JP2017152982A - Search support server, search supporting system, and search support method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more increase detection accuracy of a submission terminal of a search object.SOLUTION: A search support server 100 communicates with a mobile communication terminal 50 capable of communicating with a submission terminal 10 performing a communication by Bluetooth (R), and supports a search of the submission terminal 10. The search support server comprises: an internet communication part 101 that receives position information measured by the mobile communication terminal 50 when the mobile communication terminal 50 is positioned in a communication zone of the Bluetooth (R) of the submission terminal 10; a storage part 110 in which the position information received by the internet communication part 101 is stored; and a search execution part 124 that estimates the position of the submission terminal 10 on the basis of the position information of the plurality of mobile communication terminals 50 stored in the storage part 110.SELECTED DRAWING: Figure 14

Description

  The present invention relates to a technique for searching for a person, an object, etc. from the position of the transmitting terminal by giving the person, an object, etc. a transmitting terminal.

  In the technique disclosed in Patent Document 1, when a receiving terminal such as a mobile phone detects a search target transmitting terminal by communication based on Bluetooth (registered trademark), position information of the receiving terminal is transmitted to a server. Then, the server transmits the position information of the receiving terminal to the search requester terminal of the search requester. That is, by this, the search requester grasps the position information of the receiving terminal near the transmitting terminal as the position of the transmitting terminal.

JP2016-14966

  An object of the present invention is to increase the detection accuracy of the position of a search target transmission terminal.

  A first aspect of the present invention is a search support server that supports a search for a first terminal that performs wireless communication within a certain communication range, and is located within the communication range of the first terminal Based on the position information receiving means for receiving the position information measured by the second terminal, the storage means for storing the position information received by the position information receiving means, and the position information stored in the storage means, And a search support server having estimation means for estimating the position of the first terminal.

  In the second aspect of the present invention, the position information receiving means receives first identification information capable of identifying the second terminal together with the position information, and the storage means includes the first identification information and the first identification information. Preferably, position information is stored in association with each other, and the estimation means estimates the position of the first terminal based on the first identification information and the position information stored in the storage means.

  In the third aspect of the present invention, the storage means stores the position information and the acquisition time at which the second terminal acquires the position information in association with each other, and the estimation means is stored in the storage means. It is preferable to estimate the position of the first terminal based on the position information and the acquisition time.

  In the fourth aspect of the present invention, the location information receiving means includes, in addition to the location information transmitted by the second terminal, second identification information for identifying the first terminal, and the second terminal. It is preferable to receive first identification information for identification.

  According to a fifth aspect of the present invention, there is further provided a search request signal receiving means for receiving a search request signal of the first terminal, and the estimating means estimates the position of the first terminal when the position of the first terminal is estimated. It is preferable to compare the time when the search request signal receiving means receives the search request signal with the acquisition time of the position information associated with the first identification information.

  In a sixth aspect of the present invention, a first terminal that performs wireless communication within a certain communication range, a second terminal that can communicate with the first terminal, and a communication with the second terminal And a search support server for supporting search of the first terminal, wherein the second terminal communicates with the first terminal in the communication range by the communication with the first terminal. Detection means for detecting a terminal, positioning means for positioning the position of the second terminal, and position information transmission for transmitting position information measured by the positioning means when the detection means detects the first terminal And the search support server includes position information receiving means for receiving the position information transmitted by the transmitting means, storage means for storing the position information received by the position information receiving means, and the storage The location of the second terminal stored in the means And estimating means for estimating a position of the first terminal based on the distribution, and it is characterized in search supporting system having a.

  According to a seventh aspect of the present invention, there is provided a search support method for supporting a search for a first terminal that performs wireless communication within a certain communication range, and is located within the communication range of the first terminal. Based on the step of receiving the position information measured by the second terminal, the step of storing the position information received by the position information receiving means, and the position information stored in the storage means, And a step of estimating a position of the terminal.

  According to the first, sixth, and seventh aspects of the present invention, the search support server estimates the position of the first terminal by estimating the position of the first terminal based on the position information of the second terminal. The detection accuracy can be further increased.

  According to the second aspect of the present invention, since the search support server can identify the position information of the plurality of second terminals based on the first identification information, the position information of each of the plurality of second terminals is used. Thus, the position of the first terminal can be estimated. As a result, the search support server can further increase the estimation accuracy of the position of the first terminal.

  According to the third aspect of the present invention, the search support server includes a position information group having consecutive positions, that is, position information of the oldest acquisition time associated with the position information from each position information history. And the position of the first terminal can be estimated based on the selected position information. Thereby, the search support server can specify the position information detected at the communication limit position from the first terminal, and can estimate the position of the first terminal using the specified position information. As a result, the search support server can estimate the position of the first terminal based on the position information by using the fact that the communication limit distance is known, so that the estimation accuracy of the position of the first terminal is further increased. can do.

  According to the fourth aspect of the present invention, the search support server can process the first terminal and the second terminal in association with each other based on the first identification information and the second identification information. As a result, the search support server performs processing for estimating the position of the first terminal when the second terminal is located within the communication range of the first terminal associated with the second terminal. Therefore, the position is not estimated even when the second terminal is near the first terminal and it is not necessary to search for the first terminal. As a result, the search support server can reduce the processing load without performing unnecessary position estimation processing.

  According to the fifth aspect of the present invention, the search support server can estimate the position of the first terminal based on the position information of the second terminal after the time when the search is requested. Thereby, the search support server can estimate the position of the first terminal based on the latest position information of the second terminal. As a result, the search support server can estimate the latest position of the first terminal.

FIG. 1 is a block diagram illustrating a configuration example of a search support system. FIG. 2 shows an example in which a plurality of transmitting terminals and a plurality of portable communication terminals can communicate with each other through a short-distance wireless communication line. FIG. 3 is a block diagram illustrating a configuration example of the transmitting terminal. FIG. 4 is a block diagram illustrating a configuration example of the mobile communication terminal. FIG. 5 is a block diagram illustrating a configuration example of the processing unit. FIG. 6 is a flowchart illustrating an example of the registration process. FIG. 7 is a flowchart illustrating an example of search request processing. FIG. 8 is a flowchart illustrating an example of a calling terminal detection process. FIG. 9 is a block diagram illustrating a configuration example of the search support server. FIG. 10 is a block diagram illustrating a configuration example of a database stored in the storage unit. FIG. 11 is a diagram illustrating an example of a registration information database. FIG. 12 is a diagram illustrating an example of a search request information database. FIG. 13 is a diagram illustrating an example of a transmission terminal detection information database. FIG. 14 is a block diagram illustrating a configuration example of the processing unit. FIG. 15 is a flowchart illustrating an example of the registration information management process. FIG. 16 is a flowchart illustrating an example of search request management processing. FIG. 17 is a flowchart illustrating an example of the detection information management process. FIG. 18 is a flowchart illustrating an example of search execution processing. FIG. 19 is a diagram illustrating an example of a circle passing through three coordinate positions (x1, y1), (x2, y2), and (x3, y3). FIG. 20 is a diagram showing a series of processes in the search support system. FIG. 21 shows an example of the positions of the mobile communication terminals A, C, D detected by the mobile communication terminals A, C, D when the mobile communication terminals A, C, D enter the communication area of the calling terminal b. FIG. FIG. 22 is a diagram illustrating an example of a method for estimating the position of a transmission terminal based on position information associated with each combination of one transmission terminal ID and two different program IDs.

Embodiments of the present invention will be described with reference to the drawings.
In the present embodiment, a search support system is cited.

