KR20140079242A

KR20140079242A - Cell phone location tracing and tracing method

Info

Publication number: KR20140079242A
Application number: KR1020120148985A
Authority: KR
Inventors: 김세환
Original assignee: 김세환
Priority date: 2012-12-18
Filing date: 2012-12-18
Publication date: 2014-06-26

Abstract

According to one embodiment of the present invention, an input is received on a screen display unit to input or output from a cell phone or home. A central storage unit identifies the identity of a user or receives the result of an operation unit, temporarily stores the result, and transmits the result to the screen display unit. A signal generating unit generates a signal to a terminal which is lost or which a missing person has. A sensing unit senses the signal generated from the signal generating unit and stores the data. The operation unit uses a tracing method based on the data received from the sensing unit and provides a tracing operation method.

Description

TECHNICAL FIELD [0001] The present invention relates to a cellular phone location tracking and tracking method,

Embodiments of the present invention relate to techniques relating to location tracking of mobile phone terminals.

Recently, the possession of a smart phone or a mobile phone has led to an increase in research on various technologies related to such portable devices.

Especially, in case of smartphone, even though the loss is small and the price is low, it is necessary for the life, so the loss becomes serious when it is lost.

Recently, many cases of robbery such as kidnapping and disappearance have led to an increase in the number of investigations by tracking mobile phone terminals.

In this regard, there is a growing need for a technology that allows users to locate the exact location of a smartphone or cellular phone location tracking technology that has emerged in recent years.

Embodiments of the present invention provide a technique of detecting a signal of a mobile phone terminal and then passing the signal to a calculation unit based on a signal from a sensing unit to calculate a position in a calculation unit and displaying a tracking result on a user's terminal.

In an embodiment of the present invention, a central display unit for inputting or outputting data in a mobile phone terminal or a home, a central storage unit for obtaining a user's identity or receiving a result of the operation unit, temporarily storing the data, A signal generation unit for generating a signal to a terminal held by a lost or missing person, a sensing unit for sensing a signal generated by the signal generation unit and storing the data, a tracking technique based on data received from the sensing unit, And an operation unit for performing the operation.

The embodiments of the present invention can provide a technique of detecting a signal of a mobile phone terminal and then passing the signal to a calculation unit based on a signal from a sensing unit to calculate a position in an operation unit and displaying a tracking result on a user terminal .

1 is a diagram illustrating a system structure according to an embodiment of the present invention.
2 is a flowchart illustrating a method of tracking a location according to an embodiment of the present invention.
3 is a diagram illustrating an example of a location tracking method according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited or limited by the embodiments. In addition, the same reference numerals shown in the drawings denote the same members.

1 is a diagram illustrating a system structure according to an embodiment of the present invention.

1, the position tracking system 110 includes a signal generator 111, a sensing unit 112, an operation unit 113, a central storage unit 114, and a screen display unit 115.

Here, the location tracking method 110 can be used when a mobile phone terminal is lost or when a missing person is found.

The signal generating unit 111 is a terminal that is a lost cellular phone terminal or generates a signal to a mobile phone terminal of a missing owner.

The sensing unit 112 is a base station that senses a signal generated by the signal generating unit 111 and is a base station that senses a signal using the base station and stores data of the sensed signal.

The operation unit 113 receives the data stored by the sensing unit 112 and performs a calculation through a tracking technique to produce a tracking result.

The central storage unit 114 receives the identity input from the screen display unit 115 and confirms the owner relationship of the owner or owner of the signal generation unit 111. When the operation result is received by the operation unit 113, And transmits it to the screen display unit 115.

The screen display unit 115 is a terminal or a PC receiving input from a mobile phone terminal or a home through the screen display unit.

2 is a flowchart illustrating a method of tracking a location according to an embodiment of the present invention.

In step S210, a request of the user of the screen display unit is received.

In step s220, the central storage unit confirms the relationship of the user received from the screen display unit with the device which is requested to track the location and location of the user.

In step s230, the information received from the screen display unit is checked in the central storage unit, and if the identity is confirmed, the process returns to the first step (S210) if the identity is not confirmed in the next step.

In step s240, a signal from the signal storage unit is sensed by the sensing unit.

In step s250, if the signal is detected in the signal storage unit, the process proceeds to the next step or returns to the first step S210.

In step s260, the data of the signal detected by the base stations of the sensing unit is transmitted to the operation unit.

In step S270, the calculator calculates location data received from the base stations and estimates the location data using a location tracking technique.

In step s280, the position estimated by the calculation unit is transmitted to the central storage unit.

In step s290, the center storage unit storing the data received from the operation unit transmits the tracking result to the screen display unit.

3 is a diagram illustrating an example of a location tracking method according to an embodiment of the present invention.

