KR101689040B1 - Mobile terminal for position tracking, server and position tracking system - Google Patents

Abstract

The present invention provides real-time location tracking using a WI-FI and GPS system to effectively provide location information of a target child to a parent or a related public contribution when an emergency such as abduction or kidnapping occurs in a way This is to provide a service that can cope with this problem. It has the effect of tracking location regardless of where the target child is in the classroom, and it can guarantee the accuracy of the position tracking that GPS has even in the outdoor (first state) There is an effect that can be. In addition, it is used not only for the data of position calculation by attaching the acceleration sensor but also the acceleration sensor is operated when the target child is kidnapped and moved in the car to provide the SOS signal and position information to the target child's parents and related institutions in real time There is an effect that can be. In addition, there is an effect that screen information on a protection object can be provided in association with a network camera or a CCTV.

Description

[0001] MOBILE TERMINAL FOR POSITION TRACKING, SERVER AND POSITION TRACKING SYSTEM [0002]

The present invention provides a service capable of providing location information of a target child to a parent or a related public institution effectively in the event of an emergency such as kidnapping or kidnapping that may occur in the way of a child's arrival and departure by real- .

In recent years, as crimes and misbehavior of children, such as kidnapping and kidnapping, have increased, parents with children have had to wait patiently for their children when they go out. In order to relieve the anxiety, when the children go out, they give a mobile phone to talk with their child from time to time or go out with their parents.

On the other hand, as a service related to the location tracking of a person, there is known a technique of tracking a location using a mobile phone and a technique of tracking a location using a GPS terminal.

However, when using a mobile phone, it is difficult to accurately track the location, and it is not suitable for young children because the mobile phone must be carried. Also, in case of the location tracking using the GPS terminal, it is necessary to have a separate GPS terminal. There is a limited problem.

The technology to solve this problem is to provide a location tracking service of a child using GPS or ZigBee.

In the case of GPS, since the location tracking service is not available in the indoor (second state), there is a problem that it is difficult to grasp the position of the target student when the student moves in the classroom or is exposed to the crime.

1 is a conceptual diagram of a child protection system based on Zigbee.

The Zigbee terminal 11 sends a signal to the ZigBee reader 12 and the ZigBee reader 12 communicates with the server 15 via the ZigBee network 13 and the gateway 14, Transmits the location information to the related organization (17), the parent PC (18), or the parent mobile phone (19). In this case, the position is traced using the RSSI (Received Signal Strength Indication) method.

However, in the case of RSSI through ZigBee, when using the fingerprinting method which is most accurate, it is necessary to maintain a distance of 30 m between the reader to maintain accuracy of 2 to 5 m. However, if the distance exceeds 100 m, It is impossible to guarantee an accuracy of 30 m or more. Therefore, although the ZigBee reader has to be installed densely, there is a problem that the accuracy of the position tracking can be improved.

In addition, as a method of calling for an emergency, a method used in a child safety service is a child safety zone, and when a person leaves a certain area, an event is generated by using the SOS button, thereby providing location information to a parent or a related public institution So as to cope with this problem. However, there is a problem in that when a target child can not operate the SOS button and is kidnapped and is caught in the car of a criminal and leaves the safety zone, if an emergency event occurs, the position can not be tracked after the emergency event.

Also, even if the location information of the tracking object is known, it is difficult to know exactly what the emergency situation is in the SOS since only the status of the tracking object is detected as the location information.

In order to solve the above problems, it is an object of the present invention to enable indoor and outdoor real-time location tracking using a portable terminal having a GPS module and a Wi-Fi module. Through this, it is possible to track the location of the object anywhere in the room, and it is intended to ensure the accuracy of the position tracking of the GPS even with the built-in GPS. In addition, it is used not only for data of position calculation by attaching an acceleration sensor but also for providing SOS signal and position information to the parent and related institutions of the target in real time by operating the acceleration sensor when the target is abducted and moved in the car . The object of the present invention is to provide screen information about a protected object in association with a network camera or a CCTV.

