JP2004221991A - Position detector, position detection system, position detection method and position detection program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To highly accurately detect the position based on position information transmitted from mobile equipment such as a portable telephone terminal. <P>SOLUTION: A position detector 1 transmits the request of the position information to respective portable telephone terminals 2 capable of communicating with a GPS 3 by using the GPS 3. At the time of receiving the request, the portable telephone terminal 2 obtains its position information from the GPS 3 and transmits it to the position detector 1 together with transmission time information. The position detector 1 calculates the distance from the position detector 1 to the portable telephone terminal 2 based on the transmission and reception time (transmission time information and reception time information) received from the portable telephone terminal 2, prepares a circle or a sphere whose center is the position information of the portable telephone terminal 2 based on the result and the position information, calculates the intersection with the sphere as its own position, maps its calculated position on a map and thus detects its own present position. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a position detecting device for detecting a position of a device existing in a place where a GPS (global positioning system) cannot be reached, and a method therefor.
[0002]
[Prior art]
In the conventional mobile device position detection method, a plurality of radio base stations for transmitting radio waves modulated with signals that can identify each radio base station are installed, and the mobile device receives radio base station radio waves. Means for identifying a reception level and a radio base station by using a radio base station; a base station information memory storing the latest estimated reception level for each radio base station; a map database of road and building information; information of a map database; Means for estimating which point on the map the maximum reception level point is from, and, when it is determined that the vehicle has passed the position immediately adjacent to the base station, the current traveling position is determined as the position of the base station position in the base station information memory. Information, and when it is determined that the vehicle has not passed through the position immediately adjacent to the base station, the distance from the point of maximum reception level to the base station is estimated, and a means for correcting the current position is provided. Has detected the position of the body device (e.g., see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-8-33036
[0004]
[Problems to be solved by the invention]
As described above, the conventional mobile object position detection method has a problem that a plurality of base stations are required and the cost is high. Further, in this prior art system, the distance from the base station and the error have a quadratic function (a cubic function when the height is included), and the current distribution state of the base stations (base station density (per fixed area per unit area)). The number of base stations)) has a problem that high-accuracy position detection cannot be expected.
To solve this problem, a mobile phone terminal located nearby provides the location information of the terminal, and a device that detects the location from the location information calculates its own location, thereby increasing the cost of the base station. Providing information by the performance of the position detection device that detects the position by enabling the detection of the self-position without the need for additional installation and the ability to adjust the number of mobile phone terminals that provide the position information There has been a demand for a position detection method capable of increasing or decreasing the number of portable telephone terminals to detect position information with higher accuracy.
[0005]
An object of the present invention is to enable a position detecting device to detect its own position information based on position information transmitted from a mobile device such as a mobile phone terminal.
[0006]
[Means for Solving the Problems]
A position detection device according to the present invention, a position information request transmission unit that transmits a request for transmission of position information of the mobile device indicating the position of the mobile device to the mobile device,
A position information receiving unit that receives the position information of the mobile device transmitted from the mobile device in response to the transmission request from the position information request transmission unit and the transmission time information at which the position information was transmitted,
A position information registration unit that registers the position information and transmission time information of the mobile device received by the position information reception unit together with the reception time information received by the position information reception unit;
A distance calculation unit that calculates the distance between the mobile device and the own device from the transmission time information and the reception time information registered by the position information registration unit,
A position calculation unit that calculates the position of the own device from the distance calculated by the distance calculation unit and the position information of the mobile device registered by the position information registration unit.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
In FIG. 1, the position detecting device 1 is a device located in a place where communication with the GPS 3 is not possible, such as an underground mall, and a mobile phone terminal is shown as an example of the position detecting device 1 in FIG. Examples of the position detection device 1 include a portable information terminal (PDA) and other mobile devices in addition to a mobile phone terminal.
The plurality of mobile phone terminals 2 are terminals located near the position detection device 1 and at positions where they can communicate with the GPS 3. The mobile phone terminal 2 is an example of a mobile device, and may be a mobile device other than the mobile information terminal as long as it has a function of updating with the GPS 3.
The GPS 3 provides position information of the plurality of mobile phone terminals 2 to each of the plurality of mobile phone terminals 2. As long as the device provides the location information to the mobile phone terminal 2, other devices other than the GPS3, such as a quasi-zenith satellite, may be used.
