WO2019220849A1

WO2019220849A1 - Position information sharing system

Info

Publication number: WO2019220849A1
Application number: PCT/JP2019/016488
Authority: WO
Inventors: 亜矢子角田
Original assignee: 株式会社デンソー
Priority date: 2018-05-17
Filing date: 2019-04-17
Publication date: 2019-11-21
Also published as: JP2019200645A; JP6756343B2

Abstract

Provided is a position information sharing system (1) comprising mobile body devices (2, 11) and a management server (21). The mobile body devices comprise: host device position detection devices (5, 13); transmission devices (3, 12) for transmitting host device position information to the management server; receiving devices (3, 12) for acquiring, from the management server, member position information pertaining to each of members forming a group; and display devices (7, 15) for displaying the member position information. The management server comprises: a collection device (23a) for collecting the host device position information from each of the mobile body devices; a distribution device (23b) for transmitting the member position information to each of the mobile body devices forming the group; and a report precision adjustment device (28) for automatically changing the precision with which the member position information is reported such that the precision is lower as a time period until an event commencement time is longer and the precision is higher as a time period until the event commencement time is shorter.

Description

Location information sharing system

Cross-reference of related applications

This application is based on Japanese Application No. 2018-095349 filed on May 17, 2018, the contents of which are incorporated herein by reference.

This disclosure relates to a location information sharing system that enables location information to be shared among group members such as friends.

In portable communication terminals such as smartphones, for example, when meeting with friends, a position information providing system that facilitates waiting by sharing each other's position information and displaying it on a map screen is considered ( For example, see Patent Document 1). In this system, when waiting in a group of a plurality of people including a user, the server collects position information of each member detected by using, for example, GPS, and sends it to each mobile communication terminal of the plurality of members. The position information is transmitted. Thereby, the position information of each member's current position is displayed on the display screen of the user's mobile communication terminal together with the surrounding map.

By the way, in the above-described location information sharing system, since the current location information is notified to the notification partner, there is a case where it is not desired to know the detailed location information too much from the viewpoint of privacy protection. Therefore, in Patent Document 1, it is considered to provide a function capable of setting, that is, selecting the level of detail of position information to be transmitted to a partner from a plurality of stages in advance for each partner. According to this, it is possible to keep the user informed of the approximate position of the other party who does not want to be notified of the detailed position.

JP 2001-218250 A

However, in the above configuration, the user has to specify the level of detail in advance for each notification destination, which requires troublesome setting operations for the user. For example, the level of detail of the displayed position is automatically adjusted according to the distance from the meeting point, that is, the accuracy is lowered when the distance from the meeting point is far, and the accuracy is increased when approaching the meeting point. Is also possible. However, if the user wants to make a personal purchase near the meeting point, for example, the detailed position is notified, and privacy cannot be protected.

The present disclosure provides a location information sharing system that can share location information among group members, and can effectively protect privacy without a troublesome operation by a user. For the purpose.

In the first aspect of the present disclosure, the location information sharing system includes an on-board device provided in a vehicle on which each member constituting the group rides or a mobile communication terminal possessed by each member, and the movement of the mobile device. And a management server communicable with a mobile device, capable of executing a location information sharing function for sharing location information among the members at the time of execution of a predetermined event, The apparatus includes: an own apparatus position detection apparatus that detects the position of the own apparatus; a transmission apparatus that transmits the own apparatus position information detected by the own apparatus position detection apparatus to the management server; and each member constituting the group. A receiving device that acquires member position information that is position information of a mobile device from the management server; and a display device that displays the member position information on a map screen; The management server includes: a collection device that collects its own location information from each mobile device; a distribution device that transmits the member location information to each mobile device that constitutes the group; and up to the event start time. A notification accuracy adjusting device that automatically changes the position notification accuracy of the member position information so that the accuracy is low when the required time is long and the accuracy is higher as the required time is shorter It has.

According to this, when a position information sharing function for sharing position information among members constituting a group is executed when a predetermined event is executed, the mobile device of each member is detected by the own position detection device. The own position information is transmitted to the management server by the transmission device. In the management server, member position information, which is position information, is collected from the mobile device of each member by the collection device, and member position information is transmitted to each mobile device by the distribution device. Then, in the mobile device, member position information is acquired from the management server by the receiving device. In each mobile device, the acquired member position information is displayed on the map screen of the display device.

