KR20130008199A - System and method for disaster information communication - Google Patents

Abstract

PURPOSE: A disaster information communication system and a method are provided to rapidly find whether disaster generation or not and location information, thereby improving stability and transmitting/receiving disaster information. CONSTITUTION: A user terminal(100) analyzes image information of a moving or stopping area and senses whether disaster generation or not. When the disaster generation is sensed, the user terminal searches a surrounding wireless communication network. The user terminal accesses to a specific wireless communication network and transmits/receives image the disaster information including image information and location information of an area. A disaster management server(120) receives the disaster information and provides a related agency. [Reference numerals] (100) User terminal; (101) Photographing unit; (103) Image processing unit; (105) Disaster sensing unit; (107) CPS receiving unit; (109) Location information processing unit; (111) Communication unit; (120) Disaster management server; (AA) CPS satellite; (BB) Wireless communication network; (CC) Fire station; (DD) Police station; (EE) Disaster management agency; (FF) Ordinary person

Description

Disaster Information and Communication Systems and Methods {SYSTEM AND METHOD FOR DISASTER INFORMATION COMMUNICATION}

The present invention relates to a disaster information communication system and a disaster information communication method for quickly providing a disaster occurrence, such as a fire, an earthquake, and its location information.

Recently, a system that monitors the occurrence of a disaster in case of a disaster such as a fire, an earthquake, a flood or a tsunami, sounds an alarm when a disaster occurs, or sends a disaster notification and evacuation message using a specific communication infrastructure is widely used. have. In this case, as a method of monitoring a specific area, a method of acquiring and analyzing image information by installing a camera in a fixed location of the corresponding area is mainly used.

However, in the above method, since only a certain area in which a fixed camera is installed can be photographed, the monitoring section is limited and a blind spot is not caught by the camera. As an alternative, it is possible to divide the area and install a large number of cameras in each divided area. However, in this case, it is expensive to install, maintain, and manage the camera. It can not be installed indefinitely, there is a problem that is difficult to apply.

In addition, in the related art, wired communication or a single type of wireless communication network is used to transmit and receive disaster information. When a used wireless communication network is destroyed along with a disaster or the communication environment becomes poor, it is difficult to transmit and receive disaster information itself. There is a problem that can not cope quickly.

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above problems, and an object of the present invention is to provide a disaster information communication system and method that can quickly determine whether a disaster has occurred and its location information by using an unspecified number of user terminals for disaster information collection. It is done.

In addition, it is an object of the present invention to provide a disaster information communication system and method that can quickly transmit and receive disaster information and increase its stability by selectively using various wireless communication networks according to the communication environment of the disaster area.

Disaster information communication system according to the present invention for achieving this purpose, by analyzing the image information of the current moving or stationary area to detect the occurrence of a disaster, if a disaster occurrence is detected, search the surrounding wireless communication network, A user terminal for accessing a specific wireless communication network of a wireless communication network and transmitting disaster information including image information and location information of the area, and a disaster management server for receiving the disaster information and providing it to a related organization. It uses a WLAN, WCDMA, WiBro or LTE scheme.

The user terminal may include a photographing unit obtaining the image information, an image processing unit analyzing the image information, a disaster detecting unit detecting a disaster occurrence based on the analysis result, and detecting the location information from the GPS satellites. GPS detection unit for receiving a detection and disaster occurrence may include a communication unit for searching the surrounding wireless communication network, and selecting and connecting a specific wireless communication network of the found wireless communication network and then transmits the disaster information.

The communication unit preferentially accesses the WLAN network when there is an accessible WLAN network among the searched wireless communication networks, and selects and connects a network having the highest signal strength among the WCDMA, WiBro, and LTE when there is no accessible WLAN network. The disaster information may be transmitted using a modulation scheme that is compatible with the connected wireless communication network.

According to the present invention, it is possible to quickly determine whether a disaster occurs by using a user terminal including a camera and a GPS receiver such as a camera, and in particular, the moving image information and its location information according to the movement of the user terminal in real time. Providing rapid response, such as dispatching emergency rescue personnel to disaster-prone areas.

In addition, since it is possible to transmit and receive disaster information by selecting the optimal wireless communication network according to the communication environment of the disaster occurrence area, it can be easily used when a prompt information is provided in an urgent situation.

1 is a block diagram of an embodiment of a disaster information communication system according to the present invention;
Figure 2 is a flow diagram of an embodiment of a disaster information communication method according to the present invention.
3 is a flow diagram of one embodiment of the network selection and connection step (S209) of FIG.
4 and 5 illustrate an embodiment of a disaster information display platform before and after a disaster occurs, respectively.

The above and other objects, features, and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings, which are not intended to limit the scope of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an embodiment of a disaster information communication system according to the present invention.

