JP6815789B2 - Information processing equipment, information processing methods and programs - Google Patents

Description

The present invention relates to information processing technology.

In recent years, mobile terminals having a positioning function by GPS (Global Positioning System), autonomous navigation, or the like have become widespread. The positioning function by autonomous navigation can position a position underground or indoors by using various sensors (for example, a gyro sensor, an acceleration sensor, a geomagnetic sensor). As a technique related to positioning, Patent Document 1 discloses a technique for specifying a current position based on information received from GPS.

Japanese Unexamined Patent Publication No. 2004-340689

However, in the conventional positioning technique, an error may occur between the positioned position and the actual position. In particular, in the case of autonomous navigation, since the position is positioned using various sensors, if the reference value of the sensor deviates, the deviation increases the error of the positioning position. The reference value of the sensor is liable to deviate due to factors such as temperature and usage environment, and in order to eliminate such a deviation, a calibration process for adjusting the reference value of the sensor is generally performed. However, since it is necessary to keep the mobile terminal stationary for a certain period of time in the calibration process, it is difficult to perform the calibration process during route guidance (navigation) in which the mobile terminal is moved while being carried. Therefore, if the reference value of the sensor has already deviated when the route guidance is started by autonomous navigation, the accuracy of positioning will be lowered. In addition, conventionally, it is necessary to instruct the user not to move the terminal and execute the calibration process, which is not convenient.

The present invention has been made in view of the above. An object of the present invention is to provide a technique for performing positioning with higher accuracy.

The information processing apparatus according to the present invention executes a calibration process execution unit that executes a calibration process for adjusting a reference value of a sensor that detects user movement information, and an execution of route guidance application software stored in a storage unit. The calibration processing execution unit includes, at least, a matching unit that identifies an estimated position of the user on the route based on the information of the user's movement detected by the sensor at the time of route guidance indoors. The calibration is performed either when the start of the route guidance application software is detected, when the operation of the menu displayed by starting the route guidance application software is detected, or when the start instruction of the route search is detected. Execute the process.

The information processing method according to the present invention is for controlling an information processing device including a sensor that detects user movement information during indoor route guidance that functions by executing route guidance application software stored in a storage unit. It is an information processing method, and is an estimated position of a user on a path based on a calibration process execution step of executing a calibration process for adjusting a reference value of the sensor and information on the movement of the user detected by the sensor. The calibration process execution step detects, at least, the operation of the menu displayed by starting the route guidance application software when the start of the route guidance application software is detected, including the matching step for specifying the above. The calibration process is executed either when or when the instruction to start the route search is detected.

In the program according to the present invention, the computer executes a calibration process execution unit that executes a calibration process for adjusting a reference value of a sensor that detects user motion information, and an execution of route guidance application software stored in a storage unit. The calibration processing execution unit functions as a matching unit that identifies the estimated position of the user on the route based on the information of the user's movement detected by the sensor at the time of indoor route guidance. The calibration is performed either when the start of the route guidance application software is detected, when the operation of the menu displayed by starting the route guidance application software is detected, or when the start instruction of the route search is detected. Execute the process.

According to the present invention, it is possible to provide a technique for performing positioning with higher accuracy.

It is a conceptual diagram which illustrates the hardware composition of the mobile terminal in embodiment. It is a block diagram which illustrates the functional structure of the mobile terminal in embodiment. It is a conceptual diagram for demonstrating the processing method in Embodiment. It is a conceptual diagram for demonstrating the processing method in Embodiment. It is a conceptual diagram for demonstrating the processing method in the prior art. It is a flowchart for demonstrating the process executed in the mobile terminal in embodiment. It is a flowchart for demonstrating the process executed in the mobile terminal in embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments are examples for explaining the present invention, and are not intended to limit the present invention to only the embodiments. Further, the present invention can be modified in various ways as long as it does not deviate from the gist thereof. Further, those skilled in the art can adopt an embodiment in which each element described below is replaced with an equal one, and such an embodiment is also included in the scope of the present invention.

