KR20060086480A - Wireless communication terminal and its method for providing of generating sos signal using acceleration sensing - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a wireless communication terminal having a rescue request signal generation function by acceleration detection and a method thereof.

2. The technical problem to be solved by the invention

According to the present invention, the wireless communication terminal detects the departure of the serviceable area and stores the last received location information (reference point), detects and stores the acceleration value at a predetermined cycle, and then stores the data according to a rescue request from the user. The present invention provides a wireless communication terminal and a method for generating a rescue request signal by acceleration detection for generating and transmitting a rescue request signal including current location information of the wireless communication terminal using a reference point and an acceleration value. In this.

3. Summary of the Solution of the Invention

The present invention provides a wireless communication terminal, comprising: wireless transmission and reception means for transmitting and receiving a signal wirelessly; Input means for receiving a distress signal generation request signal; Storage means for storing recent location information and acceleration values prior to leaving the service area; Acceleration sensing means for sensing acceleration of the wireless communication terminal; In response to detecting the departure from the service area from the received signal received through the radio transmission and reception means, the latest location information obtained before leaving the service area is stored in the storage means, and the acceleration detection means is operated to obtain at predetermined time intervals. A control means for storing the acceleration value in the storage means and then driving the position tracking means according to the rescue signal generation request signal received through the input means in a service unavailable state; And calculating the position of the wireless communication terminal using the latest position information and the acceleration value before leaving the service area stored in the storage means under the control of the control means, and then including the calculated position information. And the location tracking means for generating a request signal and sending it out through the radio transmission and reception means.

4. Important uses of the invention

The present invention is used in a wireless communication terminal.

Wireless communication terminal, acceleration, location information, rescue request signal, reference point

Description

Wireless communication terminal and its method for generating rescue request signal by acceleration detection and its method {Wireless communication terminal and its method for providing of generating sos signal using acceleration sensing}             

1 is a configuration diagram of an embodiment of a wireless communication terminal having a structure request signal generation function by acceleration detection according to the present invention;

2 is a diagram illustrating an embodiment of a process for generating a rescue request signal by sensing acceleration in a wireless communication terminal according to the present invention;

3 is a diagram illustrating an acceleration sensor in a wireless communication terminal having a structure request signal generation function by acceleration detection according to the present invention;

4 is a configuration diagram of another embodiment of a wireless communication terminal having a structure request signal generation function by acceleration detection according to the present invention;

5 is a flowchart illustrating a method for generating a rescue request signal by acceleration detection in a wireless communication terminal according to the present invention.

* Explanation of symbols on the main parts of the drawing

11: wireless transmission and reception device 12: central processing unit

13: codec 14: storage device

15: audio output device (speaker) 16: display device (LCD)

17: input device (keypad) 18: voice input device (microphone)

19: acceleration sensor 20: position tracking device

The present invention relates to a wireless communication terminal having a function of generating a rescue request signal by acceleration detection, and a method thereof, and more particularly, to the location information (reference point) received last by detecting an out of serviceable area of the wireless communication terminal. And stores the detected acceleration value at a predetermined period, and then generates and sends a rescue request signal including current location information of the wireless communication terminal using the stored reference point and acceleration value according to a rescue request from a user. The present invention relates to a wireless communication terminal and a method for generating a rescue request signal by acceleration detection.

In the present invention, a wireless communication terminal is a mobile communication terminal, a personal mobile communication terminal (PCS), a personal digital terminal (PDA), a smart phone, a next generation mobile communication terminal (IMT-2000), wireless communication while carrying an individual such as a wireless LAN terminal Say this is possible terminal. Hereinafter, a mobile communication terminal will be described as an example.

As the mobile communication system develops, the services provided by the mobile communication terminal are also being developed in various ways for the convenience of users. In particular, emergency call service using the Global Positioning System (GPS) automatically connects the location information of the mobile communication terminal to the emergency center of the mobile communication system in emergency situations such as mountain disasters and fires. By providing a convenient and useful service to the user.

As an example, the process of providing such emergency call service will be described. First, when the mobile communication terminal requests an emergency rescue service (for example, 119), the mobile communication terminal is connected to a mobile switching center (MSC) through a base station, and the mobile switch is an emergency located closest to the mobile communication terminal. Select the rescue system to connect the call. Then, the mobile communication terminal transmits its location information to the short message, and the short message is delivered to the selected emergency rescue system by the short message service. Here, the example of transmitting the location information of the mobile communication terminal in a short message is described, but other forms of transmission are possible.