The position detection device 1 requests the mobile phone terminal 2 to transmit position information, and the mobile phone terminal 2 transmits its own position information to the position detection device 1 in response to the request.
[0008]
Next, the internal configuration of the position detection device 1 and the mobile phone terminal 2 shown in FIG. 2 will be described.
The position detection device 1 includes a position information request transmission unit 12, a position information reception unit 13, a position information registration unit 14, a distance calculation unit 15, a position calculation unit 16, a position identification unit 11, an information acquisition unit 17, and a database 31. ing. The database 31 may be stored in any storage medium outside the position detection device 1.
The position information request transmission unit 12 is a unit that transmits a request for transmission of position information of the mobile device (mobile phone terminal 2) to the mobile device (mobile phone terminal 2).
The location information receiving unit 13 transmits the location information and the location information of the mobile device (mobile phone terminal 2) transmitted from the mobile device (mobile phone terminal 2) in response to the transmission request from the location information request transmission unit 12. And a transmission time information.
The position information registration unit 14 registers the position information and the transmission time information of the mobile device (mobile phone terminal 2) received by the position information reception unit 13 together with the reception time information at which the position information reception unit 13 receives the information. It is a part to do.
The distance calculation unit 15 is a unit that calculates the distance between the mobile device (the mobile phone terminal 2) and the own device (the position detection device 1) from the transmission time information and the reception time information registered by the position information registration unit 14. .
The position calculation unit 16 calculates the position of the own device (the position detection device 1) from the distance calculated by the distance calculation unit 15 and the position information of the mobile device (mobile phone terminal 2) registered by the position information registration unit 14. Department.
[0009]
The database 31 is at least one of a two-dimensional map having position information in the longitude direction and position information in the latitude direction, or a three-dimensional map having position information in the longitude direction, position information in the latitude direction, and position information in the altitude direction. I remember.
In addition, the database 31 stores a two-dimensional map having position information in the longitude direction and position information in the latitude direction and information on an area specified from the position information, or position information in the longitude direction, position information in the latitude direction, and altitude. At least one of a three-dimensional map having information on an area specified from the position information together with the position information on the direction may be stored.
The position identification unit 11 is configured to detect the position of the own device (position detection) on at least one of the two-dimensional map and the three-dimensional map stored in the database 31 based on the position information of the own device (position detection device 1) calculated by the position calculation unit 16. This unit specifies the position of the device 1).
The information acquisition unit 17 is a unit that acquires, from the database 31, information on an area included in a certain range from the position of the own device (the position detection device 1) on the map identified by the position identification unit 11.
[0010]
The mobile phone terminal 2, which is a mobile device that can be updated with the GPS 3, includes a position information request receiving unit 21, a position information detecting unit 22, and a position information transmitting unit 23.
The position information request receiving unit 21 is a unit that receives a transmission request from the position information request transmitting unit 12.
The position information detection unit 22 is a unit that detects the position information of its own device (mobile phone terminal 2) from the GPS 3 in response to the transmission request received by the position information request reception unit 21.
The position information transmitting unit 23 is a unit that transmits the position information together with the transmission time information for transmitting the position information of the own device (mobile phone terminal 2) detected by the position information detecting unit 22.
[0011]
As described above, the position detection device 1 requests transmission of the position information to the mobile phone terminal 2 which is present near the own device and can communicate with the GPS 3. Although the number of the mobile phone terminals 2 requesting the position information may be one, in order to calculate the position of the own device with high accuracy, the position information is requested from three or more different mobile phone terminals 2. Is preferred.
[0012]
Next, the operations of the position detection device 1 and the mobile phone 2 will be described with reference to the flowchart of FIG.
The left side of FIG. 3 shows the operation of the position detection device 1 and the right side shows the operation of each terminal of the plurality of mobile phone terminals 2.
The position information request transmission unit 12 of the position detection device 1 requests each of the mobile phone terminals 2 to broadcast position information and transmission time information using the GPS 3 (S101). Here, the request count is set to 0 as an initial value (S100).
Upon receiving the request from the position detecting device 1 (S200), the position information request receiving unit 21 of the mobile phone terminal 2 checks whether communication with the GPS 3 is possible (S201). Return to the initial state.
When communication with the GPS is possible, the position information detecting unit 22 obtains its own position information from the GPS 3 (S202), and the position information transmitting unit 23 transmits the position information and the transmission time information indicating the transmission time to the position detecting device 1. Are transmitted together (S203), and the process ends.