The hardware configuration of the mobile terminal (information processing device) in the embodiment will be described with reference to FIG. As the mobile terminal 10, for example, a mobile phone (including a smartphone), a tablet terminal, a PDA (Personal Digital Assistants), a navigation device, or the like can be used. The mobile terminal 10 includes, for example, a control unit 11, a communication unit 12, a storage unit 13, an operation unit 14, a display unit 15, a sensor 16, and a speaker 17. The control unit 11 further includes a CPU (Central Processing Unit) 11a, a memory 11b, and the like.

The control unit 11 controls the operation of each component of the mobile terminal 10 by the CPU 11a expanding the program stored in the storage unit 13 or the like into the memory 11b and executing the program, and also executes various information processing. Control. As a program, for example, there is a route guidance (navigation) application software (hereinafter, also referred to as a "route guidance application") described later. Details of the information processing executed by the control unit 11 will be described later.

The communication unit 12 is a communication interface for communicating with an external device. For example, the communication unit 12 receives data and commands from an external device, and transmits the result of information processing by the mobile terminal 10 to the outside.

The storage unit 13 is a non-volatile storage device, and is composed of, for example, a semiconductor memory or the like. The storage unit 13 stores various programs and various data necessary for executing information processing in the control unit 11.

The operation unit 14 is a user interface for receiving a user's instruction of the mobile terminal 10 and outputting it to the control unit 11. The operation unit 14 is composed of, for example, a touch panel, operation keys, and the like.

The display unit 15 is a user interface for displaying the information processing result of the mobile terminal 10. The display unit 15 is composed of a display device using a liquid crystal, an LED (Light Emitting Diode), or the like.

The sensor 16 is composed of various sensors. As the sensor 16, for example, a gyro sensor, an acceleration sensor, a geomagnetic sensor, a barometric pressure sensor, or the like can be used. The sensor 16 detects various actions of the user carrying the mobile terminal 10 at the time of route guidance indoors or the like that functions by executing the route guidance application. In the sensor 16, a calibration process is executed by the control unit 11 in order to correct the deviation of the reference value. As the content of the calibration process executed by the sensor 16, any content of the calibration process can be adopted for each of various sensors.

The speaker 17 outputs various sounds such as voice, music, and sound effects according to the control of information processing by the control unit 11.

The functional configuration of the mobile terminal 10 in the embodiment will be described with reference to FIG. The mobile terminal 10 has, as functional configurations, for example, a database 110, a route guidance unit 111, a signal positioning unit 112, an autonomous navigation positioning unit 113, a moving distance specifying unit 114, a matching unit 115, a display control unit 116, and a calibration processing execution unit. It has 117. These functions are realized, for example, by the CPU 11a in the control unit 11 expanding the program stored in the storage unit 13 or the like into the memory 11b and executing the program. The details of each functional configuration included in the mobile terminal 10 will be described below.

The database 110 stores various data such as data required for information processing executed by the mobile terminal 10 and data generated by the information processing.

The route guidance unit 111 acquires information on the optimum route from the departure point to the destination according to the route search condition input by the user, and presents the optimum route to the user via the display unit 15 or the like. Provides route guidance to the user. The route guidance is performed according to the optimum route obtained as a result of selecting, for example, a route guidance item from the menu displayed after starting the route guidance application, inputting the route search condition, and searching.

Regarding the search for the optimum route, the route guidance unit 111 refers to, for example, map data stored in the database 110 (or acquired from an external device via the communication unit 12) according to the route search condition input by the user. , Acquire the information of the optimum route by executing the route search. Alternatively, the route search process according to the input route search condition may be performed by an external device, and the route guide unit 111 may acquire the process result of the route search.

As the route search method, any method such as the label determination method or the Dijkstra method can be used. The optimum route means that the cost information from the starting point to the destination point is the minimum. The cost information of the link can be set according to the purpose, such as distance, required time, charge, other parameters, and any combination of various parameters.