At this time, the notification accuracy adjusting device of the management server has a low accuracy of the position notification accuracy of the member position information distributed to each mobile device when the required time is long according to the required time to the event start time. The time is automatically changed so that the accuracy becomes higher as the required time becomes shorter. Thereby, when the time required until the event start time is relatively long, the rough position information of each member is displayed on the mobile device of each member. When it is close to the event start time, detailed position information of each member is displayed on the mobile device of each member.

Therefore, when the time required until the event start time is relatively long, only the position information with low accuracy is notified, and the privacy of the user is protected. In this case, since the position notification accuracy is adjusted not according to the distance but according to the time, the detailed position is not notified even when the user is near the point related to the event. In addition, since the adjustment of the position notification accuracy is automatically performed, it is needless to say that a troublesome operation for the user is not necessary. As a result, it is possible to share position information among group members, and it is possible to effectively protect privacy without a troublesome operation by the user.
The event means a place, time, or time, for example, waiting, gathering, pick-up, etc.

The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings. The drawing
FIG. 1 shows an embodiment and is a diagram schematically showing an overall configuration of a location information sharing system. FIG. 2 is a flowchart showing the overall processing flow at the time of event execution in the location information sharing system, FIG. 3 is a sequence diagram showing the flow of the function active process. FIG. 4 is a sequence diagram showing the flow of position information accuracy adjustment processing. FIG. 5 is a sequence diagram showing a flow of message transmission processing. FIG. 6 is a sequence diagram showing the flow of function deactivation processing. FIG. 7 is a diagram illustrating a display example of the display screen.

Hereinafter, an embodiment will be described with reference to the drawings. In addition, in this embodiment, as a mobile device, both a vehicle-mounted device mounted on an automobile on which a user, that is, a member of the group rides, or a mobile communication terminal such as a smartphone possessed by the user, that is, a member of the group. The case of including is taken as an example. Further, in the present embodiment, a case where Mr. A and Mr. C meet as an event and pick up with a vehicle, for example, will be described as a specific example.

FIG. 1 schematically shows a configuration of a location information sharing system 1 according to the present embodiment. The position information sharing system 1 is used, for example, for a member of a group of friends, for example, to wait while sharing position information. As shown in FIG. 1, the position information sharing system 1 includes an in-vehicle device 2 mounted on a vehicle on which a user gets and drives, and a smartphone 11 as a mobile communication terminal owned by another user in the group, for example. The management server 21 is configured to be capable of communicating with the vehicle-mounted device 2 and the smartphone 11 via the Internet or the like. Hereinafter, when it is necessary to generically refer to the vehicle-mounted device 2 and the smartphone 11, the

mobile device

2 and 11 will be referred to as including both of them.

The

mobile devices

2 and 11 are preinstalled with an application for realizing a location information sharing function, that is, for receiving a location information sharing service. In this embodiment, the members of the group use, for example, a schedule sharing management service provided by the third party server 41, and the third party server 41 stores user schedule information 42. The

mobile devices

2 and 11 and the management server 21 can access the user's schedule information 42 via the Internet, for example. The schedule information 42 includes event information described later.

The in-vehicle device 2 includes a communication control interface unit 3, an occupant information acquisition unit 4, a current position information acquisition unit 5, an input unit 6, a display unit 7, and an input / output interface unit 8. At the same time, the vehicle-mounted device 2 includes a control unit (not shown) composed of a computer or the like that controls the entire device. The input / output interface unit 8 is connected to, for example, an in-vehicle network to acquire various vehicle information, and is connected to a driver camera 9 that captures a driver and an in-vehicle camera 10 that captures the interior of the vehicle via the in-vehicle network. , Get their image data.

The communication control interface unit 3 communicates with the management server 21 via the Internet or the like. As will be described later, the communication control interface unit 3 transmits the own device location information to the management server 21 and the member location information. It functions as a receiving device acquired from the management server 21. The occupant information acquisition unit 4 acquires information for identifying drivers and passengers, that is, ID information. The occupant information acquisition unit 4 is a driver that uses, for example, image data of the driver camera 9 or vehicle interior camera 10 or authentication by communication with a communication terminal carried by the driver or passenger in the vehicle. And judge passengers.

