JP3168490B2 - Mobile station position monitoring system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile station position monitoring system in which a mobile unit such as a child is used as a mobile station and its position is constantly monitored and grasped by a base station such as a lost child center. It is not limited to
It is intended for objects that move with time.

[0002]

2. Description of the Related Art Conventionally, an AVM (Automatic Vehicle)
There is known a mobile station position monitoring system called Monitoring System). In the AVM system, the position and activity status (actual, empty, or working) of a mobile station such as a running vehicle is automatically collected by a base station such as an operation management center using radio waves, and the base station is used as the base station. Is a system that can always be grasped.

[0003]

In recent years, with the advent of large theme parks and the like, the number of small children getting lost has increased. The only way to find a lost child in such a wide area is to call it out on the broadcast, and it is not easy to find a child once it has been lost. Recently, portable GPS (Global Positio
ning System) Receiver is on sale. Even if this GPS receiver is used, only the position of the person carrying the GPS receiver can be determined, and it does not help to search for a lost child. Furthermore, G
If the PS receiver is in a place where radio waves from communication satellites do not reach, such as in a building, there is a problem that positioning cannot be performed. Here, application of the above-mentioned AVM method using a lost child as a mobile station as described above is conceivable, but there is a similar problem that positioning cannot be performed if the child enters a building or the like.

Therefore, the present invention has been made to solve such a problem, and it is necessary to constantly monitor and ascertain the position of a child's mobile station at a base station, and to immediately find out when a child is lost. The goal is to provide a mobile station location monitoring system that can be used.

[0005]

In a mobile station position monitoring system according to the present invention, a mobile station calculates a position of the mobile station, and a unique ID (Identification) assigned to each of the mobile stations. Mobile station data generating means for generating complete data relating to the position at the time of completion of the calculation by the positioning means or incomplete data relating to the position when the calculation is impossible at the positioning means to identification data such as Mobile station data transmitting means for transmitting data generated by the mobile station data generating means to the base station, the area station installed in an area where the position of the mobile station can not be calculated by the positioning means, An area station data receiving only the data to which the incomplete data relating to the position of the mobile station transmitted from the mobile station by the mobile station data transmitting means is added. And data receiving means, among the data received by the area station data receiving means, in the area
Wherein an area station data generating means for generating data by adding data relating to the position indicating that the mobile station is, and Area station data transmission means for transmitting data generated in the area station data generating unit to the base station Comprising, the base station comprises a base station data receiving means and display control means for receiving data transmitted from the mobile station data transmitting means or the area station data transmitting means,
The base station identifies the mobile station from the data received by the base station data receiving means, and identifies the mobile station with unique identification data.
The distance or azimuth to the mobile station is displayed on the display means by inputting data .

[0006]

According to the present invention, of the data transmitted from the mobile station, the data including the unique identification data given to the mobile station and the data relating to the position of the mobile station, the data relating to the position of the mobile station when the calculation is completed. Complete data is transmitted directly from the mobile station to the base station. On the other hand, if the location of the mobile station is in an area where the calculation cannot be performed, and the data transmitted from the mobile station is incomplete data when the data regarding the location of the mobile station is incalculable, the In place of the incomplete data relating to the position of the mobile station, the station generates data to which data relating to the position indicating that the mobile station is present in the area is added and transmitted from the area station to the base station. These data are both received by the base station,
Since complete data relating to the location is added to the identification data of the mobile station, the mobile station is specified at the base station and the location is displayed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to specific embodiments.

FIG. 1 is a schematic diagram showing a mobile station position monitoring system according to one embodiment of the present invention. In this embodiment, the mobile station is incorporated in a cap of a visitor such as an amusement park or the like, and is carried by the base station. The management building that receives the communication from the mobile station and constantly monitors and grasps the position of the mobile station. The case of managing the visitors in the park will be described.

In FIG. 1, 1 is a base station, 2 is a mobile station that is carried and communicates with the base station 1, and 3 is a mobile station 2 in a building 4 as an area where radio waves of the communication satellite 50 cannot reach the mobile station 2. When there is, the transmission from the mobile station 2 is received and the base station 1
Area station to send to FIG. 2 is an overall configuration diagram showing a mobile station position monitoring system according to one embodiment of the present invention.

