JP6688926B2 - Route guidance system, mobile terminal, and route guidance method - Google Patents

Description

  The present invention relates to a route guidance system, a mobile terminal, and a route guidance method.

  Japanese Unexamined Patent Application Publication No. 2007-147528 (Patent Document 1) states that "an offline route display system includes a recognition code reading unit that reads a recognition code recording map information and / or route information from a predetermined place to a predetermined place. The mobile terminal device includes a recognition code decoding means and a display means, and displays the route information read by the recognition code reading means on the display means. "

JP-A-2007-147528

In the technique described in Patent Document 1, a mobile terminal can read the identification code and display a map or route from the installation location to a predetermined location. However, in Patent Document 1, a recognition code installed on a street guide plate, telephone pole, fence, or the like is read. And these guide plates, telephone poles, fences, etc. do not necessarily exist continuously on the route.
An object of the present invention is to provide a technique that enables route guidance even in an environment where GPS signals cannot be received.

  The following is a brief description of the outline of the typical invention disclosed in the present application.

  A mobile terminal according to an embodiment of the present invention is a mobile terminal that guides a route from a current location to a destination, and an imaging unit that reads a recognition code displayed on a warning block provided on the ground or floor. Have. Further, the control unit has a control unit that acquires warning block identification information for identifying the warning block from the recognition code read by the imaging unit. Further, the control unit acquires the position information corresponding to the warning block identification information, and displays the current position specified from the acquired position information.

  A mobile terminal according to an embodiment of the present invention is a mobile terminal that guides a route from a current location to a destination, and an imaging unit that reads a recognition code displayed on a warning block provided on the ground or floor. Have. Further, the control unit has a control unit that acquires warning block identification information for identifying the warning block from the recognition code read by the imaging unit. The control unit calculates a reading angle based on the recognition code, calculates the direction of the mobile terminal based on the calculated reading angle and the orientation of the recognition code, and calculates the direction of the mobile terminal, A guidance direction for voice guidance is calculated based on the traveling direction.

  A route guidance method according to an embodiment of the present invention is a route guidance method in a mobile terminal that guides a route from a current location to a destination, and an image capturing unit is displayed on a warning block provided on the ground or floor. The identification code reading step of reading the recognized identification code is included. The control unit further includes a warning block identification information acquisition step of acquiring warning block identification information for identifying the warning block from the recognition code read by the imaging unit. Further, the control unit includes a current position display step of acquiring position information corresponding to the warning block identification information and displaying the current position specified from the acquired position information.

The effects obtained by the typical ones of the inventions disclosed in the present application will be briefly described as follows.
According to one embodiment of the present invention, route guidance is possible even in an environment in which GPS signals cannot be received.

It is a figure which shows the outline | summary of the structural example of the route guidance system in Embodiment 1 of this invention. It is a figure which shows the outline | summary of the structural example of the guidance information memorize | stored in the guidance information storage part of the route provision server in Embodiment 1 of this invention. It is a figure which shows the outline | summary of the structural example of the beacon position information memorize | stored in the beacon position information storage part of the position information provision server in Embodiment 1 of this invention. It is a figure which shows the outline of the structural example of the destination setting screen displayed on the display of the portable terminal in Embodiment 1 of this invention. It is a figure which shows the outline of the example of a structure of the route guidance screen displayed on the display of the portable terminal in Embodiment 1 of this invention. It is a figure which shows the outline of the whole process of the route guidance system in Embodiment 1 of this invention. It is a figure which shows the outline | summary of the whole process of the route guidance system in Embodiment 2 of this invention. It is a figure which shows the relationship between the recognition code read by the portable terminal and reading angle in Embodiment 1 of this invention. FIG. 7 is another diagram showing the relationship between the recognition code read by the mobile terminal and the reading angle according to the first embodiment of the present invention. It is a figure explaining the rule by which the recognition code read by the portable terminal in Embodiment 1 of this invention is attached. It is a figure which shows the state in which the recognition code read by the portable terminal in Embodiment 1 of this invention was stuck on the platform. It is a figure which shows the state in which the recognition code read by the portable terminal in Embodiment 1 of this invention was stuck on the platform. It is a figure explaining the route guidance based on the connection information referred to by the portable terminal in Embodiment 1 of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that, in all the drawings for explaining the embodiments, the same parts are denoted by the same reference symbols in principle and the repeated description thereof will be omitted.
(Embodiment 1)
<System configuration>
FIG. 1 is a diagram showing an outline of a configuration example of a route guidance system according to the first embodiment of the present invention.

  As illustrated in FIG. 1, the route guidance system includes a beacon device 300, a mobile terminal 100 to which data is transmitted from the beacon device 300 via wireless communication, and a route provision connected to the mobile terminal 100 via a network. It is composed of the server 200.

  Beacon device 300 is installed on the premises of a subway station or on the platform of a subway station. The beacon device 300 is also installed in an underground passage leading to a subway station or an underground store. The beacon device 300 broadcasts (transmits) beacon device identification information for identifying the beacon device 300 to the mobile terminal 100 by using short-range wireless (Bluetooth (registered trademark) or the like). As a result, the beacon device 300 transmits the beacon device identification information to the portable terminal 100 in the subway station premises, in the subway station platform, in the underground passage leading to the subway station, or in the underground store. Send. Note that the beacon device 300 may use ultra-wide band communication (Ultra Wide Band) to broadcast (transmit) beacon device identification information for identifying the beacon device 300 to the mobile terminal 100. In addition, Wi-Fi (registered trademark) access point identification information (SSID) or Wi-Fi fingerprint may be used together. When the mobile terminal 100 receives radio waves from the beacon devices 300 installed at a plurality of locations, a pattern of radio wave intensity or phase (Angle of Arrival) unique to the position may be used as the identification information. In that case, the mobile terminal 100 transmits the identification information to the route providing server 200, the route providing server 200 acquires the position information corresponding to the identification information, and transmits the acquired position information to the mobile terminal 100.

  The mobile terminal 100 receives the beacon device identification information transmitted from the beacon device 300 via wireless communication. The mobile terminal 100 operates a corresponding application by reading various application programs. As an application operated by the application program read by the mobile terminal 100, there is a route guidance application for guiding a route from the present location to the destination. Then, when the route guidance application is activated, the mobile terminal 100 guides the route from the current location to the destination. The mobile terminal 100 has an imaging unit 110, a control unit 120, and a guide information storage unit 130.

