An emergency broadcasting method and system for large-scale search and rescue in mountain forests

Abstract

The present invention provides an emergency broadcasting method and system for large-scale search and rescue in mountains and forests, which relates to the technical field related to emergency broadcasting, including: S1, obtaining a grid-divided mountain and forest map; S2, sending a corresponding first area search instruction to the mobile device carried by the rescue group through emergency broadcasting; S3, receiving obstacle information uploaded by the mobile device carried by the current rescue group, and obtaining the boundary line of the current obstacle area encountered by the current rescue group in the first layer of grid; S4, connecting the boundary line of the current obstacle area, the boundary line and the center point of the first layer of grid to form a closed searched area, and judging whether the searched area exceeds the preset area size of the first layer of grid. If so, go to step S5; if not, go to step S6; S5, sending a corresponding second area search instruction to the mobile device carried by the rescue group through emergency broadcasting; S6, sending a corresponding dispatch instruction to the mobile device carried by the rescue group through emergency broadcasting.

Description

Technical Field

[0001] The present invention relates to the technical field related to emergency broadcasting, and in particular to an emergency broadcasting method and system applied to large-scale search and rescue in mountain forests. Background Art

[0002] When a large-scale search and rescue operation is required in a mountain forest, emergency broadcasts are often used to guide rescuers. This guidance can quickly help rescuers conduct a large-scale, comprehensive search of the forest. However, due to the complex terrain and vegetation in the mountains and forests, if only a simple forest map is used to divide the area and guide rescuers to the corresponding search area, they may encounter insurmountable obstacles due to vegetation or terrain during the search. If these situations are not handled promptly, the search and rescue process will be delayed, delaying the rescue time. Summary of the Invention

[0003] The purpose of the present invention is to provide an emergency broadcasting method and system for large-scale search and rescue in mountain forests. Rescue personnel are configured in advance on a grid-divided forest map, so that rescue personnel can conduct a carpet search with the location where the rescue personnel are lost as the center point. On this basis, when rescue personnel encounter an obstacle area, they are dispatched according to the current search area and the location information of the rescue personnel.

[0004] In order to solve the above technical problems, the present invention adopts the following solutions:

[0005] An emergency broadcasting method for large-scale search and rescue in mountain forests, comprising:

[0006] S1. Obtain a forest map with the location where the person to be rescued is lost as the center point and divided into grids according to the number of people in multiple rescue teams, and mark the grids of different layers in sequence according to the center point;

[0007] S2. At time t1, a corresponding first area search instruction is sent to the mobile devices carried by the rescue teams through emergency broadcasting, so that multiple rescue teams start from the center point and are evenly distributed in the first grid layer. The rescue teams then conduct an area search along the boundary line of the first grid layer in a preset rotation direction within the first grid layer.

[0008] S3. Receive obstacle information uploaded by the mobile device carried by the current rescue team, identify the obstacle information, and obtain the boundary line of the current obstacle area encountered by the current rescue team in the first layer of grid;

[0009] S4, connecting the boundary line of the current obstacle area, the boundary line of the first layer grid, and the center point to form a closed searched area, and determining whether the searched area exceeds the preset area size of the first layer grid. If so, proceed to step S5; if not, proceed to step S6;

[0010] S5. At time t2, corresponding second area search instructions are sent to the mobile devices carried by the rescue teams via emergency broadcast, so that the multiple rescue teams respectively start from the first layer of grids and rotate in a preset direction to the second layer of grids. The rescue teams in the second layer of grids adjacent to the current obstacle area conduct area searches in the first layer of grids and the second layer of grids except for the searched area.

[0011] S6. At time t2, corresponding dispatch instructions are sent to the mobile devices carried by the rescue team through emergency broadcasting, so that the rescue teams start from the first-layer grids respectively and rotate to the adjacent first-layer grids according to the location information of the rescue teams. The rescue teams in the first-layer grids where the current obstacle area is located conduct regional searches for areas in the first-layer grids except for the searched areas.