The base station 1 comprises a receiving means 10 constituting a base station data receiving means for performing wireless or optical communication, etc., and a display control means connected to the receiving means 10 for analyzing and displaying data received by the receiving means 10. Controller 11 that constitutes
And display means 12 connected to the controller 11. The mobile station 2 includes a transmitting unit 21 constituting a mobile station data transmitting unit for performing wireless or optical communication or the like, a GPS receiving unit 20 and a GPS unit constituting a positioning unit for calculating the position of the mobile station 2.
Mobile station data generating means for generating data obtained by adding ID data unique to each mobile station 2 as identification data given to the mobile station 2 to the data on the position of the mobile station 2 obtained by the PS receiving means 20 It comprises a controller 22 to configure. The area station 3 is installed in a place where GPS radio waves do not reach, such as in the building 4. The area station 3 includes an area station data receiving means 30 for receiving communication from the mobile station 2, and a mobile station 2 of the received data.
A controller constituting an area station data generating means for generating data for transmitting to the base station 1 by adding a signal indicating that the mobile station 2 is present in the building 4 in place of incomplete data on the position of 32, a transmitting means 31 constituting an area station data transmitting means for transmitting the data generated by the controller 32 to the receiving means 10 of the base station 1.

Here, the mobile station 2 usually has G
The PS receiving means 20 receives radio waves from a plurality of communication satellites 50 and calculates the current position of the mobile station 2. The plurality of communication satellites 50 are artificial satellites that output a frequency for positioning, and measure the position of a mobile station from the positions of the satellites. As is well known, three or more satellites are required to obtain positioning data. Satellites are used. The mobile station 2 of the present embodiment receives radio waves from three communication satellites 50 as shown in FIGS.
The distance between each communication satellite 50 and the mobile station 2 is obtained from the propagation time of these radio waves. Each communication satellite 50 operates in a predetermined orbit orbiting the earth, and calculates the position of the mobile station 2 on the earth from the position and distance of each communication satellite 50 on the orbit to specify the position. The detection error is usually about 100 m. In this way, the mobile station 2 obtains the latitude / longitude data, that is, the data on the position, by the GPS receiving means 20.

The controller 22 connected to the GPS receiving means 20 of the mobile station 2 generates data obtained by adding ID data unique to the mobile station 2 to the data relating to the position obtained by the GPS receiving means 20. Data relating to the position where the unique ID data is added to the mobile station 2 is transmitted from the transmission means 21 at regular time intervals. At this time, when the data transmitted from the transmitting means 21 of the mobile station 2 is received by the receiving means 10 of the base station 1 in a good reception state,
The position of the mobile station 2 is determined by I
The D data is recognized and displayed on the screen of the display unit 12.

On the other hand, when the mobile station 2 enters the building 4, the GPS receiving means 20 of the mobile station 2 cannot capture the communication satellite 50, and the data transmitted from the transmitting means 21 It becomes difficult to reach the receiving means 10 of the station 1. To cope with this situation, the area station 3 is installed in the building 4. The area station 3 is equivalent to the receiving means 10 provided in the base station 1 and has a receiving means 30 whose reception range is limited to a predetermined area in the building 4 (in a single building 4 as necessary). Multiple installations). Therefore, when the mobile station 2 enters the building 4, the data transmitted from the transmission unit 21 of the mobile station 2 is once received by the reception unit 30 of the area station 3. Then, the controller 32 of the area station 3
As a result, data indicating that the mobile station 2 is in the building 4, that is, data in which data relating to the position indicating that the mobile station 2 is in the building 4 is added to the ID data of the mobile station 2 is generated. This data is transmitted from the transmission means 31 of the area station 3. Since the data transmitted from the transmitting means 31 of the area station 3 is well received by the receiving means 10 of the base station 1, the mobile station 2 in the building 4 is specified by the controller of the base station 1 and its position is determined. It is displayed on the screen of the display means 12.

Next, the mobile station 2 used in this embodiment
3 will be described based on the flowchart of FIG.