Referring to FIG. 1, the disaster information communication system according to an embodiment of the present invention analyzes image information of an area currently moving or stopped to detect whether a disaster has occurred, and when a disaster is detected, through a specific wireless communication network. A user terminal 100 for transmitting disaster information including image information and location information of a region, and a disaster management server 120 for receiving the disaster information and providing the disaster information to related organizations.

Here, the user terminal 100 includes a photographing unit 101 for obtaining the image information, an image processing unit 103 for analyzing the image information, and a disaster detection unit 105 for detecting whether a disaster has occurred based on the analysis result. ), If a disaster is detected, the GPS receiver 107 for receiving the location information from the GPS satellite, and if a disaster is detected, searches for a wireless communication network in the vicinity, selects and connects a specific wireless communication network among the found wireless communication networks, and then It may include a communication unit 111 for transmitting the disaster information. The apparatus may further include a location information processor 109 for displaying the location information received from the GPS satellites on a map and providing the location information in a graphic form.

The wireless communication method used in the present invention is an international communication standard IEEE 802.11, commonly used as Wi-Fi (Wireless-Fidelity). A wireless LAN (WLAN) scheme defined as a / b / g, Wideband Code Division Multiple Access (WCDMA), Wireless Broadband (WiBro), and Long Term Evolution (LTE) scheme may be included.

Here, the WLAN method is a short-range wireless network using an access point (AP), and the network can be accessed using many APs installed in various places in the city. WCDMA is a third generation mobile communication technology that is currently used nationwide. WiBro and LTE are fourth generation mobile communication technologies that include communication standards using Orthogonal Frequency Division Multiplexing (OFDM) modulation and Direct-Sequence Spread Spectrum (DSSS). Changing the communication parameters to match each of these communication systems can be used as a base communication network for disaster information communication.

Disaster information communication system according to the present invention performs a process of searching for the base station or the AP of the communication network to search the neighboring communication network of the area where the user terminal 100 is located and transmit and receive disaster information using the communication parameters corresponding to do. At this time, the user terminal 100 first searches for the existence of the WLAN network and whether the connection is possible. This is because the data transmission speed is fast and the information can be transmitted and received at low power when using a WLAN network. If there is no WLAN network that can be accessed, the network having the best channel state is selected based on the signal size among other communication networks, and a modulation scheme corresponding to the network selected from the communication parameters is used.

The user terminal 100 may be implemented by being coupled to a mobile device such as a black box or a reconnaissance flight device mounted in a vehicle or an aircraft, or may be implemented in various communication devices such as a smartphone. Therefore, it is possible to quickly transmit and receive a flexible image and the position information corresponding to the movement of the user terminal 100 in real time. Alternatively, it may be implemented to be remotely controlled by an administrator by being installed in a fixed form in a specific region as before.

2 is a flow chart of an embodiment of a disaster information communication method according to the present invention, and FIG. 3 is a flow chart of an embodiment of the network selection and connection step S209 of FIG. Through this, the function and driving method of each component of the disaster information communication system of FIG. 1 will be described in detail.

2, the disaster information communication method according to the present invention, image information acquisition step (S201), disaster occurrence detection step (S203), location information receiving step (S205), surrounding wireless communication network search step (S207), The wireless network selection / connection step S209 and the disaster information transmission step S211 are included.

In the image information acquiring step (S201), image information of a region where the user terminal 100 is located is obtained through the photographing unit 101 of the user terminal 100, that is, various camera apparatuses.

In the disaster detection step (S203), first, the image processing unit 103 analyzes the image information of the corresponding area, and the disaster detection unit 105 detects whether or not a disaster has occurred based on the analysis result.

In one example, the image processing unit 103 analyzes the degree of inclusion of the R, G, B (red, green, blue) of the image information using the RGB analysis algorithm for the fire detection, The disaster detection unit 105 may determine that a fire has occurred when a specific color area is wider than a predetermined threshold area as a result of the above analysis. If a fire breaks out during the day, a large amount of smoke can be identified by the rising smoke. In this case, the gray area determined by the R, G, and B values of the image information may be used for the smoke detection. For example, in the case of dark gray, since R, G, and B values each represent about 50 values in the range of 0 to 255, the range of R, G, and B values corresponding to the gray area representing smoke is preset. Then, the range of pixels belonging to the corresponding range may be identified as a gray area (that is, an area representing smoke). The disaster detector 105 may determine whether a wildfire has occurred based on whether the gray area is distributed wider than a predetermined threshold area.

In addition, the image processor 103 may identify the moving object in the image and analyze the movement pattern of the identified moving object to determine whether a disaster has occurred. For example, when the identified moving object is a vehicle, if a sudden change in the position, speed, etc. of the vehicle is detected, it may be predicted that an accident has occurred in the corresponding area.

In the location information receiving step S205, when a disaster occurs, the GPS receiver 107 receives location information of an area where the user terminal 100 is located from a GPS satellite (not shown). The location information may include latitude and longitude information of the region. The location information processing unit 109 may process and provide graphic information based on a Graphical User Interface (GUI) such as displaying location information on a map in 2D or 3D.

