Indoor emergency path navigation method

A path navigation and path technology, applied in the computer field, can solve the problems of long decision-making time and unsuitability for real-time emergency escape, and achieve the effects of evacuating the affected people, reducing computational complexity, and timely navigation

Inactive Publication Date: 2013-09-04
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Abstract
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an indoor emergency route navigation method, which solves the defec

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] like figure 1 as shown,

[0029] An indoor emergency path navigation method, comprising the following steps:

[0030] (1) Deploy detection nodes in corridors of indoor scenes, and deploy guidance nodes at intersections and exits; figure 2 shown;

[0031] (2) Obtain the node and path information of the indoor scene through the detection node and the guide node;

[0032] (3) Obtain the starting point and dangerous point location information of indoor personnel through the detection node;

[0033] (4) Establish a path network diagram based on the node and path information of the indoor sc...

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Abstract

The invention discloses an indoor emergency path navigation method. The indoor emergency path navigation method comprises the steps of: deploying detecting nodes in an indoor scene corridor, deploying guide nodes at an intersection and an exit part; acquiring indoor scene nodes and path information through the detecting nodes and the guide nodes; acquiring position information of a starting point of a person and a dangerous point through the detecting nodes; building a path network diagram and storing by adopting a adjacency list data structure; determining a transferring target point of the person; limiting a search area within a rectangular area which takes the connecting line of the starting point and the target point as a diagonal to calculate the shortest path; expanding the search area to the minimum ellipse which comprises the rectangular area and takes the starting point and the target point as the two focal points and calculating the shortest path in the minimum ellipse; and according to the results of calculation, obtaining the shortest path. The indoor emergency path navigation method can be used for meeting the needs of emergency evacuation and navigation in emergency in public indoor spaces with large scales, complex spatial distribution and various types of people, such as hospitals, and is capable of reducing the time-space complexity, and improving the efficiency.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to an indoor emergency route navigation method. Background technique [0002] At present, due to the large number of sudden disaster accidents and the great harm, when a disaster accident occurs, due to the dynamic development of the disaster situation and the panic mental state of the refugees during the catastrophe period, the crowd will have a lot of blindness in choosing the escape route. sex. [0003] The primary task of accident rescue is to guide the people at the place where the accident occurred to quickly evacuate to a safe area. Therefore, it is necessary to choose an optimal escape route, that is, the shortest escape route, in the shortest time. [0004] It is a relatively common method to find the best escape route through search algorithm and Dijkstra (shortest path), but this method has the following defects: First, for complex scenes with more than 1000 nodes (int...

Claims

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Application Information

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IPC IPC(8): G01C21/34
Inventor 汪晓楠张肖
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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