Further, the route guidance unit 111 presents a route via the display unit 15 for route guidance, displays information on the user's current location specified by information processing described later, and provides voice guidance via the speaker 17. Can be output.

The signal positioning unit 112 measures the current position of the mobile terminal 10 (or the user of the mobile terminal 10) based on the GPS satellite signal received by the GPS receiver (not shown), and the information of the measured position (for example,). (Latitude and longitude information) is output together with the measurement time information. Further, the signal positioning unit 112 can measure the current position of the mobile terminal 10 according to the signal received from the access point installed near the mobile terminal 10.

Further, the mobile terminal 10 receives a signal of a wireless signal transmitting device such as RFID (Radio Frequency Identification) or Bluetooth (registered trademark), and measures the current position of the mobile terminal 10 according to the received signal. You can also. The signal positioning unit 112 performs positioning processing at arbitrary timings and time intervals (for example, every second). Positioning processing performed in response to signals received from an external device, such as GPS satellite signals, signals from access points, and RFID radio signals, is referred to as signal positioning.

The autonomous navigation positioning unit 113 detects the current position (position after movement) of the mobile terminal 10 (or the user of the mobile terminal 10) based on the motion information of the user of the mobile terminal 10 detected by the sensor 16. (That is, positioning by autonomous navigation), and the measured position information (for example, latitude, longitude and altitude information) is output together with the measurement time information. That is, the autonomous navigation positioning unit 113 has a function of acquiring information on the position of the user specified based on the information from the sensor 16 as information on the detection position. For positioning by the autonomous navigation positioning unit 113, any autonomous navigation technique using a sensor 16 or the like can be adopted.

For example, in order to perform positioning, the autonomous navigation positioning unit 113 specifies the number of steps and the moving direction of movement from the reference position during walking movement of the user by the movement of the user detected by the sensor 16, and the specified number of steps. And, based on the movement direction, the information of the relative movement distance and the movement direction from the reference position is calculated. This relative movement distance is, for example, multiplied by the above-specified number of steps by multiplying, for example, a standard stride when a person walks (or a pre-measured stride of the user of the mobile terminal 10) (for example, 65 cm). Calculated by. The autonomous navigation positioning unit 113 can calculate the moving distance in the vertical direction based on, for example, the change in altitude detected by the sensor 16. The autonomous navigation positioning unit 113 measures the current position of the mobile terminal 10 as a detection position based on the information of the relative movement distance and the movement direction from the reference position.

At this time, in order to measure the detection position as an absolute position (for example, a position indicated by latitude and longitude), the reference position needs to be an absolute position. The information of the absolute position set in the reference position can be acquired by any method, for example, by the positioning process of the signal positioning unit 112. Further, the absolute position specified by the user may be adopted as the reference position. The autonomous navigation positioning unit 113 performs positioning processing at arbitrary timings and time intervals (for example, every second).

Further, as described above, the autonomous navigation positioning unit 113 performs the positioning process based on the information on the movement of the user of the mobile terminal 10 detected by the sensor 16, but the user of the mobile terminal 10 detected by the sensor 16 performs the positioning process. Motion information is accumulated for a predetermined period (for example, 1 second), and this accumulated information is used for positioning processing. As a result, a time lag (for example, 1 second or 2 seconds) corresponding to this accumulation period occurs between the detection position specified by the autonomous navigation positioning unit 113 and the actual current position of the mobile terminal 10. Therefore, the autonomous navigation positioning unit 113 outputs a position corrected by a distance corresponding to this accumulation period as a detection position.

For example, when the storage period is 1 second, the autonomous navigation positioning unit 113 advances by, for example, 10 cm, which is a distance that is expected to move on foot from the specified position toward the user's movement direction during the storage period. The position is output as the corrected detection position. In addition, this correction may be performed by the autonomous navigation positioning unit 113, or may be performed by the matching unit 115 described later.

