KR101372327B1 - Safety management system of school zone and the service method - Google Patents

Abstract

A school zone safety management system according to the present invention includes: a user terminal which transmits GPS location data sensed by a GPS sensor through short-range wireless communication; a fixed sensor node which is installed in every certain area, receives the GPS location data from the user terminal, acquires image data of each area, and has a network to transmit the GPS location data and the acquired image data; and a central server which receives the GPS location data and the acquired image data transmitted from the fixed sensor node, extracts object image coordinates from the image data, and converts the image coordinates into three-dimensional coordinates by mapping the image coordinates into the GPS coordinates of the GPS location data. According to the present invention, by applying a situational-recognition base using an image sensor and a wireless sensor network, it is possible to monitor images in a school zone, track the location of an object, take fast actions accordingly, and thus help prevent crimes. [Reference numerals] (100) Central server; (110) Coordinate conversion unit; (114) Communication unit; (120) Analysis processing unit; (130) Database unit; (200) Fixed sensor node; (210,CC,FF,II) Image sensor unit; (220,DD,GG,JJ) Video server; (230,EE,HH,KK) Network communication unit; (300) User terminal; (310) GPS sensor; (AA) Wireless network TCP/IP; (BB) Wireless network TCP/IP

Description

School zone safety management system and its providing method {Safety management system of school zone and the service method}

"The present invention is the result of research conducted by 2009 Small and Medium Business Administration research support project establishment (No. 00037215)"

The present invention relates to a school zone safety management system and a method of providing the same, by applying a situational awareness base using an image sensor and a wireless sensor network to monitor the image in the school zone and to quickly take action by tracking the location and tracking of the object. The present invention relates to a school zone safety management system and a method of providing the same.

In general, a child protection area means a special protection area around children, including kindergarten as well as elementary school. Mainly designate roads within a 300m radius around the main entrances of elementary schools, etc., and install various safety facilities, and the vehicles passing through them must operate at 30 km / h or less, and illegal parking is prohibited. It is a special protected area, aka school zone.

Various wireless network surveillance systems have been applied for the crime prevention and safety of children in the child protection area.

The wireless sensor network means that very small sized independent sensor nodes are placed in specific physical spaces such as buildings, roads, and human bodies wherever necessary except for the existing Ad-Hoc network, and connected to the network in real time to manage information. do. The main features of wireless sensor nodes generally have limited computing and power resources due to their miniaturization and weight. These sensors use technologies such as low power, low cost, low specification hardware, tiny operating systems, and short range wireless protocols, and form a proprietary wireless Ad-Hoc network. Wireless sensor network is effective in constructing Ad-Hoc network based on wireless sensor network because it forms free network by collaborating with neighboring nodes without specific access point.

However, the safety management of children's protection zones is based on the GPS-based location recognition of personal services not connected to the CCTV installed by installing railings on the sidewalks, speed bumps, speed cameras, and multiple CCTVs. It costs a lot. The bigger problem is that the early criminals are not found when kidnapping, and when the event is prolonged, most cases lead to the death of children.

The technical problem to be solved by the present invention is to apply the situational awareness base using the image sensor and wireless sensor network to monitor the image in the school zone to locate and track the object to quickly take action to prevent crime school zone safety It is to provide a management system and a method of providing the same.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

School zone safety management system according to the present invention for solving the technical problem, the user terminal for transmitting the GPS position information sensed by the GPS sensor in the near field communication; A fixed sensor node installed in each zone and configured to receive GPS location information of the user terminal, and to acquire image information of each zone and to transmit the GPS location information and the acquired image information; And a central server receiving the GPS position information and the acquired image information transmitted from the fixed sensor node, extracting object image coordinates of the image information, mapping the coordinates to GPS coordinates of the GPS position information, and converting the coordinates into three-dimensional coordinates. Its features are to include.

In particular, the fixed sensor node may include an image sensor for sensing the image information; A video server receiving the sensed image information; And a network communication unit which receives the GPS location information from the user terminal and transmits the GPS location information and the image information to a central server.

In particular, the image sensor is characterized in that a close-up camera is used.

Here, in particular, the central server may include a coordinate conversion unit for matching the transmitted image information and GPS location information coordinates; An analysis processor extracting an object in the image coordinates matched by the coordinate converter to analyze contextual information; And a database unit for storing, managing, and managing the situation information and the unique ID of the user terminal.

