Geographic fence creating method and system suitable for preventing children from getting lost

Abstract

The invention belongs to the technical field of mobile communication, and particularly relates to a geo-fence creating method and system suitable for preventing children from being lost. The method comprises the following steps: determining a to-be-monitored area, and dividing the to-be-monitored area into a plurality of grid areas; a wireless network transmitting module is arranged in a grid area where the central position of the to-be-monitored area is located; position information and signal intensity information are collected based on wireless signal intensity through a mobile terminal carried by a child; in the to-be-monitored area, according to the collected signal intensity information, if the wireless signal intensity of a certain grid area is equal to a preset threshold value, determining the grid area as a geo-fence boundary point; connecting the geo-fencing boundary points into a closed loop to form an activity boundary of children; a monitoring mechanism is set, and when it is displayed that the child is about to pass through the activity boundary, an alarm is triggered automatically. According to the method, the accuracy and the real-time performance of monitoring are improved, and the problem of inaccurate positioning in an indoor or shielded environment is effectively solved.

Description

Technical Field

[0001] The present invention belongs to the field of mobile communication technology, and in particular relates to a method and system for creating a geographic fence suitable for preventing young children from getting lost. Background Art

[0002] With the rapid development of mobile communication technology, people's lifestyles have undergone tremendous changes. Especially in the field of child safety management, parents and guardians have a growing need to ensure the safety of young children. Traditional child monitoring methods, such as human monitoring and simple electronic device positioning, can no longer meet the needs of modern society and have many limitations, such as blind spots, inaccurate positioning, and lack of real-time warning mechanisms.

[0003] In this context, geo-fencing technology came into being. Geofencing is a service based on geographic location information that can create virtual boundaries in the real world. When a mobile device enters or leaves these virtual boundaries, it can trigger a specific application response, such as sending a warning message to the guardian. The application of this technology has greatly improved the efficiency of safety management of young children, but the existing geo-fencing technology still has room for improvement. For example, existing technologies often rely on GPS signals, but GPS signals are weak indoors or in blocked environments, and the positioning accuracy is low; in addition, the existing geo-fencing setting process is complicated and not flexible enough, and it is difficult to meet personalized and precise monitoring needs. Summary of the invention

[0004] 1. Technical issues to be resolved The present invention mainly aims at the above problems and proposes a method and system for creating a geographical fence suitable for preventing young children from getting lost. Its purpose is to solve the problems of blind spots in monitoring, inaccurate positioning and lack of real-time warning mechanism in the prior art.

[0005] (II) Technical solution To achieve the above objectives, the present invention provides a method for creating a geo-fence for preventing children from getting lost, the method comprising: Step 1: determine an area to be monitored, and divide the area to be monitored into multiple grid areas; Step 2: Setting a wireless network transmission module in the grid area where the center of the area to be monitored is located as a signal transmission point; Step 3: Using the mobile terminal carried by the child, based on the wireless signal strength, the location information and signal strength information corresponding to each grid area are collected; Step 4: In the area to be monitored, according to the collected signal strength information, if the wireless signal strength of a certain grid area is equal to a preset threshold, the grid area is determined as a geographic fence boundary point; Step 5: Connect the boundary points of the geo-fence into a closed loop to form the activity boundary of the young child; Step 6: Establish a monitoring mechanism to automatically trigger an alarm when the location information reported by the child's mobile terminal device shows that the child is about to cross the activity boundary.

[0006] Furthermore, in step 6, the monitoring mechanism updates the child's location information in real time through real-time communication with the child's mobile terminal; when the monitoring system detects that the child's mobile terminal location information shows that the child is about to cross the activity boundary, the monitoring system will select one or more alarm methods such as sound, vibration or light signal according to the settings of the child's mobile terminal to issue an alarm to remind the child and the guardian.

[0007] Furthermore, in step 3, the location information and signal strength information corresponding to each grid area are collected based on the wireless signal strength through the mobile terminal carried by the young child. This step includes: the young child's mobile terminal starts the wireless signal receiver to receive the signal transmitted by the wireless network transmission module; the mobile terminal measures and records the strength of the received wireless signal; in combination with the current location information of the mobile terminal, each measured wireless signal strength is matched with the grid area where it is located to form a set of paired data of location information and signal strength information; the mobile terminal sends the paired data to the monitoring system.

[0008] Further, in step 5, when the distribution of the geo-fence boundary points is irregular, all the geo-fence boundary points are connected in a clockwise or counterclockwise order to form a closed polygon.

