KR100916495B1 - Urgency rescue system and method - Google Patents

Abstract

Emergency rescue systems and methods are disclosed that can locate a rescue requester quickly and accurately. The emergency rescue method of the present invention comprises the steps of activating the signal generator in a wide area detection area, receiving an emergency rescue signal in the wide area detection area, and setting a candidate detection area where a target point can exist based on the emergency rescue signal. Comprising a step of comparing a reference value representing a range of the candidate detection region and a predetermined error range, and determining a target point, the rescue team may repeatedly receive a signal transmitted from the rescue requester to approach the target point. . Therefore, in response to the emergency rescue signal of the rescue requester, the rescue team can be dispatched to the target point quickly and accurately, and the moving cost can be reduced by moving through the shortest moving path.

Emergency, rescue, error, repeat, shift, compare

Description

Emergency rescue system and method

The present invention relates to an emergency rescue system and method, which is an emergency rescue system that can accurately and quickly approach the target point in order to cope with the emergency situation while receiving a signal from the target point dynamically within the error range to find the correct position And to a method.

The location-based emergency rescue system refers to a series of services in which an emergency rescue signal is generated from an emergency patient or a person in need of an emergency rescue in response to an emergency situation, and the emergency response team receives the emergency rescue signal. However, in order to satisfy these services, location technology is required to ensure the reliability of the generation, transmission and reception of emergency signals and the accuracy of signal generation locations.

However, current commercial positioning technology has a large error range from tens of meters to several kilometers. When using a GPS that tracks a location using satellite signals, the error is reduced to within a few meters, but the positioning technology using GPS cannot be used indoors, so inside a high-rise building or indoors where GPS signals cannot be reached. There is a problem with reliability. Accordingly, there is a need for the development of an active emergency rescue system and method capable of accurately detecting the position of a target point within a wide error radius in order to provide a faster and more accurate location based service.

An object of the present invention for solving the above problems is to provide an emergency rescue system and method that can accurately determine the location of the rescue requester for generating an emergency rescue signal.

Another object of the present invention is to provide an emergency rescue system and method that can more quickly determine the location of the rescue requester requesting the emergency rescue to ensure the safety of the rescue requester.

According to a preferred embodiment of the present invention for achieving the above object, the emergency rescue method for tracking the target point for transmitting the emergency rescue signal in the wide area detection area estimated to be the point where the emergency rescue signal occurred in the area detection area; Activating the signal generator, receiving the emergency rescue signal within the wide area detection area, setting a candidate detection area where the target point can exist based on the emergency rescue signal, Comparing a reference value representing a range and a predetermined error range and determining the target point.

The setting of the candidate detection area may include selecting at least one candidate point that may assume the target point by receiving the emergency rescue signal at a current position.

Here, the candidate point may exist in a direction in which a signal larger than a preset signal size is received from the received emergency rescue signal.

The comparing of the reference value may include re-receiving the emergency rescue signal by moving from a current position to a new position if the range of the candidate detection region is greater than the reference value, resetting the candidate detection region at the new position; And detecting an intersection area between the reset candidate detection area and the existing candidate detection area. The comparing of the reference value may include determining that the target point is located in the candidate detection area when the range of the candidate detection area is smaller than the reference value. Here, the new position may exist in a direction in which the strength of the signal among the emergency rescue signals is greatest.

The setting of the candidate point may further include supplementing and setting map data.

The emergency rescue method of the present invention comprises the steps of: receiving an emergency rescue signal sent from a location alarm through a repeater, estimating a wide area detection area including a target point at which the emergency rescue signal is generated, and moving to the wide area detection area Transmitting an activation signal for activating the location alerter, receiving an emergency rescue signal directly from the location alerter, and receiving at least one emergency rescue signal to assume the target point; Estimating a point, setting a first candidate detection region including the candidate point at a current position, and in a direction in which a signal having the greatest intensity among the emergency rescue signals is generated in the first candidate detection region; Setting a new position, moving to the new position, and receiving an image at the new position. Setting a second candidate detection region including an error range as a candidate point, and comparing a range of the second candidate detection region with a preset reference value, wherein the range of the second candidate detection region is greater than the reference value. If it is small, it can be determined that the target point is located in the corresponding area.