The current position information acquisition unit 5 detects the current position of the host vehicle, the current time, and the like based on the received signal of the GPS receiver, for example, and realizes the function as the own position detection device. The display unit 7 includes, for example, a center display provided on the instrument panel, a meter display, and the like, and displays a map screen around the current position of the vehicle, that is, a navigation screen and necessary messages. In this case, the display unit 7 functions as a display device that displays member position information on the map screen, as will be described later. The input unit 6 is for a user, that is, a driver, to perform a necessary input operation, and includes a touch panel, a mechanical switch, and the like provided on the screen of the display unit 7.

The smartphone 11 includes a communication control interface unit 12, a current position information acquisition unit 13, an input unit 14, a display unit 15, and an input / output interface unit 16. Along with this, the smartphone 11 includes a control unit (not shown) composed of a computer or the like that controls the entire device. The communication control interface unit 12 communicates with the management server 21 via the Internet or the like. As will be described later, the communication control interface unit 12 functions as a transmission device that transmits its own location information to the management server 21 and a reception device that acquires member location information from the management server 21.

The current position information acquisition unit 13 detects the current position, the current time, and the like of the own device based on the reception signal of the GPS receiver, for example, and implements the function as the own device position detection device. As will be described later, the display unit 15 functions as a display device that displays member position information on a map screen. The input unit 14 is for a user to perform a necessary input operation, and includes a touch panel provided on the screen of the display unit 15. The input / output interface unit 16 is for connection with an external device.

The management server 21 includes a control unit 22 that is configured mainly by a computer and controls the whole, and includes a communication control interface unit 23 and a storage unit 24. Further, the control unit 22 includes a driver specifying unit 25, a schedule information interpretation unit 26, an event time calculation unit 27, a transmission map data generation unit 28, a map data acquisition unit 29, and a message transmission determination unit 30. The storage unit 24 includes a map database 31, a user database 32, and an event information database 33.

The communication control interface unit 23 communicates with the vehicle-mounted devices 2 and the smartphones 11 via the Internet or the like. The communication control interface unit 23 is a member for each of the in-vehicle devices 2 and the smartphones 11, and the collection unit 23 a as a collection device that collects the own device position information from each of the in-vehicle devices 2 and the smartphones 11. It has a function as a distribution unit 23b as a distribution device that transmits position information. The member position information is information indicating the current position of the vehicle-mounted device 2 or the smartphone 11 of each member constituting the group.

In the map database 31 of the storage unit 24, map data is stored. The user database 32 stores information on the user ID of each on-vehicle device 2 and each smartphone 2. At the same time, the user database 32 also stores information such as which group the vehicle user of each vehicle-mounted device 2, ie, the driver and the user of each smartphone 2 belongs to. The event information database 33 stores event information.

This event information includes information such as event type, date and place in each group. As a specific example, for example, when a group performs waiting or pick-up, it is information such as the date and place of the waiting or pick-up. In the case of picking up or picking up, information on the user picking up in the vehicle, that is, the driver, information on the user to be picked up, that is, information on the

mobile devices

2 and 11 is also included. Particularly in the present embodiment, as described later, the event information includes message destination information and a context definition that is a condition for determining whether or not to transmit the message. This message transmission condition is registered in the event information database 33 in advance.

The driver specifying unit 25 of the control unit 22 specifies a vehicle driver from the driver information transmitted from the vehicle-mounted device 2. The schedule information interpretation unit 26 acquires schedule information 42 of a user, that is, a driver from the third party server 41 and interprets what kind of event is present. The event time calculation unit 27 calculates a required time from the current time to the start time of the event when an event of a certain group is executed. The transmission map data generation unit 28 generates member position information. At that time, the map data acquisition unit 29 acquires necessary map data from the map database 31. The message transmission determination unit 30 implements a message transmission function for exchanging messages with the

mobile devices

2 and 11.

In the management server 21, when the event is executed, the communication control interface unit 23 collects its own location information from each member's

mobile device

2 or 11, and the transmission map data generation unit 28 obtains the member location information. Is generated. Then, the member position information is distributed to the member

mobile devices

2 and 11 by the communication control interface unit 23. The collection of the position information and the distribution of the member position information are repeatedly performed at a predetermined time, for example, every 10 seconds.