(Constitution)
FIG. 1 is a block diagram illustrating a configuration example of the search support system 1.
As shown in FIG. 1, the search support system 1 includes a plurality of transmission terminals 10, a plurality of mobile communication terminals 50, and a search support server 100.
Here, the mobile communication terminal 50 and the search processing server 100 can communicate with each other via the Internet line 200. Further, the plurality of transmitting terminals 10 and the plurality of portable communication terminals 50 can communicate with each other through a short-distance wireless communication line. For example, the short-range wireless communication is Bluetooth (registered trademark). Here, the Bluetooth (registered trademark) is mounted on the Bluetooth (registered trademark) with a radius of about 10 to 100 m while performing frequency hopping that divides the 2.4 GHz band into a predetermined number of frequency channels and randomly changes the frequency to be used. Enable communication between devices.

FIG. 2 shows an example in which a plurality of transmitting terminals 10 and a plurality of portable communication terminals 50 can communicate with each other through a short-range wireless communication line 300.
As shown in FIG. 2, each of the plurality of mobile communication terminals 50 can communicate with a plurality of transmission terminals 10 existing within the communication area of the short-range wireless communication line 300.

  This search support system 1 uses a short-distance wireless communication performed by a mobile communication terminal 50 and a transmission terminal 10 attached to a person or a transmission terminal 10 attached to an object, thereby requesting a search for a person or an object. At this time, the position of the transmitting terminal 10, that is, the position of a person or an object is specified. In this embodiment, the search support system 1 will be described with an example in which the position of the bicycle is specified when the transmission terminal 10 is attached to the bicycle and the bicycle is lost due to theft or the like.

FIG. 3 is a block diagram illustrating a configuration example of the transmission terminal 10.
As illustrated in FIG. 3, the transmission terminal 10 includes a power supply unit 11, a short-range wireless communication unit 12, a storage unit 13, and a processing unit 14.
The power supply unit 11 supplies driving power to each unit constituting the transmitting terminal 10. The power supply of the power supply unit 11 is, for example, a button battery. The short-range wireless communication unit 12 performs communication control in accordance with the Bluetooth (registered trademark) standard. The storage unit 13 is, for example, a ROM, a RAM, or the like. The storage unit 13 stores an identification ID of the transmission terminal 10 (hereinafter referred to as a transmission terminal ID).

  The processing unit 14 executes various processes in the transmission terminal 10. The processing unit 14 includes, for example, a microcomputer and its peripheral circuits, and includes, for example, a CPU, a ROM, a RAM, and the like. The ROM stores one or more programs. The CPU executes various processes according to one or more programs stored in the ROM. And the process part 14 performs various processes according to the various data and various programs which are memorize | stored in the memory | storage part 13, as needed.

FIG. 4 is a block diagram illustrating a configuration example of the mobile communication terminal 50.
As illustrated in FIG. 4, the mobile communication terminal 50 is, for example, a mobile phone or a smartphone, and includes an input unit 51, a display unit 52, a short-range wireless communication unit 53, an Internet communication unit 54, a storage unit 55, a positioning unit 56, And a processing unit 60.

  Here, the input unit 51 is operated by an operator to input information. The display unit 52 displays information. For example, when the mobile communication terminal 50 is a smartphone, the input unit 51 and the display unit 52 configure a touch panel. The short-range wireless communication unit 53 performs communication control in accordance with the Bluetooth (registered trademark) standard. The Internet communication unit 54 communicates with other communication devices such as a server via the Internet line 200. The storage unit 55 is an external storage such as a built-in storage or an SD card, and stores various data and various programs. The positioning unit 56 measures the position of the mobile communication terminal 50 using GPS (Global Positioning System).

  The processing unit 60 executes various processes in the mobile communication terminal 50. The processing unit 60 includes, for example, a microcomputer and its peripheral circuits, and includes, for example, a CPU, a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The ROM stores one or more programs. The CPU executes various processes according to one or more programs stored in the ROM. And the process part 60 performs various processes according to the various data and various programs which are memorize | stored in the memory | storage part 55 as needed. For example, the processing unit 60 executes processing based on information input by the input unit 51, executes processing for displaying information on the display unit 52, and communicates with the short-range wireless communication unit 53 and the Internet communication unit 54. The process which performs is performed, or the process which performs positioning by the positioning part 56 is performed.

FIG. 5 is a block diagram illustrating a configuration example of the processing unit 60.
As illustrated in FIG. 5, the processing unit 60 includes an ID registration unit 61, a search request unit 62, and a transmission terminal detection unit 63. In this embodiment, the operation of the ID registration unit 61, the search request unit 62, and the transmission terminal detection unit 63 is realized by one application program.

  Here, the ID registration unit 61 performs a registration process in which a transmission terminal ID and a unique ID of an application program (hereinafter referred to as a program ID) are associated and registered. Here, the program ID is stored in the storage unit 55 together with the application program. Since the program ID has a one-to-one relationship with the mobile communication terminal 50, it can be said that the program ID can be used to identify the mobile communication terminal 50. In addition, the search request unit 62 performs a search request process for requesting the search processing server 100 to search for the transmitting terminal 10 having the transmitting terminal ID associated with the program ID. Further, the transmitting terminal detection unit 63 detects the transmitting terminal 10 by the short-range wireless communication unit 53, and when the transmitting terminal ID of the detected transmitting terminal 10 is not associated with the program ID, A transmitting terminal detection process for transmitting the position to the search processing server 100 is performed. Details of these processes will be described below.

FIG. 6 is a flowchart illustrating an example of the registration process.
As shown in FIG. 6, first, as the processing of step S <b> 11, the ID registration unit 61 determines whether or not the program ID is associated with the transmission terminal ID. For example, when the program ID is already associated with the transmission terminal ID, the storage unit 55 stores the associated transmission terminal ID. In such a configuration, as the process of step S <b> 11, the ID registration unit 61 determines whether the associated transmission terminal ID is stored in the storage unit 55. Then, the ID registration unit 61 determines that the program ID is associated with the transmission terminal ID when the transmission terminal ID is stored in the storage unit 55. When the ID registration unit 61 determines that the program ID is not associated with the transmission terminal ID, the process proceeds to step S12.

  As the process of step S12, the ID registration unit 61 acquires a transmission terminal ID. Specifically, the ID registration unit 61 acquires the transmission terminal ID of the transmission terminal 10 having the highest reception strength among the transmission terminals 10 that can communicate with the short-range wireless communication unit 53. This process is a process of selecting one transmitting terminal 10 from the plurality of transmitting terminals 10 based on the reception strength when there are a plurality of transmitting terminals 10 within the communication area by the short-range wireless communication unit 53.

As the process of subsequent step S13, the ID registration unit 61 displays the transmission terminal ID acquired by the process of step S12 on the display unit 52.
As a process of subsequent step S <b> 14, the ID registration unit 61 determines whether or not a confirmation input is input from the user of the mobile communication terminal 50 to the input unit 51. The ID registration unit 61 proceeds to step S15 when the user of the mobile communication terminal 50 receives a confirmation input from the input unit 51.

As the process of subsequent step S15, the ID registration unit 61 stores the transmission terminal ID acquired by the process of step S12 in the storage unit 55.
As the process of subsequent step S16, the ID registration unit 61 requests input of the name of the user of the transmission terminal 10 of the transmission terminal ID acquired by the processes of step S14 and step S15. Specifically, the ID registration unit 61 displays an input window for the user's name on the display unit 52.

  In the subsequent step S17, the ID registration unit 61 determines whether or not the input of the user's name has been completed. Specifically, the ID registration unit 61 determines whether the user's name has been input to the input window and the confirmation button displayed on the display unit 52 has been pressed. When the ID registration unit 61 determines that the user input is completed, the process proceeds to step S18.

Note that a nickname of the bicycle may be input in the processing of step S16 and step S17.
As a process of subsequent step S <b> 18, the ID registration unit 61 transmits the ID registration information to the search support server 100. At this time, the ID registration unit 61 searches the ID registration information by including the calling terminal ID acquired by the process of step S12, the program ID stored in the storage unit 55, and the name of the user acquired by the process of step S17 in the ID registration information. It transmits to the support server 100.