The activation signal for activating the position indicator in the wide area detection region is transmitted through the omnidirectional antenna, and the emergency rescue direct signal can be measured through the directional antenna.

Here, the candidate point may be a point in which the magnitude of the signal is the strongest of the received emergency rescue signals.

Comparing the reference value, if the range of the candidate detection region is greater than the reference value, moving from the current position to a new position to re-receive the emergency rescue signal, and resetting the candidate detection region at the new position And detecting an intersection area between the reset candidate detection area and the existing candidate detection area. Here, the setting of the candidate point may further include supplementing and setting map data.

In addition, the emergency rescue system for tracking the location of the rescue requester requesting an emergency rescue is provided with a location notification that the user is provided for generating an emergency rescue signal, and receiving the emergency rescue signal, a wide area detection including the location of the rescue requester A central service center for inputting a rescue team into an area, a position detector provided at the rescue team, and a position detector for transmitting an activation signal to generate a location notification signal for indicating a location of the rescue requester from the location detector; And a control unit for receiving the size and the direction of the location notification signal, and the rescue team can find the location of the rescue requester by moving in the direction having the greatest intensity among the location notification signals detected by the control unit. .

The control unit may include a map display unit displaying an area where the location alerter is located, and the map display unit may display at least one candidate point that can be assumed as the location of the rescue requester based on the location notification signal. . In addition, the map display may display a candidate detection area, which is an area including the candidate point, from the position of the rescue team.

The candidate detection area is changed in size as the rescue team moves, and the rescue requester is located in an area where the candidate detection areas that are changed intersect and remain.

The emergency rescue system of the present invention may further include a repeater for transmitting the emergency rescue signal to the central service center.

As described above, according to the present invention, in order to find the location of the rescue requester who requested the emergency rescue, using a device such as a location detector and a location reminder to repeatedly transmit and receive signals to each other, the magnitude and direction of such a signal By analyzing the results, it is possible to find the target point quickly and accurately.

In addition, there is an effect that can quickly and accurately send to the rescue requesters located in areas where GPS-based services are not provided, such as indoors.

In addition, by using the results obtained through the present invention, it is possible to preempt the domestic and foreign location tracking technology market that has not been developed and applied yet, and the effect of job creation can be expected.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments.

First, referring to Figures 1 to 3, the overall configuration of the emergency rescue system of the present invention will be described. 1 is a block diagram illustrating the concept of an emergency rescue system of the present invention, FIG. 2 is a block diagram illustrating the emergency rescue system of FIG. 1, and FIG. 3 is a rescue requester and a rescue team in the wide area detection area of FIG. This is a block diagram illustrating an operation of exchanging signals with each other.

The emergency rescue system 1 of the present invention includes a position alarm 20, a central service center 100, and a repeater 200.

The location alerter 20 is a portable device possessed by the rescue requester 10 and is a device that generates a signal of a predetermined frequency to notify the danger signal of the rescue requester 10 in an emergency situation. The emergency rescue signal sent by the location alerter 20 may be transmitted to the central service center 100 through the repeater 200, or after being transmitted to a mobile communication terminal, the Internet, a wired terminal, and the like. It may be transmitted to the central service center 100 through the repeater 200 from a communication terminal, the Internet, a wired terminal.

The central service center 100 includes a controller 110, a rescue team 120, a location detector 130, and a map display unit 140.

The control unit 110 receives the emergency rescue signal from the repeater 200 to roughly determine the location of the rescue requester 10. In general, it is difficult to accurately predict the position of the rescue requester 10 through the emergency rescue signal transmitted from the repeater 200, and only an approximate area including the area where the location alerter 20 is located may be known. . For example, when the emergency rescue signal is transmitted through the repeater 200, the controller 110 may calculate only a wide area including a point where a repeater closest to the position alarm 20 is installed.