[0009] Further, in step 5, when the distribution of the geo-fence boundary points is relatively uniform and there are no special terrain or obstacle restrictions, a circle is drawn by selecting the signal transmission point as the center and the distance from the farthest geo-fence boundary point to the signal transmission point as the radius.

[0010] Further, in step 5, when the distribution range of the geo-fence boundary point in one axial direction is greater than the distribution range in another axial direction, two axial directions are determined, and the distance from the farthest geo-fence boundary point to the signal transmission point is calculated as the two semi-axes of the ellipse to draw the ellipse.

[0011] To achieve the above object, the second aspect of the present invention provides a system for creating a geographical fence suitable for preventing young children from getting lost, the system comprising: Area division module: used to determine an area to be monitored and divide the area to be monitored into multiple grid areas; Wireless network transmission module: located in the grid area at the center of the area to be monitored, serving as a signal transmission point for transmitting wireless signals; Mobile terminal module: carried by the child, collects the location information and signal strength information corresponding to each grid area based on the wireless signal strength; the mobile terminal module includes a wireless signal receiver, which is used to receive the signal transmitted by the wireless network transmission module and measure and record the strength of the received wireless signal; Boundary determination module: used to determine, within the monitored area, based on the collected signal strength information, if the wireless signal strength of a grid area is equal to a preset threshold, the grid area is determined as a geographic fence boundary point; Boundary connection module: used to adopt different connection methods according to the distribution of geographic fence boundary points; Monitoring module: used to establish a monitoring mechanism, which automatically triggers an alarm when the location information reported by the child's mobile terminal device shows that the child is about to cross the activity boundary.

[0012] (III) Beneficial effects Compared with the prior art, the present invention provides a method and system for creating a geographic fence suitable for preventing young children from getting lost. First, by setting a wireless network transmission module at the center of the area to be monitored, and collecting the location information and signal strength information corresponding to each grid area based on the wireless signal strength through the mobile terminal carried by the young child, the present invention provides a more accurate positioning method. Secondly, according to the collected signal strength information, a certain grid area can be accurately determined as the boundary point of the geographic fence, thereby forming a closed loop as the activity boundary of the young child. Finally, by setting up a monitoring mechanism, when the location information reported by the mobile terminal device of the young child shows that the young child is about to cross the activity boundary, an alarm is automatically triggered. Compared with the traditional geographic fence technology that relies on GPS signals, this method based on the wireless network transmission module and the signal strength information collected by the mobile terminal significantly improves the accuracy and real-time performance of monitoring, effectively solves the problem of inaccurate positioning in indoor or shielded environments, and also makes the setting process of the geographic fence simpler and more flexible, which can better meet the personalized and precise monitoring needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a diagram of the interaction process between entities disclosed in this application.

[0014] Figure 2 A framework diagram of the main modules and their relationships of a geo-fence creation system disclosed in this application.

[0015] Figure 3 A selection logic decision diagram for different geo-fence shapes disclosed in this application. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] The main problem addressed by the present invention is the limitations of existing child monitoring methods and systems, such as monitoring blind spots, inaccurate positioning, and lack of real-time warning mechanisms. Among these methods, the geo-fence technology that relies on GPS signals in particular has large positioning errors in indoor or shielded environments, and the existing geo-fence setting process is complex and inflexible, making it difficult to meet personalized and precise monitoring needs. Therefore, the purpose of the present invention is to provide a more accurate, flexible, and easy-to-implement geo-fence creation method and system to improve the real-time and accuracy of child monitoring.

[0018] This embodiment provides a method for creating a geo-fence for preventing young children from getting lost, which is intended to improve the efficiency and accuracy of safety monitoring of young children, and is particularly suitable for indoor environments, such as indoor playgrounds. Figure 1-Figure 3 , the following are the detailed steps of the method of the present invention: Step 1: determine an area to be monitored, and divide the area to be monitored into multiple grid areas; First, determine an area that needs to be monitored, such as a kindergarten or indoor playground, etc. The monitoring area is divided into multiple grid areas, and the size of each grid area can be adjusted according to actual monitoring needs to ensure the precision and coverage of monitoring.

[0019] Step 2: Setting a wireless network transmission module in the grid area where the center of the area to be monitored is located as a signal transmission point; The wireless network transmitting module is responsible for sending wireless signals to the surrounding grid area so as to determine the location of the child by signal strength.

[0020] Step 3: Using the mobile terminal carried by the child, based on the wireless signal strength, the location information and signal strength information corresponding to each grid area are collected; In this embodiment, the mobile terminal carried by the young child is a wristband, and the location information and signal strength information will be used for subsequent geo-fence boundary determination.

