed unit and the mobile station and the control target device installed on the movement path is equal to or less than a reference distance, and the determination result of the determination unit is equal to or less than the reference distance The mobile station transmits a control signal for controlling a control target device installed on the movement path, and the control target device operates according to the control signal.

  With such a configuration, the operation of the control target device is controlled in consideration of the moving speed of the mobile station and the time required for the operation of the control target device installed on the movement path. It is possible to smoothly guide the route to the destination without waiting for a long time for the control target device installed on the moving route to operate until reaching the destination.

  According to the present invention, it is possible to smoothly guide a route from a mobile station to a destination without waiting for a long time for a device to be controlled installed on the movement route to operate until the mobile station reaches the destination.

A configuration of a navigation system according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a configuration of a navigation system according to Embodiment 1 of the present invention.
FIG. 2 is a diagram illustrating a configuration of the portable information terminal.
FIG. 3 is a diagram illustrating a configuration of the control server.
As shown in FIG. 1, a navigation system 1 as a route guidance system according to an embodiment of the present invention includes a portable information terminal 11, a radio base station 12, a control server 13, a map information database 14, and a facility location information database 15. The traffic signal control server 16, the traffic signals 161 to 163 for pedestrians, the elevator control server 17, the elevators 171 to 173, and the artificial satellite 18 are included.

As shown in FIG. 1, the portable information terminal 11 performs data wireless communication between the wireless base station 12 and the artificial satellite 18.
The control server 13 is connected to the radio base station 12, the map information database 14, the facility location information database 15, the traffic signal control server 16, and the elevator control server 17, and performs data communication with them.
A plurality of pedestrian traffic lights 161 to 163 are connected to the traffic signal control server 16. A plurality of elevators 171 to 173 are connected to the elevator control server 17.

As shown in FIG. 2, the mobile information terminal 11 as a mobile station includes an antenna 111, a radio unit 112, a position detection unit 113, a storage unit 114, an input unit 115, an output display unit 116, and a control unit 117. Has been. In addition, it is not limited to a portable information terminal, For example, a mobile telephone and a PHS (Personal Handyphone System) terminal are also contained in a mobile station.
The radio unit 112 is connected to the antenna 111 and the control unit 117. The radio unit 112 transmits and receives data to and from the radio base station 12 via the antenna 111 according to the control of the control unit 117.

  Further, in particular, a determination unit 135 of the control server 13 to be described later is configured such that the walking traffic signal 161 or the elevator 171 or the like provided on the moving route to the current location of the portable information terminal 11 and the destination of the portable information terminal 11. When the wireless unit 112 determines that the distance to the control target device is within a reference distance set by a reference distance setting unit 134, which will be described later, A control signal for controlling the elevator 171 and the like is transmitted to the traffic light control server 16 or the elevator control server 17 via the control server 13.

  The position acquisition unit 113 is connected to the control unit 117 and acquires the position information of the portable information terminal 11 according to the control of the control unit 117. Specifically, the position acquisition unit 113 includes a receiving unit (not shown) that receives a GPS signal transmitted from the artificial satellite 18, and the position information (for example, latitude) of the portable information terminal 11 from the received GPS signal. And longitude). The position acquisition unit 113 has a function of receiving a GPS signal, but instead of this, for example, EOTD (Enhanced Observed Time Difference) or TDOA (Time Difference of Arrival) may be used. A gyro device may be used.

Here, EOTD has a mechanism for specifying the position of the portable information terminal 11 using a ground antenna. The TDOA also has a mechanism for determining the position of the mobile information terminal 11 by measuring the time until the radio wave reaches a position measurement unit (not shown) inside the radio base station 12 of the mobile phone network. Have.
The storage unit 114 stores, for example, position information acquired by the position acquisition unit 113 and various types of data such as electronic map information transmitted from the control server 13 via the wireless base station 12 and a movement route. The storage unit 114 is connected to the control unit 117.