[0013]
The position information receiving unit 13 of the position detecting device 1 receives the position information and the transmission time information from the mobile phone terminal 2 (S103).
The position information registration unit 14 registers the received position information, transmission time information, and reception time information at which the position information reception unit 13 has received the position information on the storage device (S104). As the storage device, the database 31 may be used, or another storage medium such as a magnetic disk device may be used.
The position information receiving unit 13 receives the position information from the mobile phone terminal 2 for the preset number of position information (predetermined number or more), and the position information registration unit 14 sets the preset number of position information (prescribed number). (More than number). Here, as for the preset number of position information, the more the number is, the more accurate the position can be calculated. However, since the time required for the calculation increases with the amount of information, the position information is set according to the performance and situation of the position detecting device 1. Is done.
[0014]
Even if the location information request is made (S101), if the location information is not transmitted from the mobile phone terminal 2 within a predetermined time (S102), the number of requests is incremented by 1 (S108). Requests are issued again until the number of requests becomes equal to or greater than a predetermined value (S109, S101). If the position information does not come even after repeating this several times (the predetermined value number), it is determined whether a specified number of position information has been received (S110). Here, when the self-position on the plane is specified by the position information in the longitude direction (horizontal coordinate: longitude) and the position information in the latitude direction (vertical coordinate: latitude), the specified number including the time information is three. Become. In addition, the position information in the longitude direction (horizontal coordinate: longitude), the position information in the latitude direction (vertical coordinate: latitude), and the position information in the altitude direction (height coordinate: altitude) include three-dimensional data including height. In the case of specifying the self-position, the prescribed number including the time information is four.
As a result of the determination in S110, if the specified number has reached the minimum (3 or 4) reception number, the mobile phone terminal 2 to which the distance calculation unit 15 has transmitted the position information based on the position information and the position The distance to the detection device 1 is calculated, and the position calculation unit 16 calculates the own position of the position detection device 1 from the distance calculated by the distance calculation unit 15 and the position information of the mobile phone terminal 2 registered by the position information registration unit 14. Is calculated (S106).
[0015]
Here, the distance calculation performed by the distance calculation unit 15 assumes a two-dimensional map having position information in the longitude direction (horizontal coordinate X: longitude) and position information in the latitude direction (vertical coordinate Y: latitude). When specifying the position of the own device on the assumed two-dimensional map, the position information including the vertical coordinate X (latitude) and the horizontal coordinate Y (longitude) and the difference between the transmission time and the reception time are used. Since the time T required for transmission and reception is a variable, at least three pieces of position information of (F (X, Y, T)) are required. Therefore, three different pieces of position information or the like may be received from one mobile phone terminal 2 in order to obtain the specified number of three pieces of position information. Receiving is preferable because the calculation of the position of the position detection device 1 can be performed with high accuracy.
Similarly, three-dimensional information having position information in the longitude direction (horizontal coordinate X: longitude), position information in the latitude direction (vertical coordinate Y: latitude), and position information in the altitude direction (height coordinate Z: altitude) When a map is assumed and the position of the own device on the assumed three-dimensional map is specified, it is composed of a vertical coordinate X (latitude), a horizontal coordinate Y (longitude), and a height coordinate Z (altitude). Since the time T required for transmission and reception, which is represented by the difference between the position information and the transmission time and the reception time, is a variable (F (X, Y, Z, T)), at least four position information numbers are required. Become. Therefore, it is necessary to receive four different position information from the mobile phone terminal 2.
[0016]
The distance calculating unit 15 transmits the position information from the own device (the position detecting device 1) based on the transmission time information and the reception time information of each mobile phone terminal 2 registered by the position information registration unit 14. And a circle centered on the position where the mobile phone terminal 2 is located indicated by the position information based on the calculation result and the position information transmitted from the mobile phone terminal 2 and registered by the position information registration unit 14. Or create a sphere.
The position calculation unit 16 calculates the intersection of a plurality of circles or spheres created from the plurality of pieces of position information as the own position of the own device (the position detection device 1), and maps the position to a map by the position identification unit 11 described later. To detect the current self-position. Here, when the self-position is specified from the position information in the longitude direction (horizontal coordinate X: longitude) and the position information in the latitude direction (vertical coordinate Y: latitude), the position where the mobile phone terminal 2 exists is determined. Create a circle as the center. On the other hand, the own position is specified from the position information in the longitudinal direction (horizontal coordinate X: longitude), the position information in the latitude direction (vertical coordinate Y: latitude), and the position information in the altitude direction (height coordinate: altitude). In this case, a sphere is created with the position where the mobile phone terminal 2 exists as the center.