The positioning by the autonomous navigation positioning unit 113 is effective when the mobile terminal 10 cannot receive the GPS signal or the signal from the access point (for example, when the user carrying the mobile terminal 10 is indoors or underground). Alternatively, when the mobile terminal 10 can receive the above signal but the positioning accuracy by the signal positioning unit 112 is considered to be low (for example, when the user carrying the mobile terminal 10 is in a place surrounded by an outdoor high-rise building). However, positioning by the autonomous navigation positioning unit 113 is effective. Therefore, the mobile terminal 10 can switch whether to perform positioning by the signal positioning unit 112 or the autonomous navigation positioning unit 113, for example, according to the reception status of the GPS signal or the signal from the access point.

The moving distance specifying unit 114 starts moving from an arbitrary position (starting point position) that is the starting point of the movement of the user of the mobile terminal 10, and after a predetermined time has elapsed, the mobile terminal specified by the autonomous navigation positioning unit 113 Information on the distance between the detection position (position after movement) and the starting point position of 10 (information on the movement distance) is specified. The moving distance specifying unit 114 can perform a process of specifying information on the moving distance from the starting point position each time the mobile terminal 10 is positioned by the autonomous navigation positioning unit 113.

As the above-mentioned starting point position, a position on the route that the user of the mobile terminal 10 has passed (or the user has started to move) is set. It is desirable to set the information of the starting point position as highly reliable information as possible as the information of the position where the user actually passed (or the user started moving). For example, when the accuracy of positioning by the signal positioning unit 112 is high (for example, when the strength of the received GPS signal is strong), the position of the mobile terminal 10 positioned by the signal positioning unit 112 can be set as the starting position. At this time, the signal positioning unit 112 functions as a starting point position acquisition unit (note that a starting point position acquisition unit that acquires the position information of the output from the signal positioning unit 112 as the starting point position information may be separately provided).

Also, in the present embodiment, the route includes any route that can be moved by the user, such as a road, a plaza, and indoor and underground corridors.

A method of specifying the movement distance information by the movement distance specifying unit 114 will be described with reference to FIG. FIG. 3 shows the starting point position A0 of the mobile terminal 10. Further, when the mobile terminal 10 is at the starting point position A0 (or when the movement is started from the starting point position A0) (time t0) and after a predetermined time has elapsed (time t1), the mobile terminal specified by the autonomous navigation positioning unit 113 10 detection positions (positions after movement) A1 are shown. Further, after the positioning of A1, the detection positions A2, A3, and A4 by the autonomous navigation positioning unit 113 at each of the times t2, t3, and t4 are shown in the order of positioning (in the order of passage of time).

At this time, the moving distance specifying unit 114 specifies the moving distances L1, L2, L3, and L4 from the starting point position A0 to the detection positions A1, A2, A3, and A4, respectively. The moving distance specifying unit 114 can also specify the distance between the detection positions. For example, the distance between A1-A2 can be specified as L12, the distance between A2-A3 can be specified as L13, and the distance between A3-A4 can be specified as L14.

Returning to the description of FIG. The matching unit 115 sets the position advanced by the moving distance specified by the moving distance specifying unit 114 along the route from the above starting point position as the estimated position of the mobile terminal 10 (or the estimated position of the user of the mobile terminal 10). Identify. When the traveling direction when advancing along the route from the starting point position is unknown, the position is advanced in the direction closest to the moving direction specified by the autonomous navigation positioning unit 113.

Further, when the route guidance unit 111 provides the route guidance (presentation of the route) to the user, the matching unit 115 starts from the starting point position and follows the presented route to the destination in the route guidance. It is desirable to specify the user's estimated position at the location advanced in the direction of (route matching). The matching unit 115 can also specify the estimated position of the user on an arbitrary route (map matching) regardless of whether or not the route is presented by the route guidance unit 111.