At this time, as will be described later in detail, the transmission map data generation unit 28 automatically changes the position notification accuracy of the member position information according to the time required until the event start time. That is, the position notification accuracy of the member position information is automatically changed so that the accuracy is low when the required time is long and the accuracy is increased as the required time is shortened. Accordingly, the transmission map data generation unit 28 functions as a notification accuracy adjusting device.

More specifically, in this embodiment, the time required until the event start time is, for example, within 15 minutes, that is, “short”, more than 15 minutes within 1 hour, that is, “medium”, more than 1 hour, that is, “long”. ”(See FIG. 7). When the required time is short, the position notification accuracy is the highest, for example, the position information P3 is the GPS position information as it is. When the required time is long, the position notification accuracy is low, and is displayed, for example, in a block P1 of a municipality as an administrative division. When the required time is medium, the position notification accuracy is displayed in the middle of them, for example, a section divided by a wide road on the map, that is, a block P2. In this embodiment, the member position information transmitted from the management server 21 to the

mobile devices

2 and 11 is data including the position information of the

mobile devices

2 and 11 in the display map data. .

Further, as will be described in the following description of the operation, in the present embodiment, the message transmission determination unit 30 executes the exchange of messages together with the transmission of the position information. At this time, the exchanged message is a message related to the status of the event, for example, departure, arrival, and lateness. In this embodiment, a delay notification and an arrival notification are transmitted. The message transmission determination unit 30 determines whether or not the message transmission condition is met based on a context definition that is a condition for determining whether or not to transmit a message.

More specifically, as a context definition for transmitting a delay notification, a delay notification is transmitted when the expected arrival time is later than the waiting time. As a context definition for transmitting an arrival notification, an arrival notification is transmitted when the distance to the pickup target is within 700 m and the vehicle speed is 0 km / h. In this embodiment, the message transmission function includes a function of returning a response to the message to the transmission source. Furthermore, the message transmission function can be applied to one or a plurality of communication terminal devices 43 (see FIG. 1) registered in advance in the user database 32 as a notification destination even if the person is a member who is not a member, such as a member's family. It also has a function to send messages.

Next, the operation of the above configuration will be described with reference to FIGS. Here, as a specific example, in a group of Mr. A and Mr. C, as a transfer event, Mr. A, who is a driver, drives a vehicle, and Mr. C, who is a person to be picked up, is assigned at a predetermined time. A case will be described in which a pickup is picked up at a destination, which is a meeting place, that is, picking up. The flowchart of FIG. 2 shows the flow of the entire process when an event is executed in the position information sharing system 1 of the present embodiment. Also, the sequence diagrams of FIGS. 3 to 6 show communication and processing procedures performed in the vehicle-mounted device 2, the management server 21, and the smartphone 11 in each process of FIG.

In FIG. 2, first, in step S1, a function activation process for activating the function of sharing position information in a group is executed. In the next step S2, position information system adjustment processing is executed, and in step S3, message transmission processing is executed. In step S4, function deactivation processing is executed. The processes of step S2, step S3, and step S4 are repeatedly executed in parallel. Hereinafter, the processing of steps S1 to S4 will be described in order with reference to FIGS.

That is, in the function active process in step S1, as shown in FIG. 3, when the vehicle driven by Mr. A starts traveling, the driver information is transmitted to the management server 21 in the vehicle-mounted device 2 in step A1. Sent to. In the management server 21, when the driver information is received from the vehicle-mounted device 2 in Step B1, the driver, that is, Mr. A is specified in Step B2. Next, in step B3, the driver, that is, Mr. A's schedule information is acquired, and in step B4, the latest event, in this case, information on pickup and waiting is acquired and interpreted. If there is an event, in step B5, information on the event is transmitted to the vehicle-mounted device 2, and the driver is inquired whether to activate the position information sharing function.

In the vehicle-mounted device 2, when event information is received from the management server 21 in step A2, the event information is displayed on the display unit 7 in step A3. This display is, for example, “Display pickup event. Would you like to go to Mr. C's pickup?”. When executing the pickup event, the driver, that is, Mr. A performs an operation of activating the function in the input unit 6, so that a function activation request is transmitted to the management server 21 in step A 4.