A portable terminal for position tracking according to an embodiment of the present invention includes a first module for receiving satellite position information; And a second module that scans an AP located nearby and receives network identification information from at least one AP, wherein the location status of the portable terminal based on the network identification information and the received signal strength information from the AP is an indoor In this case, the received network identification information and received signal strength information are transmitted to the server. If the location status is outdoor, the satellite position information is transmitted to the server

Also, an apparatus for providing a location tracking service according to an exemplary embodiment of the present invention is a service providing apparatus including: a receiving unit for receiving network identification information, received signal strength information, or satellite position information of a neighboring AP from a portable terminal; And a location calculation unit for calculating the location of the portable terminal using the network identification information and the received signal strength information of the received neighboring AP when the location status of the portable terminal is indoor.

The location tracking system according to an embodiment of the present invention scans a neighbor AP to receive network identification information of at least one AP, and when the location state based on the received identification information and the received signal strength is indoor, And transmits the satellite position information when the mobile terminal is outdoors; An AP for transmitting at least one of network identification information, received signal strength information, and satellite position information transmitted from the portable terminal to a location tracking service providing apparatus; And a server for calculating the location of the portable terminal based on information received from the AP and whether the location status of the terminal is indoors and providing the calculated location information upon request of the client device.

According to the embodiment of the present invention, it is possible to track the location of a protected child anywhere in the room, and it is possible to guarantee the accuracy of position tracking that the GPS has even outdoors by incorporating GPS. In addition, it is used not only for the data of position calculation by attaching the acceleration sensor but also the SOS signal and position information to the parents and related institutions of the target child by providing the position information in real time by activating the acceleration sensor when the child to be protected is kidnapped and moved in the car There is an effect that can be done. In addition, there is an effect that screen information on a protection object can be provided in association with a network camera or a CCTV.

1 is a block diagram of a ZigBee location tracking system.
2 is a block diagram of a position tracking system according to an embodiment of the present invention.
3 is a block diagram of a portable terminal according to an embodiment of the present invention.
4 is a flowchart illustrating an operation of the portable terminal according to an exemplary embodiment of the present invention.
5 is a block diagram of an apparatus for providing a location tracking service according to an embodiment of the present invention.

Hereinafter, a position tracking system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a block diagram of a position tracking system according to an embodiment of the present invention, and FIG. 3 is a block diagram of a portable terminal according to the present invention.

The portable terminal may be a portable terminal for location tracking and may be an RTLS TAG (Real Time Location System TAG) 20 according to an embodiment of the present invention.

The RTLS TAG 20 includes a first module for receiving satellite position information and a second module for receiving network identification information from the AP. Here, the first module may be a GPS module 302 that receives GPS information from a satellite, and the second module may be a WI-FI module 301 as a communication module for short-range wireless communication with an access point (AP) .

Accordingly, the RTLS TAG 20 and the AP may be connected by short-range wireless communication, e.g., WiFi, but are not limited thereto. Here, short-range wireless communication refers to a communication method having coverage within a range of several tens of meters from an AP.

The AP and the location tracking service providing apparatus may be connected by wire or wireless. The AP may be a wireless AP 22 according to one embodiment of the present invention.

The apparatus for providing location tracking service according to the present invention may be a server connected to the wireless AP 22 and the Internet network 23 and is hereinafter referred to as an integrated management server 26. [

The integrated management server 26 can receive location information, emergency signals, acceleration information, etc. from the RTLS TAG 20 through the wireless AP 22 through the receiver. The receiving unit may be a TCP / IP interface 57 based on the Internet network.

The integrated management server 26 may include a location calculation unit for calculating the location of the RTLS TAG 20 and the location calculation unit may be a server included in the integrated management server 26 according to an embodiment of the present invention, Hereinafter, the RTLS server 24 is referred to.

In addition, the integrated management server 26 may include a camera section for receiving a photographed image from a network camera, which may also be a server included in the integrated management server 26 according to an embodiment of the present invention, Camera server 25 ".