[0017]
FIGS. 4 and 5 show image diagrams in which the position detection device 1 is present at a place where a circle or a sphere centering on the mobile phone terminal 2 intersects.
FIG. 4 is an image diagram when the height (altitude) is viewed as 0, and FIG. 5 is an image diagram when the vertical (latitude) is viewed as 0. That is, the position on the planar map is detected by the coordinates of the vertical (latitude) and the horizontal (longitude), and the height of the self-position (N meters underground or above ground: N is an arbitrary number) ) Can be detected.
[0018]
The position specifying unit 11 uses the position of the own device (the position detecting device 1) on at least one of the two-dimensional map and the three-dimensional map stored in the database 31 from the position of the own device (the position detecting device 1) calculated by the position calculating unit 16. The position of 1) is specified and mapped to a map (S107).
The information acquisition unit 17 acquires from the database 31 information on an area included in a certain range from the position of the own device (the position detection device 1) on the map identified by the position identification unit 11. The information on the area includes information on buildings such as restaurants and hospitals, traffic information such as traffic congestion, vacant information such as parking lots, and traffic information on the shortest station etc. within a certain distance from the position of the own device (position detecting device 1). Includes all information that can be provided as contents, such as institutional information and weather information.
On the other hand, if the result of determination in S110 is that the prescribed number has not reached the minimum (3 or 4) reception number, the process ends.
[0019]
As described above, the mobile phone terminal (position detecting device 1) capable of calculating its own position even in an underground shopping mall or the like where GPS radio waves do not reach, acquires its own position information by communicating with GPS, and obtains position information and time information (transmission time information). And a mobile phone terminal 2 transmitting the mobile phone terminal to the mobile phone terminal (position detection device 1).
The mobile phone terminal (position detection device 1) sends a request for transmission of position information of the mobile device (mobile phone terminal 2) indicating the position of the mobile device (mobile phone terminal 2) to the mobile device (mobile phone terminal 2). And a location information of the mobile device (mobile phone terminal 2) transmitted from the mobile device (mobile phone terminal 2) in response to the transmission request from the location information request transmission unit 12. A position information receiving unit 13 that receives the transmission time information at which the position information was transmitted, and a position information receiving unit that transmits the position information and the transmission time information of the mobile device (mobile phone terminal 2) received by the position information receiving unit 13. 13, a mobile information device (mobile phone terminal 2) and its own device (position detection device) based on the location information registration unit 14 registered with the reception time information received by the location information 13 and the transmission time information and reception time information registered by the location information registration unit 14. 1) Distance And the position of its own device (position detecting device 1) from the distance calculated by distance calculating unit 15 and the position information of the mobile device (mobile phone terminal 2) registered by position information registering unit 14. , A position identification unit 11 that maps the position of the own device (the position detection device 1) to a database 31 having map information, and an information acquisition unit 17 that acquires predetermined information from the database 31. ,
The mobile phone terminal 2 includes a position information request receiving unit 21 that receives a request for transmitting position information of a mobile device (mobile phone terminal 2) transmitted by the position information request transmitting unit 12, and a position information request receiving unit 21 that receives the request. The position information detecting unit 22 that detects the position information of the own device (the mobile phone terminal 2) in response to the transmitted transmission request, and the position information of the own device (the mobile phone terminal 2) that the position information detecting unit 22 detects. The position detection system including the position information transmission unit 23 that transmits the transmission time information together with the transmission time information has been described.
[0020]
Further, the position information receiving unit 13 receives position information X in the longitude direction and position information Y in the latitude direction as position information of the mobile device (mobile phone terminal 2) from the mobile device (mobile phone terminal 2), The position information registration unit 14 stores the position information X in the longitude direction of the mobile device (mobile phone terminal 2) and the position information Y in the latitude direction of the mobile device (mobile phone terminal 2) received by the position information receiving unit 13. The position calculation unit 16 registers with the transmission time information and the reception time information, and the distance calculation unit 15 calculates the distance calculated from the transmission time information and the reception time information and the mobile device (mobile phone terminal) registered by the position information registration unit 14. The position detection device 1 that calculates the position of the own device (the position detection device 1) from the position information X in the longitude direction and the position information Y in the latitude direction of the mobile device (mobile phone terminal 2) in 2) has been described.