In the management server 21, when the function activation request is received from the vehicle-mounted device 2 in step B6, an event start, that is, a function activation request is sent to the smartphone 11 possessed by C in the next step B7. Send. Then, Mr. C's smartphone 11 receives an event start from the management server 21, that is, a function activation request, in step C 1 and displays it on the display unit 15. When executing a pickup event, Mr. C performs an operation of the input unit 14, for example, an “approval” operation in step C 2, so that the reply information is transmitted to the management server 21.

Then, the management server 21 receives the reply information from the smartphone 11 at step B8. In step B9, it is determined whether or not the answer result is “approval”. If it is “approval” (Yes in step B9), the function active notification is sent to the vehicle-mounted device 2 and the smartphone 11 in step B10. To both sides. In the vehicle-mounted device 2, the function active notification is received in step A 5, and in the smartphone 11, the function active notification is received in step C 3. Thereby, the location information sharing function in the location information sharing system 1 is activated, and an event is started.

The sequence diagram in FIG. 4 shows the procedure for adjusting the location information system after the function is activated. First, in the management server 21, in step B 11, a position information transmission request is transmitted to both A's in-vehicle device 2 and C's smartphone 11. In the vehicle-mounted device 2, when the position information transmission request is received in step A 11, the own device position information is transmitted to the management server 21 in step A 12. Also in the smart phone 11, when a position information transmission request is received in step C11, the own position information is transmitted to the management server 21 in step C12.

In the management server 21, when receiving the own device position information from both the vehicle-mounted device 2 and the smartphone 11 in step B12, the required time from the current time to the event start time is calculated in step B13. Map data is acquired. In the next step B15, map data including the member position information of each member of the group, in this case, the position information of the in-vehicle device 2 of Mr. A and the smartphone 11 of Mr. C is generated. At this time, as described above, the position notification accuracy when displaying member position information on the map is low when the required time is long according to the required time to the event start time, and the required time is low. It is automatically adjusted so that the shorter the is, the higher the accuracy is.

In the management server 21, in the next step B 16, the map data whose accuracy has been adjusted is transmitted to both the in-vehicle device 2 of Mr. A and the smartphone 11 of Mr. C. In the vehicle-mounted device 2, when the map data whose accuracy has been adjusted is received in step A 13, a map including member position information is displayed on the display unit 7 in step A 14. Also in the smartphone 11, when the map data after accuracy adjustment is received in Step C 13, a map including member position information is displayed on the display unit 15 in Step C 14. In this case, the processing of FIG. 4 is repeatedly executed at a predetermined time interval, for example, at an interval of 10 seconds, so that the latest member position information is always displayed.

Here, FIG. 7 shows a specific example of a display image of the member position information displayed on the display unit 7 or the display unit 15. As described above, when the time required until the event start time is long, for example, exceeds one hour, the position of the member is displayed at the block P1 of the municipal block as the administrative division. When the required time is medium, for example, more than 15 minutes and within one hour, the position of the member is displayed, for example, at a position P2 of a section divided by a wide road on the map. When the required time is short, for example, within 15 minutes, the information of the position P3 as it is is obtained by GPS.

Thus, by displaying the group position information on the display unit 7 of the vehicle-mounted device 2 or the display unit 15 of the smartphone 11, it is possible to know at a glance where each member of the group including itself is currently located. It can be used effectively for meeting in groups. In the example of the present embodiment, Mr. A who is the pick-up person can know where Mr. C who is picking up is now, and similarly, Mr. C who is the pick-up person will be picking up A You can find out where your vehicle is.

However, in the present embodiment, when the time required until the event start time is relatively long, for example, more than 1 hour, for example, only the vague position information with low accuracy of each member is displayed and the privacy of the user is protected. . The details of each member, that is, the exact position, can be known only when the event is close to the event start time, for example, within 15 minutes. Since the position notification accuracy is adjusted not according to the distance but according to the time, even if the user is near the meeting point related to the event, the detailed position is not notified to other members. In addition, since the adjustment of the position notification accuracy is automatically performed, it is needless to say that no operation is required for the user.