However, such an emergency call service is basically available only in the serviceable area where the signal is transmitted to the base station, and therefore, the emergency call service cannot be used in an emergency situation occurring in an unserviceable area where the signal does not reach the base station. There was a problem.

In addition, the method of simply emitting a flash or generating a sound has a problem in that it is not possible to effectively notify an emergency because the signal reach range is short.

The present invention has been proposed to solve the above problems, the location information (reference point) received last by detecting the departure of the service area in the wireless communication terminal, and stored by sensing the acceleration value at a predetermined period Thereafter, according to a rescue request from a user, a rescue request signal generation function by accelerating detection for generating and transmitting a rescue request signal including current location information of the wireless communication terminal using the stored reference point and acceleration value is provided. The purpose is to provide a wireless communication terminal and a method thereof.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

An apparatus of the present invention for achieving the above object, the wireless communication terminal, wireless transmission and reception means for transmitting and receiving a signal wirelessly; Input means for receiving a distress signal generation request signal; Storage means for storing recent location information and acceleration values prior to leaving the service area; Acceleration sensing means for sensing acceleration of the wireless communication terminal; In response to detecting the departure from the service area from the received signal received through the radio transmission and reception means, the latest location information obtained before leaving the service area is stored in the storage means, and the acceleration detection means is operated to obtain at predetermined time intervals. A control means for storing the acceleration value in the storage means and then driving the position tracking means according to the rescue signal generation request signal received through the input means in a service unavailable state; And calculating the position of the wireless communication terminal using the latest position information and the acceleration value before leaving the service area stored in the storage means under the control of the control means, and then including the calculated position information. And the location tracking means for generating a request signal and transmitting the request signal through the radio transmission and reception means.

On the other hand, the method of the present invention, in the method for generating a rescue request signal by the acceleration detection in the wireless communication terminal, storing the latest location information before leaving the service area in response to detecting that the wireless communication terminal enters the unserviceable area A storage step of sensing and storing an acceleration value of the wireless communication terminal at a predetermined interval; A location calculation step of calculating a current location of the wireless communication terminal using the latest location information and an acceleration value before leaving the stored service area according to a rescue signal generation request signal; And generating and transmitting a rescue request signal including the calculated current position information of the wireless communication terminal.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an embodiment of a wireless communication terminal having a structure request signal generation function by the acceleration detection according to the present invention.

As shown in FIG. 1, the wireless communication terminal having the function of generating a rescue request signal by the acceleration detection according to the present invention includes a wireless transmission / reception apparatus 11, a central processing unit (MSM) 12, and a codec (CODEC) ( 13, storage device 14, voice output device (speaker) 15, display device (LCD) 16, input device (keypad) 17, voice input device (microphone) 18, acceleration sensor ( 19), and position tracking device 20.

The wireless transmission and reception apparatus 11 transmits and receives a signal wirelessly through an antenna. In this case, the antenna may use a wideband antenna covering a wireless communication band and a rescue signal band, or two antennas each covering one band.

The central processing unit (MSM) 12 drives and controls the wireless communication terminal, and in particular, when detecting out of the service area, the acceleration sensor 19 is operated to set the x, y, and z axis acceleration values at predetermined time intervals ( Example: 1 minute), and then store in the storage (14).

As such, when the MSM 12 receives the rescue signal generation request signal from the user through the input device (keypad) 17 while detecting and storing the acceleration value at a predetermined period in the unserviceable area, Performs an inertial navigation function to determine the moving distance and the moving path by using the tracking device 20 to drive the tracking device 20 using the latest location information before leaving the service area and the acceleration value stored in the storage device 14. Do it. In this case, inertial navigation is a navigation method that calculates its position based on an acceleration value. Unlike conventional navigation by astronomical measurement or navigation by radio waves, there is no need for assistance from the outside. Therefore, it is possible to calculate and display various navigational specifications including the current location in a short time without being affected by external weather such as bad weather or radio interference.