FIG. 7 is a flowchart illustrating an example of search request processing.
As shown in FIG. 7, first, as a process of step S <b> 31, the search request unit 62 determines whether or not there is a search request for the transmission terminal 10 from the user of the mobile communication terminal 50. For example, it is determined whether or not a request for searching for the transmitting terminal 10 is input from the input unit 51 by operating the application program for searching the transmitting terminal by the user. The search request unit 62 proceeds to step S32 when determining that there is a search request for the calling terminal 10 from the user of the mobile communication terminal 50.

  As a process of step S32, the search requesting unit 62 requests input of a telephone number of a contact to be notified that the transmitting terminal 10 is found when the calling terminal 10 is found. Specifically, the search request unit 62 displays an input window for a contact telephone number on the display unit 52.

  As the process of subsequent step S33, the search request unit 62 determines whether or not the input of the contact information has been completed. Specifically, the search request unit 62 determines whether a telephone number has been input to the input window and the confirmation button displayed on the display unit 52 has been pressed. When the search request unit 62 determines that the input of the contact information has been completed, the search request unit 62 proceeds to step S34.

  The contact address may be an email address. In this case, the search request unit 62 displays the mail address input window on the display unit 52 in the process of step S33, and the confirmation button displayed on the display unit 52 after the mail address is input to the input window in the process of step S34. It is determined whether or not it has been pressed.

  As a process of subsequent step S <b> 34, the search request unit 62 transmits a search request to the search support server 100 via the Internet communication unit 54. At this time, the search request unit 62 searches for the transmission terminal ID, that is, the transmission terminal ID associated with its own program ID, the transmission time of the search request (hereinafter referred to as the search request time), and step S33. A search request (search request signal) to which the telephone number of the contact obtained by the process is added is transmitted to the search support server 100.

FIG. 8 is a flowchart illustrating an example of a calling terminal detection process.
As shown in FIG. 8, first, as a process of step S <b> 51, the transmission terminal detection unit 63 determines whether or not the transmission terminal 10 has been detected. Specifically, whether or not the transmission terminal detection unit 63 has detected the transmission terminal 10 having a transmission terminal ID that is not associated with its own program ID within the communication range of the short-range wireless communication by the short-range wireless communication unit 53. Determine. Specifically, the transmission terminal detection unit 63 has a transmission terminal ID that is different from the transmission terminal ID stored in the storage unit 55 when the transmission terminal 10 enabled to communicate by the short-range wireless communication by the short-range wireless communication unit 53. It is determined whether the terminal 10 is a calling terminal. When it is determined that the transmission terminal detection unit 63 has detected the transmission terminal 10 having the transmission terminal ID not associated with the program ID in the communication range of the short-range wireless communication by the short-range wireless communication unit 53, the process proceeds to step S52.

As a process of step S <b> 52, the transmission terminal detection unit 63 acquires the current position (longitude, latitude) of the mobile communication terminal 50 from the positioning unit 56.
As a process of subsequent step S <b> 53, the transmission terminal detection unit 63 transmits the transmission terminal detection information to the search support server 100. Here, the transmission terminal detection unit 63 detects the transmission terminal ID of the transmission terminal 10 detected in step S51, the current location information acquired by the processing of step S52, the acquisition time of the current location information, and its own program ID. It is included in the information.

  The transmitting terminal detection unit 63 detects the transmitting terminal 10 having a transmitting terminal ID that is not associated with its own program ID within the communication range of the short-range wireless communication by the short-range wireless communication unit 53 by this transmitting terminal detection process. During a period, the transmitting terminal detection information is continuously transmitted to the search support server 100. Thus, when the mobile communication terminal 50 is moving, the transmission terminal detection unit 63 detects the position information of the movement path of its own mobile communication terminal 50 from the time of detecting the transmission terminal 10 of the transmission terminal ID for the first time, so-called position. The history of information (position information group with consecutive positions) is included in the transmission terminal detection information and continuously transmitted to the search support server 100.

FIG. 9 is a block diagram illustrating a configuration example of the search support server 100.
As illustrated in FIG. 9, the search support server 100 includes an Internet communication unit 101, a storage unit 110, and a processing unit 120. Here, the Internet communication unit 101 performs communication with other communication devices such as the mobile communication terminal 50 via the Internet line 200. The storage unit 110 is an HDD or the like, and stores various data and various programs. The processing unit 120 executes various processes in the search support server 100. The processing unit 120 includes, for example, a microcomputer and its peripheral circuits, and includes, for example, a CPU, a ROM, a RAM, and the like. The ROM stores one or more programs. The CPU executes various processes according to one or more programs stored in the ROM. And the process part 120 performs various processes according to the various data and various programs which are memorize | stored in the memory | storage part 110 as needed.

FIG. 10 is a block diagram illustrating a configuration example of a database stored in the storage unit 110.
As shown in FIG. 10, the storage unit 110 stores a registration information database 111, a search request information database 112, and a transmission terminal detection information database 113.

FIG. 11 is a diagram illustrating an example of the registration information database 111.
As illustrated in FIG. 11, the registration information database 111 includes ID registration information transmitted from the mobile communication terminal 50 by the registration process. That is, the registration information database 111 includes a transmission terminal ID, a program ID, and a user name, and these information are associated with each other. If the ID registration information includes a bicycle nickname, the bicycle nickname is stored in the registration information database 111.

FIG. 12 is a diagram illustrating an example of the search request information database 112.
As shown in FIG. 12, the search request information database 112 includes information related to the search request transmitted from the mobile communication terminal 50 by the search request process. That is, the search request information database 112 includes a transmission terminal ID, a search request time, and a contact phone number, and these pieces of information are associated with each other.

FIG. 13 is a diagram illustrating an example of the transmission terminal detection information database 113.
As illustrated in FIG. 13, the transmission terminal detection information database 113 includes transmission terminal detection information transmitted from the mobile communication terminal 50 by the transmission terminal detection process. That is, the transmission terminal detection information database 113 includes a program ID, a transmission terminal ID, location information, and location information acquisition time, and these information are associated with each other.

FIG. 14 is a block diagram illustrating a configuration example of the processing unit 120.
As illustrated in FIG. 14, the processing unit 120 includes a registration information management unit 121, a search request management unit 122, a detection information management unit 123, and a search execution unit 124.
Here, the registration information management unit 121 uses the registration information database 111 to perform registration information management processing for managing registration information such as a transmission terminal ID and a program ID. Further, the search request management unit 122 uses the search request information database 112 to perform search request management processing for managing search requests. In addition, the detection information management unit 123 uses the transmission terminal detection information database 113 to perform detection information management processing for managing transmission terminal detection information such as location information of the transmission terminal 10. Moreover, the search execution part 124 performs the search execution process which performs a search, when there exists a search request | requirement. Details of these processes will be described below.

FIG. 15 is a flowchart illustrating an example of the registration information management process.
As shown in FIG. 15, first, as a process of step S <b> 71, the registration information management unit 121 determines whether or not ID registration information has been received from the mobile communication terminal 50. When the registration information management unit 121 determines that the ID registration information is received from the mobile communication terminal 50, the process proceeds to step S72.

As the process of step S72, the registration information management unit 121 stores the transmission terminal ID, the program ID, and the user name included in the ID registration information received by the process of step S71 in the registration information database 111.
As a result of the above registration information management processing, as shown in FIG. 1, in the search support system 1, the mobile communication terminal 100 and the transmission terminal 10 are paired with the users 1000a, 1000b, 1000c,. It becomes corresponded.

FIG. 16 is a flowchart illustrating an example of search request management processing.
As shown in FIG. 16, first, as a process of step S <b> 91, the search request management unit 122 determines whether a search request is received from the mobile communication terminal 50. When the search request management unit 122 determines that a search request has been received from the mobile communication terminal 50, the search request management unit 122 proceeds to step S92.