The input unit 115 is connected to the control unit 117 and includes, for example, a plurality of button switches arranged on the surface of the portable information terminal 11. The portable information terminal 11 can input a destination or a travel route search condition. It is used for signal input related to the operation.
Further, by using the input unit 115, it is possible to input a control signal for controlling controlled devices such as elevators 171 to 173 and traffic lights 161 to 163 installed on a moving route from the current location to the destination.
Although the input unit 115 is configured by a plurality of button switches, for example, a rotary switch, a touch pad, a voice input device, or the like may be used instead of the button switches. Furthermore, the input unit 115 may be configured by a combination of these plural types.

  When the control target device is an elevator, for example, when a route for moving from the first floor to the fifth floor of a building on the moving route is included, a control signal for moving the elevator room to the first floor is input. be able to. Furthermore, using the input unit 115, a control signal for moving the elevator room to the first floor can be input, and at the same time, a control signal for designating the floor to exit the elevator room can be input.

Further, when the control target device is a traffic light, for example, a control signal for switching to a blue signal can be input.
The list of each control signal can be acquired when the portable information terminal 11 is connected to the control server 13 by communication, for example. That is, when there is a connection request from the portable information terminal 11 to the control server 13 and the control server 13 permits connection in response to this connection request, the connection-source portable information terminal 11 transmits each control signal of each control target device. You can get a list. Note that the list of control signals may be stored in the storage unit 114 in advance.

The output display unit 116 is connected to the control unit 117 and is configured by, for example, a liquid crystal display device, and performs menu display and display of guidance information in response to operation input under the control of the control unit 117. In addition, the display unit 116 displays various information such as a moving route received from the control server 13 according to the control of the control unit 117.
Note that the output display unit 116 may use an LED, a CRT, or a plasma display instead of the liquid crystal display device. Further, in addition to the liquid crystal display device, an audio output speaker may be provided.

The control unit 117 is connected to the antenna 111, the radio unit 112, the position detection unit 113, the storage unit 114, the input unit 115, and the display unit 116, and controls these units to control the entire portable information terminal 11. .
The wireless base station 12 wirelessly communicates various data with the portable information terminal 11. Further, data communication between the portable information terminal 11 and the control server 13 is relayed.

As shown in FIG. 3, the control server 13 includes a communication unit 131, a movement route search unit 132, a movement route provision unit 133, a reference distance setting unit 134, a determination unit 135, and a control unit 136.
As shown in FIG. 1, the communication unit 131 is connected to the radio base station 12, the map information database 14, the facility location information database 15, the traffic signal control server 16, and the elevator control server 17. The communication unit 131 transmits and receives data to and from the radio base station 12, the map information database 14, the facility location information database 15, the traffic signal control server 16, and the elevator control server 17 in accordance with the control of the control unit 136. In addition, although the communication part 131 was illustrated as one in FIG. 3, you may provide two or more.

A movement route search unit 132 as a route search unit is connected to the control unit 136. The movement route search unit 132 is controlled by the control unit 136, the position information of the portable information terminal 11 acquired by the position acquisition unit 113 of the portable information terminal 11, the position information of the destination input from the portable information terminal 11, and the electronic From the map information, the travel route of the portable information terminal 11 from the current location to the destination is searched.
The position information of the portable information terminal 11 is received via the radio base station 12 when a request for providing a movement route is received by signal input from the input unit 115 of the portable information terminal 11.

Similarly, the location information of the destination is received via the radio base station 12 when a request for providing a moving route is received by signal input from the input unit 115 of the portable information terminal 11.
In addition, you may provide the input screen of each setting matter in the case of a movement path | route provision from the control server 13 with respect to the portable information terminal 11. FIG. In this case, the control server 13 receives the position information of the destination when input from the portable information terminal 11 according to each input screen.
The electronic map information is acquired from the map information database 14. Specifically, when the control server 13 receives a request for providing a travel route from the portable information terminal 11, the control unit 136 acquires electronic map information stored in the map information database 14 via the communication unit 131. To do.