First, initialization is performed in step S11, and the process proceeds to step S12, in which data relating to the position of the mobile station 2, which is positioning data from the GPS receiving means 20, is read. Next, proceeding to step S13, the positioning data read in step S12 is data representing the complete position of the mobile station 2, and the current position of the mobile station 2 indicates whether positioning calculation by GPS is possible. Is determined. If it is determined in step S13 that the positioning operation is possible and the positioning data by the GPS receiving means 20 is complete, the process proceeds to step S14 and proceeds to step S12.
The unique ID data assigned to the mobile station 2 is added to the positioning data read in step (1). On the other hand, in step S13, G
If it is determined that the positioning data by the PS receiving means 20 is incomplete data and positioning is impossible, the process proceeds to step S15,
The ID data of the mobile station 2 is added to the incomplete data. After the process in step S14 or S15, the process proceeds to step S16, where the data transmission process in step S14 or step S15 is executed, and the process returns to step S12, and the same process is repeated.

Next, the processing procedure of the controller 32 of the area station 3 used in this embodiment will be described with reference to the flowchart of FIG.

First, initialization is performed in step S21, and the process proceeds to step S22, where the receiving means 30 determines whether or not there is received data. In step S22, the process waits until there is received data, and proceeds to step S23, where it is determined whether or not the received data includes incomplete data of the mobile station 2 that cannot perform positioning. In step S23, the process waits until there is incomplete positioning data in the received data, and proceeds to step S24, where the mobile station 2 replaces the incomplete data on the position with data on the position of the area station in the building 4. Will be added. Thereby, data including the ID data of the mobile station 2 and the data related to the location of the area station is generated.
Next, the process proceeds to step S25, where the transmission process of the data generated in step S24 is performed, and the process returns to step S22, and the same process is repeated.

Next, the base station 1 used in this embodiment
The processing procedure of the controller 11 will be described based on the flowchart of FIG.

First, initialization is performed in step S31, and the process proceeds to step S32, where the receiving means 10 determines whether or not there is received data. In step S32, the process proceeds to step S33 after waiting for the reception data, and a display process for displaying the reception data on the screen of the display unit 12 is performed. The process returns to step S32 and the same process is repeated.

As described above, the mobile station position monitoring system according to the embodiment of the present invention is a mobile station position monitoring system having a plurality of mobile stations 2 and a base station 1 communicating with the plurality of mobile stations 2. Station 2
GPS receiving means 20 which constitutes positioning means for calculating the position of the mobile station 2, and GP which is provided in the mobile station 2 and which constitutes the positioning means based on unique ID data given to each of the mobile stations 2.
A controller 22 constituting mobile station data generating means for generating data to which data relating to the position of the S receiving means 20 is added, and data generated by the controller 22 provided in the mobile station 2 and constituting mobile station data generating means. 21 that constitutes a mobile station data transmitting means for transmitting GPS signals to the base station 1, and the GPS receiving means 2 that constitutes a positioning means
Area station data reception, which is provided in the area station 3 installed in an area where the position of the mobile station 2 cannot be calculated due to 0, and receives data on the mobile station 2 transmitted from the transmission means 21 constituting the mobile station data transmission means The receiving means 30 constituting the means and the data received by the receiving means 30 constituting the area station data receiving means provided in the area station 3 replace the data relating to the position of the mobile station 2 in the area. It is generated by a controller 32 constituting the area station data generating means for generating data to which data relating to the position indicating that the mobile station 2 is present is added, and a controller 32 provided in the area station 3 and constituting the area station data generating means. Transmitting means 31 constituting an area station data transmitting means for transmitting the obtained data to the base station 1;
A receiving unit constituting a base station data receiving unit for receiving data transmitted from a transmitting unit constituting a mobile station data transmitting unit or a transmitting unit constituting an area station data transmitting unit; And a controller 11 constituting display control means for specifying the mobile station 2 from the data received by the receiving means 10 constituting the base station data receiving means and displaying its position on the display means 12. .

Accordingly, the mobile station 2 receives the radio wave of the communication satellite 50, inputs the positioning data of the latitude and longitude from the radio wave of the communication satellite 50, and moves to the data on the current position calculated by the GPS receiving means 20. The data to which the unique ID data given to the station 2 is added is transmitted to the base station 1. Here, when the mobile station 2 is in the building 4 or the like,
If the S receiving means 20 cannot supplement the communication satellite 50, data on the current position becomes incomplete. When such data is transmitted from the mobile station 2, the area station 3 in the building 4 receives it. Then, in place of the incomplete data on the position of the mobile station 2 among the data, data on the position of the area station 3 is added and transmitted to the base station 1.
Therefore, the data received by the base station 1 completely includes the ID data specifying the mobile station 2 and the data relating to the position, and the position of the mobile station 2 can be determined.