With reference to FIG. 4, an example of a method of specifying a user's estimated position by the matching unit 115 will be described using the starting point position A0 and the detection positions A1, A2, A3, and A4 shown in FIG. In FIG. 4, the starting point position A0 is shown on the route R (route) presented by the route guide unit 111. The matching unit 115 specifies the position B1 advanced by L1 along the route R from the starting point position A0 as the estimated position of the user at the time t1. Similarly, the matching unit 115 has a position B2 advanced by L2 along the path R from the starting point position A0, a position B3 advanced by L3 along the path R from the starting point position A0, and L4 along the path R from the starting point position A0. The position B4 advanced by is specified as the estimated position of the user at the times t2, t3, and t4, respectively.

As described above, when L12, L13, and L14 are specified as the distances between the detection positions, the distances from B1 to L13 along the path R are advanced by advancing only L12 from the positions B2 and B2 along the path R. It is also possible to specify the position B4 by advancing only L14 from the positions B3 and B3 along the route R.

The estimated position specified by the matching unit 115 is displayed on the display unit 15 as the user's position at each specified time (for example, the user at the corresponding position on the map displayed on the display unit 15). Can be controlled (to display the position of).

As described above, according to the present embodiment, the matching unit 115 does not match the detection position by the autonomous navigation positioning unit 113 with the closest position on the route, but the movement of the user specified by the movement distance specifying unit 114. The user's position is specified at a position on the route based on the distance.

The significance of the method for identifying the user's position according to the present embodiment will be described with reference to the method for identifying the user's position according to the prior art shown in FIG. FIG. 5 shows the starting point position A0 and the detection positions A1, A2, A3, and A4 by the autonomous navigation positioning unit 113. Further, C1, C2, C3, and C4 indicate the positions closest to the detection positions A1, A2, A3, and A4 on the path R. Further, in this example, since there is an error in specifying the moving direction of the user at the start of positioning by the autonomous navigation positioning unit 113, the user is autonomous from the route R in which the user is actually moving with the passage of time. It is shown that the detection position by the navigation positioning unit 113 moves away.

In such a case, if the user's position corresponding to each of the detection positions A1, A2, A3, and A4 is specified as the position C1, C2, C3, and C4 (route matching), the specified user's position will be changed over time. The error between the travel distance and the user's actual travel distance will be accumulated.

On the other hand, according to the present embodiment, the matching unit 115 does not match the detection position by the autonomous navigation positioning unit 113 with the closest position on the route, but the movement of the user specified by the movement distance specifying unit 114. The user's position is specified (matched) to the position on the route based on the distance. As a result, the accumulation of errors as described with reference to FIG. 5 does not occur. Therefore, the position of the mobile terminal 10 (or the position of the user of the mobile terminal 10) can be specified with higher accuracy.

The matching unit 115 has a function of matching the detection position by the autonomous navigation positioning unit 113 with the closest position on the route, in addition to the matching function based on the movement distance of the user specified by the movement distance specifying unit 114. You may be doing it. That is, the matching unit 115 can specify the user's position (estimated position) by any method based on the information of the detection position specified by the autonomous navigation positioning unit 113.

Further, in order to further reduce the accumulation of the above errors, it is desirable that the starting point position used in the above processing by the moving distance specifying unit 114 is updated at a predetermined timing. The higher the frequency of updating the starting point position, the smaller the accumulation of the above errors. In order to update the starting point position, for example, the information of the signal positioning position separated from the estimated position specified by the matching unit 115 by a predetermined distance (for example, 20 m) or more is a signal for a predetermined number of times (for example, two or three times) or more. The above-mentioned starting point position acquisition unit separately provided for acquiring the position information of the output from the signal positioning unit 112 (or the signal positioning unit 112 as the starting point position information) when continuously acquired by the positioning unit 112. ) Acquires the signal positioning position information as the starting point position information and outputs it. The information on the starting point position (and the information on the positioning time of the starting point position) output in this way is used in the above processing by the moving distance specifying unit 114.