The rescue team 120 includes a manpower and equipment input to a wide area identified by the controller 110, that is, the wide area detection area 300. The rescue team 120 of the present invention may move to the wide area detection area 300 through the wide area movement path 150. The rescue team 120 may carry the position detector 120 that may arrive within the wide area detection area 300 and activate the position detector 20.

The rescue team 120, which has arrived at the global location, operates the position detector 120 to transmit an activation signal 131 for activating the position alarm 20. In addition, the position alarm 20 receives the activation signal 131 and generates a position notification signal 21 indicating its current position. Here, the location notification signal 21 may be directly transmitted to the rescue team 120, and in addition to the radio wave is reflected to the building, it may be transmitted to the rescue team 120.

As such, the position notification signal 21 is transmitted to the rescue team 120 in the form of different wavelengths in different directions. In general, the direction in which the signal size of the location notification signal 21 is greatest is a direction transmitted directly from the location alarm 20. On the other hand, it is preferable to measure and analyze the location notification signal several times in the wide area detection area in order to grasp the signal of any direction from the position notification signal from the above-mentioned fork notification signal.

The rescue team 120 may include the map display unit 140 to visually identify a signal transmitted directly without being reflected from the received location notification signal. The map display unit 140 includes map data for showing the wide-area position at a glance and a display for expressing it as an image.

The display shows candidate detection areas 311, 312, and 313, which are areas including the candidate points. The candidate detection regions 311, 312, and 313 are formed in a fan shape having the vertex 120 as a vertex.

The candidate detection areas 311, 312, and 313 represent a range in which the candidate points may exist, which are assumed to be the target points 400. As a result, the candidate detection areas 311, 312, and 313 represent areas in which the rescue requester 10 may be located. .

4 and 5, the process of finding the position of the rescue requester through the emergency rescue signal is as follows. 4 is a plan view illustrating a scene of transmitting a first signal at a first location of a wide area detection area, and FIG. 5 is a graph showing strength with respect to an azimuth angle of the location notification signal received in FIG. 4.

The rescue team (see FIGS. 1 and 120) includes a position detector (see FIGS. 1 and 120) for activating the position detector (see FIGS. 1 and 20) held by the rescue requester (see FIGS. 1 and 10), and the rescue requester 10 ) And a map display unit (see FIG. 1, 140) and a position notification signal transmitted from the position detector 20 to visually determine the position of the target position 400. A control unit (refer to FIG. 1, 110) for analyzing and synthesizing data to be displayed at 140 is provided. Here, the target point is a current position of the rescue requester 10.

The rescue team 120 moves to the wide area detection area 300 identified by the control unit 110. The rescue team 120 moves to the wide-area detection region 300 and transmits an activation signal (see FIG. 3, 131) through the position detector 120. The position alarm 20 receives the activation signal 131 and transmits a position notification signal (see FIGS. 3 and 21).

By the way, the area where the location alarm 20 is located is usually a concentrated area of the building, whereby the location notification signal 21 is directly from the location alarm 20 to the control unit 110. In addition to the direct signal transmitted, the reflection signal reflected to an obstacle such as the building and the like may be an interference signal generated within a reception frequency band.

As shown in FIG. 5, the strength of the direct signal is the largest among the received signals. The target point 400 is most likely to exist in the direction in which the magnitude of the signal is large.

However, it is also possible that the signal coming from the direction where the signal strength is greatest among the received signals is a reflected signal or an interference signal. Therefore, it is preferable to set the candidate detection regions 311, 312, and 313 in a direction in which a signal exceeding a threshold c, which is a predetermined reference magnitude, is emitted. The display 142 provided in the map display unit 140 includes a first measurement position 301 which is a current position of the rescue team 120 and a direction in which the candidate point exists from the first measurement position 301. The candidate detection areas 311, 312, and 313 indicating the area falling within the effective angle range are displayed.

In this case, the effective angle range may be determined as an area where the intensity of the received signal is greater than or equal to a threshold c, that is, the candidate detection areas 311, 312, and 313, and a detection error is an error radius given the candidate detection area. Talk about when you are selected. For example, if the area of the candidate detection area is smaller than the area of a circle within a radius of 5m, it is determined that the detection area is within the error range, and from this time, the candidate detection area can be moved directly to the candidate detection area by finding the shortest path.