Therefore, in an amusement park or the like, it is possible for the visitors in the park to know at a glance how crowded the attractions are and how dense the passages are. As a result, it is possible to more accurately judge the timing of restricting the entrance to the building, and it is possible to operate safely, and it is also possible to operate efficiently by knowing unpopular attractions.

Although the above embodiment has been described assuming a fixed base station installed in a building, the function of the base station as shown in FIG. It can also be configured.

FIG. 6 is an external view showing an example in which the base station of the mobile station position monitoring system according to one embodiment of the present invention is a miniaturized portable display device 1A.

According to this, when a lost child (mobile station) occurs, it is known in advance from a key provided on the portable display device 1A, which is the portable base station, without relying on conventional indoor broadcasting. Enter the ID of the lost child (mobile station). Then, the distance to the lost child (mobile station) and its direction are displayed on the screen 12a of the portable display device 1A, and the lost child (mobile station) can be immediately found.

[0026]

As described above, according to the mobile station position monitoring system of the present invention, the mobile station is operated by the positioning means and the unique identification data given to each of the mobile stations by the positioning means. Mobile station data generating means for generating data to which data is added, and mobile station data transmitting means for transmitting the generated data to the base station; and the area station transmits data from the mobile station. Area station data receiving means for receiving, area station data generating means for generating data to which data relating to a position indicating that a mobile station is present in the area, and data generated by the area station data generating means to the base station. An area station data transmitting means for transmitting, and the base station receives data transmitted from the mobile station data transmitting means or the area station data transmitting means. Data receiving means and display means for displaying the data, and display control means for specifying the mobile station from the data received by the base station data receiving means and displaying the position of the mobile station. Can be positioned
Since data added to the identification data is generated regardless of whether it is impossible, the base station receives the data and receives it .
Identifying the mobile station from the received data,
The distance to the mobile station or the input of the identification data of
There is an effect that the monitoring of each mobile station can be reliably performed only by displaying the direction on the display means .

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a mobile station position monitoring system according to one embodiment of the present invention.

FIG. 2 is an overall configuration diagram showing a mobile station position monitoring system according to one embodiment of the present invention.

FIG. 3 is a flowchart showing control of a mobile station in the mobile station position monitoring system according to one embodiment of the present invention.

FIG. 4 is a flowchart showing control of an area station of the mobile station position monitoring system according to one embodiment of the present invention.

FIG. 5 is a flowchart showing control of a base station in the mobile station position monitoring system according to one embodiment of the present invention.

FIG. 6 is an external view showing an example in which the base station of the mobile station position monitoring system according to one embodiment of the present invention is a miniaturized portable display device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base station 2 mobile station 3 area station 10 receiving means 11 controller 12 display means 20 GPS receiving means 21 transmitting means 22 controller 30 receiving means 31 transmitting means 32 controller

Claims (1)

(57) [Claims] 1. A mobile station position monitoring system having a plurality of mobile stations and a base station communicating with the mobile station, a positioning means for calculating the position of the mobile station, Mobile station data generating means for generating data obtained by adding data relating to the position of the positioning means to the identification data, and mobile station data transmitting means for transmitting the data generated by the mobile station data generating means to the base station. A mobile station having, an area station data receiving means for receiving data about the mobile station transmitted from the mobile station data transmitting means, and a data received by the area station data receiving means.
Area station data generating means for generating data to which data relating to a position indicating that the mobile station is present in the area , and area station data for transmitting data generated by the area station data generating means to the base station An area station provided in the area where the position of the mobile station cannot be calculated by the positioning means; and receiving data transmitted from the mobile station data transmitting means or the area station data transmitting means. Base station data receiving means, and the mobile station is identified from data received by the base station data receiving means, and identification data unique to the mobile station is identified.
Displays the distance or direction to the mobile station by inputting data
And a mobile base station.