As the process of step S92, the search request management unit 122 causes the search request information database 112 to store the calling terminal ID, the search request time, and the contact phone number included in the search request received by the process of step S91. .
FIG. 17 is a flowchart illustrating an example of the detection information management process.
As shown in FIG. 17, first, as a process of step S <b> 111, the detection information management unit 123 determines whether or not the transmission terminal detection information has been received from the mobile communication terminal 50. When the detection information management unit 123 receives the transmission terminal detection information from the mobile communication terminal 50, the detection information management unit 123 proceeds to step S112.

  As the process of step S112, the detection information management unit 123 sets the program ID, the transmission terminal ID, the position information, and the acquisition time of the position information included in the transmission terminal detection information received by the process of step S111 as the transmission terminal detection information. Store in database 113.

FIG. 18 is a flowchart illustrating an example of search execution processing.
As shown in FIG. 18, first, as a process of step S <b> 131, the search execution unit 124 determines whether or not a search target transmission terminal ID is stored in the search request information database 112. When the search execution unit 124 determines that the search target transmission terminal ID is stored in the search request information database 112, the search execution unit 124 proceeds to step S132.

As a process of step S132, the search execution unit 124 acquires the transmission terminal ID from the search request information database 112.
As the processing of the subsequent step S133, the search execution unit 124 determines whether or not there is any one that satisfies the preset requirements for the combination of the transmission terminal ID and the program ID acquired in step S132 in the transmission terminal detection information database 113. Determine whether. Here, the requirement set in advance is a combination of one transmission terminal ID acquired by the process of step S132 and three different program IDs, and acquisition of position information associated with the combination. The time is later than the search request time associated with the transmission terminal ID in the search request information database 112.

  The search execution unit 124 proceeds to step S134 when it is determined in the transmission terminal detection information database 113 that there is a combination of the transmission terminal ID and the program ID acquired in step S132 that satisfies a preset requirement. . On the other hand, the search execution part 124 performs the process of step S131 again at other times.

  As the process of step S134, the search execution unit 124 uses each position information of each combination of one transmission terminal ID and three program IDs determined to satisfy the requirements set in advance by the process of step S133. The position information of the oldest time is acquired from the position information continuous in time series for each combination. As a result, the search execution unit 124 acquires three pieces of position information for each combination.

  That is, the search execution unit 124 is position information associated with each combination of one transmission terminal ID and three different program IDs acquired by the process of step S132 by the processes of step S133 and step S134. The position information acquisition time is later than the search request time associated with the transmission terminal ID, and the combination (three combinations) of the position information that is continuous in time series is the most. Each position information (three position information) at the old time is acquired.

  For the same program ID, when there are a plurality of different time-series position information (position information group), that is, position information groups with consecutive positions, the one with the latest acquisition time of the position information is selected, The above processing is performed on the selected item.

  In the subsequent process of step S135, the search execution unit 124 calculates (estimates) the position of the search target transmission terminal 10 based on the three pieces of position information acquired by the process of step S134. Specifically, the search execution unit 124 sets the coordinate positions (x1, y1), (x2, y2), and (x3, y3) as the three positions acquired by the process of step S134. The center position (x0, y0) of the circle passing through is calculated using the following equations (1) and (2). In other words, the search execution unit 124 calculates the center position (x0, y0) of the circumscribed circle of the triangle having each coordinate position as each vertex using the following expressions (1) and (2).

  x0 = (y1y2 ^ 2-y1y3 ^ 2 + y2y3 ^ 2 + y1x2 ^ 2-y1x3 ^ 2 + y2x3 ^ 2-y1 ^ 2y2 + y1 ^ 2y3-y2 ^ 2y3-y2x1 ^ 2 + y3x1 ^ 2-y3x2 ^ 2) / 2 {y1 (x2-x3) + Y2 (x3-x1) + y3 (x1-x2)} (1)

y0 = (x1x2 ^ 2-x1x3 ^ 2 + x2x3 ^ 2 + x1y2 ^ 2-x1y3 ^ 2 + x2y3 ^ 2-x1 ^ 2x2 + x1 ^ 2x3-x2 ^ 2x3-x2y1 ^ 2 + x3y1 ^ 2-x3y2 ^ 2) / 2 {x1 (y2-y3) + X2 (y3-y1) + x3 (y1-y2)} (2)
Here, ^ 2 means square.

Further, the equations (1) and (2) can solve the simultaneous equations of the following equations (3), (4), and (5).
(X1-x0) ^ 2 + (y1-y0) ^ 2 = r ^ 2 (3)
(X2-x0) ^ 2 + (y2-y0) ^ 2 = r ^ 2 (4)
(X3-x0) ^ 2 + (y3-y0) ^ 2 = r ^ 2 (5)
Here, r is the radius of the circle. In the present embodiment, r corresponds to a communicable distance for short-range wireless communication.

FIG. 19 is a diagram illustrating an example of a circle passing through three coordinate positions (x1, y1), (x2, y2), and (x3, y3).
As shown in FIG. 19, when three coordinate positions (x1, y1), (x2, y2), (x3, y3) are obtained, the three coordinate positions (x1, y1), (x2, y2) ), (X3, y3) are substituted into the above equations (1) and (2) to calculate the center position (x0, y0). The broken line in the figure is a triangle inscribed in a circle centered at the coordinate position (x0, y0) and having each coordinate position (x1, y1), (x2, y2), (x3, y3) at each vertex. Indicates.

  In the subsequent process of step S136, the search execution unit 124 transmits the center position calculated by the process of step S135 as the position of the transmission terminal 10 to be searched to the mobile communication terminal 50 of the requester who has requested the search. Here, the mobile communication terminal 50 that transmits the position of the transmission terminal 10 to be searched corresponds to the transmission terminal ID that is determined to be stored in the search request information database 112 in the registration information database 111 by the process of step S131. This is the mobile communication terminal 50 in which the attached program ID is stored.

  And the search execution part 124 performs again from the process of step S131. That is, the search execution unit 124 performs the processing from step S132 to step S136 for all search target transmission terminal IDs stored in the search request information database 112.

  Note that it is preferable to delete from the search request information database 112 the search target transmission terminal ID for which the search has been completed by a report from the search requester and the information associated therewith.

(Operation, action, etc.)
FIG. 20 is a diagram illustrating a series of processes in the search support system 1. Hereinafter, an example of operations and actions in the search support system 1 will be described with reference to FIG. In this example, the transmission terminal b (transmission terminal ID = b) is a search target, and the mobile communication terminal A (program ID = A), the mobile communication terminal C (program ID = C), and the mobile communication terminal D (program). ID = D) is an example of detecting the calling terminal b.

  First, in the mobile communication terminal B (program ID = B), the ID registration unit 61 acquires the transmission terminal ID of the transmission terminal b in the communication area of the short-range wireless communication by the registration process (step S201). Then, the ID registration unit 61 stores the acquired transmission terminal ID in the storage unit 13 by registration processing, and also stores ID registration information (transmission terminal ID (transmission terminal ID = b), program ID (program ID = B), (Including the user's name) is transmitted to the search support server 100 (step S202). For example, this registration process is performed by registering the transmission terminal 10 attached to the bicycle when the user purchases the bicycle.

  In the search support server 100, when the registration information management unit 121 receives the ID registration information from the mobile communication terminal B through the registration information management process, the transmission terminal ID, the program ID, and the user ID included in the ID registration information are received. The name is stored in the registration information database 111.

  Thereafter, when a bicycle equipped with the transmission terminal b is missing, when the user requests a search from the mobile communication terminal B, the mobile communication terminal B uses the search request unit 62 to search for A search request (including the transmission terminal ID, the search request time, and the telephone number of the user's contact address) is transmitted to the search support server 100 (step S203).

  In the search support server 100, when the search request management unit 122 receives a search request from the mobile communication terminal B by the search request management process, the calling terminal ID, the search request time, and the contact phone number included in the search request The number is stored in the search request information database 112.