The integrated management server 26 can transmit the screen shot by the network camera corresponding to the location information of the RTLS TAG 20 and the location information calculated from the RTLS server 24 to the client device from the camera server 25. The client device may be a parent smartphone or mobile phone 27, a parent PC 28, and a location tracking device 29 of an associated institution.

Hereinafter, a configuration of a mobile terminal for operation and position tracking of a location tracking system according to the present invention will be described in detail with reference to FIG. 2 and FIG.

3, the RTLS TAG 20 basically includes an antenna 300, a WI-FI module 301, a GPS module 302 and an acceleration sensor 303, a CPU 304 and a battery 306 can do.

The RTLS TAG 20 may further include a display unit 305 capable of displaying a current status or a message. The RTLS TAG 20 includes a key operation unit 307 for inputting ON / OFF, YES, NO, and SOS signals, . ≪ / RTI >

The CPU 304 of the RTLS TAG 20 can be embedded in the Wi-Fi module 301 and can control the GPS module 302 and the acceleration sensor 303 using the built-in CPU 304.

The RTLS TAG 20 may be stored in various forms as a protection target of the position tracking system according to the present invention. For example, the RTLS tag 20 may include a name tag 308 having an LCD built therein, A built-in wrist watch 309, a child PAGER 310, and the like.

The RTLS TAG 20 transmits and receives signals to and from the wireless AP 22 installed in the vicinity of the school and the school, and transmits the location information to the Internet 23 To the integrated management server 26 via the network.

Thereafter, the integrated management server 26 analyzes the signal received from the RTLS TAG 20 to the TCP / IP interface 57, which is a receiver, and calculates the position through the RTLS server 25. [

If the received signal is an emergency SOS signal, an urgent message is transmitted to the client device, that is, the parent smartphone or the mobile phone 27, the parent PC 28, and the related organization 29 via the Wi-Fi and the telephone network Be able to cope with emergency situations.

The emergency signal is generated in the RTLS TAG 20 and the integrated management server 26 transmits an emergency message to the client device 27-29 when the emergency signal is received.

There are three cases when the emergency signal is generated.

First, it is out of safety zone. The range of the safety zone can be set in the integrated management server 26. If the location information is out of the safe zone range, the integrated management server 26 can transmit the emergency message to the client devices 27-29 .

Second, when the holder of the RTLS TAG 20 has pressed the emergency SOS button. When the emergency button of the RTLS tag is input, the RTLS generates an emergency signal, and when the integrated management server 26 receives the emergency signal, the emergency message is transmitted to the client device 27-29.

Thirdly, the acceleration sensor 303 automatically detects the acceleration of the vehicle and generates an emergency signal. In this case, it is assumed that the child is kidnapped and transferred to the car and can not press the emergency button.

The RTLS TAG 20 transmits the acceleration information sensed by the acceleration sensor 303 through the Internet network 23 using the WI-FI module 301 and the integrated management server 26 transmits the acceleration information sensed by the acceleration sensor 303 to the TCP / And receives it via the IP interface 57. Generates an emergency signal when the acceleration is measured at a reference value (preferably 10KM / H or more), and transmits the emergency message to the client device (27-29).

In addition, the location tracking system according to the present invention can support bidirectional communication services capable of message transmission and response between the client devices 27-29 and the integrated management server 26. [ In the case of the RTLS TAG 20 having the display unit 305, the integrated management server 26 can provide a text message service and transmit the text to the RTLS TAG 20.

In addition, when the key operation unit 307 is included, the holder of the RTLS TAG 20 can answer whether or not the character message is acknowledged through the Yes, No button operation. Accordingly, when the integrated management server 26 enters the emergency state due to the reception of the emergency signal, the emergency situation can be canceled by the operation of the PC 28 or the smartphone 27 of the parents.

Meanwhile, the location tracking system according to the present invention may further provide a geographical information service including a surrounding map and geographical information based on location information as a client apparatus.

Geographical information service is a service that provides screen information to provide location information, surrounding environment, maps, major facilities, and so on, and to visually recognize locations easily.