The travel route providing unit 133 is connected to the control unit 136, and the travel route of the portable information terminal 11 searched by the travel route searching unit 132 according to the control of the control unit 136 is changed to an elevator 171 or the like installed on the travel route or a traffic light It is provided in association with the electronic map information together with the position information of the control target device such as 171.
Specifically, the movement route providing unit 133 displays image data obtained by superimposing the movement route from the current position to the destination on the electronic map including the current position and the destination of the portable information terminal 11 received from the portable information terminal 11. Generate.

In addition, the movement route providing unit 133 accesses the facility position information database 15 through the control unit 136 and the communication unit 131 according to the control of the control unit 136, and is installed on the movement route from the current location to the destination. The elevator 171 and the traffic light 171 are extracted, and the extracted information is further superimposed on an electronic map including the current location and the destination of the portable information terminal 11 to generate image data.
Then, the image data is transmitted to the portable information terminal 11 via the wireless unit 131 and the wireless base station 12 according to the control of the control unit 136, whereby the portable information terminal 11 from the current location to the destination is transmitted to the portable information terminal 11. Provides a route of travel.

The reference distance setting unit 134 is installed on the moving route based on the moving speed of the portable information terminal 11 and the time required for the operation of the control target devices such as the elevator 171 and the traffic light 171 installed on the moving route. A reference distance for determining whether or not to operate the elevator 171 and the traffic light 171 is set.
Specifically, the moving speed of the portable information terminal 11 (average walking speed of pedestrians) and the time required for the operation of the control target devices such as the elevator 171 and the pedestrian traffic light 171 installed on the moving path. The multiplication value is set as a reference distance. Here, the time required for the operation of the elevator 171 or the like refers to the time until an elevator room such as the operating elevator 171 or the like arrives at the boarding floor. In addition, the time required for the operation of the pedestrian traffic light 161 and the like refers to the time required for the pedestrian traffic light 161 and the like to switch to a green signal (lighted in blue). As described above, when the reference distance is set, when the portable information terminal 11 arrives at a control target device such as the elevator 171 or the traffic light 171 installed on the moving route, the control of the elevator 171 or the traffic light 171 or the like is performed. The target device is set to operate.

  The determination unit 135 determines the reference distance set by the reference distance setting unit 134 such that the distance between the current location of the portable information terminal 11 and the elevator 171 or the traffic light 171 installed on the moving route is controlled by the control unit 136. It is determined whether the following is true. The determination result is transmitted to the portable information terminal 11 by the communication unit 131 via the wireless base station 12. In the portable information terminal 11, the received determination result is temporarily stored in the storage unit 114.

Electronic map information is stored in the map information database 14 serving as a map information storage unit.
The facility position information database 15 serving as a control target device position information storage unit stores the position information of each facility and each control target device such as pedestrian traffic lights 161 to 163 and elevators 171 to 173. Specifically, the position of each facility and each control target device is specified by the latitude and longitude of each facility and each control target device.

As shown in FIG. 1, the traffic light control server 16 is connected to the control server 13. In addition, a plurality of pedestrian traffic lights 161 to 163 are connected to the traffic signal control server 160. The traffic light control server 16 controls each of the plurality of pedestrian traffic lights 161-163. In addition, a control signal for controlling the pedestrian traffic light 161 and the like provided on the movement route by the portable information terminal 11 (a signal for making the signal of the pedestrian traffic light (for example, 161) blue) is a control server. When the signal is input to the traffic light control server 16 via 13, the traffic light control server 16 controls the signal of the target pedestrian traffic light (for example, 161) to be blue.
In FIG. 1, only three pedestrian traffic lights are shown as an example, but three or less may be used.