  On the other hand, in the mobile communication terminal A, the transmission terminal detection unit 63 is associated with the program ID stored in the storage unit 110 of the mobile communication terminal A within the communication range of the short-range wireless communication by the transmission terminal detection process. When the transmitting terminal 10 having no transmitting terminal ID (transmitting terminal ID = b) is detected (step S204), the current position of the mobile communication terminal A is acquired. Then, the transmission terminal detection unit 63 performs the transmission terminal detection processing (transmission terminal ID (transmission terminal ID = b), current location information, acquisition time of current location information, program ID (program ID = A)) by the transmission terminal detection process. Is transmitted to the search support server 100 (step S205).

  Similarly, in the mobile communication terminal C, the transmission terminal detection unit 63 associates with the program ID stored in the storage unit 110 of the mobile communication terminal C within the communication range of the short-range wireless communication by the transmission terminal detection process. When the transmitting terminal 10 of the transmitting terminal ID (transmitting terminal ID = b) that has not been detected is detected (step S206), the current position of the mobile communication terminal C is acquired. Then, the transmission terminal detection unit 63 performs the transmission terminal detection information (transmission terminal ID (transmission terminal ID = b), current position information, acquisition time of current position information, program ID (program ID = C)) by the transmission terminal detection process. Are transmitted to the search support server 100 (step S207).

  Further, similarly in the mobile communication terminal D, the transmission terminal detection unit 63 associates with the program ID stored in the storage unit 110 of the mobile communication terminal D within the communication range of short-range wireless communication by the transmission terminal detection process. When the transmitting terminal 10 of the transmitting terminal ID (transmitting terminal ID = b) that has not been detected is detected (step S208), the current position of the mobile communication terminal D is acquired. Then, the transmission terminal detection unit 63 performs transmission terminal detection processing (transmission terminal detection information (transmission terminal ID (transmission terminal ID = b), current position information, acquisition time of current position information, program ID (program ID = D)). Are transmitted to the search support server 100 (step S209).

  In the search support server 100, when the detection information management unit 123 receives the transmission terminal detection information from the mobile communication terminals A, C, and D by the detection information management process, the program ID included in each transmission terminal detection information, The transmission terminal ID, location information, and the acquisition time of the location information are stored in the transmission terminal detection information database 113. For example, as shown in the example of FIG. 13, the program ID, the transmission terminal ID, the position information, and the acquisition time of the position information included in each transmission terminal detection information of the mobile communication terminals A, C, and D are the transmission terminals. It is stored in the detection information database 113.

  And in the search support server 100, the search execution part 124 performs a search execution process as a parallel process of a search request management process and a transmission terminal detection process. When the search execution unit 124 can calculate (estimate) the position of the transmission terminal b to be searched based on the position information of the mobile communication terminals A, C, and D by the search execution process, the search execution unit 124 uses the position information as the transmission terminal b. It transmits to portable communication terminal B (program ID = B) associated with (transmission terminal ID = b) (step S210).

Here, the position of the transmitting terminal b to be searched is calculated as follows.
The search execution unit 124 obtains the position information of the oldest time from the position information (position information continuous in time series) associated with each combination of one transmission terminal ID and three different program IDs. Yes. In the example shown in FIG. 13, for program ID = A, the position information of the acquisition time “2016.2.1 12:54:48” is acquired. For program ID = C, the position information of the acquisition time “2016.2.1 14:23:11” is acquired. For program ID = D, the position information of the acquisition time “2016.2.1 11:31:14” is acquired. As a result, the search execution unit 124 first detects each mobile communication terminal A, C, D (each mobile communication terminal 50 storing the program ID) within the communication range of the search source terminal b. Each position of these portable communication terminals A, C, and D is acquired.

FIG. 21 shows an example of the positions of the mobile communication terminals A, C, D detected by the mobile communication terminals A, C, D when the mobile communication terminals A, C, D enter the communication area of the calling terminal b. FIG.
As shown in FIG. 21, when the mobile communication terminals A, C, and D enter the communication area of the calling terminal b, the positions of the mobile communication terminals A, C, and D are set at processing time intervals (sampling time, for example, every 3 seconds). ). If the radio is transmitted in a radial pattern, it is considered that the position of the radio wave arrival limit draws a circle centering on the transmitting terminal b, so that the mobile communication terminals A, C, and D The positions of the mobile communication terminals A, C, and D are detected for the first time at the outermost periphery.

  Therefore, the search execution unit 124 first enters each communication terminal A, C, D (each mobile communication terminal 50 storing the program ID) after entering the communication range of the transmission terminal b to be searched. By acquiring the positions of the mobile communication terminals A, C, and D detected by, each position of the mobile communication terminals A, C, and D detected for the first time at the outermost periphery of the circle is acquired.

Then, the search execution unit 124 sets the positions of the mobile communication terminals A, C, and D on the outermost periphery using the expressions (1) and (2) based on the positions of the mobile communication terminals A, C, and D, respectively. The center position of the included circle is calculated as the position of the transmitting terminal b.
In the search support system 1, when a search request for a bicycle (transmitting terminal 10) is made by a series of processes as shown in FIG. 20, a plurality of mobile communication terminals 50 are transmitting terminals attached to the bicycle. The caller terminal 10 is detected by communication with the caller 10. Then, the search support system 1 estimates the position of the bicycle (transmission terminal 10) based on the position information of the plurality of mobile communication terminals 50 when the transmission terminal 10 is detected, and the position of the bicycle (transmission terminal 10) ( The calculated request position and the estimated position) are notified to the search requester via the mobile communication terminal 50.

(Effect in this embodiment)
(1) The search support server 100 can increase the detection accuracy (estimation accuracy) of the position of the transmission terminal 10 by estimating the position of the transmission terminal 10 based on the position information of the mobile communication terminal 50.

(2) Since the search support server 100 can identify the position information of the plurality of mobile communication terminals 50 based on the program ID, the search support server 100 can estimate the position of the transmission terminal 10 using the position information of each of the plurality of mobile communication terminals 50. Thereby, the search support server 100 can further increase the estimation accuracy of the position of the transmission terminal 10.

(3) In the search support server 100, the search execution part 124 has specified the positional information of the several mobile communication terminal 50 detected by the communication limit position of the short-distance wireless communication from the transmission terminal 10 by the process of step S134. . And search execution part 124 presumes the position of transmitting terminal 10 using the position information on a plurality of specified portable communication terminals 50. Thereby, the search support server 100 can estimate the position of the transmission terminal 10 based on the position information of the plurality of mobile communication terminals 50 using the fact that the communication limit distance of short-range wireless communication is known. The estimation accuracy of the position of the transmitting terminal can be further increased.

(4) The search support server 100 can process the transmission terminal 10 and the mobile communication terminal 50 in association with each other based on the transmission terminal ID and the program ID. As a result, the search support server 100 does not perform a process of estimating the position of the transmission terminal 10 when the mobile communication terminal 50 is located within the communication area of the transmission terminal 10 associated with the mobile communication terminal 50. Thus, the position is not estimated even when the mobile communication terminal 50 is near the transmitting terminal 10 and it is not necessary to search for the transmitting terminal 10. As a result, the search support server 100 can reduce the processing load without performing unnecessary position estimation processing.

  Specifically, the mobile communication terminal 50 transmits the position information when the mobile communication terminal 50 is located within the communication area of the transmitting terminal 10 that is not associated with the mobile communication terminal 50. In other words, the mobile communication terminal 50 does not transmit position information when it is located within the communication area of the transmitting terminal 10 associated with the mobile communication terminal 50. Therefore, the mobile communication terminal 50 does not transmit the position information to the search support server 100 even when there is no need to search the transmission terminal 10 because it is near the transmission terminal 10. As a result, the search support server 100 can reduce the processing load without sending unnecessary position information.

(5) The search support server 100 estimates the position of the transmission terminal 10 based on the position information of the mobile communication terminal 50 after the time when the search is requested. Thereby, the search support server 100 can estimate the position of the transmission terminal 10 based on the latest position information of the mobile communication terminal 50. As a result, the search support server 100 can estimate the latest position of the transmission terminal 10.