The imaging unit 110 of the mobile terminal 100 is a CCD camera included in the mobile terminal 100, a camera connected to the mobile terminal 100 via a wired or wireless network, or a camera connected to the mobile terminal 100 via a wired or wireless network. Wearable devices such as are applicable.
The imaging unit 110 of the mobile terminal 100 reads the recognition code displayed on the warning block provided on the ground or floor.

  The Braille block imaged by the image capturing unit 110 of the mobile terminal 100 is provided on the ground or floor surface, and the projection is formed on the surface so that a visually impaired person or a pedestrian can recognize the tactile sensation of the sole of the foot. ing. The braille block includes a guide block (line block) and a warning block (dot block). In the guide block, a plurality of parallel lines are formed in a protrusion shape along the moving direction. In the warning block, dots are formed in a grid pattern, and one or more points are provided at a branch point of a route, a point where the route is curved, a dead end, or the like.

  A QR code (Quick Response Code: registered trademark), which is an example of a recognition code, is displayed in the warning block. Warning block identification information for identifying a warning block is encoded and recorded in the recognition code. In addition, in the identification code, the route identification information for identifying the route name information indicating the route name, the station identification number for identifying the station name information indicating the station name, and the place for identifying the location The location identification information for identifying the information may be encoded.

  A number (warning block identification information) is assigned in advance to each recognition code. Then, as shown in FIG. 10, the recognition code is arranged so that the upper part (upper side of the recognition code) faces the recognition code assigned the smallest number among the recognition codes adjacent to the next branch destination of the route. It can be pasted.

  In the example shown in FIG. 10, among the recognition codes adjacent to the recognition code 610, the recognition code 620 has the smallest number. Therefore, the upper portion of the recognition code 610 faces the recognition code 620 and is attached to the warning block. Further, among the recognition codes adjacent to the recognition code 620, the recognition code 610 has the smallest number. Therefore, the upper part of the recognition code 620 faces the recognition code 610 and is attached to the warning block.

  The recognition code may be displayed on the guidance block. In this case, the identification code is displayed in the groove formed between the parallel protruding lines of the guide block. Regarding the guide block, the identification code may be displayed on the protruding line. Further, a plurality of recognition codes may be displayed along the four corners of the guide block or along the outer circumference.

  In the warning block, the recognition code is displayed on the plane portion formed in the area excluding the points. Regarding the warning block, the recognition code may be displayed on the plane portion formed by excluding the outermost point and any one of the four corners. Further, a plurality of recognition codes may be displayed along the outer circumference. Alternatively, the recognition code may be displayed on the plane portion formed by excluding the outermost point and any points other than the four corners (the central point, etc.).

  Alternatively, the central portion of the recognition code may be cut out in a square shape with one side having a length of 1.5 to 2.5 cm and displayed in an area surrounded by four points of the warning block. This allows the recognition code to be displayed in the warning block without excluding points.

  Further, the recognition code may be displayed on the warning block by attaching a seal on which the recognition code is printed to the warning block. Further, the recognition code may be displayed on the warning block by printing the recognition code on the warning block. Further, the identification code may be displayed only in the warning block of the type. By displaying the recognition code only on the warning block, it is possible to reduce the trouble of displaying (providing) the recognition code on the warning block.

  The imaging unit 110 reads the recognition code only from the warning block of the type. As a result, the number of times the image capturing unit 110 reads the Braille block can be reduced, and the communication amount can be minimized. Also, the number of Braille blocks displaying the recognition code (QR code) can be reduced.

Further, the imaging unit 110 reads the recognition code on the departure place side, in which the order (history) in which each recognition code (QR code) exists between the departure place and the destination is the smallest.
The control unit 120 of the mobile terminal 100 decodes the recognition code read by the imaging unit 110 and acquires the warning block identification information recorded in the recognition code.

  The control unit 120 of the mobile terminal 100 acquires the position information corresponding to the warning block identification information, and specifies the current position from the acquired position information. More specifically, the control unit 120 acquires the position information corresponding to the warning block identification information transmitted from the route providing server 200 connected to the mobile terminal 100 via the network. The mobile terminal 100 may include the guide information storage unit 220 in which guide information (described later, FIG. 2) is stored. In that case, the mobile terminal 100 acquires the corresponding position information by searching the guidance information storage unit 220 using the acquired warning block identification information as a key.

  The control unit 120 of the mobile terminal 100 determines the position information of each QR code from the current location to the destination, the order (history) in which each QR code exists between the departure location and the destination, and the direction between the QR codes. Based on the route information composed of, the route guidance screen (to be described later, FIG. 5) is displayed and the route guidance is performed.

  Specifically, the control unit 120 of the mobile terminal 100 reads the recognition code at a position specified by the position information of each QR code from the current position to the destination, which constitutes the route information (hereinafter, referred to as a recognition code reading position). Display the recognition code reading position marker. The control unit 120 may display the recognition code reading position marker only at the position where the QR code exists at the branch point. Further, the control unit 120 determines the order of the QR codes on the recognition code reading position marker or the recognition code reading position based on the order (history) in which each QR code forming the route information exists between the departure point and the destination. It may be displayed near the marker.

In addition, the control unit 120 determines the position information of each QR code from the current position to the destination, which constitutes the route information, the order (history) in which each QR code exists from the starting point to the destination, and the QR code interval. Based on the direction of, the guidance marker indicating the route and the traveling direction is displayed at the position where the guidance block is located.
The route information is generated on the route providing server 200 or in the application of the mobile terminal 100 when the present location and the destination are clarified.

  The recognition code is pasted inside the warning block such that the upper side of the recognition code is parallel to the upper side forming the frame line of the warning block. Then, the recognition code is attached so that the recognition code assigned the smallest number among the adjacent recognition codes faces upward.

As shown in FIG. 8, angles are assigned such that the upper side of the recognition code is 0 degrees, the right side is 90 degrees, the lower side is 180 degrees, and the left side is 270 degrees. As described above, the upper side of the recognition code faces the recognition code to which the smallest number is assigned among the adjacent recognition codes.
Therefore, the control unit 210 of the route providing server 200 can identify the current body orientation of the user from the orientation of the captured recognition code.

  The control unit 120 of the mobile terminal 100 determines the reading angle indicating the orientation of the body with respect to the recognition code or the orientation of the mobile terminal 100 with respect to the recognition code, depending on the positional relationship of the finder patterns (cutout symbols) arranged at the three corners of the QR code. calculate. Then, the control unit 120 of the mobile terminal 100 holds the calculated reading angle. The reading angle corresponds to, for example, the angle of inclination of the upper side of the recognition code with respect to the orientation of the user's body, and the angle of inclination of the upper side of the recognition code with respect to the orientation of the mobile terminal 100.