[0021] Step 4: In the area to be monitored, according to the collected signal strength information, if the wireless signal strength of a certain grid area is equal to a preset threshold, the grid area is determined as a geographic fence boundary point; Step 5: Connect the boundary points of the geo-fence into a closed loop to form the activity boundary of the young child; Step 6: Establish a monitoring mechanism to automatically trigger an alarm when the location information reported by the child's mobile terminal device shows that the child is about to cross the activity boundary.

[0022] Through the above steps, the present invention can not only accurately monitor the activities of young children in the set area to prevent them from getting lost, but also immediately trigger an alarm when the young children try to leave the monitoring area, thereby quickly attracting the attention of the guardian and ensuring the safety of the young children. Compared with the traditional GPS-based geo-fencing technology, the present invention can better adapt to the mixed indoor and outdoor monitoring environment and provide more accurate and reliable safety protection measures.

[0023] In step 6, the monitoring mechanism updates the child's location information in real time through real-time communication with the mobile terminal carried by the child. This mechanism ensures that the monitoring system can continuously track the child's real-time location, thereby enhancing the system's ability to monitor the child's dynamics within and outside the activity boundary.

[0024] When the monitoring system detects that the child's mobile terminal location information shows that the child is about to cross the activity boundary, the system will automatically activate the alarm mechanism. The mechanism selects one or more alarm methods such as sound, vibration or light signal to alarm according to the settings of the child's mobile terminal. This diversified alarm method can more effectively attract the attention of children and guardians, and remind them that the child is in potential safety risks.

[0025] Audible alarm: can be set to a series of rapid tone changes, enough to attract the attention of people around and have an immediate warning effect on young children.

[0026] Vibration alarm: Generates strong vibrations on the mobile terminal carried by young children, which is particularly suitable for use in noisy environments to ensure that young children can sense the alarm.

[0027] Light signal alarm: Visual alarm is issued by flashing LED lights on mobile terminals, which is particularly suitable for environments with good visibility.

[0028] This multiple alarm mechanism not only increases the perceptibility of the alarm, but also provides flexibility for adapting to different environments and scenarios. Through real-time location updates and diversified alarm methods, this embodiment effectively improves the practicality and reliability of the child anti-lost geo-fence system, ensuring the safety of children within the set activity boundaries.

[0029] In step 3, the location information and signal strength information corresponding to each grid area are collected based on the wireless signal strength through the mobile terminal carried by the child. This step includes: the mobile terminal of the child activates the wireless signal receiver to receive the signal transmitted by the wireless network transmission module, wherein the function of the wireless signal receiver is to capture and receive the wireless signal emitted by the wireless network transmission module in the monitoring area. The wireless network transmission module is located in the center or other key locations of the monitoring area, and is intended to cover the entire monitoring area.

[0030] After receiving the wireless signal, the mobile terminal will measure and record the strength of these wireless signals. Signal strength is usually used to estimate the distance between the signal source and the receiver. In this scenario, the measured value of signal strength can help determine the approximate location of the child relative to the wireless network transmitter module.

[0031] The mobile terminal combines the measured wireless signal strength with its current location information. This means that for each signal strength measurement, the mobile terminal will record its location information, such as which grid area within the monitoring area it is in. In this way, the mobile terminal generates a set of paired data, each pair of data contains a specific location (grid area) and the wireless signal strength measured at that location.

[0032] Once the location and signal strength data are paired, the mobile terminal sends the data to the monitoring system, which can use it to determine whether the child is in a safe area or is approaching or has crossed the boundary of the geo-fence.

[0033] like Figure 3 ,In step 5, when the distribution of the geo-fence boundary points is irregular, all the geo-fence boundary points are connected in a clockwise or counterclockwise order to form a closed polygon.

[0034] like Figure 3 ,In step 5, when the distribution of geo-fence boundary points is relatively uniform and there are no special terrain or obstacle restrictions, a circle is drawn by selecting the signal transmission point as the center and the distance from the farthest geo-fence boundary point to the signal transmission point as the radius.

[0035] like Figure 3 ,In step 5, when the distribution range of the geo-fence boundary point in one axial direction is larger than the distribution range in another axial direction, two axial directions are determined, and the distance from the farthest geo-fence boundary point to the signal transmission point is calculated as the two semi-axes of the ellipse to draw the ellipse.