In addition, the method for providing a school zone safety management system according to the present invention comprises the steps of obtaining image information from an image sensor of a fixed sensor node network installed for each predetermined area, and obtaining the GPS position information of the user and transmitting it to the central server; Extracting object image coordinates of the image information transmitted from the central server, mapping the object image coordinates to the GPS coordinates of the GPS position information, and matching the three-dimensional coordinates with each other; Extracting and tracking the position of the object within the GPS coordinates of the mapped image information; Transmitting situation analysis information of the extracted personal information and image information of the object; And it is characterized in that it comprises the step of monitoring the situation analysis information in real time.

In particular, the extraction of the object image coordinates may include: setting a background removal and an object area in the image of the image information transmitted to the central server; Extracting an object in the set object area and classifying the object into a predetermined criterion; The feature is that the image coordinate is calculated by extracting the object from the classified object.

Here, in particular, in the step of matching with the three-dimensional coordinates, it is characterized in that the four points are determined from the image coordinates and the GPS coordinates that are referenced to the four points are input and matched.

In particular, the three-dimensional coordinate matching is characterized in that it is calculated by converting the GPS coordinates for all the pixels in the image using the two-dimensional region interpolation method.

In particular, the feature of storing the image information to extract and track the location of the object in the database of the central server.

In particular, the feature is that the unique ID information and user information of the user GPS terminal are stored in the database of the central server.

Here, in particular, in the step of monitoring the situation analysis information, there is a characteristic in that an external warning notification and emergency situation report of the corresponding fixed sensor node network is performed when a dangerous situation occurs.

According to the present invention, it is possible to prevent crime by applying the situational awareness base using the image sensor and the wireless sensor network to monitor the image in the school zone to locate and track the object and take quick action.

Figure 1a is a schematic diagram of a school zone safety management system according to the present invention.
Figure 1b schematically shows the configuration of the school zone safety management system according to the present invention.
2 is a flowchart illustrating a method for providing a school zone safety management system according to the present invention.
3 is a flowchart illustrating a process of calculating image coordinates of image information according to the present invention.
4 is a view showing an example of the image coordinate and GPS coordinate mapping setting screen according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings.

In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it may be referred to as 'indirectly connected' not only with 'directly connected' . Also, to include an element does not exclude other elements unless specifically stated otherwise, but may also include other elements.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1A is a schematic diagram of a school zone safety management system according to the present invention, and FIG. 1B is a diagram schematically illustrating a configuration of a school zone safety management system according to the present invention. As shown in Figure 1b, the school zone safety management system according to the present invention, the user terminal 300 for transmitting the GPS position information sensed by the GPS sensor in the short-range wireless communication; A fixed sensor node (200) installed in a predetermined zone and configured to receive GPS location information of the user terminal, obtain image information of each zone, and transmit the GPS location information and the acquired image information; And receiving the GPS position information and the acquired image information transmitted from the fixed sensor node 200, extracting object image coordinates of the image information, mapping the GPS image information to the GPS coordinates of the GPS position information, and converting the coordinates into three-dimensional coordinates. The central server 100 is configured to include.

The user terminal 300 has a GPS sensor 310 built-in, so that children can acquire location information. In this case, a ZigBee of a short range wireless communication module may be embedded in the user terminal to transmit GPS location information with the fixed sensor node.

Here, GPS location-based sensors owned by children have a unique ID, and children's node ID (user terminal unique ID) includes IDs such as school code, year of enrollment, and child's number. Make it easy to identify. Each user terminal transmits data to a fixed sensor node through a Zigbee signal together with an ID value and location information through a GPS sensor.

The fixed sensor node (Backbone) 200 receives the image sensor 210 for sensing the image information, a video server 220 for transmitting the sensed image information, and receives GPS location information from the user terminal. It includes a network communication unit 230 for transmitting the GPS position information and the image information to the central server.

The image sensor 210 is composed of a general camera and a close-up camera, and acquires an image, and the acquired image is transmitted to the video server 220.

More specifically, the image sensor 210 is a fixed image sensor and has a vertical zoom function and a zoom function, and the image sensing information using the IP (private IP / certified IP available, fixed IP use) assigned to each sensor Prepare to transmit the video information through the server.

The network communication unit 230 transmits the image information transmitted to the video server 220 and the GPS location information transmitted from the user terminal to the central server. Here, the network communication unit may be configured with a Zigbee module capable of short-range wireless communication with the user terminal 300.

