JP5497407B2 - POSITION INFORMATION ACQUISITION DEVICE AND PROGRAM FOR MOBILE TERMINAL DEVICE - Google Patents

Description

  The present invention relates to an apparatus and a program for acquiring position information of a mobile terminal device through a network.

  In recent years, mobile terminal devices having a communication function and a self-position detection function such as a mobile phone incorporating a GPS (Global Positioning System) receiver and a PDA (Personal Digital Assistant) have become widespread. A portable terminal device that detects its own position by communicating with a wireless base station is also known (Patent Document 1).

  Users of these mobile terminal devices can be provided with various services related to the current location, for example, information such as advertisements associated with areas including the vicinity of the current location via the network (Patent Document 2).

  When providing a service that provides information associated with an area including the current position of such a mobile terminal device, the side providing the information needs to know accurately that the mobile terminal device exists in the predetermined area. There is.

  However, since the self-location information measured by the mobile terminal device (hereinafter referred to as terminal positioning information) includes an error, the information providing side uses the terminal positioning information transmitted from the mobile terminal device as it is, If it is determined whether or not the mobile terminal device exists within a predetermined area, a correct determination result may not be obtained.

JP 2002-310692 A JP 2005-184271 A

  The present invention has been made to solve such a problem, and an object of the present invention is to determine whether or not the mobile terminal device exists within a predetermined area using terminal positioning information transmitted from the mobile terminal device. It is to improve the determination accuracy when determining whether or not.

The present invention is transmitted from the portable terminal device, the terminal positioning information by using the measurement time information, position information acquisition unit of the portable terminal apparatus determines whether the mobile terminal device exists in a predetermined area A first determination unit that determines whether or not a position indicated by the terminal positioning information exists in the area; and a position indicated by the terminal positioning information by the first determination unit continuously for a predetermined number of times. If you determine the constant to be present within the region, the portable terminal device is determined to exist in the region, the first determining means, the position indicated by the terminal positioning information continuously for the predetermined number of times the If it is determined not to exist in the region, said second determination means for the portable terminal device is determined not to exist in the region, the first determining means, the position is the area indicated by the terminal positioning information When it is determined that An in-area determination state and the time of transition to the state are written, and when the second determination means determines that the mobile terminal device exists in the area, a predetermined in-area determination state is written and the in-predetermined area determination In the state, when the first determination unit determines that the position indicated by the terminal positioning information does not exist within the predetermined area, the determination unit writes a determination state outside the predetermined area and a time when the state transitions to the state, and the second And a terminal device management table that writes a predetermined out-of-predetermined state when it is determined that the terminal positioning count in the out-of-predetermined region determination state has reached a predetermined number of times . This is a position information acquisition device.

[Action]
According to the present invention, when determining whether or not the mobile terminal device exists in a predetermined area, if the position indicated by the terminal positioning information transmitted from the mobile terminal device exists in the area, the predetermined number of times continues. If it is determined, or if it is determined that it exists in the area for a predetermined time or more, it is determined that the mobile terminal device exists in the area.

  ADVANTAGE OF THE INVENTION According to this invention, the determination precision when determining whether a portable terminal device exists in a predetermined area | region using the terminal positioning information from a portable terminal device improves.

It is a figure which shows the positional infomation acquisition system of embodiment of this invention. It is a block diagram which shows the electric constitution of the portable terminal device in FIG. It is a figure which shows the relationship between the positioning level of the GPS receiver in FIG. 2, and an error range. FIG. 2 is a block diagram showing an electrical configuration of a position information acquisition server in FIG. 1. It is a flowchart which shows operation | movement of the portable terminal device in FIG. It is a flowchart which shows schematic operation | movement of the position information acquisition server in FIG. It is a state transition diagram which shows the content of the positional information acquisition process in FIG. It is a figure which shows the terminal device management table used in FIG. It is a figure which shows an example of the relationship between the time which calculated GPS position information, the inside and outside of a predetermined area | region, and a state. It is the figure which plotted the position shown in FIG. 9 inside and outside a predetermined area | region. It is a figure which shows another example of the relationship between the time which calculated GPS position information, the inside and outside of a predetermined area | region, and a state. It is the figure which plotted the position shown in FIG. 11 inside and outside a predetermined area | region. It is a figure which shows another example of the relationship between the time which calculated GPS position information, the inside and outside of a predetermined area | region, and a state. It is the figure which plotted the position shown in FIG. 13 inside and outside a predetermined area | region.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
<Configuration of location information acquisition system>
FIG. 1 is a diagram showing a position information acquisition system according to an embodiment of the present invention. This system includes a location information acquisition server 2 connected to a network 1 such as the Internet, and a mobile terminal device 4 connected to the network 1 via a base station 3. The mobile terminal device 4 is a mobile phone, PDA, PND (Personal Navigation Device), or the like. The mobile terminal device 4 and the location information acquisition server 2 can communicate via the base station 3 and the network 1. The location information acquisition server 2 corresponds to the location information acquisition device of the present invention.