[0036] To achieve the above purpose, the second aspect of this embodiment provides a geographical fence creation system suitable for preventing children from getting lost, such as Figure 2 As shown, the system includes: The area division module 100 is used to determine an area to be monitored and divide the area to be monitored into a plurality of grid areas; Wireless network transmission module 200: located in the grid area at the center of the area to be monitored, serving as a signal transmission point for transmitting wireless signals; The mobile terminal module 300 is carried by the child and collects the location information and signal strength information corresponding to each grid area based on the wireless signal strength; the mobile terminal module includes a wireless signal receiver for receiving the signal transmitted by the wireless network transmitting module and measuring and recording the strength of the received wireless signal; Boundary determination module 400: used to determine, within the area to be monitored, based on the collected signal strength information, if the wireless signal strength of a certain grid area is equal to a preset threshold, the grid area as a geographic fence boundary point; Boundary connection module 500: used to adopt different connection modes according to the distribution of geographic fence boundary points; Monitoring module 600: used to establish a monitoring mechanism, which automatically triggers an alarm when the location information reported by the child's mobile terminal device shows that the child is about to cross the activity boundary.

[0037] The above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person skilled in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A method for creating a geographic fence suitable for preventing young children from getting lost, characterized in that: The steps include: Step 1: determine an area to be monitored, and divide the area to be monitored into multiple grid areas; Step 2: Setting a wireless network transmission module in the grid area where the center of the area to be monitored is located as a signal transmission point; Step 3: Using the mobile terminal carried by the child, based on the wireless signal strength, the location information and signal strength information corresponding to each grid area are collected; Step 4: In the area to be monitored, according to the collected signal strength information, if the wireless signal strength of a certain grid area is equal to a preset threshold, the grid area is determined as a geographic fence boundary point; Step 5: Connect the boundary points of the geo-fence into a closed loop to form the activity boundary of the young child; Step 6: Establish a monitoring mechanism to automatically trigger an alarm when the location information reported by the child's mobile terminal device shows that the child is about to cross the activity boundary.

2. A method for creating a geographic fence for preventing children from getting lost according to claim 1, characterized in that: In step 6, the monitoring mechanism updates the child's location information in real time through real-time communication with the child's mobile terminal; when the monitoring system detects that the child's mobile terminal location information shows that the child is about to cross the activity boundary, the monitoring system will select one or more alarm methods such as sound, vibration or light signal according to the settings of the child's mobile terminal to alert the child and the guardian.

3. A method for creating a geographic fence for preventing children from getting lost according to claim 1, characterized in that: In step 3, the location information and signal strength information corresponding to each grid area are collected based on the wireless signal strength through the mobile terminal carried by the young child. This step includes: the young child's mobile terminal starts the wireless signal receiver to receive the signal transmitted by the wireless network transmission module; the mobile terminal measures and records the strength of the received wireless signal; combined with the current location information of the mobile terminal, each measured wireless signal strength is matched with the grid area where it is located to form a set of paired data of location information and signal strength information; the mobile terminal sends the paired data to the monitoring system.

4. A method for creating a geographic fence for preventing children from getting lost according to claim 1, characterized in that: In step 5, when the distribution of the geo-fence boundary points is irregular, all the geo-fence boundary points are connected in a clockwise or counterclockwise order to form a closed polygon.

5. A method for creating a geographic fence for preventing a child from getting lost according to claim 1, characterized in that: In step 5, when the distribution of geo-fence boundary points is relatively uniform and there are no special terrain or obstacle restrictions, a circle is drawn by selecting the signal transmission point as the center and the distance from the farthest geo-fence boundary point to the signal transmission point as the radius.

6. A method for creating a geographic fence for preventing children from getting lost according to claim 1, characterized in that: In step 5, when the distribution range of the geo-fence boundary point in one axial direction is greater than the distribution range in another axial direction, two axial directions are determined, and the distance from the farthest geo-fence boundary point to the signal transmission point is calculated as the two semi-axes of the ellipse to draw the ellipse.

7. A geographical fence creation system suitable for preventing young children from getting lost, characterized in that: Includes the following modules: Area division module: used to determine an area to be monitored and divide the area to be monitored into multiple grid areas; Wireless network transmission module: located in the grid area at the center of the area to be monitored, serving as a signal transmission point for transmitting wireless signals; Mobile terminal module: carried by the child, collects the location information and signal strength information corresponding to each grid area based on the wireless signal strength; the mobile terminal module includes a wireless signal receiver, which is used to receive the signal transmitted by the wireless network transmission module and measure and record the strength of the received wireless signal; Boundary determination module: used to determine, within the monitored area, based on the collected signal strength information, if the wireless signal strength of a grid area is equal to a preset threshold, the grid area is determined as a geographic fence boundary point; Boundary connection module: used to adopt different connection methods according to the distribution of geographic fence boundary points; Monitoring module: used to establish a monitoring mechanism, which automatically triggers an alarm when the location information reported by the child's mobile terminal device shows that the child is about to cross the activity boundary.

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