[0021]
Further, the position information receiving unit 13 receives the position information Z in the altitude direction from the mobile device (mobile phone terminal 2) as the position information of the mobile device (mobile phone terminal 2). Further, the position information Z in the altitude direction of the mobile device (mobile phone terminal 2) received by the position information receiving unit 13 is combined with the position information X in the longitudinal direction of the mobile device (mobile phone terminal 2) and the mobile device (mobile phone). The position information is registered together with the position information Y in the latitude direction of the terminal 2), and the position calculation unit 16 registers the distance calculated by the distance calculation unit from the transmission time information and the reception time information and the mobile device (mobile phone) registered by the position information registration unit 14. The position information X in the longitude direction of the telephone terminal 2), the position information Y in the latitude direction of the mobile device (mobile phone terminal 2), and the position information Z in the altitude direction of the mobile device (mobile phone terminal 2). Calculate the position of the position detection device 1) It has been described position detecting device 1 that.
[0022]
As described above, in the invention according to the present embodiment, in order to obtain position information from mobile phone terminal 2 that can communicate with nearby GPS 3, a base station (or a structure equivalent thereto) that provides position information is newly added. It is not necessary to install it in the office, and at present, there is no mobile phone around you in your place of life. Assuming that at least half or more of the people around me have a mobile phone terminal, there are always a plurality of mobile phone terminals 2 that provide location information. Therefore, even when there is a person who has the position detecting device 1 such as a mobile phone terminal in an underground shopping mall or the like where communication with the GPS 3 is not possible, if the above-described position detecting method is used, the holder can perform highly accurate self (position detecting device 1). This has the effect that the position information can be obtained.
[0023]
Further, as described above, the position information request transmission unit 12 of the position detection device 1 transmits a request for transmitting position information of the mobile device (mobile phone terminal 2) to a plurality of mobile devices (mobile phone terminals 2) under a predetermined condition. ), And the position information receiving unit 13 transmits three or more mobile devices (mobile phones) transmitted from the plurality of mobile devices (mobile phone terminals 2) in response to the transmission request from the position information request transmitting unit 12. The position information registration unit 14 receives the position information of the terminal 2) and the three or more transmission time information at which the position information was transmitted, and the three or more mobile devices (the mobile phone terminal 2) received by the position information reception unit 13. ) And three or more transmission time information are registered together with the three or more reception time information received by the position information receiving unit 13, and the distance calculation unit 15 stores the three or more transmission time information registered by the position information registration unit 14. Information and three or more reception time information , The distance between the mobile device (mobile phone terminal 2) and the own device (position detection device 1) is calculated, and the position calculation unit 16 calculates the distance calculated by the distance calculation unit 15 and the 3 registered by the position information registration unit 14. The position of the own device (position detecting device 1) is calculated from the position information of the mobile device (mobile phone terminal 2) described above. As described above, the number of position information (prescribed number) for position detection can be set according to the performance and status of the position detection device 1 such as a mobile phone terminal. Therefore, a position detection method suitable for the position detection device 1 such as a mobile phone terminal. There is an effect that can be provided.
[0024]
Embodiment 2 FIG.
In the first embodiment, all the position information is obtained from nearby mobile phone terminals 2. However, the position information may be received from the nearest base station. In this case, since the base station is a fixed station and does not move, its position information is more reliable than the position information of the mobile phone terminal 2, so that the position detecting device 1 can specify its own position with higher accuracy.
[0025]
FIG. 6 is a diagram showing a system configuration according to the second embodiment.
The configuration different from the system configuration of the first embodiment is that a base station 4 is added as a device for providing location information in addition to the mobile phone terminal 2. An example of the base station 4 is a mobile phone server. Although not shown, the base station 4 includes a position information request receiving unit, a position information detecting unit, and a position information transmitting unit, like the mobile phone terminal 2. Other configurations and operations are the same as those in the first embodiment, and thus description thereof will be omitted.
[0026]
FIG. 7 shows an operation flow of the second embodiment.
Operations (S300, S301, S400 to S404, S303, and S304) from the position information request to the position information reception and registration are the same as those in the first embodiment, and thus description thereof will be omitted.
Upon receiving the position information, the position information receiving unit 13 checks whether the set number of position information from the mobile phone terminal 2 has reached the specified number and whether or not the position information from the base station 4 has been obtained (S305). ).