In the step S207 of searching for a neighboring wireless communication network, the communication unit 111 searches for an accessible wireless communication network around the area where the user terminal 100 is located in order to promptly transmit disaster information in real time. At this time, the access network can be searched by sending a REQ (Request) signal to the base station or AP of each communication network and receiving an ACK (Acknowledgement) signal from the base station or AP.

In the wireless communication network selection and access step (S209), as shown in FIG. 3, it is first determined whether the WLAN network can be connected first (S301), and if there is an accessible WLAN network, the access is made (S303). As described above, the data transmission speed of the WLAN network is high and data transmission is possible at low power. If there is no WLAN network to which access is possible, signal strength of another accessible wireless communication network (WCDMA, WiBro, LTE, etc.) may be measured and connected to the network having the highest signal strength (S305). In this way, it is possible to establish an optimal communication environment for real-time transmission of disaster information in the area.

In the disaster information transmission (S211) step, the communication unit 111 transmits the disaster information including the image information and the location information collected by using a modulation scheme corresponding to the connected wireless communication network to the disaster management server 120.

The disaster management server 120 receives the image and location information of the disaster occurrence area in real time from the moment the disaster occurs, and sends it to related organizations such as fire departments, police stations, security companies, various disaster response agencies, and the general public located in the area. Can be provided immediately. This enables quick and immediate response to disasters, such as dispatching emergency rescue personnel or escaping from the area.

4 and 5 are diagrams illustrating an embodiment of a disaster information display platform before and after a disaster occurs, respectively.

Before the disaster (FIG. 4), the disaster management server 120 does not receive the image information and the location information from the user terminal 100. In the event of a disaster (FIG. 5), the video information of the region and the location information through the GPS are provided. Can be displayed on the screen and sent to the relevant authority.

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. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention.

Claims (11)

Analyze the video information of the current moving or stationary area to detect the occurrence of a disaster, if a disaster is detected, search the surrounding wireless communication network, access the specific wireless communication network among the searched wireless communication network and the location A user terminal for transmitting disaster information including information; And
A disaster management server that receives the disaster information and provides it to related organizations
Including,
The wireless communication network uses a WLAN, WCDMA, WiBro or LTE method
Disaster Information Communication System.
The method of claim 1,
The user terminal
A photographing unit obtaining the image information;
An image processor analyzing the image information;
A disaster detection unit to detect whether or not a disaster has occurred based on the analysis result;
A GPS receiver which receives the location information from a GPS satellite when a disaster occurs; And
And a communication unit for searching for a neighboring wireless communication network, detecting a disaster occurrence, selecting and connecting a specific wireless communication network among the found wireless communication networks, and transmitting the disaster information.
Disaster Information Communication System.
The method of claim 2,
The communication unit
If there is an accessible WLAN network among the searched wireless communication networks, the WLAN network is preferentially accessed.If there is no accessible WLAN network, the WCDMA, WiBro, and LTE networks are selected to connect with the highest signal strength.
Disaster Information Communication System.
The method of claim 3,
The communication unit
Transmitting the disaster information using a modulation scheme that is compatible with the connected wireless communication network
Disaster Information Communication System.
The method of claim 2,
The image processing unit analyzes the degree of inclusion of red, green, and blue (RGB) of the image information,
The disaster detection unit determines that a fire has occurred when a specific color region is distributed wider than a preset threshold region as a result of the analysis.
Disaster Information Communication System.
The method of claim 2,
The location information includes latitude and longitude information where the user terminal is located.
Disaster Information Communication System.
The method of claim 2,
The user terminal
The apparatus may further include a location information processor configured to display the location information received from the GPS satellite on a map and provide the location information in a graphic form.
Disaster Information Communication System.
The method of claim 1,
The user terminal
Implemented in a black box mounted on a vehicle or aircraft
Disaster Information Communication System.
Obtaining image information of an area currently moving or stopping through a user terminal;
Analyzing whether the disaster occurs by analyzing the image information;
Receiving location information of the area from a GPS satellite when a disaster occurs;
Searching for a peripheral communication network;
Selecting and accessing a specific communication network from the searched communication networks; And
Transmitting disaster information including the image information and the location information through the connected communication network;
Disaster information communication method comprising a.
The method of claim 9,
Selecting and accessing the specific communication network
If there is an accessible WLAN network among the searched communication networks, accessing the WLAN network preferentially; if there is no accessible WLAN network, selecting and accessing a network having the highest signal strength among the WCDMA, WiBro, and LTE networks;
Disaster Information Communication Method.
The method of claim 10,
The transmitting of the disaster information
Transmitting the disaster information by applying a modulation scheme corresponding to the connected wireless communication network;
Disaster Information Communication Method.

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