  As shown in FIG. 9A, when the finder patterns are arranged in the upper right, upper left, and lower left, the control unit 120 of the mobile terminal 100 calculates the reading angle as 0 degree. Further, as shown in FIG. 9B, when the finder patterns are arranged at the upper left, lower left, and lower right, the control unit 120 of the mobile terminal 100 calculates the reading angle as 90 degrees. . Further, as shown in FIG. 9C, when the finder patterns are arranged in the upper right, lower right, and lower left, the control unit 120 of the mobile terminal 100 calculates the reading angle as 180 degrees. To do. Further, as shown in FIG. 9D, when the finder patterns are arranged at the upper left, the upper right, and the lower right, the control unit 120 of the mobile terminal 100 calculates the reading angle as 270 degrees. .

In the guide information stored in the guide information storage unit 130 of the mobile terminal 100 and the guide information storage unit 220 of the route providing server 200, which angle points north is stored in advance. The control unit 120 of the mobile terminal 100 and the control unit 220 of the route providing server 200 calculate the azimuth of the mobile terminal 100 by comparing the reading angle with the stored angle indicating north.
The control unit 120 of the mobile terminal 100 calculates the traveling direction from the current position to the position at which the next recognition code is read by referring to the route information. By knowing the north angle, the control unit 120 estimates the direction in which the user is facing based on the QR code reading angle and the north angle. Then, the control unit 120 rotates the map so that the estimated orientation is at the top of the map.
Note that the azimuths stored in advance in the guidance information storage unit 130 and the guidance information storage unit 220 are not limited to north as long as they are either directions. The control unit 120 calculates the azimuth of the mobile terminal 100 by comparing the reading angle with the stored azimuth.

  Further, the control unit 120 of the mobile terminal 100 calculates the direction of the mobile terminal 100 (user) (the direction in which the mobile terminal faces the recognition code) based on the direction of the recognition code and the reading angle. For example, when the reading angle is 0 degree, the mobile terminal 100 is facing the direction of the recognition code (direction of the smallest recognition code among the adjacent recognition codes).

In addition, the control unit 120 of the mobile terminal 100 calculates the orientation of the read recognition code by searching the guidance information storage unit 130 using the warning block identification information of the read recognition code as a key and referring to the corresponding edge information. To do.
Then, the control unit of the mobile terminal 100 calculates the direction of the mobile terminal 100 (user) based on the orientation of the recognition code and the reading angle.

  Then, the control unit 120 of the mobile terminal 100 calculates a guidance direction for voice guidance based on the calculated direction of the mobile terminal 100 and the traveling direction. For example, when the direction of the mobile terminal 100 and the traveling direction match, the control unit 120 calculates the guide direction as straight traveling. When the difference between the direction of the mobile terminal 100 and the traveling direction is 180 degrees, the control unit 120 calculates the guide direction as backward.

Further, the control unit 120 of the mobile terminal 100, based on the position information (current position) and the position information (latitude, longitude) of the next guidance point (the position at which the recognition code is read next), provides the next guidance from the current position. Calculate the distance traveled to the point.
Then, the control unit 120 of the mobile terminal 100 causes the speaker to output a sound for instructing the calculated guide direction and moving distance.

  The control unit 120 of the mobile terminal 100 acquires the position information corresponding to the beacon device identification information transmitted from the beacon device 300, and corresponds to the beacon device identification information when the position information corresponding to the warning block identification information cannot be acquired. The current position may be specified from the position information.

  The route providing server 200 has a control unit 210, a guidance information storage unit 220, and a beacon position information storage unit 230. The route providing server 200 stores map data for displaying a map. The route providing server 200 generates route information of a route whose node is the QR code reading position for reading the QR code existing between the current position and the destination, and transmits the generated route information to the mobile terminal 100.

  The control unit 210 of the route providing server 200 searches the guidance information storage unit 220 using the warning block identification information transmitted from the mobile terminal 100 as a key, and acquires the corresponding position information. Then, the route providing server 200 transmits the acquired position information to the mobile terminal 100.

  Further, the control unit 210 of the route providing server 200 searches for a route from the current position transmitted from the mobile terminal 100 to the destination. The control unit 210 searches the guidance information storage unit 220 using the position information from the current position to the destination, which constitutes the searched route, as a key, and acquires the position information of each QR code existing between the current position and the destination. To do. In addition, the control unit 210 numbers the order of each QR code existing between the departure place and the destination, and gives the direction between the QR codes. As a result, the control unit 210 determines the position information of each QR code from the current location to the destination, the order (history) in which each QR code exists between the departure location and the destination, and the direction between the QR codes. Generate configured route information. Then, the route providing server 200 transmits the generated route information to the mobile terminal 100. Note that the mobile terminal 100 may itself generate the route information from the starting point to the destination, which has received the input, and the route information may further include beacon identification information.

  The control unit 210 of the route providing server 200 determines the next position from the current position based on the position information (current position) and the position information (latitude, longitude) of the next guidance point (position at which the recognition code is read next). You may make it calculate the moving distance to a guidance point. In that case, the control part 210 produces | generates the audio | voice guidance information for outputting the audio | voice which instruct | indicates the calculated advancing direction and moving distance.

The control unit 210 of the route providing server 200 acquires, from the beacon position information storage unit 230, position information corresponding to the beacon identification information transmitted by the beacon device 300 to the mobile terminal 100, and the location identification information. Then, the route providing server 200 transmits the acquired position information and place identification information to the mobile terminal 100.
<Guidance information>

  FIG. 2 is a diagram showing an outline of the guide information stored in the guide information storage unit 130 of the mobile terminal 100 and the guide information storage unit 220 of the route providing server 200 according to the first embodiment of the present invention. As shown in FIG. 2, the guidance information includes warning block identification information, location information, location information, station name information, route name information, landmark direction, edge information, connection information, and which angle points north. It is composed of data items such as the north angle.

The warning block identification information indicates a code for identifying the warning block. The warning block identification information is a number assigned to the recognition code. The recognition code is pasted in the direction of the smallest number among the recognition codes adjacent to the recognition code.
The position information is information for specifying the position of the warning block (the position of the QR code), and is composed of latitude and longitude, for example. The location information is information for identifying underground locations such as “stairs”, “gates”, “platforms”, and “vending machines”.
The location information may be composed of a platform name, a train destination, a train vehicle number, and door information for identifying a train car door. The station name information indicates the name of the station. The route name information indicates the name of the route.
The direction of the landmark indicates the angle (direction of the landmark) where the QR code is attached to the landmark such as a ticket gate or platform. If the direction of the registered landmark is 0 degrees, it means that there is a landmark in front of the warning block. If the direction of the registered landmark is 90 degrees, the landmark is on the right side of the warning block. If the direction of the registered landmark is 180 degrees, it means that there is a landmark on the back side of the warning block. If the direction of the registered landmark is 270 degrees, the warning block is present. Means that there is a landmark on the left side of. The edge information indicates warning block identification information (number) of adjacent recognition blocks.