As shown in FIG. 1, the elevator control server 17 is connected to the control server 13 in the same manner as the traffic light control server 16.
A plurality of elevators 171 to 173 are connected to the elevator control server 17. The elevator control server 17 controls each of the plurality of elevators 171 to 173.
Further, a control signal for controlling the elevator 171 and the like provided on the movement route (a signal for moving the elevator room of the elevator (for example, 171) to a specific floor on the movement route) is sent from the portable information terminal 11 to the control server. When input to the elevator control server 17 via 13, the elevator control server 17 controls the elevator room of the target elevator (for example, 171) to move to a specific floor on the moving route and wait.

Furthermore, when the floor from which the target elevator (for example, 171) is to be lowered is specified in the control signal from the portable information terminal 11, the elevator control server 17 indicates that the user of the portable information terminal 11 After getting into the elevator room, control is performed to move the elevator room of the target elevator (for example, 171) to the designated floor. At this time, the user of the portable information terminal 11 does not need to press the destination button in the elevator room.
Although only three elevators are shown in FIG. 1, three or less elevators may be used.

Next, the operation of the navigation system according to the embodiment of the present invention will be described with reference to the drawings.
FIG. 4 is a diagram showing an example of an operation flow of the navigation system according to the embodiment of the present invention.
It is assumed that the portable information terminal 11 is connected to the control server 13 via the wireless base station 12.

First, the user of the portable information terminal 11 inputs a destination using the input unit 115 (step (STEP (hereinafter simply referred to as S)) 401). At this time, the user inputs the destination according to the input screen provided on the output display unit 116.
Next, the position acquisition unit 113 of the portable information terminal 11 acquires the position of the portable information terminal 11, that is, the position information (latitude, longitude, etc.) of the portable information terminal 11 (S402). In addition, the portable information terminal 11 transmits the position information of the portable information terminal 11 and the position information of the destination to the control server 13 via the wireless base station 12 using the wireless unit 112 and the antenna 111.

Next, the control server 13 that has received the position information of the portable information terminal 11 and the position information of the destination acquires the electronic map information from the map information database 14, and then uses the movement route search unit 132 to perform the portable information terminal. The travel route of the portable information terminal 11 from the current location to the destination is searched from the location information 11, the location information of the destination, and the electronic map information. Then, it is set as an optimum movement route (S403).
Next, the control server 13 accesses the facility location information database 15 and extracts control target devices such as an elevator 171 and a traffic light 171 installed on a route (movement route) from the current location to the destination (S404). ).

  Further, the extracted positions of these control target devices are registered in the control server 13 as checkpoints (S405). Then, the travel route providing unit 133 controls the elevator 171 and the traffic lights 171 installed on the travel route from the current location to the destination on the electronic map including the current location and the destination of the portable information terminal 11. Image data to be displayed with the device as a checkpoint is generated. The control server 13 uses the communication unit 131 to transmit the generated image data (the current location and the destination of the portable information terminal 11 and the image data displaying each checkpoint on the electronic map) via the radio base station 12. It transmits to the portable information terminal 11.

On the portable information terminal 11 side, the content of the image data received from the control server 13 can be confirmed using the output display unit 116.
Next, the position acquisition unit 113 of the portable information terminal 11 again acquires the own position of the portable information terminal 11, that is, the position information (latitude, longitude, etc.) of the portable information terminal 11 (S407).
In addition, the portable information terminal 11 transmits the position information of the portable information terminal 11 and the position information of the destination to the control server 13 via the wireless base station 12 using the wireless unit 112 and the antenna 111.

  Next, the control server 13 uses the determination unit 135 to determine the distance between the current location of the portable information terminal 11 and the elevator 171 and the traffic lights 171 (check points) installed on the movement route as a reference distance setting unit. It is determined whether the distance is equal to or less than the reference distance set by 134 (S408). The determination result is transmitted to the portable information terminal 11 by the communication unit 131 via the wireless base station 12. In the portable information terminal 11, the received determination result is temporarily stored in the storage unit 114.