The sequence diagram of FIG. 5 shows a processing procedure related to message transmission. First, in the management server 21, a message transmission condition registered in advance is acquired in step B21. In the next step B22, a request for information necessary for determining the message transmission condition is transmitted to both the on-vehicle device 2 of A and the smartphone 11 of C. In the vehicle-mounted device 2, when a request for information necessary for determining the message transmission condition is received in step A21, an information list necessary for determining the message transmission condition is transmitted to the management server 21 in step A22. . Also in the smartphone 11, when a request for information necessary for determining the message transmission condition is received in Step C21, an information list necessary for determining the message transmission condition is transmitted to the management server 21 in Step C22.

In the management server 21, the information list required for message transmission condition determination is received from both the onboard equipment 2 and the smart phone 11 in step B23. Then, in the next step B24, it is determined whether or not the received information matches the message transmission condition. As a specific example, for example, whether the estimated arrival time at the destination is later than the meeting time, or the person to be picked up in Mr. A's vehicle, in this case, the distance to Mr. C is within 700 m and the vehicle speed is, for example, It is determined whether it is 0 km / h. If the message transmission conditions are not met (No in step B24), the processing from step B21 is repeated.

On the other hand, if the received information matches the message transmission conditions (Yes in step B24), the message is transmitted to the registered destination, for example, Mr. C's smartphone 11 in step B25. In this case, for example, when Mr. A is late at the meeting time, a message indicating that the user is late at the meeting time is transmitted to Mr. C's smartphone 11. Alternatively, for example, when Mr. A comes close to the meeting place, which is the destination, a message indicating that he will soon arrive at the meeting place is transmitted to Mr. C's smartphone 11. In these cases, the in-vehicle device 2 side of Mr. A corresponds to the message transmission source.

In Mr. C's smartphone 11, when the message is received in Step C23 and then Mr. C opens the message, the message read information is transmitted to the management server 21 in Step C24. In the management server 21, when the message read information from the smartphone 11 is received in step B26, the message read information, that is, Mr. C, is sent to the in-vehicle device 2 of A who is the transmission source in step B27. A response indicating that the message has been read is sent or returned. In the vehicle-mounted device 2, the message already-read information is received in step A 23, and in step A 24, the fact that Mr. C has read the message is displayed on the display unit 7.

The sequence diagram of FIG. 6 shows a processing procedure related to function deactivation processing at the time of event completion. Here, when Mr. A's vehicle arrives at the destination and Mr. C's pickup is completed, it is determined that Mr. C has boarded in the vehicle-mounted device 2, and the passenger information is stored in the management server in step A31. 21 is transmitted. In the management server 21, when the passenger information is received in step B31, it is determined whether or not the event is completed in the next step B32. If the event has not been completed (No in step B32), the processing from step B21 is repeated.

If the management server 21 determines that the event has been completed (Yes in step B32), the process proceeds to step B33. In Step B33, a message indicating that the event has been completed, that is, Mr. C has been picked up, is transmitted to the registered communication terminal device, in this case, the member other than the member, for example, the parent communication terminal device 43 of Mr. C. The communication terminal device 43 receives the message at step D31. In the management server 21, a completion notification is transmitted to the vehicle-mounted device 2 and the communication terminal device 43 in step B34. The communication terminal device 43 receives the completion notification at step D33. In the vehicle-mounted device 2, the process, that is, the event ends when the completion notification is received.

As described above, according to the position information sharing system 1 of the present embodiment, the following excellent effects can be obtained. That is, the position notification accuracy of the member position information distributed from the management server 21 to the vehicle-mounted device 2 and the smartphone 11 is low in accuracy when the required time is long according to the required time to the event start time, and the required It is automatically changed so that the accuracy becomes higher as the time becomes shorter. As a result, the position information can be shared among the group members, and privacy can be effectively protected without a troublesome operation by the user.

At this time, as a member position information with low accuracy, a block of a municipality as an administrative division where the

mobile devices

2 and 11 exist is notified. Thereby, only sufficiently rough position information is provided for the position of the member, and privacy protection can be effectively achieved. Moreover, in this embodiment, when the management server 21 transmitted member position information, it was set as the structure which transmits the position data of each

mobile body apparatus

2 and 11 with the map data for display. As a result, the distributed data can be used for display as it is, display processing can be simplified, and the

mobile device

2 and 11 can be dispensed with no display map data.