  In the example shown in FIG. 11, the recognition code 920 attached to the edge of the platform is registered so that the orientation of the landmark of 180 degrees (the back side of the recognition code 920) faces the platform. In this case, when the recognition code 920 is read from the side of the landmark at 0 degrees (the upper side of the recognition code 920), the control unit 120 of the mobile terminal 100 notifies that the edge of the platform is in front. The voice guidance for doing is output to the speaker.

  More specifically, the control unit 120 of the mobile terminal 100 calculates the reading angle based on the positional relationship of the finder patterns (cutout symbols) arranged at the three corners of the QR code. Then, the control unit 120 causes the speaker to output the corresponding voice guidance based on the direction of the landmark registered in the recognition code 920 and the reading angle. For example, when the reading angle matches the orientation of the registered landmark, the control unit 120 of the mobile terminal 100 outputs a voice guidance to the speaker to notify that "the edge of the platform is in front". Let

  On the other hand, as shown in FIG. 12, when the reading angle is 90 degrees and the registered landmark orientation is 180 degrees, the difference between the reading angle and the registered landmark orientation is 90 degrees. If it is, the control unit 120 of the mobile terminal 100 causes the speaker to output the voice guidance for notifying that “the edge of the platform is on the right”.

The rule that the connection information is pasted to the recognition code assigned the smallest number among the adjacent recognition codes due to construction work or the wrong sticking direction of the pasting worker collapses the rule. This is information for making it possible to change the registered pasting direction in the case of a failure. The connection information includes warning block identification information (number) of the connection source, warning block identification number (number) of the connection destination, and an angle of the connection destination.
The control unit 120 of the mobile terminal 100 calculates the direction of the mobile terminal 100 based on the connection information and the reading angle.

  As shown in FIG. 13A, before the construction, the authentication code 1310 is attached such that the authentication code 1320 assigned the smallest number among the adjacent authentication codes faces upward. There is. The authentication code 1320 is attached such that the authentication code 1310 assigned the smallest number among the adjacent authentication codes faces upward.

As shown in FIG. 13B, the authentication code 1310 to the authentication code 1320 may not be connected by the guide block after the construction. In that case, by referring to the connection information, the control unit 120 of the mobile terminal 100 connects the 270-degree direction of the authentication code 1310 and the 0-degree direction of the authentication code 1330, and connects the 270-degree direction of the authentication code 1330. The route guidance is performed assuming that the direction and the 90 ° direction of the authentication code 1340 are connected, and the 0 ° direction of the authentication code 1340 and the 90 ° direction of the authentication code 1320 are connected.
<Beacon location information>

  FIG. 3 is a diagram showing an outline of a configuration example of beacon position information stored in the beacon position information storage unit 230 of the route providing server 200 according to the first embodiment of the present invention. As shown in FIG. 3, the beacon position information includes data items such as beacon identification information, position information, and place information.

The beacon identification information indicates a code for identifying the beacon device 300. The position information indicates information for specifying the position where the beacon device 300 is installed. The location information indicates the location where beacons such as “stairs”, “gates”, “platforms”, and “vending machines” are installed.
<Destination setting screen>

  FIG. 4 is a diagram showing an outline of the destination setting screen displayed on the display of the mobile terminal 100 according to the first embodiment of the present invention. As shown in FIG. 4, a current position display area 121, a destination display area 122, and a route guidance start button 123 are displayed on the destination setting screen.

In the present location display area 121, station name information (such as Iidabashi Station), route name information (such as Yurakucho Line), and location information (for platform XX bound for No. XX car XX doors), which is information related to the user's current location, are displayed. Is displayed.
In the destination display area 122, the destination received from the user is displayed.

When the route guidance start button 123 is pressed, the mobile terminal 100 requests the route providing server 200 for a route from the current location displayed in the current location display area 121 to the destination displayed in the destination display area 122.
<Route guidance screen>

  FIG. 5 is a diagram showing an outline of the route guidance screen displayed on the display of the mobile terminal 100 according to the first embodiment of the present invention. As shown in FIG. 5, on the route guidance screen, a current position display marker 131 indicating the current position of the user, a recognition code reading position marker 132 indicating a position where the recognition code is read, a recognition code imaging button 133, The guidance marker 134 is displayed.

  The control unit 120 of the mobile terminal 100 displays the recognition code reading position marker 132 that reads the recognition code at the position specified by the position information of each QR code from the current position to the destination, which constitutes the route information. As a result, the recognition code reading position marker 132 is displayed at the position where the warning block exists on the route from the starting point to the destination.

  In addition, the control unit 120 determines the position information of each QR code from the current position to the destination, which constitutes the route information, the order (history) in which each QR code exists from the starting point to the destination, and the QR code interval. Based on the direction of, the guide marker 134 indicating the route and the traveling direction is displayed at the position where the guide block exists.

  Specifically, the control unit 120 displays the guide marker 134 between the recognition code reading position marker 132 having the smallest marker order and the recognition code reading position marker 132 having the second smallest marker order.

  Specifically, the control unit 120 sets the guide marker between the recognition code reading position marker 132 having the smallest marker order (history) and the recognition code reading marker 132 having the second smallest marker order (history). Display 134.

Specifically, first, the control unit 120 displays the guide marker 134 between the current position and the recognition code reading position marker 132 having the highest marker order (history). Next, the control unit 120 causes the guide marker 134 to be displayed between the recognition code reading position marker 132 having the highest marker order and the second marker order. The control unit 120 performs the same processing until the marker order reaches the largest value. As a result, the guide marker 134 is displayed between the current position display marker 131 and the recognition code reading position marker 132. The guidance marker 134 is displayed between the recognition code reading position marker 132 and the recognition code reading position marker 132 where the recognition code is read next.
When the recognition code image capturing button 133 is pressed once, the mode is switched to the image capturing mode, and thereafter, the QR code is automatically read until the destination is reached.
<Overall processing>

  FIG. 6 is a diagram showing an overview of overall processing of the road guidance system according to the first embodiment of the present invention. The destination setting screen (described above, FIG. 4) is displayed on the display of the mobile terminal 100.