When a parent accesses the integrated management server 26 using the smart phone 27 or the like, the GIS (Geometric Information Service) and RTLS TAG (geographic information service) provided by the Display Application executed in the integrated management server 26 20), the geographical information service can be provided.

FIG. 4 is a flowchart showing the operation of the RTLS TAG 20. FIG.

The RTLS TAG 20 basically maintains the sleep mode 401 in order to reduce power consumption and operates by the Timer Event 402 in order to reduce power consumption. (Wake Up).

Thereafter, the RTLS TAG 20 wakes up the Wi-Fi module (403) and scans the neighbor AP (403). (SSID) of the neighboring AP at the time of scanning and acquires the received signal strength RSSI (404).

The RTLS TAG 20 determines whether the current location of the RTLS TAG 20 is outdoors (first state) or indoors (second state) using the collected SSID information and RSSI (405). The determination as to whether the room is indoors may include a method of determining that the location status is outdoors if the collected SSID and the location of the AP determined from the RSSI information and the distance to the AP are within a predetermined distance, and the RTLS TAG 20 itself The integrated management server 26 may use the RTLS server 25 to determine the information through the received information. Therefore, it is not limited to the judgment subject.

First, when it is determined that the position state is outdoors (first state), the RTLS TAG 20 wakes up the GPS module and controls the GPS module to perform an operation for obtaining the positional data information of the related GPS (406). Also, the AP may search for a nearby AP and transmit the calculated location information to the RTLS server (407).

Meanwhile, there are two methods for controlling the GPS module according to the present invention. There may be a method of receiving GPS data as it is, and there may be a method of always using AGPS technology to shorten the GPS position tracking accuracy and initial position tracking calculation.

According to the AGPS method, once the GPS server in the RTLS server receives the initial GPS data through the wired network, it transmits the information to the RTLS TAG 20. The transmitted GPS initial data is transmitted to the GPS module through the CPU in the RTLS TAG 20, and the GPS module calculates the position using the data without collecting the GPS satellite information. Through this, it is possible to calculate the position data of the protection object faster than the method of transferring the GPS data as it is.

Meanwhile, when it is determined through the AP-scanned SSID and RSSI information collection 404 that the indoor information is in the second state, the collected information is transmitted to the RTLS server in the integrated management server through the connection with the nearby AP, (407) so as to perform the indoor (second state) position tracking.

Thereafter, when the timer event cancellation signal is input (408), the sleep mode is returned to the sleep mode again, and the timer event is waited (401).

However, when the release signal is not inputted, an emergency signal is generated and an urgent message is sent via the integrated management server 26 to the parent PC 28, the parent smartphone 27, (410).

In the case where the timer event cancellation signal is not inputted, when a child or the like to be protected is pressed the SOS button, when acceleration exceeding the reference value is detected by the acceleration sensor operation or when the position information of the RTLS tag 20 is in the safety zone There may be a case of deviation. In this case, the RTLS TAG 20 does not return to the SLEEP mode, but collects the AP scan and RSSI information again (404), and continues the position tracking until the TIMER EVENT cancel signal is input.

5 is a detailed configuration diagram of the integrated management server 26, the RTLS server 25, and the camera server 24.

Referring to FIG. 5, processing and operation of data in each server will be described. The integrated management server 26, which is a location tracking service providing apparatus according to the present invention, manages a TCP / IP interface 57 as a receiving unit, an RTLS server 25 as a location calculation unit, and a camera server 24 as a camera And may relay the communication between the client devices 27-29.

The RTLS server 25 includes a RTLS engine 56 for calculating a position using the RSSI value, a GPS server and a DB 55, an indoor location information DB 54 ) And the RTLS middleware 53.

When the RTLS engine 56 determines that the positional state of the RTLS TAG 20 is outdoors (first state) or when the position state determined by the RTLS TAG 20 itself is outdoors (first state) As you can see, GPS can be used to calculate location information.

If the location of the RTLS TAG 20 is indoors (second state), the RTLS engine 56 can statistically calculate the location using the electronic map DB collected in advance using the Fingerprint-based algorithm .