At this time, the state of the children such as school through the network equipment (VPN equipment, switch, hub, etc.) to communicate the data and image sensing information of the fixed sensor node for transmitting the received user terminal ID and GPS location information with the central server It communicates with the central center which can monitor the data and TCP / IP protocol.

The central server 100 analyzes the context information by extracting an object in the coordinates of the coordinates 110 and the coordinates of the coordinates conversion unit 110 matching the coordinates of the transmitted image information and GPS location information. The processor 120 includes a database unit 130 for storing and managing the situation information and the unique ID of the user terminal as a database, and a communication unit (not shown) for transmitting and receiving data with the fixed sensor node.

The coordinate converting unit 110 may calculate GPS coordinates of all pixels in the image by applying two-dimensional interpolation using the input GPS coordinates. At this time, the mapping of the coordinates is to determine the identity and the tracking of the image object through the coordinates mapped to determine the identity of the image object.

More specifically, the image is analyzed based on image information and GPS coordinates transmitted to the central server 100. The background image is set during the initial system execution. The size of the image is the same as or proportional to the original image input from the camera. In order to extract the object based on the background image, the region is set and it is set to reduce unnecessary processing time of the system and to efficiently use the resources of the system. This sets five areas as points, each of which must be selected in one direction, clockwise and counterclockwise. Objects are extracted from the set area and the extracted objects are classified and tracked into individual objects such as adults, children, and cars based on their size and shape. The tracking object extracts the location of the currently extracted object by matching the collected GPS coordinates with the image coordinates. Coordinate matching sets four points in the image and inputs the GPS coordinates that are referenced to the four points. Based on the four input points and the GPS coordinates, the GPS position of the extracted image object is extracted by matching the input coordinates (location of the user terminal) with the child coordinates of the image from the GPS terminal. Matching of image coordinates and GPS coordinates is a technology that maps two-dimensional coordinates to three-dimensional coordinates. The extracted objects are matched with GPS coordinates to provide improved information on the location and image of the extracted object in case of emergency. To improve child safety.

The analysis processing unit 120 performs location tracking and specific situation analysis of the object through the backup data of the transmitted information and various server-related programs.

The database unit 130 stores and updates the image sensing information, the received location information, and the analysis requirements necessary for the situation analysis. The administrator can search by time zone in the list and support to print out the shot image.

2 is a flowchart illustrating a method of providing a school zone safety management system according to the present invention, and FIG. 3 is a flowchart illustrating a process of calculating image coordinates of image information according to the present invention.

As shown in FIG. 2, in the method for providing a school zone safety management system according to the present invention, first, image information is obtained from an image sensor of a fixed sensor node 200 network installed at each predetermined zone, and the user's GPS location information is obtained. Acquiring and transmitting to the central server is performed (S201). Here, the network communication unit of the fixed sensor node 200 transmits the image information transmitted to the video server and the GPS location information transmitted from the user terminal to the central server.

The object image coordinates of the image information transmitted from the central server 100 are extracted, mapped to the GPS coordinates of the GPS location information, and matched to three-dimensional coordinates (S202).

More specifically, the matching of the three-dimensional coordinates is to determine the four points in the image coordinates and input by matching the GPS coordinates as a reference to the four points to match the GPS coordinates for all the pixels in the image using a two-dimensional region interpolation method It is calculated by converting to.

4 is a diagram illustrating an example of an image coordinate and GPS coordinate mapping setting screen according to the present invention. As shown in FIG. 4, the value is determined in a linear manner by a sum of values obtained by multiplying the weights of the four nearest pixels by using the two-dimensional interpolation. That is, one pixel value is determined by calculating the weight of each of the four points with the weight inversely proportional to the distance between the four newly created pixels and the adjacent point heights.

Subsequently, a step of extracting and tracking the position of the object in the GPS coordinates of the mapped image information is performed (S203). Here, the tracking object extracts the location of the currently extracted object by matching collected GPS coordinates and image coordinates.

Next, the step of transmitting the image information of the extracted object and the situation analysis information of the image information (S204). Here, in case of emergencies of the extracted object, the location and the identity of the object are identified. It has a unique ID of a unique GPS sensor. Include the same IDs so that children's information can be easily identified through node IDs. That is, each user terminal is analyzed through the ID value and the location information through the GPS sensor.

Then, the step of monitoring the situation analysis information in real time is performed (S205). Here, in the monitoring of the situation analysis information, when a dangerous situation occurs, an external warning notification and an emergency situation report of the corresponding fixed sensor node network are performed.

Meanwhile, a process of extracting the object image coordinates will be described.