[0012] A further preferred technical solution is: the grid division process is: taking the location where the person to be rescued is lost as the center point on the forest map, making vertical and horizontal lines perpendicular to each other based on the center point, and then setting the grid size according to the number of people in the rescue team, and dividing the grid from the vertical and horizontal lines according to the grid size, so that the rescue team can complete the area search along the boundary line of the grid in a preset rotation direction within a preset time.

[0013] A further preferred technical solution is: in S2, when the corresponding first area search instructions are sent to the mobile devices carried by the rescue groups through emergency broadcasting, the four rescue groups respectively receive the corresponding first area search instructions, so that the four rescue groups start from the center point and go to the first layer of grids, so that the first layer of grids corresponds one to one with the rescue groups.

[0014] A further preferred technical solution is: the preset rotation direction includes clockwise and counterclockwise directions. In the process of conducting an area search along the boundary line of the first layer of grids according to the preset rotation direction, at least one rescuer in the rescue team walks along the boundary line of the first layer of grids according to the rotation direction, and the remaining rescuers advance in parallel at a fixed distance to form an area search.

[0015] A further preferred technical solution is: in S3, the obstacle information refers to the location information uploaded by the rescuer walking along the boundary line of the first layer grid in the rotation direction through the mobile device, and the mobile device is equipped with an azimuth recording module and a location recording module. The process of obtaining the location information is:

[0016] When walking along the boundary line of the first grid, the azimuth recording module records the azimuth of the current rescuer's position. If the azimuth is offset, the first offset position and the azimuth of the first offset position are recorded; if the azimuth of the current offset position is offset again, the second offset position and the azimuth of the second offset position are recorded, and the first offset position and the second offset position are formed into position information.

[0017] A further preferred technical solution is: in S3, the obstacle information is identified to obtain a first offset position and a second offset position, and the first offset position and the second offset position are connected on the mountain forest map to obtain the boundary line of the current obstacle area encountered by the current rescue team in the first layer of the grid.

[0018] A further preferred technical solution is: in S5, when corresponding second area search instructions are sent to the mobile devices carried by the rescue groups through emergency broadcasting, the four rescue groups start from the first layer of grids respectively and rotate to the second layer of grids according to the preset direction, so that one rescue group is located in the second layer of grids adjacent to the current obstacle area, and performs area searches on the areas in the first layer of grids and the second layer of grids except the searched areas.

[0019] A further preferred technical solution is: in S6, when sending corresponding dispatch instructions to the mobile devices carried by the rescue groups through emergency broadcasting, the current position information of the four rescue groups is obtained in advance through the mobile devices, and the distance between the current position information and the first-layer grid where the current obstacle area is located is calculated respectively, so that the rescue groups start from the first-layer grid respectively, and the rescue group with the smallest distance value goes to the first-layer grid where the current obstacle area is located, and generates the current rotation direction, so that other rescue groups go to the corresponding first-layer grid in the current rotation direction.

[0020] An emergency broadcasting system for large-scale search and rescue in mountain forests, and an emergency broadcasting method for large-scale search and rescue in mountain forests, comprising:

[0021] Forest map grid division module: obtains a forest map with the location where the rescued personnel are lost as the center point and divides it into grids according to the number of personnel in multiple rescue teams, and marks the grids of different layers in sequence according to the center point;

[0022] First search module: Sends corresponding first area search instructions to the mobile devices carried by the rescue teams through emergency broadcast, so that multiple rescue teams start from the center point and are evenly distributed in the first grid layer. In the first grid layer, the area search is carried out along the boundary line of the first grid layer in a preset rotation direction;

[0023] Obstacle identification module: Receives obstacle information uploaded by the mobile device carried by the current rescue team, identifies the obstacle information, and obtains the boundary line of the current obstacle area encountered by the current rescue team in the first layer of grid;

[0024] Searched area judgment module: connects the boundary line of the current obstacle area, the boundary line and the center point of the first layer of grid to form a closed searched area, and determines whether the searched area exceeds the preset area size of the first layer of grid;