As described above, due to the processing by the autonomous navigation positioning unit 113, there is a time lag (for example, 1 second or 2 seconds) according to the accumulation period of the user movement information of the mobile terminal 10 detected by the sensor 16. When this occurs, the matching unit 115 can output a position corrected by a distance corresponding to this accumulation period as an estimated position. For example, when the storage period is 1 second, the matching unit 115 advances a position, for example, 10 cm, which is a distance expected to be moved by walking from the specified position toward the user's movement direction during the storage period. It can be output as the estimated position after correction.

Returning to the description of FIG. The display control unit 116 controls the display of various information and images on the display unit 15. For example, the display control unit 116 controls the display unit 15 to display the estimated position of the user specified by the matching unit 115. For example, the display control unit 116 can display an image (for example, a round or triangular image) at a position in the map image indicating the estimated position of the user.

That is, according to the present embodiment, the mobile terminal 10 functions as a display device that displays the estimated position of the user. Further, the display control unit 116 determines the user's estimated position according to the detection position information which is the user's position information acquired by the autonomous navigation positioning unit 113 based on the user's movement information detected by the sensor 16. Is displayed on the display unit 15.

Specifically, the display control unit 116 is a position on the route on the map, and the image (user's estimation) is at a position specified by the matching unit 115 based on the information of the detection position output by the autonomous navigation positioning unit 113. Control to display an image showing the position).

The calibration process execution unit 117 executes a calibration process for adjusting the reference value of the sensor 16. The calibration process execution unit 117 calibrates, for example, when it detects the activation of the route guidance application, when it detects the operation of the menu displayed by activating the route guidance application, or when it detects the start instruction of the route search. Execute the process.

The execution timing of the calibration process executed in the mobile terminal 10 will be described with reference to FIG. This information processing starts when the route application stored in the storage unit 13 is activated.

First, the control unit 11 executes a calibration process on the sensor 16 (step S101).

Subsequently, the control unit 11 determines whether or not the calibration process executed in step S101 was successful (step S102), and if the calibration process is successful (step S102; YES), the control unit 11 is executed in step S101. The result of the calibration process is stored in the memory 11b (step S108), and the present information processing is terminated.

On the other hand, when it is determined in the determination in step S102 that the calibration process was not successful (step S102; NO), the control unit 11 determines whether or not the menu displayed by activating the route guidance application has been operated. Determine (step S103). Then, when it is determined that the menu has been operated (step S103; YES), the control unit 11 executes the calibration process on the sensor 16 (step S104).

Subsequently, the control unit 11 determines whether or not the calibration process executed in step S104 was successful (step S105), and if the calibration process is successful (step S105; YES), the control unit 11 is executed in step S104. The result of the calibration process is stored in the memory 11b (step S108), and the present information processing is terminated.

On the other hand, when it is determined in the determination in step S105 that the calibration process was not successful (step S105; NO), the control unit 11 determines whether or not the start of the route search is instructed (step S106). Then, when it is determined that the start of the route search is instructed (step S106; YES), the control unit 11 executes the calibration process on the sensor 16 (step S107).

Subsequently, the control unit 11 saves the result of the calibration process executed in step S107 in the memory 11b (step S108), and ends the information processing.

As described above, according to the present embodiment, the case where the route guidance is started in the mobile terminal 10 and the user is easily kept in a stationary state without moving the mobile terminal 10. In addition, it becomes possible to execute a calibration process on the sensor 16. As the situation where it is easy to maintain the stationary state, for example, when the route application is started, when the menu is operated, and when the search is started, it corresponds.

In addition, by setting the timing to execute the calibration process multiple times, such as when the route application is started, when the menu is operated, and when the search is started, it is assumed that the static state cannot be maintained at any of the timings and the calibration process is not successful. However, it is possible to make the calibration process successful at other timings.