If both are satisfied, the process proceeds to the next processing (S306, S307). The processes of S306 and S307 are the same as those of S106 and S107 described in the first embodiment except that the distance calculation unit 15 calculates the distance between the base station 4 and the own device together with the distance between the mobile phone terminal 2 and the own device. Since the processing is the same as that described above, the description is omitted.
[0027]
On the other hand, if at least one of the requirements of S305 is not satisfied (S302), the number of requests is incremented by 1 (S308), and a request for position information is transmitted until the number of requests becomes equal to or greater than a predetermined value (S309) (S309). S301). In particular, when the position information from the base station 4 does not come within the specified time, a request for the position information is transmitted to the base station 4 (S301).
If the information from the base station 4 does not come even after repeating this several times, the request to the base station 4 is terminated, and if the position information from the mobile phone terminal 2 satisfies the specified number (S310). ), The position detection work in S306 and S307 is performed using only the position information from the mobile phone terminal 2.
If the position information from the mobile phone terminal 2 is not enough (S310), the process ends as in the first embodiment.
[0028]
In the present embodiment, the distance calculation unit 15 calculates the distance from the position detection device 1 to the base station 4 using the information from the highly reliable base station 4. If the distance is calculated from the information from the mobile phone terminal 2 and contradicts the distance calculated from the information from the base station 4, the information from the base station 4 is adopted. Here, the contradiction between the distance calculated from the information transmitted from the base station 4 and the distance calculated from the information transmitted from the mobile phone terminal 2 means that the distance between the mobile phone terminal 2 and the own device is equal to the base station 4 and the own device. There are cases where the distance is too short compared to the distance to the device.
[0029]
As described above, a mobile phone server (base station 4) that communicates with a mobile phone terminal (position detection device 1) is provided. This base station 4 includes a position information request receiving unit, a position information detecting unit, and a position information transmitting unit. The mobile phone terminal (position detection device 1) has further described the position detection system in which the distance calculation unit 15 calculates the distance between the base station 4 and its own device (position detection device 1).
[0030]
Further, the position information request transmitting unit 12 transmits a request for transmitting the position information of the base station 4 indicating the position of the base station 4 to the base station 4, and the position information receiving unit 13 transmits the request from the position information request transmitting unit 12. The position information registration unit 14 receives the position information of the base station 4 transmitted from the base station 4 in response to the request and the transmission time information at which the position information was transmitted. The position information and the transmission time information are registered together with the reception time information received by the position information receiving unit 13, and the distance calculation unit 15 calculates the base station 4 from the transmission time information and the reception time information registered by the position information registration unit 14. The distance calculation unit 16 calculates the distance between the mobile device (mobile phone terminal 2) and the own device (position detection device 1) calculated by the distance calculation unit 15. Or the base station 4 and its own device (position detection device). 1), the location information of the mobile device (mobile phone terminal 2) registered by the location information registration unit 14 and / or the location information of the base station 4 and the location information of the own apparatus (position detection apparatus 1). The position detection device 1 that calculates the position has been described. However, in the position detection device 1 of the present embodiment, when the position information of the base station 4 and the position information of the mobile phone terminal 2 conflict, the position information of the base station 4 is preferentially adopted. Therefore, there is an effect that it is possible to detect position information with higher accuracy.
[0031]
FIG. 8 is a basic configuration diagram of a computer of the position detection device 1.
8, a CPU 40 that executes a program is connected to a monitor 41, a keyboard 42, a mouse 43, a communication port 44, a magnetic disk device 46, and the like via a bus 38.
The magnetic disk device 46 stores an OS 47, a program group 49, and a file group 50. However, an embodiment in which the program group 49 and the file group 50 are integrated to form the object-oriented program group 49 is also considered as one embodiment.
The program group 49 stores programs for executing the operations of the distance calculation unit 15 and the position calculation unit 16. The programs are executed by the CPU 40 and the OS 47, and thereby the mobile phone terminal 2 and the position detection device 1 are executed. Is calculated with respect to the distance and the position.
In each of the above embodiments, the position information request transmission unit 12 and the position information reception unit 13 of the position detection device 1 perform transmission and reception with the mobile phone terminal 2 using the function of the communication port 44.
Further, the terms “store”, “register”, and “store” described above mean to store in a recording medium.