In the present exemplary embodiment, the candidate detection areas 311, 312, and 313 are the same as the first-first candidate detection area 311, the 1-2 candidate detection area 312, and the 1-3 candidate detection area 313. Although it is set to three areas, the present invention is not limited thereto, and more candidate detection areas may be set in order to increase the accuracy of positioning.

However, the candidate detection areas 311, 312, and 313 measured only once are difficult to determine as the target point 400 to be searched by the rescue team 120. Through the first candidate detection regions 311, 312, and 313, it is possible to estimate only the degree in which direction the target point 400 exists within an effective angle range. That is, it is difficult for the rescue team 120 to accurately determine the target point 400 only by arriving at the wide area detection area 300 and receiving a single position notification signal.

Referring to FIGS. 6 and 7, a process of finding a position of a rescue requester by moving from an initial position of a wide area detection region to another position is as follows. 6 is a plan view illustrating a scene of transmitting a second signal at a second position of the wide area detection region, and FIG. 7 is a graph showing the intensity of the azimuth angle of the position notification signal received in FIG. 5.

Based on the candidate detection areas 311, 312, and 313 first assumed in the wide area detection area 300, the target point 400, which is the location of the rescue requester, may be found.

To this end, together with the first candidate detection areas 311, 312, and 313 calculated at the first measurement location 301 of the wide area detection area 300, the second measurement location is a new location of the wide area detection area 300. The target point 400 may be determined based on the second candidate detection areas 321, 322, and 323 calculated at 302.

In more detail, the rescue team (see FIG. 1, 120) is based on the first candidate detection areas 311, 312, and 313, the second measurement location 302 being a new measurement location in the wide area detection area 300. Find). In general, the second measurement position 302 may be located in the direction in which the signal intensity is greatest in the first position notification signal 21 transmitted from the first candidate detection areas 311, 312, and 313. Set to point. In this embodiment, the second measurement position 302 is determined in the direction of the 1-1 candidate detection region 311 and the 1-2 candidate detection region 312.

The rescue team 120 moves to the second measurement position 302 to operate a position detector (see FIG. 1). The position detector 120 transmits an activation signal, and the position detector (see FIG. 1 and 20) carried by the rescue requester (see FIG. 1 and 10) receives the activation signal (see FIG. 3 and 131). The location notification signal (see FIG. 3 and 21) for notifying the location of the rescue requester 10 is transmitted.

At this time, the rescue team 120 receives the position notification signal 21 by using the control unit (see FIG. 3, 110), and analyzes the magnitude and direction of the signal. The second measurement position 302, which is a new measurement position, and the second candidate detection region 321, which is a new measurement position, are displayed on the display 142 of the map display unit 140 based on the analyzed signal. , 322, 323).

The second candidate detection regions 321, 322, and 323 are newly set based on the second position notification signal 22 received by the rescue team 120 at the second measurement position 302. It may be divided into a -1 candidate detection region 321, a 2-2 candidate detection region 322, and a 2-3 candidate detection region 323.

The region of the second candidate detection regions 321, 322, and 323 may be larger or smaller than the first candidate detection regions 311, 312, and 313 described with reference to FIGS. 4 and 5, and may not appear at all. It may not. Herein, the target points in a direction in which the area of the first candidate detection areas 311, 312, and 313 and the second candidate detection areas 321, 322, and 323 intersect each other and have a large signal intensity are also large. 400 is likely to exist.

Here, the intersection area includes a first intersection area 331 where the first-first candidate detection area 311 and the second-first candidate detection area 321 intersect with each other, and the second-second candidate detection area 312. And a second intersection area 332 where the second-second candidate detection area 322 intersects and a third intersection where the first-third candidate detection area 313 and the second--3 candidate detection area 323 intersect. It may be divided into an area 333.

In FIG. 7, the first position notification signal 21 measured at the first measurement position 301 and the second position notification signal 22 measured at the second measurement position 302 are shown. In this case, the plurality of location notification signals measured at different measurement positions have a large signal size, and the target point 400 is likely to exist in an area where directions overlap.