As a result, according to the present embodiment, even if the reference value of the sensor 16 deviates before the route guidance by autonomous navigation is started, the sensor 16 is calibrated before the route guidance is started. The position of the mobile terminal 10 (or the position of the user of the mobile terminal 10) can be determined with higher accuracy.

Further, according to the present embodiment, the calibration process can be executed without instructing the user not to move the mobile terminal 10, so that the convenience of the user can be improved.

The timing of executing the calibration process is not limited to the time when the above-mentioned activation of the route guidance application is detected, the operation of the menu is detected, or the instruction to start the route search is detected, and the calibration process is performed at another timing. You may do it. For example, when the calibration process is not successful at the above timing, the calibration process may be executed at an arbitrary timing during the route guidance, and the execution may be repeated at predetermined intervals until it succeeds. It is desirable to execute the calibration process at least when the activation of the route guidance application is detected, the operation of the menu is detected, or the instruction to start the route search is detected.

With reference to FIG. 7, a processing flow at the time of route guidance including indoors executed in the mobile terminal 10 will be described.

First, the control unit 11 executes a route search while referring to the map data and the like stored in the storage unit 13 according to the route search condition input by the user of the mobile terminal 10, from the departure point to the destination. (Or the optimum route) information is acquired (step S201).

Subsequently, the control unit 11 acquires highly reliable information as information on the starting point position as information on the position where the user actually passed (or the user started moving) on the route searched in step S201. (Step S202). For example, when the accuracy of positioning by signal positioning described above is high (for example, when the strength of the received GPS signal is strong), the position of the mobile terminal 10 positioned by signal positioning can be set as the starting position.

Subsequently, the control unit 11 uses the user's position and movement direction information specified (positioning) based on the user's movement information of the mobile terminal 10 detected by the sensor 16 as the detection position and movement direction information, respectively. Acquire (step S203).

Subsequently, the control unit 11 starts the movement of the user of the mobile terminal 10 from the starting point position acquired in step S202, and after a lapse of a predetermined time, the detection position of the mobile terminal 10 specified in step S203 (after movement). The information on the distance between the position) and the starting point position (information on the moving distance) is specified (step S204).

Subsequently, the control unit 11 is specified in the step S203 by the movement distance specified in the step S204 along the route (the route searched in the step S201) from the starting point position acquired in the step S202. The position advanced in the moving direction (or the direction closest to the moving direction) is specified (map matching or route matching) as the estimated position of the mobile terminal 10 (or the estimated position of the user of the mobile terminal 10) (step S205). ).

Subsequently, the control unit 11 controls the display unit 15 to display the estimated position of the user specified in step S205 (step S206).

As described above, according to the present embodiment, the matching in step S205 is based on, for example, the moving distance of the user specified in step S204, instead of matching to the route closest to the position determined in step S203. Specify the user's position at the position on the route. Therefore, it is possible to suppress the accumulation of errors that occur in the prior art described with reference to FIG. As a result, according to the present embodiment, the position of the mobile terminal 10 (or the position of the user of the mobile terminal 10) can be determined with higher accuracy.

Here, the processing steps included in the processing flows of FIGS. 6 and 7 can be arbitrarily changed in order or executed in parallel within a range that does not cause a contradiction in the processing contents, and each processing step can be executed. Other steps may be added in between. Further, the steps described as one step for convenience can be executed by being divided into a plurality of steps, while those described as one step can be grasped as one step for convenience. Further, each processing step is performed by the CPU 11a expanding the program stored in the storage unit 13 or the like into the memory 11b and executing the program in the control unit 11.

The present invention is not limited to the above-described embodiment, and can be implemented in various other forms without departing from the gist of the present invention. The above embodiments are merely exemplary in all respects and are not to be construed as limiting.

In the above-described embodiment, the autonomous navigation positioning unit 113 outputs the detection position, but it is not essential to output the detection position. It suffices if information on the moving distance and the moving direction can be output based on the movement of the user detected by the sensor 16. In this case, the moving distance specifying unit 114 may specify the moving distance information from the starting point position based on the moving distance and moving direction information acquired from the autonomous navigation positioning unit 113 and the starting point position.