[0032]
In all embodiments, each operation of each component is related to each other, and the operation of each component can be replaced as a series of operations while taking into account the relation of the operations described above. Then, by substituting in this way, an embodiment of the method invention can be obtained.
Further, by replacing the operation of each of the above components with the processing of each of the components, an embodiment of a program can be realized.
In addition, by storing the program on a computer-readable recording medium on which the program is recorded, an embodiment of the computer-readable recording medium on which the program is recorded can be provided.
[0033]
The embodiment of the program and the embodiment of the computer-readable recording medium recorded in the program can all be constituted by a computer-operable program.
Each process in the embodiment of the program and the embodiment of the computer-readable recording medium on which the program is recorded is executed by the program, and the program is recorded in the recording device, and is transmitted from the recording device to the central processing unit ( CPU) and each flowchart is executed by the central processing unit.
Also, the software and programs of each embodiment may be implemented by firmware stored in a ROM (READ ONLY MEMORY). Alternatively, each function of the above-described program may be realized by a combination of software, firmware, and hardware.
[0034]
【The invention's effect】
According to the present invention, the position detecting device can detect the position information based on the position information transmitted from the mobile device.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram according to a first embodiment of the present invention.
FIG. 2 is an internal configuration diagram of the first embodiment of the present invention.
FIG. 3 is a flowchart according to the first embodiment of the present invention.
FIG. 4 is a plan image diagram of a position detection method according to the first embodiment of the present invention.
FIG. 5 is an elevation image diagram of the position detection method according to the first embodiment of the present invention.
FIG. 6 is a system configuration diagram according to a second embodiment of the present invention.
FIG. 7 is a flowchart according to a second embodiment of the present invention.
FIG. 8 is a computer basic configuration diagram of the position detection device.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 position detecting device, 2 mobile phone terminal, 3 GPS, 4 base stations, 11 position specifying unit, 12 position information request transmitting unit, 13 position information receiving unit, 14 position information registering unit, 15 distance calculating unit, 16 position calculating unit , 17 information obtaining unit, 31 database, 21 position information request receiving unit, 22 position information detecting unit, 23 position information transmitting unit, 38 bus, 40 CPU, 41 monitor, 42 keyboard, 43 mouse, 44 communication port, 46 magnetic disk Device, 47 OS, 49 programs, 50 files.

Claims (11)

A position information request transmission unit that transmits a request for transmission of position information of the mobile device indicating the position of the mobile device to the mobile device,
A position information receiving unit that receives the position information of the mobile device transmitted from the mobile device in response to the transmission request from the position information request transmission unit and the transmission time information at which the position information was transmitted,
A position information registration unit that registers the position information and transmission time information of the mobile device received by the position information reception unit together with the reception time information received by the position information reception unit;
A distance calculation unit that calculates the distance between the mobile device and the own device from the transmission time information and the reception time information registered by the position information registration unit,
A position detection device comprising: a position calculation unit that calculates a position of the own device from the distance calculated by the distance calculation unit and position information of a mobile device registered by the position information registration unit. The position information receiving unit receives the position information in the longitude direction and the position information in the latitude direction as the position information of the mobile device from the mobile device,
The position information registration unit registers the position information in the longitude direction of the mobile device and the position information in the latitude direction of the mobile device received by the position information receiving unit along with the transmission time information and the reception time information,
The position calculation unit calculates the position of the own device from the distance calculated by the distance calculation unit, the position information in the longitude direction of the mobile device registered by the position information registration unit, and the position information in the latitude direction of the mobile device. The position detecting device according to claim 1. The position information receiving unit, as position information of the mobile device, further receives the position information in the altitude direction from the mobile device,
The position information registration unit further registers the position information in the altitude direction of the mobile device received by the position information reception unit together with the position information in the longitude direction and the position information in the latitude direction of the mobile device. ,
The position calculation unit is configured to calculate the distance calculated by the distance calculation unit, the position information in the longitude direction of the mobile device registered by the position information registration unit, the position information in the latitude direction of the mobile device, and the height direction of the mobile device. 3. The position detecting device according to claim 2, wherein the position of the own device is calculated from the position information. The position detecting device further comprises:
A database storing at least one of a two-dimensional map having longitudinal position information and latitude position information and a three-dimensional map having longitude position information, latitude position information, and altitude position information; ,
2. The apparatus according to claim 1, further comprising: a position specifying unit that specifies a position of the own device on at least one of a two-dimensional map and a three-dimensional map stored in the database from the position of the own device calculated by the position calculating unit. The described position detection device. The database is identified from a two-dimensional map having information on an area identified from the position information in the longitude direction and the position information in the latitude direction, or from the position information in the longitude direction, the position information in the latitude direction, and the position information in the altitude direction. Memorize at least one of the three-dimensional maps having information about the area