In order to calculate a more accurate position that may be the target point 400, the rescue team 120 may move to the third measurement position 303, whereby the control unit (see FIG. 3 The position notification signal 23 is measured. Here, the third location notification signal (see FIGS. 4 and 23) together with the first location notification signal (see FIGS. 3 and 21) and the second location notification signal (see FIGS. 3 and 22) displayed on the map display unit 140. ), An area I in which signals overlap in a specific direction is formed in each position notification signal graph. This region corresponds to the 1-2 candidate detection region 312 and the 2-2 candidate detection region 322 in FIGS. 2 and 4.

That is, the rescue team 120 may determine that the target point 400 exists in a region corresponding to the overlapped region I, and the target to provide rescue services to the rescue requester 10. May move to point 400.

Referring to Figure 8 emergency rescue method of the present invention will be described. 8 is a flowchart illustrating the emergency rescue method of the present invention.

First, a rescue requester in need of an emergency rescue sends an emergency rescue signal informing of his or her situation using a location alarm (S1). Here, the emergency rescue signal is transmitted to the rescue service center through the repeater.

Next, the rescue service center analyzes the emergency rescue signal to roughly identify the location of the rescue requester and sends the rescue team to the wide area detection area where the rescue requester is located (S2).

Next, the rescue team arrives at the wide area detection area and operates a position detector to transmit an activation signal for activating the position alarm (S3).

Next, the location alarm sends a location notification signal in response to the activation signal, and after receiving the location notification signal through a control unit and a map display held by the rescue team, prepare a received signal panorama indicating the magnitude and direction of the received signal. (S4).

Next, a signal having an intensity greater than a preset intensity is selected based on the received signal panorama, and several candidate points and candidate detection areas in which the rescue requester is likely to be detected are detected (S5). Here, the candidate detection area is a current location of the rescue requester, that is, an area where a target point may exist.

Next, the candidate detection area is compared with a reference value (S6).

Next, if the candidate detection area is larger than the reference value, the rescue team searches for several measurement position candidates in the wide area detection area to reduce the error (S7). In this case, it is preferable that the candidate of the new measurement position is set in a direction in which the strength of the received location notification signal is large. Meanwhile, before selecting one new measurement position among a plurality of candidate positions, first, the cost of moving the rescue team to each candidate position is calculated (S8). As a criterion for selecting the new measurement position, it is good to consider the travel time in addition to the required cost. After that, the candidate position at which the most optimal required cost is calculated is determined as the new measurement position (S9).

Next, if the candidate detection area is smaller than the reference value, the candidate detection area is determined to be the area where the target point is located (S10). That is, instead of using a repetitive signal detection method, the candidate detection area automatically calculates the shortest path and moves to the target point.

1 is a configuration diagram illustrating the concept of an emergency rescue system of the present invention.

FIG. 2 is a block diagram illustrating the emergency rescue system of FIG. 1.

FIG. 3 is a block diagram illustrating an operation of exchanging signals between a rescue requester and a rescue team in the wide area detection area of FIG. 2.

4 is a plan view illustrating a scene in which the first signal is transmitted at a first position of the wide area detection region.

FIG. 5 is a graph showing the strength with respect to the azimuth angle of the location notification signal received in FIG. 4.

6 is a plan view illustrating a scene in which a second signal is transmitted at a second position of the wide area detection region.

FIG. 7 is a graph showing the strength with respect to the azimuth angle of the location notification signal received in FIG. 6.

8 is a flowchart illustrating an emergency rescue method of the present invention.