The location tracking device 20 starts to operate under the control of the central processing unit (MSM) 12 and includes a reference point (the latest location information before leaving the service area) stored in the storage device 14. After calculating the current position of the wireless communication terminal using the acceleration value stored in the storage device 14, and generates a rescue request signal including the calculated position information. Then, the generated rescue request signal is transmitted to the central processing unit 12 so as to be transmitted through the wireless transmission / reception unit 11, or the generated rescue request signal is controlled according to the control of the central processing unit 12. It may be directly transmitted to the wireless transmission and reception apparatus 11 so as to be transmitted (see FIG. 2). This process is repeated at predetermined time intervals (for example, 5 minutes) until the wireless communication terminal enters the serviceable area or a stop request signal is input through the input device (keypad) 17.

On the other hand, when detecting that the central processing unit (MSM) 12 enters the service area, the operation of the acceleration sensor 19 and the location tracking device 20 is stopped to stop the transmission of the rescue request signal. A detailed operation process will be described later with reference to FIG. 2.

The codec 13 converts a signal received from the wireless transceiver 11 into voice under the control of the central processing unit 12, and outputs the signal to a voice output device (speaker) 15, The voice received from the input device (microphone) 18 is converted into a signal and transmitted to the central processing unit 12 so as to be transmitted through the wireless transmitting and receiving device 11. In this case, the codec 13 may be implemented in the CPU 12.

The storage device 14 stores a program (code, firmware) for driving the wireless communication terminal, in particular, a program for calculating the position information from the acceleration value, a reference point (the latest position information before leaving the service area), And acceleration values of three axes sensed by the acceleration sensor 19.

The voice output device (speaker) 15 outputs the voice received from the codec 13, and the voice input device (microphone) 18 receives the voice to the codec 13 To pass.

The display device (LCD) 16 outputs a screen according to the control of the CPU 12.

The input device (keypad) 17 receives a menu selection signal including a telephone number, a rescue signal generation request signal, and the like through a button.

As illustrated in FIG. 3, the acceleration sensor 19 detects accelerations a _x , a _y , and a _z in three axial directions of _x , _y , and _z . Acceleration values in three axial directions sensed by the acceleration sensor 19 are stored in the storage device 14 and used to track the position of the wireless communication terminal in the location tracking device 20.

Referring to Figure 2 will be described in detail the operation of the present invention.

2 is a diagram illustrating an embodiment of a process for generating a rescue request signal by sensing acceleration in a wireless communication terminal according to the present invention.

In a general case, location information is received from a base station through a reception path (Rx path: antenna, duplexer (DUP), low noise amplifier (LNA), IFR, central processing unit (MSM)) of a wireless communication terminal. In addition, in FIG. 2, a transmission path for wireless communication is not shown, and a transmission path for transmitting a rescue request signal is shown. In this case, the antenna is a broadband antenna.

However, when the wireless communication terminal leaves the service area, the location information cannot be obtained through the Rx path, from which the central processing unit (MSM) 12 operates the acceleration sensor 19.

In addition, the MMS 12 has an acceleration value (a _x , a _y , a _z) indicating how much it has moved in the x, y, z axis directions from the reference point (the latest location information before leaving the service area). ) Is obtained from the acceleration sensor 19 and stored in the storage device 14.

At this time, the acceleration sensor 19 using the following [Equation 1] and [Equation 2], [Equation 3], [Equation 4] acceleration in each of three axes direction a _x , a _y , a _z is calculated, and how much it moves in the x, y, and z axis directions using Equation (5).

V = V ₀ + at

V _x = V _0x + a _x t

V _y = V _0y + a _y t

V _z = V _0z + a _z t

S = V * t

On the other hand, when the central processing unit (MSM) 12 receives a rescue signal generation request signal through the input device (keypad) 17 in a service unavailable state, the location tracking device 20 is driven.

Then, the location tracking device 20 calculates the current location of the wireless communication terminal using the reference point (the latest location information before leaving the service area) and the acceleration value stored in the storage device 14. Then, a rescue request signal including the calculated current position information of the wireless communication terminal is generated and transmitted to the wireless transmission and reception apparatus 11 under the control of the CPU 12. Then, the radio transmitter / receiver 11 mixes the rescue request signal received from the location tracking device 20 with the oscillation frequency from the distress communication frequency oscillator and amplifies it in the power amplification module (PAM) and transmits it through the antenna. . Meanwhile, as described above, the rescue request signal generated by the location tracking device 20 may be implemented as a path that is transmitted to the mixer of the wireless transmitting and receiving device 11 through the central processing unit 12.