First, in S601, the imaging unit 110 of the mobile terminal 100 reads the recognition code of the warning block. Then, the control unit 120 of the mobile terminal 100 acquires the warning block identification information. Further, the control unit 120 of the mobile terminal 100 calculates the reading angle based on the recognition code read by the imaging unit 110. Then, the control unit 120 of the mobile terminal 100 holds the reading angle.
Next, in S602, the mobile terminal 100 transmits the warning block identification information acquired in S601 to the route providing server 200.

Next, in step S603, the route providing server 200 receives the warning block identification information transmitted in step S602. Then, the control unit 210 of the route providing server 200 searches the guidance information storage unit 220 using the received warning block identification information as a key, and acquires the corresponding position information, place information, station name information, and route name information. To do.
Next, in S604, the route providing server 200 transmits the position information, the location information, the station name information, and the route name information acquired in S603 to the mobile terminal 100.

  Next, in S605, the mobile terminal 100 receives the position information, the location information, the station name information, and the route name information transmitted in S604. Then, the control unit 120 of the mobile terminal 100 causes the current location display area 121 to display information about the current location identified from the received position information, location information, station name information, and route name information.

Next, in S606, the mobile terminal 100 receives the input of the destination. Specifically, the mobile terminal 100 accepts the input of the destination by displaying the candidate list and selecting the destination from the list. The control unit 120 of the mobile terminal 100 displays the destination for which the input is accepted in the destination display area 122.
Next, in step S <b> 607, the mobile terminal 100 receives an input for pressing the route guidance start button 123.
Next, in S608, the mobile terminal 100 transmits the position information of the current position and the position information of the destination for specifying the destination to the route providing server 200.

  Next, in S609, the route providing server 200 receives the position information of the current position and the position information of the destination transmitted in S608. Then, the control unit 210 of the route providing server 200 searches for a route from the current position to the destination. The control unit 210 uses the QR code as a node to search for a route using a known algorithm for searching for the shortest route. The route providing server 200 may store the current location, the destination, and the route from the current location to the destination in association with each other in advance.

  Next, in S610, the control unit 210 of the route providing server 200 searches the guidance information storage unit 220 by using the position information from the current location to the destination, which constitutes the route searched in S609, as a key, and searches from the current location to the destination. The position information of each QR code to the ground is acquired. In addition, the control unit 210 numbers the order of each QR code existing between the departure point and the destination, and refers to the searched route (see the direction from the current location to the destination) to determine the inter-QR code interval. Give the direction of.

  Next, in S611, the control unit 210 of the route providing server 200, the position information of each QR code from the current location to the destination, and the order in which each QR code exists between the departure location and the destination (history). And the direction between QR codes are generated.

In addition, when the user is underground, the control unit 210 of the route providing server 200 may generate route information in which the destination closest to the destination is an exit from the underground to the ground.
Next, in S612, the route providing server 200 transmits the route information generated in S611 to the mobile terminal 100.

  Next, in S613, the mobile terminal 100 receives the route information transmitted in S612. Then, the control unit 120 of the mobile terminal 100 causes the display to display the route guidance screen (described above, FIG. 5) including the route based on the received route information.

More specifically, the control unit 120 of the mobile terminal 100 displays a recognition code reading position marker that reads a recognition code at a position specified by the position information of each QR code from the current position to the destination that forms the received route information. Let In addition, the control unit 120 determines the position information of each QR code from the current position to the destination, which constitutes the route information, the order (history) in which each QR code exists from the starting point to the destination, and the QR code interval. Based on the direction of, the guidance marker indicating the route and the traveling direction is displayed at the position where the guidance block is located.
Further, the control unit 120 of the mobile terminal 100 identifies the traveling direction from the current position to the position where the next recognition code is read by referring to the received route information.

  Further, the control unit 120 of the mobile terminal 100 searches the guidance information storage unit 130 using the warning block identification information of the recognition code read in S601 as a key, and refers to the corresponding edge information to read in the S601. Calculate the orientation of the recognition code.

  Then, the control unit of the mobile terminal 100 calculates the direction of the mobile terminal 100 (user) based on the orientation of the recognition code and the reading angle. Then, the control unit 120 calculates the guidance direction for voice guidance based on the calculated direction of the mobile terminal 100 and the traveling direction.

Further, the control unit 120 of the mobile terminal 100, based on the position information (current position) and the position information (latitude, longitude) of the next guidance point (the position at which the recognition code is read next), provides the next guidance from the current position. Calculate the distance traveled to the point.
Then, the control unit 120 of the mobile terminal 100 causes the speaker to output a sound for instructing the calculated guide direction and moving distance.

Note that the control unit 120 of the mobile terminal 100 refers to the route information, and the position information (latitude, longitude) of the previous guidance point, the position information (latitude, latitude of the next guidance point (position where the recognition code is read)). The guide direction may be calculated based on three points of the longitude) and position information (latitude, longitude) of the next guide point. This allows the guidance direction to be output to the speaker by voice before reaching the guidance point.
The control unit 120 may display the recognition code reading position marker 132 only at the position where the QR code is read at the branch point.

  Next, in S <b> 614, the control unit 120 of the mobile terminal 100 determines whether the imaging unit 110 has newly read a recognition code from the warning block at the next recognition code reading position. In S614, when the control unit 120 determines that the recognition code is not newly read (S614-No), the process proceeds to S614. On the other hand, when the control unit 120 determines that the recognition code is newly read (S614-Yes), the process proceeds to S615.

Next, in S615, control unit 120 of mobile terminal 100 acquires warning block identification information from the newly read recognition code. Further, the control unit 120 of the mobile terminal 100 calculates the reading angle based on the recognition code read by the imaging unit 110. Then, the control unit 120 of the mobile terminal 100 holds the reading angle.
Next, in S616, the mobile terminal 100 transmits the warning block identification information acquired in S615 to the route providing server 200.

Next, in S617, the route providing server 200 receives the warning block identification information transmitted in S616. Then, the control unit 210 of the route providing server 200 searches the guidance information storage unit 220 using the received warning block identification information as a key, and acquires the corresponding position information.
Next, in S618, the route providing server 200 transmits the position information acquired in S617 to the mobile terminal 100.

  Next, in S619, the mobile terminal 100 receives the position information transmitted in S618. Then, the control unit 120 of the mobile terminal 100 displays the current position specified from the received position information on the route guidance screen. More specifically, the control unit 120 updates the route guidance screen by displaying the current position display marker 131 at the current position identified from the position information.