When there is no electronic map, the distance is calculated using the Prince formula, and the position of the RTLS TAG (20) in the room (second state) can be calculated by solving the triangulation formula using Least Square Method and Chan and Ho Method have.

In the case of the location information calculation method of the RTLS engine 56 as described above, in order to obtain high accuracy, the collected radio wave map itself must have characteristics.

Therefore, since the indoor (second state) can densely install the low-priced AP, the present invention applies this method only in the room (second state), and in the outdoor (first state) have.

Specifically, in the case of the RSSI method, a relatively reliable position accuracy can be calculated when an AP is installed on an average of about 30 m. However, in the case of the outdoor (first state), since the AP usually exceeds one million won by the case, the AP (less than 100,000 won) installed at intervals of 30m in the room (second state) can not be used and the number of installed units increases.

However, when the GPS is used in the outdoor (first state) as in the present invention, when the communication distance of the Wi-Fi RTLS TAG 20 is 200m in the outdoor (first state) It can be expected that the cost reduction is achieved.

Meanwhile, the camera server 24 periodically stores and manages images of the respective network cameras, and can transmit image information according to a request of the integrated management server 56. [

When the parent wants to view the image of the target child, the camera server 24 receives the location information of the RTLS TAG 20 and connects with the nearby network camera to transmit the image information of the child to be protected to the integrated management server 56 It can be transferred to the parent's smartphone and PC.

The application block 58 of the integrated management server 26 may include a display application 50, a client connection handler 51 and an integrated management application 52.

The display application 50 may provide a service for displaying the location of the RTLS TAG 20 on the screen to the client devices 27 to 29 in charge of the geographic information service, that is, the GIS (Geometry information service) service.

The client connection handler 51 handles when the client device such as the parent PC 28, the smart phone 27 and the location tracking device 29 of the related organization attempts connection to the integrated management server 26, And to transmit the network camera image to the client.

The integrated management application 52 processes the character service of the parent and transmits an urgent message to the corresponding client device 27-29 in case of an emergency SOS situation so that it can cope with it. Also, it is possible to register the range of safety zone and so on, so that the emergency SOS message can be transmitted to the corresponding client apparatus when the user leaves the specific area.

 The application block 58 is linked with the client connection handler 51 and the network camera 22 connected to the wireless AP to automatically select the corresponding network camera to process the image information, And controls the shooting information and transmission information of the network camera according to the request of the client.

The shooting information may include vertical, horizontal rotation angle, and zoom magnitude of the camera, and the transmission information may include resolution, image quality, sharpness, bit rate, frame rate, and screen size. Accordingly, the client can select the contents of the photographing information transmitted from the camera server and the size of the data transmitted per time in detail. This allows the client to more accurately grasp the current location, situation and surrounding environment of the protected object through the nearby camera screen.

The location tracking system according to the present invention may be implemented as a program for execution on a computer and stored in a computer-readable recording medium. Examples of the computer-readable recording medium include a ROM, a RAM, a CD- A magnetic tape, a floppy disk, an optical data storage device, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet).

The computer readable recording medium may be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner. And, functional programs, codes and code segments for implementing the above method can be easily inferred by programmers of the technical field to which the present invention belongs.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

20: RTLS TAG 21: WIFI network
22: wireless AP and network camera 23: internet network
24: camera server 25: RTLS server
26: Integrated Management Server 27: Parent Smartphone
28: Parent PC 29: Related organization
300: Antenna 301: WIFI module
302: GPS module 303: Acceleration sensor
304: CPU 305:
306: Battery 307: Key control unit
308: Nameplate 309: Wrist Watch
310: Children PAGER 50: DISPLAY APPLICATION
51: Client connection handler 52: Integrated management APPLICATION
53: RTLS middleware 54: indoor location information DB
55: GPS server and DB 56: RTLS engine
57: TCP / IP interface 58: APPLICATION block

Claims (17)