[0025] Expanded search module: The emergency broadcast sends corresponding second-area search instructions to the mobile devices carried by the rescue teams, so that multiple rescue teams start from the first-layer grid and rotate to the second-layer grid according to the preset direction. The rescue team in the second-layer grid adjacent to the current obstacle area conducts an area search in the first-layer grid and the second-layer grid except for the searched area;

[0026] Repeated search module: Send corresponding dispatch instructions to the mobile devices carried by the rescue team through emergency broadcast, so that the rescue team starts from the first-layer grid and rotates to the adjacent first-layer grid according to the location information of the rescue team. The rescue team in the first-layer grid where the current obstacle area is located conducts an area search in the first-layer grid except the searched area.

[0027] Beneficial effects of the present invention:

[0028] The present invention provides an emergency broadcast method and system for large-scale search and rescue in mountain forests. The method mainly uses emergency broadcasts and mobile devices carried by the rescue team to receive and send corresponding information in real time, which is convenient for guiding the rescue team to conduct search and rescue. During the search and rescue process, a carpet search is carried out with the location where the rescue personnel are lost as the center point. During the carpet search process, the forest map is grid-divided based on the number of personnel in the rescue team, so that the rescue team can meet the requirements of full coverage search of the grid within a preset time. It can ensure that the real-time situation of each rescue group is uploaded within the preset time, realize information feedback, and facilitate back-end personnel to monitor the rescue situation in real time. On this basis, a scheduling process is proposed for when rescue personnel encounter an obstacle area. First, different processing methods can be selected according to the size of the search area when the rescue personnel encounter the obstacle area. Different processing methods can be more suitable for the search process, meeting the speed and full coverage of the search process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a flow chart of the emergency broadcast method in Example 1 of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Unless otherwise specifically stated, the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0032] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0033] Additionally, descriptions of well-known structures, functions, and configurations may be omitted for clarity and conciseness. Those skilled in the art will recognize that various changes and modifications can be made to the examples described herein without departing from the spirit and scope of the present disclosure.

[0034] Technologies, methods, and apparatus known to ordinary technicians in the relevant field may not be discussed in detail, but where appropriate, such technologies, methods, and apparatus should be considered part of the authorization specification.

[0035] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments:

[0037] Example 1

[0038] An emergency broadcasting method for large-scale search and rescue in mountain forests, comprising:

[0039] S1. Obtain a forest map with the location where the person to be rescued is lost as the center point and divided into grids according to the number of people in multiple rescue teams, and mark the grids of different layers in sequence according to the center point;

[0040] S2. At time t1, a corresponding first area search instruction is sent to the mobile devices carried by the rescue teams through emergency broadcasting, so that multiple rescue teams start from the center point and are evenly distributed in the first grid layer. The rescue teams then conduct an area search along the boundary line of the first grid layer in a preset rotation direction within the first grid layer.

[0041] S3. Receive obstacle information uploaded by the mobile device carried by the current rescue team, identify the obstacle information, and obtain the boundary line of the current obstacle area encountered by the current rescue team in the first layer of grid;

[0042] S4, connecting the boundary line of the current obstacle area, the boundary line of the first layer grid, and the center point to form a closed searched area, and determining whether the searched area exceeds the preset area size of the first layer grid. If so, proceed to step S5; if not, proceed to step S6;

[0043] S5. At time t2, corresponding second area search instructions are sent to the mobile devices carried by the rescue teams via emergency broadcast, so that the multiple rescue teams respectively start from the first layer of grids and rotate in a preset direction to the second layer of grids. The rescue teams in the second layer of grids adjacent to the current obstacle area conduct area searches in the first layer of grids and the second layer of grids except for the searched area.

[0044] S6. At time t2, corresponding dispatch instructions are sent to the mobile devices carried by the rescue team through emergency broadcasting, so that the rescue teams start from the first-layer grids respectively and rotate to the adjacent first-layer grids according to the location information of the rescue teams. The rescue teams in the first-layer grids where the current obstacle area is located conduct regional searches for areas in the first-layer grids except for the searched areas.