  Further, the control unit 120 of the mobile terminal 100 identifies the traveling direction from the current position to the position where the next recognition code is read by referring to the received position information and route information.

  Further, the control unit 120 of the mobile terminal 100 searches the guidance information storage unit 130 by using the warning block identification information of the recognition code read in S601 as a key, and refers to the corresponding edge information to read in S614. Calculate the orientation of the recognition code.

  Then, the control unit 120 of the mobile terminal 100 calculates the direction of the mobile terminal 100 (user) based on the orientation of the recognition code and the reading angle calculated in S615. Then, the control unit 120 calculates the guidance direction for voice guidance based on the calculated direction of the mobile terminal 100 and the traveling direction.

Further, the control unit 120 of the mobile terminal 100, based on the position information (current position) and the position information (latitude, longitude) of the next guidance point (the position at which the recognition code is read next), provides the next guidance from the current position. Calculate the distance traveled to the point.
Then, the control unit 120 of the mobile terminal 100 causes the speaker to output a sound for instructing the calculated guide direction and moving distance.

  Next, in S620, control unit 120 of mobile terminal 100 determines whether or not the destination has been reached. When the control unit 120 determines that the destination is reached (S620-Yes), the entire process ends. On the other hand, when the control unit 120 determines that the destination has not been reached (S620-No), the process returns to S614.

  The control unit 210 of the route providing server 200 may calculate the direction of the mobile terminal 100 (user) based on the orientation of the recognition code and the reading angle. In this case, control unit 310 calculates a guidance direction for voice guidance based on the calculated direction of mobile terminal 100 and the traveling direction.

In addition, the control unit 210 of the route providing server 200, based on the position information (current position) and the position information (latitude, longitude) of the next guidance point (the position at which the recognition code is read next), changes from the current position to the next position. You may make it calculate the moving distance to a guidance point. In this case, the control unit 210 generates voice guidance information for outputting a voice instructing the calculated traveling direction and moving distance. Further, the moving distance from the current position to the next guidance point may be calculated in advance and stored in the guidance information storage unit 220 of the route providing server 200 and the guidance information storage unit 130 of the mobile terminal 100. In that case, the control unit 210 and the control unit 120 acquire the movement distance from the current position to the next guidance point from the guidance information storage unit 220, and the voice guidance information is based on the acquired movement distance and the calculated traveling direction. To generate.
<Effect of Embodiment 1>

According to the first embodiment described above, the control unit 120 of the mobile terminal 100 acquires the position information corresponding to the warning block identification information, and identifies the current position from the acquired position information, so that the route (station This makes it easy to check the current location on the premises, indoors, outdoors, etc. That is, it is possible to reach the reading position of the recognition code by following the guidance block. Then, route guidance in an environment where GPS signals cannot be received, such as underground, can be realized at low cost.
Further, since the warning block is used, maintenance can be easily performed only by replacing the QR code.

  In addition, the control unit 120 of the mobile terminal 100 acquires the position information corresponding to the warning block identification information transmitted from the route providing server 200, so that the route can be guided even in the underground. Note that the control unit 120 of the mobile terminal 100 can acquire the position information corresponding to the warning block identification information even outdoors such as underground.

  Further, the image capturing unit 110 of the mobile terminal 100 reads the recognition code only from the warning block of the type, so that the power consumption of the mobile terminal 100 and the communication charge can be suppressed. Further, the next warning block can be reached by following the guidance block, and the route guidance can be realized with the minimum number of readings.

  In addition, the control unit 120 of the mobile terminal 100 controls the position information of each QR code from the current location to the destination, the order (history) in which each QR code exists from the departure location to the destination, and between the QR codes. By displaying the recognition code reading position marker 132 for reading the recognition code at the position where the warning block is present based on the route information including the direction, the user can recognize the position where the recognition code is read next time.

  In addition, the control unit 120 of the mobile terminal 100 causes the recognition code reading position display marker 132 to be displayed at the position where the warning block is at the branch point, so that the user can display the recognition code reading position display marker 132 at the branch point. You can update the current position by reading.

  In addition, the control unit 120 of the mobile terminal 100 causes the guide marker 134 to be displayed at the position where the guide block exists based on the route information, so that the user can know the route and the traveling direction and the sense of distance until the next recognition code is read. Can be recognized.

Further, when the control unit 120 of the mobile terminal 100 acquires the position information corresponding to the beacon device identification information transmitted from the beacon device 300 and cannot acquire the position information corresponding to the warning block identification information, the control unit 120 determines that the beacon device identification information is used. By identifying the current position from the corresponding position information, the current position information can be acquired even if the recognition code cannot be acquired.
Further, the control unit 120 of the mobile terminal 100 calculates the reading angle based on the recognition code, and calculates the direction of the mobile terminal 100 based on the calculated reading angle and the orientation of the recognition code,
By calculating the guidance direction for voice guidance based on the direction of the mobile terminal 100 and the traveling direction, it is possible to perform voice guidance of an accurate guidance direction corresponding to the direction of the mobile terminal 100.
Further, the control unit 120 refers to the orientation of the landmark in which the landmark exists with respect to the recognition code, and calculates the azimuth in which the landmark exists based on the difference between the orientation of the referenced landmark and the reading angle. By doing so, it becomes possible to accurately inform the user of the direction in which the landmark exists.
Further, the control unit 120 can provide the user with an accurate azimuth by calculating the azimuth based on the reading angle and the angle pointing north.
In addition, the control unit 120 calculates the direction of the mobile terminal 100 based on the connection information and the reading angle, so that even if the placement of the guide block is changed due to construction or the like, the correct guiding direction is obtained. Will be available for voice guidance.
(Embodiment 2)

The difference between the second embodiment and the first embodiment is that, in the second embodiment, mobile terminal 100 performs route guidance by voice to visually impaired persons, and the route information includes voice guidance information. is there.
Hereinafter, in the second embodiment, points different from the first embodiment will be mainly described with reference to FIG. 7.
<Overall processing>

  FIG. 7 is a diagram showing an outline of overall processing of the route guidance system in the second embodiment of the present invention. The destination setting screen (described above, FIG. 4) is displayed on the display of the mobile terminal 100.

  First, in step S701, the imaging unit 110 of the mobile terminal 100 reads the recognition code of the warning block. Then, the control unit 120 of the mobile terminal 100 acquires the warning block identification information. Further, the control unit 120 of the mobile terminal 100 calculates the reading angle based on the recognition code read by the imaging unit 110. Then, the control unit 120 of the mobile terminal 100 holds the reading angle.