(6) In the search support server 100, the search execution unit 124 is position information associated with each combination of one transmission terminal ID and three different program IDs acquired by the process of step S132, and The position information acquisition time is position information later than the search request time associated with the transmission terminal ID, and the oldest time from the position information continuous in time series of each of the combinations (three combinations) Each piece of position information (three pieces of position information) is acquired. In other words, the search execution unit 124 acquires appropriate position information from the position information history of each of the plurality of mobile communication terminals. As a result, the search support server 100 can further increase the accuracy of detecting the position of the calling terminal.

(7) The search support server 100 estimates the position of the transmission terminal 10 by calculation formulas such as the formulas (1) and (2). Thereby, the search support server 100 can further increase the estimation accuracy of the position of the transmitting terminal.

  In the description of the above-described embodiment, the transmission terminal 10 constitutes a first terminal, for example. Further, the mobile communication terminal 50 constitutes a second terminal, for example. Moreover, the internet communication part 101 comprises a positional information receiving means, for example. Moreover, the memory | storage part 110 comprises a memory | storage means, for example. Moreover, the search execution part 124 comprises an estimation means, a notification means, and an output means, for example. Moreover, program ID comprises 1st identification information, for example. Moreover, transmission terminal ID comprises 2nd identification information, for example.

(Other examples of this embodiment)
As another example of the present embodiment, the search execution unit 124 may calculate the position of the transmission terminal 10 to be searched based on the position information of one mobile communication terminal 50 (program ID). Specifically, when the search execution unit 124 detects one transmission terminal ID and three position information groups for one program ID from the transmission terminal detection information database 113, the search execution unit 124 performs transmission by the processing of steps S133 to S135. The terminal 10 is calculated.

  As another example of the present embodiment, the search execution unit 124 may transmit information that can specify the position of the transmission terminal 10 to the mobile communication terminal 50. The information that can specify the position is not the position itself, but information on buildings and intersections on or near the position.

  Further, as another example of the present embodiment, when the transmitting terminal detection unit 63 detects the transmitting terminal 10 associated with its own mobile communication terminal 50 (program ID), the current state of the mobile communication terminal 50 is also detected. The position may be included in the transmission terminal detection information and transmitted to the search support server 100. In this case, also on the search support server 100 side, the search execution unit 124 calculates the position of the search target transmission terminal 10 also using the current position.

  As another example of the present embodiment, the ID registration unit 61 may perform the process of step S11 of the registration process with reference to the registration information database 111 of the search support server 100. In this case, as a process of step S11, when the ID registration unit 61 detects the transmitting terminal 10 that is communicable by short-range wireless communication by the short-range wireless communication unit 53, the ID registration unit 61 sets the transmitting terminal ID of the transmitting terminal 10 to It transmits to the search support server 100.

On the other hand, the search support server 100 determines whether or not the transmission terminal ID sent from the mobile communication terminal 50 is associated with any program ID in the registration information database 111. Then, search support server 100 transmits the determination result to portable communication terminal 50.
In the mobile communication terminal 50, the ID registration unit 61 proceeds to step S12 when the determination result indicates that the calling terminal ID is not associated with any program ID.

  As another example of the present embodiment, the transmission terminal detection unit 63 may perform the process of step S51 of the transmission terminal detection process with reference to the registration information database 111 of the search support server 100. In this case, as the processing of step S51, when the transmitting terminal detection unit 63 detects the transmitting terminal 10 that is communicable by the short-range wireless communication by the short-range wireless communication unit 53, its own program ID and the transmission The transmitting terminal ID of the terminal 10 is transmitted to the search support server 100.

On the other hand, the search support server 100 determines whether or not the program ID transmitted from the mobile communication terminal 50 and the transmission terminal ID are associated with each other in the registration information database 111. Then, search support server 100 transmits the determination result to portable communication terminal 50.
In the mobile communication terminal 50, the transmission terminal detection unit 63 proceeds to step S52 when the determination result indicates that the program ID and the transmission terminal ID are not associated with each other.

As another example of this embodiment, the search execution unit 124 estimates the position of the transmission terminal 10 based on position information associated with each combination of one transmission terminal ID and two different program IDs. You may do it.
FIG. 22 is a diagram illustrating an example of a method for estimating the position of the transmission terminal 10 based on position information associated with each combination of one transmission terminal ID and two different program IDs.

  As shown in FIG. 22, when the mobile communication terminals A and C enter the communication area of the transmission terminal b, the transmission terminal detection information database 113 includes the mobile communication terminals A and C detected by the mobile communication terminals A and C. The position information of is stored. And the search execution part 124 is the positional information matched with each combination of one transmission terminal ID (transmission terminal ID = b) and two different program IDs (program ID = A, C), and The acquisition time of the position information is position information that is later than the search request time associated with the transmission terminal ID, and is the oldest from the position information that is continuous in time series for each of the combinations (two combinations). Two pieces of position information of time are acquired.

  Then, the search execution unit 124 specifies two circles α and β having the radius of the communicable distance of the short-range wireless communication passing through the two acquired positions. Furthermore, the search execution unit 124 selects a circle α including time-series consecutive positions associated with two different program IDs (program ID = A, C) among the two identified circles α, β. Then, the center position of the selected circle α is estimated as the position of the transmission terminal b.

  As described above, the search execution unit 124 estimates the position of the transmission terminal 10 based on the position information associated with each combination of one transmission terminal ID and two different program IDs, thereby reducing the number of mobile phones. Based on the position information of the communication terminal 50, the position of the transmission terminal 10 can be estimated.

  As another example of the present embodiment, the search execution unit 124 sets the three positions acquired by the process of step S134 as coordinate positions (x1, y1), (x2, y2), and (x3, y3). The center position (x0, y0) of the circle that passes through each coordinate position of may be estimated by a method other than the method of calculating using the above equations (1) and (2). For example, another calculation formula may be used, and a circle that actually passes through the coordinate positions (x1, y1), (x2, y2), (x3, y3) is drawn, and the center position (x0, y0) is also obtained. Also good.

  As another example of the present embodiment, the search execution unit 124 may estimate the position of the transmission terminal 10 based on the position information of one mobile communication terminal 50. Specifically, when the search execution unit 124 detects one position information group in which positions are consecutive with respect to one transmission terminal ID and one program ID from the transmission terminal detection information database 113, the one position information group Based on the above, the transmitting terminal 10 is estimated. For example, the search execution unit 124 acquires the position information and the latest position information with the oldest acquisition time of one position information group, that is, the first position information and the last position information of one position information group. Then, the search execution unit 124 uses the acquired two pieces of position information and performs the same process as the process described with reference to FIG. Specify two circles α and β. Further, the search execution unit 124 selects a circle including the position information group from the two specified circles α and β, and estimates the center position of the selected circle α as the position of the transmission terminal 10.

Further, as another example of the present embodiment, the search execution unit 124 is based on the position information stored in the transmission terminal detection information database 113 before the search request is made, that is, before the search request transmission time. The position of the transmission terminal 10 to be searched may be calculated (estimated). In this case, the requirement set in advance in the determination process in step S133 need only be a combination of one transmission terminal ID acquired by the process in step S132 and three different program IDs.
As another example of the present embodiment, the short-range wireless communication may be other than Bluetooth (registered trademark).

  As another example of the present embodiment, the search support system 1 may use the individual ID of the mobile communication terminal 50 itself as information that can identify the mobile communication terminal 50 instead of the program ID.

  As another example of the present embodiment, the search support system 1 does not have to have a one-to-one correspondence between the mobile communication terminal 50 and the transmission terminal 10. That is, in the search support system 1, the mobile communication terminal 50 may exist independently without being associated with the calling terminal 10. In this case, when the transmitting terminal detection unit 63 of the mobile communication terminal 50 that is not associated with the transmitting terminal 10 and exists alone detects the transmitting terminal 10 within the communication range of the short-range wireless communication by the short-range wireless communication unit 53. The transmitting terminal position information is transmitted to the search support server 100 for all detected transmitting terminals 10.