In the present embodiment, a message transmission function for exchanging messages between the

mobile devices

2 and 11 between members or between the

mobile devices

2 and 11 and the management server 21 is provided. Accordingly, messages can be exchanged together with the position information at the same time, and a higher function can be added to make the user more convenient and convenient to use. The messages exchanged by the message sending function are messages related to the status of the event, such as departure, arrival, and lateness, so it is possible to send messages that are important to members or want to know together, and are easier to use It becomes.

Further, in the present embodiment, the message transmission function is configured to include a function of returning a response to the message to the transmission source. Thereby, the response to the message can be performed well, and the value as a system can be further increased. Since it also includes a function for sending a message to the communication terminal device 43 of a person outside the member, it becomes possible to send a necessary message to the members of the member's family and the like, thereby further enhancing convenience. it can.

In the above embodiment, the management server 21 transmits the position data of the

mobile devices

2 and 11 together with the display map data to the

mobile devices

2 and 11 as member position information. It is good also as a structure which transmits only the position data of each

mobile device

2 and 11 as position information. According to this, the member position information can be displayed so as to be superimposed on the display map data provided on the

mobile device

2 or 11 side, and the load of data communication with the management server 21 can be reduced. I can finish it.

In the above embodiment, the position notification accuracy is adjusted in three stages, but it is also possible to adjust in two stages or four or more stages, and various changes can be made in the time division and the like at that time. Moreover, in the said embodiment, although the smart phone was employ | adopted as a portable communication terminal, if it is not only a smart phone but a portable apparatus with a communication function, a mobile telephone, a tablet terminal, a portable navigation apparatus, etc. may be sufficient. In addition, it is needless to say that various changes can be made to the hardware configuration of the smartphone, the vehicle-mounted device, and the management server.

In the above embodiment, in reporting member position information with low accuracy, a block of a municipality is adopted as an administrative division where a mobile device exists in consideration of both protection of privacy and convenience as a group. I tried to do it. However, the present invention is not limited to this, and may be appropriately selected within a range that satisfies the above-described compatibility, for example, according to the scale of the displayed map, the display magnification, and the like.

Although the present disclosure has been described based on the embodiments, it is understood that the present disclosure is not limited to the embodiments and structures. The present disclosure includes various modifications and modifications within the equivalent range. In addition, various combinations and forms, as well as other combinations and forms including only one element, more or less, are within the scope and spirit of the present disclosure.

Claims

A mobile device (2, 11) comprising an in-vehicle device (2) provided in a vehicle on which each member constituting the group rides or a portable communication terminal (11) possessed by each member, and communication with these mobile devices A location information sharing system (1) configured to include a possible management server (21) and capable of executing a location information sharing function for sharing location information among the members when a predetermined event is executed. And
The mobile device is:
Own device position detecting device (5, 13) for detecting the position of the own device;
Transmitting devices (3, 12) for transmitting the own device position information detected by the own device position detecting device to the management server;
A receiving device (3, 12) for acquiring member position information, which is position information of a mobile device of each member constituting the group, from the management server;
A display device (7, 15) for displaying the member position information on a map screen;
The management server
A collection device (23a) that collects position information from each mobile device;
A distribution device (23b) for transmitting the member position information to each mobile device constituting the group;
According to the time required until the event start time, the position notification accuracy of the member position information is automatically changed so that the accuracy is low when the required time is long and the accuracy becomes higher as the required time becomes shorter. A position information sharing system comprising a notification accuracy adjusting device (28).
The location information sharing system according to claim 1, wherein the distribution device of the management server transmits the location data of each mobile device together with the map data for display as the member location information to each mobile device.
The position information sharing system according to claim 1, wherein the distribution device of the management server transmits position data of each mobile device as the member position information to each mobile device.
The position information sharing system according to any one of claims 1 to 3, wherein the notification accuracy adjusting device of the management server notifies a block of an administrative district in which the mobile device is present as low-precision member position information.
The location information sharing system according to any one of claims 1 to 4, wherein the management server includes a message transmission function for exchanging messages with the member mobile devices.
The position information sharing system according to claim 5, wherein the message exchanged by the message transmission function is a message related to a status for the event.
The position information sharing system according to claim 5 or 6, wherein the message transmission function includes a function of returning a response to the message to the transmission source.
The position information sharing system according to any one of claims 5 to 7, wherein the message transmission function also has a function of transmitting a message to a communication terminal device of a person outside the member.