  Next, in S702, the mobile terminal 100 transmits the warning block identification information acquired in S701 to the route providing server 200. The mobile terminal 100 also transmits the reading angle calculated in S701 to the route providing server 200.

Next, in S703, the route providing server 200 receives the warning block identification information and the reading angle transmitted in S702. Then, the control unit 210 of the route providing server 200 searches the guidance information storage unit 220 using the received warning block identification information as a key, and acquires the corresponding position information. Further, the control unit 210 of the route providing server 200 holds the reading angle transmitted from the mobile terminal 100.
Next, in S704, the route providing server 200 transmits the position information acquired in S703 to the mobile terminal 100.

  Next, in S705, the mobile terminal 100 receives the position information transmitted in S704. Then, the control unit 120 of the mobile terminal 100 causes the current position display area 121 to display information about the current position specified from the received position information.

Next, in S706, the mobile terminal 100 receives the input of the destination. The control unit 120 of the mobile terminal 100 displays the destination for which the input is accepted in the destination display area 122.
Next, in step S <b> 707, the mobile terminal 100 receives an input for pressing the route guidance start button 123.
Next, in step S708, the mobile terminal 100 transmits the position information of the current position and the position information of the destination for specifying the destination to the route providing server 200.

  Next, in S709, the route providing server 200 receives the position information of the current position and the position information of the destination transmitted in S708. Then, the control unit 210 of the route providing server 200 searches for a route from the current position to the destination.

  Next, in S710, the control unit 210 of the route providing server 200 searches the guidance information storage unit 220 by using the position information from the current position to the destination, which constitutes the route searched in S709, as a key, and from the current position to the destination. The position information of each QR code to the ground is acquired. The control unit 210 also assigns a direction between the QR codes by numbering the order of each QR code existing from the starting point to the destination and referring to the searched route.

  Based on the reading angle calculated in S701 and the direction (direction between the QR codes given in S610) of the point (the position where the warning block exists) to proceed to next, the control unit 210 calculates, from the current position, Next, the traveling direction to the position where the recognition code is read is calculated.

  The control unit 210 also searches the guidance information storage unit 220 using the warning block identification information received in S703 as a key, and refers to the corresponding edge information to calculate the orientation of the recognition code read in S701. To do.

  Then, the control unit 210 calculates the direction of the mobile terminal 100 (user) based on the direction of the recognition code and the reading angle received in S703. Then, the control unit 120 calculates the guidance direction for voice guidance based on the calculated direction of the mobile terminal 100 and the traveling direction.

Further, the control unit 210 moves from the current position to the next guide point based on the position information (current position) and the position information (latitude, longitude) of the next guide point (the position where the recognition code is read next). Calculate the distance.
Then, the control unit 210 generates voice guidance information for outputting a voice instructing the calculated guidance direction and movement distance.

Next, in S711, the control unit 210 of the route providing server 200, the position information of each QR code from the current location to the destination, and the order in which each QR code exists between the departure point and the destination (history). And route information composed of directions between QR codes and voice guidance information.
Next, in S712, the route providing server 200 transmits the route information generated in S711 to the mobile terminal 100.

  Next, in S713, the mobile terminal 100 receives the route information transmitted in S712. Then, the control unit 120 of the mobile terminal 100 causes the display to display the route guidance screen (described above, FIG. 5) including the route based on the received route information. In addition, the mobile terminal 100 outputs a voice for instructing the guide direction and the moving distance based on the received voice guide information that constitutes the route information.

  More specifically, the control unit 120 of the mobile terminal 100 causes the speaker to output a voice for guiding from the received position information (QR code position information) to the next QR code reading position.

  Next, in S714, the control unit 120 of the mobile terminal 100 determines whether or not the recognition code is newly read from the warning block at the next recognition code reading position by the imaging unit 110. When the control unit 120 determines in S714 that the recognition code is not newly read (S714-No), the process proceeds to S714. On the other hand, when the control unit 120 determines that the recognition code is newly read (S714-Yes), the process proceeds to S715.

  Next, in S715, control unit 120 of mobile terminal 100 acquires warning block identification information from the newly read recognition code. Further, the control unit 120 of the mobile terminal 100 calculates the reading angle based on the recognition code read by the imaging unit 110. Then, the control unit 120 of the mobile terminal 100 holds the reading angle.

  Next, in S716, the mobile terminal 100 transmits the warning block identification information acquired in S715 to the route providing server 200. The mobile terminal 100 also transmits the reading angle calculated in S715 to the route providing server 200.

  Next, in S717, the route providing server 200 receives the warning block identification information and the reading angle transmitted in S716. Then, the control unit 210 of the route providing server 200 searches the guidance information storage unit 220 using the received warning block identification information as a key, and acquires the corresponding position information. Further, the control unit 210 of the route providing server 200 holds the reading angle transmitted from the mobile terminal 100.

  Based on the reading angle calculated in S715 and the direction of the point (the position where the warning block exists) to proceed to next (direction between the QR codes given in S710), the control unit 210 calculates from the current position, Next, the traveling direction to the position where the recognition code is read is calculated.

  Further, the control unit 210 searches the guidance information storage unit 220 using the warning block identification information received in S717 as a key, and refers to the corresponding edge information to calculate the orientation of the recognition code read in S714. To do.

  Then, the control unit 210 calculates the direction of the mobile terminal 100 (user) based on the direction of the recognition code and the reading angle received in S717. Then, the control unit 120 calculates the guidance direction for voice guidance based on the calculated direction of the mobile terminal 100 and the traveling direction.

Further, the control unit 210 moves from the current position to the next guide point based on the position information (current position) and the position information (latitude, longitude) of the next guide point (the position where the recognition code is read next). Calculate the distance.
Then, the control unit 210 generates voice guidance information for outputting a voice instructing the calculated guidance direction and movement distance.

  Next, in S718, the route providing server 200 transmits the position information acquired in S717 to the mobile terminal 100. Further, the route providing server 200 transmits the voice guidance information generated in S717 to the mobile terminal 100.

Next, in S719, the mobile terminal 100 receives the position information and the voice guidance information transmitted in S718. Then, the control unit 120 of the mobile terminal 100 displays the current position specified from the received position information in the current position display area 121.
The mobile terminal 100 also outputs a voice for instructing the traveling direction and the moving distance based on the received voice guidance information.

  Note that the control unit 120 of the mobile terminal 100 acquires (identifies) the received position information (position information of the QR code) and the corresponding voice guidance information that is given in advance by referring to the route information, and acquires the position information. You may make it output the audio | voice based on audio | voice guidance information to a speaker.