<Configuration of mobile terminal device>
FIG. 2 is a block diagram of the mobile terminal device 4. The mobile terminal device 4 includes a control unit 41, an operation unit 42, a display unit 43, a GPS reception unit 44, and a wireless communication unit 45.

  The control unit 41 is a controller for controlling each unit of the mobile terminal device 4, and includes a CPU (Central Processing Unit) 411, a ROM (Read Only Memory) 412, and a RAM (Random Access Memory) 413. The CPU 411 implements various processes to be described later by loading a program stored in the ROM 412 into the RAM 413 and executing it.

  The operation unit 42 includes various buttons for the user to operate the mobile terminal device 4. The display unit 43 includes a liquid crystal display device for displaying the operation state of the mobile terminal device 4 and information input by the user from the operation unit 42.

  The GPS receiver 44 receives a radio wave transmitted from a GPS satellite at regular time intervals (for example, 5 minutes) according to an instruction from the controller 41, and measures (positions) the current position. Then, GPS position information as terminal positioning information, measurement time information, and positioning level information indicating an error range (measurement accuracy) of the GPS position information are output to the control unit 41.

  FIG. 3 shows the relationship between the positioning level and the error range. In the present embodiment, the horizontal error at the measurement position is less than 50 m, the level is 3; However, this is only an example, and it goes without saying that the number of positioning levels and the distance of the horizontal error range may be other values. Note that the positioning level information can be created based on, for example, the number of GPS satellites used for positioning, the S / N of the radio wave reception signal from the GPS satellites, and the like.

  Returning to the description of FIG. The wireless communication unit 45 is a circuit for performing wireless communication with the base station 3. The wireless communication unit 45 accesses the location information acquisition server 2 via the base station 3, and stores the GPS location information, measurement time information, and positioning level information generated by the GPS reception unit 44 of the mobile terminal device 4, and the ROM 412. It is possible to transmit the terminal device ID of the mobile terminal device 4 that is being used.

<Configuration of location information collection server>
As shown in FIG. 4, the position information acquisition server 2 includes a control unit 21, a communication unit 22, and a storage unit 23.

  The control unit 21 includes a CPU 211, a ROM 212, and a RAM 213, and controls the entire position information acquisition server. Further, the CPU 211 implements various processes to be described later by loading a program stored in the ROM 212 into the RAM 213 and executing the program.

  The communication unit 22 communicates with the mobile terminal device 4 via the network 1 and the base station 3. The storage unit 23 is composed of an HDD (hard disk device), and is provided with a terminal device management table 231.

  The terminal device management table 231 is a table for managing the position information of the mobile terminal device 4 using the GPS position information, measurement time information, positioning level information, and terminal device ID transmitted from the mobile terminal device 4. is there. The contents of this table will be described later.

<Operation of location information acquisition system>
A schematic operation of the position information acquisition system having the above configuration will be described with reference to the flowcharts shown in FIGS. Here, FIG. 5 shows the operation of the mobile terminal device 4, and FIG. 6 shows the operation of the location information acquisition server 2.

  In the mobile terminal device 4, when the flow shown in FIG. 5 starts every time a timer (not shown) counts for a certain time (for example, 5 minutes), the CPU 411 first sends GPS position information and measurement time to the GPS receiver 44. Information and positioning level information are requested and acquired (step S1).

  Next, the CPU 411 compares with the previous GPS position information and determines whether or not the position indicated by the current GPS position information has changed by a predetermined distance or more from the position indicated by the previous GPS position information (step S2).