  As another example of the present embodiment, the acquisition time of the position information stored in the transmission terminal detection information database 113 may be determined by the search support server 10. In this case, for example, the detection information management unit 123 sets the time when the transmission end detection information from the portable terminal 50 is received by the detection information management process as the acquisition time of the position information. Then, the detection information management unit 123 stores the acquisition time in the transmission terminal detection information database 113.

  As another example of the present embodiment, the search execution unit 124 may transmit the position of the transmission terminal 10 to be searched to the mobile communication terminal 50 as an image showing on a map. Specifically, the search execution unit 124 attaches the URL of a page where an image showing the position of the transmission terminal 10 to be searched on a map can be viewed to the mobile communication terminal 50 as an email. And the search execution part 124 performs the process which draws the changed position on a map, when the position of the transmission terminal 10 of search object changes. Thus, the search requester can confirm the change in the position of the transmitting terminal 10 requested to search on the map only by accessing the site of the URL acquired once.

Further, in the above-described embodiment, a search support server that communicates with a mobile communication terminal capable of communicating with a transmission terminal that communicates by short-range wireless and has a positioning unit, and supports search of the transmission terminal, When the mobile communication terminal is located within the short-range wireless communication range of the transmitting terminal, the mobile communication terminal acquires position information by the positioning means of the mobile communication terminal, and transmits the acquired position information. A position information receiving means for receiving position information from the mobile communication terminal; a storage means for storing the position information received by the position information receiving means; and a plurality of position information stored in the storage means. In addition, a search support server is provided that includes estimation means for estimating the position of the transmission terminal, and output means for outputting the position of the transmission terminal estimated by the estimation means as identifiable information.
Thereby, the search support server can increase the detection accuracy of the position of the transmitting terminal by estimating the position of the transmitting terminal based on the position information of the plurality of mobile communication terminals.

Further, in the above-described embodiment, the estimation unit realizes a search support server that estimates the position of the transmission terminal based on a plurality of position information groups in which the positions stored in the storage unit are continuous. .
Accordingly, the search support server can estimate the position of the transmission terminal using a plurality of position information groups. Thereby, the search support server can further increase the estimation accuracy of the position of the transmitting terminal.

  In the above-described embodiment, the storage unit stores the location information received by the location information receiving unit and the acquisition time of the location information in the mobile communication terminal in association with each other, and the estimation unit The position information of the oldest acquisition time associated with the position information is selected from each of a plurality of position information groups in which the position stored in the storage unit is continuous, and the position information is based on the selected plurality of position information. A search support server that estimates the position of the calling terminal is realized.

  As a result, the search support server can identify a plurality of pieces of position information detected at the communication limit position of the short-range wireless communication from the calling terminal, and can estimate the position of the calling terminal using the specified plurality of position information. Thereby, the search support server can estimate the position of the transmitting terminal based on a plurality of pieces of positional information by using the fact that the communication limit distance of short-range wireless communication is known. Can be further increased.

  In the above-described embodiment, the storage unit stores the location information received by the location information receiving unit and the acquisition time of the location information in the mobile communication terminal in association with each other, and the estimation unit The position information of the oldest acquisition time associated with the position information is selected from each of the three position information groups in which the position stored in the storage unit is continuous, and the position information is based on the selected three position information. A search support server that estimates the position of the calling terminal is realized.

  Thereby, the search support server can specify the three pieces of position information detected at the communication limit position of the short-range wireless communication from the calling terminal, and can estimate the position of the calling terminal using the specified three pieces of position information. As a result, the search support server can estimate the position of the transmitting terminal based on the three pieces of position information using the fact that the communication limit distance of short-range wireless communication is known. Can be further increased.

  Further, in the above-described embodiment, there are a plurality of the mobile communication terminals, and the mobile communication terminals can identify the mobile communication terminals when they are located within the communication range of the short-range wireless communication of the transmitting terminal. Transmitting the first identification information, which is information, and the position information acquired by the positioning means included in the portable communication terminal, and the position information receiving means receives the first identification information from the portable communication terminal and the position information. The storage means stores the first identification information received by the position information receiving means and the position information in association with each other, and the estimation means stores a plurality of types of first identification information in the storage means. A search support server that estimates the position of the transmitting terminal based on the history of each piece of position information associated with the plurality of types of first identification information.

  Thereby, the search support server can estimate the position of the transmission terminal using appropriate position information from the history of position information of each of the plurality of mobile communication terminals. Thereby, the search support server can further increase the estimation accuracy of the position of the transmitting terminal.

  In the above-described embodiment, the mobile communication terminal is first identification information that is information that can identify the mobile communication terminal when the mobile communication terminal is located within a communication range of the short-range wireless communication of the transmitting terminal, and The position information acquired by the positioning means of the mobile communication terminal is transmitted, the position information receiving means receives the first identification information and the position information from the mobile communication terminal, and the storage means The first identification information received by the position information receiving means, the position information, and the acquisition time of the position information in the mobile communication terminal are stored in association with each other, and the estimation means includes a plurality of types stored in the storage means. From the position information associated with the first identification information, the position information of the oldest acquisition time associated with the position information is selected for each of the plurality of types of first identification information Realizes a search support server for estimating the location of the calling terminal based on a plurality of position information associated with the first identification information of the plurality of the selected type.

  Thus, the search support server specifies the position information of the plurality of mobile communication terminals detected at the communication limit position of the short-range wireless communication from the transmission terminal, and uses the position information of the specified plurality of mobile communication terminals Can be estimated. As a result, the search support server can estimate the position of the transmission terminal based on the position information of the plurality of mobile communication terminals by using the fact that the communication limit distance of short-range wireless communication is known. The position estimation accuracy can be further increased.

  In the above-described embodiment, the mobile communication terminal is first identification information that is information that can identify the mobile communication terminal when the mobile communication terminal is located within a communication range of the short-range wireless communication of the transmitting terminal, and The position information acquired by the positioning means of the mobile communication terminal is transmitted, the position information receiving means receives the first identification information and the position information from the mobile communication terminal, and the storage means The first identification information received by the position information receiving means, the position information, and the acquisition time of the position information in the mobile communication terminal are stored in association with each other, and the estimation means has three types stored in the storage means From the position information associated with the first identification information, the position information of the oldest acquisition time associated with the position information is selected for each of the three types of first identification information, It is realized search support server to estimate the location of the calling terminal the-option was the 3 kinds of three positional information associated with the first identification information based.

  Thereby, the search support server specifies the position information of the three mobile communication terminals detected at the communication limit position of the short-range wireless communication from the transmission terminal, and uses the position information of the three specified mobile communication terminals to Can be estimated. As a result, the search support server can estimate the position of the transmission terminal based on the position information of the three mobile communication terminals by using the fact that the communication limit distance of short-range wireless communication is known. The position estimation accuracy can be further increased.

  In the present embodiment, the estimation means uses the following formulas (1) and (2) based on the three pieces of position information (x1, y1), (x2, y2), (x3, y3). Thus, the position (x0, y0) of the transmitting terminal is calculated, and a search support server using the calculated value as an estimated value is realized.

  x0 = (y1y2 ^ 2-y1y3 ^ 2 + y2y3 ^ 2 + y1x2 ^ 2-y1x3 ^ 2 + y2x3 ^ 2-y1 ^ 2y2 + y1 ^ 2y3-y2 ^ 2y3-y2x1 ^ 2 + y3x1 ^ 2-y3x2 ^ 2) / 2 {y1 (x2-x3) + Y2 (x3-x1) + y3 (x1-x2)} (1)

y0 = (x1x2 ^ 2-x1x3 ^ 2 + x2x3 ^ 2 + x1y2 ^ 2-x1y3 ^ 2 + x2y3 ^ 2-x1 ^ 2x2 + x1 ^ 2x3-x2 ^ 2x3-x2y1 ^ 2 + x3y1 ^ 2-x3y2 ^ 2) / 2 {x1 (y2-y3) + X2 (y3-y1) + x3 (y1-y2)} (2)
As a result, the search support server can estimate the position of the transmission terminal by a calculation formula, and can further increase the estimation accuracy of the position of the transmission terminal.