If the distance between the elevator 171 etc. and the traffic lights 171 etc. (check points) installed on the current location and the moving route of the portable information terminal 11 is not less than the reference distance set by the reference distance setting unit 134, The processes of S407 and S408 are repeated.
If the distance between the elevator 171 etc. and the traffic lights 171 etc. (check points) installed on the current location and movement route of the portable information terminal 11 is less than or equal to the reference distance set by the reference distance setting unit 134 The radio unit 112 of the terminal 11 sends an operation request signal to the check point, that is, a control signal for controlling the traffic light 161 and the elevator 171 provided on the moving route via the control server 13 to the traffic signal control server 16. Or it transmits to the elevator control server 17 (S409).

Then, the traffic light control server 16 or the elevator control server 17 operates the elevator 171 and the traffic light 171 installed on the movement route according to the control signal.
That is, for example, when the elevator 171 of the building on the moving route includes a route moving from the first floor to the fifth floor, and the control signal is processing content for moving the elevator room of the elevator 171 to the first floor, elevator control The server 17 instructs the elevator 171 to move the elevator room to the first floor, and actually moves the elevator room of the elevator 171 to the first floor.

Furthermore, when the floor from which the elevator is to be lowered is designated, for example, as the 5th floor together with the control signal for moving the elevator room to the first floor, the user of the portable information terminal 11 takes the elevator room of the elevator 171 after The destination button on the 5th floor is automatically set to a pressed state.
In addition, for example, when a path crossing an intersection where the traffic signal 161 for walking is provided on the moving path and the control signal is processing content for switching the traffic signal 161 for walking to a green signal, the traffic signal control server 16 The traffic signal 171 is instructed to switch to a green signal, and the pedestrian traffic signal 171 is switched to a green signal.

The reference distance is set by the reference distance setting unit 134 based on the moving speed of the portable information terminal 11 and the time required for the operation of the control target devices such as the elevator 171 and the traffic light 171 installed on the moving route. ing. That is, the reference distance is a multiplication value of the moving speed of the portable information terminal 11 (average walking speed of the pedestrian) and the time required for the operation of the elevator 171 and the traffic light 171 installed on the moving route.
For this reason, when the portable information terminal 11 arrives at a control target device such as an elevator 171 or a traffic light 171 installed on the movement route, the control target device operates.

  After the portable information terminal 11 transmits the control signal, the elevator 171 and the traffic lights 171 and the like (check points) installed on the movement route are deleted from the registration list in the control server 13 (S410). Then, the processes in S406 to S410 are repeated until each checkpoint is eliminated, and the process is terminated when all the checkpoints are eliminated from the checkpoint registration list.

  As described above, according to the present invention, the operation of the control target device is controlled in consideration of the moving speed of the mobile station and the time required for the operation of the control target device installed on the movement path. It is possible to provide smooth route guidance to the destination without waiting for a long time for the control target device installed on the movement route to operate until the mobile station arrives at the destination. In particular, the application of the present invention eliminates the need to move to an elevator call button or a traffic light signal switching button. Therefore, if the user of the portable information terminal 11 is blind or an elderly person or a child, It is effective.

  Further, when the movement route search unit 132 of the control server 13 sets the movement route, the position information of each control target device such as the pedestrian traffic light 161 and the elevator 171 is acquired from the facility position information database 15. And by acquiring the operation status of each control target device, each control target device can be set to operate efficiently when the portable information terminal 11 arrives at each control target device. Thus, by setting, it is possible to provide a moving route that leads from the current location to the destination in the shortest time.

In the navigation system 1 shown in FIGS. 1 and 2, the movement route search unit 132 and the movement route provision unit 133 are provided in the control server 13, but the movement route search unit 132 and the movement route provision unit 133 are used. The mobile information terminal 11 may be provided.
In the navigation system 1 shown in FIG. 1 and FIG. 2, the reference distance setting unit 134 and the determination unit 135 are provided in the control server 13, but the reference distance setting unit 134 and the determination unit 135 are connected to the portable information terminal. 11 may be provided.