  As a result of the determination, if the distance has changed by a predetermined distance or more (S2: YES), the current GPS position information, positioning level information, and measurement time information are transmitted to the position information acquisition server 2 through the wireless communication unit 44 (step) S3) The process is terminated. If the result of determination is that there has not been a change over a predetermined distance (S2: NO), the processing ends.

  In the location information acquisition server 2, the CPU 211 of the control unit 22 receives the GPS location information, the positioning level information, and the measurement time information from the mobile terminal device 4 through the communication unit 22 (step S11). Next, the CPU 211 performs position information acquisition processing (step S12).

<Contents of location information acquisition processing>
The contents of the position information acquisition process (S12) will be described with reference to the state transition diagram shown in FIG. 7 and the terminal device management table 231 shown in FIG.

  In FIG. 7, the solid line is an operation when the position indicated by the GPS position information is within a predetermined area, and the broken line is an operation when the position is outside the area. Further, in FIG. 8, “terminal device ID” is the terminal device ID of the portable terminal device 4, “area ID” is the area identification information, and “state” is the state of FIG. 7 (NULL: initial state, ARRIVE: in the predetermined area) Identification information indicating a determination state, IN: determined state within a predetermined region, LEAVE: determined state outside a predetermined region, OUT: determined state outside a predetermined region), “number” indicates the position indicated by the GPS position information continuously in that state “AR1 time” is the time when the state other than ARRIVE is changed to the ARRIVE state, and “LE1 time” is the time when the state is changed from the state other than LEAVE to the LEAVE state. In the “update time”, the current time is written except in the “NULL” state.

  In FIG. 7, the initial state is “NULL”. In this state, nothing is written in the terminal device management table 231. When the position indicated by the GPS position information falls within a predetermined area, the terminal device ID of the mobile terminal device 4 that has transmitted the GPS position information to the “terminal device ID” of the terminal device management table 231 is changed to the “AR” state. , “Area ID” is the area ID, “state” is “ARRIVE”, “number of times” is “1”, and “AR1 time” is the current time (measurement time information received together with GPS position information), Each written.

  In the “ARRIVE” state, when the position indicated by the GPS position information is outside the predetermined area, the state shifts to the “NULL” state and the contents of the terminal device management table 231 are deleted.

  On the other hand, in the “ARRIVE” state, when the position indicated by the GPS position information continues to be within the predetermined area, the “number of times” in the terminal device management table 231 is incremented. Then, when the “number” reaches n (n is a preset integer equal to or larger than 2), the state transits to the “IN” state, and “IN” becomes “number” in the “state” of the terminal device management table 231. “1” is written respectively.

The “IN” state means that the CPU 211 has determined that the current position of the mobile terminal device 4 has entered a predetermined area held in the “area ID” of the terminal apparatus management table 231. That is, when it is determined that the position indicated by the GPS position information exists in the predetermined area n times continuously, it is determined that the mobile terminal device 4 exists in the predetermined area.

  In the “IN” state, when the position indicated by the GPS position information continues to be within the predetermined area, the “number of times” in the terminal device management table 231 is incremented.

  In addition, in the “IN” state, when the position indicated by the GPS position information is out of the predetermined area, the state transits to the “LEAVE” state, and “LEAVE” is changed to “number of times” in the “state” of the terminal device management table 231. “1” is written in “LE1 time” and the current time is written.

  In the “LEAVE” state, when the position indicated by the GPS position information falls within a predetermined area, the state transits to the “IN” state, and “IN” is set to “IN” in the terminal device management table 231 and “1” is set to “1”. "Is written respectively.

  In the “LEAVE” state, if the position indicated by the GPS position information is still outside the predetermined area, the “number of times” in the terminal device management table 231 is incremented. When the “number” reaches m (m is a preset integer equal to or larger than 2), the state transits to the “OUT” state, “OUT” is displayed in the “state”, and “1” is displayed in the “number”. Written.

The “OUT” state means that the CPU 211 determines that the current position of the mobile terminal device 4 has come out of a predetermined area held in the “area ID” of the terminal apparatus management table 231. That is, once it is determined that the mobile terminal device 4 is present within the predetermined area, the mobile terminal device 4 is determined when the position indicated by the GPS position information is determined to exist outside the predetermined area for n consecutive times. It is determined that the vehicle has gone out of the predetermined area.