Here, the rescue request signal transmitted by the location tracking device 20 is a signal of a predetermined band, not a signal of a general wireless communication band, and is transmitted to all radio stations capable of receiving a distress signal such as a coast station or an aviation station. do. Then, when a distress signal is received at the radio station, a quick rescue operation is performed through a nearby rescue team. Although not shown in the drawings for this purpose, the radio transceiver of the radio communication terminal should be able to process signals of two bands as described above.

Alternatively, a rescue agent provided with a visitor based on the last known position information of the wireless communication terminal does not directly receive the rescue request signal transmitted by the location tracking device 20 to the corresponding area. The mobile communication terminal which dispatches and sends out a rescue request signal may be searched for and rescued.

On the other hand, if the MSM receives a rescue signal generation request signal in a non-serviceable area, it consumes power (battery) by blocking power supply to a module except for generating a rescue signal until entering the serviceable area. Reduce When the wireless communication terminal re-enters the service area, power is normally supplied to all components.

As described above, the location tracking device 20 according to the present invention may be implemented as a separate chip from the central processing unit (MSM) 12, but as another embodiment, location tracking as shown in FIG. Apparatus 20 may be included within central processing unit (MSM) 42.

4 is a configuration diagram of another embodiment of a wireless communication terminal having a structure request signal generation function by acceleration detection according to the present invention.

As shown in FIG. 4, the wireless communication terminal according to another embodiment of the present invention includes a wireless transmitting and receiving device 41, a central processing unit (MSM) 42, a codec 43, and a storage device 44. ), A voice output device (speaker) 45, a display device (LCD) 46, an input device (keypad) 47, a voice input device (microphone) 48, and an acceleration sensor 49.

The radio transceiver 41 transmits and receives signals wirelessly through an antenna.

The central processing unit (MSM) 42 drives and controls the wireless communication terminal, and in particular, when detecting out of the service area, the acceleration sensor 49 is operated to set the x, y, and z axis acceleration values at predetermined time intervals. After acquiring, a reference point stored in the storage device 44 and stored in the storage device 44 according to a rescue signal generation request signal received through the input device (keypad) 47 (before leaving the service area). After calculating the current position of the wireless communication terminal using the latest position information) and the acceleration value, and transmits a rescue request signal including the calculated current position information through the wireless transmission and reception device 41 at predetermined time intervals. Let's do it.

On the other hand, upon detecting that the central processing unit (MSM) 42 enters the service area, the operation of the acceleration sensor 49 is stopped and the rescue request signal is stopped.

The codec 43 converts a signal received from the wireless transmitting and receiving device 41 into voice under the control of the central processing unit 42, and outputs the voice to a voice output device (speaker) 45, The voice received from the input device (microphone) 48 is converted into a signal and transmitted to the central processing unit 42 to be transmitted through the wireless transmitting and receiving device 41.

The storage device 44 stores a program (code, firmware) for driving the wireless communication terminal, in particular, a program for calculating the position information from the acceleration value, a reference point (the latest position information before leaving the service area), And acceleration values of three axes detected by the acceleration sensor 49 at predetermined cycles.

The voice output device (speaker) 45 outputs the voice received from the codec 43, and the voice input device (microphone) 48 receives the voice to the codec 43 To pass.

The display device (LCD) 46 outputs a screen according to the control of the central processing unit 42.

The input device (keypad) 47 receives a menu selection signal including a telephone number, a rescue signal generation request signal, and the like through a button.

The acceleration sensor 49 detects accelerations a _x , a _y , a _z in three axial directions of _x , _y , and _z . Acceleration values in the three axial directions sensed by the acceleration sensor 49 at predetermined intervals are stored in the storage device 44 and used to track the position in the central processing unit (MSM) 42.

Other specific configurations and implementation manners are the same as described above with reference to FIGS. 1 and 2.

Hereinafter, the overall operation of the present invention will be described once again with reference to FIG. 5.

5 is a flowchart illustrating a method for generating a rescue request signal by acceleration detection in a wireless communication terminal according to the present invention.

First, when it detects that the wireless communication terminal enters the unserviceable area (501), it stores a reference point (recent location information before leaving the service area) (502), while setting the acceleration value of the wireless communication terminal at a predetermined interval. Detect and store as (503).

Then, when receiving the rescue signal generation request signal from the user (504), using the stored reference point and the acceleration value to calculate the current position of the wireless communication terminal (505).