  Next, in S720, control unit 120 of mobile terminal 100 determines whether or not the destination has been reached. When the control unit 120 determines that the destination is reached (S720-Yes), the entire process ends. On the other hand, when the control unit 120 determines that the destination has not been reached (S720-No), the process returns to S714.

In S715, the control unit 120 of the mobile terminal 100 determines whether or not the position information of the QR code of the acquired warning block identification information is included in the position information of the QR code forming the route information received in S713. May be determined. In this case, when the control unit 120 does not include the QR code position information of the warning block identification information acquired in S715 in the QR code position information forming the route information received in S713, the control unit 120 Cause the speaker to output an error message indicating that it is off the path.
<Effect of Embodiment 2>

  As described above, according to the second embodiment, as an effect different from the first embodiment, the control unit 120 of the mobile terminal 100 acquires the voice guidance information corresponding to the warning block identification information, and acquires the voice. By outputting the voice corresponding to the guidance information, it becomes possible to guide the route to the visually impaired who moves while following the guidance block. Also, voice guidance can be provided at the QR code position, which is a node. Furthermore, visually impaired persons can confirm the current position without using a tactile map.

Although the invention made by the present inventor has been specifically described based on the embodiment, the invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.
For example, in some embodiments, the mobile terminal is a tablet terminal. In addition to the tablet terminal, the mobile terminal includes all mobile terminals of various forms.

  Further, the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. . In addition, a part of the configuration of each embodiment may be added, deleted, or replaced with another configuration.

  Further, each of the above-described configurations, functions, and processing units may be partially or entirely realized by hardware (for example, integrated circuit). Further, each of the above-described configurations, functions, and processing units may be realized by software by a processor interpreting and executing a program that realizes each function. Information such as a program, a table, and a file that realizes each function can be placed in a memory, a hard disk, a recording device such as an SSD (Solid State Drive), or a recording medium such as an IC card, an SD card, and a DVD.

100 ... Mobile terminal, 110 ... Imaging unit, 120 ... Control unit,
200 ... Route providing server, 210 ... Control unit, 220 ... Guidance information storage unit,
300 ... Beacon device.

Claims (14)

A mobile terminal that guides the route from the current location to the destination,
An imaging unit that reads the recognition code displayed on the warning block provided on the ground or floor,
A control unit that acquires warning block identification information for identifying the warning block from the recognition code read by the imaging unit;
Have
Wherein the control unit acquires position information corresponding to the warning block identification information to identify the acquired positional information or al current position, the position information of each identification code from the current position to the destination, the identification code The guide direction is output based on the route information composed of the order in which exists from the starting point to the destination and the direction between the recognition codes.
Mobile terminal. The mobile terminal according to claim 1,
The control unit acquires the position information corresponding to the warning block identification information, which is transmitted from a route providing server connected to the mobile terminal via a network. The mobile terminal according to claim 1,
The imaging unit reads the identification code only from a warning block of a type, which is a mobile terminal. A mobile terminal that guides the route from the current location to the destination,
An imaging unit that reads the recognition code displayed on the warning block provided on the ground or floor,
A control unit that acquires warning block identification information for identifying the warning block from the recognition code read by the imaging unit;
Have
The control unit acquires position information corresponding to the warning block identification information, and displays the current position specified from the acquired position information,
The control unit stores the position information of each recognition code from the current position to the destination, the order in which each recognition code exists between the starting point and the destination, and the route information including the direction between the recognition codes. Based on the guide block, a guide marker indicating the route and the traveling direction is displayed based on the guide block.
Mobile terminal. The mobile terminal according to claim 4,
The mobile terminal, wherein the control unit displays the recognition code reading position marker at a position where the warning block is located at a branch point. The mobile terminal according to claim 4,
The said control part is a portable terminal which displays a guidance marker in the position where the said guidance block exists based on the said route information. The mobile terminal according to claim 1,
The control unit acquires the position information corresponding to the beacon device identification information transmitted from the beacon device, and if the position information corresponding to the warning block identification information cannot be acquired, the position corresponding to the beacon device identification information A mobile terminal for identifying the current position from information. The mobile terminal according to claim 1,
The said control part is a portable terminal which acquires the audio | voice guidance information corresponding to the said warning block identification information, and outputs the audio | voice corresponding to the acquired said audio | voice guidance information. A mobile terminal that guides the route from the current location to the destination,
An imaging unit that reads the recognition code displayed on the warning block provided on the ground or floor,
A control unit that acquires warning block identification information for identifying the warning block from the recognition code read by the imaging unit;
Have
The control unit is
A reading angle is calculated based on the recognition code, and the direction of the mobile terminal is calculated based on the calculated reading angle and the orientation of the recognition code,
From the direction of the mobile terminal, the traveling direction, the position information of each recognition code from the current position to the destination, the order in which each recognition code exists between the starting point and the destination, and the direction between the recognition codes. Based on the configured route information , output the guidance direction for voice guidance,
Mobile terminal. The mobile terminal according to claim 9,
The recognition code is pasted to the recognition code to which the smallest number is assigned among the recognition codes adjacent to the next branch destination of the route so that the upper part faces.
The control unit calculates the orientation of the recognition code by referring to the number of the adjacent recognition block,
Mobile terminal. The mobile terminal according to claim 9,
The control unit is
Referring to the direction of the landmark where the landmark exists for the recognition code,
The orientation of the landmark is calculated based on the difference between the reference orientation of the landmark and the reading angle,
Mobile terminal. The mobile terminal according to claim 9,
Further has a guidance information storage unit in which an angle indicating one of the directions is stored in advance,
The control unit calculates an azimuth based on the reading angle and an angle pointing north,
Mobile terminal. The mobile terminal according to claim 9,
Further, it has a guidance information storage unit in which connection information composed of a connection source recognition block number, a connection destination recognition block number, and a connection destination angle is stored.
The control unit calculates the direction of the mobile terminal based on the connection information and the reading angle,
Mobile terminal. A route guidance method in a mobile terminal that guides a route from a current location to a destination,
A recognition code reading step in which the imaging unit reads the recognition code displayed on the warning block provided on the ground or floor,
A warning block identification information acquisition step in which the control unit acquires warning block identification information for identifying the warning block from the recognition code read by the imaging unit;
Wherein the control unit, the warning block acquires position information corresponding to the identification information to identify the acquired positional information or al current position, the position information of each identification code from the current position to the destination, the identification code The guide direction is output based on the route information composed of the order in which exists from the starting point to the destination and the direction between the recognition codes.
Output step,
And a route guidance method.