Further, the program of the present invention can be installed or loaded on a computer by downloading through various recording media such as an optical disk such as a CD-ROM, a magnetic disk, and a semiconductor memory, or via a communication network or the like. ..

10 Mobile terminal, 11 Control unit, 12 Communication unit, 13 Storage unit, 14 Operation unit, 15 Display unit, 16 Sensor, 17 Speaker, 110 Database, 111 Route guidance unit, 112 Signal positioning unit, 113 Autonomous navigation positioning unit, 114 Movement distance identification unit, 115 matching unit, 116 display control unit, 117 calibration processing execution unit

Claims (4)

A calibration process execution unit that executes a calibration process for adjusting the reference value of the sensor that detects user movement information, and
A route presentation unit that presents the route to the destination to the user,
A starting point position acquisition unit that acquires information on a starting point position that is a position on the path that the user has passed through.
The starting point position is detected by the sensor during indoor route guidance that functions by executing the route guidance application software stored in the storage unit, and is based on the user's movement information accumulated for a predetermined period and the starting point position. The movement distance identification part that specifies the movement distance from
A matching unit that identifies the estimated position of the user on the route based on the moving distance from the starting point position ,
With
The calibration processing execution unit detects at least when the start of the route guidance application software is detected, when the operation of the menu displayed by starting the route guidance application software is detected, and when the route search start instruction is detected. either upon to perform the calibration process,
The matching unit sets the position advanced by the movement distance along the path from the starting point position as the estimated position, and further advances the distance that the user moves from the estimated position along the route within the predetermined period. Identify the position as the estimated position after correction,
Information processing device. The sensor includes at least one of a gyro sensor, an acceleration sensor, a geomagnetic sensor, and a barometric pressure sensor.
The information processing device according to claim 1. An information processing method for controlling an information processing device equipped with a sensor that detects user movement information during indoor route guidance that functions by executing route guidance application software stored in a storage unit.
A calibration process execution step for executing a calibration process for adjusting the reference value of the sensor, and
A route presentation step that presents the route to the destination to the user,
A starting point position acquisition step for acquiring information on a starting point position, which is a position on the path passed by the user, and
A movement distance specifying step for specifying a moving distance from the starting point position based on the user's movement information detected by the sensor and accumulated for a predetermined period and the starting point position.
A matching step that identifies the estimated position of the user on the route based on the distance traveled from the starting point position ,
Including
The calibration process execution step detects at least when it detects the start of the route guidance application software, when it detects the operation of the menu displayed by starting the route guidance application software, and when it detects the start instruction of the route search. either upon to perform the calibration process,
In the matching step, the position advanced by the movement distance along the path from the starting point position is set as the estimated position, and the distance that the user moves from the estimated position along the route within the predetermined period is further advanced. Identify the position as the estimated position after correction,
Information processing method. Computer,
Calibration process execution unit that executes calibration processing to adjust the reference value of the sensor that detects user movement information,
Route presentation unit that presents the route to the destination to the user,
A starting point position acquisition unit that acquires information on a starting point position that is a position on the path passed by the user.
The starting point position is detected by the sensor during indoor route guidance that functions by executing the route guidance application software stored in the storage unit, and is based on the user's movement information accumulated for a predetermined period and the starting point position. Movement distance identification part, which specifies the movement distance from
A matching unit that identifies a user's estimated position on the route based on the distance traveled from the starting point .
To function as
The calibration processing execution unit detects at least when the start of the route guidance application software is detected, when the operation of the menu displayed by starting the route guidance application software is detected, and when the route search start instruction is detected. either upon to perform the calibration process,
The matching unit sets the position advanced by the movement distance along the path from the starting point position as the estimated position, and further advances the distance that the user moves from the estimated position along the route within the predetermined period. Identify the position as the estimated position after correction,
program.