  At this time, the registration of each control target device (check point) on the movement route is performed on the portable information terminal 11 side. With this configuration, it is determined whether the distance between the current location of the portable information terminal 11 and each control target device (checkpoint) provided on the movement route is equal to or less than the reference distance. Since it is performed inside the information terminal 11, the amount of communication between the portable information terminal 11 and the control server 13 performed in this process can be reduced, and the load on the control server 13 can be reduced. Furthermore, radio channel resources can be saved and current consumption can be reduced. As a result, the battery operating time of the portable information terminal 11 can be made longer.

  The above description is for explaining the embodiment of the present invention, and the present invention is not limited to the above embodiment. Moreover, those skilled in the art can easily change, add, and convert each element of the above embodiment within the scope of the present invention.

It is a figure which shows the structure of the navigation system which concerns on Embodiment 1 of this invention. It is a figure which shows the structure of a portable information terminal. It is a figure which shows the structure of a control server. It is a figure which shows an example of the operation | movement flow of the navigation system which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Navigation system 11 Portable information terminal 111 Antenna 112 Radio | wireless part 113 Position detection part 114 Memory | storage part 115 Input part 116 Display part 117 Control part 12 Radio base station 13 Control server 131 Communication part 132 Movement path search part 133 Movement path provision part 134 Reference | standard Distance setting unit 135 Determination unit 136 Control unit 14 Map information database 15 Facility position information database 16 Traffic light control server 161-163 Pedestrian traffic light 17 Elevator control server 171-173 Elevator 18 Artificial satellite

Claims (11)

A map information storage unit for storing electronic map information;
A control target device position information storage unit for storing position information of the control target device;
A location acquisition unit for acquiring location information of the mobile station;
A route search for searching for the moving route of the mobile station from the current location to the destination from the location information of the mobile station acquired by the location acquisition unit, the location information of the destination input from the mobile station, and the electronic map information And
Providing the mobile station with the mobile route searched by the route search unit in association with the electronic map information together with the position information of the control target device installed on the mobile route. And
In order to determine whether to operate the control target device installed on the movement path based on the moving speed of the mobile station and the time required for the operation of the control target device installed on the movement route A reference distance setting unit for setting the reference distance of
A determination unit that determines whether a distance between the mobile station and a control target device installed on the movement path is equal to or less than the reference distance;
When the determination result of the determination unit is equal to or less than the reference distance, the mobile station transmits a control signal for controlling the control target device installed on the movement path, and the control target device A route guidance system that operates according to a signal.   The route guidance system according to claim 1, wherein the control target device is a traffic light, and the control signal is a command signal for switching the traffic light to blue.   The route guidance system according to claim 1, wherein the control target device is an elevator, and the control signal is a command signal for moving the elevator room of the elevator to a specific floor on the moving route.   The reference distance setting unit sets the reference distance so that the control target device operates when the mobile station arrives at the control target device installed on a moving path. The route guidance system according to claim 1.   2. The route guidance system according to claim 1, wherein the reference distance is a product of a moving speed of the mobile station and a time required for the operation of a control target device installed on the moving route.   The route guidance system according to claim 1, wherein the mobile station has a display unit, and displays each piece of information received from the route providing unit on the display unit.   The route guidance system according to claim 1, further comprising a control server that communicates with the mobile station, wherein the route search unit and the travel route providing unit are provided in the control server.   The route guidance system according to claim 1, wherein the route search unit and the travel route providing unit are provided in the mobile station.   The route guidance system according to claim 1, further comprising a control server that communicates with the mobile station, wherein the reference distance setting unit and the determination unit are provided in the control server.   The route guidance system according to claim 1, wherein the reference distance setting unit and the determination unit are provided in the mobile station.   The route guidance system according to claim 1, wherein the position acquisition unit is provided in the mobile station.

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