First, a background removal and an object area are set in an image of the image information transmitted to the central server (S301). Here, the region is set to extract the object based on the background image from the image information, and is set to reduce unnecessary processing time of the system and to efficiently use the resources of the system. This sets five areas as points, each of which must be selected in one direction, clockwise and counterclockwise.

In operation S302, an object in the set object area is extracted to classify the object into a predetermined criterion. That is, the object is extracted from the set area, and the extracted object is classified into individual objects such as adults, children, and cars based on the size and shape.

Subsequently, a step of calculating image coordinates by extracting the corresponding object from the classified object is performed (S303). That is, the tracking object extracts the location of the currently extracted object through matching the collected GPS coordinates with the image coordinates.

Therefore, as described above, the image information and the GPS coordinates are mapped using the module which extracts the object from the position information and the image sensor through the GPS sensor and converts the two-dimensional coordinates into the three-dimensional coordinates. Mapping the location of the child and the location of the child, ie the location of the child, through the GPS sensor, enables administrators to take prompt actions such as quick location determination and criminal search during real-time monitoring, and automatically tracks the object in the absence of the administrator. To take action in a sequence of steps.

While the present invention has been particularly shown and described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of course, this is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the equivalents as well as the claims that follow.

Description of the Related Art
100 --- Central Server 110 --- Coordinate Converter
120 --- Analysis Processing Unit 130 --- Database Section
200 --- Fixed sensor node 210 --- Video sensor
220 --- Video Server 230 --- Network Communication
300 --- User terminal

Claims (11)

A user terminal for transmitting the GPS position information sensed by the GPS sensor to short-range wireless communication;
A fixed sensor node installed in each zone and configured to receive GPS location information of the user terminal, and to acquire image information of each zone and to transmit the GPS location information and the acquired image information; And
A central server receiving the GPS position information and the acquired image information transmitted from the fixed sensor node, extracting object image coordinates of the image information, mapping the coordinates to GPS coordinates of the GPS position information, and converting the coordinates into three-dimensional coordinates; Including,
The central server is converted to the three-dimensional coordinates school zone safety management system, characterized in that to determine the four points in the object image coordinates by inputting the GPS coordinates as a reference to the four points.
The method of claim 1,
The fixed sensor node is
An image sensor for sensing the image information;
A video server receiving the sensed image information; And
And a network communication unit for receiving the GPS location information from the user terminal and transmitting the GPS location information and the image information to a central server.
3. The method of claim 2,
The image sensor is a school zone safety management system, characterized in that a close-up camera is used.
The method of claim 1,
The central server
A coordinate conversion unit for matching the transmitted image information and GPS location information coordinates;
An analysis processor extracting an object in the image coordinates matched by the coordinate converter to analyze contextual information; And
And a database unit configured to store and manage the situation information and the unique ID of the user terminal as a database.
Obtaining image information from an image sensor of a fixed sensor node network installed at each predetermined area, obtaining GPS position information of a user, and transmitting the image information to a central server;
Extracting object image coordinates of the image information transmitted from the central server, mapping the object image coordinates to the GPS coordinates of the GPS position information, and matching the three-dimensional coordinates with each other;
Extracting and tracking the position of the object within the GPS coordinates of the mapped image information;
Transmitting situation analysis information of the extracted personal information and image information of the object; And
Including the step of monitoring the situation analysis information in real time,
Converting the three-dimensional coordinates of the school zone safety management system providing method characterized in that to determine the four points in the object image coordinates and input the GPS coordinates as a reference to the four points.
6. The method of claim 5,
Extraction of the object image coordinates,
Setting a background removal and an object area in the image of the image information transmitted to the central server;
Extracting an object in the set object area and classifying the object into a predetermined criterion;
The method for providing a school zone safety management system, characterized in that for calculating the image coordinates by extracting the object from the classified object.


delete 6. The method of claim 5,
The three-dimensional coordinate matching is calculated by converting the GPS coordinates for all the pixels in the image using a two-dimensional region interpolation method.
6. The method of claim 5,
And providing image information for extracting and tracking the location of an object in a database of the central server.
6. The method of claim 5,
The method of providing a school zone safety management system, characterized in that the unique ID information and user information of the user GPS terminal is stored in the database of the central server.
6. The method of claim 5,
A method of providing a school zone safety management system, characterized in that for monitoring the situation analysis information, when a dangerous situation occurs, an external warning notification and an emergency situation report of a corresponding fixed sensor node network are performed.

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