[0045] A further preferred technical solution is: the grid division process is: taking the location where the person to be rescued is lost as the center point on the forest map, making vertical and horizontal lines perpendicular to each other based on the center point, and then setting the grid size according to the number of people in the rescue team, and dividing the grid from the vertical and horizontal lines according to the grid size, so that the rescue team can complete the area search along the boundary line of the grid in a preset rotation direction within a preset time.

[0046] A further preferred technical solution is: in S2, when the corresponding first area search instructions are sent to the mobile devices carried by the rescue groups through emergency broadcasting, the four rescue groups respectively receive the corresponding first area search instructions, so that the four rescue groups start from the center point and go to the first layer of grids, so that the first layer of grids corresponds one to one with the rescue groups.

[0047] A further preferred technical solution is: the preset rotation direction includes clockwise and counterclockwise directions. In the process of conducting an area search along the boundary line of the first layer of grids according to the preset rotation direction, at least one rescuer in the rescue team walks along the boundary line of the first layer of grids according to the rotation direction, and the remaining rescuers advance in parallel at a fixed distance to form an area search.

[0048] A further preferred technical solution is: in S3, the obstacle information refers to the location information uploaded by the rescuer walking along the boundary line of the first layer grid in the rotation direction through the mobile device, and the mobile device is equipped with an azimuth recording module and a location recording module. The process of obtaining the location information is:

[0049] When walking along the boundary line of the first grid, the azimuth recording module records the azimuth of the current rescuer's position. If the azimuth is offset, the first offset position and the azimuth of the first offset position are recorded; if the azimuth of the current offset position is offset again, the second offset position and the azimuth of the second offset position are recorded, and the first offset position and the second offset position are formed into position information.

[0050] A further preferred technical solution is: in S3, the obstacle information is identified to obtain a first offset position and a second offset position, and the first offset position and the second offset position are connected on the mountain forest map to obtain the boundary line of the current obstacle area encountered by the current rescue team in the first layer of the grid.

[0051] A further preferred technical solution is: in S5, when corresponding second area search instructions are sent to the mobile devices carried by the rescue groups through emergency broadcasting, the four rescue groups start from the first layer of grids respectively and rotate to the second layer of grids according to the preset direction, so that one rescue group is located in the second layer of grids adjacent to the current obstacle area, and performs area searches on the areas in the first layer of grids and the second layer of grids except the searched areas.

[0052] A further preferred technical solution is: in S6, when sending corresponding dispatch instructions to the mobile devices carried by the rescue groups through emergency broadcasting, the current position information of the four rescue groups is obtained in advance through the mobile devices, and the distance between the current position information and the first-layer grid where the current obstacle area is located is calculated respectively, so that the rescue groups start from the first-layer grid respectively, and the rescue group with the smallest distance value goes to the first-layer grid where the current obstacle area is located, and generates the current rotation direction, so that other rescue groups go to the corresponding first-layer grid in the current rotation direction.

[0053] Example 2

[0054] An emergency broadcasting system for large-scale search and rescue in mountain forests, and an emergency broadcasting method for large-scale search and rescue in mountain forests, comprising:

[0055] Forest map grid division module: obtains a forest map with the location where the rescued personnel are lost as the center point and divides it into grids according to the number of personnel in multiple rescue teams, and marks the grids of different layers in sequence according to the center point;

[0056] First search module: Sends corresponding first area search instructions to the mobile devices carried by the rescue teams through emergency broadcast, so that multiple rescue teams start from the center point and are evenly distributed in the first grid layer. In the first grid layer, the area search is carried out along the boundary line of the first grid layer in a preset rotation direction;

[0057] Obstacle identification module: Receives obstacle information uploaded by the mobile device carried by the current rescue team, identifies the obstacle information, and obtains the boundary line of the current obstacle area encountered by the current rescue team in the first layer of grid;