The position detecting device further comprises:
5. The position detection device according to claim 4, further comprising an information acquisition unit configured to acquire, from the database, information on an area included in a certain range from the position of the own device on the map identified by the position identification unit. The position information request transmission unit transmits a request for transmission of position information of the base station indicating the position of the base station to the base station,
The position information receiving unit receives the position information of the base station transmitted from the base station in response to the transmission request from the position information request transmission unit and the transmission time information at which the position information is transmitted,
The location information registration unit registers the location information and the transmission time information of the base station received by the location information reception unit together with the reception time information received by the location information reception unit,
The distance calculation unit calculates the distance between the base station and the own device from the transmission time information and the reception time information registered by the position information registration unit,
The position calculation unit calculates at least one of a distance between the mobile device and the own device calculated by the distance calculation unit or a distance between the base station and the own device, and a position of the mobile device registered by the position information registration unit. The position detecting device according to claim 1, wherein the position of the own device is calculated from at least one of the information and the position information of the base station. The location information request transmission unit, under a predetermined condition, repeatedly transmits a transmission request for the location information of the mobile device to a plurality of mobile devices,
The position information receiving unit is configured to transmit position information of three or more mobile devices transmitted from a plurality of mobile devices in response to a transmission request from the position information request transmission unit and three or more transmission times at which the position information was transmitted. Receiving information and
The position information registration unit registers the position information of three or more mobile devices and the three or more transmission time information received by the position information reception unit together with the three or more reception time information received by the position information reception unit. ,
The distance calculation unit calculates a distance between the mobile device and the own device from three or more transmission time information and three or more reception time information registered by the position information registration unit,
The position detection according to claim 1, wherein the position calculation unit calculates a position of the own device from the distance calculated by the distance calculation unit and position information of three or more mobile devices registered by the position information registration unit. apparatus. A position information request transmission unit that transmits a request for transmission of position information of the mobile device indicating the position of the mobile device to the mobile device,
A position information receiving unit that receives the position information of the mobile device transmitted from the mobile device in response to the transmission request from the position information request transmission unit and the transmission time information at which the position information was transmitted,
A position information registration unit that registers the position information and transmission time information of the mobile device received by the position information reception unit together with the reception time information received by the position information reception unit;
A distance calculation unit that calculates the distance between the mobile device and the own device from the transmission time information and the reception time information registered by the position information registration unit,
A position detection device including a position calculated by the distance calculation unit and a position calculation unit that calculates the position of the own device from the position information of the mobile device registered by the position information registration unit,
A position information request receiving unit that receives a transmission request for position information of the mobile device transmitted by the position information request transmitting unit,
A position information detection unit that detects the position information of the own device according to the transmission request received by the position information request reception unit,
A position detection system comprising: a mobile device including: a position information transmission unit that transmits the position information of the own device detected by the position information detection unit together with transmission time information at which the position information is transmitted. 9. The position detection system according to claim 8, wherein the position information detection unit detects the position information of the own device using a global positioning system (GPS). A request for transmitting position information of the mobile device indicating the position of the mobile device is transmitted to the mobile device,
Receiving the position information of the mobile device transmitted from the mobile device in response to the transmission request and the transmission time information at which the position information was transmitted,
Register the received position information and transmission time information of the mobile device together with the reception time information that received the position information and transmission time information of the mobile device,
Calculate the distance between the mobile device and the own device from the registered transmission time information and reception time information,
A position detection method for calculating the position of the own device from the calculated distance and the registered position information of the mobile device. A process of transmitting a request for transmitting position information of the mobile device indicating the position of the mobile device to the mobile device,
A process of receiving location information of the mobile device transmitted from the mobile device in response to the transmission request and transmission time information at which the location information is transmitted;
A process of registering the received position information and transmission time information of the mobile device with the reception time information at which the position information and the transmission time information of the mobile device are received,
A process of calculating a distance between the mobile device and the own device from the registered transmission time information and reception time information;
A position detection program for causing a computer to execute a process of calculating the position of the own device from the calculated distance and the registered position information of the mobile device.

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