The tag described below refers to a lost terminal, that is, a signal generating unit, and the AP corresponds to a detecting unit as a base station receiving a signal.

310, the location estimation using received signal strength provides a relatively low position estimation accuracy and a low position estimation stability. However, since the structure of the apparatus for using the received signal strength is simple, and the conventional short-range wireless communication techniques take advantage of the received signal strength information, it is widely used in the field related to the location tracking. The shape of the antenna that is displayed on the liquid crystal of the mobile phone to indicate the received signal strength is called the received signal strength bar. Generally, the power received from a mobile phone usually moves between -108dBm and -20dBm, and the number of vertical bars indicating the strength of received power differs slightly for each terminal manufacturer. Occasionally, the number of vertical bars of the antennas displayed on the mobile phone in a single outward location is high, but there are cases where the call does not work well. This is because the noise received by the original signal is large, Signal and strong transmission signal of other mobile phones are relatively large. Most of the wireless communication technologies used in the 2.45GHz band including the wireless LAN also require a reception sensitivity of about -100 dBm. However, a low sensitivity of -100dBm is merely a sign that the signal can be received, and the received signal strength value received in this region is often unavailable for actual position estimation because of the large variation. Therefore, it is important to find the propagation model of the received signal strength in the location tracking system using the received signal strength. The technique described in the drawings uses a method of measuring an angle between an antenna and a tag. The angular measurement method does not use a general antenna. It is necessary to use a smart antenna that detects the reception angle of the tag, and it is expensive not only because of the cost of development and production but also because of the price of one antenna.

In the method 320, the time difference between the signals transmitted from the tags is measured and converted into distances to use the positions for estimation. As shown in the figure, the position of the tag is calculated by using the points where the flight time difference between the two APs is constant. As for the position value on the two-dimensional position, there is a problem of solving the two-dimensional equation, which has a complicated calculation process and a large calculation amount. There must also be a way to provide a high precision starter between the tags.

330 is a real-time location tracking technique that uses a trilateration method. The trilateration method is a measurement method of obtaining the position of a triangle by observing the length of a side instead of a horizontal angle in a triangle network. Location estimation by trilateration consists of two steps: distance measurement and trilateration. Among them, trigonometry is not an issue because it is algorithmically implemented if only the distance value is given. On the other hand, since there are various ways of measuring the distance, it is important to understand various distance measurement methods in developing or using the positioning system. In Figure 330, distance and time between reader and tag are used to calculate distances using triangulation and estimate tag location.

Embodiments according to the present invention may include the program command data file data structure alone or in combination with the computer readable medium. The program instructions recorded on the medium may be those specially designed and constructed for the present invention Examples of computer readable media for a computer software person skilled in the art include, but are not limited to, magnetic optical media such as hard disk floppy disks and magnetic storage media such as magnetic tape, magnetic optical media such as floppy disks, and ROMAM flash memory Examples of program instructions include high-level language code that can be executed by a computer using an interpreter, as well as machine code, such as those produced by a compiler. The present invention can be configured to operate as one or more software modules in order to perform the operations of the present invention and vice versa. As described above, according to the present invention, Various modifications and variations may be made thereto by those skilled in the art to which the present invention pertains. Accordingly, the spirit of the present invention is not limited to the embodiments described above, and all of the equivalents or equivalents of the patent claims, as well as the patent claims, are included in the scope of the present invention

110: Location tracking method
111: Signal generator 112:
113: operation unit 114: central storage unit
115:

Claims

A screen display unit for inputting or outputting from a mobile phone terminal or a home;
A central storage unit corresponding to a database for grasping the identity of the user or receiving the result of the operation unit for a while and then passing the result to the screen display unit;
A signal generator for generating a signal to a terminal of a lost or missing person;
A sensing unit for sensing a signal generated by the signal generator and storing the data;
An operation unit for performing a tracking operation using a tracking technique based on data received from the sensing unit;

The method according to claim 1,
The screen display unit
When the mobile phone terminal or the home is input through the normal screen display unit,

The method of claim 1, wherein
Wherein the central storage unit receives the identity input from the screen display unit and confirms the owner relationship of the owner or the owner of the signal generating unit, stores the data temporarily when the operation result is received in the operation unit, and transmits the stored data to the screen display unit

The method of claim 1, wherein
The signal generating unit may be a lost cell phone terminal or a terminal that generates a signal to a mobile phone terminal of a missing owner

The method of claim 1, wherein
The sensing unit is a base station that senses a signal generated by the signal generating unit. Since there is no base station installed nationwide, the base station senses a signal and stores data of the sensed signal.

The method of claim 1, wherein
Wherein the operation unit receives data stored by the sensing unit and performs calculation through a tracking technique to produce a tracking result