  In the “OUT” state, when the position indicated by the GPS position information falls within a predetermined area, the state transits to the “ARRIVE” state, “ARRIVE” is set in “State” in the terminal device management table 231, and “1” is set in “Number of times”. "Is written in" AR1 time ".

  In the “OUT” state, when the position indicated by the GPS position information continues to be outside the predetermined area, the state shifts to the “NULL” state and the contents of the terminal device management table 231 are deleted.

<Specific example of location information acquisition processing>
The contents of the position information acquisition process described above will be specifically described with reference to FIGS.

  Here, FIG. 9, FIG. 11, and FIG. 13 show three examples of the relationship between the time of the GPS position information, the inside / outside of a predetermined area, and the state, and FIG. 10, FIG. 12, and FIG. 11 is a diagram in which the positions shown in FIG. 13 are plotted inside and outside a predetermined region.

  9, 11, and 13, the numbers in the “time” column correspond to the order of the measurement times of the GPS position information from the mobile terminal device 4. Furthermore, “A”, “−”, “×” in the “Position” column indicate that the position indicated by the GPS position information is within the area A, outside the area A, and the positioning level is equal to or less than a threshold value ( It means that it is ignored (excluded from determination targets inside and outside the area) for reasons such as level 1 or lower or level 2 or lower. In other words, it is determined only when the positioning level exceeds a threshold value (exceeding level 1, ie, level 2 or higher, or exceeding level 2, ie, level 3). Further, these drawings show the case where n and m that can be set to arbitrary values of 2 or more are both 3, but n and m may be different from each other.

  In the case of FIG. 9 and FIG. 10, at time “7”, a transition is made from the “NULL” state to the “ARRIVE” state, and thereafter, the time “8”, “9” and the position indicated by the GPS position information are continuously stored twice. By determining that it is within A, the state transits to the “IN” state, and it is determined that the mobile terminal device 4 exists in the area A. In addition, by transitioning to the “LEAVE” state at time “16”, and subsequently determining that the times indicated by “17” and “18” and the position indicated by the GPS position information are outside the region A twice, The state transits to the “OUT” state, and it is determined that the mobile terminal device 4 exists outside the area A.

  In the case of FIG. 11 and FIG. 12, the transition from the “NULL” state to the “ARRIVE” state at time “2” is performed, and then the GPS position information at time “3” is ignored, time “4”, “5”, By determining that the position indicated by the GPS position information is in the area A twice in succession, it is determined that the mobile terminal device 4 is in the area A by transitioning to the “IN” state. Further, the state transits to the “LEAVE” state at time “16”, and thereafter, the GPS position information at time “17” is ignored, and the times indicated by “18” and “19” and the position indicated by the GPS position information continue twice. By determining that it is outside the area A, the state transits to the “OUT” state, and it is determined that the mobile terminal device 4 exists outside the area A.

  In the case of FIG. 13 and FIG. 14, the transition from the “NULL” state to the “ARRIVE” state at time “7”, and the position indicated by the GPS position information is in the region A twice at the next time “8”. Transition to the “IN” state. This is because the time difference between the time “8” and the time “7” is equal to or greater than a predetermined time, and it is determined that the mobile terminal device 4 has not moved during that time. When the position of time “8” is outside the area A, the state transits to the “OUT” state.

  As described above in detail, according to the embodiment of the present invention, when the position indicated by the GPS position information from the mobile terminal device 4 first enters the predetermined area, the position information acquisition server 2 continues ( n-1) When it is within the predetermined area continuously or the time until the next GPS position information is received is a predetermined time or more, and the position indicated by the GPS position information is continuously within the predetermined area. If it is, it is determined that the mobile terminal device 4 has entered the predetermined area. Compared with the case where it is determined whether or not the mobile terminal apparatus exists in the predetermined area using the GPS position information as it is. Highly accurate determination is possible.

  Accordingly, an information providing server that provides information associated with the area is provided on the network 1 in FIG. 1 and the information transmission operation of the information providing server is controlled by using the determination result in the position information acquisition server 2. Information associated with the area including the current position of the mobile terminal device 4 can be appropriately provided.