<Explanation of symbols for the main parts of the drawings>

1: Emergency rescue system 10: Rescue applicant

20: position detector 100: central service center

110: control unit 120: rescue team

130: position detector 140: map display unit

200: repeater 300: wide area detection range

301: first measurement position 302: second measurement position

303: third measuring position 400: target point

Claims (19)

An emergency rescue method for tracking a target point at which an emergency rescue signal is transmitted in a wide area detection area estimated as a location where an emergency rescue signal has occurred, Activating the signal generator within the wide area detection area; Receiving the emergency rescue signal within the wide area detection area; Setting a candidate detection area in which the target point can exist based on the emergency rescue signal; Comparing a reference value representing a range of the candidate detection region with a preset error range; And Determining the target point; Emergency rescue method comprising a. The method of claim 1, And setting the candidate detection area comprises selecting at least one candidate point capable of assuming the target point by receiving the emergency rescue signal at a current position. The method of claim 2, The candidate point is an emergency rescue method, characterized in that the signal in the received emergency rescue signal larger than the size of a predetermined signal exists in the received direction. The method of claim 1, Comparing the reference value, if the range of the candidate detection region is greater than the reference value, Re-receiving the emergency rescue signal by moving from a current location to a new location; Resetting the candidate detection region at the new position; And Detecting an intersection area between the reset candidate detection area and the existing candidate detection area; Emergency rescue method comprising a. The method of claim 1, And comparing the reference value comprises determining that the target point is located in the candidate detection area when the range of the candidate detection area is smaller than the reference value. The method of claim 1, And when the candidate detection region is within an error range, the candidate region is automatically moved to find the shortest path from the candidate region to the target point. The method of claim 4, wherein The new position is an emergency rescue method, characterized in that the strength of the signal in the emergency rescue signal in the largest direction. The method of claim 2, The step of setting the candidate detection region further comprises the step of replenishing and setting the map data. Receiving an emergency rescue signal sent from the position alarm through a repeater; Estimating a wide area detection area including a target point at which the emergency rescue signal is generated; Moving to the wide area detection area; Transmitting an activation signal for activating the locator; Receiving an emergency rescue signal directly from the location alarm; Receiving at least one emergency rescue signal and estimating at least one candidate point that can be assumed as the target point; Setting a first candidate detection region including the candidate point at a current position; Setting a new position in the first candidate detection region in a direction in which a signal having the greatest intensity of the signal among the emergency rescue signals is generated; Moving to the new location; Setting a second candidate detection region including an error range from the new position to the candidate point; And Comparing a range of the second candidate detection region with a preset reference value; And determining that the target point is located in a corresponding area when the range of the second candidate detection area is smaller than the reference value. The method of claim 9, And an activation signal for activating the position detector in the wide area detection region through a non-directional antenna, and measuring the emergency rescue signal through a directional antenna. The method of claim 9, The candidate point is an emergency rescue method characterized in that the position of the signal in the direction of the strongest of the received emergency rescue signal. The method of claim 9, Comparing with the preset reference value, if the range of the second candidate detection region is greater than the reference value, Receiving the emergency rescue signal again; Resetting the candidate detection region at the new position; And Detecting an intersection of the reset candidate detection region and the existing candidate detection region; Emergency rescue method comprising a. The method of claim 9, The step of setting the candidate point further comprises the step of replenishing and setting the map data. In the emergency rescue system for tracking the location of the rescue requester requesting an emergency rescue, A location alerter provided by the rescue requester and generating an emergency rescue signal; A central service center receiving the emergency signal and injecting a rescue team into a wide area detection area including a location of the rescue requester; A position detector provided in the rescue team to transmit an activation signal to generate a position notification signal informing the position requester of the rescue requester; And A control unit configured to receive the location notification signal and detect a magnitude and a direction of the location notification signal; And the rescue team tracks the location of the rescue requester by moving in the direction having the greatest intensity among the location notification signals detected by the controller. The method of claim 14, The control unit includes a map display unit displaying an area where the location alerter is located, and the map display unit displays at least one candidate point that can be assumed as the location of the rescue requester based on the location notification signal. Emergency rescue system. The method of claim 15, And the candidate detection area on the map display is an area including the candidate point from the position of the rescue team. The method of claim 15, The candidate detection area is urgent, wherein the size of the rescue requester changes as the rescue team moves, and the location of the rescue requester is present in an area where the candidate detection areas that are changed intersect and remain. Rescue system. The method of claim 14, And a repeater for transmitting the emergency rescue signal to the central service center. The method of claim 14, And the position detector includes an omni directional antenna for transmitting the activation signal.

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