In operation 506, a rescue request signal including the calculated current position information of the wireless communication terminal is generated and transmitted. At this time, the transmission of the generated rescue request signal does not end once but is repeatedly performed several times at a predetermined period (for example, 5 minutes).

Meanwhile, when the wireless communication terminal enters the serviceable area or receives a stop request signal during the processes “501” to “506”, the wireless communication terminal stops performing the location tracking function using the acceleration detection.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention stores the last received location information (reference point) by detecting the departure from the serviceable area in the wireless communication terminal, and detects and stores the acceleration value at a predetermined period, and then in response to the rescue request from the user. Accordingly, by generating and transmitting a rescue request signal including the current location information of the wireless communication terminal using the stored reference point and the acceleration value, the location of the wireless communication terminal is notified even in a service unavailable area where location information cannot be obtained. It is effective to request.

Claims (10)

In a wireless communication terminal, Wireless transmitting and receiving means for transmitting and receiving signals wirelessly; Input means for receiving a distress signal generation request signal; Storage means for storing recent location information and acceleration values prior to leaving the service area; Acceleration sensing means for sensing acceleration of the wireless communication terminal; In response to detecting the departure from the service area from the received signal received through the radio transmission and reception means, the latest location information obtained before leaving the service area is stored in the storage means, and the acceleration detection means is operated to obtain at predetermined time intervals. A control means for storing the acceleration value in the storage means and then driving the position tracking means according to the rescue signal generation request signal received through the input means in a service unavailable state; And A rescue request including the calculated position information after calculating the position of the wireless communication terminal using the latest position information and the acceleration value before leaving the service area stored in the storage means under the control of the control means. The position tracking means for generating a signal to be transmitted through the radio transmission and reception means; Wireless communication terminal comprising a. The method of claim 1, The control means and the position tracking means are integrally implemented, In response to detecting the departure from the service area from the received signal received through the radio transmission and reception means, the latest location information obtained before leaving the service area is stored in the storage means, and the acceleration detection means is operated to obtain at predetermined time intervals. After storing the acceleration value in the storage means, the latest location information and the acceleration value before leaving the service area stored in the storage means in accordance with the rescue signal generation request signal received through the input means in the unserviceable state After calculating the position of the wireless communication terminal by using a wireless communication terminal, characterized in that for generating a rescue request signal including the calculated position information and transmitting through the wireless transmission and reception means. The method according to claim 1 or 2, The control means, And performing a function of interrupting power supply to a component other than a component required to transmit a rescue request signal according to a rescue signal generation request signal received through the input means in a service unavailable state. . The method of claim 3, wherein The control means, And the wireless communication terminal further performs a function of normally supplying power to all components as the wireless communication terminal reenters the service area. The method of claim 4, wherein The control means, And controlling each component to repeatedly transmit the rescue request signal including the calculated position information of the wireless communication terminal at a predetermined interval until reentry into the service area. The method of claim 5, wherein The acceleration detecting means, A wireless communication terminal characterized by obtaining accelerations a _x , a _y , a _z in the x, y, z axis directions, and calculating the movement distance in each direction. In the method of generating a rescue request signal by acceleration detection in a wireless communication terminal, A storage step of storing the latest location information before leaving the service area and detecting and storing the acceleration value of the wireless communication terminal at predetermined intervals when the wireless communication terminal detects the entry into the unserviceable area; A location calculation step of calculating a current location of the wireless communication terminal using the latest location information and an acceleration value before leaving the stored service area according to a rescue signal generation request signal; And A rescue request signal transmitting step of generating and transmitting a rescue request signal including the calculated current position information of the wireless communication terminal. Rescue request signal generation method by the acceleration detection in a wireless communication terminal comprising a. The method of claim 7, wherein The rescue request signal transmission step, And discharging the rescue request signal including the calculated current position information of the wireless communication terminal repeatedly at a predetermined period until reentering into the service area. The method according to claim 7 or 8, Disconnecting power to components other than the components required to send out a rescue request signal according to the rescue signal generation request signal; Rescue request signal generation method by the acceleration detection in the wireless communication terminal further comprising. The method of claim 9, Normally supplying power to all components as the wireless communication terminal re-enters the service area; Rescue request signal generation method by the acceleration detection in the wireless communication terminal further comprising.

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