[0058] Searched area judgment module: connects the boundary line of the current obstacle area, the boundary line and the center point of the first layer of grid to form a closed searched area, and determines whether the searched area exceeds the preset area size of the first layer of grid;

[0059] Expanded search module: The emergency broadcast sends corresponding second-area search instructions to the mobile devices carried by the rescue teams, so that multiple rescue teams start from the first-layer grid and rotate to the second-layer grid according to the preset direction. The rescue team in the second-layer grid adjacent to the current obstacle area conducts an area search in the first-layer grid and the second-layer grid except for the searched area;

[0060] Repeated search module: Send corresponding dispatch instructions to the mobile devices carried by the rescue team through emergency broadcast, so that the rescue team starts from the first-layer grid and rotates to the adjacent first-layer grid according to the location information of the rescue team. The rescue team in the first-layer grid where the current obstacle area is located conducts an area search in the first-layer grid except the searched area.

[0061] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Based on the technical essence of the present invention and within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement of the above embodiment shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An emergency broadcasting method for large-scale search and rescue in mountain forests, characterized in that: include: S1. Obtain a forest map with the location where the person to be rescued is lost as the center point and divided into grids according to the number of people in multiple rescue teams, and mark the grids of different layers in sequence according to the center point; S2. At time t1, a corresponding first area search instruction is sent to the mobile devices carried by the rescue teams through emergency broadcasting, so that multiple rescue teams start from the center point and are evenly distributed in the first grid layer. The rescue teams then conduct an area search along the boundary line of the first grid layer in a preset rotation direction within the first grid layer. S3. Receive obstacle information uploaded by the mobile device carried by the current rescue team, identify the obstacle information, and obtain the boundary line of the current obstacle area encountered by the current rescue team in the first layer of grid; S4, connecting the boundary line of the current obstacle area, the boundary line of the first layer grid, and the center point to form a closed searched area, and determining whether the searched area exceeds the preset area size of the first layer grid. If so, proceed to step S5; if not, proceed to step S6; S5. At time t2, corresponding second area search instructions are sent to the mobile devices carried by the rescue teams via emergency broadcast, so that the multiple rescue teams respectively start from the first layer of grids and rotate in a preset direction to the second layer of grids. The rescue teams in the second layer of grids adjacent to the current obstacle area conduct area searches in the first layer of grids and the second layer of grids except for the searched area. S6. At time t2, corresponding dispatch instructions are sent to the mobile devices carried by the rescue team through emergency broadcasting, so that the rescue teams start from the first-layer grids respectively and rotate to the adjacent first-layer grids according to the location information of the rescue teams. The rescue teams in the first-layer grids where the current obstacle area is located conduct regional searches for areas in the first-layer grids except for the searched areas.

2. The emergency broadcasting method for large-scale search and rescue in mountain forests according to claim 1, characterized in that: The grid division process is as follows: taking the location where the rescue personnel are lost as the center point on the forest map, drawing mutually perpendicular vertical and horizontal lines based on the center point, then setting the grid size according to the number of personnel in the rescue team, and dividing the grid from the vertical and horizontal lines based on the grid size, so that the rescue team can complete the area search along the boundary line of the grid in a preset rotation direction within a preset time.

3. The emergency broadcasting method for large-scale search and rescue in mountain forests according to claim 1, characterized in that: In S2, when the corresponding first area search instructions are sent to the mobile devices carried by the rescue groups through emergency broadcasting, the four rescue groups receive the corresponding first area search instructions respectively, so that the four rescue groups start from the center point and go to the first layer grid respectively, so that the first layer grids correspond to the rescue groups one by one.

4. The emergency broadcasting method for large-scale search and rescue in mountain forests according to claim 1, characterized in that: The preset rotation direction includes clockwise and counterclockwise. During the process of performing an area search along the boundary line of the first layer of grids according to the preset rotation direction, at least one rescuer in the rescue team walks along the boundary line of the first layer of grids according to the rotation direction, and the remaining rescuers advance in parallel at a fixed distance to form an area search.