In a portable terminal of the RTLS TAG type,
A first module for receiving satellite position information;
A second module that scans an access point (AP) located nearby and receives network identification information from at least one AP;
An acceleration sensor for transmitting acceleration information obtained by sensing accelerations of a car to a second module to be transmitted to a server; And
And a CPU for controlling operations of the first module, the second module, and the acceleration sensor,
The CPU includes:
It is determined whether the current position state is indoor or outdoor,
The second module controlling the network identification information received from the AP having a strong received signal strength and the received signal strength of the AP among the APs located in the room if the location state is the room,
And a second module for controlling the second module to transmit the received satellite position information and the acceleration information to a nearby AP by operating the first module in the sleep mode when the position state is outdoor, . delete delete The method according to claim 1,
The portable terminal of the RTLS TAG type further includes a display unit,
Wherein the display unit displays at least one of a message transmitted from the server and location information of the RTLS TAG type portable terminal. A server for communicating with a portable terminal of the RTLS TAG type,
If the RTLS TAG type portable terminal is the indoor, receives the network identification information and the received signal strength of the AP from the RTLS TAG type portable terminal,
A receiver for receiving the satellite position information and the acceleration information obtained by sensing the acceleration of the vehicle from the RTLS TAG type portable terminal when the RTLS TAG type portable terminal is outdoors; And
And a location calculator for calculating a location of the RTLS TAG type portable terminal using the network identification information and the received signal strength of the received neighboring AP when the location status of the RTLS TAG type portable terminal is indoor,
Wherein the server transmits an emergency message to the client device when the mobile terminal of the RTLS TAG type is outdoors and the acceleration of the acceleration information is a reference value or more. 6. The method of claim 5,
Wherein the server further provides a geographical information service (GIS) including a surrounding map and geographical information to the client device based on the calculated location information. 6. The method of claim 5,
Wherein the receiving unit further receives a message from the client apparatus,
And the server transmits the received message to the RTLS TAG type portable terminal. 6. The method of claim 5,
And a camera unit for receiving a screen shot from a network camera corresponding to the calculated position information,
Wherein the server transmits the received screen to the client device at the request of the client device. 9. The method of claim 8,
The server controls the shooting condition of the network camera or the transmission condition of the photographed screen according to a request of the client device,
Wherein the photographing condition includes at least one of a horizontal and a vertical rotation angle and a zoom degree of the network camera, and the transmission condition includes at least one of a bit rate, a frame rate, an image quality, and a resolution of a transmitted image. And transmits the received network identification information and the received signal strength when the location status based on the received network identification information and the received signal strength is indoor, An RTLS TAG type portable terminal for transmitting satellite position information and acceleration information obtained by sensing acceleration of a vehicle when the position state is outdoors;
An AP for transmitting at least one of the network identification information, the received signal strength information, the satellite position information, and the acceleration information transmitted from the RTLS TAG type portable terminal; And
Calculating a position of the RTLS TAG type portable terminal using the received network identification information and the received signal strength when the location status of the RTLS TAG type portable terminal is indoor; And a server for calculating the position using the satellite position information and providing the calculated position information at the request of the client device,
Wherein the server transmits an emergency message to the client device when the received acceleration information is equal to or greater than a reference value. delete 11. The method of claim 10,
Wherein the server further provides the client device with a geographical information service (GIS) including a surrounding map and geographical information based on the calculated location information. 11. The method of claim 10,
The server receives the message from the client device, transmits the received message to the portable terminal in the form of RTLS TAG,
Wherein the RTLS TAG type portable terminal further comprises a display unit for displaying at least one of a message transmitted from the wireless recognition apparatus and a location of the RTLS TAG type portable terminal. 11. The method of claim 10,
Wherein the server further comprises a camera unit for receiving a screen shot from a network camera corresponding to the calculated position information,
Wherein the server transmits the photographed screen to the client apparatus upon request of the client apparatus. 15. The method of claim 14,
The server controls the shooting condition of the network camera or the transmission condition of the photographed screen according to a request of the client device,
Wherein the photographing condition includes at least one of a horizontal and a vertical rotation angle and a zoom degree of the network camera, and the transmission condition includes at least one of a bit rate, a frame rate, an image quality, and a resolution of a transmitted image. delete delete

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