  Further, in the above-described embodiment, a plurality of the transmission terminals are associated with the plurality of mobile communication terminals, respectively, and the mobile communication terminal is close to the transmission terminal that is not associated with the mobile communication terminal. Second identification information that is identification information of the transmitting terminal, first identification information that is information that can identify the portable communication terminal, and positioning that the portable communication terminal has when located in a communication area of range wireless communication The position information receiving means realizes a search support server that receives the second identification information, the first identification information, and the position information from the mobile communication terminal. .

  As a result, the mobile communication terminal does not transmit location information when it is located within the communication range of the transmission terminal associated with the mobile communication terminal, so it is necessary to search for the transmission terminal near the transmission terminal. No position information is transmitted even when there is not. As a result, the search support server can reduce the processing load without sending unnecessary position information.

  Further, in the above-described embodiment, the mobile communication terminal further includes a search request receiving unit that receives a search request for the transmission terminal from a search requester of the transmission terminal, and the mobile communication terminal performs short-range wireless communication of the transmission terminal. The first identification information that is information that can identify the mobile communication terminal when located in a communication area, and the position information acquired by the positioning means that the mobile communication terminal has, the position information receiving means, The first identification information and the position information from the portable communication terminal are received, and the storage means receives the first identification information, the position information, and the position information in the portable communication terminal received by the position information receiving means. The acquisition means is stored in association with each other, and the estimation means includes a plurality of types of first identification information stored after the search request receiving means receives the search request and the storage means and When the acquisition time of the position information associated with the plurality of types of first identification information is after the time when the search request is made, the plurality of position information associated with the plurality of types of first identification information The position information at the oldest acquisition time associated with the position information is selected for each of the plurality of types of first identification information, and is associated with the selected plurality of types of first identification information. A search support server that estimates the position of the transmitting terminal based on a plurality of pieces of position information is realized.

  Thus, the search support server estimates the position of the transmitting terminal based on the position information of the mobile communication terminal after the time when the search is requested, and thereby determines the position of the transmitting terminal based on the latest position information of the mobile communication terminal. Can be estimated. Thereby, the search support server can notify the search requester of the latest position of the transmission terminal.

In the above-described embodiment, the short-range wireless communication realizes a search support server that is communication conforming to the Bluetooth (registered trademark) standard.
Thus, by using Bluetooth (registered trademark) with established communication method as short-range wireless communication, short-range wireless communication can be performed easily and stably between the transmitting terminal and the mobile communication terminal.

  Further, in this embodiment, a transmitting terminal that performs communication by short-range wireless, a mobile communication terminal that can communicate with the transmitting terminal, and a search support server that supports the search of the transmitting terminal by performing the mobile communication terminal communication And the mobile communication terminal detects the transmitting terminal within a communication range of the short-range wireless communication by the short-range wireless communication with the transmitting terminal, and the mobile communication Positioning means for positioning the position of the terminal, and position information transmitting means for transmitting the position information acquired by the positioning means when the detecting means detects the transmitting terminal, the search support server, Position information receiving means for receiving the position information transmitted by the transmitting means; storage means for storing the position information received by the position information receiving means; and a plurality of information stored in the storage means And estimating means for estimating the location of the calling terminal based on location information, said estimating means is realized search support system and an output means for outputting as information capable of specifying the location of the calling terminal estimated.

Further, in the present embodiment, there is provided a search support method for supporting search of the transmission terminal by a search support server capable of communicating with a mobile communication terminal capable of communicating with a transmission terminal that communicates by short-range wireless communication and having positioning means. When the mobile communication terminal is located within the short-range wireless communication range of the transmitting terminal, the positioning means of the mobile communication terminal acquires the position information and transmits the acquired position information. Transmitting step, receiving step for receiving the position information transmitted in the transmitting step at the search support server, and storing step for storing the position information received in the receiving step at the search support server; , An estimation step of estimating the position of the transmission terminal by the search support server based on a plurality of position information stored in the storage step, and a transmission terminal estimated in the estimation step Is realized search support method and an output step of outputting at the search support server as information for specifying the location.
Further, in the present embodiment, the program stored in the storage unit 110 of the search support server 100 communicates with a mobile communication terminal capable of communicating with a transmission terminal that performs communication by short-range wireless communication and has a positioning unit, and performs the transmission. A computer program of a search support server for supporting search of a terminal, wherein the mobile communication terminal is located when the mobile communication terminal is located within a communication range of short-distance wireless communication of the transmitting terminal The position information is acquired by the positioning means possessed by, and the acquired position information is transmitted, the position information receiving means receives the position information from the portable communication terminal, and the storage means is received by the position information receiving means. And the estimating means estimates the position of the transmitting terminal based on the plurality of position information stored in the storing means, and the communication means is estimated by the estimating means. It realizes a program to be executed the search assistance be output to output by the server as identifiable information, to the computer the position of the originating terminal that.

  Also, while embodiments of the present invention have been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the present invention. All such modifications and equivalents are intended to be included in the following claims.

  DESCRIPTION OF SYMBOLS 1 Search support system 10 Sending terminal 50 Mobile communication terminal 60 Processing part 61 ID registration part 62 Search requesting part 63 Sending terminal detection part 100 Search support server 101 Internet communication part 110 Storage part 111 Registration Information database, 112 Search request information database, 113 Originating terminal detection information database, 120 processing unit, 121 registration information management unit, 122 search request management unit, 123 detection information management unit, 124 search execution unit

Claims (7)

A search support server that supports searching for a first terminal that performs wireless communication within a certain communication range,
Position information receiving means for receiving position information measured by a second terminal located within the communication range of the first terminal;
Storage means for storing position information received by the position information receiving means;
Estimating means for estimating the position of the first terminal based on the position information stored in the storage means;
Search support server having. The position information receiving means receives first identification information capable of identifying the second terminal together with the position information,
The storage means stores the first identification information and the position information in association with each other,
The search support server according to claim 1, wherein the estimation unit estimates a position of the first terminal based on the first identification information and the position information stored in the storage unit. . The storage means stores the position information and the position information in association with the acquisition time acquired by the second terminal;
The search support server according to claim 1 or 2, wherein the estimation means estimates the position of the first terminal based on the position information and the acquisition time stored in the storage means. . The location information receiving means receives, in addition to the location information transmitted by the second terminal, second identification information for identifying the first terminal and first identification information for identifying the second terminal. The search support server according to claim 1, wherein: A search request signal receiving means for receiving a search request signal of the first terminal;
When the estimation means estimates the position of the first terminal, the time when the search request signal reception means receives the search request signal and the acquisition time of the position information associated with the first identification information The search support server according to claim 3, wherein: A first terminal that performs wireless communication within a certain communication range;
A second terminal capable of communicating with the first terminal;
A search support server that communicates with the second terminal and supports search of the first terminal;
The second terminal is
Detecting means for detecting the first terminal in the communication area by communication with the first terminal;
Positioning means for positioning the position of the second terminal;
Position information transmitting means for transmitting position information measured by the positioning means when the detecting means detects the first terminal;
Have
The search support server
Position information receiving means for receiving the position information transmitted by the transmitting means;
Storage means for storing position information received by the position information receiving means;
Estimating means for estimating the position of the first terminal based on position information of the second terminal stored in the storage means;
Search support system with. A search support method for supporting a search for a first terminal that performs wireless communication within a certain communication range,
Receiving position information measured by a second terminal located within the communication range of the first terminal;
Storing the position information received by the position information receiving means;
Estimating the position of the first terminal based on the position information stored in the storage means;
Search support method having.