5. The emergency broadcasting method for large-scale search and rescue in mountain forests according to claim 4, characterized in that: In S3, the obstacle information refers to the location information uploaded by the rescuer walking along the boundary line of the first layer grid in the rotation direction through the mobile device. The mobile device is equipped with an azimuth recording module and a location recording module. The process of obtaining the location information is as follows: When walking along the boundary line of the first grid, the azimuth recording module records the azimuth of the current rescuer's position. If the azimuth is offset, the first offset position and the azimuth of the first offset position are recorded; if the azimuth of the current offset position is offset again, the second offset position and the azimuth of the second offset position are recorded, and the first offset position and the second offset position are formed into position information.

6. The emergency broadcasting method for large-scale search and rescue in mountain forests according to claim 5, characterized in that: In S3, the obstacle information is identified to obtain a first offset position and a second offset position, and the first offset position and the second offset position are connected on the mountain forest map to obtain a boundary line of the current obstacle area encountered by the current rescue team in the first layer of grid.

7. The emergency broadcasting method for large-scale search and rescue in mountain forests according to claim 3, characterized in that: In S5, when the corresponding second area search instructions are sent to the mobile devices carried by the rescue teams through emergency broadcasting, the four rescue teams start from the first layer of grids respectively and rotate to the second layer of grids according to the preset direction, so that one rescue team is located in the second layer of grids adjacent to the current obstacle area, and conducts area search on the areas in the first layer of grids except the searched areas and the second layer of grids.

8. The emergency broadcasting method for large-scale search and rescue in mountain forests according to claim 3 is characterized in that: In S6, when sending corresponding dispatch instructions to the mobile devices carried by the rescue groups through emergency broadcast, the current position information of the four rescue groups is obtained in advance through the mobile devices, and the distance between the current position information and the first-layer grid where the current obstacle area is located is calculated respectively, so that the rescue groups start from the first-layer grid respectively, and the rescue group with the smallest distance value goes to the first-layer grid where the current obstacle area is located, and generates the current rotation direction, so that other rescue groups go to the corresponding first-layer grid in the current rotation direction.

9. An emergency broadcast system used for large-scale search and rescue in mountain forests, characterized by: An emergency broadcasting method for large-scale search and rescue in mountain forests according to any one of claims 1 to 8 is applied, comprising: Forest map grid division module: obtains a forest map with the location where the rescued personnel are lost as the center point and divides it into grids according to the number of personnel in multiple rescue teams, and marks the grids of different layers in sequence according to the center point; First search module: Sends corresponding first area search instructions to the mobile devices carried by the rescue teams through emergency broadcast, so that multiple rescue teams start from the center point and are evenly distributed in the first grid layer. In the first grid layer, the area search is carried out along the boundary line of the first grid layer in a preset rotation direction; Obstacle identification module: Receives obstacle information uploaded by the mobile device carried by the current rescue team, identifies the obstacle information, and obtains the boundary line of the current obstacle area encountered by the current rescue team in the first layer of grid; Searched area judgment module: connects the boundary line of the current obstacle area, the boundary line and the center point of the first layer of grid to form a closed searched area, and determines whether the searched area exceeds the preset area size of the first layer of grid; Expanded search module: The emergency broadcast sends corresponding second-area search instructions to the mobile devices carried by the rescue teams, so that multiple rescue teams start from the first-layer grid and rotate to the second-layer grid according to the preset direction. The rescue team in the second-layer grid adjacent to the current obstacle area conducts an area search in the first-layer grid and the second-layer grid except for the searched area; Repeated search module: Send corresponding dispatch instructions to the mobile devices carried by the rescue team through emergency broadcast, so that the rescue team starts from the first-layer grid and rotates to the adjacent first-layer grid according to the location information of the rescue team. The rescue team in the first-layer grid where the current obstacle area is located conducts an area search in the first-layer grid except the searched area.

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