The present invention can be modified as described in the following (1) to (3).
(1) The moving speed of the mobile terminal device 4 is calculated from the two GPS position information that moves forward and backward and the time difference. When the calculated value is equal to or higher than a predetermined speed, the GPS position information received later is ignored. To do. In other words, only when the calculated value is less than the predetermined speed, the GPS position information received later is set as a determination target. This is because when the calculated value is equal to or higher than the predetermined speed, there is a high possibility that the calculated value has passed the area.
(2) The position indicated by the GPS position information transmitted from the mobile terminal device 4 coincides with a position that is known to be measured in advance when the reception state of the radio wave transmitted from the GPS satellite is bad, and the positioning level information is If a high positioning level is indicated, the GPS position information is ignored.
(3) The mobile terminal device 4 is provided with a vibration sensor, and only when it is determined that the mobile terminal device 4 is moving based on its output, the GPS receiver 44 receives GPS position information, measurement time information, and positioning. Output level information.

  DESCRIPTION OF SYMBOLS 2 ... Position information acquisition server, 4 ... Portable terminal device, 21 ... Control part, 22 ... Communication part, 23 ... Memory | storage part, 231 ... Terminal device management table.

Claims (4)

The mobile terminal is transmitted from the device, the terminal positioning information by using the measurement time information, the mobile terminal device a position information acquisition device of the portable terminal apparatus determines whether or not present in a given area,
First determination means for determining whether or not a position indicated by the terminal positioning information exists in the area;
If the position indicated by the terminal positioning information said first determination means is continuously a predetermined number of times has been determine the constant to be present within the region, it is determined that the portable terminal device is present in the region, the first first determination means, when the position indicated by the terminal positioning information continuously for the predetermined number of times is determined not to exist in the region, the determination portable terminal device a second to determine that does not exist in the region Means ,
When the first determination means determines that the position indicated by the terminal positioning information exists in the area, it writes a predetermined in-area determination state and a time at which the state transitions to the state, and the second determination means When it is determined that the mobile terminal device is present in the area, a predetermined area determination state is written, and in the predetermined area determination state, the first determination means indicates that the position indicated by the terminal positioning information is the predetermined area. When it is determined that the terminal does not exist in the predetermined area, the out-of-predetermined area determination state and the time of transition to the state are written. A position information acquisition device for a portable terminal device , comprising: a terminal device management table that writes a fixed state out of a predetermined area . In the position information acquisition device of the portable terminal device according to claim 1,
The terminal positioning information includes positioning level information indicating its accuracy,
The position information acquisition device for a portable terminal device, wherein the first determination means is a determination target only when the accuracy indicated by the positioning level information exceeds a predetermined threshold. In the position information acquisition device of the portable terminal device according to claim 1,
A speed calculating means for calculating a moving speed of the mobile terminal device based on a change in position indicated by the terminal positioning information and a time difference therebetween;
The position of the portable terminal device characterized in that the first determination means uses the changed terminal positioning information as a determination target only when the speed calculated by the speed calculation means is less than a predetermined threshold. Information acquisition device. Using the terminal positioning information and the measurement time information transmitted from the mobile terminal device, the computer of the position information acquisition device of the mobile terminal device that determines whether or not the mobile terminal device exists in a predetermined area,
First determination means for determining whether or not a position indicated by the terminal positioning information exists in the area;
If the position indicated by the terminal positioning information said first determination means is continuously a predetermined number of times has been determine the constant to be present within the region, it is determined that the portable terminal device is present in the region, the first first determination means, when the position indicated by the terminal positioning information continuously for the predetermined number of times is determined not to exist in the region, the determination portable terminal device a second to determine that does not exist in the region Means ,
When the first determination means determines that the position indicated by the terminal positioning information exists in the area, it writes a predetermined in-area determination state and a time at which the state transitions to the state, and the second determination means When it is determined that the mobile terminal device is present in the area, a predetermined area determination state is written, and in the predetermined area determination state, the first determination means indicates that the position indicated by the terminal positioning information is the predetermined area. When it is determined that the terminal does not exist in the predetermined area, the out-of-predetermined area determination state and the time of transition to the state are written. A program for causing the terminal device management table to function as a writing unit that writes the determined state outside the predetermined area to the terminal device management table .

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